Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) ST-Ericsson SA 2012 |
| 3 | * |
| 4 | * Charger driver for AB8500 |
| 5 | * |
| 6 | * License Terms: GNU General Public License v2 |
| 7 | * Author: |
| 8 | * Johan Palsson <johan.palsson@stericsson.com> |
| 9 | * Karl Komierowski <karl.komierowski@stericsson.com> |
| 10 | * Arun R Murthy <arun.murthy@stericsson.com> |
| 11 | */ |
| 12 | |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/device.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/delay.h> |
Lee Jones | 8891716 | 2013-02-13 11:39:19 +0000 | [diff] [blame] | 18 | #include <linux/notifier.h> |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 19 | #include <linux/slab.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/power_supply.h> |
| 22 | #include <linux/completion.h> |
| 23 | #include <linux/regulator/consumer.h> |
| 24 | #include <linux/err.h> |
| 25 | #include <linux/workqueue.h> |
| 26 | #include <linux/kobject.h> |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 27 | #include <linux/of.h> |
| 28 | #include <linux/mfd/core.h> |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 29 | #include <linux/mfd/abx500/ab8500.h> |
| 30 | #include <linux/mfd/abx500.h> |
| 31 | #include <linux/mfd/abx500/ab8500-bm.h> |
| 32 | #include <linux/mfd/abx500/ab8500-gpadc.h> |
| 33 | #include <linux/mfd/abx500/ux500_chargalg.h> |
| 34 | #include <linux/usb/otg.h> |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 35 | #include <linux/mutex.h> |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 36 | |
| 37 | /* Charger constants */ |
| 38 | #define NO_PW_CONN 0 |
| 39 | #define AC_PW_CONN 1 |
| 40 | #define USB_PW_CONN 2 |
| 41 | |
| 42 | #define MAIN_WDOG_ENA 0x01 |
| 43 | #define MAIN_WDOG_KICK 0x02 |
| 44 | #define MAIN_WDOG_DIS 0x00 |
| 45 | #define CHARG_WD_KICK 0x01 |
| 46 | #define MAIN_CH_ENA 0x01 |
| 47 | #define MAIN_CH_NO_OVERSHOOT_ENA_N 0x02 |
| 48 | #define USB_CH_ENA 0x01 |
| 49 | #define USB_CHG_NO_OVERSHOOT_ENA_N 0x02 |
| 50 | #define MAIN_CH_DET 0x01 |
| 51 | #define MAIN_CH_CV_ON 0x04 |
| 52 | #define USB_CH_CV_ON 0x08 |
| 53 | #define VBUS_DET_DBNC100 0x02 |
| 54 | #define VBUS_DET_DBNC1 0x01 |
| 55 | #define OTP_ENABLE_WD 0x01 |
Lee Jones | 4dcdf57 | 2013-02-14 09:24:10 +0000 | [diff] [blame] | 56 | #define DROP_COUNT_RESET 0x01 |
Marcus Cooper | b3ea5f4 | 2012-08-29 17:56:19 +0200 | [diff] [blame^] | 57 | #define USB_CH_DET 0x01 |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 58 | |
| 59 | #define MAIN_CH_INPUT_CURR_SHIFT 4 |
| 60 | #define VBUS_IN_CURR_LIM_SHIFT 4 |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 61 | #define AB8540_VBUS_IN_CURR_LIM_SHIFT 2 |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 62 | #define AUTO_VBUS_IN_CURR_LIM_SHIFT 4 |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 63 | #define AB8540_AUTO_VBUS_IN_CURR_MASK 0x3F |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 64 | #define VBUS_IN_CURR_LIM_RETRY_SET_TIME 30 /* seconds */ |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 65 | |
| 66 | #define LED_INDICATOR_PWM_ENA 0x01 |
| 67 | #define LED_INDICATOR_PWM_DIS 0x00 |
| 68 | #define LED_IND_CUR_5MA 0x04 |
| 69 | #define LED_INDICATOR_PWM_DUTY_252_256 0xBF |
| 70 | |
| 71 | /* HW failure constants */ |
| 72 | #define MAIN_CH_TH_PROT 0x02 |
| 73 | #define VBUS_CH_NOK 0x08 |
| 74 | #define USB_CH_TH_PROT 0x02 |
| 75 | #define VBUS_OVV_TH 0x01 |
| 76 | #define MAIN_CH_NOK 0x01 |
| 77 | #define VBUS_DET 0x80 |
| 78 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 79 | #define MAIN_CH_STATUS2_MAINCHGDROP 0x80 |
| 80 | #define MAIN_CH_STATUS2_MAINCHARGERDETDBNC 0x40 |
| 81 | #define USB_CH_VBUSDROP 0x40 |
| 82 | #define USB_CH_VBUSDETDBNC 0x01 |
| 83 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 84 | /* UsbLineStatus register bit masks */ |
| 85 | #define AB8500_USB_LINK_STATUS 0x78 |
Hakan Berg | d433766 | 2012-07-26 11:10:35 +0200 | [diff] [blame] | 86 | #define AB8505_USB_LINK_STATUS 0xF8 |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 87 | #define AB8500_STD_HOST_SUSP 0x18 |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 88 | #define USB_LINK_STATUS_SHIFT 3 |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 89 | |
| 90 | /* Watchdog timeout constant */ |
| 91 | #define WD_TIMER 0x30 /* 4min */ |
| 92 | #define WD_KICK_INTERVAL (60 * HZ) |
| 93 | |
| 94 | /* Lowest charger voltage is 3.39V -> 0x4E */ |
| 95 | #define LOW_VOLT_REG 0x4E |
| 96 | |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 97 | /* Step up/down delay in us */ |
| 98 | #define STEP_UDELAY 1000 |
| 99 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 100 | #define CHARGER_STATUS_POLL 10 /* in ms */ |
| 101 | |
Loic Pallardy | e07a564 | 2012-05-10 15:33:56 +0200 | [diff] [blame] | 102 | #define CHG_WD_INTERVAL (60 * HZ) |
| 103 | |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 104 | #define AB8500_SW_CONTROL_FALLBACK 0x03 |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 105 | /* Wait for enumeration before charing in us */ |
| 106 | #define WAIT_ACA_RID_ENUMERATION (5 * 1000) |
Lee Jones | 8891716 | 2013-02-13 11:39:19 +0000 | [diff] [blame] | 107 | /*External charger control*/ |
| 108 | #define AB8500_SYS_CHARGER_CONTROL_REG 0x52 |
| 109 | #define EXTERNAL_CHARGER_DISABLE_REG_VAL 0x03 |
| 110 | #define EXTERNAL_CHARGER_ENABLE_REG_VAL 0x07 |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 111 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 112 | /* UsbLineStatus register - usb types */ |
| 113 | enum ab8500_charger_link_status { |
| 114 | USB_STAT_NOT_CONFIGURED, |
| 115 | USB_STAT_STD_HOST_NC, |
| 116 | USB_STAT_STD_HOST_C_NS, |
| 117 | USB_STAT_STD_HOST_C_S, |
| 118 | USB_STAT_HOST_CHG_NM, |
| 119 | USB_STAT_HOST_CHG_HS, |
| 120 | USB_STAT_HOST_CHG_HS_CHIRP, |
| 121 | USB_STAT_DEDICATED_CHG, |
| 122 | USB_STAT_ACA_RID_A, |
| 123 | USB_STAT_ACA_RID_B, |
| 124 | USB_STAT_ACA_RID_C_NM, |
| 125 | USB_STAT_ACA_RID_C_HS, |
| 126 | USB_STAT_ACA_RID_C_HS_CHIRP, |
| 127 | USB_STAT_HM_IDGND, |
| 128 | USB_STAT_RESERVED, |
| 129 | USB_STAT_NOT_VALID_LINK, |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 130 | USB_STAT_PHY_EN, |
| 131 | USB_STAT_SUP_NO_IDGND_VBUS, |
| 132 | USB_STAT_SUP_IDGND_VBUS, |
| 133 | USB_STAT_CHARGER_LINE_1, |
| 134 | USB_STAT_CARKIT_1, |
| 135 | USB_STAT_CARKIT_2, |
| 136 | USB_STAT_ACA_DOCK_CHARGER, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 137 | }; |
| 138 | |
| 139 | enum ab8500_usb_state { |
| 140 | AB8500_BM_USB_STATE_RESET_HS, /* HighSpeed Reset */ |
| 141 | AB8500_BM_USB_STATE_RESET_FS, /* FullSpeed/LowSpeed Reset */ |
| 142 | AB8500_BM_USB_STATE_CONFIGURED, |
| 143 | AB8500_BM_USB_STATE_SUSPEND, |
| 144 | AB8500_BM_USB_STATE_RESUME, |
| 145 | AB8500_BM_USB_STATE_MAX, |
| 146 | }; |
| 147 | |
| 148 | /* VBUS input current limits supported in AB8500 in mA */ |
| 149 | #define USB_CH_IP_CUR_LVL_0P05 50 |
| 150 | #define USB_CH_IP_CUR_LVL_0P09 98 |
| 151 | #define USB_CH_IP_CUR_LVL_0P19 193 |
| 152 | #define USB_CH_IP_CUR_LVL_0P29 290 |
| 153 | #define USB_CH_IP_CUR_LVL_0P38 380 |
| 154 | #define USB_CH_IP_CUR_LVL_0P45 450 |
| 155 | #define USB_CH_IP_CUR_LVL_0P5 500 |
| 156 | #define USB_CH_IP_CUR_LVL_0P6 600 |
| 157 | #define USB_CH_IP_CUR_LVL_0P7 700 |
| 158 | #define USB_CH_IP_CUR_LVL_0P8 800 |
| 159 | #define USB_CH_IP_CUR_LVL_0P9 900 |
| 160 | #define USB_CH_IP_CUR_LVL_1P0 1000 |
| 161 | #define USB_CH_IP_CUR_LVL_1P1 1100 |
| 162 | #define USB_CH_IP_CUR_LVL_1P3 1300 |
| 163 | #define USB_CH_IP_CUR_LVL_1P4 1400 |
| 164 | #define USB_CH_IP_CUR_LVL_1P5 1500 |
| 165 | |
| 166 | #define VBAT_TRESH_IP_CUR_RED 3800 |
| 167 | |
| 168 | #define to_ab8500_charger_usb_device_info(x) container_of((x), \ |
| 169 | struct ab8500_charger, usb_chg) |
| 170 | #define to_ab8500_charger_ac_device_info(x) container_of((x), \ |
| 171 | struct ab8500_charger, ac_chg) |
| 172 | |
| 173 | /** |
| 174 | * struct ab8500_charger_interrupts - ab8500 interupts |
| 175 | * @name: name of the interrupt |
| 176 | * @isr function pointer to the isr |
| 177 | */ |
| 178 | struct ab8500_charger_interrupts { |
| 179 | char *name; |
| 180 | irqreturn_t (*isr)(int irq, void *data); |
| 181 | }; |
| 182 | |
| 183 | struct ab8500_charger_info { |
| 184 | int charger_connected; |
| 185 | int charger_online; |
| 186 | int charger_voltage; |
| 187 | int cv_active; |
| 188 | bool wd_expired; |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 189 | int charger_current; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 190 | }; |
| 191 | |
| 192 | struct ab8500_charger_event_flags { |
| 193 | bool mainextchnotok; |
| 194 | bool main_thermal_prot; |
| 195 | bool usb_thermal_prot; |
| 196 | bool vbus_ovv; |
| 197 | bool usbchargernotok; |
| 198 | bool chgwdexp; |
| 199 | bool vbus_collapse; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 200 | bool vbus_drop_end; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 201 | }; |
| 202 | |
| 203 | struct ab8500_charger_usb_state { |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 204 | int usb_current; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 205 | int usb_current_tmp; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 206 | enum ab8500_usb_state state; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 207 | enum ab8500_usb_state state_tmp; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 208 | spinlock_t usb_lock; |
| 209 | }; |
| 210 | |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 211 | struct ab8500_charger_max_usb_in_curr { |
| 212 | int usb_type_max; |
| 213 | int set_max; |
| 214 | int calculated_max; |
| 215 | }; |
| 216 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 217 | /** |
| 218 | * struct ab8500_charger - ab8500 Charger device information |
| 219 | * @dev: Pointer to the structure device |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 220 | * @vbus_detected: VBUS detected |
| 221 | * @vbus_detected_start: |
| 222 | * VBUS detected during startup |
| 223 | * @ac_conn: This will be true when the AC charger has been plugged |
| 224 | * @vddadc_en_ac: Indicate if VDD ADC supply is enabled because AC |
| 225 | * charger is enabled |
| 226 | * @vddadc_en_usb: Indicate if VDD ADC supply is enabled because USB |
| 227 | * charger is enabled |
| 228 | * @vbat Battery voltage |
| 229 | * @old_vbat Previously measured battery voltage |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 230 | * @usb_device_is_unrecognised USB device is unrecognised by the hardware |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 231 | * @autopower Indicate if we should have automatic pwron after pwrloss |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 232 | * @autopower_cfg platform specific power config support for "pwron after pwrloss" |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 233 | * @invalid_charger_detect_state State when forcing AB to use invalid charger |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 234 | * @is_aca_rid: Incicate if accessory is ACA type |
| 235 | * @current_stepping_sessions: |
| 236 | * Counter for current stepping sessions |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 237 | * @parent: Pointer to the struct ab8500 |
| 238 | * @gpadc: Pointer to the struct gpadc |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 239 | * @bm: Platform specific battery management information |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 240 | * @flags: Structure for information about events triggered |
| 241 | * @usb_state: Structure for usb stack information |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 242 | * @max_usb_in_curr: Max USB charger input current |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 243 | * @ac_chg: AC charger power supply |
| 244 | * @usb_chg: USB charger power supply |
| 245 | * @ac: Structure that holds the AC charger properties |
| 246 | * @usb: Structure that holds the USB charger properties |
| 247 | * @regu: Pointer to the struct regulator |
| 248 | * @charger_wq: Work queue for the IRQs and checking HW state |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 249 | * @usb_ipt_crnt_lock: Lock to protect VBUS input current setting from mutuals |
| 250 | * @pm_lock: Lock to prevent system to suspend |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 251 | * @check_vbat_work Work for checking vbat threshold to adjust vbus current |
| 252 | * @check_hw_failure_work: Work for checking HW state |
| 253 | * @check_usbchgnotok_work: Work for checking USB charger not ok status |
| 254 | * @kick_wd_work: Work for kicking the charger watchdog in case |
| 255 | * of ABB rev 1.* due to the watchog logic bug |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 256 | * @ac_charger_attached_work: Work for checking if AC charger is still |
| 257 | * connected |
| 258 | * @usb_charger_attached_work: Work for checking if USB charger is still |
| 259 | * connected |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 260 | * @ac_work: Work for checking AC charger connection |
| 261 | * @detect_usb_type_work: Work for detecting the USB type connected |
| 262 | * @usb_link_status_work: Work for checking the new USB link status |
| 263 | * @usb_state_changed_work: Work for checking USB state |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 264 | * @attach_work: Work for detecting USB type |
| 265 | * @vbus_drop_end_work: Work for detecting VBUS drop end |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 266 | * @check_main_thermal_prot_work: |
| 267 | * Work for checking Main thermal status |
| 268 | * @check_usb_thermal_prot_work: |
| 269 | * Work for checking USB thermal status |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 270 | * @charger_attached_mutex: For controlling the wakelock |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 271 | */ |
| 272 | struct ab8500_charger { |
| 273 | struct device *dev; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 274 | bool vbus_detected; |
| 275 | bool vbus_detected_start; |
| 276 | bool ac_conn; |
| 277 | bool vddadc_en_ac; |
| 278 | bool vddadc_en_usb; |
| 279 | int vbat; |
| 280 | int old_vbat; |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 281 | bool usb_device_is_unrecognised; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 282 | bool autopower; |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 283 | bool autopower_cfg; |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 284 | int invalid_charger_detect_state; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 285 | int is_aca_rid; |
| 286 | atomic_t current_stepping_sessions; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 287 | struct ab8500 *parent; |
| 288 | struct ab8500_gpadc *gpadc; |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 289 | struct abx500_bm_data *bm; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 290 | struct ab8500_charger_event_flags flags; |
| 291 | struct ab8500_charger_usb_state usb_state; |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 292 | struct ab8500_charger_max_usb_in_curr max_usb_in_curr; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 293 | struct ux500_charger ac_chg; |
| 294 | struct ux500_charger usb_chg; |
| 295 | struct ab8500_charger_info ac; |
| 296 | struct ab8500_charger_info usb; |
| 297 | struct regulator *regu; |
| 298 | struct workqueue_struct *charger_wq; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 299 | struct mutex usb_ipt_crnt_lock; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 300 | struct delayed_work check_vbat_work; |
| 301 | struct delayed_work check_hw_failure_work; |
| 302 | struct delayed_work check_usbchgnotok_work; |
| 303 | struct delayed_work kick_wd_work; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 304 | struct delayed_work usb_state_changed_work; |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 305 | struct delayed_work attach_work; |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 306 | struct delayed_work ac_charger_attached_work; |
| 307 | struct delayed_work usb_charger_attached_work; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 308 | struct delayed_work vbus_drop_end_work; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 309 | struct work_struct ac_work; |
| 310 | struct work_struct detect_usb_type_work; |
| 311 | struct work_struct usb_link_status_work; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 312 | struct work_struct check_main_thermal_prot_work; |
| 313 | struct work_struct check_usb_thermal_prot_work; |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 314 | struct usb_phy *usb_phy; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 315 | struct notifier_block nb; |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 316 | struct mutex charger_attached_mutex; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 317 | }; |
| 318 | |
| 319 | /* AC properties */ |
| 320 | static enum power_supply_property ab8500_charger_ac_props[] = { |
| 321 | POWER_SUPPLY_PROP_HEALTH, |
| 322 | POWER_SUPPLY_PROP_PRESENT, |
| 323 | POWER_SUPPLY_PROP_ONLINE, |
| 324 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 325 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
| 326 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 327 | }; |
| 328 | |
| 329 | /* USB properties */ |
| 330 | static enum power_supply_property ab8500_charger_usb_props[] = { |
| 331 | POWER_SUPPLY_PROP_HEALTH, |
| 332 | POWER_SUPPLY_PROP_CURRENT_AVG, |
| 333 | POWER_SUPPLY_PROP_PRESENT, |
| 334 | POWER_SUPPLY_PROP_ONLINE, |
| 335 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 336 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
| 337 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 338 | }; |
| 339 | |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 340 | /* |
| 341 | * Function for enabling and disabling sw fallback mode |
| 342 | * should always be disabled when no charger is connected. |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 343 | */ |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 344 | static void ab8500_enable_disable_sw_fallback(struct ab8500_charger *di, |
| 345 | bool fallback) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 346 | { |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 347 | u8 val; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 348 | u8 reg; |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 349 | u8 bank; |
| 350 | u8 bit; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 351 | int ret; |
| 352 | |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 353 | dev_dbg(di->dev, "SW Fallback: %d\n", fallback); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 354 | |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 355 | if (is_ab8500(di->parent)) { |
| 356 | bank = 0x15; |
| 357 | reg = 0x0; |
| 358 | bit = 3; |
| 359 | } else { |
| 360 | bank = AB8500_SYS_CTRL1_BLOCK; |
| 361 | reg = AB8500_SW_CONTROL_FALLBACK; |
| 362 | bit = 0; |
| 363 | } |
| 364 | |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 365 | /* read the register containing fallback bit */ |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 366 | ret = abx500_get_register_interruptible(di->dev, bank, reg, &val); |
| 367 | if (ret < 0) { |
| 368 | dev_err(di->dev, "%d read failed\n", __LINE__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 369 | return; |
| 370 | } |
| 371 | |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 372 | if (is_ab8500(di->parent)) { |
| 373 | /* enable the OPT emulation registers */ |
| 374 | ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x2); |
| 375 | if (ret) { |
| 376 | dev_err(di->dev, "%d write failed\n", __LINE__); |
| 377 | goto disable_otp; |
| 378 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 379 | } |
| 380 | |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 381 | if (fallback) |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 382 | val |= (1 << bit); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 383 | else |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 384 | val &= ~(1 << bit); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 385 | |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 386 | /* write back the changed fallback bit value to register */ |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 387 | ret = abx500_set_register_interruptible(di->dev, bank, reg, val); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 388 | if (ret) { |
| 389 | dev_err(di->dev, "%d write failed\n", __LINE__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 390 | } |
| 391 | |
Nicolas Guion | b016322 | 2012-05-23 15:59:43 +0200 | [diff] [blame] | 392 | disable_otp: |
| 393 | if (is_ab8500(di->parent)) { |
| 394 | /* disable the set OTP registers again */ |
| 395 | ret = abx500_set_register_interruptible(di->dev, 0x11, 0x00, 0x0); |
| 396 | if (ret) { |
| 397 | dev_err(di->dev, "%d write failed\n", __LINE__); |
| 398 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 399 | } |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * ab8500_power_supply_changed - a wrapper with local extentions for |
| 404 | * power_supply_changed |
| 405 | * @di: pointer to the ab8500_charger structure |
| 406 | * @psy: pointer to power_supply_that have changed. |
| 407 | * |
| 408 | */ |
| 409 | static void ab8500_power_supply_changed(struct ab8500_charger *di, |
| 410 | struct power_supply *psy) |
| 411 | { |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 412 | if (di->autopower_cfg) { |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 413 | if (!di->usb.charger_connected && |
| 414 | !di->ac.charger_connected && |
| 415 | di->autopower) { |
| 416 | di->autopower = false; |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 417 | ab8500_enable_disable_sw_fallback(di, false); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 418 | } else if (!di->autopower && |
| 419 | (di->ac.charger_connected || |
| 420 | di->usb.charger_connected)) { |
| 421 | di->autopower = true; |
Paer-Olof Haakansson | defbfa9 | 2013-01-11 13:12:49 +0000 | [diff] [blame] | 422 | ab8500_enable_disable_sw_fallback(di, true); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 423 | } |
| 424 | } |
| 425 | power_supply_changed(psy); |
| 426 | } |
| 427 | |
| 428 | static void ab8500_charger_set_usb_connected(struct ab8500_charger *di, |
| 429 | bool connected) |
| 430 | { |
| 431 | if (connected != di->usb.charger_connected) { |
| 432 | dev_dbg(di->dev, "USB connected:%i\n", connected); |
| 433 | di->usb.charger_connected = connected; |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 434 | |
| 435 | if (!connected) |
| 436 | di->flags.vbus_drop_end = false; |
| 437 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 438 | sysfs_notify(&di->usb_chg.psy.dev->kobj, NULL, "present"); |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 439 | |
| 440 | if (connected) { |
| 441 | mutex_lock(&di->charger_attached_mutex); |
| 442 | mutex_unlock(&di->charger_attached_mutex); |
| 443 | |
| 444 | queue_delayed_work(di->charger_wq, |
| 445 | &di->usb_charger_attached_work, |
| 446 | HZ); |
| 447 | } else { |
| 448 | cancel_delayed_work_sync(&di->usb_charger_attached_work); |
| 449 | mutex_lock(&di->charger_attached_mutex); |
| 450 | mutex_unlock(&di->charger_attached_mutex); |
| 451 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 452 | } |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * ab8500_charger_get_ac_voltage() - get ac charger voltage |
| 457 | * @di: pointer to the ab8500_charger structure |
| 458 | * |
| 459 | * Returns ac charger voltage (on success) |
| 460 | */ |
| 461 | static int ab8500_charger_get_ac_voltage(struct ab8500_charger *di) |
| 462 | { |
| 463 | int vch; |
| 464 | |
| 465 | /* Only measure voltage if the charger is connected */ |
| 466 | if (di->ac.charger_connected) { |
| 467 | vch = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_V); |
| 468 | if (vch < 0) |
| 469 | dev_err(di->dev, "%s gpadc conv failed,\n", __func__); |
| 470 | } else { |
| 471 | vch = 0; |
| 472 | } |
| 473 | return vch; |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * ab8500_charger_ac_cv() - check if the main charger is in CV mode |
| 478 | * @di: pointer to the ab8500_charger structure |
| 479 | * |
| 480 | * Returns ac charger CV mode (on success) else error code |
| 481 | */ |
| 482 | static int ab8500_charger_ac_cv(struct ab8500_charger *di) |
| 483 | { |
| 484 | u8 val; |
| 485 | int ret = 0; |
| 486 | |
| 487 | /* Only check CV mode if the charger is online */ |
| 488 | if (di->ac.charger_online) { |
| 489 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 490 | AB8500_CH_STATUS1_REG, &val); |
| 491 | if (ret < 0) { |
| 492 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | if (val & MAIN_CH_CV_ON) |
| 497 | ret = 1; |
| 498 | else |
| 499 | ret = 0; |
| 500 | } |
| 501 | |
| 502 | return ret; |
| 503 | } |
| 504 | |
| 505 | /** |
| 506 | * ab8500_charger_get_vbus_voltage() - get vbus voltage |
| 507 | * @di: pointer to the ab8500_charger structure |
| 508 | * |
| 509 | * This function returns the vbus voltage. |
| 510 | * Returns vbus voltage (on success) |
| 511 | */ |
| 512 | static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di) |
| 513 | { |
| 514 | int vch; |
| 515 | |
| 516 | /* Only measure voltage if the charger is connected */ |
| 517 | if (di->usb.charger_connected) { |
| 518 | vch = ab8500_gpadc_convert(di->gpadc, VBUS_V); |
| 519 | if (vch < 0) |
| 520 | dev_err(di->dev, "%s gpadc conv failed\n", __func__); |
| 521 | } else { |
| 522 | vch = 0; |
| 523 | } |
| 524 | return vch; |
| 525 | } |
| 526 | |
| 527 | /** |
| 528 | * ab8500_charger_get_usb_current() - get usb charger current |
| 529 | * @di: pointer to the ab8500_charger structure |
| 530 | * |
| 531 | * This function returns the usb charger current. |
| 532 | * Returns usb current (on success) and error code on failure |
| 533 | */ |
| 534 | static int ab8500_charger_get_usb_current(struct ab8500_charger *di) |
| 535 | { |
| 536 | int ich; |
| 537 | |
| 538 | /* Only measure current if the charger is online */ |
| 539 | if (di->usb.charger_online) { |
| 540 | ich = ab8500_gpadc_convert(di->gpadc, USB_CHARGER_C); |
| 541 | if (ich < 0) |
| 542 | dev_err(di->dev, "%s gpadc conv failed\n", __func__); |
| 543 | } else { |
| 544 | ich = 0; |
| 545 | } |
| 546 | return ich; |
| 547 | } |
| 548 | |
| 549 | /** |
| 550 | * ab8500_charger_get_ac_current() - get ac charger current |
| 551 | * @di: pointer to the ab8500_charger structure |
| 552 | * |
| 553 | * This function returns the ac charger current. |
| 554 | * Returns ac current (on success) and error code on failure. |
| 555 | */ |
| 556 | static int ab8500_charger_get_ac_current(struct ab8500_charger *di) |
| 557 | { |
| 558 | int ich; |
| 559 | |
| 560 | /* Only measure current if the charger is online */ |
| 561 | if (di->ac.charger_online) { |
| 562 | ich = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_C); |
| 563 | if (ich < 0) |
| 564 | dev_err(di->dev, "%s gpadc conv failed\n", __func__); |
| 565 | } else { |
| 566 | ich = 0; |
| 567 | } |
| 568 | return ich; |
| 569 | } |
| 570 | |
| 571 | /** |
| 572 | * ab8500_charger_usb_cv() - check if the usb charger is in CV mode |
| 573 | * @di: pointer to the ab8500_charger structure |
| 574 | * |
| 575 | * Returns ac charger CV mode (on success) else error code |
| 576 | */ |
| 577 | static int ab8500_charger_usb_cv(struct ab8500_charger *di) |
| 578 | { |
| 579 | int ret; |
| 580 | u8 val; |
| 581 | |
| 582 | /* Only check CV mode if the charger is online */ |
| 583 | if (di->usb.charger_online) { |
| 584 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 585 | AB8500_CH_USBCH_STAT1_REG, &val); |
| 586 | if (ret < 0) { |
| 587 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | if (val & USB_CH_CV_ON) |
| 592 | ret = 1; |
| 593 | else |
| 594 | ret = 0; |
| 595 | } else { |
| 596 | ret = 0; |
| 597 | } |
| 598 | |
| 599 | return ret; |
| 600 | } |
| 601 | |
| 602 | /** |
| 603 | * ab8500_charger_detect_chargers() - Detect the connected chargers |
| 604 | * @di: pointer to the ab8500_charger structure |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 605 | * @probe: if probe, don't delay and wait for HW |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 606 | * |
| 607 | * Returns the type of charger connected. |
| 608 | * For USB it will not mean we can actually charge from it |
| 609 | * but that there is a USB cable connected that we have to |
| 610 | * identify. This is used during startup when we don't get |
| 611 | * interrupts of the charger detection |
| 612 | * |
| 613 | * Returns an integer value, that means, |
| 614 | * NO_PW_CONN no power supply is connected |
| 615 | * AC_PW_CONN if the AC power supply is connected |
| 616 | * USB_PW_CONN if the USB power supply is connected |
| 617 | * AC_PW_CONN + USB_PW_CONN if USB and AC power supplies are both connected |
| 618 | */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 619 | static int ab8500_charger_detect_chargers(struct ab8500_charger *di, bool probe) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 620 | { |
| 621 | int result = NO_PW_CONN; |
| 622 | int ret; |
| 623 | u8 val; |
| 624 | |
| 625 | /* Check for AC charger */ |
| 626 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 627 | AB8500_CH_STATUS1_REG, &val); |
| 628 | if (ret < 0) { |
| 629 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 630 | return ret; |
| 631 | } |
| 632 | |
| 633 | if (val & MAIN_CH_DET) |
| 634 | result = AC_PW_CONN; |
| 635 | |
| 636 | /* Check for USB charger */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 637 | |
| 638 | if (!probe) { |
| 639 | /* |
| 640 | * AB8500 says VBUS_DET_DBNC1 & VBUS_DET_DBNC100 |
| 641 | * when disconnecting ACA even though no |
| 642 | * charger was connected. Try waiting a little |
| 643 | * longer than the 100 ms of VBUS_DET_DBNC100... |
| 644 | */ |
| 645 | msleep(110); |
| 646 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 647 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 648 | AB8500_CH_USBCH_STAT1_REG, &val); |
| 649 | if (ret < 0) { |
| 650 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 651 | return ret; |
| 652 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 653 | dev_dbg(di->dev, |
| 654 | "%s AB8500_CH_USBCH_STAT1_REG %x\n", __func__, |
| 655 | val); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 656 | if ((val & VBUS_DET_DBNC1) && (val & VBUS_DET_DBNC100)) |
| 657 | result |= USB_PW_CONN; |
| 658 | |
| 659 | return result; |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * ab8500_charger_max_usb_curr() - get the max curr for the USB type |
| 664 | * @di: pointer to the ab8500_charger structure |
| 665 | * @link_status: the identified USB type |
| 666 | * |
| 667 | * Get the maximum current that is allowed to be drawn from the host |
| 668 | * based on the USB type. |
| 669 | * Returns error code in case of failure else 0 on success |
| 670 | */ |
| 671 | static int ab8500_charger_max_usb_curr(struct ab8500_charger *di, |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 672 | enum ab8500_charger_link_status link_status) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 673 | { |
| 674 | int ret = 0; |
| 675 | |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 676 | di->usb_device_is_unrecognised = false; |
| 677 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 678 | /* |
| 679 | * Platform only supports USB 2.0. |
| 680 | * This means that charging current from USB source |
| 681 | * is maximum 500 mA. Every occurence of USB_STAT_*_HOST_* |
| 682 | * should set USB_CH_IP_CUR_LVL_0P5. |
| 683 | */ |
| 684 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 685 | switch (link_status) { |
| 686 | case USB_STAT_STD_HOST_NC: |
| 687 | case USB_STAT_STD_HOST_C_NS: |
| 688 | case USB_STAT_STD_HOST_C_S: |
| 689 | dev_dbg(di->dev, "USB Type - Standard host is " |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 690 | "detected through USB driver\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 691 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 692 | di->is_aca_rid = 0; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 693 | break; |
| 694 | case USB_STAT_HOST_CHG_HS_CHIRP: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 695 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 696 | di->is_aca_rid = 0; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 697 | break; |
| 698 | case USB_STAT_HOST_CHG_HS: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 699 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 700 | di->is_aca_rid = 0; |
| 701 | break; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 702 | case USB_STAT_ACA_RID_C_HS: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 703 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P9; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 704 | di->is_aca_rid = 0; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 705 | break; |
| 706 | case USB_STAT_ACA_RID_A: |
| 707 | /* |
| 708 | * Dedicated charger level minus maximum current accessory |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 709 | * can consume (900mA). Closest level is 500mA |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 710 | */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 711 | dev_dbg(di->dev, "USB_STAT_ACA_RID_A detected\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 712 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 713 | di->is_aca_rid = 1; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 714 | break; |
| 715 | case USB_STAT_ACA_RID_B: |
| 716 | /* |
| 717 | * Dedicated charger level minus 120mA (20mA for ACA and |
| 718 | * 100mA for potential accessory). Closest level is 1300mA |
| 719 | */ |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 720 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P3; |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 721 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status, |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 722 | di->max_usb_in_curr.usb_type_max); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 723 | di->is_aca_rid = 1; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 724 | break; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 725 | case USB_STAT_HOST_CHG_NM: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 726 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 727 | di->is_aca_rid = 0; |
| 728 | break; |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 729 | case USB_STAT_DEDICATED_CHG: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 730 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 731 | di->is_aca_rid = 0; |
| 732 | break; |
| 733 | case USB_STAT_ACA_RID_C_HS_CHIRP: |
| 734 | case USB_STAT_ACA_RID_C_NM: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 735 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 736 | di->is_aca_rid = 1; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 737 | break; |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 738 | case USB_STAT_NOT_CONFIGURED: |
| 739 | if (di->vbus_detected) { |
| 740 | di->usb_device_is_unrecognised = true; |
| 741 | dev_dbg(di->dev, "USB Type - Legacy charger.\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 742 | di->max_usb_in_curr.usb_type_max = |
| 743 | USB_CH_IP_CUR_LVL_1P5; |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 744 | break; |
| 745 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 746 | case USB_STAT_HM_IDGND: |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 747 | dev_err(di->dev, "USB Type - Charging not allowed\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 748 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 749 | ret = -ENXIO; |
| 750 | break; |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 751 | case USB_STAT_RESERVED: |
| 752 | if (is_ab8500(di->parent)) { |
| 753 | di->flags.vbus_collapse = true; |
| 754 | dev_err(di->dev, "USB Type - USB_STAT_RESERVED " |
| 755 | "VBUS has collapsed\n"); |
| 756 | ret = -ENXIO; |
| 757 | break; |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 758 | } else { |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 759 | dev_dbg(di->dev, "USB Type - Charging not allowed\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 760 | di->max_usb_in_curr.usb_type_max = |
| 761 | USB_CH_IP_CUR_LVL_0P05; |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 762 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 763 | link_status, |
| 764 | di->max_usb_in_curr.usb_type_max); |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 765 | ret = -ENXIO; |
| 766 | break; |
| 767 | } |
| 768 | break; |
| 769 | case USB_STAT_CARKIT_1: |
| 770 | case USB_STAT_CARKIT_2: |
| 771 | case USB_STAT_ACA_DOCK_CHARGER: |
| 772 | case USB_STAT_CHARGER_LINE_1: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 773 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 774 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status, |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 775 | di->max_usb_in_curr.usb_type_max); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 776 | case USB_STAT_NOT_VALID_LINK: |
| 777 | dev_err(di->dev, "USB Type invalid - try charging anyway\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 778 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 779 | break; |
| 780 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 781 | default: |
| 782 | dev_err(di->dev, "USB Type - Unknown\n"); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 783 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 784 | ret = -ENXIO; |
| 785 | break; |
| 786 | }; |
| 787 | |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 788 | di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 789 | dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 790 | link_status, di->max_usb_in_curr.set_max); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 791 | |
| 792 | return ret; |
| 793 | } |
| 794 | |
| 795 | /** |
| 796 | * ab8500_charger_read_usb_type() - read the type of usb connected |
| 797 | * @di: pointer to the ab8500_charger structure |
| 798 | * |
| 799 | * Detect the type of the plugged USB |
| 800 | * Returns error code in case of failure else 0 on success |
| 801 | */ |
| 802 | static int ab8500_charger_read_usb_type(struct ab8500_charger *di) |
| 803 | { |
| 804 | int ret; |
| 805 | u8 val; |
| 806 | |
| 807 | ret = abx500_get_register_interruptible(di->dev, |
| 808 | AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, &val); |
| 809 | if (ret < 0) { |
| 810 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 811 | return ret; |
| 812 | } |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 813 | if (is_ab8500(di->parent)) |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 814 | ret = abx500_get_register_interruptible(di->dev, AB8500_USB, |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 815 | AB8500_USB_LINE_STAT_REG, &val); |
| 816 | else |
| 817 | ret = abx500_get_register_interruptible(di->dev, |
| 818 | AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 819 | if (ret < 0) { |
| 820 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 821 | return ret; |
| 822 | } |
| 823 | |
| 824 | /* get the USB type */ |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 825 | if (is_ab8500(di->parent)) |
| 826 | val = (val & AB8500_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT; |
| 827 | else |
| 828 | val = (val & AB8505_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 829 | ret = ab8500_charger_max_usb_curr(di, |
| 830 | (enum ab8500_charger_link_status) val); |
| 831 | |
| 832 | return ret; |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * ab8500_charger_detect_usb_type() - get the type of usb connected |
| 837 | * @di: pointer to the ab8500_charger structure |
| 838 | * |
| 839 | * Detect the type of the plugged USB |
| 840 | * Returns error code in case of failure else 0 on success |
| 841 | */ |
| 842 | static int ab8500_charger_detect_usb_type(struct ab8500_charger *di) |
| 843 | { |
| 844 | int i, ret; |
| 845 | u8 val; |
| 846 | |
| 847 | /* |
| 848 | * On getting the VBUS rising edge detect interrupt there |
| 849 | * is a 250ms delay after which the register UsbLineStatus |
| 850 | * is filled with valid data. |
| 851 | */ |
| 852 | for (i = 0; i < 10; i++) { |
| 853 | msleep(250); |
| 854 | ret = abx500_get_register_interruptible(di->dev, |
| 855 | AB8500_INTERRUPT, AB8500_IT_SOURCE21_REG, |
| 856 | &val); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 857 | dev_dbg(di->dev, "%s AB8500_IT_SOURCE21_REG %x\n", |
| 858 | __func__, val); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 859 | if (ret < 0) { |
| 860 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 861 | return ret; |
| 862 | } |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 863 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 864 | if (is_ab8500(di->parent)) |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 865 | ret = abx500_get_register_interruptible(di->dev, |
| 866 | AB8500_USB, AB8500_USB_LINE_STAT_REG, &val); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 867 | else |
Hakan Berg | 74a8e34 | 2013-01-11 13:12:58 +0000 | [diff] [blame] | 868 | ret = abx500_get_register_interruptible(di->dev, |
| 869 | AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 870 | if (ret < 0) { |
| 871 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 872 | return ret; |
| 873 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 874 | dev_dbg(di->dev, "%s AB8500_USB_LINE_STAT_REG %x\n", __func__, |
| 875 | val); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 876 | /* |
| 877 | * Until the IT source register is read the UsbLineStatus |
| 878 | * register is not updated, hence doing the same |
| 879 | * Revisit this: |
| 880 | */ |
| 881 | |
| 882 | /* get the USB type */ |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 883 | if (is_ab8500(di->parent)) |
| 884 | val = (val & AB8500_USB_LINK_STATUS) >> |
| 885 | USB_LINK_STATUS_SHIFT; |
| 886 | else |
| 887 | val = (val & AB8505_USB_LINK_STATUS) >> |
| 888 | USB_LINK_STATUS_SHIFT; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 889 | if (val) |
| 890 | break; |
| 891 | } |
| 892 | ret = ab8500_charger_max_usb_curr(di, |
| 893 | (enum ab8500_charger_link_status) val); |
| 894 | |
| 895 | return ret; |
| 896 | } |
| 897 | |
| 898 | /* |
| 899 | * This array maps the raw hex value to charger voltage used by the AB8500 |
| 900 | * Values taken from the UM0836 |
| 901 | */ |
| 902 | static int ab8500_charger_voltage_map[] = { |
| 903 | 3500 , |
| 904 | 3525 , |
| 905 | 3550 , |
| 906 | 3575 , |
| 907 | 3600 , |
| 908 | 3625 , |
| 909 | 3650 , |
| 910 | 3675 , |
| 911 | 3700 , |
| 912 | 3725 , |
| 913 | 3750 , |
| 914 | 3775 , |
| 915 | 3800 , |
| 916 | 3825 , |
| 917 | 3850 , |
| 918 | 3875 , |
| 919 | 3900 , |
| 920 | 3925 , |
| 921 | 3950 , |
| 922 | 3975 , |
| 923 | 4000 , |
| 924 | 4025 , |
| 925 | 4050 , |
| 926 | 4060 , |
| 927 | 4070 , |
| 928 | 4080 , |
| 929 | 4090 , |
| 930 | 4100 , |
| 931 | 4110 , |
| 932 | 4120 , |
| 933 | 4130 , |
| 934 | 4140 , |
| 935 | 4150 , |
| 936 | 4160 , |
| 937 | 4170 , |
| 938 | 4180 , |
| 939 | 4190 , |
| 940 | 4200 , |
| 941 | 4210 , |
| 942 | 4220 , |
| 943 | 4230 , |
| 944 | 4240 , |
| 945 | 4250 , |
| 946 | 4260 , |
| 947 | 4270 , |
| 948 | 4280 , |
| 949 | 4290 , |
| 950 | 4300 , |
| 951 | 4310 , |
| 952 | 4320 , |
| 953 | 4330 , |
| 954 | 4340 , |
| 955 | 4350 , |
| 956 | 4360 , |
| 957 | 4370 , |
| 958 | 4380 , |
| 959 | 4390 , |
| 960 | 4400 , |
| 961 | 4410 , |
| 962 | 4420 , |
| 963 | 4430 , |
| 964 | 4440 , |
| 965 | 4450 , |
| 966 | 4460 , |
| 967 | 4470 , |
| 968 | 4480 , |
| 969 | 4490 , |
| 970 | 4500 , |
| 971 | 4510 , |
| 972 | 4520 , |
| 973 | 4530 , |
| 974 | 4540 , |
| 975 | 4550 , |
| 976 | 4560 , |
| 977 | 4570 , |
| 978 | 4580 , |
| 979 | 4590 , |
| 980 | 4600 , |
| 981 | }; |
| 982 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 983 | static int ab8500_voltage_to_regval(int voltage) |
| 984 | { |
| 985 | int i; |
| 986 | |
| 987 | /* Special case for voltage below 3.5V */ |
| 988 | if (voltage < ab8500_charger_voltage_map[0]) |
| 989 | return LOW_VOLT_REG; |
| 990 | |
| 991 | for (i = 1; i < ARRAY_SIZE(ab8500_charger_voltage_map); i++) { |
| 992 | if (voltage < ab8500_charger_voltage_map[i]) |
| 993 | return i - 1; |
| 994 | } |
| 995 | |
| 996 | /* If not last element, return error */ |
| 997 | i = ARRAY_SIZE(ab8500_charger_voltage_map) - 1; |
| 998 | if (voltage == ab8500_charger_voltage_map[i]) |
| 999 | return i; |
| 1000 | else |
| 1001 | return -1; |
| 1002 | } |
| 1003 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1004 | static int ab8500_current_to_regval(struct ab8500_charger *di, int curr) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1005 | { |
| 1006 | int i; |
| 1007 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1008 | if (curr < di->bm->chg_output_curr[0]) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1009 | return 0; |
| 1010 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1011 | for (i = 0; i < di->bm->n_chg_out_curr; i++) { |
| 1012 | if (curr < di->bm->chg_output_curr[i]) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1013 | return i - 1; |
| 1014 | } |
| 1015 | |
| 1016 | /* If not last element, return error */ |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1017 | i = di->bm->n_chg_out_curr - 1; |
| 1018 | if (curr == di->bm->chg_output_curr[i]) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1019 | return i; |
| 1020 | else |
| 1021 | return -1; |
| 1022 | } |
| 1023 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1024 | static int ab8500_vbus_in_curr_to_regval(struct ab8500_charger *di, int curr) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1025 | { |
| 1026 | int i; |
| 1027 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1028 | if (curr < di->bm->chg_input_curr[0]) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1029 | return 0; |
| 1030 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1031 | for (i = 0; i < di->bm->n_chg_in_curr; i++) { |
| 1032 | if (curr < di->bm->chg_input_curr[i]) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1033 | return i - 1; |
| 1034 | } |
| 1035 | |
| 1036 | /* If not last element, return error */ |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1037 | i = di->bm->n_chg_in_curr - 1; |
| 1038 | if (curr == di->bm->chg_input_curr[i]) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1039 | return i; |
| 1040 | else |
| 1041 | return -1; |
| 1042 | } |
| 1043 | |
| 1044 | /** |
| 1045 | * ab8500_charger_get_usb_cur() - get usb current |
| 1046 | * @di: pointer to the ab8500_charger structre |
| 1047 | * |
| 1048 | * The usb stack provides the maximum current that can be drawn from |
| 1049 | * the standard usb host. This will be in mA. |
| 1050 | * This function converts current in mA to a value that can be written |
| 1051 | * to the register. Returns -1 if charging is not allowed |
| 1052 | */ |
| 1053 | static int ab8500_charger_get_usb_cur(struct ab8500_charger *di) |
| 1054 | { |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1055 | int ret = 0; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1056 | switch (di->usb_state.usb_current) { |
| 1057 | case 100: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1058 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P09; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1059 | break; |
| 1060 | case 200: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1061 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P19; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1062 | break; |
| 1063 | case 300: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1064 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P29; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1065 | break; |
| 1066 | case 400: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1067 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P38; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1068 | break; |
| 1069 | case 500: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1070 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1071 | break; |
| 1072 | default: |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1073 | di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05; |
| 1074 | ret = -EPERM; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1075 | break; |
| 1076 | }; |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1077 | di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max; |
| 1078 | return ret; |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * ab8500_charger_check_continue_stepping() - Check to allow stepping |
| 1083 | * @di: pointer to the ab8500_charger structure |
| 1084 | * @reg: select what charger register to check |
| 1085 | * |
| 1086 | * Check if current stepping should be allowed to continue. |
| 1087 | * Checks if charger source has not collapsed. If it has, further stepping |
| 1088 | * is not allowed. |
| 1089 | */ |
| 1090 | static bool ab8500_charger_check_continue_stepping(struct ab8500_charger *di, |
| 1091 | int reg) |
| 1092 | { |
| 1093 | if (reg == AB8500_USBCH_IPT_CRNTLVL_REG) |
| 1094 | return !di->flags.vbus_drop_end; |
| 1095 | else |
| 1096 | return true; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1097 | } |
| 1098 | |
| 1099 | /** |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1100 | * ab8500_charger_set_current() - set charger current |
| 1101 | * @di: pointer to the ab8500_charger structure |
| 1102 | * @ich: charger current, in mA |
| 1103 | * @reg: select what charger register to set |
| 1104 | * |
| 1105 | * Set charger current. |
| 1106 | * There is no state machine in the AB to step up/down the charger |
| 1107 | * current to avoid dips and spikes on MAIN, VBUS and VBAT when |
| 1108 | * charging is started. Instead we need to implement |
| 1109 | * this charger current step-up/down here. |
| 1110 | * Returns error code in case of failure else 0(on success) |
| 1111 | */ |
| 1112 | static int ab8500_charger_set_current(struct ab8500_charger *di, |
| 1113 | int ich, int reg) |
| 1114 | { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1115 | int ret = 0; |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1116 | int curr_index, prev_curr_index, shift_value, i; |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1117 | u8 reg_value; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1118 | u32 step_udelay; |
| 1119 | bool no_stepping = false; |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1120 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1121 | atomic_inc(&di->current_stepping_sessions); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1122 | |
| 1123 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 1124 | reg, ®_value); |
| 1125 | if (ret < 0) { |
| 1126 | dev_err(di->dev, "%s read failed\n", __func__); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1127 | goto exit_set_current; |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1128 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1129 | |
| 1130 | switch (reg) { |
| 1131 | case AB8500_MCH_IPT_CURLVL_REG: |
| 1132 | shift_value = MAIN_CH_INPUT_CURR_SHIFT; |
| 1133 | prev_curr_index = (reg_value >> shift_value); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1134 | curr_index = ab8500_current_to_regval(di, ich); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1135 | step_udelay = STEP_UDELAY; |
| 1136 | if (!di->ac.charger_connected) |
| 1137 | no_stepping = true; |
| 1138 | break; |
| 1139 | case AB8500_USBCH_IPT_CRNTLVL_REG: |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1140 | if (is_ab8540(di->parent)) |
| 1141 | shift_value = AB8540_VBUS_IN_CURR_LIM_SHIFT; |
| 1142 | else |
| 1143 | shift_value = VBUS_IN_CURR_LIM_SHIFT; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1144 | prev_curr_index = (reg_value >> shift_value); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1145 | curr_index = ab8500_vbus_in_curr_to_regval(di, ich); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1146 | step_udelay = STEP_UDELAY * 100; |
| 1147 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1148 | if (!di->usb.charger_connected) |
| 1149 | no_stepping = true; |
| 1150 | break; |
| 1151 | case AB8500_CH_OPT_CRNTLVL_REG: |
| 1152 | shift_value = 0; |
| 1153 | prev_curr_index = (reg_value >> shift_value); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1154 | curr_index = ab8500_current_to_regval(di, ich); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1155 | step_udelay = STEP_UDELAY; |
| 1156 | if (curr_index && (curr_index - prev_curr_index) > 1) |
| 1157 | step_udelay *= 100; |
| 1158 | |
| 1159 | if (!di->usb.charger_connected && !di->ac.charger_connected) |
| 1160 | no_stepping = true; |
| 1161 | |
| 1162 | break; |
| 1163 | default: |
| 1164 | dev_err(di->dev, "%s current register not valid\n", __func__); |
| 1165 | ret = -ENXIO; |
| 1166 | goto exit_set_current; |
| 1167 | } |
| 1168 | |
| 1169 | if (curr_index < 0) { |
| 1170 | dev_err(di->dev, "requested current limit out-of-range\n"); |
| 1171 | ret = -ENXIO; |
| 1172 | goto exit_set_current; |
| 1173 | } |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1174 | |
| 1175 | /* only update current if it's been changed */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1176 | if (prev_curr_index == curr_index) { |
| 1177 | dev_dbg(di->dev, "%s current not changed for reg: 0x%02x\n", |
| 1178 | __func__, reg); |
| 1179 | ret = 0; |
| 1180 | goto exit_set_current; |
| 1181 | } |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1182 | |
| 1183 | dev_dbg(di->dev, "%s set charger current: %d mA for reg: 0x%02x\n", |
| 1184 | __func__, ich, reg); |
| 1185 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1186 | if (no_stepping) { |
| 1187 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1188 | reg, (u8)curr_index << shift_value); |
| 1189 | if (ret) |
| 1190 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1191 | } else if (prev_curr_index > curr_index) { |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1192 | for (i = prev_curr_index - 1; i >= curr_index; i--) { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1193 | dev_dbg(di->dev, "curr change_1 to: %x for 0x%02x\n", |
| 1194 | (u8) i << shift_value, reg); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1195 | ret = abx500_set_register_interruptible(di->dev, |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1196 | AB8500_CHARGER, reg, (u8)i << shift_value); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1197 | if (ret) { |
| 1198 | dev_err(di->dev, "%s write failed\n", __func__); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1199 | goto exit_set_current; |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1200 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1201 | if (i != curr_index) |
| 1202 | usleep_range(step_udelay, step_udelay * 2); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1203 | } |
| 1204 | } else { |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1205 | bool allow = true; |
| 1206 | for (i = prev_curr_index + 1; i <= curr_index && allow; i++) { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1207 | dev_dbg(di->dev, "curr change_2 to: %x for 0x%02x\n", |
| 1208 | (u8)i << shift_value, reg); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1209 | ret = abx500_set_register_interruptible(di->dev, |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1210 | AB8500_CHARGER, reg, (u8)i << shift_value); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1211 | if (ret) { |
| 1212 | dev_err(di->dev, "%s write failed\n", __func__); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1213 | goto exit_set_current; |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1214 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1215 | if (i != curr_index) |
| 1216 | usleep_range(step_udelay, step_udelay * 2); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1217 | |
| 1218 | allow = ab8500_charger_check_continue_stepping(di, reg); |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1219 | } |
| 1220 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1221 | |
| 1222 | exit_set_current: |
| 1223 | atomic_dec(&di->current_stepping_sessions); |
| 1224 | |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1225 | return ret; |
| 1226 | } |
| 1227 | |
| 1228 | /** |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1229 | * ab8500_charger_set_vbus_in_curr() - set VBUS input current limit |
| 1230 | * @di: pointer to the ab8500_charger structure |
| 1231 | * @ich_in: charger input current limit |
| 1232 | * |
| 1233 | * Sets the current that can be drawn from the USB host |
| 1234 | * Returns error code in case of failure else 0(on success) |
| 1235 | */ |
| 1236 | static int ab8500_charger_set_vbus_in_curr(struct ab8500_charger *di, |
| 1237 | int ich_in) |
| 1238 | { |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1239 | int min_value; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1240 | int ret; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1241 | |
| 1242 | /* We should always use to lowest current limit */ |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 1243 | min_value = min(di->bm->chg_params->usb_curr_max, ich_in); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1244 | if (di->max_usb_in_curr.set_max > 0) |
| 1245 | min_value = min(di->max_usb_in_curr.set_max, min_value); |
| 1246 | |
| 1247 | if (di->usb_state.usb_current >= 0) |
| 1248 | min_value = min(di->usb_state.usb_current, min_value); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1249 | |
| 1250 | switch (min_value) { |
| 1251 | case 100: |
| 1252 | if (di->vbat < VBAT_TRESH_IP_CUR_RED) |
| 1253 | min_value = USB_CH_IP_CUR_LVL_0P05; |
| 1254 | break; |
| 1255 | case 500: |
| 1256 | if (di->vbat < VBAT_TRESH_IP_CUR_RED) |
| 1257 | min_value = USB_CH_IP_CUR_LVL_0P45; |
| 1258 | break; |
| 1259 | default: |
| 1260 | break; |
| 1261 | } |
| 1262 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1263 | dev_info(di->dev, "VBUS input current limit set to %d mA\n", min_value); |
| 1264 | |
| 1265 | mutex_lock(&di->usb_ipt_crnt_lock); |
| 1266 | ret = ab8500_charger_set_current(di, min_value, |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1267 | AB8500_USBCH_IPT_CRNTLVL_REG); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1268 | mutex_unlock(&di->usb_ipt_crnt_lock); |
| 1269 | |
| 1270 | return ret; |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1271 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1272 | |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1273 | /** |
| 1274 | * ab8500_charger_set_main_in_curr() - set main charger input current |
| 1275 | * @di: pointer to the ab8500_charger structure |
| 1276 | * @ich_in: input charger current, in mA |
| 1277 | * |
| 1278 | * Set main charger input current. |
| 1279 | * Returns error code in case of failure else 0(on success) |
| 1280 | */ |
| 1281 | static int ab8500_charger_set_main_in_curr(struct ab8500_charger *di, |
| 1282 | int ich_in) |
| 1283 | { |
| 1284 | return ab8500_charger_set_current(di, ich_in, |
| 1285 | AB8500_MCH_IPT_CURLVL_REG); |
| 1286 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1287 | |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1288 | /** |
| 1289 | * ab8500_charger_set_output_curr() - set charger output current |
| 1290 | * @di: pointer to the ab8500_charger structure |
| 1291 | * @ich_out: output charger current, in mA |
| 1292 | * |
| 1293 | * Set charger output current. |
| 1294 | * Returns error code in case of failure else 0(on success) |
| 1295 | */ |
| 1296 | static int ab8500_charger_set_output_curr(struct ab8500_charger *di, |
| 1297 | int ich_out) |
| 1298 | { |
| 1299 | return ab8500_charger_set_current(di, ich_out, |
| 1300 | AB8500_CH_OPT_CRNTLVL_REG); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1301 | } |
| 1302 | |
| 1303 | /** |
| 1304 | * ab8500_charger_led_en() - turn on/off chargign led |
| 1305 | * @di: pointer to the ab8500_charger structure |
| 1306 | * @on: flag to turn on/off the chargign led |
| 1307 | * |
| 1308 | * Power ON/OFF charging LED indication |
| 1309 | * Returns error code in case of failure else 0(on success) |
| 1310 | */ |
| 1311 | static int ab8500_charger_led_en(struct ab8500_charger *di, int on) |
| 1312 | { |
| 1313 | int ret; |
| 1314 | |
| 1315 | if (on) { |
| 1316 | /* Power ON charging LED indicator, set LED current to 5mA */ |
| 1317 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1318 | AB8500_LED_INDICATOR_PWM_CTRL, |
| 1319 | (LED_IND_CUR_5MA | LED_INDICATOR_PWM_ENA)); |
| 1320 | if (ret) { |
| 1321 | dev_err(di->dev, "Power ON LED failed\n"); |
| 1322 | return ret; |
| 1323 | } |
| 1324 | /* LED indicator PWM duty cycle 252/256 */ |
| 1325 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1326 | AB8500_LED_INDICATOR_PWM_DUTY, |
| 1327 | LED_INDICATOR_PWM_DUTY_252_256); |
| 1328 | if (ret) { |
| 1329 | dev_err(di->dev, "Set LED PWM duty cycle failed\n"); |
| 1330 | return ret; |
| 1331 | } |
| 1332 | } else { |
| 1333 | /* Power off charging LED indicator */ |
| 1334 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1335 | AB8500_LED_INDICATOR_PWM_CTRL, |
| 1336 | LED_INDICATOR_PWM_DIS); |
| 1337 | if (ret) { |
| 1338 | dev_err(di->dev, "Power-off LED failed\n"); |
| 1339 | return ret; |
| 1340 | } |
| 1341 | } |
| 1342 | |
| 1343 | return ret; |
| 1344 | } |
| 1345 | |
| 1346 | /** |
| 1347 | * ab8500_charger_ac_en() - enable or disable ac charging |
| 1348 | * @di: pointer to the ab8500_charger structure |
| 1349 | * @enable: enable/disable flag |
| 1350 | * @vset: charging voltage |
| 1351 | * @iset: charging current |
| 1352 | * |
| 1353 | * Enable/Disable AC/Mains charging and turns on/off the charging led |
| 1354 | * respectively. |
| 1355 | **/ |
| 1356 | static int ab8500_charger_ac_en(struct ux500_charger *charger, |
| 1357 | int enable, int vset, int iset) |
| 1358 | { |
| 1359 | int ret; |
| 1360 | int volt_index; |
| 1361 | int curr_index; |
| 1362 | int input_curr_index; |
| 1363 | u8 overshoot = 0; |
| 1364 | |
| 1365 | struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger); |
| 1366 | |
| 1367 | if (enable) { |
| 1368 | /* Check if AC is connected */ |
| 1369 | if (!di->ac.charger_connected) { |
| 1370 | dev_err(di->dev, "AC charger not connected\n"); |
| 1371 | return -ENXIO; |
| 1372 | } |
| 1373 | |
| 1374 | /* Enable AC charging */ |
| 1375 | dev_dbg(di->dev, "Enable AC: %dmV %dmA\n", vset, iset); |
| 1376 | |
| 1377 | /* |
| 1378 | * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts |
| 1379 | * will be triggered everytime we enable the VDD ADC supply. |
| 1380 | * This will turn off charging for a short while. |
| 1381 | * It can be avoided by having the supply on when |
| 1382 | * there is a charger enabled. Normally the VDD ADC supply |
| 1383 | * is enabled everytime a GPADC conversion is triggered. We will |
| 1384 | * force it to be enabled from this driver to have |
| 1385 | * the GPADC module independant of the AB8500 chargers |
| 1386 | */ |
| 1387 | if (!di->vddadc_en_ac) { |
| 1388 | regulator_enable(di->regu); |
| 1389 | di->vddadc_en_ac = true; |
| 1390 | } |
| 1391 | |
| 1392 | /* Check if the requested voltage or current is valid */ |
| 1393 | volt_index = ab8500_voltage_to_regval(vset); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1394 | curr_index = ab8500_current_to_regval(di, iset); |
| 1395 | input_curr_index = ab8500_current_to_regval(di, |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 1396 | di->bm->chg_params->ac_curr_max); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1397 | if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) { |
| 1398 | dev_err(di->dev, |
| 1399 | "Charger voltage or current too high, " |
| 1400 | "charging not started\n"); |
| 1401 | return -ENXIO; |
| 1402 | } |
| 1403 | |
| 1404 | /* ChVoltLevel: maximum battery charging voltage */ |
| 1405 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1406 | AB8500_CH_VOLT_LVL_REG, (u8) volt_index); |
| 1407 | if (ret) { |
| 1408 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1409 | return ret; |
| 1410 | } |
| 1411 | /* MainChInputCurr: current that can be drawn from the charger*/ |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1412 | ret = ab8500_charger_set_main_in_curr(di, |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 1413 | di->bm->chg_params->ac_curr_max); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1414 | if (ret) { |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1415 | dev_err(di->dev, "%s Failed to set MainChInputCurr\n", |
| 1416 | __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1417 | return ret; |
| 1418 | } |
| 1419 | /* ChOutputCurentLevel: protected output current */ |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1420 | ret = ab8500_charger_set_output_curr(di, iset); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1421 | if (ret) { |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1422 | dev_err(di->dev, "%s " |
| 1423 | "Failed to set ChOutputCurentLevel\n", |
| 1424 | __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1425 | return ret; |
| 1426 | } |
| 1427 | |
| 1428 | /* Check if VBAT overshoot control should be enabled */ |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 1429 | if (!di->bm->enable_overshoot) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1430 | overshoot = MAIN_CH_NO_OVERSHOOT_ENA_N; |
| 1431 | |
| 1432 | /* Enable Main Charger */ |
| 1433 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1434 | AB8500_MCH_CTRL1, MAIN_CH_ENA | overshoot); |
| 1435 | if (ret) { |
| 1436 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1437 | return ret; |
| 1438 | } |
| 1439 | |
| 1440 | /* Power on charging LED indication */ |
| 1441 | ret = ab8500_charger_led_en(di, true); |
| 1442 | if (ret < 0) |
| 1443 | dev_err(di->dev, "failed to enable LED\n"); |
| 1444 | |
| 1445 | di->ac.charger_online = 1; |
| 1446 | } else { |
| 1447 | /* Disable AC charging */ |
| 1448 | if (is_ab8500_1p1_or_earlier(di->parent)) { |
| 1449 | /* |
| 1450 | * For ABB revision 1.0 and 1.1 there is a bug in the |
| 1451 | * watchdog logic. That means we have to continously |
| 1452 | * kick the charger watchdog even when no charger is |
| 1453 | * connected. This is only valid once the AC charger |
| 1454 | * has been enabled. This is a bug that is not handled |
| 1455 | * by the algorithm and the watchdog have to be kicked |
| 1456 | * by the charger driver when the AC charger |
| 1457 | * is disabled |
| 1458 | */ |
| 1459 | if (di->ac_conn) { |
| 1460 | queue_delayed_work(di->charger_wq, |
| 1461 | &di->kick_wd_work, |
| 1462 | round_jiffies(WD_KICK_INTERVAL)); |
| 1463 | } |
| 1464 | |
| 1465 | /* |
| 1466 | * We can't turn off charging completely |
| 1467 | * due to a bug in AB8500 cut1. |
| 1468 | * If we do, charging will not start again. |
| 1469 | * That is why we set the lowest voltage |
| 1470 | * and current possible |
| 1471 | */ |
| 1472 | ret = abx500_set_register_interruptible(di->dev, |
| 1473 | AB8500_CHARGER, |
| 1474 | AB8500_CH_VOLT_LVL_REG, CH_VOL_LVL_3P5); |
| 1475 | if (ret) { |
| 1476 | dev_err(di->dev, |
| 1477 | "%s write failed\n", __func__); |
| 1478 | return ret; |
| 1479 | } |
| 1480 | |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1481 | ret = ab8500_charger_set_output_curr(di, 0); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1482 | if (ret) { |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1483 | dev_err(di->dev, "%s " |
| 1484 | "Failed to set ChOutputCurentLevel\n", |
| 1485 | __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1486 | return ret; |
| 1487 | } |
| 1488 | } else { |
| 1489 | ret = abx500_set_register_interruptible(di->dev, |
| 1490 | AB8500_CHARGER, |
| 1491 | AB8500_MCH_CTRL1, 0); |
| 1492 | if (ret) { |
| 1493 | dev_err(di->dev, |
| 1494 | "%s write failed\n", __func__); |
| 1495 | return ret; |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | ret = ab8500_charger_led_en(di, false); |
| 1500 | if (ret < 0) |
| 1501 | dev_err(di->dev, "failed to disable LED\n"); |
| 1502 | |
| 1503 | di->ac.charger_online = 0; |
| 1504 | di->ac.wd_expired = false; |
| 1505 | |
| 1506 | /* Disable regulator if enabled */ |
| 1507 | if (di->vddadc_en_ac) { |
| 1508 | regulator_disable(di->regu); |
| 1509 | di->vddadc_en_ac = false; |
| 1510 | } |
| 1511 | |
| 1512 | dev_dbg(di->dev, "%s Disabled AC charging\n", __func__); |
| 1513 | } |
| 1514 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 1515 | |
| 1516 | return ret; |
| 1517 | } |
| 1518 | |
| 1519 | /** |
| 1520 | * ab8500_charger_usb_en() - enable usb charging |
| 1521 | * @di: pointer to the ab8500_charger structure |
| 1522 | * @enable: enable/disable flag |
| 1523 | * @vset: charging voltage |
| 1524 | * @ich_out: charger output current |
| 1525 | * |
| 1526 | * Enable/Disable USB charging and turns on/off the charging led respectively. |
| 1527 | * Returns error code in case of failure else 0(on success) |
| 1528 | */ |
| 1529 | static int ab8500_charger_usb_en(struct ux500_charger *charger, |
| 1530 | int enable, int vset, int ich_out) |
| 1531 | { |
| 1532 | int ret; |
| 1533 | int volt_index; |
| 1534 | int curr_index; |
| 1535 | u8 overshoot = 0; |
| 1536 | |
| 1537 | struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger); |
| 1538 | |
| 1539 | if (enable) { |
| 1540 | /* Check if USB is connected */ |
| 1541 | if (!di->usb.charger_connected) { |
| 1542 | dev_err(di->dev, "USB charger not connected\n"); |
| 1543 | return -ENXIO; |
| 1544 | } |
| 1545 | |
| 1546 | /* |
| 1547 | * Due to a bug in AB8500, BTEMP_HIGH/LOW interrupts |
| 1548 | * will be triggered everytime we enable the VDD ADC supply. |
| 1549 | * This will turn off charging for a short while. |
| 1550 | * It can be avoided by having the supply on when |
| 1551 | * there is a charger enabled. Normally the VDD ADC supply |
| 1552 | * is enabled everytime a GPADC conversion is triggered. We will |
| 1553 | * force it to be enabled from this driver to have |
| 1554 | * the GPADC module independant of the AB8500 chargers |
| 1555 | */ |
| 1556 | if (!di->vddadc_en_usb) { |
| 1557 | regulator_enable(di->regu); |
| 1558 | di->vddadc_en_usb = true; |
| 1559 | } |
| 1560 | |
| 1561 | /* Enable USB charging */ |
| 1562 | dev_dbg(di->dev, "Enable USB: %dmV %dmA\n", vset, ich_out); |
| 1563 | |
| 1564 | /* Check if the requested voltage or current is valid */ |
| 1565 | volt_index = ab8500_voltage_to_regval(vset); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 1566 | curr_index = ab8500_current_to_regval(di, ich_out); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1567 | if (volt_index < 0 || curr_index < 0) { |
| 1568 | dev_err(di->dev, |
| 1569 | "Charger voltage or current too high, " |
| 1570 | "charging not started\n"); |
| 1571 | return -ENXIO; |
| 1572 | } |
| 1573 | |
| 1574 | /* ChVoltLevel: max voltage upto which battery can be charged */ |
| 1575 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1576 | AB8500_CH_VOLT_LVL_REG, (u8) volt_index); |
| 1577 | if (ret) { |
| 1578 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1579 | return ret; |
| 1580 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1581 | /* Check if VBAT overshoot control should be enabled */ |
Lee Jones | b0284de | 2012-11-30 10:09:42 +0000 | [diff] [blame] | 1582 | if (!di->bm->enable_overshoot) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1583 | overshoot = USB_CHG_NO_OVERSHOOT_ENA_N; |
| 1584 | |
| 1585 | /* Enable USB Charger */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1586 | dev_dbg(di->dev, |
| 1587 | "Enabling USB with write to AB8500_USBCH_CTRL1_REG\n"); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1588 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1589 | AB8500_USBCH_CTRL1_REG, USB_CH_ENA | overshoot); |
| 1590 | if (ret) { |
| 1591 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1592 | return ret; |
| 1593 | } |
| 1594 | |
| 1595 | /* If success power on charging LED indication */ |
| 1596 | ret = ab8500_charger_led_en(di, true); |
| 1597 | if (ret < 0) |
| 1598 | dev_err(di->dev, "failed to enable LED\n"); |
| 1599 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1600 | di->usb.charger_online = 1; |
| 1601 | |
| 1602 | /* USBChInputCurr: current that can be drawn from the usb */ |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 1603 | ret = ab8500_charger_set_vbus_in_curr(di, |
| 1604 | di->max_usb_in_curr.usb_type_max); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1605 | if (ret) { |
| 1606 | dev_err(di->dev, "setting USBChInputCurr failed\n"); |
| 1607 | return ret; |
| 1608 | } |
| 1609 | |
| 1610 | /* ChOutputCurentLevel: protected output current */ |
| 1611 | ret = ab8500_charger_set_output_curr(di, ich_out); |
| 1612 | if (ret) { |
| 1613 | dev_err(di->dev, "%s " |
| 1614 | "Failed to set ChOutputCurentLevel\n", |
| 1615 | __func__); |
| 1616 | return ret; |
| 1617 | } |
| 1618 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1619 | queue_delayed_work(di->charger_wq, &di->check_vbat_work, HZ); |
| 1620 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1621 | } else { |
| 1622 | /* Disable USB charging */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1623 | dev_dbg(di->dev, "%s Disabled USB charging\n", __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1624 | ret = abx500_set_register_interruptible(di->dev, |
| 1625 | AB8500_CHARGER, |
| 1626 | AB8500_USBCH_CTRL1_REG, 0); |
| 1627 | if (ret) { |
| 1628 | dev_err(di->dev, |
| 1629 | "%s write failed\n", __func__); |
| 1630 | return ret; |
| 1631 | } |
| 1632 | |
| 1633 | ret = ab8500_charger_led_en(di, false); |
| 1634 | if (ret < 0) |
| 1635 | dev_err(di->dev, "failed to disable LED\n"); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1636 | /* USBChInputCurr: current that can be drawn from the usb */ |
| 1637 | ret = ab8500_charger_set_vbus_in_curr(di, 0); |
| 1638 | if (ret) { |
| 1639 | dev_err(di->dev, "setting USBChInputCurr failed\n"); |
| 1640 | return ret; |
| 1641 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1642 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 1643 | /* ChOutputCurentLevel: protected output current */ |
| 1644 | ret = ab8500_charger_set_output_curr(di, 0); |
| 1645 | if (ret) { |
| 1646 | dev_err(di->dev, "%s " |
| 1647 | "Failed to reset ChOutputCurentLevel\n", |
| 1648 | __func__); |
| 1649 | return ret; |
| 1650 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1651 | di->usb.charger_online = 0; |
| 1652 | di->usb.wd_expired = false; |
| 1653 | |
| 1654 | /* Disable regulator if enabled */ |
| 1655 | if (di->vddadc_en_usb) { |
| 1656 | regulator_disable(di->regu); |
| 1657 | di->vddadc_en_usb = false; |
| 1658 | } |
| 1659 | |
| 1660 | dev_dbg(di->dev, "%s Disabled USB charging\n", __func__); |
| 1661 | |
| 1662 | /* Cancel any pending Vbat check work */ |
| 1663 | if (delayed_work_pending(&di->check_vbat_work)) |
| 1664 | cancel_delayed_work(&di->check_vbat_work); |
| 1665 | |
| 1666 | } |
| 1667 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 1668 | |
| 1669 | return ret; |
| 1670 | } |
| 1671 | |
Lee Jones | 8891716 | 2013-02-13 11:39:19 +0000 | [diff] [blame] | 1672 | static int ab8500_external_charger_prepare(struct notifier_block *charger_nb, |
| 1673 | unsigned long event, void *data) |
| 1674 | { |
| 1675 | int ret; |
| 1676 | struct device *dev = data; |
| 1677 | /*Toggle External charger control pin*/ |
| 1678 | ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK, |
| 1679 | AB8500_SYS_CHARGER_CONTROL_REG, |
| 1680 | EXTERNAL_CHARGER_DISABLE_REG_VAL); |
| 1681 | if (ret < 0) { |
| 1682 | dev_err(dev, "write reg failed %d\n", ret); |
| 1683 | goto out; |
| 1684 | } |
| 1685 | ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK, |
| 1686 | AB8500_SYS_CHARGER_CONTROL_REG, |
| 1687 | EXTERNAL_CHARGER_ENABLE_REG_VAL); |
| 1688 | if (ret < 0) |
| 1689 | dev_err(dev, "Write reg failed %d\n", ret); |
| 1690 | |
| 1691 | out: |
| 1692 | return ret; |
| 1693 | } |
| 1694 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1695 | /** |
Lee Jones | 4dcdf57 | 2013-02-14 09:24:10 +0000 | [diff] [blame] | 1696 | * ab8500_charger_usb_check_enable() - enable usb charging |
| 1697 | * @charger: pointer to the ux500_charger structure |
| 1698 | * @vset: charging voltage |
| 1699 | * @iset: charger output current |
| 1700 | * |
| 1701 | * Check if the VBUS charger has been disconnected and reconnected without |
| 1702 | * AB8500 rising an interrupt. Returns 0 on success. |
| 1703 | */ |
| 1704 | static int ab8500_charger_usb_check_enable(struct ux500_charger *charger, |
| 1705 | int vset, int iset) |
| 1706 | { |
| 1707 | u8 usbch_ctrl1 = 0; |
| 1708 | int ret = 0; |
| 1709 | |
| 1710 | struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger); |
| 1711 | |
| 1712 | if (!di->usb.charger_connected) |
| 1713 | return ret; |
| 1714 | |
| 1715 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 1716 | AB8500_USBCH_CTRL1_REG, &usbch_ctrl1); |
| 1717 | if (ret < 0) { |
| 1718 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); |
| 1719 | return ret; |
| 1720 | } |
| 1721 | dev_dbg(di->dev, "USB charger ctrl: 0x%02x\n", usbch_ctrl1); |
| 1722 | |
| 1723 | if (!(usbch_ctrl1 & USB_CH_ENA)) { |
| 1724 | dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n"); |
| 1725 | |
| 1726 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 1727 | AB8500_CHARGER, AB8500_CHARGER_CTRL, |
| 1728 | DROP_COUNT_RESET, DROP_COUNT_RESET); |
| 1729 | if (ret < 0) { |
| 1730 | dev_err(di->dev, "ab8500 write failed %d\n", __LINE__); |
| 1731 | return ret; |
| 1732 | } |
| 1733 | |
| 1734 | ret = ab8500_charger_usb_en(&di->usb_chg, true, vset, iset); |
| 1735 | if (ret < 0) { |
| 1736 | dev_err(di->dev, "Failed to enable VBUS charger %d\n", |
| 1737 | __LINE__); |
| 1738 | return ret; |
| 1739 | } |
| 1740 | } |
| 1741 | return ret; |
| 1742 | } |
| 1743 | |
| 1744 | /** |
| 1745 | * ab8500_charger_ac_check_enable() - enable usb charging |
| 1746 | * @charger: pointer to the ux500_charger structure |
| 1747 | * @vset: charging voltage |
| 1748 | * @iset: charger output current |
| 1749 | * |
| 1750 | * Check if the AC charger has been disconnected and reconnected without |
| 1751 | * AB8500 rising an interrupt. Returns 0 on success. |
| 1752 | */ |
| 1753 | static int ab8500_charger_ac_check_enable(struct ux500_charger *charger, |
| 1754 | int vset, int iset) |
| 1755 | { |
| 1756 | u8 mainch_ctrl1 = 0; |
| 1757 | int ret = 0; |
| 1758 | |
| 1759 | struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger); |
| 1760 | |
| 1761 | if (!di->ac.charger_connected) |
| 1762 | return ret; |
| 1763 | |
| 1764 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 1765 | AB8500_MCH_CTRL1, &mainch_ctrl1); |
| 1766 | if (ret < 0) { |
| 1767 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); |
| 1768 | return ret; |
| 1769 | } |
| 1770 | dev_dbg(di->dev, "AC charger ctrl: 0x%02x\n", mainch_ctrl1); |
| 1771 | |
| 1772 | if (!(mainch_ctrl1 & MAIN_CH_ENA)) { |
| 1773 | dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n"); |
| 1774 | |
| 1775 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 1776 | AB8500_CHARGER, AB8500_CHARGER_CTRL, |
| 1777 | DROP_COUNT_RESET, DROP_COUNT_RESET); |
| 1778 | |
| 1779 | if (ret < 0) { |
| 1780 | dev_err(di->dev, "ab8500 write failed %d\n", __LINE__); |
| 1781 | return ret; |
| 1782 | } |
| 1783 | |
| 1784 | ret = ab8500_charger_ac_en(&di->usb_chg, true, vset, iset); |
| 1785 | if (ret < 0) { |
| 1786 | dev_err(di->dev, "failed to enable AC charger %d\n", |
| 1787 | __LINE__); |
| 1788 | return ret; |
| 1789 | } |
| 1790 | } |
| 1791 | return ret; |
| 1792 | } |
| 1793 | |
| 1794 | /** |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1795 | * ab8500_charger_watchdog_kick() - kick charger watchdog |
| 1796 | * @di: pointer to the ab8500_charger structure |
| 1797 | * |
| 1798 | * Kick charger watchdog |
| 1799 | * Returns error code in case of failure else 0(on success) |
| 1800 | */ |
| 1801 | static int ab8500_charger_watchdog_kick(struct ux500_charger *charger) |
| 1802 | { |
| 1803 | int ret; |
| 1804 | struct ab8500_charger *di; |
| 1805 | |
| 1806 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) |
| 1807 | di = to_ab8500_charger_ac_device_info(charger); |
| 1808 | else if (charger->psy.type == POWER_SUPPLY_TYPE_USB) |
| 1809 | di = to_ab8500_charger_usb_device_info(charger); |
| 1810 | else |
| 1811 | return -ENXIO; |
| 1812 | |
| 1813 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 1814 | AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); |
| 1815 | if (ret) |
| 1816 | dev_err(di->dev, "Failed to kick WD!\n"); |
| 1817 | |
| 1818 | return ret; |
| 1819 | } |
| 1820 | |
| 1821 | /** |
| 1822 | * ab8500_charger_update_charger_current() - update charger current |
| 1823 | * @di: pointer to the ab8500_charger structure |
| 1824 | * |
| 1825 | * Update the charger output current for the specified charger |
| 1826 | * Returns error code in case of failure else 0(on success) |
| 1827 | */ |
| 1828 | static int ab8500_charger_update_charger_current(struct ux500_charger *charger, |
| 1829 | int ich_out) |
| 1830 | { |
| 1831 | int ret; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1832 | struct ab8500_charger *di; |
| 1833 | |
| 1834 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) |
| 1835 | di = to_ab8500_charger_ac_device_info(charger); |
| 1836 | else if (charger->psy.type == POWER_SUPPLY_TYPE_USB) |
| 1837 | di = to_ab8500_charger_usb_device_info(charger); |
| 1838 | else |
| 1839 | return -ENXIO; |
| 1840 | |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1841 | ret = ab8500_charger_set_output_curr(di, ich_out); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1842 | if (ret) { |
Johan Bjornstedt | f8e96df | 2012-01-18 12:44:55 +0100 | [diff] [blame] | 1843 | dev_err(di->dev, "%s " |
| 1844 | "Failed to set ChOutputCurentLevel\n", |
| 1845 | __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1846 | return ret; |
| 1847 | } |
| 1848 | |
| 1849 | /* Reset the main and usb drop input current measurement counter */ |
| 1850 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
Lee Jones | 4dcdf57 | 2013-02-14 09:24:10 +0000 | [diff] [blame] | 1851 | AB8500_CHARGER_CTRL, DROP_COUNT_RESET); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1852 | if (ret) { |
| 1853 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1854 | return ret; |
| 1855 | } |
| 1856 | |
| 1857 | return ret; |
| 1858 | } |
| 1859 | |
Lee Jones | db43e6c | 2013-02-14 12:39:15 +0000 | [diff] [blame] | 1860 | /** |
| 1861 | * ab8540_charger_power_path_enable() - enable usb power path mode |
| 1862 | * @charger: pointer to the ux500_charger structure |
| 1863 | * @enable: enable/disable flag |
| 1864 | * |
| 1865 | * Enable or disable the power path for usb mode |
| 1866 | * Returns error code in case of failure else 0(on success) |
| 1867 | */ |
| 1868 | static int ab8540_charger_power_path_enable(struct ux500_charger *charger, |
| 1869 | bool enable) |
| 1870 | { |
| 1871 | int ret; |
| 1872 | struct ab8500_charger *di; |
| 1873 | |
| 1874 | if (charger->psy.type == POWER_SUPPLY_TYPE_USB) |
| 1875 | di = to_ab8500_charger_usb_device_info(charger); |
| 1876 | else |
| 1877 | return -ENXIO; |
| 1878 | |
| 1879 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 1880 | AB8500_CHARGER, AB8540_USB_PP_MODE_REG, |
| 1881 | BUS_POWER_PATH_MODE_ENA, enable); |
| 1882 | if (ret) { |
| 1883 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1884 | return ret; |
| 1885 | } |
| 1886 | |
| 1887 | return ret; |
| 1888 | } |
| 1889 | |
| 1890 | |
| 1891 | /** |
| 1892 | * ab8540_charger_usb_pre_chg_enable() - enable usb pre change |
| 1893 | * @charger: pointer to the ux500_charger structure |
| 1894 | * @enable: enable/disable flag |
| 1895 | * |
| 1896 | * Enable or disable the pre-chage for usb mode |
| 1897 | * Returns error code in case of failure else 0(on success) |
| 1898 | */ |
| 1899 | static int ab8540_charger_usb_pre_chg_enable(struct ux500_charger *charger, |
| 1900 | bool enable) |
| 1901 | { |
| 1902 | int ret; |
| 1903 | struct ab8500_charger *di; |
| 1904 | |
| 1905 | if (charger->psy.type == POWER_SUPPLY_TYPE_USB) |
| 1906 | di = to_ab8500_charger_usb_device_info(charger); |
| 1907 | else |
| 1908 | return -ENXIO; |
| 1909 | |
| 1910 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 1911 | AB8500_CHARGER, AB8540_USB_PP_CHR_REG, |
| 1912 | BUS_POWER_PATH_PRECHG_ENA, enable); |
| 1913 | if (ret) { |
| 1914 | dev_err(di->dev, "%s write failed\n", __func__); |
| 1915 | return ret; |
| 1916 | } |
| 1917 | |
| 1918 | return ret; |
| 1919 | } |
| 1920 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 1921 | static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data) |
| 1922 | { |
| 1923 | struct power_supply *psy; |
| 1924 | struct power_supply *ext; |
| 1925 | struct ab8500_charger *di; |
| 1926 | union power_supply_propval ret; |
| 1927 | int i, j; |
| 1928 | bool psy_found = false; |
| 1929 | struct ux500_charger *usb_chg; |
| 1930 | |
| 1931 | usb_chg = (struct ux500_charger *)data; |
| 1932 | psy = &usb_chg->psy; |
| 1933 | |
| 1934 | di = to_ab8500_charger_usb_device_info(usb_chg); |
| 1935 | |
| 1936 | ext = dev_get_drvdata(dev); |
| 1937 | |
| 1938 | /* For all psy where the driver name appears in any supplied_to */ |
| 1939 | for (i = 0; i < ext->num_supplicants; i++) { |
| 1940 | if (!strcmp(ext->supplied_to[i], psy->name)) |
| 1941 | psy_found = true; |
| 1942 | } |
| 1943 | |
| 1944 | if (!psy_found) |
| 1945 | return 0; |
| 1946 | |
| 1947 | /* Go through all properties for the psy */ |
| 1948 | for (j = 0; j < ext->num_properties; j++) { |
| 1949 | enum power_supply_property prop; |
| 1950 | prop = ext->properties[j]; |
| 1951 | |
| 1952 | if (ext->get_property(ext, prop, &ret)) |
| 1953 | continue; |
| 1954 | |
| 1955 | switch (prop) { |
| 1956 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| 1957 | switch (ext->type) { |
| 1958 | case POWER_SUPPLY_TYPE_BATTERY: |
| 1959 | di->vbat = ret.intval / 1000; |
| 1960 | break; |
| 1961 | default: |
| 1962 | break; |
| 1963 | } |
| 1964 | break; |
| 1965 | default: |
| 1966 | break; |
| 1967 | } |
| 1968 | } |
| 1969 | return 0; |
| 1970 | } |
| 1971 | |
| 1972 | /** |
| 1973 | * ab8500_charger_check_vbat_work() - keep vbus current within spec |
| 1974 | * @work pointer to the work_struct structure |
| 1975 | * |
| 1976 | * Due to a asic bug it is necessary to lower the input current to the vbus |
| 1977 | * charger when charging with at some specific levels. This issue is only valid |
| 1978 | * for below a certain battery voltage. This function makes sure that the |
| 1979 | * the allowed current limit isn't exceeded. |
| 1980 | */ |
| 1981 | static void ab8500_charger_check_vbat_work(struct work_struct *work) |
| 1982 | { |
| 1983 | int t = 10; |
| 1984 | struct ab8500_charger *di = container_of(work, |
| 1985 | struct ab8500_charger, check_vbat_work.work); |
| 1986 | |
| 1987 | class_for_each_device(power_supply_class, NULL, |
| 1988 | &di->usb_chg.psy, ab8500_charger_get_ext_psy_data); |
| 1989 | |
| 1990 | /* First run old_vbat is 0. */ |
| 1991 | if (di->old_vbat == 0) |
| 1992 | di->old_vbat = di->vbat; |
| 1993 | |
| 1994 | if (!((di->old_vbat <= VBAT_TRESH_IP_CUR_RED && |
| 1995 | di->vbat <= VBAT_TRESH_IP_CUR_RED) || |
| 1996 | (di->old_vbat > VBAT_TRESH_IP_CUR_RED && |
| 1997 | di->vbat > VBAT_TRESH_IP_CUR_RED))) { |
| 1998 | |
| 1999 | dev_dbg(di->dev, "Vbat did cross threshold, curr: %d, new: %d," |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2000 | " old: %d\n", di->max_usb_in_curr.usb_type_max, |
| 2001 | di->vbat, di->old_vbat); |
| 2002 | ab8500_charger_set_vbus_in_curr(di, |
| 2003 | di->max_usb_in_curr.usb_type_max); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2004 | power_supply_changed(&di->usb_chg.psy); |
| 2005 | } |
| 2006 | |
| 2007 | di->old_vbat = di->vbat; |
| 2008 | |
| 2009 | /* |
| 2010 | * No need to check the battery voltage every second when not close to |
| 2011 | * the threshold. |
| 2012 | */ |
| 2013 | if (di->vbat < (VBAT_TRESH_IP_CUR_RED + 100) && |
| 2014 | (di->vbat > (VBAT_TRESH_IP_CUR_RED - 100))) |
| 2015 | t = 1; |
| 2016 | |
| 2017 | queue_delayed_work(di->charger_wq, &di->check_vbat_work, t * HZ); |
| 2018 | } |
| 2019 | |
| 2020 | /** |
| 2021 | * ab8500_charger_check_hw_failure_work() - check main charger failure |
| 2022 | * @work: pointer to the work_struct structure |
| 2023 | * |
| 2024 | * Work queue function for checking the main charger status |
| 2025 | */ |
| 2026 | static void ab8500_charger_check_hw_failure_work(struct work_struct *work) |
| 2027 | { |
| 2028 | int ret; |
| 2029 | u8 reg_value; |
| 2030 | |
| 2031 | struct ab8500_charger *di = container_of(work, |
| 2032 | struct ab8500_charger, check_hw_failure_work.work); |
| 2033 | |
| 2034 | /* Check if the status bits for HW failure is still active */ |
| 2035 | if (di->flags.mainextchnotok) { |
| 2036 | ret = abx500_get_register_interruptible(di->dev, |
| 2037 | AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value); |
| 2038 | if (ret < 0) { |
| 2039 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 2040 | return; |
| 2041 | } |
| 2042 | if (!(reg_value & MAIN_CH_NOK)) { |
| 2043 | di->flags.mainextchnotok = false; |
| 2044 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 2045 | } |
| 2046 | } |
| 2047 | if (di->flags.vbus_ovv) { |
| 2048 | ret = abx500_get_register_interruptible(di->dev, |
| 2049 | AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, |
| 2050 | ®_value); |
| 2051 | if (ret < 0) { |
| 2052 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 2053 | return; |
| 2054 | } |
| 2055 | if (!(reg_value & VBUS_OVV_TH)) { |
| 2056 | di->flags.vbus_ovv = false; |
| 2057 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2058 | } |
| 2059 | } |
| 2060 | /* If we still have a failure, schedule a new check */ |
| 2061 | if (di->flags.mainextchnotok || di->flags.vbus_ovv) { |
| 2062 | queue_delayed_work(di->charger_wq, |
| 2063 | &di->check_hw_failure_work, round_jiffies(HZ)); |
| 2064 | } |
| 2065 | } |
| 2066 | |
| 2067 | /** |
| 2068 | * ab8500_charger_kick_watchdog_work() - kick the watchdog |
| 2069 | * @work: pointer to the work_struct structure |
| 2070 | * |
| 2071 | * Work queue function for kicking the charger watchdog. |
| 2072 | * |
| 2073 | * For ABB revision 1.0 and 1.1 there is a bug in the watchdog |
| 2074 | * logic. That means we have to continously kick the charger |
| 2075 | * watchdog even when no charger is connected. This is only |
| 2076 | * valid once the AC charger has been enabled. This is |
| 2077 | * a bug that is not handled by the algorithm and the |
| 2078 | * watchdog have to be kicked by the charger driver |
| 2079 | * when the AC charger is disabled |
| 2080 | */ |
| 2081 | static void ab8500_charger_kick_watchdog_work(struct work_struct *work) |
| 2082 | { |
| 2083 | int ret; |
| 2084 | |
| 2085 | struct ab8500_charger *di = container_of(work, |
| 2086 | struct ab8500_charger, kick_wd_work.work); |
| 2087 | |
| 2088 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 2089 | AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); |
| 2090 | if (ret) |
| 2091 | dev_err(di->dev, "Failed to kick WD!\n"); |
| 2092 | |
| 2093 | /* Schedule a new watchdog kick */ |
| 2094 | queue_delayed_work(di->charger_wq, |
| 2095 | &di->kick_wd_work, round_jiffies(WD_KICK_INTERVAL)); |
| 2096 | } |
| 2097 | |
| 2098 | /** |
| 2099 | * ab8500_charger_ac_work() - work to get and set main charger status |
| 2100 | * @work: pointer to the work_struct structure |
| 2101 | * |
| 2102 | * Work queue function for checking the main charger status |
| 2103 | */ |
| 2104 | static void ab8500_charger_ac_work(struct work_struct *work) |
| 2105 | { |
| 2106 | int ret; |
| 2107 | |
| 2108 | struct ab8500_charger *di = container_of(work, |
| 2109 | struct ab8500_charger, ac_work); |
| 2110 | |
| 2111 | /* |
| 2112 | * Since we can't be sure that the events are received |
| 2113 | * synchronously, we have the check if the main charger is |
| 2114 | * connected by reading the status register |
| 2115 | */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2116 | ret = ab8500_charger_detect_chargers(di, false); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2117 | if (ret < 0) |
| 2118 | return; |
| 2119 | |
| 2120 | if (ret & AC_PW_CONN) { |
| 2121 | di->ac.charger_connected = 1; |
| 2122 | di->ac_conn = true; |
| 2123 | } else { |
| 2124 | di->ac.charger_connected = 0; |
| 2125 | } |
| 2126 | |
| 2127 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 2128 | sysfs_notify(&di->ac_chg.psy.dev->kobj, NULL, "present"); |
| 2129 | } |
| 2130 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 2131 | static void ab8500_charger_usb_attached_work(struct work_struct *work) |
| 2132 | { |
| 2133 | struct ab8500_charger *di = container_of(work, |
| 2134 | struct ab8500_charger, |
| 2135 | usb_charger_attached_work.work); |
| 2136 | int usbch = (USB_CH_VBUSDROP | USB_CH_VBUSDETDBNC); |
| 2137 | int ret, i; |
| 2138 | u8 statval; |
| 2139 | |
| 2140 | for (i = 0; i < 10; i++) { |
| 2141 | ret = abx500_get_register_interruptible(di->dev, |
| 2142 | AB8500_CHARGER, |
| 2143 | AB8500_CH_USBCH_STAT1_REG, |
| 2144 | &statval); |
| 2145 | if (ret < 0) { |
| 2146 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); |
| 2147 | goto reschedule; |
| 2148 | } |
| 2149 | if ((statval & usbch) != usbch) |
| 2150 | goto reschedule; |
| 2151 | |
| 2152 | msleep(CHARGER_STATUS_POLL); |
| 2153 | } |
| 2154 | |
| 2155 | ab8500_charger_usb_en(&di->usb_chg, 0, 0, 0); |
| 2156 | |
| 2157 | mutex_lock(&di->charger_attached_mutex); |
| 2158 | mutex_unlock(&di->charger_attached_mutex); |
| 2159 | |
| 2160 | return; |
| 2161 | |
| 2162 | reschedule: |
| 2163 | queue_delayed_work(di->charger_wq, |
| 2164 | &di->usb_charger_attached_work, |
| 2165 | HZ); |
| 2166 | } |
| 2167 | |
| 2168 | static void ab8500_charger_ac_attached_work(struct work_struct *work) |
| 2169 | { |
| 2170 | |
| 2171 | struct ab8500_charger *di = container_of(work, |
| 2172 | struct ab8500_charger, |
| 2173 | ac_charger_attached_work.work); |
| 2174 | int mainch = (MAIN_CH_STATUS2_MAINCHGDROP | |
| 2175 | MAIN_CH_STATUS2_MAINCHARGERDETDBNC); |
| 2176 | int ret, i; |
| 2177 | u8 statval; |
| 2178 | |
| 2179 | for (i = 0; i < 10; i++) { |
| 2180 | ret = abx500_get_register_interruptible(di->dev, |
| 2181 | AB8500_CHARGER, |
| 2182 | AB8500_CH_STATUS2_REG, |
| 2183 | &statval); |
| 2184 | if (ret < 0) { |
| 2185 | dev_err(di->dev, "ab8500 read failed %d\n", __LINE__); |
| 2186 | goto reschedule; |
| 2187 | } |
| 2188 | |
| 2189 | if ((statval & mainch) != mainch) |
| 2190 | goto reschedule; |
| 2191 | |
| 2192 | msleep(CHARGER_STATUS_POLL); |
| 2193 | } |
| 2194 | |
| 2195 | ab8500_charger_ac_en(&di->ac_chg, 0, 0, 0); |
| 2196 | queue_work(di->charger_wq, &di->ac_work); |
| 2197 | |
| 2198 | mutex_lock(&di->charger_attached_mutex); |
| 2199 | mutex_unlock(&di->charger_attached_mutex); |
| 2200 | |
| 2201 | return; |
| 2202 | |
| 2203 | reschedule: |
| 2204 | queue_delayed_work(di->charger_wq, |
| 2205 | &di->ac_charger_attached_work, |
| 2206 | HZ); |
| 2207 | } |
| 2208 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2209 | /** |
| 2210 | * ab8500_charger_detect_usb_type_work() - work to detect USB type |
| 2211 | * @work: Pointer to the work_struct structure |
| 2212 | * |
| 2213 | * Detect the type of USB plugged |
| 2214 | */ |
Anton Vorontsov | 64eb9b0 | 2012-03-14 04:43:11 +0400 | [diff] [blame] | 2215 | static void ab8500_charger_detect_usb_type_work(struct work_struct *work) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2216 | { |
| 2217 | int ret; |
| 2218 | |
| 2219 | struct ab8500_charger *di = container_of(work, |
| 2220 | struct ab8500_charger, detect_usb_type_work); |
| 2221 | |
| 2222 | /* |
| 2223 | * Since we can't be sure that the events are received |
| 2224 | * synchronously, we have the check if is |
| 2225 | * connected by reading the status register |
| 2226 | */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2227 | ret = ab8500_charger_detect_chargers(di, false); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2228 | if (ret < 0) |
| 2229 | return; |
| 2230 | |
| 2231 | if (!(ret & USB_PW_CONN)) { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2232 | dev_dbg(di->dev, "%s di->vbus_detected = false\n", __func__); |
| 2233 | di->vbus_detected = false; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2234 | ab8500_charger_set_usb_connected(di, false); |
| 2235 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2236 | } else { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2237 | dev_dbg(di->dev, "%s di->vbus_detected = true\n", __func__); |
| 2238 | di->vbus_detected = true; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2239 | |
| 2240 | if (is_ab8500_1p1_or_earlier(di->parent)) { |
| 2241 | ret = ab8500_charger_detect_usb_type(di); |
| 2242 | if (!ret) { |
| 2243 | ab8500_charger_set_usb_connected(di, true); |
| 2244 | ab8500_power_supply_changed(di, |
| 2245 | &di->usb_chg.psy); |
| 2246 | } |
| 2247 | } else { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2248 | /* |
| 2249 | * For ABB cut2.0 and onwards we have an IRQ, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2250 | * USB_LINK_STATUS that will be triggered when the USB |
| 2251 | * link status changes. The exception is USB connected |
| 2252 | * during startup. Then we don't get a |
| 2253 | * USB_LINK_STATUS IRQ |
| 2254 | */ |
| 2255 | if (di->vbus_detected_start) { |
| 2256 | di->vbus_detected_start = false; |
| 2257 | ret = ab8500_charger_detect_usb_type(di); |
| 2258 | if (!ret) { |
| 2259 | ab8500_charger_set_usb_connected(di, |
| 2260 | true); |
| 2261 | ab8500_power_supply_changed(di, |
| 2262 | &di->usb_chg.psy); |
| 2263 | } |
| 2264 | } |
| 2265 | } |
| 2266 | } |
| 2267 | } |
| 2268 | |
| 2269 | /** |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2270 | * ab8500_charger_usb_link_attach_work() - work to detect USB type |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 2271 | * @work: pointer to the work_struct structure |
| 2272 | * |
| 2273 | * Detect the type of USB plugged |
| 2274 | */ |
| 2275 | static void ab8500_charger_usb_link_attach_work(struct work_struct *work) |
| 2276 | { |
| 2277 | struct ab8500_charger *di = |
| 2278 | container_of(work, struct ab8500_charger, attach_work.work); |
| 2279 | int ret; |
| 2280 | |
| 2281 | /* Update maximum input current if USB enumeration is not detected */ |
| 2282 | if (!di->usb.charger_online) { |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2283 | ret = ab8500_charger_set_vbus_in_curr(di, |
| 2284 | di->max_usb_in_curr.usb_type_max); |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 2285 | if (ret) |
| 2286 | return; |
| 2287 | } |
| 2288 | |
| 2289 | ab8500_charger_set_usb_connected(di, true); |
| 2290 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2291 | } |
| 2292 | |
| 2293 | /** |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2294 | * ab8500_charger_usb_link_status_work() - work to detect USB type |
| 2295 | * @work: pointer to the work_struct structure |
| 2296 | * |
| 2297 | * Detect the type of USB plugged |
| 2298 | */ |
| 2299 | static void ab8500_charger_usb_link_status_work(struct work_struct *work) |
| 2300 | { |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2301 | int detected_chargers; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2302 | int ret; |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2303 | u8 val; |
Hakan Berg | d433766 | 2012-07-26 11:10:35 +0200 | [diff] [blame] | 2304 | u8 link_status; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2305 | |
| 2306 | struct ab8500_charger *di = container_of(work, |
| 2307 | struct ab8500_charger, usb_link_status_work); |
| 2308 | |
| 2309 | /* |
| 2310 | * Since we can't be sure that the events are received |
| 2311 | * synchronously, we have the check if is |
| 2312 | * connected by reading the status register |
| 2313 | */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2314 | detected_chargers = ab8500_charger_detect_chargers(di, false); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2315 | if (detected_chargers < 0) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2316 | return; |
| 2317 | |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2318 | /* |
| 2319 | * Some chargers that breaks the USB spec is |
| 2320 | * identified as invalid by AB8500 and it refuse |
| 2321 | * to start the charging process. but by jumping |
| 2322 | * thru a few hoops it can be forced to start. |
| 2323 | */ |
Marcus Cooper | 88efdb8 | 2012-08-30 14:12:53 +0200 | [diff] [blame] | 2324 | if (is_ab8500(di->parent)) |
| 2325 | ret = abx500_get_register_interruptible(di->dev, AB8500_USB, |
| 2326 | AB8500_USB_LINE_STAT_REG, &val); |
| 2327 | else |
| 2328 | ret = abx500_get_register_interruptible(di->dev, AB8500_USB, |
| 2329 | AB8500_USB_LINK1_STAT_REG, &val); |
| 2330 | |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2331 | if (ret >= 0) |
| 2332 | dev_dbg(di->dev, "UsbLineStatus register = 0x%02x\n", val); |
| 2333 | else |
| 2334 | dev_dbg(di->dev, "Error reading USB link status\n"); |
| 2335 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2336 | if (is_ab8500(di->parent)) |
Hakan Berg | d433766 | 2012-07-26 11:10:35 +0200 | [diff] [blame] | 2337 | link_status = AB8500_USB_LINK_STATUS; |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2338 | else |
| 2339 | link_status = AB8505_USB_LINK_STATUS; |
Hakan Berg | d433766 | 2012-07-26 11:10:35 +0200 | [diff] [blame] | 2340 | |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2341 | if (detected_chargers & USB_PW_CONN) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2342 | if (((val & link_status) >> USB_LINK_STATUS_SHIFT) == |
| 2343 | USB_STAT_NOT_VALID_LINK && |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2344 | di->invalid_charger_detect_state == 0) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2345 | dev_dbg(di->dev, |
| 2346 | "Invalid charger detected, state= 0\n"); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2347 | /*Enable charger*/ |
| 2348 | abx500_mask_and_set_register_interruptible(di->dev, |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2349 | AB8500_CHARGER, AB8500_USBCH_CTRL1_REG, |
| 2350 | USB_CH_ENA, USB_CH_ENA); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2351 | /*Enable charger detection*/ |
Marcus Cooper | b3ea5f4 | 2012-08-29 17:56:19 +0200 | [diff] [blame^] | 2352 | abx500_mask_and_set_register_interruptible(di->dev, |
| 2353 | AB8500_USB, AB8500_USB_LINE_CTRL2_REG, |
| 2354 | USB_CH_DET, USB_CH_DET); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2355 | di->invalid_charger_detect_state = 1; |
| 2356 | /*exit and wait for new link status interrupt.*/ |
| 2357 | return; |
| 2358 | |
| 2359 | } |
| 2360 | if (di->invalid_charger_detect_state == 1) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2361 | dev_dbg(di->dev, |
| 2362 | "Invalid charger detected, state= 1\n"); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2363 | /*Stop charger detection*/ |
Marcus Cooper | b3ea5f4 | 2012-08-29 17:56:19 +0200 | [diff] [blame^] | 2364 | abx500_mask_and_set_register_interruptible(di->dev, |
| 2365 | AB8500_USB, AB8500_USB_LINE_CTRL2_REG, |
| 2366 | USB_CH_DET, 0x00); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2367 | /*Check link status*/ |
Marcus Cooper | 88efdb8 | 2012-08-30 14:12:53 +0200 | [diff] [blame] | 2368 | if (is_ab8500(di->parent)) |
| 2369 | ret = abx500_get_register_interruptible(di->dev, |
| 2370 | AB8500_USB, AB8500_USB_LINE_STAT_REG, |
| 2371 | &val); |
| 2372 | else |
| 2373 | ret = abx500_get_register_interruptible(di->dev, |
| 2374 | AB8500_USB, AB8500_USB_LINK1_STAT_REG, |
| 2375 | &val); |
| 2376 | |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2377 | dev_dbg(di->dev, "USB link status= 0x%02x\n", |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2378 | (val & link_status) >> USB_LINK_STATUS_SHIFT); |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 2379 | di->invalid_charger_detect_state = 2; |
| 2380 | } |
| 2381 | } else { |
| 2382 | di->invalid_charger_detect_state = 0; |
| 2383 | } |
| 2384 | |
| 2385 | if (!(detected_chargers & USB_PW_CONN)) { |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2386 | di->vbus_detected = false; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2387 | ab8500_charger_set_usb_connected(di, false); |
| 2388 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 2389 | return; |
| 2390 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2391 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2392 | dev_dbg(di->dev,"%s di->vbus_detected = true\n",__func__); |
| 2393 | di->vbus_detected = true; |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 2394 | ret = ab8500_charger_read_usb_type(di); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2395 | if (ret) { |
| 2396 | if (ret == -ENXIO) { |
| 2397 | /* No valid charger type detected */ |
| 2398 | ab8500_charger_set_usb_connected(di, false); |
| 2399 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2400 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2401 | return; |
| 2402 | } |
| 2403 | |
| 2404 | if (di->usb_device_is_unrecognised) { |
| 2405 | dev_dbg(di->dev, |
| 2406 | "Potential Legacy Charger device. " |
| 2407 | "Delay work for %d msec for USB enum " |
| 2408 | "to finish", |
| 2409 | WAIT_ACA_RID_ENUMERATION); |
| 2410 | queue_delayed_work(di->charger_wq, |
| 2411 | &di->attach_work, |
| 2412 | msecs_to_jiffies(WAIT_ACA_RID_ENUMERATION)); |
| 2413 | } else if (di->is_aca_rid == 1) { |
| 2414 | /* Only wait once */ |
| 2415 | di->is_aca_rid++; |
| 2416 | dev_dbg(di->dev, |
| 2417 | "%s Wait %d msec for USB enum to finish", |
| 2418 | __func__, WAIT_ACA_RID_ENUMERATION); |
| 2419 | queue_delayed_work(di->charger_wq, |
| 2420 | &di->attach_work, |
| 2421 | msecs_to_jiffies(WAIT_ACA_RID_ENUMERATION)); |
| 2422 | } else { |
| 2423 | queue_delayed_work(di->charger_wq, |
| 2424 | &di->attach_work, |
| 2425 | 0); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2426 | } |
| 2427 | } |
| 2428 | |
| 2429 | static void ab8500_charger_usb_state_changed_work(struct work_struct *work) |
| 2430 | { |
| 2431 | int ret; |
| 2432 | unsigned long flags; |
| 2433 | |
| 2434 | struct ab8500_charger *di = container_of(work, |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2435 | struct ab8500_charger, usb_state_changed_work.work); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2436 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2437 | if (!di->vbus_detected) { |
| 2438 | dev_dbg(di->dev, |
| 2439 | "%s !di->vbus_detected\n", |
| 2440 | __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2441 | return; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2442 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2443 | |
| 2444 | spin_lock_irqsave(&di->usb_state.usb_lock, flags); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2445 | di->usb_state.state = di->usb_state.state_tmp; |
| 2446 | di->usb_state.usb_current = di->usb_state.usb_current_tmp; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2447 | spin_unlock_irqrestore(&di->usb_state.usb_lock, flags); |
| 2448 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2449 | dev_dbg(di->dev, "%s USB state: 0x%02x mA: %d\n", |
| 2450 | __func__, di->usb_state.state, di->usb_state.usb_current); |
| 2451 | |
| 2452 | switch (di->usb_state.state) { |
| 2453 | case AB8500_BM_USB_STATE_RESET_HS: |
| 2454 | case AB8500_BM_USB_STATE_RESET_FS: |
| 2455 | case AB8500_BM_USB_STATE_SUSPEND: |
| 2456 | case AB8500_BM_USB_STATE_MAX: |
| 2457 | ab8500_charger_set_usb_connected(di, false); |
| 2458 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2459 | break; |
| 2460 | |
| 2461 | case AB8500_BM_USB_STATE_RESUME: |
| 2462 | /* |
| 2463 | * when suspend->resume there should be delay |
| 2464 | * of 1sec for enabling charging |
| 2465 | */ |
| 2466 | msleep(1000); |
| 2467 | /* Intentional fall through */ |
| 2468 | case AB8500_BM_USB_STATE_CONFIGURED: |
| 2469 | /* |
| 2470 | * USB is configured, enable charging with the charging |
| 2471 | * input current obtained from USB driver |
| 2472 | */ |
| 2473 | if (!ab8500_charger_get_usb_cur(di)) { |
| 2474 | /* Update maximum input current */ |
| 2475 | ret = ab8500_charger_set_vbus_in_curr(di, |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2476 | di->max_usb_in_curr.usb_type_max); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2477 | if (ret) |
| 2478 | return; |
| 2479 | |
| 2480 | ab8500_charger_set_usb_connected(di, true); |
| 2481 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2482 | } |
| 2483 | break; |
| 2484 | |
| 2485 | default: |
| 2486 | break; |
| 2487 | }; |
| 2488 | } |
| 2489 | |
| 2490 | /** |
| 2491 | * ab8500_charger_check_usbchargernotok_work() - check USB chg not ok status |
| 2492 | * @work: pointer to the work_struct structure |
| 2493 | * |
| 2494 | * Work queue function for checking the USB charger Not OK status |
| 2495 | */ |
| 2496 | static void ab8500_charger_check_usbchargernotok_work(struct work_struct *work) |
| 2497 | { |
| 2498 | int ret; |
| 2499 | u8 reg_value; |
| 2500 | bool prev_status; |
| 2501 | |
| 2502 | struct ab8500_charger *di = container_of(work, |
| 2503 | struct ab8500_charger, check_usbchgnotok_work.work); |
| 2504 | |
| 2505 | /* Check if the status bit for usbchargernotok is still active */ |
| 2506 | ret = abx500_get_register_interruptible(di->dev, |
| 2507 | AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value); |
| 2508 | if (ret < 0) { |
| 2509 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 2510 | return; |
| 2511 | } |
| 2512 | prev_status = di->flags.usbchargernotok; |
| 2513 | |
| 2514 | if (reg_value & VBUS_CH_NOK) { |
| 2515 | di->flags.usbchargernotok = true; |
| 2516 | /* Check again in 1sec */ |
| 2517 | queue_delayed_work(di->charger_wq, |
| 2518 | &di->check_usbchgnotok_work, HZ); |
| 2519 | } else { |
| 2520 | di->flags.usbchargernotok = false; |
| 2521 | di->flags.vbus_collapse = false; |
| 2522 | } |
| 2523 | |
| 2524 | if (prev_status != di->flags.usbchargernotok) |
| 2525 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2526 | } |
| 2527 | |
| 2528 | /** |
| 2529 | * ab8500_charger_check_main_thermal_prot_work() - check main thermal status |
| 2530 | * @work: pointer to the work_struct structure |
| 2531 | * |
| 2532 | * Work queue function for checking the Main thermal prot status |
| 2533 | */ |
| 2534 | static void ab8500_charger_check_main_thermal_prot_work( |
| 2535 | struct work_struct *work) |
| 2536 | { |
| 2537 | int ret; |
| 2538 | u8 reg_value; |
| 2539 | |
| 2540 | struct ab8500_charger *di = container_of(work, |
| 2541 | struct ab8500_charger, check_main_thermal_prot_work); |
| 2542 | |
| 2543 | /* Check if the status bit for main_thermal_prot is still active */ |
| 2544 | ret = abx500_get_register_interruptible(di->dev, |
| 2545 | AB8500_CHARGER, AB8500_CH_STATUS2_REG, ®_value); |
| 2546 | if (ret < 0) { |
| 2547 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 2548 | return; |
| 2549 | } |
| 2550 | if (reg_value & MAIN_CH_TH_PROT) |
| 2551 | di->flags.main_thermal_prot = true; |
| 2552 | else |
| 2553 | di->flags.main_thermal_prot = false; |
| 2554 | |
| 2555 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 2556 | } |
| 2557 | |
| 2558 | /** |
| 2559 | * ab8500_charger_check_usb_thermal_prot_work() - check usb thermal status |
| 2560 | * @work: pointer to the work_struct structure |
| 2561 | * |
| 2562 | * Work queue function for checking the USB thermal prot status |
| 2563 | */ |
| 2564 | static void ab8500_charger_check_usb_thermal_prot_work( |
| 2565 | struct work_struct *work) |
| 2566 | { |
| 2567 | int ret; |
| 2568 | u8 reg_value; |
| 2569 | |
| 2570 | struct ab8500_charger *di = container_of(work, |
| 2571 | struct ab8500_charger, check_usb_thermal_prot_work); |
| 2572 | |
| 2573 | /* Check if the status bit for usb_thermal_prot is still active */ |
| 2574 | ret = abx500_get_register_interruptible(di->dev, |
| 2575 | AB8500_CHARGER, AB8500_CH_USBCH_STAT2_REG, ®_value); |
| 2576 | if (ret < 0) { |
| 2577 | dev_err(di->dev, "%s ab8500 read failed\n", __func__); |
| 2578 | return; |
| 2579 | } |
| 2580 | if (reg_value & USB_CH_TH_PROT) |
| 2581 | di->flags.usb_thermal_prot = true; |
| 2582 | else |
| 2583 | di->flags.usb_thermal_prot = false; |
| 2584 | |
| 2585 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2586 | } |
| 2587 | |
| 2588 | /** |
| 2589 | * ab8500_charger_mainchunplugdet_handler() - main charger unplugged |
| 2590 | * @irq: interrupt number |
| 2591 | * @_di: pointer to the ab8500_charger structure |
| 2592 | * |
| 2593 | * Returns IRQ status(IRQ_HANDLED) |
| 2594 | */ |
| 2595 | static irqreturn_t ab8500_charger_mainchunplugdet_handler(int irq, void *_di) |
| 2596 | { |
| 2597 | struct ab8500_charger *di = _di; |
| 2598 | |
| 2599 | dev_dbg(di->dev, "Main charger unplugged\n"); |
| 2600 | queue_work(di->charger_wq, &di->ac_work); |
| 2601 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 2602 | cancel_delayed_work_sync(&di->ac_charger_attached_work); |
| 2603 | mutex_lock(&di->charger_attached_mutex); |
| 2604 | mutex_unlock(&di->charger_attached_mutex); |
| 2605 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2606 | return IRQ_HANDLED; |
| 2607 | } |
| 2608 | |
| 2609 | /** |
| 2610 | * ab8500_charger_mainchplugdet_handler() - main charger plugged |
| 2611 | * @irq: interrupt number |
| 2612 | * @_di: pointer to the ab8500_charger structure |
| 2613 | * |
| 2614 | * Returns IRQ status(IRQ_HANDLED) |
| 2615 | */ |
| 2616 | static irqreturn_t ab8500_charger_mainchplugdet_handler(int irq, void *_di) |
| 2617 | { |
| 2618 | struct ab8500_charger *di = _di; |
| 2619 | |
| 2620 | dev_dbg(di->dev, "Main charger plugged\n"); |
| 2621 | queue_work(di->charger_wq, &di->ac_work); |
| 2622 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 2623 | mutex_lock(&di->charger_attached_mutex); |
| 2624 | mutex_unlock(&di->charger_attached_mutex); |
| 2625 | queue_delayed_work(di->charger_wq, |
| 2626 | &di->ac_charger_attached_work, |
| 2627 | HZ); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2628 | return IRQ_HANDLED; |
| 2629 | } |
| 2630 | |
| 2631 | /** |
| 2632 | * ab8500_charger_mainextchnotok_handler() - main charger not ok |
| 2633 | * @irq: interrupt number |
| 2634 | * @_di: pointer to the ab8500_charger structure |
| 2635 | * |
| 2636 | * Returns IRQ status(IRQ_HANDLED) |
| 2637 | */ |
| 2638 | static irqreturn_t ab8500_charger_mainextchnotok_handler(int irq, void *_di) |
| 2639 | { |
| 2640 | struct ab8500_charger *di = _di; |
| 2641 | |
| 2642 | dev_dbg(di->dev, "Main charger not ok\n"); |
| 2643 | di->flags.mainextchnotok = true; |
| 2644 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 2645 | |
| 2646 | /* Schedule a new HW failure check */ |
| 2647 | queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0); |
| 2648 | |
| 2649 | return IRQ_HANDLED; |
| 2650 | } |
| 2651 | |
| 2652 | /** |
| 2653 | * ab8500_charger_mainchthprotr_handler() - Die temp is above main charger |
| 2654 | * thermal protection threshold |
| 2655 | * @irq: interrupt number |
| 2656 | * @_di: pointer to the ab8500_charger structure |
| 2657 | * |
| 2658 | * Returns IRQ status(IRQ_HANDLED) |
| 2659 | */ |
| 2660 | static irqreturn_t ab8500_charger_mainchthprotr_handler(int irq, void *_di) |
| 2661 | { |
| 2662 | struct ab8500_charger *di = _di; |
| 2663 | |
| 2664 | dev_dbg(di->dev, |
| 2665 | "Die temp above Main charger thermal protection threshold\n"); |
| 2666 | queue_work(di->charger_wq, &di->check_main_thermal_prot_work); |
| 2667 | |
| 2668 | return IRQ_HANDLED; |
| 2669 | } |
| 2670 | |
| 2671 | /** |
| 2672 | * ab8500_charger_mainchthprotf_handler() - Die temp is below main charger |
| 2673 | * thermal protection threshold |
| 2674 | * @irq: interrupt number |
| 2675 | * @_di: pointer to the ab8500_charger structure |
| 2676 | * |
| 2677 | * Returns IRQ status(IRQ_HANDLED) |
| 2678 | */ |
| 2679 | static irqreturn_t ab8500_charger_mainchthprotf_handler(int irq, void *_di) |
| 2680 | { |
| 2681 | struct ab8500_charger *di = _di; |
| 2682 | |
| 2683 | dev_dbg(di->dev, |
| 2684 | "Die temp ok for Main charger thermal protection threshold\n"); |
| 2685 | queue_work(di->charger_wq, &di->check_main_thermal_prot_work); |
| 2686 | |
| 2687 | return IRQ_HANDLED; |
| 2688 | } |
| 2689 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2690 | static void ab8500_charger_vbus_drop_end_work(struct work_struct *work) |
| 2691 | { |
| 2692 | struct ab8500_charger *di = container_of(work, |
| 2693 | struct ab8500_charger, vbus_drop_end_work.work); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2694 | int ret, curr; |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2695 | u8 reg_value; |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2696 | |
| 2697 | di->flags.vbus_drop_end = false; |
| 2698 | |
| 2699 | /* Reset the drop counter */ |
| 2700 | abx500_set_register_interruptible(di->dev, |
| 2701 | AB8500_CHARGER, AB8500_CHARGER_CTRL, 0x01); |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2702 | |
| 2703 | if (is_ab8540(di->parent)) |
| 2704 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 2705 | AB8540_CH_USBCH_STAT3_REG, ®_value); |
| 2706 | else |
| 2707 | ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER, |
| 2708 | AB8500_CH_USBCH_STAT2_REG, ®_value); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2709 | if (ret < 0) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2710 | dev_err(di->dev, "%s read failed\n", __func__); |
| 2711 | return; |
| 2712 | } |
| 2713 | |
| 2714 | if (is_ab8540(di->parent)) |
| 2715 | curr = di->bm->chg_input_curr[ |
| 2716 | reg_value & AB8540_AUTO_VBUS_IN_CURR_MASK]; |
| 2717 | else |
| 2718 | curr = di->bm->chg_input_curr[ |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2719 | reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT]; |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 2720 | |
| 2721 | if (di->max_usb_in_curr.calculated_max != curr) { |
| 2722 | /* USB source is collapsing */ |
| 2723 | di->max_usb_in_curr.calculated_max = curr; |
| 2724 | dev_dbg(di->dev, |
| 2725 | "VBUS input current limiting to %d mA\n", |
| 2726 | di->max_usb_in_curr.calculated_max); |
| 2727 | } else { |
| 2728 | /* |
| 2729 | * USB source can not give more than this amount. |
| 2730 | * Taking more will collapse the source. |
| 2731 | */ |
| 2732 | di->max_usb_in_curr.set_max = |
| 2733 | di->max_usb_in_curr.calculated_max; |
| 2734 | dev_dbg(di->dev, |
| 2735 | "VBUS input current limited to %d mA\n", |
| 2736 | di->max_usb_in_curr.set_max); |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2737 | } |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2738 | |
| 2739 | if (di->usb.charger_connected) |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2740 | ab8500_charger_set_vbus_in_curr(di, |
| 2741 | di->max_usb_in_curr.usb_type_max); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2742 | } |
| 2743 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2744 | /** |
| 2745 | * ab8500_charger_vbusdetf_handler() - VBUS falling detected |
| 2746 | * @irq: interrupt number |
| 2747 | * @_di: pointer to the ab8500_charger structure |
| 2748 | * |
| 2749 | * Returns IRQ status(IRQ_HANDLED) |
| 2750 | */ |
| 2751 | static irqreturn_t ab8500_charger_vbusdetf_handler(int irq, void *_di) |
| 2752 | { |
| 2753 | struct ab8500_charger *di = _di; |
| 2754 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2755 | di->vbus_detected = false; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2756 | dev_dbg(di->dev, "VBUS falling detected\n"); |
| 2757 | queue_work(di->charger_wq, &di->detect_usb_type_work); |
| 2758 | |
| 2759 | return IRQ_HANDLED; |
| 2760 | } |
| 2761 | |
| 2762 | /** |
| 2763 | * ab8500_charger_vbusdetr_handler() - VBUS rising detected |
| 2764 | * @irq: interrupt number |
| 2765 | * @_di: pointer to the ab8500_charger structure |
| 2766 | * |
| 2767 | * Returns IRQ status(IRQ_HANDLED) |
| 2768 | */ |
| 2769 | static irqreturn_t ab8500_charger_vbusdetr_handler(int irq, void *_di) |
| 2770 | { |
| 2771 | struct ab8500_charger *di = _di; |
| 2772 | |
| 2773 | di->vbus_detected = true; |
| 2774 | dev_dbg(di->dev, "VBUS rising detected\n"); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2775 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2776 | queue_work(di->charger_wq, &di->detect_usb_type_work); |
| 2777 | |
| 2778 | return IRQ_HANDLED; |
| 2779 | } |
| 2780 | |
| 2781 | /** |
| 2782 | * ab8500_charger_usblinkstatus_handler() - USB link status has changed |
| 2783 | * @irq: interrupt number |
| 2784 | * @_di: pointer to the ab8500_charger structure |
| 2785 | * |
| 2786 | * Returns IRQ status(IRQ_HANDLED) |
| 2787 | */ |
| 2788 | static irqreturn_t ab8500_charger_usblinkstatus_handler(int irq, void *_di) |
| 2789 | { |
| 2790 | struct ab8500_charger *di = _di; |
| 2791 | |
| 2792 | dev_dbg(di->dev, "USB link status changed\n"); |
| 2793 | |
| 2794 | queue_work(di->charger_wq, &di->usb_link_status_work); |
| 2795 | |
| 2796 | return IRQ_HANDLED; |
| 2797 | } |
| 2798 | |
| 2799 | /** |
| 2800 | * ab8500_charger_usbchthprotr_handler() - Die temp is above usb charger |
| 2801 | * thermal protection threshold |
| 2802 | * @irq: interrupt number |
| 2803 | * @_di: pointer to the ab8500_charger structure |
| 2804 | * |
| 2805 | * Returns IRQ status(IRQ_HANDLED) |
| 2806 | */ |
| 2807 | static irqreturn_t ab8500_charger_usbchthprotr_handler(int irq, void *_di) |
| 2808 | { |
| 2809 | struct ab8500_charger *di = _di; |
| 2810 | |
| 2811 | dev_dbg(di->dev, |
| 2812 | "Die temp above USB charger thermal protection threshold\n"); |
| 2813 | queue_work(di->charger_wq, &di->check_usb_thermal_prot_work); |
| 2814 | |
| 2815 | return IRQ_HANDLED; |
| 2816 | } |
| 2817 | |
| 2818 | /** |
| 2819 | * ab8500_charger_usbchthprotf_handler() - Die temp is below usb charger |
| 2820 | * thermal protection threshold |
| 2821 | * @irq: interrupt number |
| 2822 | * @_di: pointer to the ab8500_charger structure |
| 2823 | * |
| 2824 | * Returns IRQ status(IRQ_HANDLED) |
| 2825 | */ |
| 2826 | static irqreturn_t ab8500_charger_usbchthprotf_handler(int irq, void *_di) |
| 2827 | { |
| 2828 | struct ab8500_charger *di = _di; |
| 2829 | |
| 2830 | dev_dbg(di->dev, |
| 2831 | "Die temp ok for USB charger thermal protection threshold\n"); |
| 2832 | queue_work(di->charger_wq, &di->check_usb_thermal_prot_work); |
| 2833 | |
| 2834 | return IRQ_HANDLED; |
| 2835 | } |
| 2836 | |
| 2837 | /** |
| 2838 | * ab8500_charger_usbchargernotokr_handler() - USB charger not ok detected |
| 2839 | * @irq: interrupt number |
| 2840 | * @_di: pointer to the ab8500_charger structure |
| 2841 | * |
| 2842 | * Returns IRQ status(IRQ_HANDLED) |
| 2843 | */ |
| 2844 | static irqreturn_t ab8500_charger_usbchargernotokr_handler(int irq, void *_di) |
| 2845 | { |
| 2846 | struct ab8500_charger *di = _di; |
| 2847 | |
| 2848 | dev_dbg(di->dev, "Not allowed USB charger detected\n"); |
| 2849 | queue_delayed_work(di->charger_wq, &di->check_usbchgnotok_work, 0); |
| 2850 | |
| 2851 | return IRQ_HANDLED; |
| 2852 | } |
| 2853 | |
| 2854 | /** |
| 2855 | * ab8500_charger_chwdexp_handler() - Charger watchdog expired |
| 2856 | * @irq: interrupt number |
| 2857 | * @_di: pointer to the ab8500_charger structure |
| 2858 | * |
| 2859 | * Returns IRQ status(IRQ_HANDLED) |
| 2860 | */ |
| 2861 | static irqreturn_t ab8500_charger_chwdexp_handler(int irq, void *_di) |
| 2862 | { |
| 2863 | struct ab8500_charger *di = _di; |
| 2864 | |
| 2865 | dev_dbg(di->dev, "Charger watchdog expired\n"); |
| 2866 | |
| 2867 | /* |
| 2868 | * The charger that was online when the watchdog expired |
| 2869 | * needs to be restarted for charging to start again |
| 2870 | */ |
| 2871 | if (di->ac.charger_online) { |
| 2872 | di->ac.wd_expired = true; |
| 2873 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 2874 | } |
| 2875 | if (di->usb.charger_online) { |
| 2876 | di->usb.wd_expired = true; |
| 2877 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2878 | } |
| 2879 | |
| 2880 | return IRQ_HANDLED; |
| 2881 | } |
| 2882 | |
| 2883 | /** |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2884 | * ab8500_charger_vbuschdropend_handler() - VBUS drop removed |
| 2885 | * @irq: interrupt number |
| 2886 | * @_di: pointer to the ab8500_charger structure |
| 2887 | * |
| 2888 | * Returns IRQ status(IRQ_HANDLED) |
| 2889 | */ |
| 2890 | static irqreturn_t ab8500_charger_vbuschdropend_handler(int irq, void *_di) |
| 2891 | { |
| 2892 | struct ab8500_charger *di = _di; |
| 2893 | |
| 2894 | dev_dbg(di->dev, "VBUS charger drop ended\n"); |
| 2895 | di->flags.vbus_drop_end = true; |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2896 | |
| 2897 | /* |
| 2898 | * VBUS might have dropped due to bad connection. |
| 2899 | * Schedule a new input limit set to the value SW requests. |
| 2900 | */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2901 | queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work, |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 2902 | round_jiffies(VBUS_IN_CURR_LIM_RETRY_SET_TIME * HZ)); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 2903 | |
| 2904 | return IRQ_HANDLED; |
| 2905 | } |
| 2906 | |
| 2907 | /** |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2908 | * ab8500_charger_vbusovv_handler() - VBUS overvoltage detected |
| 2909 | * @irq: interrupt number |
| 2910 | * @_di: pointer to the ab8500_charger structure |
| 2911 | * |
| 2912 | * Returns IRQ status(IRQ_HANDLED) |
| 2913 | */ |
| 2914 | static irqreturn_t ab8500_charger_vbusovv_handler(int irq, void *_di) |
| 2915 | { |
| 2916 | struct ab8500_charger *di = _di; |
| 2917 | |
| 2918 | dev_dbg(di->dev, "VBUS overvoltage detected\n"); |
| 2919 | di->flags.vbus_ovv = true; |
| 2920 | ab8500_power_supply_changed(di, &di->usb_chg.psy); |
| 2921 | |
| 2922 | /* Schedule a new HW failure check */ |
| 2923 | queue_delayed_work(di->charger_wq, &di->check_hw_failure_work, 0); |
| 2924 | |
| 2925 | return IRQ_HANDLED; |
| 2926 | } |
| 2927 | |
| 2928 | /** |
| 2929 | * ab8500_charger_ac_get_property() - get the ac/mains properties |
| 2930 | * @psy: pointer to the power_supply structure |
| 2931 | * @psp: pointer to the power_supply_property structure |
| 2932 | * @val: pointer to the power_supply_propval union |
| 2933 | * |
| 2934 | * This function gets called when an application tries to get the ac/mains |
| 2935 | * properties by reading the sysfs files. |
| 2936 | * AC/Mains properties are online, present and voltage. |
| 2937 | * online: ac/mains charging is in progress or not |
| 2938 | * present: presence of the ac/mains |
| 2939 | * voltage: AC/Mains voltage |
| 2940 | * Returns error code in case of failure else 0(on success) |
| 2941 | */ |
| 2942 | static int ab8500_charger_ac_get_property(struct power_supply *psy, |
| 2943 | enum power_supply_property psp, |
| 2944 | union power_supply_propval *val) |
| 2945 | { |
| 2946 | struct ab8500_charger *di; |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 2947 | int ret; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2948 | |
| 2949 | di = to_ab8500_charger_ac_device_info(psy_to_ux500_charger(psy)); |
| 2950 | |
| 2951 | switch (psp) { |
| 2952 | case POWER_SUPPLY_PROP_HEALTH: |
| 2953 | if (di->flags.mainextchnotok) |
| 2954 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; |
| 2955 | else if (di->ac.wd_expired || di->usb.wd_expired) |
| 2956 | val->intval = POWER_SUPPLY_HEALTH_DEAD; |
| 2957 | else if (di->flags.main_thermal_prot) |
| 2958 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; |
| 2959 | else |
| 2960 | val->intval = POWER_SUPPLY_HEALTH_GOOD; |
| 2961 | break; |
| 2962 | case POWER_SUPPLY_PROP_ONLINE: |
| 2963 | val->intval = di->ac.charger_online; |
| 2964 | break; |
| 2965 | case POWER_SUPPLY_PROP_PRESENT: |
| 2966 | val->intval = di->ac.charger_connected; |
| 2967 | break; |
| 2968 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 2969 | ret = ab8500_charger_get_ac_voltage(di); |
| 2970 | if (ret >= 0) |
| 2971 | di->ac.charger_voltage = ret; |
| 2972 | /* On error, use previous value */ |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2973 | val->intval = di->ac.charger_voltage * 1000; |
| 2974 | break; |
| 2975 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
| 2976 | /* |
| 2977 | * This property is used to indicate when CV mode is entered |
| 2978 | * for the AC charger |
| 2979 | */ |
| 2980 | di->ac.cv_active = ab8500_charger_ac_cv(di); |
| 2981 | val->intval = di->ac.cv_active; |
| 2982 | break; |
| 2983 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 2984 | ret = ab8500_charger_get_ac_current(di); |
| 2985 | if (ret >= 0) |
| 2986 | di->ac.charger_current = ret; |
| 2987 | val->intval = di->ac.charger_current * 1000; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 2988 | break; |
| 2989 | default: |
| 2990 | return -EINVAL; |
| 2991 | } |
| 2992 | return 0; |
| 2993 | } |
| 2994 | |
| 2995 | /** |
| 2996 | * ab8500_charger_usb_get_property() - get the usb properties |
| 2997 | * @psy: pointer to the power_supply structure |
| 2998 | * @psp: pointer to the power_supply_property structure |
| 2999 | * @val: pointer to the power_supply_propval union |
| 3000 | * |
| 3001 | * This function gets called when an application tries to get the usb |
| 3002 | * properties by reading the sysfs files. |
| 3003 | * USB properties are online, present and voltage. |
| 3004 | * online: usb charging is in progress or not |
| 3005 | * present: presence of the usb |
| 3006 | * voltage: vbus voltage |
| 3007 | * Returns error code in case of failure else 0(on success) |
| 3008 | */ |
| 3009 | static int ab8500_charger_usb_get_property(struct power_supply *psy, |
| 3010 | enum power_supply_property psp, |
| 3011 | union power_supply_propval *val) |
| 3012 | { |
| 3013 | struct ab8500_charger *di; |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 3014 | int ret; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3015 | |
| 3016 | di = to_ab8500_charger_usb_device_info(psy_to_ux500_charger(psy)); |
| 3017 | |
| 3018 | switch (psp) { |
| 3019 | case POWER_SUPPLY_PROP_HEALTH: |
| 3020 | if (di->flags.usbchargernotok) |
| 3021 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; |
| 3022 | else if (di->ac.wd_expired || di->usb.wd_expired) |
| 3023 | val->intval = POWER_SUPPLY_HEALTH_DEAD; |
| 3024 | else if (di->flags.usb_thermal_prot) |
| 3025 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; |
| 3026 | else if (di->flags.vbus_ovv) |
| 3027 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; |
| 3028 | else |
| 3029 | val->intval = POWER_SUPPLY_HEALTH_GOOD; |
| 3030 | break; |
| 3031 | case POWER_SUPPLY_PROP_ONLINE: |
| 3032 | val->intval = di->usb.charger_online; |
| 3033 | break; |
| 3034 | case POWER_SUPPLY_PROP_PRESENT: |
| 3035 | val->intval = di->usb.charger_connected; |
| 3036 | break; |
| 3037 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 3038 | ret = ab8500_charger_get_vbus_voltage(di); |
| 3039 | if (ret >= 0) |
| 3040 | di->usb.charger_voltage = ret; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3041 | val->intval = di->usb.charger_voltage * 1000; |
| 3042 | break; |
| 3043 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
| 3044 | /* |
| 3045 | * This property is used to indicate when CV mode is entered |
| 3046 | * for the USB charger |
| 3047 | */ |
| 3048 | di->usb.cv_active = ab8500_charger_usb_cv(di); |
| 3049 | val->intval = di->usb.cv_active; |
| 3050 | break; |
| 3051 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
Jonas Aaberg | a864c5a | 2013-01-11 13:12:53 +0000 | [diff] [blame] | 3052 | ret = ab8500_charger_get_usb_current(di); |
| 3053 | if (ret >= 0) |
| 3054 | di->usb.charger_current = ret; |
| 3055 | val->intval = di->usb.charger_current * 1000; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3056 | break; |
| 3057 | case POWER_SUPPLY_PROP_CURRENT_AVG: |
| 3058 | /* |
| 3059 | * This property is used to indicate when VBUS has collapsed |
| 3060 | * due to too high output current from the USB charger |
| 3061 | */ |
| 3062 | if (di->flags.vbus_collapse) |
| 3063 | val->intval = 1; |
| 3064 | else |
| 3065 | val->intval = 0; |
| 3066 | break; |
| 3067 | default: |
| 3068 | return -EINVAL; |
| 3069 | } |
| 3070 | return 0; |
| 3071 | } |
| 3072 | |
| 3073 | /** |
| 3074 | * ab8500_charger_init_hw_registers() - Set up charger related registers |
| 3075 | * @di: pointer to the ab8500_charger structure |
| 3076 | * |
| 3077 | * Set up charger OVV, watchdog and maximum voltage registers as well as |
| 3078 | * charging of the backup battery |
| 3079 | */ |
| 3080 | static int ab8500_charger_init_hw_registers(struct ab8500_charger *di) |
| 3081 | { |
| 3082 | int ret = 0; |
Yang QU | 0f4aa40 | 2012-06-26 19:25:52 +0800 | [diff] [blame] | 3083 | u8 bup_vch_range = 0, vbup33_vrtcn = 0; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3084 | |
| 3085 | /* Setup maximum charger current and voltage for ABB cut2.0 */ |
| 3086 | if (!is_ab8500_1p1_or_earlier(di->parent)) { |
| 3087 | ret = abx500_set_register_interruptible(di->dev, |
| 3088 | AB8500_CHARGER, |
| 3089 | AB8500_CH_VOLT_LVL_MAX_REG, CH_VOL_LVL_4P6); |
| 3090 | if (ret) { |
| 3091 | dev_err(di->dev, |
| 3092 | "failed to set CH_VOLT_LVL_MAX_REG\n"); |
| 3093 | goto out; |
| 3094 | } |
| 3095 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3096 | if (is_ab8540(di->parent)) |
| 3097 | ret = abx500_set_register_interruptible(di->dev, |
| 3098 | AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG, |
| 3099 | CH_OP_CUR_LVL_2P); |
| 3100 | else |
| 3101 | ret = abx500_set_register_interruptible(di->dev, |
| 3102 | AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG, |
| 3103 | CH_OP_CUR_LVL_1P6); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3104 | if (ret) { |
| 3105 | dev_err(di->dev, |
| 3106 | "failed to set CH_OPT_CRNTLVL_MAX_REG\n"); |
| 3107 | goto out; |
| 3108 | } |
| 3109 | } |
| 3110 | |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3111 | if (is_ab9540_2p0(di->parent) || is_ab9540_3p0(di->parent) |
| 3112 | || is_ab8505_2p0(di->parent) || is_ab8540(di->parent)) |
Jonas Aaberg | 0ed5107 | 2012-05-11 12:42:25 +0200 | [diff] [blame] | 3113 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 3114 | AB8500_CHARGER, |
| 3115 | AB8500_USBCH_CTRL2_REG, |
| 3116 | VBUS_AUTO_IN_CURR_LIM_ENA, |
| 3117 | VBUS_AUTO_IN_CURR_LIM_ENA); |
| 3118 | else |
| 3119 | /* |
| 3120 | * VBUS OVV set to 6.3V and enable automatic current limitation |
| 3121 | */ |
| 3122 | ret = abx500_set_register_interruptible(di->dev, |
| 3123 | AB8500_CHARGER, |
| 3124 | AB8500_USBCH_CTRL2_REG, |
| 3125 | VBUS_OVV_SELECT_6P3V | VBUS_AUTO_IN_CURR_LIM_ENA); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3126 | if (ret) { |
Jonas Aaberg | 0ed5107 | 2012-05-11 12:42:25 +0200 | [diff] [blame] | 3127 | dev_err(di->dev, |
| 3128 | "failed to set automatic current limitation\n"); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3129 | goto out; |
| 3130 | } |
| 3131 | |
| 3132 | /* Enable main watchdog in OTP */ |
| 3133 | ret = abx500_set_register_interruptible(di->dev, |
| 3134 | AB8500_OTP_EMUL, AB8500_OTP_CONF_15, OTP_ENABLE_WD); |
| 3135 | if (ret) { |
| 3136 | dev_err(di->dev, "failed to enable main WD in OTP\n"); |
| 3137 | goto out; |
| 3138 | } |
| 3139 | |
| 3140 | /* Enable main watchdog */ |
| 3141 | ret = abx500_set_register_interruptible(di->dev, |
| 3142 | AB8500_SYS_CTRL2_BLOCK, |
| 3143 | AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_ENA); |
| 3144 | if (ret) { |
| 3145 | dev_err(di->dev, "faile to enable main watchdog\n"); |
| 3146 | goto out; |
| 3147 | } |
| 3148 | |
| 3149 | /* |
| 3150 | * Due to internal synchronisation, Enable and Kick watchdog bits |
| 3151 | * cannot be enabled in a single write. |
| 3152 | * A minimum delay of 2*32 kHz period (62.5µs) must be inserted |
| 3153 | * between writing Enable then Kick bits. |
| 3154 | */ |
| 3155 | udelay(63); |
| 3156 | |
| 3157 | /* Kick main watchdog */ |
| 3158 | ret = abx500_set_register_interruptible(di->dev, |
| 3159 | AB8500_SYS_CTRL2_BLOCK, |
| 3160 | AB8500_MAIN_WDOG_CTRL_REG, |
| 3161 | (MAIN_WDOG_ENA | MAIN_WDOG_KICK)); |
| 3162 | if (ret) { |
| 3163 | dev_err(di->dev, "failed to kick main watchdog\n"); |
| 3164 | goto out; |
| 3165 | } |
| 3166 | |
| 3167 | /* Disable main watchdog */ |
| 3168 | ret = abx500_set_register_interruptible(di->dev, |
| 3169 | AB8500_SYS_CTRL2_BLOCK, |
| 3170 | AB8500_MAIN_WDOG_CTRL_REG, MAIN_WDOG_DIS); |
| 3171 | if (ret) { |
| 3172 | dev_err(di->dev, "failed to disable main watchdog\n"); |
| 3173 | goto out; |
| 3174 | } |
| 3175 | |
| 3176 | /* Set watchdog timeout */ |
| 3177 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 3178 | AB8500_CH_WD_TIMER_REG, WD_TIMER); |
| 3179 | if (ret) { |
| 3180 | dev_err(di->dev, "failed to set charger watchdog timeout\n"); |
| 3181 | goto out; |
| 3182 | } |
| 3183 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3184 | /* Set charger watchdog timeout */ |
| 3185 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 3186 | AB8500_CH_WD_TIMER_REG, WD_TIMER); |
| 3187 | if (ret) { |
| 3188 | dev_err(di->dev, "failed to set charger watchdog timeout\n"); |
| 3189 | goto out; |
| 3190 | } |
| 3191 | |
| 3192 | ret = ab8500_charger_led_en(di, false); |
| 3193 | if (ret < 0) { |
| 3194 | dev_err(di->dev, "failed to disable LED\n"); |
| 3195 | goto out; |
| 3196 | } |
| 3197 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3198 | /* Backup battery voltage and current */ |
Yang QU | 0f4aa40 | 2012-06-26 19:25:52 +0800 | [diff] [blame] | 3199 | if (di->bm->bkup_bat_v > BUP_VCH_SEL_3P1V) |
| 3200 | bup_vch_range = BUP_VCH_RANGE; |
| 3201 | if (di->bm->bkup_bat_v == BUP_VCH_SEL_3P3V) |
| 3202 | vbup33_vrtcn = VBUP33_VRTCN; |
| 3203 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3204 | ret = abx500_set_register_interruptible(di->dev, |
| 3205 | AB8500_RTC, |
| 3206 | AB8500_RTC_BACKUP_CHG_REG, |
Yang QU | 0f4aa40 | 2012-06-26 19:25:52 +0800 | [diff] [blame] | 3207 | (di->bm->bkup_bat_v & 0x3) | di->bm->bkup_bat_i); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3208 | if (ret) { |
| 3209 | dev_err(di->dev, "failed to setup backup battery charging\n"); |
| 3210 | goto out; |
| 3211 | } |
Yang QU | 0f4aa40 | 2012-06-26 19:25:52 +0800 | [diff] [blame] | 3212 | if (is_ab8540(di->parent)) { |
| 3213 | ret = abx500_set_register_interruptible(di->dev, |
| 3214 | AB8500_RTC, |
| 3215 | AB8500_RTC_CTRL1_REG, |
| 3216 | bup_vch_range | vbup33_vrtcn); |
| 3217 | if (ret) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3218 | dev_err(di->dev, |
| 3219 | "failed to setup backup battery charging\n"); |
Yang QU | 0f4aa40 | 2012-06-26 19:25:52 +0800 | [diff] [blame] | 3220 | goto out; |
| 3221 | } |
| 3222 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3223 | |
| 3224 | /* Enable backup battery charging */ |
| 3225 | abx500_mask_and_set_register_interruptible(di->dev, |
| 3226 | AB8500_RTC, AB8500_RTC_CTRL_REG, |
| 3227 | RTC_BUP_CH_ENA, RTC_BUP_CH_ENA); |
| 3228 | if (ret < 0) |
| 3229 | dev_err(di->dev, "%s mask and set failed\n", __func__); |
| 3230 | |
Lee Jones | db43e6c | 2013-02-14 12:39:15 +0000 | [diff] [blame] | 3231 | if (is_ab8540(di->parent)) { |
| 3232 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 3233 | AB8500_CHARGER, AB8540_USB_PP_MODE_REG, |
| 3234 | BUS_VSYS_VOL_SELECT_MASK, BUS_VSYS_VOL_SELECT_3P6V); |
| 3235 | if (ret) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3236 | dev_err(di->dev, |
| 3237 | "failed to setup usb power path vsys voltage\n"); |
Lee Jones | db43e6c | 2013-02-14 12:39:15 +0000 | [diff] [blame] | 3238 | goto out; |
| 3239 | } |
| 3240 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 3241 | AB8500_CHARGER, AB8540_USB_PP_CHR_REG, |
| 3242 | BUS_PP_PRECHG_CURRENT_MASK, 0); |
| 3243 | if (ret) { |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3244 | dev_err(di->dev, |
| 3245 | "failed to setup usb power path prechage current\n"); |
Lee Jones | db43e6c | 2013-02-14 12:39:15 +0000 | [diff] [blame] | 3246 | goto out; |
| 3247 | } |
| 3248 | } |
| 3249 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3250 | out: |
| 3251 | return ret; |
| 3252 | } |
| 3253 | |
| 3254 | /* |
| 3255 | * ab8500 charger driver interrupts and their respective isr |
| 3256 | */ |
| 3257 | static struct ab8500_charger_interrupts ab8500_charger_irq[] = { |
| 3258 | {"MAIN_CH_UNPLUG_DET", ab8500_charger_mainchunplugdet_handler}, |
| 3259 | {"MAIN_CHARGE_PLUG_DET", ab8500_charger_mainchplugdet_handler}, |
| 3260 | {"MAIN_EXT_CH_NOT_OK", ab8500_charger_mainextchnotok_handler}, |
| 3261 | {"MAIN_CH_TH_PROT_R", ab8500_charger_mainchthprotr_handler}, |
| 3262 | {"MAIN_CH_TH_PROT_F", ab8500_charger_mainchthprotf_handler}, |
| 3263 | {"VBUS_DET_F", ab8500_charger_vbusdetf_handler}, |
| 3264 | {"VBUS_DET_R", ab8500_charger_vbusdetr_handler}, |
| 3265 | {"USB_LINK_STATUS", ab8500_charger_usblinkstatus_handler}, |
| 3266 | {"USB_CH_TH_PROT_R", ab8500_charger_usbchthprotr_handler}, |
| 3267 | {"USB_CH_TH_PROT_F", ab8500_charger_usbchthprotf_handler}, |
| 3268 | {"USB_CHARGER_NOT_OKR", ab8500_charger_usbchargernotokr_handler}, |
| 3269 | {"VBUS_OVV", ab8500_charger_vbusovv_handler}, |
| 3270 | {"CH_WD_EXP", ab8500_charger_chwdexp_handler}, |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3271 | {"VBUS_CH_DROP_END", ab8500_charger_vbuschdropend_handler}, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3272 | }; |
| 3273 | |
| 3274 | static int ab8500_charger_usb_notifier_call(struct notifier_block *nb, |
| 3275 | unsigned long event, void *power) |
| 3276 | { |
| 3277 | struct ab8500_charger *di = |
| 3278 | container_of(nb, struct ab8500_charger, nb); |
| 3279 | enum ab8500_usb_state bm_usb_state; |
| 3280 | unsigned mA = *((unsigned *)power); |
| 3281 | |
Lee Jones | c9ade0f | 2013-01-21 11:22:56 +0000 | [diff] [blame] | 3282 | if (!di) |
| 3283 | return NOTIFY_DONE; |
| 3284 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3285 | if (event != USB_EVENT_VBUS) { |
| 3286 | dev_dbg(di->dev, "not a standard host, returning\n"); |
| 3287 | return NOTIFY_DONE; |
| 3288 | } |
| 3289 | |
| 3290 | /* TODO: State is fabricate here. See if charger really needs USB |
| 3291 | * state or if mA is enough |
| 3292 | */ |
| 3293 | if ((di->usb_state.usb_current == 2) && (mA > 2)) |
| 3294 | bm_usb_state = AB8500_BM_USB_STATE_RESUME; |
| 3295 | else if (mA == 0) |
| 3296 | bm_usb_state = AB8500_BM_USB_STATE_RESET_HS; |
| 3297 | else if (mA == 2) |
| 3298 | bm_usb_state = AB8500_BM_USB_STATE_SUSPEND; |
| 3299 | else if (mA >= 8) /* 8, 100, 500 */ |
| 3300 | bm_usb_state = AB8500_BM_USB_STATE_CONFIGURED; |
| 3301 | else /* Should never occur */ |
| 3302 | bm_usb_state = AB8500_BM_USB_STATE_RESET_FS; |
| 3303 | |
| 3304 | dev_dbg(di->dev, "%s usb_state: 0x%02x mA: %d\n", |
| 3305 | __func__, bm_usb_state, mA); |
| 3306 | |
| 3307 | spin_lock(&di->usb_state.usb_lock); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3308 | di->usb_state.state_tmp = bm_usb_state; |
| 3309 | di->usb_state.usb_current_tmp = mA; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3310 | spin_unlock(&di->usb_state.usb_lock); |
| 3311 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3312 | /* |
| 3313 | * wait for some time until you get updates from the usb stack |
| 3314 | * and negotiations are completed |
| 3315 | */ |
| 3316 | queue_delayed_work(di->charger_wq, &di->usb_state_changed_work, HZ/2); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3317 | |
| 3318 | return NOTIFY_OK; |
| 3319 | } |
| 3320 | |
| 3321 | #if defined(CONFIG_PM) |
| 3322 | static int ab8500_charger_resume(struct platform_device *pdev) |
| 3323 | { |
| 3324 | int ret; |
| 3325 | struct ab8500_charger *di = platform_get_drvdata(pdev); |
| 3326 | |
| 3327 | /* |
| 3328 | * For ABB revision 1.0 and 1.1 there is a bug in the watchdog |
| 3329 | * logic. That means we have to continously kick the charger |
| 3330 | * watchdog even when no charger is connected. This is only |
| 3331 | * valid once the AC charger has been enabled. This is |
| 3332 | * a bug that is not handled by the algorithm and the |
| 3333 | * watchdog have to be kicked by the charger driver |
| 3334 | * when the AC charger is disabled |
| 3335 | */ |
| 3336 | if (di->ac_conn && is_ab8500_1p1_or_earlier(di->parent)) { |
| 3337 | ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER, |
| 3338 | AB8500_CHARG_WD_CTRL, CHARG_WD_KICK); |
| 3339 | if (ret) |
| 3340 | dev_err(di->dev, "Failed to kick WD!\n"); |
| 3341 | |
| 3342 | /* If not already pending start a new timer */ |
| 3343 | if (!delayed_work_pending( |
| 3344 | &di->kick_wd_work)) { |
| 3345 | queue_delayed_work(di->charger_wq, &di->kick_wd_work, |
| 3346 | round_jiffies(WD_KICK_INTERVAL)); |
| 3347 | } |
| 3348 | } |
| 3349 | |
| 3350 | /* If we still have a HW failure, schedule a new check */ |
| 3351 | if (di->flags.mainextchnotok || di->flags.vbus_ovv) { |
| 3352 | queue_delayed_work(di->charger_wq, |
| 3353 | &di->check_hw_failure_work, 0); |
| 3354 | } |
| 3355 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3356 | if (di->flags.vbus_drop_end) |
| 3357 | queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work, 0); |
| 3358 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3359 | return 0; |
| 3360 | } |
| 3361 | |
| 3362 | static int ab8500_charger_suspend(struct platform_device *pdev, |
| 3363 | pm_message_t state) |
| 3364 | { |
| 3365 | struct ab8500_charger *di = platform_get_drvdata(pdev); |
| 3366 | |
| 3367 | /* Cancel any pending HW failure check */ |
| 3368 | if (delayed_work_pending(&di->check_hw_failure_work)) |
| 3369 | cancel_delayed_work(&di->check_hw_failure_work); |
| 3370 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3371 | if (delayed_work_pending(&di->vbus_drop_end_work)) |
| 3372 | cancel_delayed_work(&di->vbus_drop_end_work); |
| 3373 | |
Jonas Aaberg | 53ef1f5 | 2012-05-21 16:05:01 +0200 | [diff] [blame] | 3374 | flush_delayed_work(&di->attach_work); |
| 3375 | flush_delayed_work(&di->usb_charger_attached_work); |
| 3376 | flush_delayed_work(&di->ac_charger_attached_work); |
| 3377 | flush_delayed_work(&di->check_usbchgnotok_work); |
| 3378 | flush_delayed_work(&di->check_vbat_work); |
| 3379 | flush_delayed_work(&di->kick_wd_work); |
| 3380 | |
| 3381 | flush_work(&di->usb_link_status_work); |
| 3382 | flush_work(&di->ac_work); |
| 3383 | flush_work(&di->detect_usb_type_work); |
| 3384 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3385 | if (atomic_read(&di->current_stepping_sessions)) |
| 3386 | return -EAGAIN; |
| 3387 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3388 | return 0; |
| 3389 | } |
| 3390 | #else |
| 3391 | #define ab8500_charger_suspend NULL |
| 3392 | #define ab8500_charger_resume NULL |
| 3393 | #endif |
| 3394 | |
Lee Jones | 8891716 | 2013-02-13 11:39:19 +0000 | [diff] [blame] | 3395 | static struct notifier_block charger_nb = { |
| 3396 | .notifier_call = ab8500_external_charger_prepare, |
| 3397 | }; |
| 3398 | |
Bill Pemberton | 415ec69 | 2012-11-19 13:26:07 -0500 | [diff] [blame] | 3399 | static int ab8500_charger_remove(struct platform_device *pdev) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3400 | { |
| 3401 | struct ab8500_charger *di = platform_get_drvdata(pdev); |
| 3402 | int i, irq, ret; |
| 3403 | |
| 3404 | /* Disable AC charging */ |
| 3405 | ab8500_charger_ac_en(&di->ac_chg, false, 0, 0); |
| 3406 | |
| 3407 | /* Disable USB charging */ |
| 3408 | ab8500_charger_usb_en(&di->usb_chg, false, 0, 0); |
| 3409 | |
| 3410 | /* Disable interrupts */ |
| 3411 | for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) { |
| 3412 | irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); |
| 3413 | free_irq(irq, di); |
| 3414 | } |
| 3415 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3416 | /* Backup battery voltage and current disable */ |
| 3417 | ret = abx500_mask_and_set_register_interruptible(di->dev, |
| 3418 | AB8500_RTC, AB8500_RTC_CTRL_REG, RTC_BUP_CH_ENA, 0); |
| 3419 | if (ret < 0) |
| 3420 | dev_err(di->dev, "%s mask and set failed\n", __func__); |
| 3421 | |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 3422 | usb_unregister_notifier(di->usb_phy, &di->nb); |
Kishon Vijay Abraham I | 721002e | 2012-06-22 17:02:45 +0530 | [diff] [blame] | 3423 | usb_put_phy(di->usb_phy); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3424 | |
| 3425 | /* Delete the work queue */ |
| 3426 | destroy_workqueue(di->charger_wq); |
| 3427 | |
Lee Jones | 8891716 | 2013-02-13 11:39:19 +0000 | [diff] [blame] | 3428 | /* Unregister external charger enable notifier */ |
| 3429 | if (!di->ac_chg.enabled) |
| 3430 | blocking_notifier_chain_unregister( |
| 3431 | &charger_notifier_list, &charger_nb); |
| 3432 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3433 | flush_scheduled_work(); |
Lee Jones | 72a90dd | 2013-02-14 09:22:48 +0000 | [diff] [blame] | 3434 | if (di->usb_chg.enabled) |
Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame] | 3435 | power_supply_unregister(&di->usb_chg.psy); |
Marcus Cooper | 405fea1 | 2012-08-10 12:59:06 +0200 | [diff] [blame] | 3436 | |
| 3437 | if (di->ac_chg.enabled && !di->ac_chg.external) |
Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame] | 3438 | power_supply_unregister(&di->ac_chg.psy); |
Marcus Cooper | 405fea1 | 2012-08-10 12:59:06 +0200 | [diff] [blame] | 3439 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3440 | platform_set_drvdata(pdev, NULL); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3441 | |
| 3442 | return 0; |
| 3443 | } |
| 3444 | |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3445 | static char *supply_interface[] = { |
| 3446 | "ab8500_chargalg", |
| 3447 | "ab8500_fg", |
| 3448 | "ab8500_btemp", |
| 3449 | }; |
| 3450 | |
Bill Pemberton | c8afa64 | 2012-11-19 13:22:23 -0500 | [diff] [blame] | 3451 | static int ab8500_charger_probe(struct platform_device *pdev) |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3452 | { |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3453 | struct device_node *np = pdev->dev.of_node; |
Lee Jones | 7722b79 | 2012-11-30 10:56:28 +0000 | [diff] [blame] | 3454 | struct abx500_bm_data *plat = pdev->dev.platform_data; |
Lee Jones | 2aac3de | 2012-05-05 04:38:19 -0700 | [diff] [blame] | 3455 | struct ab8500_charger *di; |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 3456 | int irq, i, charger_status, ret = 0, ch_stat; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3457 | |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3458 | di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL); |
| 3459 | if (!di) { |
| 3460 | dev_err(&pdev->dev, "%s no mem for ab8500_charger\n", __func__); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3461 | return -ENOMEM; |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3462 | } |
Lee Jones | 7722b79 | 2012-11-30 10:56:28 +0000 | [diff] [blame] | 3463 | |
| 3464 | if (!plat) { |
| 3465 | dev_err(&pdev->dev, "no battery management data supplied\n"); |
| 3466 | return -EINVAL; |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3467 | } |
Lee Jones | 7722b79 | 2012-11-30 10:56:28 +0000 | [diff] [blame] | 3468 | di->bm = plat; |
| 3469 | |
| 3470 | if (np) { |
| 3471 | ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm); |
| 3472 | if (ret) { |
| 3473 | dev_err(&pdev->dev, "failed to get battery information\n"); |
| 3474 | return ret; |
| 3475 | } |
| 3476 | di->autopower_cfg = of_property_read_bool(np, "autopower_cfg"); |
| 3477 | } else |
| 3478 | di->autopower_cfg = false; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3479 | |
| 3480 | /* get parent data */ |
| 3481 | di->dev = &pdev->dev; |
| 3482 | di->parent = dev_get_drvdata(pdev->dev.parent); |
| 3483 | di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); |
| 3484 | |
| 3485 | /* initialize lock */ |
| 3486 | spin_lock_init(&di->usb_state.usb_lock); |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3487 | mutex_init(&di->usb_ipt_crnt_lock); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3488 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3489 | di->autopower = false; |
Henrik Sölver | ff38090 | 2012-04-17 15:51:01 +0200 | [diff] [blame] | 3490 | di->invalid_charger_detect_state = 0; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3491 | |
| 3492 | /* AC supply */ |
| 3493 | /* power_supply base class */ |
| 3494 | di->ac_chg.psy.name = "ab8500_ac"; |
| 3495 | di->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS; |
| 3496 | di->ac_chg.psy.properties = ab8500_charger_ac_props; |
| 3497 | di->ac_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_ac_props); |
| 3498 | di->ac_chg.psy.get_property = ab8500_charger_ac_get_property; |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3499 | di->ac_chg.psy.supplied_to = supply_interface; |
| 3500 | di->ac_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface), |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3501 | /* ux500_charger sub-class */ |
| 3502 | di->ac_chg.ops.enable = &ab8500_charger_ac_en; |
Lee Jones | 4dcdf57 | 2013-02-14 09:24:10 +0000 | [diff] [blame] | 3503 | di->ac_chg.ops.check_enable = &ab8500_charger_ac_check_enable; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3504 | di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick; |
| 3505 | di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current; |
| 3506 | di->ac_chg.max_out_volt = ab8500_charger_voltage_map[ |
| 3507 | ARRAY_SIZE(ab8500_charger_voltage_map) - 1]; |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3508 | di->ac_chg.max_out_curr = |
| 3509 | di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1]; |
Loic Pallardy | e07a564 | 2012-05-10 15:33:56 +0200 | [diff] [blame] | 3510 | di->ac_chg.wdt_refresh = CHG_WD_INTERVAL; |
Lee Jones | 97034a1 | 2013-01-17 16:08:42 +0000 | [diff] [blame] | 3511 | di->ac_chg.enabled = di->bm->ac_enabled; |
Loic Pallardy | e07a564 | 2012-05-10 15:33:56 +0200 | [diff] [blame] | 3512 | di->ac_chg.external = false; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3513 | |
Lee Jones | 8891716 | 2013-02-13 11:39:19 +0000 | [diff] [blame] | 3514 | /*notifier for external charger enabling*/ |
| 3515 | if (!di->ac_chg.enabled) |
| 3516 | blocking_notifier_chain_register( |
| 3517 | &charger_notifier_list, &charger_nb); |
| 3518 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3519 | /* USB supply */ |
| 3520 | /* power_supply base class */ |
| 3521 | di->usb_chg.psy.name = "ab8500_usb"; |
| 3522 | di->usb_chg.psy.type = POWER_SUPPLY_TYPE_USB; |
| 3523 | di->usb_chg.psy.properties = ab8500_charger_usb_props; |
| 3524 | di->usb_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_usb_props); |
| 3525 | di->usb_chg.psy.get_property = ab8500_charger_usb_get_property; |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3526 | di->usb_chg.psy.supplied_to = supply_interface; |
| 3527 | di->usb_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface), |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3528 | /* ux500_charger sub-class */ |
| 3529 | di->usb_chg.ops.enable = &ab8500_charger_usb_en; |
Lee Jones | 4dcdf57 | 2013-02-14 09:24:10 +0000 | [diff] [blame] | 3530 | di->usb_chg.ops.check_enable = &ab8500_charger_usb_check_enable; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3531 | di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick; |
| 3532 | di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current; |
Lee Jones | db43e6c | 2013-02-14 12:39:15 +0000 | [diff] [blame] | 3533 | di->usb_chg.ops.pp_enable = &ab8540_charger_power_path_enable; |
| 3534 | di->usb_chg.ops.pre_chg_enable = &ab8540_charger_usb_pre_chg_enable; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3535 | di->usb_chg.max_out_volt = ab8500_charger_voltage_map[ |
| 3536 | ARRAY_SIZE(ab8500_charger_voltage_map) - 1]; |
Lee Jones | 861a30d | 2012-08-29 20:36:51 +0800 | [diff] [blame] | 3537 | di->usb_chg.max_out_curr = |
| 3538 | di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1]; |
Loic Pallardy | e07a564 | 2012-05-10 15:33:56 +0200 | [diff] [blame] | 3539 | di->usb_chg.wdt_refresh = CHG_WD_INTERVAL; |
Lee Jones | 97034a1 | 2013-01-17 16:08:42 +0000 | [diff] [blame] | 3540 | di->usb_chg.enabled = di->bm->usb_enabled; |
Loic Pallardy | e07a564 | 2012-05-10 15:33:56 +0200 | [diff] [blame] | 3541 | di->usb_chg.external = false; |
Lee Jones | db43e6c | 2013-02-14 12:39:15 +0000 | [diff] [blame] | 3542 | di->usb_chg.power_path = di->bm->usb_power_path; |
Lee Jones | f7470b5 | 2013-02-14 12:37:29 +0000 | [diff] [blame] | 3543 | di->usb_state.usb_current = -1; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3544 | |
| 3545 | /* Create a work queue for the charger */ |
| 3546 | di->charger_wq = |
| 3547 | create_singlethread_workqueue("ab8500_charger_wq"); |
| 3548 | if (di->charger_wq == NULL) { |
| 3549 | dev_err(di->dev, "failed to create work queue\n"); |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3550 | return -ENOMEM; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3551 | } |
| 3552 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 3553 | mutex_init(&di->charger_attached_mutex); |
| 3554 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3555 | /* Init work for HW failure check */ |
Tejun Heo | 203b42f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 3556 | INIT_DEFERRABLE_WORK(&di->check_hw_failure_work, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3557 | ab8500_charger_check_hw_failure_work); |
Tejun Heo | 203b42f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 3558 | INIT_DEFERRABLE_WORK(&di->check_usbchgnotok_work, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3559 | ab8500_charger_check_usbchargernotok_work); |
| 3560 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 3561 | INIT_DELAYED_WORK(&di->ac_charger_attached_work, |
| 3562 | ab8500_charger_ac_attached_work); |
| 3563 | INIT_DELAYED_WORK(&di->usb_charger_attached_work, |
| 3564 | ab8500_charger_usb_attached_work); |
| 3565 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3566 | /* |
| 3567 | * For ABB revision 1.0 and 1.1 there is a bug in the watchdog |
| 3568 | * logic. That means we have to continously kick the charger |
| 3569 | * watchdog even when no charger is connected. This is only |
| 3570 | * valid once the AC charger has been enabled. This is |
| 3571 | * a bug that is not handled by the algorithm and the |
| 3572 | * watchdog have to be kicked by the charger driver |
| 3573 | * when the AC charger is disabled |
| 3574 | */ |
Tejun Heo | 203b42f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 3575 | INIT_DEFERRABLE_WORK(&di->kick_wd_work, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3576 | ab8500_charger_kick_watchdog_work); |
| 3577 | |
Tejun Heo | 203b42f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 3578 | INIT_DEFERRABLE_WORK(&di->check_vbat_work, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3579 | ab8500_charger_check_vbat_work); |
| 3580 | |
Marcus Cooper | 4b45f4a | 2013-01-11 13:13:04 +0000 | [diff] [blame] | 3581 | INIT_DELAYED_WORK(&di->attach_work, |
| 3582 | ab8500_charger_usb_link_attach_work); |
| 3583 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3584 | INIT_DELAYED_WORK(&di->usb_state_changed_work, |
| 3585 | ab8500_charger_usb_state_changed_work); |
| 3586 | |
| 3587 | INIT_DELAYED_WORK(&di->vbus_drop_end_work, |
| 3588 | ab8500_charger_vbus_drop_end_work); |
| 3589 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3590 | /* Init work for charger detection */ |
| 3591 | INIT_WORK(&di->usb_link_status_work, |
| 3592 | ab8500_charger_usb_link_status_work); |
| 3593 | INIT_WORK(&di->ac_work, ab8500_charger_ac_work); |
| 3594 | INIT_WORK(&di->detect_usb_type_work, |
| 3595 | ab8500_charger_detect_usb_type_work); |
| 3596 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3597 | /* Init work for checking HW status */ |
| 3598 | INIT_WORK(&di->check_main_thermal_prot_work, |
| 3599 | ab8500_charger_check_main_thermal_prot_work); |
| 3600 | INIT_WORK(&di->check_usb_thermal_prot_work, |
| 3601 | ab8500_charger_check_usb_thermal_prot_work); |
| 3602 | |
| 3603 | /* |
| 3604 | * VDD ADC supply needs to be enabled from this driver when there |
| 3605 | * is a charger connected to avoid erroneous BTEMP_HIGH/LOW |
| 3606 | * interrupts during charging |
| 3607 | */ |
Sachin Kamat | 8feffd1 | 2012-12-07 17:23:28 +0530 | [diff] [blame] | 3608 | di->regu = devm_regulator_get(di->dev, "vddadc"); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3609 | if (IS_ERR(di->regu)) { |
| 3610 | ret = PTR_ERR(di->regu); |
| 3611 | dev_err(di->dev, "failed to get vddadc regulator\n"); |
| 3612 | goto free_charger_wq; |
| 3613 | } |
| 3614 | |
| 3615 | |
| 3616 | /* Initialize OVV, and other registers */ |
| 3617 | ret = ab8500_charger_init_hw_registers(di); |
| 3618 | if (ret) { |
| 3619 | dev_err(di->dev, "failed to initialize ABB registers\n"); |
Sachin Kamat | 8feffd1 | 2012-12-07 17:23:28 +0530 | [diff] [blame] | 3620 | goto free_charger_wq; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3621 | } |
| 3622 | |
| 3623 | /* Register AC charger class */ |
Lee Jones | 72a90dd | 2013-02-14 09:22:48 +0000 | [diff] [blame] | 3624 | if (di->ac_chg.enabled) { |
Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame] | 3625 | ret = power_supply_register(di->dev, &di->ac_chg.psy); |
| 3626 | if (ret) { |
| 3627 | dev_err(di->dev, "failed to register AC charger\n"); |
| 3628 | goto free_charger_wq; |
| 3629 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3630 | } |
| 3631 | |
| 3632 | /* Register USB charger class */ |
Lee Jones | 72a90dd | 2013-02-14 09:22:48 +0000 | [diff] [blame] | 3633 | if (di->usb_chg.enabled) { |
Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame] | 3634 | ret = power_supply_register(di->dev, &di->usb_chg.psy); |
| 3635 | if (ret) { |
| 3636 | dev_err(di->dev, "failed to register USB charger\n"); |
| 3637 | goto free_ac; |
| 3638 | } |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3639 | } |
| 3640 | |
Kishon Vijay Abraham I | 662dca5 | 2012-06-22 17:02:46 +0530 | [diff] [blame] | 3641 | di->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2); |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 3642 | if (IS_ERR_OR_NULL(di->usb_phy)) { |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 3643 | dev_err(di->dev, "failed to get usb transceiver\n"); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3644 | ret = -EINVAL; |
| 3645 | goto free_usb; |
| 3646 | } |
| 3647 | di->nb.notifier_call = ab8500_charger_usb_notifier_call; |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 3648 | ret = usb_register_notifier(di->usb_phy, &di->nb); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3649 | if (ret) { |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 3650 | dev_err(di->dev, "failed to register usb notifier\n"); |
| 3651 | goto put_usb_phy; |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3652 | } |
| 3653 | |
| 3654 | /* Identify the connected charger types during startup */ |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3655 | charger_status = ab8500_charger_detect_chargers(di, true); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3656 | if (charger_status & AC_PW_CONN) { |
| 3657 | di->ac.charger_connected = 1; |
| 3658 | di->ac_conn = true; |
| 3659 | ab8500_power_supply_changed(di, &di->ac_chg.psy); |
| 3660 | sysfs_notify(&di->ac_chg.psy.dev->kobj, NULL, "present"); |
| 3661 | } |
| 3662 | |
| 3663 | if (charger_status & USB_PW_CONN) { |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3664 | di->vbus_detected = true; |
| 3665 | di->vbus_detected_start = true; |
| 3666 | queue_work(di->charger_wq, |
| 3667 | &di->detect_usb_type_work); |
| 3668 | } |
| 3669 | |
| 3670 | /* Register interrupts */ |
| 3671 | for (i = 0; i < ARRAY_SIZE(ab8500_charger_irq); i++) { |
| 3672 | irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); |
| 3673 | ret = request_threaded_irq(irq, NULL, ab8500_charger_irq[i].isr, |
| 3674 | IRQF_SHARED | IRQF_NO_SUSPEND, |
| 3675 | ab8500_charger_irq[i].name, di); |
| 3676 | |
| 3677 | if (ret != 0) { |
| 3678 | dev_err(di->dev, "failed to request %s IRQ %d: %d\n" |
| 3679 | , ab8500_charger_irq[i].name, irq, ret); |
| 3680 | goto free_irq; |
| 3681 | } |
| 3682 | dev_dbg(di->dev, "Requested %s IRQ %d: %d\n", |
| 3683 | ab8500_charger_irq[i].name, irq, ret); |
| 3684 | } |
| 3685 | |
| 3686 | platform_set_drvdata(pdev, di); |
| 3687 | |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 3688 | mutex_lock(&di->charger_attached_mutex); |
| 3689 | |
Paer-Olof Haakansson | 34c11a7 | 2012-02-22 19:07:51 +0100 | [diff] [blame] | 3690 | ch_stat = ab8500_charger_detect_chargers(di, false); |
Lee Jones | b269fff | 2013-01-11 13:12:51 +0000 | [diff] [blame] | 3691 | |
| 3692 | if ((ch_stat & AC_PW_CONN) == AC_PW_CONN) { |
| 3693 | queue_delayed_work(di->charger_wq, |
| 3694 | &di->ac_charger_attached_work, |
| 3695 | HZ); |
| 3696 | } |
| 3697 | if ((ch_stat & USB_PW_CONN) == USB_PW_CONN) { |
| 3698 | queue_delayed_work(di->charger_wq, |
| 3699 | &di->usb_charger_attached_work, |
| 3700 | HZ); |
| 3701 | } |
| 3702 | |
| 3703 | mutex_unlock(&di->charger_attached_mutex); |
| 3704 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3705 | return ret; |
| 3706 | |
| 3707 | free_irq: |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 3708 | usb_unregister_notifier(di->usb_phy, &di->nb); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3709 | |
| 3710 | /* We also have to free all successfully registered irqs */ |
| 3711 | for (i = i - 1; i >= 0; i--) { |
| 3712 | irq = platform_get_irq_byname(pdev, ab8500_charger_irq[i].name); |
| 3713 | free_irq(irq, di); |
| 3714 | } |
Anton Vorontsov | efd71c8 | 2012-03-14 04:22:17 +0400 | [diff] [blame] | 3715 | put_usb_phy: |
Kishon Vijay Abraham I | 721002e | 2012-06-22 17:02:45 +0530 | [diff] [blame] | 3716 | usb_put_phy(di->usb_phy); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3717 | free_usb: |
Lee Jones | 72a90dd | 2013-02-14 09:22:48 +0000 | [diff] [blame] | 3718 | if (di->usb_chg.enabled) |
Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame] | 3719 | power_supply_unregister(&di->usb_chg.psy); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3720 | free_ac: |
Lee Jones | 72a90dd | 2013-02-14 09:22:48 +0000 | [diff] [blame] | 3721 | if (di->ac_chg.enabled) |
Michel JAOUEN | 01ec8c5 | 2012-04-26 10:00:04 +0200 | [diff] [blame] | 3722 | power_supply_unregister(&di->ac_chg.psy); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3723 | free_charger_wq: |
| 3724 | destroy_workqueue(di->charger_wq); |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3725 | return ret; |
| 3726 | } |
| 3727 | |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3728 | static const struct of_device_id ab8500_charger_match[] = { |
| 3729 | { .compatible = "stericsson,ab8500-charger", }, |
| 3730 | { }, |
| 3731 | }; |
| 3732 | |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3733 | static struct platform_driver ab8500_charger_driver = { |
| 3734 | .probe = ab8500_charger_probe, |
Bill Pemberton | 28ea73f | 2012-11-19 13:20:40 -0500 | [diff] [blame] | 3735 | .remove = ab8500_charger_remove, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3736 | .suspend = ab8500_charger_suspend, |
| 3737 | .resume = ab8500_charger_resume, |
| 3738 | .driver = { |
| 3739 | .name = "ab8500-charger", |
| 3740 | .owner = THIS_MODULE, |
Rajanikanth H.V | 4aef72d | 2012-11-18 19:17:47 -0800 | [diff] [blame] | 3741 | .of_match_table = ab8500_charger_match, |
Arun Murthy | 84edbee | 2012-02-29 21:54:26 +0530 | [diff] [blame] | 3742 | }, |
| 3743 | }; |
| 3744 | |
| 3745 | static int __init ab8500_charger_init(void) |
| 3746 | { |
| 3747 | return platform_driver_register(&ab8500_charger_driver); |
| 3748 | } |
| 3749 | |
| 3750 | static void __exit ab8500_charger_exit(void) |
| 3751 | { |
| 3752 | platform_driver_unregister(&ab8500_charger_driver); |
| 3753 | } |
| 3754 | |
| 3755 | subsys_initcall_sync(ab8500_charger_init); |
| 3756 | module_exit(ab8500_charger_exit); |
| 3757 | |
| 3758 | MODULE_LICENSE("GPL v2"); |
| 3759 | MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy"); |
| 3760 | MODULE_ALIAS("platform:ab8500-charger"); |
| 3761 | MODULE_DESCRIPTION("AB8500 charger management driver"); |