Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Battery and Power Management code for the Sharp SL-C7xx |
| 3 | * |
| 4 | * Copyright (c) 2005 Richard Purdie |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/stat.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/interrupt.h> |
| 18 | #include <linux/platform_device.h> |
Russell King | 14fca61 | 2007-02-27 12:10:07 +0000 | [diff] [blame] | 19 | #include <linux/apm-emulation.h> |
| 20 | |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 21 | #include <asm/irq.h> |
| 22 | #include <asm/mach-types.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 23 | #include <mach/hardware.h> |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 24 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 25 | #include <mach/sharpsl.h> |
| 26 | #include <mach/corgi.h> |
| 27 | #include <mach/pxa-regs.h> |
| 28 | #include <mach/pxa2xx-regs.h> |
| 29 | #include <mach/pxa2xx-gpio.h> |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 30 | #include "sharpsl.h" |
| 31 | |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 32 | #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ |
| 33 | #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ |
| 34 | #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ |
| 35 | #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ |
| 36 | #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ |
| 37 | #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ |
| 38 | |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 39 | static void corgi_charger_init(void) |
| 40 | { |
| 41 | pxa_gpio_mode(CORGI_GPIO_ADC_TEMP_ON | GPIO_OUT); |
| 42 | pxa_gpio_mode(CORGI_GPIO_CHRG_ON | GPIO_OUT); |
| 43 | pxa_gpio_mode(CORGI_GPIO_CHRG_UKN | GPIO_OUT); |
| 44 | pxa_gpio_mode(CORGI_GPIO_KEY_INT | GPIO_IN); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 45 | sharpsl_pm_pxa_init(); |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 46 | } |
| 47 | |
| 48 | static void corgi_measure_temp(int on) |
| 49 | { |
| 50 | if (on) |
| 51 | GPSR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON); |
| 52 | else |
| 53 | GPCR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON); |
| 54 | } |
| 55 | |
| 56 | static void corgi_charge(int on) |
| 57 | { |
| 58 | if (on) { |
| 59 | if (machine_is_corgi() && (sharpsl_pm.flags & SHARPSL_SUSPENDED)) { |
| 60 | GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON); |
| 61 | GPSR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN); |
| 62 | } else { |
| 63 | GPSR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON); |
| 64 | GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN); |
| 65 | } |
| 66 | } else { |
| 67 | GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON); |
| 68 | GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | static void corgi_discharge(int on) |
| 73 | { |
| 74 | if (on) |
| 75 | GPSR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON); |
| 76 | else |
| 77 | GPCR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON); |
| 78 | } |
| 79 | |
| 80 | static void corgi_presuspend(void) |
| 81 | { |
| 82 | int i; |
| 83 | unsigned long wakeup_mask; |
| 84 | |
| 85 | /* charging , so CHARGE_ON bit is HIGH during OFF. */ |
| 86 | if (READ_GPIO_BIT(CORGI_GPIO_CHRG_ON)) |
| 87 | PGSR1 |= GPIO_bit(CORGI_GPIO_CHRG_ON); |
| 88 | else |
| 89 | PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_ON); |
| 90 | |
| 91 | if (READ_GPIO_BIT(CORGI_GPIO_LED_ORANGE)) |
| 92 | PGSR0 |= GPIO_bit(CORGI_GPIO_LED_ORANGE); |
| 93 | else |
| 94 | PGSR0 &= ~GPIO_bit(CORGI_GPIO_LED_ORANGE); |
| 95 | |
| 96 | if (READ_GPIO_BIT(CORGI_GPIO_CHRG_UKN)) |
| 97 | PGSR1 |= GPIO_bit(CORGI_GPIO_CHRG_UKN); |
| 98 | else |
| 99 | PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_UKN); |
| 100 | |
| 101 | /* Resume on keyboard power key */ |
| 102 | PGSR2 = (PGSR2 & ~CORGI_GPIO_ALL_STROBE_BIT) | CORGI_GPIO_STROBE_BIT(0); |
| 103 | |
| 104 | wakeup_mask = GPIO_bit(CORGI_GPIO_KEY_INT) | GPIO_bit(CORGI_GPIO_WAKEUP) | GPIO_bit(CORGI_GPIO_AC_IN) | GPIO_bit(CORGI_GPIO_CHRG_FULL); |
| 105 | |
| 106 | if (!machine_is_corgi()) |
| 107 | wakeup_mask |= GPIO_bit(CORGI_GPIO_MAIN_BAT_LOW); |
| 108 | |
| 109 | PWER = wakeup_mask | PWER_RTC; |
| 110 | PRER = wakeup_mask; |
| 111 | PFER = wakeup_mask; |
| 112 | |
| 113 | for (i = 0; i <=15; i++) { |
| 114 | if (PRER & PFER & GPIO_bit(i)) { |
| 115 | if (GPLR0 & GPIO_bit(i) ) |
| 116 | PRER &= ~GPIO_bit(i); |
| 117 | else |
| 118 | PFER &= ~GPIO_bit(i); |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | static void corgi_postsuspend(void) |
| 124 | { |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * Check what brought us out of the suspend. |
| 129 | * Return: 0 to sleep, otherwise wake |
| 130 | */ |
| 131 | static int corgi_should_wakeup(unsigned int resume_on_alarm) |
| 132 | { |
| 133 | int is_resume = 0; |
| 134 | |
| 135 | dev_dbg(sharpsl_pm.dev, "GPLR0 = %x,%x\n", GPLR0, PEDR); |
| 136 | |
| 137 | if ((PEDR & GPIO_bit(CORGI_GPIO_AC_IN))) { |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 138 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 139 | /* charge on */ |
| 140 | dev_dbg(sharpsl_pm.dev, "ac insert\n"); |
| 141 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; |
| 142 | } else { |
| 143 | /* charge off */ |
| 144 | dev_dbg(sharpsl_pm.dev, "ac remove\n"); |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 145 | sharpsl_pm_led(SHARPSL_LED_OFF); |
| 146 | sharpsl_pm.machinfo->charge(0); |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 147 | sharpsl_pm.charge_mode = CHRG_OFF; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | if ((PEDR & GPIO_bit(CORGI_GPIO_CHRG_FULL))) |
| 152 | dev_dbg(sharpsl_pm.dev, "Charge full interrupt\n"); |
| 153 | |
| 154 | if (PEDR & GPIO_bit(CORGI_GPIO_KEY_INT)) |
| 155 | is_resume |= GPIO_bit(CORGI_GPIO_KEY_INT); |
| 156 | |
| 157 | if (PEDR & GPIO_bit(CORGI_GPIO_WAKEUP)) |
| 158 | is_resume |= GPIO_bit(CORGI_GPIO_WAKEUP); |
| 159 | |
| 160 | if (resume_on_alarm && (PEDR & PWER_RTC)) |
| 161 | is_resume |= PWER_RTC; |
| 162 | |
| 163 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); |
| 164 | return is_resume; |
| 165 | } |
| 166 | |
| 167 | static unsigned long corgi_charger_wakeup(void) |
| 168 | { |
| 169 | return ~GPLR0 & ( GPIO_bit(CORGI_GPIO_AC_IN) | GPIO_bit(CORGI_GPIO_KEY_INT) | GPIO_bit(CORGI_GPIO_WAKEUP) ); |
| 170 | } |
| 171 | |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 172 | unsigned long corgipm_read_devdata(int type) |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 173 | { |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 174 | switch(type) { |
| 175 | case SHARPSL_STATUS_ACIN: |
| 176 | return ((GPLR(CORGI_GPIO_AC_IN) & GPIO_bit(CORGI_GPIO_AC_IN)) != 0); |
| 177 | case SHARPSL_STATUS_LOCK: |
| 178 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock); |
| 179 | case SHARPSL_STATUS_CHRGFULL: |
| 180 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull); |
| 181 | case SHARPSL_STATUS_FATAL: |
| 182 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal); |
| 183 | case SHARPSL_ACIN_VOLT: |
| 184 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); |
| 185 | case SHARPSL_BATT_TEMP: |
| 186 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); |
| 187 | case SHARPSL_BATT_VOLT: |
| 188 | default: |
| 189 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); |
| 190 | } |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | static struct sharpsl_charger_machinfo corgi_pm_machinfo = { |
| 194 | .init = corgi_charger_init, |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 195 | .exit = sharpsl_pm_pxa_remove, |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 196 | .gpio_batlock = CORGI_GPIO_BAT_COVER, |
| 197 | .gpio_acin = CORGI_GPIO_AC_IN, |
| 198 | .gpio_batfull = CORGI_GPIO_CHRG_FULL, |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 199 | .discharge = corgi_discharge, |
| 200 | .charge = corgi_charge, |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 201 | .measure_temp = corgi_measure_temp, |
| 202 | .presuspend = corgi_presuspend, |
| 203 | .postsuspend = corgi_postsuspend, |
Richard Purdie | b7557de | 2006-01-05 20:44:55 +0000 | [diff] [blame] | 204 | .read_devdata = corgipm_read_devdata, |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 205 | .charger_wakeup = corgi_charger_wakeup, |
| 206 | .should_wakeup = corgi_should_wakeup, |
Dmitry Baryshkov | 5cbff96 | 2008-10-28 20:26:40 +0300 | [diff] [blame^] | 207 | #if defined(CONFIG_LCD_CORGI) |
| 208 | .backlight_limit = corgi_lcd_limit_intensity, |
| 209 | #elif defined(CONFIG_BACKLIGHT_CORGI) |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 210 | .backlight_limit = corgibl_limit_intensity, |
Russell King | 02a8e76 | 2008-04-20 17:15:32 +0100 | [diff] [blame] | 211 | #endif |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 212 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
| 213 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, |
| 214 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, |
| 215 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, |
| 216 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, |
| 217 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, |
| 218 | .bat_levels = 40, |
| 219 | .bat_levels_noac = spitz_battery_levels_noac, |
| 220 | .bat_levels_acin = spitz_battery_levels_acin, |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 221 | .status_high_acin = 188, |
| 222 | .status_low_acin = 178, |
| 223 | .status_high_noac = 185, |
| 224 | .status_low_noac = 175, |
| 225 | }; |
| 226 | |
| 227 | static struct platform_device *corgipm_device; |
| 228 | |
| 229 | static int __devinit corgipm_init(void) |
| 230 | { |
| 231 | int ret; |
| 232 | |
Dmitry Baryshkov | 043fbc0 | 2008-05-31 16:16:54 +0100 | [diff] [blame] | 233 | if (!machine_is_corgi() && !machine_is_shepherd() |
| 234 | && !machine_is_husky()) |
| 235 | return -ENODEV; |
| 236 | |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 237 | corgipm_device = platform_device_alloc("sharpsl-pm", -1); |
| 238 | if (!corgipm_device) |
| 239 | return -ENOMEM; |
| 240 | |
Richard Purdie | f8703dc | 2006-06-19 19:58:52 +0100 | [diff] [blame] | 241 | if (!machine_is_corgi()) |
| 242 | corgi_pm_machinfo.batfull_irq = 1; |
| 243 | |
Richard Purdie | d72f25b | 2005-11-13 10:07:46 +0000 | [diff] [blame] | 244 | corgipm_device->dev.platform_data = &corgi_pm_machinfo; |
| 245 | ret = platform_device_add(corgipm_device); |
| 246 | |
| 247 | if (ret) |
| 248 | platform_device_put(corgipm_device); |
| 249 | |
| 250 | return ret; |
| 251 | } |
| 252 | |
| 253 | static void corgipm_exit(void) |
| 254 | { |
| 255 | platform_device_unregister(corgipm_device); |
| 256 | } |
| 257 | |
| 258 | module_init(corgipm_init); |
| 259 | module_exit(corgipm_exit); |