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Richard Purdiee8b6f7f2005-11-13 10:07:47 +00001/*
2 * Battery and Power Management code for the Sharp SL-Cxx00
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>
Randy Dunlap158f1e92011-06-14 17:06:02 -070017#include <linux/gpio.h>
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000018#include <linux/interrupt.h>
19#include <linux/platform_device.h>
Russell King14fca612007-02-27 12:10:07 +000020#include <linux/apm-emulation.h>
21
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000022#include <asm/irq.h>
23#include <asm/mach-types.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010024#include <mach/hardware.h>
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000025
Russell Kinga09e64f2008-08-05 16:14:15 +010026#include <mach/spitz.h>
Eric Miaob6eede12010-01-11 16:17:25 +080027#include <mach/pxa27x.h>
Eric Miao04e4ad22010-07-05 00:03:34 +080028#include <mach/sharpsl_pm.h>
Eric Miaob6eede12010-01-11 16:17:25 +080029
Eric Miaob6eede12010-01-11 16:17:25 +080030#include "generic.h"
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000031
Richard Purdief8703dc2006-06-19 19:58:52 +010032#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 Purdiee8b6f7f2005-11-13 10:07:47 +000039static int spitz_last_ac_status;
40
Eric Miaob6eede12010-01-11 16:17:25 +080041static struct gpio spitz_charger_gpios[] = {
42 { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" },
43 { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" },
44 { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
45 { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" },
46 { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" },
47};
48
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000049static void spitz_charger_init(void)
50{
Eric Miaob6eede12010-01-11 16:17:25 +080051 gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios));
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000052}
53
54static void spitz_measure_temp(int on)
55{
Eric Miaofff14722008-09-05 22:15:23 +080056 gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000057}
58
59static void spitz_charge(int on)
60{
61 if (on) {
62 if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
Eric Miaofff14722008-09-05 22:15:23 +080063 gpio_set_value(SPITZ_GPIO_JK_B, 1);
64 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000065 } else {
Eric Miaofff14722008-09-05 22:15:23 +080066 gpio_set_value(SPITZ_GPIO_JK_B, 0);
67 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000068 }
69 } else {
Eric Miaofff14722008-09-05 22:15:23 +080070 gpio_set_value(SPITZ_GPIO_JK_B, 0);
71 gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000072 }
73}
74
75static void spitz_discharge(int on)
76{
Eric Miaofff14722008-09-05 22:15:23 +080077 gpio_set_value(SPITZ_GPIO_JK_A, on);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000078}
79
80/* HACK - For unknown reasons, accurate voltage readings are only made with a load
81 on the power bus which the green led on spitz provides */
82static void spitz_discharge1(int on)
83{
Eric Miaofff14722008-09-05 22:15:23 +080084 gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000085}
86
Eric Miaob6eede12010-01-11 16:17:25 +080087static unsigned long gpio18_config[] = {
88 GPIO18_RDY,
89 GPIO18_GPIO,
90};
91
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000092static void spitz_presuspend(void)
93{
Richard Purdieb7557de2006-01-05 20:44:55 +000094 spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +000095
96 /* GPIO Sleep Register */
97 PGSR0 = 0x00144018;
98 PGSR1 = 0x00EF0000;
99 if (machine_is_akita()) {
100 PGSR2 = 0x2121C000;
101 PGSR3 = 0x00600400;
102 } else {
103 PGSR2 = 0x0121C000;
104 PGSR3 = 0x00600000;
105 }
106
107 PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
108 PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
109 PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
110 PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
111 PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
112
Eric Miaob6eede12010-01-11 16:17:25 +0800113 pxa2xx_mfp_config(&gpio18_config[0], 1);
114 gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
115 gpio_free(18);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000116
117 PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
118 PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
119 PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
120 PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
Pavel Machekb64b0b72009-10-22 21:35:33 +0200121 PKSR = 0xffffffff; /* clear */
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000122
123 /* nRESET_OUT Disable */
124 PSLR |= PSLR_SL_ROD;
125
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000126 /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
127 PCFR = PCFR_GPR_EN | PCFR_OPDE;
128}
129
130static void spitz_postsuspend(void)
131{
Eric Miaob6eede12010-01-11 16:17:25 +0800132 pxa2xx_mfp_config(&gpio18_config[1], 1);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000133}
134
135static int spitz_should_wakeup(unsigned int resume_on_alarm)
136{
137 int is_resume = 0;
Richard Purdieb7557de2006-01-05 20:44:55 +0000138 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000139
140 if (spitz_last_ac_status != acin) {
141 if (acin) {
142 /* charge on */
143 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
144 dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
145 } else {
146 /* charge off */
147 dev_dbg(sharpsl_pm.dev, "AC Removed\n");
Richard Purdieb7557de2006-01-05 20:44:55 +0000148 sharpsl_pm_led(SHARPSL_LED_OFF);
149 sharpsl_pm.machinfo->charge(0);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000150 sharpsl_pm.charge_mode = CHRG_OFF;
151 }
152 spitz_last_ac_status = acin;
153 /* Return to suspend as this must be what we were woken for */
154 return 0;
155 }
156
157 if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
158 is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);
159
160 if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
161 is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);
162
163 if (resume_on_alarm && (PEDR & PWER_RTC))
164 is_resume |= PWER_RTC;
165
Pavel Machekb64b0b72009-10-22 21:35:33 +0200166 dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000167 return is_resume;
168}
169
170static unsigned long spitz_charger_wakeup(void)
171{
172 return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));
173}
174
Richard Purdieb7557de2006-01-05 20:44:55 +0000175unsigned long spitzpm_read_devdata(int type)
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000176{
Pavel Machekb64b0b72009-10-22 21:35:33 +0200177 switch (type) {
Richard Purdieb7557de2006-01-05 20:44:55 +0000178 case SHARPSL_STATUS_ACIN:
179 return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);
180 case SHARPSL_STATUS_LOCK:
Eric Miao05732d7e2010-07-04 23:45:36 +0800181 return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
Richard Purdieb7557de2006-01-05 20:44:55 +0000182 case SHARPSL_STATUS_CHRGFULL:
Eric Miao05732d7e2010-07-04 23:45:36 +0800183 return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
Richard Purdieb7557de2006-01-05 20:44:55 +0000184 case SHARPSL_STATUS_FATAL:
Eric Miao05732d7e2010-07-04 23:45:36 +0800185 return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
Richard Purdieb7557de2006-01-05 20:44:55 +0000186 case SHARPSL_ACIN_VOLT:
187 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
188 case SHARPSL_BATT_TEMP:
189 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
190 case SHARPSL_BATT_VOLT:
191 default:
192 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
193 }
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000194}
195
196struct sharpsl_charger_machinfo spitz_pm_machinfo = {
197 .init = spitz_charger_init,
Dmitry Eremin-Solenikovd48898a2009-03-28 18:18:52 +0300198 .exit = NULL,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000199 .gpio_batlock = SPITZ_GPIO_BAT_COVER,
200 .gpio_acin = SPITZ_GPIO_AC_IN,
201 .gpio_batfull = SPITZ_GPIO_CHRG_FULL,
Richard Purdief8703dc2006-06-19 19:58:52 +0100202 .batfull_irq = 1,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000203 .gpio_fatal = SPITZ_GPIO_FATAL_BAT,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000204 .discharge = spitz_discharge,
205 .discharge1 = spitz_discharge1,
206 .charge = spitz_charge,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000207 .measure_temp = spitz_measure_temp,
208 .presuspend = spitz_presuspend,
209 .postsuspend = spitz_postsuspend,
Richard Purdieb7557de2006-01-05 20:44:55 +0000210 .read_devdata = spitzpm_read_devdata,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000211 .charger_wakeup = spitz_charger_wakeup,
212 .should_wakeup = spitz_should_wakeup,
Dmitry Baryshkov5cbff962008-10-28 20:26:40 +0300213#if defined(CONFIG_LCD_CORGI)
214 .backlight_limit = corgi_lcd_limit_intensity,
Russell King02a8e762008-04-20 17:15:32 +0100215#endif
Richard Purdief8703dc2006-06-19 19:58:52 +0100216 .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
217 .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
218 .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
219 .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
220 .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
221 .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000222 .bat_levels = 40,
Pavel Machek0ba01eb2009-10-22 22:16:34 +0200223 .bat_levels_noac = sharpsl_battery_levels_noac,
224 .bat_levels_acin = sharpsl_battery_levels_acin,
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000225 .status_high_acin = 188,
226 .status_low_acin = 178,
227 .status_high_noac = 185,
228 .status_low_noac = 175,
229};
230
231static struct platform_device *spitzpm_device;
232
233static int __devinit spitzpm_init(void)
234{
235 int ret;
236
Dmitry Baryshkov5806d8a2008-05-31 16:17:32 +0100237 if (!machine_is_spitz() && !machine_is_akita()
238 && !machine_is_borzoi())
239 return -ENODEV;
240
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000241 spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
242 if (!spitzpm_device)
243 return -ENOMEM;
244
245 spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
246 ret = platform_device_add(spitzpm_device);
247
248 if (ret)
249 platform_device_put(spitzpm_device);
250
251 return ret;
252}
253
254static void spitzpm_exit(void)
255{
Pavel Machekb64b0b72009-10-22 21:35:33 +0200256 platform_device_unregister(spitzpm_device);
Richard Purdiee8b6f7f2005-11-13 10:07:47 +0000257}
258
259module_init(spitzpm_init);
260module_exit(spitzpm_exit);