2 * Battery and Power Management code for the Sharp SL-C7xx
4 * Copyright (c) 2005 Richard Purdie
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.
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>
19 #include <linux/apm-emulation.h>
22 #include <asm/mach-types.h>
23 #include <asm/hardware.h>
24 #include <asm/hardware/scoop.h>
26 #include <asm/arch/sharpsl.h>
27 #include <asm/arch/corgi.h>
28 #include <asm/arch/pxa-regs.h>
29 #include <asm/arch/pxa2xx-regs.h>
30 #include <asm/arch/pxa2xx-gpio.h>
33 #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
34 #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
35 #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
36 #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
37 #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
38 #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
40 static void corgi_charger_init(void)
42 pxa_gpio_mode(CORGI_GPIO_ADC_TEMP_ON
| GPIO_OUT
);
43 pxa_gpio_mode(CORGI_GPIO_CHRG_ON
| GPIO_OUT
);
44 pxa_gpio_mode(CORGI_GPIO_CHRG_UKN
| GPIO_OUT
);
45 pxa_gpio_mode(CORGI_GPIO_KEY_INT
| GPIO_IN
);
46 sharpsl_pm_pxa_init();
49 static void corgi_measure_temp(int on
)
52 GPSR(CORGI_GPIO_ADC_TEMP_ON
) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON
);
54 GPCR(CORGI_GPIO_ADC_TEMP_ON
) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON
);
57 static void corgi_charge(int on
)
60 if (machine_is_corgi() && (sharpsl_pm
.flags
& SHARPSL_SUSPENDED
)) {
61 GPCR(CORGI_GPIO_CHRG_ON
) = GPIO_bit(CORGI_GPIO_CHRG_ON
);
62 GPSR(CORGI_GPIO_CHRG_UKN
) = GPIO_bit(CORGI_GPIO_CHRG_UKN
);
64 GPSR(CORGI_GPIO_CHRG_ON
) = GPIO_bit(CORGI_GPIO_CHRG_ON
);
65 GPCR(CORGI_GPIO_CHRG_UKN
) = GPIO_bit(CORGI_GPIO_CHRG_UKN
);
68 GPCR(CORGI_GPIO_CHRG_ON
) = GPIO_bit(CORGI_GPIO_CHRG_ON
);
69 GPCR(CORGI_GPIO_CHRG_UKN
) = GPIO_bit(CORGI_GPIO_CHRG_UKN
);
73 static void corgi_discharge(int on
)
76 GPSR(CORGI_GPIO_DISCHARGE_ON
) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON
);
78 GPCR(CORGI_GPIO_DISCHARGE_ON
) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON
);
81 static void corgi_presuspend(void)
84 unsigned long wakeup_mask
;
86 /* charging , so CHARGE_ON bit is HIGH during OFF. */
87 if (READ_GPIO_BIT(CORGI_GPIO_CHRG_ON
))
88 PGSR1
|= GPIO_bit(CORGI_GPIO_CHRG_ON
);
90 PGSR1
&= ~GPIO_bit(CORGI_GPIO_CHRG_ON
);
92 if (READ_GPIO_BIT(CORGI_GPIO_LED_ORANGE
))
93 PGSR0
|= GPIO_bit(CORGI_GPIO_LED_ORANGE
);
95 PGSR0
&= ~GPIO_bit(CORGI_GPIO_LED_ORANGE
);
97 if (READ_GPIO_BIT(CORGI_GPIO_CHRG_UKN
))
98 PGSR1
|= GPIO_bit(CORGI_GPIO_CHRG_UKN
);
100 PGSR1
&= ~GPIO_bit(CORGI_GPIO_CHRG_UKN
);
102 /* Resume on keyboard power key */
103 PGSR2
= (PGSR2
& ~CORGI_GPIO_ALL_STROBE_BIT
) | CORGI_GPIO_STROBE_BIT(0);
105 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
);
107 if (!machine_is_corgi())
108 wakeup_mask
|= GPIO_bit(CORGI_GPIO_MAIN_BAT_LOW
);
110 PWER
= wakeup_mask
| PWER_RTC
;
114 for (i
= 0; i
<=15; i
++) {
115 if (PRER
& PFER
& GPIO_bit(i
)) {
116 if (GPLR0
& GPIO_bit(i
) )
117 PRER
&= ~GPIO_bit(i
);
119 PFER
&= ~GPIO_bit(i
);
124 static void corgi_postsuspend(void)
129 * Check what brought us out of the suspend.
130 * Return: 0 to sleep, otherwise wake
132 static int corgi_should_wakeup(unsigned int resume_on_alarm
)
136 dev_dbg(sharpsl_pm
.dev
, "GPLR0 = %x,%x\n", GPLR0
, PEDR
);
138 if ((PEDR
& GPIO_bit(CORGI_GPIO_AC_IN
))) {
139 if (sharpsl_pm
.machinfo
->read_devdata(SHARPSL_STATUS_ACIN
)) {
141 dev_dbg(sharpsl_pm
.dev
, "ac insert\n");
142 sharpsl_pm
.flags
|= SHARPSL_DO_OFFLINE_CHRG
;
145 dev_dbg(sharpsl_pm
.dev
, "ac remove\n");
146 sharpsl_pm_led(SHARPSL_LED_OFF
);
147 sharpsl_pm
.machinfo
->charge(0);
148 sharpsl_pm
.charge_mode
= CHRG_OFF
;
152 if ((PEDR
& GPIO_bit(CORGI_GPIO_CHRG_FULL
)))
153 dev_dbg(sharpsl_pm
.dev
, "Charge full interrupt\n");
155 if (PEDR
& GPIO_bit(CORGI_GPIO_KEY_INT
))
156 is_resume
|= GPIO_bit(CORGI_GPIO_KEY_INT
);
158 if (PEDR
& GPIO_bit(CORGI_GPIO_WAKEUP
))
159 is_resume
|= GPIO_bit(CORGI_GPIO_WAKEUP
);
161 if (resume_on_alarm
&& (PEDR
& PWER_RTC
))
162 is_resume
|= PWER_RTC
;
164 dev_dbg(sharpsl_pm
.dev
, "is_resume: %x\n",is_resume
);
168 static unsigned long corgi_charger_wakeup(void)
170 return ~GPLR0
& ( GPIO_bit(CORGI_GPIO_AC_IN
) | GPIO_bit(CORGI_GPIO_KEY_INT
) | GPIO_bit(CORGI_GPIO_WAKEUP
) );
173 unsigned long corgipm_read_devdata(int type
)
176 case SHARPSL_STATUS_ACIN
:
177 return ((GPLR(CORGI_GPIO_AC_IN
) & GPIO_bit(CORGI_GPIO_AC_IN
)) != 0);
178 case SHARPSL_STATUS_LOCK
:
179 return READ_GPIO_BIT(sharpsl_pm
.machinfo
->gpio_batlock
);
180 case SHARPSL_STATUS_CHRGFULL
:
181 return READ_GPIO_BIT(sharpsl_pm
.machinfo
->gpio_batfull
);
182 case SHARPSL_STATUS_FATAL
:
183 return READ_GPIO_BIT(sharpsl_pm
.machinfo
->gpio_fatal
);
184 case SHARPSL_ACIN_VOLT
:
185 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT
);
186 case SHARPSL_BATT_TEMP
:
187 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP
);
188 case SHARPSL_BATT_VOLT
:
190 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT
);
194 static struct sharpsl_charger_machinfo corgi_pm_machinfo
= {
195 .init
= corgi_charger_init
,
196 .exit
= sharpsl_pm_pxa_remove
,
197 .gpio_batlock
= CORGI_GPIO_BAT_COVER
,
198 .gpio_acin
= CORGI_GPIO_AC_IN
,
199 .gpio_batfull
= CORGI_GPIO_CHRG_FULL
,
200 .discharge
= corgi_discharge
,
201 .charge
= corgi_charge
,
202 .measure_temp
= corgi_measure_temp
,
203 .presuspend
= corgi_presuspend
,
204 .postsuspend
= corgi_postsuspend
,
205 .read_devdata
= corgipm_read_devdata
,
206 .charger_wakeup
= corgi_charger_wakeup
,
207 .should_wakeup
= corgi_should_wakeup
,
208 #ifdef CONFIG_BACKLIGHT_CORGI
209 .backlight_limit
= corgibl_limit_intensity
,
211 .charge_on_volt
= SHARPSL_CHARGE_ON_VOLT
,
212 .charge_on_temp
= SHARPSL_CHARGE_ON_TEMP
,
213 .charge_acin_high
= SHARPSL_CHARGE_ON_ACIN_HIGH
,
214 .charge_acin_low
= SHARPSL_CHARGE_ON_ACIN_LOW
,
215 .fatal_acin_volt
= SHARPSL_FATAL_ACIN_VOLT
,
216 .fatal_noacin_volt
= SHARPSL_FATAL_NOACIN_VOLT
,
218 .bat_levels_noac
= spitz_battery_levels_noac
,
219 .bat_levels_acin
= spitz_battery_levels_acin
,
220 .status_high_acin
= 188,
221 .status_low_acin
= 178,
222 .status_high_noac
= 185,
223 .status_low_noac
= 175,
226 static struct platform_device
*corgipm_device
;
228 static int __devinit
corgipm_init(void)
232 if (!machine_is_corgi() && !machine_is_shepherd()
233 && !machine_is_husky())
236 corgipm_device
= platform_device_alloc("sharpsl-pm", -1);
240 if (!machine_is_corgi())
241 corgi_pm_machinfo
.batfull_irq
= 1;
243 corgipm_device
->dev
.platform_data
= &corgi_pm_machinfo
;
244 ret
= platform_device_add(corgipm_device
);
247 platform_device_put(corgipm_device
);
252 static void corgipm_exit(void)
254 platform_device_unregister(corgipm_device
);
257 module_init(corgipm_init
);
258 module_exit(corgipm_exit
);