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d72f25b0 RP |
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> | |
14fca61a RK |
19 | #include <linux/apm-emulation.h> |
20 | ||
d72f25b0 RP |
21 | #include <asm/irq.h> |
22 | #include <asm/mach-types.h> | |
a09e64fb | 23 | #include <mach/hardware.h> |
d72f25b0 | 24 | |
a09e64fb RK |
25 | #include <mach/sharpsl.h> |
26 | #include <mach/corgi.h> | |
a09e64fb RK |
27 | #include <mach/pxa2xx-regs.h> |
28 | #include <mach/pxa2xx-gpio.h> | |
d72f25b0 RP |
29 | #include "sharpsl.h" |
30 | ||
f8703dc8 RP |
31 | #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ |
32 | #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ | |
33 | #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ | |
34 | #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ | |
35 | #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ | |
36 | #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ | |
37 | ||
d72f25b0 RP |
38 | static void corgi_charger_init(void) |
39 | { | |
40 | pxa_gpio_mode(CORGI_GPIO_ADC_TEMP_ON | GPIO_OUT); | |
41 | pxa_gpio_mode(CORGI_GPIO_CHRG_ON | GPIO_OUT); | |
42 | pxa_gpio_mode(CORGI_GPIO_CHRG_UKN | GPIO_OUT); | |
43 | pxa_gpio_mode(CORGI_GPIO_KEY_INT | GPIO_IN); | |
d72f25b0 RP |
44 | } |
45 | ||
46 | static void corgi_measure_temp(int on) | |
47 | { | |
48 | if (on) | |
49 | GPSR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON); | |
50 | else | |
51 | GPCR(CORGI_GPIO_ADC_TEMP_ON) = GPIO_bit(CORGI_GPIO_ADC_TEMP_ON); | |
52 | } | |
53 | ||
54 | static void corgi_charge(int on) | |
55 | { | |
56 | if (on) { | |
57 | if (machine_is_corgi() && (sharpsl_pm.flags & SHARPSL_SUSPENDED)) { | |
58 | GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON); | |
59 | GPSR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN); | |
60 | } else { | |
61 | GPSR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON); | |
62 | GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN); | |
63 | } | |
64 | } else { | |
65 | GPCR(CORGI_GPIO_CHRG_ON) = GPIO_bit(CORGI_GPIO_CHRG_ON); | |
66 | GPCR(CORGI_GPIO_CHRG_UKN) = GPIO_bit(CORGI_GPIO_CHRG_UKN); | |
67 | } | |
68 | } | |
69 | ||
70 | static void corgi_discharge(int on) | |
71 | { | |
72 | if (on) | |
73 | GPSR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON); | |
74 | else | |
75 | GPCR(CORGI_GPIO_DISCHARGE_ON) = GPIO_bit(CORGI_GPIO_DISCHARGE_ON); | |
76 | } | |
77 | ||
78 | static void corgi_presuspend(void) | |
79 | { | |
80 | int i; | |
81 | unsigned long wakeup_mask; | |
82 | ||
83 | /* charging , so CHARGE_ON bit is HIGH during OFF. */ | |
84 | if (READ_GPIO_BIT(CORGI_GPIO_CHRG_ON)) | |
85 | PGSR1 |= GPIO_bit(CORGI_GPIO_CHRG_ON); | |
86 | else | |
87 | PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_ON); | |
88 | ||
89 | if (READ_GPIO_BIT(CORGI_GPIO_LED_ORANGE)) | |
90 | PGSR0 |= GPIO_bit(CORGI_GPIO_LED_ORANGE); | |
91 | else | |
92 | PGSR0 &= ~GPIO_bit(CORGI_GPIO_LED_ORANGE); | |
93 | ||
94 | if (READ_GPIO_BIT(CORGI_GPIO_CHRG_UKN)) | |
95 | PGSR1 |= GPIO_bit(CORGI_GPIO_CHRG_UKN); | |
96 | else | |
97 | PGSR1 &= ~GPIO_bit(CORGI_GPIO_CHRG_UKN); | |
98 | ||
99 | /* Resume on keyboard power key */ | |
100 | PGSR2 = (PGSR2 & ~CORGI_GPIO_ALL_STROBE_BIT) | CORGI_GPIO_STROBE_BIT(0); | |
101 | ||
102 | 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); | |
103 | ||
104 | if (!machine_is_corgi()) | |
105 | wakeup_mask |= GPIO_bit(CORGI_GPIO_MAIN_BAT_LOW); | |
106 | ||
107 | PWER = wakeup_mask | PWER_RTC; | |
108 | PRER = wakeup_mask; | |
109 | PFER = wakeup_mask; | |
110 | ||
111 | for (i = 0; i <=15; i++) { | |
112 | if (PRER & PFER & GPIO_bit(i)) { | |
113 | if (GPLR0 & GPIO_bit(i) ) | |
114 | PRER &= ~GPIO_bit(i); | |
115 | else | |
116 | PFER &= ~GPIO_bit(i); | |
117 | } | |
118 | } | |
119 | } | |
120 | ||
121 | static void corgi_postsuspend(void) | |
122 | { | |
123 | } | |
124 | ||
125 | /* | |
126 | * Check what brought us out of the suspend. | |
127 | * Return: 0 to sleep, otherwise wake | |
128 | */ | |
129 | static int corgi_should_wakeup(unsigned int resume_on_alarm) | |
130 | { | |
131 | int is_resume = 0; | |
132 | ||
133 | dev_dbg(sharpsl_pm.dev, "GPLR0 = %x,%x\n", GPLR0, PEDR); | |
134 | ||
135 | if ((PEDR & GPIO_bit(CORGI_GPIO_AC_IN))) { | |
b7557de4 | 136 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { |
d72f25b0 RP |
137 | /* charge on */ |
138 | dev_dbg(sharpsl_pm.dev, "ac insert\n"); | |
139 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
140 | } else { | |
141 | /* charge off */ | |
142 | dev_dbg(sharpsl_pm.dev, "ac remove\n"); | |
b7557de4 RP |
143 | sharpsl_pm_led(SHARPSL_LED_OFF); |
144 | sharpsl_pm.machinfo->charge(0); | |
d72f25b0 RP |
145 | sharpsl_pm.charge_mode = CHRG_OFF; |
146 | } | |
147 | } | |
148 | ||
149 | if ((PEDR & GPIO_bit(CORGI_GPIO_CHRG_FULL))) | |
150 | dev_dbg(sharpsl_pm.dev, "Charge full interrupt\n"); | |
151 | ||
152 | if (PEDR & GPIO_bit(CORGI_GPIO_KEY_INT)) | |
153 | is_resume |= GPIO_bit(CORGI_GPIO_KEY_INT); | |
154 | ||
155 | if (PEDR & GPIO_bit(CORGI_GPIO_WAKEUP)) | |
156 | is_resume |= GPIO_bit(CORGI_GPIO_WAKEUP); | |
157 | ||
158 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
159 | is_resume |= PWER_RTC; | |
160 | ||
161 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); | |
162 | return is_resume; | |
163 | } | |
164 | ||
165 | static unsigned long corgi_charger_wakeup(void) | |
166 | { | |
167 | return ~GPLR0 & ( GPIO_bit(CORGI_GPIO_AC_IN) | GPIO_bit(CORGI_GPIO_KEY_INT) | GPIO_bit(CORGI_GPIO_WAKEUP) ); | |
168 | } | |
169 | ||
b7557de4 | 170 | unsigned long corgipm_read_devdata(int type) |
d72f25b0 | 171 | { |
b7557de4 RP |
172 | switch(type) { |
173 | case SHARPSL_STATUS_ACIN: | |
174 | return ((GPLR(CORGI_GPIO_AC_IN) & GPIO_bit(CORGI_GPIO_AC_IN)) != 0); | |
175 | case SHARPSL_STATUS_LOCK: | |
176 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock); | |
177 | case SHARPSL_STATUS_CHRGFULL: | |
178 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull); | |
179 | case SHARPSL_STATUS_FATAL: | |
180 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal); | |
181 | case SHARPSL_ACIN_VOLT: | |
182 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); | |
183 | case SHARPSL_BATT_TEMP: | |
184 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); | |
185 | case SHARPSL_BATT_VOLT: | |
186 | default: | |
187 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); | |
188 | } | |
d72f25b0 RP |
189 | } |
190 | ||
191 | static struct sharpsl_charger_machinfo corgi_pm_machinfo = { | |
192 | .init = corgi_charger_init, | |
d48898a3 | 193 | .exit = NULL, |
d72f25b0 RP |
194 | .gpio_batlock = CORGI_GPIO_BAT_COVER, |
195 | .gpio_acin = CORGI_GPIO_AC_IN, | |
196 | .gpio_batfull = CORGI_GPIO_CHRG_FULL, | |
d72f25b0 RP |
197 | .discharge = corgi_discharge, |
198 | .charge = corgi_charge, | |
d72f25b0 RP |
199 | .measure_temp = corgi_measure_temp, |
200 | .presuspend = corgi_presuspend, | |
201 | .postsuspend = corgi_postsuspend, | |
b7557de4 | 202 | .read_devdata = corgipm_read_devdata, |
d72f25b0 RP |
203 | .charger_wakeup = corgi_charger_wakeup, |
204 | .should_wakeup = corgi_should_wakeup, | |
5cbff960 DB |
205 | #if defined(CONFIG_LCD_CORGI) |
206 | .backlight_limit = corgi_lcd_limit_intensity, | |
207 | #elif defined(CONFIG_BACKLIGHT_CORGI) | |
f8703dc8 | 208 | .backlight_limit = corgibl_limit_intensity, |
02a8e769 | 209 | #endif |
f8703dc8 RP |
210 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
211 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
212 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
213 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
214 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
215 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
216 | .bat_levels = 40, | |
217 | .bat_levels_noac = spitz_battery_levels_noac, | |
218 | .bat_levels_acin = spitz_battery_levels_acin, | |
d72f25b0 RP |
219 | .status_high_acin = 188, |
220 | .status_low_acin = 178, | |
221 | .status_high_noac = 185, | |
222 | .status_low_noac = 175, | |
223 | }; | |
224 | ||
225 | static struct platform_device *corgipm_device; | |
226 | ||
227 | static int __devinit corgipm_init(void) | |
228 | { | |
229 | int ret; | |
230 | ||
043fbc09 DB |
231 | if (!machine_is_corgi() && !machine_is_shepherd() |
232 | && !machine_is_husky()) | |
233 | return -ENODEV; | |
234 | ||
d72f25b0 RP |
235 | corgipm_device = platform_device_alloc("sharpsl-pm", -1); |
236 | if (!corgipm_device) | |
237 | return -ENOMEM; | |
238 | ||
f8703dc8 RP |
239 | if (!machine_is_corgi()) |
240 | corgi_pm_machinfo.batfull_irq = 1; | |
241 | ||
d72f25b0 RP |
242 | corgipm_device->dev.platform_data = &corgi_pm_machinfo; |
243 | ret = platform_device_add(corgipm_device); | |
244 | ||
245 | if (ret) | |
246 | platform_device_put(corgipm_device); | |
247 | ||
248 | return ret; | |
249 | } | |
250 | ||
251 | static void corgipm_exit(void) | |
252 | { | |
253 | platform_device_unregister(corgipm_device); | |
254 | } | |
255 | ||
256 | module_init(corgipm_init); | |
257 | module_exit(corgipm_exit); |