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e8b6f7f4 RP |
1 | /* |
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> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/platform_device.h> | |
14fca61a RK |
19 | #include <linux/apm-emulation.h> |
20 | ||
e8b6f7f4 RP |
21 | #include <asm/irq.h> |
22 | #include <asm/mach-types.h> | |
23 | #include <asm/hardware.h> | |
24 | #include <asm/hardware/scoop.h> | |
25 | ||
26 | #include <asm/arch/sharpsl.h> | |
27 | #include <asm/arch/spitz.h> | |
28 | #include <asm/arch/pxa-regs.h> | |
a683b14d | 29 | #include <asm/arch/pxa2xx-gpio.h> |
e8b6f7f4 RP |
30 | #include "sharpsl.h" |
31 | ||
f8703dc8 RP |
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 | ||
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39 | static int spitz_last_ac_status; |
40 | ||
41 | static void spitz_charger_init(void) | |
42 | { | |
43 | pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); | |
44 | pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); | |
b7557de4 | 45 | sharpsl_pm_pxa_init(); |
e8b6f7f4 RP |
46 | } |
47 | ||
48 | static void spitz_measure_temp(int on) | |
49 | { | |
50 | if (on) | |
51 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); | |
52 | else | |
53 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); | |
54 | } | |
55 | ||
56 | static void spitz_charge(int on) | |
57 | { | |
58 | if (on) { | |
59 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { | |
60 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
61 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
62 | } else { | |
63 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
64 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
65 | } | |
66 | } else { | |
67 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
68 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
69 | } | |
70 | } | |
71 | ||
72 | static void spitz_discharge(int on) | |
73 | { | |
74 | if (on) | |
75 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); | |
76 | else | |
77 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); | |
78 | } | |
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 */ | |
82 | static void spitz_discharge1(int on) | |
83 | { | |
84 | if (on) | |
85 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); | |
86 | else | |
87 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); | |
88 | } | |
89 | ||
90 | static void spitz_presuspend(void) | |
91 | { | |
b7557de4 | 92 | spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
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93 | |
94 | /* GPIO Sleep Register */ | |
95 | PGSR0 = 0x00144018; | |
96 | PGSR1 = 0x00EF0000; | |
97 | if (machine_is_akita()) { | |
98 | PGSR2 = 0x2121C000; | |
99 | PGSR3 = 0x00600400; | |
100 | } else { | |
101 | PGSR2 = 0x0121C000; | |
102 | PGSR3 = 0x00600000; | |
103 | } | |
104 | ||
105 | PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; | |
106 | PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; | |
107 | PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; | |
108 | PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; | |
109 | PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); | |
110 | ||
111 | pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); | |
112 | ||
113 | PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); | |
114 | PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
115 | PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; | |
116 | PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
117 | PKSR = 0xffffffff; // clear | |
118 | ||
119 | /* nRESET_OUT Disable */ | |
120 | PSLR |= PSLR_SL_ROD; | |
121 | ||
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122 | /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ |
123 | PCFR = PCFR_GPR_EN | PCFR_OPDE; | |
124 | } | |
125 | ||
126 | static void spitz_postsuspend(void) | |
127 | { | |
128 | pxa_gpio_mode(GPIO18_RDY_MD); | |
129 | pxa_gpio_mode(10 | GPIO_IN); | |
130 | } | |
131 | ||
132 | static int spitz_should_wakeup(unsigned int resume_on_alarm) | |
133 | { | |
134 | int is_resume = 0; | |
b7557de4 | 135 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
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136 | |
137 | if (spitz_last_ac_status != acin) { | |
138 | if (acin) { | |
139 | /* charge on */ | |
140 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
141 | dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); | |
142 | } else { | |
143 | /* charge off */ | |
144 | dev_dbg(sharpsl_pm.dev, "AC Removed\n"); | |
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145 | sharpsl_pm_led(SHARPSL_LED_OFF); |
146 | sharpsl_pm.machinfo->charge(0); | |
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147 | sharpsl_pm.charge_mode = CHRG_OFF; |
148 | } | |
149 | spitz_last_ac_status = acin; | |
150 | /* Return to suspend as this must be what we were woken for */ | |
151 | return 0; | |
152 | } | |
153 | ||
154 | if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) | |
155 | is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); | |
156 | ||
157 | if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) | |
158 | is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); | |
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 spitz_charger_wakeup(void) | |
168 | { | |
169 | return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); | |
170 | } | |
171 | ||
b7557de4 | 172 | unsigned long spitzpm_read_devdata(int type) |
e8b6f7f4 | 173 | { |
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174 | switch(type) { |
175 | case SHARPSL_STATUS_ACIN: | |
176 | return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_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 | } | |
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191 | } |
192 | ||
193 | struct sharpsl_charger_machinfo spitz_pm_machinfo = { | |
194 | .init = spitz_charger_init, | |
b7557de4 | 195 | .exit = sharpsl_pm_pxa_remove, |
e8b6f7f4 RP |
196 | .gpio_batlock = SPITZ_GPIO_BAT_COVER, |
197 | .gpio_acin = SPITZ_GPIO_AC_IN, | |
198 | .gpio_batfull = SPITZ_GPIO_CHRG_FULL, | |
f8703dc8 | 199 | .batfull_irq = 1, |
e8b6f7f4 | 200 | .gpio_fatal = SPITZ_GPIO_FATAL_BAT, |
e8b6f7f4 RP |
201 | .discharge = spitz_discharge, |
202 | .discharge1 = spitz_discharge1, | |
203 | .charge = spitz_charge, | |
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204 | .measure_temp = spitz_measure_temp, |
205 | .presuspend = spitz_presuspend, | |
206 | .postsuspend = spitz_postsuspend, | |
b7557de4 | 207 | .read_devdata = spitzpm_read_devdata, |
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208 | .charger_wakeup = spitz_charger_wakeup, |
209 | .should_wakeup = spitz_should_wakeup, | |
02a8e769 | 210 | #ifdef CONFIG_BACKLIGHT_CORGI |
f8703dc8 | 211 | .backlight_limit = corgibl_limit_intensity, |
02a8e769 | 212 | #endif |
f8703dc8 RP |
213 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
214 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
215 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
216 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
217 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
218 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
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219 | .bat_levels = 40, |
220 | .bat_levels_noac = spitz_battery_levels_noac, | |
221 | .bat_levels_acin = spitz_battery_levels_acin, | |
222 | .status_high_acin = 188, | |
223 | .status_low_acin = 178, | |
224 | .status_high_noac = 185, | |
225 | .status_low_noac = 175, | |
226 | }; | |
227 | ||
228 | static struct platform_device *spitzpm_device; | |
229 | ||
230 | static int __devinit spitzpm_init(void) | |
231 | { | |
232 | int ret; | |
233 | ||
234 | spitzpm_device = platform_device_alloc("sharpsl-pm", -1); | |
235 | if (!spitzpm_device) | |
236 | return -ENOMEM; | |
237 | ||
238 | spitzpm_device->dev.platform_data = &spitz_pm_machinfo; | |
239 | ret = platform_device_add(spitzpm_device); | |
240 | ||
241 | if (ret) | |
242 | platform_device_put(spitzpm_device); | |
243 | ||
244 | return ret; | |
245 | } | |
246 | ||
247 | static void spitzpm_exit(void) | |
248 | { | |
249 | platform_device_unregister(spitzpm_device); | |
250 | } | |
251 | ||
252 | module_init(spitzpm_init); | |
253 | module_exit(spitzpm_exit); |