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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> | |
a09e64fb | 23 | #include <mach/hardware.h> |
e8b6f7f4 | 24 | |
a09e64fb RK |
25 | #include <mach/sharpsl.h> |
26 | #include <mach/spitz.h> | |
a09e64fb RK |
27 | #include <mach/pxa2xx-regs.h> |
28 | #include <mach/pxa2xx-gpio.h> | |
e8b6f7f4 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 | ||
e8b6f7f4 RP |
38 | static int spitz_last_ac_status; |
39 | ||
40 | static void spitz_charger_init(void) | |
41 | { | |
42 | pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); | |
43 | pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); | |
e8b6f7f4 RP |
44 | } |
45 | ||
46 | static void spitz_measure_temp(int on) | |
47 | { | |
fff14720 | 48 | gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on); |
e8b6f7f4 RP |
49 | } |
50 | ||
51 | static void spitz_charge(int on) | |
52 | { | |
53 | if (on) { | |
54 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { | |
fff14720 EM |
55 | gpio_set_value(SPITZ_GPIO_JK_B, 1); |
56 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); | |
e8b6f7f4 | 57 | } else { |
fff14720 EM |
58 | gpio_set_value(SPITZ_GPIO_JK_B, 0); |
59 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); | |
e8b6f7f4 RP |
60 | } |
61 | } else { | |
fff14720 EM |
62 | gpio_set_value(SPITZ_GPIO_JK_B, 0); |
63 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 1); | |
e8b6f7f4 RP |
64 | } |
65 | } | |
66 | ||
67 | static void spitz_discharge(int on) | |
68 | { | |
fff14720 | 69 | gpio_set_value(SPITZ_GPIO_JK_A, on); |
e8b6f7f4 RP |
70 | } |
71 | ||
72 | /* HACK - For unknown reasons, accurate voltage readings are only made with a load | |
73 | on the power bus which the green led on spitz provides */ | |
74 | static void spitz_discharge1(int on) | |
75 | { | |
fff14720 | 76 | gpio_set_value(SPITZ_GPIO_LED_GREEN, on); |
e8b6f7f4 RP |
77 | } |
78 | ||
79 | static void spitz_presuspend(void) | |
80 | { | |
b7557de4 | 81 | spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
82 | |
83 | /* GPIO Sleep Register */ | |
84 | PGSR0 = 0x00144018; | |
85 | PGSR1 = 0x00EF0000; | |
86 | if (machine_is_akita()) { | |
87 | PGSR2 = 0x2121C000; | |
88 | PGSR3 = 0x00600400; | |
89 | } else { | |
90 | PGSR2 = 0x0121C000; | |
91 | PGSR3 = 0x00600000; | |
92 | } | |
93 | ||
94 | PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; | |
95 | PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; | |
96 | PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; | |
97 | PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; | |
98 | PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); | |
99 | ||
100 | pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); | |
101 | ||
102 | PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); | |
103 | PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
104 | PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; | |
105 | PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
b64b0b76 | 106 | PKSR = 0xffffffff; /* clear */ |
e8b6f7f4 RP |
107 | |
108 | /* nRESET_OUT Disable */ | |
109 | PSLR |= PSLR_SL_ROD; | |
110 | ||
e8b6f7f4 RP |
111 | /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ |
112 | PCFR = PCFR_GPR_EN | PCFR_OPDE; | |
113 | } | |
114 | ||
115 | static void spitz_postsuspend(void) | |
116 | { | |
117 | pxa_gpio_mode(GPIO18_RDY_MD); | |
118 | pxa_gpio_mode(10 | GPIO_IN); | |
119 | } | |
120 | ||
121 | static int spitz_should_wakeup(unsigned int resume_on_alarm) | |
122 | { | |
123 | int is_resume = 0; | |
b7557de4 | 124 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
125 | |
126 | if (spitz_last_ac_status != acin) { | |
127 | if (acin) { | |
128 | /* charge on */ | |
129 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
130 | dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); | |
131 | } else { | |
132 | /* charge off */ | |
133 | dev_dbg(sharpsl_pm.dev, "AC Removed\n"); | |
b7557de4 RP |
134 | sharpsl_pm_led(SHARPSL_LED_OFF); |
135 | sharpsl_pm.machinfo->charge(0); | |
e8b6f7f4 RP |
136 | sharpsl_pm.charge_mode = CHRG_OFF; |
137 | } | |
138 | spitz_last_ac_status = acin; | |
139 | /* Return to suspend as this must be what we were woken for */ | |
140 | return 0; | |
141 | } | |
142 | ||
143 | if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) | |
144 | is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); | |
145 | ||
146 | if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) | |
147 | is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); | |
148 | ||
149 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
150 | is_resume |= PWER_RTC; | |
151 | ||
b64b0b76 | 152 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume); |
e8b6f7f4 RP |
153 | return is_resume; |
154 | } | |
155 | ||
156 | static unsigned long spitz_charger_wakeup(void) | |
157 | { | |
158 | return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); | |
159 | } | |
160 | ||
b7557de4 | 161 | unsigned long spitzpm_read_devdata(int type) |
e8b6f7f4 | 162 | { |
b64b0b76 | 163 | switch (type) { |
b7557de4 RP |
164 | case SHARPSL_STATUS_ACIN: |
165 | return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); | |
166 | case SHARPSL_STATUS_LOCK: | |
167 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock); | |
168 | case SHARPSL_STATUS_CHRGFULL: | |
169 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull); | |
170 | case SHARPSL_STATUS_FATAL: | |
171 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal); | |
172 | case SHARPSL_ACIN_VOLT: | |
173 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); | |
174 | case SHARPSL_BATT_TEMP: | |
175 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); | |
176 | case SHARPSL_BATT_VOLT: | |
177 | default: | |
178 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); | |
179 | } | |
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180 | } |
181 | ||
182 | struct sharpsl_charger_machinfo spitz_pm_machinfo = { | |
183 | .init = spitz_charger_init, | |
d48898a3 | 184 | .exit = NULL, |
e8b6f7f4 RP |
185 | .gpio_batlock = SPITZ_GPIO_BAT_COVER, |
186 | .gpio_acin = SPITZ_GPIO_AC_IN, | |
187 | .gpio_batfull = SPITZ_GPIO_CHRG_FULL, | |
f8703dc8 | 188 | .batfull_irq = 1, |
e8b6f7f4 | 189 | .gpio_fatal = SPITZ_GPIO_FATAL_BAT, |
e8b6f7f4 RP |
190 | .discharge = spitz_discharge, |
191 | .discharge1 = spitz_discharge1, | |
192 | .charge = spitz_charge, | |
e8b6f7f4 RP |
193 | .measure_temp = spitz_measure_temp, |
194 | .presuspend = spitz_presuspend, | |
195 | .postsuspend = spitz_postsuspend, | |
b7557de4 | 196 | .read_devdata = spitzpm_read_devdata, |
e8b6f7f4 RP |
197 | .charger_wakeup = spitz_charger_wakeup, |
198 | .should_wakeup = spitz_should_wakeup, | |
5cbff960 DB |
199 | #if defined(CONFIG_LCD_CORGI) |
200 | .backlight_limit = corgi_lcd_limit_intensity, | |
201 | #elif defined(CONFIG_BACKLIGHT_CORGI) | |
b64b0b76 | 202 | .backlight_limit = corgibl_limit_intensity, |
02a8e769 | 203 | #endif |
f8703dc8 RP |
204 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
205 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
206 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
207 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
208 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
209 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
e8b6f7f4 | 210 | .bat_levels = 40, |
0ba01ebc PM |
211 | .bat_levels_noac = sharpsl_battery_levels_noac, |
212 | .bat_levels_acin = sharpsl_battery_levels_acin, | |
e8b6f7f4 RP |
213 | .status_high_acin = 188, |
214 | .status_low_acin = 178, | |
215 | .status_high_noac = 185, | |
216 | .status_low_noac = 175, | |
217 | }; | |
218 | ||
219 | static struct platform_device *spitzpm_device; | |
220 | ||
221 | static int __devinit spitzpm_init(void) | |
222 | { | |
223 | int ret; | |
224 | ||
5806d8ab DB |
225 | if (!machine_is_spitz() && !machine_is_akita() |
226 | && !machine_is_borzoi()) | |
227 | return -ENODEV; | |
228 | ||
e8b6f7f4 RP |
229 | spitzpm_device = platform_device_alloc("sharpsl-pm", -1); |
230 | if (!spitzpm_device) | |
231 | return -ENOMEM; | |
232 | ||
233 | spitzpm_device->dev.platform_data = &spitz_pm_machinfo; | |
234 | ret = platform_device_add(spitzpm_device); | |
235 | ||
236 | if (ret) | |
237 | platform_device_put(spitzpm_device); | |
238 | ||
239 | return ret; | |
240 | } | |
241 | ||
242 | static void spitzpm_exit(void) | |
243 | { | |
b64b0b76 | 244 | platform_device_unregister(spitzpm_device); |
e8b6f7f4 RP |
245 | } |
246 | ||
247 | module_init(spitzpm_init); | |
248 | module_exit(spitzpm_exit); |