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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
d72f25b0 RP |
2 | /* |
3 | * Battery and Power Management code for the Sharp SL-C7xx | |
4 | * | |
5 | * Copyright (c) 2005 Richard Purdie | |
d72f25b0 RP |
6 | */ |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <linux/stat.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/delay.h> | |
e63f591a | 13 | #include <linux/gpio.h> |
6f7c0471 | 14 | #include <linux/gpio-pxa.h> |
d72f25b0 RP |
15 | #include <linux/interrupt.h> |
16 | #include <linux/platform_device.h> | |
14fca61a | 17 | #include <linux/apm-emulation.h> |
23019a73 | 18 | #include <linux/io.h> |
14fca61a | 19 | |
d72f25b0 RP |
20 | #include <asm/irq.h> |
21 | #include <asm/mach-types.h> | |
a09e64fb | 22 | #include <mach/hardware.h> |
d72f25b0 | 23 | |
a09e64fb | 24 | #include <mach/corgi.h> |
a09e64fb | 25 | #include <mach/pxa2xx-regs.h> |
4c25c5d2 | 26 | #include "sharpsl_pm.h" |
e63f591a EM |
27 | |
28 | #include "generic.h" | |
d72f25b0 | 29 | |
f8703dc8 RP |
30 | #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ |
31 | #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ | |
32 | #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ | |
33 | #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ | |
34 | #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ | |
35 | #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ | |
36 | ||
e63f591a EM |
37 | static struct gpio charger_gpios[] = { |
38 | { CORGI_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" }, | |
39 | { CORGI_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" }, | |
40 | { CORGI_GPIO_CHRG_UKN, GPIOF_OUT_INIT_LOW, "Charger Unknown" }, | |
9bf448c6 | 41 | { CORGI_GPIO_AC_IN, GPIOF_IN, "Charger Detection" }, |
e63f591a | 42 | { CORGI_GPIO_KEY_INT, GPIOF_IN, "Key Interrupt" }, |
9bf448c6 | 43 | { CORGI_GPIO_WAKEUP, GPIOF_IN, "System wakeup notification" }, |
e63f591a EM |
44 | }; |
45 | ||
d72f25b0 RP |
46 | static void corgi_charger_init(void) |
47 | { | |
e63f591a | 48 | gpio_request_array(ARRAY_AND_SIZE(charger_gpios)); |
d72f25b0 RP |
49 | } |
50 | ||
51 | static void corgi_measure_temp(int on) | |
52 | { | |
e63f591a | 53 | gpio_set_value(CORGI_GPIO_ADC_TEMP_ON, on); |
d72f25b0 RP |
54 | } |
55 | ||
56 | static void corgi_charge(int on) | |
57 | { | |
58 | if (on) { | |
59 | if (machine_is_corgi() && (sharpsl_pm.flags & SHARPSL_SUSPENDED)) { | |
e63f591a EM |
60 | gpio_set_value(CORGI_GPIO_CHRG_ON, 0); |
61 | gpio_set_value(CORGI_GPIO_CHRG_UKN, 1); | |
d72f25b0 | 62 | } else { |
e63f591a EM |
63 | gpio_set_value(CORGI_GPIO_CHRG_ON, 1); |
64 | gpio_set_value(CORGI_GPIO_CHRG_UKN, 0); | |
d72f25b0 RP |
65 | } |
66 | } else { | |
e63f591a EM |
67 | gpio_set_value(CORGI_GPIO_CHRG_ON, 0); |
68 | gpio_set_value(CORGI_GPIO_CHRG_UKN, 0); | |
d72f25b0 RP |
69 | } |
70 | } | |
71 | ||
72 | static void corgi_discharge(int on) | |
73 | { | |
e63f591a | 74 | gpio_set_value(CORGI_GPIO_DISCHARGE_ON, on); |
d72f25b0 RP |
75 | } |
76 | ||
77 | static void corgi_presuspend(void) | |
78 | { | |
d72f25b0 RP |
79 | } |
80 | ||
81 | static void corgi_postsuspend(void) | |
82 | { | |
83 | } | |
84 | ||
85 | /* | |
86 | * Check what brought us out of the suspend. | |
87 | * Return: 0 to sleep, otherwise wake | |
88 | */ | |
89 | static int corgi_should_wakeup(unsigned int resume_on_alarm) | |
90 | { | |
91 | int is_resume = 0; | |
92 | ||
9bf448c6 HZ |
93 | dev_dbg(sharpsl_pm.dev, "PEDR = %x, GPIO_AC_IN = %d, " |
94 | "GPIO_CHRG_FULL = %d, GPIO_KEY_INT = %d, GPIO_WAKEUP = %d\n", | |
95 | PEDR, gpio_get_value(CORGI_GPIO_AC_IN), | |
96 | gpio_get_value(CORGI_GPIO_CHRG_FULL), | |
97 | gpio_get_value(CORGI_GPIO_KEY_INT), | |
98 | gpio_get_value(CORGI_GPIO_WAKEUP)); | |
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99 | |
100 | if ((PEDR & GPIO_bit(CORGI_GPIO_AC_IN))) { | |
b7557de4 | 101 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { |
d72f25b0 RP |
102 | /* charge on */ |
103 | dev_dbg(sharpsl_pm.dev, "ac insert\n"); | |
104 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
105 | } else { | |
106 | /* charge off */ | |
107 | dev_dbg(sharpsl_pm.dev, "ac remove\n"); | |
b7557de4 RP |
108 | sharpsl_pm_led(SHARPSL_LED_OFF); |
109 | sharpsl_pm.machinfo->charge(0); | |
d72f25b0 RP |
110 | sharpsl_pm.charge_mode = CHRG_OFF; |
111 | } | |
112 | } | |
113 | ||
114 | if ((PEDR & GPIO_bit(CORGI_GPIO_CHRG_FULL))) | |
115 | dev_dbg(sharpsl_pm.dev, "Charge full interrupt\n"); | |
116 | ||
117 | if (PEDR & GPIO_bit(CORGI_GPIO_KEY_INT)) | |
118 | is_resume |= GPIO_bit(CORGI_GPIO_KEY_INT); | |
119 | ||
120 | if (PEDR & GPIO_bit(CORGI_GPIO_WAKEUP)) | |
121 | is_resume |= GPIO_bit(CORGI_GPIO_WAKEUP); | |
122 | ||
123 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
124 | is_resume |= PWER_RTC; | |
125 | ||
126 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); | |
127 | return is_resume; | |
128 | } | |
129 | ||
ca26475b | 130 | static bool corgi_charger_wakeup(void) |
d72f25b0 | 131 | { |
ca26475b RJ |
132 | return !gpio_get_value(CORGI_GPIO_AC_IN) || |
133 | !gpio_get_value(CORGI_GPIO_KEY_INT) || | |
134 | !gpio_get_value(CORGI_GPIO_WAKEUP); | |
d72f25b0 RP |
135 | } |
136 | ||
b7557de4 | 137 | unsigned long corgipm_read_devdata(int type) |
d72f25b0 | 138 | { |
b7557de4 RP |
139 | switch(type) { |
140 | case SHARPSL_STATUS_ACIN: | |
9bf448c6 | 141 | return !gpio_get_value(CORGI_GPIO_AC_IN); |
b7557de4 | 142 | case SHARPSL_STATUS_LOCK: |
05732d7e | 143 | return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock); |
b7557de4 | 144 | case SHARPSL_STATUS_CHRGFULL: |
05732d7e | 145 | return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull); |
b7557de4 | 146 | case SHARPSL_STATUS_FATAL: |
05732d7e | 147 | return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal); |
b7557de4 RP |
148 | case SHARPSL_ACIN_VOLT: |
149 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); | |
150 | case SHARPSL_BATT_TEMP: | |
151 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); | |
152 | case SHARPSL_BATT_VOLT: | |
153 | default: | |
154 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); | |
155 | } | |
d72f25b0 RP |
156 | } |
157 | ||
158 | static struct sharpsl_charger_machinfo corgi_pm_machinfo = { | |
159 | .init = corgi_charger_init, | |
d48898a3 | 160 | .exit = NULL, |
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161 | .gpio_batlock = CORGI_GPIO_BAT_COVER, |
162 | .gpio_acin = CORGI_GPIO_AC_IN, | |
163 | .gpio_batfull = CORGI_GPIO_CHRG_FULL, | |
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164 | .discharge = corgi_discharge, |
165 | .charge = corgi_charge, | |
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166 | .measure_temp = corgi_measure_temp, |
167 | .presuspend = corgi_presuspend, | |
168 | .postsuspend = corgi_postsuspend, | |
b7557de4 | 169 | .read_devdata = corgipm_read_devdata, |
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170 | .charger_wakeup = corgi_charger_wakeup, |
171 | .should_wakeup = corgi_should_wakeup, | |
5cbff960 DB |
172 | #if defined(CONFIG_LCD_CORGI) |
173 | .backlight_limit = corgi_lcd_limit_intensity, | |
02a8e769 | 174 | #endif |
f8703dc8 RP |
175 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
176 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
177 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
178 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
179 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
180 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
181 | .bat_levels = 40, | |
0ba01ebc PM |
182 | .bat_levels_noac = sharpsl_battery_levels_noac, |
183 | .bat_levels_acin = sharpsl_battery_levels_acin, | |
d72f25b0 RP |
184 | .status_high_acin = 188, |
185 | .status_low_acin = 178, | |
186 | .status_high_noac = 185, | |
187 | .status_low_noac = 175, | |
188 | }; | |
189 | ||
190 | static struct platform_device *corgipm_device; | |
191 | ||
351a102d | 192 | static int corgipm_init(void) |
d72f25b0 RP |
193 | { |
194 | int ret; | |
195 | ||
043fbc09 DB |
196 | if (!machine_is_corgi() && !machine_is_shepherd() |
197 | && !machine_is_husky()) | |
198 | return -ENODEV; | |
199 | ||
d72f25b0 RP |
200 | corgipm_device = platform_device_alloc("sharpsl-pm", -1); |
201 | if (!corgipm_device) | |
202 | return -ENOMEM; | |
203 | ||
f8703dc8 RP |
204 | if (!machine_is_corgi()) |
205 | corgi_pm_machinfo.batfull_irq = 1; | |
206 | ||
d72f25b0 RP |
207 | corgipm_device->dev.platform_data = &corgi_pm_machinfo; |
208 | ret = platform_device_add(corgipm_device); | |
209 | ||
210 | if (ret) | |
211 | platform_device_put(corgipm_device); | |
212 | ||
213 | return ret; | |
214 | } | |
215 | ||
216 | static void corgipm_exit(void) | |
217 | { | |
218 | platform_device_unregister(corgipm_device); | |
219 | } | |
220 | ||
221 | module_init(corgipm_init); | |
222 | module_exit(corgipm_exit); |