Commit | Line | Data |
---|---|---|
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> | |
158f1e95 | 17 | #include <linux/gpio.h> |
e8b6f7f4 RP |
18 | #include <linux/interrupt.h> |
19 | #include <linux/platform_device.h> | |
14fca61a RK |
20 | #include <linux/apm-emulation.h> |
21 | ||
e8b6f7f4 RP |
22 | #include <asm/irq.h> |
23 | #include <asm/mach-types.h> | |
a09e64fb | 24 | #include <mach/hardware.h> |
e8b6f7f4 | 25 | |
a09e64fb | 26 | #include <mach/spitz.h> |
b6eede11 | 27 | #include <mach/pxa27x.h> |
04e4ad23 | 28 | #include <mach/sharpsl_pm.h> |
b6eede11 | 29 | |
b6eede11 | 30 | #include "generic.h" |
e8b6f7f4 | 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 | ||
e8b6f7f4 RP |
39 | static int spitz_last_ac_status; |
40 | ||
b6eede11 EM |
41 | static struct gpio spitz_charger_gpios[] = { |
42 | { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" }, | |
43 | { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" }, | |
44 | { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" }, | |
45 | { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" }, | |
46 | { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" }, | |
47 | }; | |
48 | ||
e8b6f7f4 RP |
49 | static void spitz_charger_init(void) |
50 | { | |
b6eede11 | 51 | gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios)); |
e8b6f7f4 RP |
52 | } |
53 | ||
54 | static void spitz_measure_temp(int on) | |
55 | { | |
fff14720 | 56 | gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on); |
e8b6f7f4 RP |
57 | } |
58 | ||
59 | static void spitz_charge(int on) | |
60 | { | |
61 | if (on) { | |
62 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { | |
fff14720 EM |
63 | gpio_set_value(SPITZ_GPIO_JK_B, 1); |
64 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); | |
e8b6f7f4 | 65 | } else { |
fff14720 EM |
66 | gpio_set_value(SPITZ_GPIO_JK_B, 0); |
67 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); | |
e8b6f7f4 RP |
68 | } |
69 | } else { | |
fff14720 EM |
70 | gpio_set_value(SPITZ_GPIO_JK_B, 0); |
71 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 1); | |
e8b6f7f4 RP |
72 | } |
73 | } | |
74 | ||
75 | static void spitz_discharge(int on) | |
76 | { | |
fff14720 | 77 | gpio_set_value(SPITZ_GPIO_JK_A, on); |
e8b6f7f4 RP |
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 | { | |
fff14720 | 84 | gpio_set_value(SPITZ_GPIO_LED_GREEN, on); |
e8b6f7f4 RP |
85 | } |
86 | ||
b6eede11 EM |
87 | static unsigned long gpio18_config[] = { |
88 | GPIO18_RDY, | |
89 | GPIO18_GPIO, | |
90 | }; | |
91 | ||
e8b6f7f4 RP |
92 | static void spitz_presuspend(void) |
93 | { | |
b7557de4 | 94 | spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
95 | |
96 | /* GPIO Sleep Register */ | |
97 | PGSR0 = 0x00144018; | |
98 | PGSR1 = 0x00EF0000; | |
99 | if (machine_is_akita()) { | |
100 | PGSR2 = 0x2121C000; | |
101 | PGSR3 = 0x00600400; | |
102 | } else { | |
103 | PGSR2 = 0x0121C000; | |
104 | PGSR3 = 0x00600000; | |
105 | } | |
106 | ||
107 | PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; | |
108 | PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; | |
109 | PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; | |
110 | PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; | |
111 | PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); | |
112 | ||
b6eede11 EM |
113 | pxa2xx_mfp_config(&gpio18_config[0], 1); |
114 | gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown"); | |
115 | gpio_free(18); | |
e8b6f7f4 RP |
116 | |
117 | PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); | |
118 | PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
119 | PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; | |
120 | PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
b64b0b76 | 121 | PKSR = 0xffffffff; /* clear */ |
e8b6f7f4 RP |
122 | |
123 | /* nRESET_OUT Disable */ | |
124 | PSLR |= PSLR_SL_ROD; | |
125 | ||
e8b6f7f4 RP |
126 | /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ |
127 | PCFR = PCFR_GPR_EN | PCFR_OPDE; | |
128 | } | |
129 | ||
130 | static void spitz_postsuspend(void) | |
131 | { | |
b6eede11 | 132 | pxa2xx_mfp_config(&gpio18_config[1], 1); |
e8b6f7f4 RP |
133 | } |
134 | ||
135 | static int spitz_should_wakeup(unsigned int resume_on_alarm) | |
136 | { | |
137 | int is_resume = 0; | |
b7557de4 | 138 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
139 | |
140 | if (spitz_last_ac_status != acin) { | |
141 | if (acin) { | |
142 | /* charge on */ | |
143 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
144 | dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); | |
145 | } else { | |
146 | /* charge off */ | |
147 | dev_dbg(sharpsl_pm.dev, "AC Removed\n"); | |
b7557de4 RP |
148 | sharpsl_pm_led(SHARPSL_LED_OFF); |
149 | sharpsl_pm.machinfo->charge(0); | |
e8b6f7f4 RP |
150 | sharpsl_pm.charge_mode = CHRG_OFF; |
151 | } | |
152 | spitz_last_ac_status = acin; | |
153 | /* Return to suspend as this must be what we were woken for */ | |
154 | return 0; | |
155 | } | |
156 | ||
157 | if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) | |
158 | is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); | |
159 | ||
160 | if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) | |
161 | is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); | |
162 | ||
163 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
164 | is_resume |= PWER_RTC; | |
165 | ||
b64b0b76 | 166 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume); |
e8b6f7f4 RP |
167 | return is_resume; |
168 | } | |
169 | ||
170 | static unsigned long spitz_charger_wakeup(void) | |
171 | { | |
172 | return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); | |
173 | } | |
174 | ||
b7557de4 | 175 | unsigned long spitzpm_read_devdata(int type) |
e8b6f7f4 | 176 | { |
b64b0b76 | 177 | switch (type) { |
b7557de4 RP |
178 | case SHARPSL_STATUS_ACIN: |
179 | return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); | |
180 | case SHARPSL_STATUS_LOCK: | |
05732d7e | 181 | return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock); |
b7557de4 | 182 | case SHARPSL_STATUS_CHRGFULL: |
05732d7e | 183 | return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull); |
b7557de4 | 184 | case SHARPSL_STATUS_FATAL: |
05732d7e | 185 | return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal); |
b7557de4 RP |
186 | case SHARPSL_ACIN_VOLT: |
187 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); | |
188 | case SHARPSL_BATT_TEMP: | |
189 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); | |
190 | case SHARPSL_BATT_VOLT: | |
191 | default: | |
192 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); | |
193 | } | |
e8b6f7f4 RP |
194 | } |
195 | ||
196 | struct sharpsl_charger_machinfo spitz_pm_machinfo = { | |
197 | .init = spitz_charger_init, | |
d48898a3 | 198 | .exit = NULL, |
e8b6f7f4 RP |
199 | .gpio_batlock = SPITZ_GPIO_BAT_COVER, |
200 | .gpio_acin = SPITZ_GPIO_AC_IN, | |
201 | .gpio_batfull = SPITZ_GPIO_CHRG_FULL, | |
f8703dc8 | 202 | .batfull_irq = 1, |
e8b6f7f4 | 203 | .gpio_fatal = SPITZ_GPIO_FATAL_BAT, |
e8b6f7f4 RP |
204 | .discharge = spitz_discharge, |
205 | .discharge1 = spitz_discharge1, | |
206 | .charge = spitz_charge, | |
e8b6f7f4 RP |
207 | .measure_temp = spitz_measure_temp, |
208 | .presuspend = spitz_presuspend, | |
209 | .postsuspend = spitz_postsuspend, | |
b7557de4 | 210 | .read_devdata = spitzpm_read_devdata, |
e8b6f7f4 RP |
211 | .charger_wakeup = spitz_charger_wakeup, |
212 | .should_wakeup = spitz_should_wakeup, | |
5cbff960 DB |
213 | #if defined(CONFIG_LCD_CORGI) |
214 | .backlight_limit = corgi_lcd_limit_intensity, | |
02a8e769 | 215 | #endif |
f8703dc8 RP |
216 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
217 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
218 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
219 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
220 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
221 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
e8b6f7f4 | 222 | .bat_levels = 40, |
0ba01ebc PM |
223 | .bat_levels_noac = sharpsl_battery_levels_noac, |
224 | .bat_levels_acin = sharpsl_battery_levels_acin, | |
e8b6f7f4 RP |
225 | .status_high_acin = 188, |
226 | .status_low_acin = 178, | |
227 | .status_high_noac = 185, | |
228 | .status_low_noac = 175, | |
229 | }; | |
230 | ||
231 | static struct platform_device *spitzpm_device; | |
232 | ||
233 | static int __devinit spitzpm_init(void) | |
234 | { | |
235 | int ret; | |
236 | ||
5806d8ab DB |
237 | if (!machine_is_spitz() && !machine_is_akita() |
238 | && !machine_is_borzoi()) | |
239 | return -ENODEV; | |
240 | ||
e8b6f7f4 RP |
241 | spitzpm_device = platform_device_alloc("sharpsl-pm", -1); |
242 | if (!spitzpm_device) | |
243 | return -ENOMEM; | |
244 | ||
245 | spitzpm_device->dev.platform_data = &spitz_pm_machinfo; | |
246 | ret = platform_device_add(spitzpm_device); | |
247 | ||
248 | if (ret) | |
249 | platform_device_put(spitzpm_device); | |
250 | ||
251 | return ret; | |
252 | } | |
253 | ||
254 | static void spitzpm_exit(void) | |
255 | { | |
b64b0b76 | 256 | platform_device_unregister(spitzpm_device); |
e8b6f7f4 RP |
257 | } |
258 | ||
259 | module_init(spitzpm_init); | |
260 | module_exit(spitzpm_exit); |