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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> | |
19 | #include <asm/apm.h> | |
20 | #include <asm/irq.h> | |
21 | #include <asm/mach-types.h> | |
22 | #include <asm/hardware.h> | |
23 | #include <asm/hardware/scoop.h> | |
24 | ||
25 | #include <asm/arch/sharpsl.h> | |
26 | #include <asm/arch/spitz.h> | |
27 | #include <asm/arch/pxa-regs.h> | |
28 | #include "sharpsl.h" | |
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 | ||
e8b6f7f4 RP |
37 | static int spitz_last_ac_status; |
38 | ||
39 | static void spitz_charger_init(void) | |
40 | { | |
41 | pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); | |
42 | pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); | |
b7557de4 | 43 | sharpsl_pm_pxa_init(); |
e8b6f7f4 RP |
44 | } |
45 | ||
46 | static void spitz_measure_temp(int on) | |
47 | { | |
48 | if (on) | |
49 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); | |
50 | else | |
51 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); | |
52 | } | |
53 | ||
54 | static void spitz_charge(int on) | |
55 | { | |
56 | if (on) { | |
57 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { | |
58 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
59 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
60 | } else { | |
61 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
62 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
63 | } | |
64 | } else { | |
65 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
66 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
67 | } | |
68 | } | |
69 | ||
70 | static void spitz_discharge(int on) | |
71 | { | |
72 | if (on) | |
73 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); | |
74 | else | |
75 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); | |
76 | } | |
77 | ||
78 | /* HACK - For unknown reasons, accurate voltage readings are only made with a load | |
79 | on the power bus which the green led on spitz provides */ | |
80 | static void spitz_discharge1(int on) | |
81 | { | |
82 | if (on) | |
83 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); | |
84 | else | |
85 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); | |
86 | } | |
87 | ||
88 | static void spitz_presuspend(void) | |
89 | { | |
b7557de4 | 90 | spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
91 | |
92 | /* GPIO Sleep Register */ | |
93 | PGSR0 = 0x00144018; | |
94 | PGSR1 = 0x00EF0000; | |
95 | if (machine_is_akita()) { | |
96 | PGSR2 = 0x2121C000; | |
97 | PGSR3 = 0x00600400; | |
98 | } else { | |
99 | PGSR2 = 0x0121C000; | |
100 | PGSR3 = 0x00600000; | |
101 | } | |
102 | ||
103 | PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; | |
104 | PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; | |
105 | PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; | |
106 | PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; | |
107 | PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); | |
108 | ||
109 | pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); | |
110 | ||
111 | PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); | |
112 | PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
113 | PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; | |
114 | PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
115 | PKSR = 0xffffffff; // clear | |
116 | ||
117 | /* nRESET_OUT Disable */ | |
118 | PSLR |= PSLR_SL_ROD; | |
119 | ||
120 | /* Clear reset status */ | |
121 | RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; | |
122 | ||
123 | /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ | |
124 | PCFR = PCFR_GPR_EN | PCFR_OPDE; | |
125 | } | |
126 | ||
127 | static void spitz_postsuspend(void) | |
128 | { | |
129 | pxa_gpio_mode(GPIO18_RDY_MD); | |
130 | pxa_gpio_mode(10 | GPIO_IN); | |
131 | } | |
132 | ||
133 | static int spitz_should_wakeup(unsigned int resume_on_alarm) | |
134 | { | |
135 | int is_resume = 0; | |
b7557de4 | 136 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
137 | |
138 | if (spitz_last_ac_status != acin) { | |
139 | if (acin) { | |
140 | /* charge on */ | |
141 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
142 | dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); | |
143 | } else { | |
144 | /* charge off */ | |
145 | dev_dbg(sharpsl_pm.dev, "AC Removed\n"); | |
b7557de4 RP |
146 | sharpsl_pm_led(SHARPSL_LED_OFF); |
147 | sharpsl_pm.machinfo->charge(0); | |
e8b6f7f4 RP |
148 | sharpsl_pm.charge_mode = CHRG_OFF; |
149 | } | |
150 | spitz_last_ac_status = acin; | |
151 | /* Return to suspend as this must be what we were woken for */ | |
152 | return 0; | |
153 | } | |
154 | ||
155 | if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) | |
156 | is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); | |
157 | ||
158 | if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) | |
159 | is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); | |
160 | ||
161 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
162 | is_resume |= PWER_RTC; | |
163 | ||
164 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); | |
165 | return is_resume; | |
166 | } | |
167 | ||
168 | static unsigned long spitz_charger_wakeup(void) | |
169 | { | |
170 | return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); | |
171 | } | |
172 | ||
b7557de4 | 173 | unsigned long spitzpm_read_devdata(int type) |
e8b6f7f4 | 174 | { |
b7557de4 RP |
175 | switch(type) { |
176 | case SHARPSL_STATUS_ACIN: | |
177 | return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); | |
178 | case SHARPSL_STATUS_LOCK: | |
179 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock); | |
180 | case SHARPSL_STATUS_CHRGFULL: | |
181 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull); | |
182 | case SHARPSL_STATUS_FATAL: | |
183 | return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal); | |
184 | case SHARPSL_ACIN_VOLT: | |
185 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); | |
186 | case SHARPSL_BATT_TEMP: | |
187 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); | |
188 | case SHARPSL_BATT_VOLT: | |
189 | default: | |
190 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); | |
191 | } | |
e8b6f7f4 RP |
192 | } |
193 | ||
194 | struct sharpsl_charger_machinfo spitz_pm_machinfo = { | |
195 | .init = spitz_charger_init, | |
b7557de4 | 196 | .exit = sharpsl_pm_pxa_remove, |
e8b6f7f4 RP |
197 | .gpio_batlock = SPITZ_GPIO_BAT_COVER, |
198 | .gpio_acin = SPITZ_GPIO_AC_IN, | |
199 | .gpio_batfull = SPITZ_GPIO_CHRG_FULL, | |
f8703dc8 | 200 | .batfull_irq = 1, |
e8b6f7f4 | 201 | .gpio_fatal = SPITZ_GPIO_FATAL_BAT, |
e8b6f7f4 RP |
202 | .discharge = spitz_discharge, |
203 | .discharge1 = spitz_discharge1, | |
204 | .charge = spitz_charge, | |
e8b6f7f4 RP |
205 | .measure_temp = spitz_measure_temp, |
206 | .presuspend = spitz_presuspend, | |
207 | .postsuspend = spitz_postsuspend, | |
b7557de4 | 208 | .read_devdata = spitzpm_read_devdata, |
e8b6f7f4 RP |
209 | .charger_wakeup = spitz_charger_wakeup, |
210 | .should_wakeup = spitz_should_wakeup, | |
f8703dc8 RP |
211 | .backlight_limit = corgibl_limit_intensity, |
212 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, | |
213 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
214 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
215 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
216 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
217 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
e8b6f7f4 RP |
218 | .bat_levels = 40, |
219 | .bat_levels_noac = spitz_battery_levels_noac, | |
220 | .bat_levels_acin = spitz_battery_levels_acin, | |
221 | .status_high_acin = 188, | |
222 | .status_low_acin = 178, | |
223 | .status_high_noac = 185, | |
224 | .status_low_noac = 175, | |
225 | }; | |
226 | ||
227 | static struct platform_device *spitzpm_device; | |
228 | ||
229 | static int __devinit spitzpm_init(void) | |
230 | { | |
231 | int ret; | |
232 | ||
233 | spitzpm_device = platform_device_alloc("sharpsl-pm", -1); | |
234 | if (!spitzpm_device) | |
235 | return -ENOMEM; | |
236 | ||
237 | spitzpm_device->dev.platform_data = &spitz_pm_machinfo; | |
238 | ret = platform_device_add(spitzpm_device); | |
239 | ||
240 | if (ret) | |
241 | platform_device_put(spitzpm_device); | |
242 | ||
243 | return ret; | |
244 | } | |
245 | ||
246 | static void spitzpm_exit(void) | |
247 | { | |
248 | platform_device_unregister(spitzpm_device); | |
249 | } | |
250 | ||
251 | module_init(spitzpm_init); | |
252 | module_exit(spitzpm_exit); |