]>
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> | |
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 | ||
30 | static int spitz_last_ac_status; | |
31 | ||
32 | static void spitz_charger_init(void) | |
33 | { | |
34 | pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); | |
35 | pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); | |
36 | } | |
37 | ||
38 | static void spitz_charge_led(int val) | |
39 | { | |
40 | if (val == SHARPSL_LED_ERROR) { | |
41 | dev_dbg(sharpsl_pm.dev, "Charge LED Error\n"); | |
42 | } else if (val == SHARPSL_LED_ON) { | |
43 | dev_dbg(sharpsl_pm.dev, "Charge LED On\n"); | |
44 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE); | |
45 | } else { | |
46 | dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); | |
47 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE); | |
48 | } | |
49 | } | |
50 | ||
51 | static void spitz_measure_temp(int on) | |
52 | { | |
53 | if (on) | |
54 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); | |
55 | else | |
56 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); | |
57 | } | |
58 | ||
59 | static void spitz_charge(int on) | |
60 | { | |
61 | if (on) { | |
62 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { | |
63 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
64 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
65 | } else { | |
66 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
67 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
68 | } | |
69 | } else { | |
70 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); | |
71 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); | |
72 | } | |
73 | } | |
74 | ||
75 | static void spitz_discharge(int on) | |
76 | { | |
77 | if (on) | |
78 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); | |
79 | else | |
80 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); | |
81 | } | |
82 | ||
83 | /* HACK - For unknown reasons, accurate voltage readings are only made with a load | |
84 | on the power bus which the green led on spitz provides */ | |
85 | static void spitz_discharge1(int on) | |
86 | { | |
87 | if (on) | |
88 | set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); | |
89 | else | |
90 | reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); | |
91 | } | |
92 | ||
93 | static void spitz_presuspend(void) | |
94 | { | |
95 | spitz_last_ac_status = STATUS_AC_IN(); | |
96 | ||
97 | /* GPIO Sleep Register */ | |
98 | PGSR0 = 0x00144018; | |
99 | PGSR1 = 0x00EF0000; | |
100 | if (machine_is_akita()) { | |
101 | PGSR2 = 0x2121C000; | |
102 | PGSR3 = 0x00600400; | |
103 | } else { | |
104 | PGSR2 = 0x0121C000; | |
105 | PGSR3 = 0x00600000; | |
106 | } | |
107 | ||
108 | PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; | |
109 | PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; | |
110 | PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; | |
111 | PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; | |
112 | PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); | |
113 | ||
114 | pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); | |
115 | ||
116 | PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); | |
117 | PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
118 | PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; | |
119 | PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
120 | PKSR = 0xffffffff; // clear | |
121 | ||
122 | /* nRESET_OUT Disable */ | |
123 | PSLR |= PSLR_SL_ROD; | |
124 | ||
125 | /* Clear reset status */ | |
126 | RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; | |
127 | ||
128 | /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ | |
129 | PCFR = PCFR_GPR_EN | PCFR_OPDE; | |
130 | } | |
131 | ||
132 | static void spitz_postsuspend(void) | |
133 | { | |
134 | pxa_gpio_mode(GPIO18_RDY_MD); | |
135 | pxa_gpio_mode(10 | GPIO_IN); | |
136 | } | |
137 | ||
138 | static int spitz_should_wakeup(unsigned int resume_on_alarm) | |
139 | { | |
140 | int is_resume = 0; | |
141 | int acin = STATUS_AC_IN(); | |
142 | ||
143 | if (spitz_last_ac_status != acin) { | |
144 | if (acin) { | |
145 | /* charge on */ | |
146 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
147 | dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); | |
148 | } else { | |
149 | /* charge off */ | |
150 | dev_dbg(sharpsl_pm.dev, "AC Removed\n"); | |
151 | CHARGE_LED_OFF(); | |
152 | CHARGE_OFF(); | |
153 | sharpsl_pm.charge_mode = CHRG_OFF; | |
154 | } | |
155 | spitz_last_ac_status = acin; | |
156 | /* Return to suspend as this must be what we were woken for */ | |
157 | return 0; | |
158 | } | |
159 | ||
160 | if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) | |
161 | is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); | |
162 | ||
163 | if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) | |
164 | is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); | |
165 | ||
166 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
167 | is_resume |= PWER_RTC; | |
168 | ||
169 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); | |
170 | return is_resume; | |
171 | } | |
172 | ||
173 | static unsigned long spitz_charger_wakeup(void) | |
174 | { | |
175 | return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); | |
176 | } | |
177 | ||
178 | static int spitz_acin_status(void) | |
179 | { | |
180 | return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); | |
181 | } | |
182 | ||
183 | struct sharpsl_charger_machinfo spitz_pm_machinfo = { | |
184 | .init = spitz_charger_init, | |
185 | .gpio_batlock = SPITZ_GPIO_BAT_COVER, | |
186 | .gpio_acin = SPITZ_GPIO_AC_IN, | |
187 | .gpio_batfull = SPITZ_GPIO_CHRG_FULL, | |
188 | .gpio_fatal = SPITZ_GPIO_FATAL_BAT, | |
189 | .status_acin = spitz_acin_status, | |
190 | .discharge = spitz_discharge, | |
191 | .discharge1 = spitz_discharge1, | |
192 | .charge = spitz_charge, | |
193 | .chargeled = spitz_charge_led, | |
194 | .measure_temp = spitz_measure_temp, | |
195 | .presuspend = spitz_presuspend, | |
196 | .postsuspend = spitz_postsuspend, | |
197 | .charger_wakeup = spitz_charger_wakeup, | |
198 | .should_wakeup = spitz_should_wakeup, | |
199 | .bat_levels = 40, | |
200 | .bat_levels_noac = spitz_battery_levels_noac, | |
201 | .bat_levels_acin = spitz_battery_levels_acin, | |
202 | .status_high_acin = 188, | |
203 | .status_low_acin = 178, | |
204 | .status_high_noac = 185, | |
205 | .status_low_noac = 175, | |
206 | }; | |
207 | ||
208 | static struct platform_device *spitzpm_device; | |
209 | ||
210 | static int __devinit spitzpm_init(void) | |
211 | { | |
212 | int ret; | |
213 | ||
214 | spitzpm_device = platform_device_alloc("sharpsl-pm", -1); | |
215 | if (!spitzpm_device) | |
216 | return -ENOMEM; | |
217 | ||
218 | spitzpm_device->dev.platform_data = &spitz_pm_machinfo; | |
219 | ret = platform_device_add(spitzpm_device); | |
220 | ||
221 | if (ret) | |
222 | platform_device_put(spitzpm_device); | |
223 | ||
224 | return ret; | |
225 | } | |
226 | ||
227 | static void spitzpm_exit(void) | |
228 | { | |
229 | platform_device_unregister(spitzpm_device); | |
230 | } | |
231 | ||
232 | module_init(spitzpm_init); | |
233 | module_exit(spitzpm_exit); |