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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/gpio.h>
18#include <linux/interrupt.h>
19#include <linux/platform_device.h>
20#include <linux/apm-emulation.h>
21
22#include <asm/irq.h>
23#include <asm/mach-types.h>
24#include <mach/hardware.h>
25
26#include <mach/corgi.h>
27#include <mach/pxa2xx-regs.h>
28#include <mach/sharpsl_pm.h>
29
30#include "generic.h"
31
32#define SHARPSL_CHARGE_ON_VOLT 0x99
33#define SHARPSL_CHARGE_ON_TEMP 0xe0
34#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b
35#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34
36#define SHARPSL_FATAL_ACIN_VOLT 182
37#define SHARPSL_FATAL_NOACIN_VOLT 170
38
39static struct gpio charger_gpios[] = {
40 { CORGI_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
41 { CORGI_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" },
42 { CORGI_GPIO_CHRG_UKN, GPIOF_OUT_INIT_LOW, "Charger Unknown" },
43 { CORGI_GPIO_KEY_INT, GPIOF_IN, "Key Interrupt" },
44};
45
46static void corgi_charger_init(void)
47{
48 gpio_request_array(ARRAY_AND_SIZE(charger_gpios));
49}
50
51static void corgi_measure_temp(int on)
52{
53 gpio_set_value(CORGI_GPIO_ADC_TEMP_ON, on);
54}
55
56static void corgi_charge(int on)
57{
58 if (on) {
59 if (machine_is_corgi() && (sharpsl_pm.flags & SHARPSL_SUSPENDED)) {
60 gpio_set_value(CORGI_GPIO_CHRG_ON, 0);
61 gpio_set_value(CORGI_GPIO_CHRG_UKN, 1);
62 } else {
63 gpio_set_value(CORGI_GPIO_CHRG_ON, 1);
64 gpio_set_value(CORGI_GPIO_CHRG_UKN, 0);
65 }
66 } else {
67 gpio_set_value(CORGI_GPIO_CHRG_ON, 0);
68 gpio_set_value(CORGI_GPIO_CHRG_UKN, 0);
69 }
70}
71
72static void corgi_discharge(int on)
73{
74 gpio_set_value(CORGI_GPIO_DISCHARGE_ON, on);
75}
76
77static void corgi_presuspend(void)
78{
79}
80
81static void corgi_postsuspend(void)
82{
83}
84
85
86
87
88
89static int corgi_should_wakeup(unsigned int resume_on_alarm)
90{
91 int is_resume = 0;
92
93 dev_dbg(sharpsl_pm.dev, "GPLR0 = %x,%x\n", GPLR0, PEDR);
94
95 if ((PEDR & GPIO_bit(CORGI_GPIO_AC_IN))) {
96 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
97
98 dev_dbg(sharpsl_pm.dev, "ac insert\n");
99 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
100 } else {
101
102 dev_dbg(sharpsl_pm.dev, "ac remove\n");
103 sharpsl_pm_led(SHARPSL_LED_OFF);
104 sharpsl_pm.machinfo->charge(0);
105 sharpsl_pm.charge_mode = CHRG_OFF;
106 }
107 }
108
109 if ((PEDR & GPIO_bit(CORGI_GPIO_CHRG_FULL)))
110 dev_dbg(sharpsl_pm.dev, "Charge full interrupt\n");
111
112 if (PEDR & GPIO_bit(CORGI_GPIO_KEY_INT))
113 is_resume |= GPIO_bit(CORGI_GPIO_KEY_INT);
114
115 if (PEDR & GPIO_bit(CORGI_GPIO_WAKEUP))
116 is_resume |= GPIO_bit(CORGI_GPIO_WAKEUP);
117
118 if (resume_on_alarm && (PEDR & PWER_RTC))
119 is_resume |= PWER_RTC;
120
121 dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);
122 return is_resume;
123}
124
125static unsigned long corgi_charger_wakeup(void)
126{
127 return ~GPLR0 & ( GPIO_bit(CORGI_GPIO_AC_IN) | GPIO_bit(CORGI_GPIO_KEY_INT) | GPIO_bit(CORGI_GPIO_WAKEUP) );
128}
129
130unsigned long corgipm_read_devdata(int type)
131{
132 switch(type) {
133 case SHARPSL_STATUS_ACIN:
134 return ((GPLR(CORGI_GPIO_AC_IN) & GPIO_bit(CORGI_GPIO_AC_IN)) != 0);
135 case SHARPSL_STATUS_LOCK:
136 return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
137 case SHARPSL_STATUS_CHRGFULL:
138 return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
139 case SHARPSL_STATUS_FATAL:
140 return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
141 case SHARPSL_ACIN_VOLT:
142 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
143 case SHARPSL_BATT_TEMP:
144 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
145 case SHARPSL_BATT_VOLT:
146 default:
147 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
148 }
149}
150
151static struct sharpsl_charger_machinfo corgi_pm_machinfo = {
152 .init = corgi_charger_init,
153 .exit = NULL,
154 .gpio_batlock = CORGI_GPIO_BAT_COVER,
155 .gpio_acin = CORGI_GPIO_AC_IN,
156 .gpio_batfull = CORGI_GPIO_CHRG_FULL,
157 .discharge = corgi_discharge,
158 .charge = corgi_charge,
159 .measure_temp = corgi_measure_temp,
160 .presuspend = corgi_presuspend,
161 .postsuspend = corgi_postsuspend,
162 .read_devdata = corgipm_read_devdata,
163 .charger_wakeup = corgi_charger_wakeup,
164 .should_wakeup = corgi_should_wakeup,
165#if defined(CONFIG_LCD_CORGI)
166 .backlight_limit = corgi_lcd_limit_intensity,
167#endif
168 .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
169 .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
170 .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
171 .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
172 .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
173 .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
174 .bat_levels = 40,
175 .bat_levels_noac = sharpsl_battery_levels_noac,
176 .bat_levels_acin = sharpsl_battery_levels_acin,
177 .status_high_acin = 188,
178 .status_low_acin = 178,
179 .status_high_noac = 185,
180 .status_low_noac = 175,
181};
182
183static struct platform_device *corgipm_device;
184
185static int __devinit corgipm_init(void)
186{
187 int ret;
188
189 if (!machine_is_corgi() && !machine_is_shepherd()
190 && !machine_is_husky())
191 return -ENODEV;
192
193 corgipm_device = platform_device_alloc("sharpsl-pm", -1);
194 if (!corgipm_device)
195 return -ENOMEM;
196
197 if (!machine_is_corgi())
198 corgi_pm_machinfo.batfull_irq = 1;
199
200 corgipm_device->dev.platform_data = &corgi_pm_machinfo;
201 ret = platform_device_add(corgipm_device);
202
203 if (ret)
204 platform_device_put(corgipm_device);
205
206 return ret;
207}
208
209static void corgipm_exit(void)
210{
211 platform_device_unregister(corgipm_device);
212}
213
214module_init(corgipm_init);
215module_exit(corgipm_exit);
216
