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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
e8b6f7f4 RP |
2 | /* |
3 | * Battery and Power Management code for the Sharp SL-Cxx00 | |
4 | * | |
5 | * Copyright (c) 2005 Richard Purdie | |
e8b6f7f4 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> | |
158f1e95 | 13 | #include <linux/gpio.h> |
e0bf102e | 14 | #include <linux/gpio-pxa.h> |
e8b6f7f4 RP |
15 | #include <linux/interrupt.h> |
16 | #include <linux/platform_device.h> | |
14fca61a | 17 | #include <linux/apm-emulation.h> |
09eadda2 | 18 | #include <linux/spi/corgi_lcd.h> |
14fca61a | 19 | |
e8b6f7f4 RP |
20 | #include <asm/irq.h> |
21 | #include <asm/mach-types.h> | |
e8b6f7f4 | 22 | |
726d8c96 | 23 | #include "spitz.h" |
4c25c5d2 AB |
24 | #include "pxa27x.h" |
25 | #include "sharpsl_pm.h" | |
b6eede11 | 26 | |
b6eede11 | 27 | #include "generic.h" |
e8b6f7f4 | 28 | |
f8703dc8 RP |
29 | #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ |
30 | #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ | |
31 | #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ | |
32 | #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ | |
33 | #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ | |
34 | #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ | |
35 | ||
e8b6f7f4 RP |
36 | static int spitz_last_ac_status; |
37 | ||
b6eede11 EM |
38 | static struct gpio spitz_charger_gpios[] = { |
39 | { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" }, | |
40 | { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" }, | |
9bf448c6 | 41 | { SPITZ_GPIO_AC_IN, GPIOF_IN, "Charger Detection" }, |
b6eede11 EM |
42 | { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" }, |
43 | { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" }, | |
44 | { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" }, | |
45 | }; | |
46 | ||
e8b6f7f4 RP |
47 | static void spitz_charger_init(void) |
48 | { | |
b6eede11 | 49 | gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios)); |
e8b6f7f4 RP |
50 | } |
51 | ||
52 | static void spitz_measure_temp(int on) | |
53 | { | |
fff14720 | 54 | gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on); |
e8b6f7f4 RP |
55 | } |
56 | ||
57 | static void spitz_charge(int on) | |
58 | { | |
59 | if (on) { | |
60 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { | |
fff14720 EM |
61 | gpio_set_value(SPITZ_GPIO_JK_B, 1); |
62 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); | |
e8b6f7f4 | 63 | } else { |
fff14720 EM |
64 | gpio_set_value(SPITZ_GPIO_JK_B, 0); |
65 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); | |
e8b6f7f4 RP |
66 | } |
67 | } else { | |
fff14720 EM |
68 | gpio_set_value(SPITZ_GPIO_JK_B, 0); |
69 | gpio_set_value(SPITZ_GPIO_CHRG_ON, 1); | |
e8b6f7f4 RP |
70 | } |
71 | } | |
72 | ||
73 | static void spitz_discharge(int on) | |
74 | { | |
fff14720 | 75 | gpio_set_value(SPITZ_GPIO_JK_A, on); |
e8b6f7f4 RP |
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 | { | |
fff14720 | 82 | gpio_set_value(SPITZ_GPIO_LED_GREEN, on); |
e8b6f7f4 RP |
83 | } |
84 | ||
510fcb0d | 85 | static unsigned long gpio18_config = GPIO18_GPIO; |
b6eede11 | 86 | |
e8b6f7f4 RP |
87 | static void spitz_presuspend(void) |
88 | { | |
b7557de4 | 89 | spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
90 | |
91 | /* GPIO Sleep Register */ | |
92 | PGSR0 = 0x00144018; | |
93 | PGSR1 = 0x00EF0000; | |
94 | if (machine_is_akita()) { | |
95 | PGSR2 = 0x2121C000; | |
96 | PGSR3 = 0x00600400; | |
97 | } else { | |
98 | PGSR2 = 0x0121C000; | |
99 | PGSR3 = 0x00600000; | |
100 | } | |
101 | ||
102 | PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; | |
103 | PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; | |
104 | PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; | |
105 | PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; | |
106 | PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); | |
107 | ||
510fcb0d | 108 | pxa2xx_mfp_config(&gpio18_config, 1); |
b6eede11 EM |
109 | gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown"); |
110 | gpio_free(18); | |
e8b6f7f4 RP |
111 | |
112 | PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); | |
113 | PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
114 | PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; | |
115 | PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); | |
b64b0b76 | 116 | PKSR = 0xffffffff; /* clear */ |
e8b6f7f4 RP |
117 | |
118 | /* nRESET_OUT Disable */ | |
119 | PSLR |= PSLR_SL_ROD; | |
120 | ||
e8b6f7f4 RP |
121 | /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ |
122 | PCFR = PCFR_GPR_EN | PCFR_OPDE; | |
123 | } | |
124 | ||
125 | static void spitz_postsuspend(void) | |
126 | { | |
e8b6f7f4 RP |
127 | } |
128 | ||
129 | static int spitz_should_wakeup(unsigned int resume_on_alarm) | |
130 | { | |
131 | int is_resume = 0; | |
b7557de4 | 132 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); |
e8b6f7f4 RP |
133 | |
134 | if (spitz_last_ac_status != acin) { | |
135 | if (acin) { | |
136 | /* charge on */ | |
137 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
138 | dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); | |
139 | } else { | |
140 | /* charge off */ | |
141 | dev_dbg(sharpsl_pm.dev, "AC Removed\n"); | |
b7557de4 RP |
142 | sharpsl_pm_led(SHARPSL_LED_OFF); |
143 | sharpsl_pm.machinfo->charge(0); | |
e8b6f7f4 RP |
144 | sharpsl_pm.charge_mode = CHRG_OFF; |
145 | } | |
146 | spitz_last_ac_status = acin; | |
147 | /* Return to suspend as this must be what we were woken for */ | |
148 | return 0; | |
149 | } | |
150 | ||
151 | if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) | |
152 | is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); | |
153 | ||
154 | if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) | |
155 | is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); | |
156 | ||
157 | if (resume_on_alarm && (PEDR & PWER_RTC)) | |
158 | is_resume |= PWER_RTC; | |
159 | ||
b64b0b76 | 160 | dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume); |
e8b6f7f4 RP |
161 | return is_resume; |
162 | } | |
163 | ||
ca26475b | 164 | static bool spitz_charger_wakeup(void) |
e8b6f7f4 | 165 | { |
ca26475b RJ |
166 | return !gpio_get_value(SPITZ_GPIO_KEY_INT) || |
167 | gpio_get_value(SPITZ_GPIO_SYNC); | |
e8b6f7f4 RP |
168 | } |
169 | ||
a9ae9c52 | 170 | static unsigned long spitzpm_read_devdata(int type) |
e8b6f7f4 | 171 | { |
b64b0b76 | 172 | switch (type) { |
b7557de4 | 173 | case SHARPSL_STATUS_ACIN: |
9bf448c6 | 174 | return !gpio_get_value(SPITZ_GPIO_AC_IN); |
b7557de4 | 175 | case SHARPSL_STATUS_LOCK: |
05732d7e | 176 | return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock); |
b7557de4 | 177 | case SHARPSL_STATUS_CHRGFULL: |
05732d7e | 178 | return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull); |
b7557de4 | 179 | case SHARPSL_STATUS_FATAL: |
05732d7e | 180 | return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal); |
b7557de4 RP |
181 | case SHARPSL_ACIN_VOLT: |
182 | return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); | |
183 | case SHARPSL_BATT_TEMP: | |
184 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); | |
185 | case SHARPSL_BATT_VOLT: | |
186 | default: | |
187 | return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); | |
188 | } | |
e8b6f7f4 RP |
189 | } |
190 | ||
191 | struct sharpsl_charger_machinfo spitz_pm_machinfo = { | |
192 | .init = spitz_charger_init, | |
d48898a3 | 193 | .exit = NULL, |
e8b6f7f4 RP |
194 | .gpio_batlock = SPITZ_GPIO_BAT_COVER, |
195 | .gpio_acin = SPITZ_GPIO_AC_IN, | |
196 | .gpio_batfull = SPITZ_GPIO_CHRG_FULL, | |
f8703dc8 | 197 | .batfull_irq = 1, |
e8b6f7f4 | 198 | .gpio_fatal = SPITZ_GPIO_FATAL_BAT, |
e8b6f7f4 RP |
199 | .discharge = spitz_discharge, |
200 | .discharge1 = spitz_discharge1, | |
201 | .charge = spitz_charge, | |
e8b6f7f4 RP |
202 | .measure_temp = spitz_measure_temp, |
203 | .presuspend = spitz_presuspend, | |
204 | .postsuspend = spitz_postsuspend, | |
b7557de4 | 205 | .read_devdata = spitzpm_read_devdata, |
e8b6f7f4 RP |
206 | .charger_wakeup = spitz_charger_wakeup, |
207 | .should_wakeup = spitz_should_wakeup, | |
5cbff960 DB |
208 | #if defined(CONFIG_LCD_CORGI) |
209 | .backlight_limit = corgi_lcd_limit_intensity, | |
02a8e769 | 210 | #endif |
f8703dc8 RP |
211 | .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, |
212 | .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, | |
213 | .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, | |
214 | .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, | |
215 | .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, | |
216 | .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, | |
e8b6f7f4 | 217 | .bat_levels = 40, |
0ba01ebc PM |
218 | .bat_levels_noac = sharpsl_battery_levels_noac, |
219 | .bat_levels_acin = sharpsl_battery_levels_acin, | |
e8b6f7f4 RP |
220 | .status_high_acin = 188, |
221 | .status_low_acin = 178, | |
222 | .status_high_noac = 185, | |
223 | .status_low_noac = 175, | |
224 | }; | |
225 | ||
226 | static struct platform_device *spitzpm_device; | |
227 | ||
351a102d | 228 | static int spitzpm_init(void) |
e8b6f7f4 RP |
229 | { |
230 | int ret; | |
231 | ||
5806d8ab DB |
232 | if (!machine_is_spitz() && !machine_is_akita() |
233 | && !machine_is_borzoi()) | |
234 | return -ENODEV; | |
235 | ||
e8b6f7f4 RP |
236 | spitzpm_device = platform_device_alloc("sharpsl-pm", -1); |
237 | if (!spitzpm_device) | |
238 | return -ENOMEM; | |
239 | ||
240 | spitzpm_device->dev.platform_data = &spitz_pm_machinfo; | |
241 | ret = platform_device_add(spitzpm_device); | |
242 | ||
243 | if (ret) | |
244 | platform_device_put(spitzpm_device); | |
245 | ||
246 | return ret; | |
247 | } | |
248 | ||
249 | static void spitzpm_exit(void) | |
250 | { | |
b64b0b76 | 251 | platform_device_unregister(spitzpm_device); |
e8b6f7f4 RP |
252 | } |
253 | ||
254 | module_init(spitzpm_init); | |
255 | module_exit(spitzpm_exit); |