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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Battery and Power Management code for the Sharp SL-Cxx00
4 *
5 * Copyright (c) 2005 Richard Purdie
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>
13#include <linux/gpio.h>
14#include <linux/gpio-pxa.h>
15#include <linux/interrupt.h>
16#include <linux/platform_device.h>
17#include <linux/apm-emulation.h>
18#include <linux/spi/corgi_lcd.h>
19
20#include <asm/irq.h>
21#include <asm/mach-types.h>
22
23#include "spitz.h"
24#include "pxa27x.h"
25#include "sharpsl_pm.h"
26
27#include "generic.h"
28
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
36static int spitz_last_ac_status;
37
38static void spitz_charger_init(void)
39{
40 gpio_request(SPITZ_GPIO_KEY_INT, "Keyboard Interrupt");
41 gpio_direction_input(SPITZ_GPIO_KEY_INT);
42 gpio_request(SPITZ_GPIO_SYNC, "Sync");
43 gpio_direction_input(SPITZ_GPIO_SYNC);
44 gpio_request(SPITZ_GPIO_AC_IN, "Charger Detection");
45 gpio_direction_input(SPITZ_GPIO_AC_IN);
46 gpio_request(SPITZ_GPIO_ADC_TEMP_ON, "ADC Temp On");
47 gpio_direction_output(SPITZ_GPIO_ADC_TEMP_ON, 0);
48 gpio_request(SPITZ_GPIO_JK_B, "JK B");
49 gpio_direction_output(SPITZ_GPIO_JK_B, 0);
50 gpio_request(SPITZ_GPIO_CHRG_ON, "Charger On");
51 gpio_direction_output(SPITZ_GPIO_CHRG_ON, 0);
52}
53
54static void spitz_measure_temp(int on)
55{
56 gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
57}
58
59static void spitz_charge(int on)
60{
61 if (on) {
62 if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
63 gpio_set_value(SPITZ_GPIO_JK_B, 1);
64 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
65 } else {
66 gpio_set_value(SPITZ_GPIO_JK_B, 0);
67 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
68 }
69 } else {
70 gpio_set_value(SPITZ_GPIO_JK_B, 0);
71 gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
72 }
73}
74
75static void spitz_discharge(int on)
76{
77 gpio_set_value(SPITZ_GPIO_JK_A, on);
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 */
82static void spitz_discharge1(int on)
83{
84 gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
85}
86
87static unsigned long gpio18_config = GPIO18_GPIO;
88
89static void spitz_presuspend(void)
90{
91 spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
92
93 /* GPIO Sleep Register */
94 PGSR0 = 0x00144018;
95 PGSR1 = 0x00EF0000;
96 if (machine_is_akita()) {
97 PGSR2 = 0x2121C000;
98 PGSR3 = 0x00600400;
99 } else {
100 PGSR2 = 0x0121C000;
101 PGSR3 = 0x00600000;
102 }
103
104 PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
105 PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
106 PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
107 PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
108 PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
109
110 pxa2xx_mfp_config(&gpio18_config, 1);
111 gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
112 gpio_free(18);
113
114 PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
115 PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
116 PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
117 PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
118 PKSR = 0xffffffff; /* clear */
119
120 /* nRESET_OUT Disable */
121 PSLR |= PSLR_SL_ROD;
122
123 /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
124 PCFR = PCFR_GPR_EN | PCFR_OPDE;
125}
126
127static void spitz_postsuspend(void)
128{
129}
130
131static int spitz_should_wakeup(unsigned int resume_on_alarm)
132{
133 int is_resume = 0;
134 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
135
136 if (spitz_last_ac_status != acin) {
137 if (acin) {
138 /* charge on */
139 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
140 dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
141 } else {
142 /* charge off */
143 dev_dbg(sharpsl_pm.dev, "AC Removed\n");
144 sharpsl_pm_led(SHARPSL_LED_OFF);
145 sharpsl_pm.machinfo->charge(0);
146 sharpsl_pm.charge_mode = CHRG_OFF;
147 }
148 spitz_last_ac_status = acin;
149 /* Return to suspend as this must be what we were woken for */
150 return 0;
151 }
152
153 if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
154 is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);
155
156 if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
157 is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);
158
159 if (resume_on_alarm && (PEDR & PWER_RTC))
160 is_resume |= PWER_RTC;
161
162 dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
163 return is_resume;
164}
165
166static bool spitz_charger_wakeup(void)
167{
168 return !gpio_get_value(SPITZ_GPIO_KEY_INT) ||
169 gpio_get_value(SPITZ_GPIO_SYNC);
170}
171
172static unsigned long spitzpm_read_devdata(int type)
173{
174 switch (type) {
175 case SHARPSL_STATUS_ACIN:
176 return !gpio_get_value(SPITZ_GPIO_AC_IN);
177 case SHARPSL_STATUS_LOCK:
178 return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
179 case SHARPSL_STATUS_CHRGFULL:
180 return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
181 case SHARPSL_STATUS_FATAL:
182 return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
183 case SHARPSL_ACIN_VOLT:
184 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
185 case SHARPSL_BATT_TEMP:
186 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
187 case SHARPSL_BATT_VOLT:
188 default:
189 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
190 }
191}
192
193struct sharpsl_charger_machinfo spitz_pm_machinfo = {
194 .init = spitz_charger_init,
195 .exit = NULL,
196 .gpio_batlock = SPITZ_GPIO_BAT_COVER,
197 .gpio_acin = SPITZ_GPIO_AC_IN,
198 .gpio_batfull = SPITZ_GPIO_CHRG_FULL,
199 .batfull_irq = 1,
200 .gpio_fatal = SPITZ_GPIO_FATAL_BAT,
201 .discharge = spitz_discharge,
202 .discharge1 = spitz_discharge1,
203 .charge = spitz_charge,
204 .measure_temp = spitz_measure_temp,
205 .presuspend = spitz_presuspend,
206 .postsuspend = spitz_postsuspend,
207 .read_devdata = spitzpm_read_devdata,
208 .charger_wakeup = spitz_charger_wakeup,
209 .should_wakeup = spitz_should_wakeup,
210#if defined(CONFIG_LCD_CORGI)
211 .backlight_limit = corgi_lcd_limit_intensity,
212#endif
213 .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
214 .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
215 .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
216 .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
217 .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
218 .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
219 .bat_levels = 40,
220 .bat_levels_noac = sharpsl_battery_levels_noac,
221 .bat_levels_acin = sharpsl_battery_levels_acin,
222 .status_high_acin = 188,
223 .status_low_acin = 178,
224 .status_high_noac = 185,
225 .status_low_noac = 175,
226};
227
228static struct platform_device *spitzpm_device;
229
230static int spitzpm_init(void)
231{
232 int ret;
233
234 if (!machine_is_spitz() && !machine_is_akita()
235 && !machine_is_borzoi())
236 return -ENODEV;
237
238 spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
239 if (!spitzpm_device)
240 return -ENOMEM;
241
242 spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
243 ret = platform_device_add(spitzpm_device);
244
245 if (ret)
246 platform_device_put(spitzpm_device);
247
248 return ret;
249}
250
251static void spitzpm_exit(void)
252{
253 platform_device_unregister(spitzpm_device);
254}
255
256module_init(spitzpm_init);
257module_exit(spitzpm_exit);
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/gpio.h>
18#include <linux/gpio-pxa.h>
19#include <linux/interrupt.h>
20#include <linux/platform_device.h>
21#include <linux/apm-emulation.h>
22
23#include <asm/irq.h>
24#include <asm/mach-types.h>
25#include <mach/hardware.h>
26
27#include <mach/spitz.h>
28#include "pxa27x.h"
29#include "sharpsl_pm.h"
30
31#include "generic.h"
32
33#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
34#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
35#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
36#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
37#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
38#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
39
40static int spitz_last_ac_status;
41
42static struct gpio spitz_charger_gpios[] = {
43 { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" },
44 { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" },
45 { SPITZ_GPIO_AC_IN, GPIOF_IN, "Charger Detection" },
46 { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
47 { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" },
48 { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" },
49};
50
51static void spitz_charger_init(void)
52{
53 gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios));
54}
55
56static void spitz_measure_temp(int on)
57{
58 gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
59}
60
61static void spitz_charge(int on)
62{
63 if (on) {
64 if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
65 gpio_set_value(SPITZ_GPIO_JK_B, 1);
66 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
67 } else {
68 gpio_set_value(SPITZ_GPIO_JK_B, 0);
69 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
70 }
71 } else {
72 gpio_set_value(SPITZ_GPIO_JK_B, 0);
73 gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
74 }
75}
76
77static void spitz_discharge(int on)
78{
79 gpio_set_value(SPITZ_GPIO_JK_A, on);
80}
81
82/* HACK - For unknown reasons, accurate voltage readings are only made with a load
83 on the power bus which the green led on spitz provides */
84static void spitz_discharge1(int on)
85{
86 gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
87}
88
89static unsigned long gpio18_config = GPIO18_GPIO;
90
91static void spitz_presuspend(void)
92{
93 spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
94
95 /* GPIO Sleep Register */
96 PGSR0 = 0x00144018;
97 PGSR1 = 0x00EF0000;
98 if (machine_is_akita()) {
99 PGSR2 = 0x2121C000;
100 PGSR3 = 0x00600400;
101 } else {
102 PGSR2 = 0x0121C000;
103 PGSR3 = 0x00600000;
104 }
105
106 PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
107 PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
108 PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
109 PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
110 PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
111
112 pxa2xx_mfp_config(&gpio18_config, 1);
113 gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
114 gpio_free(18);
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 /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
126 PCFR = PCFR_GPR_EN | PCFR_OPDE;
127}
128
129static void spitz_postsuspend(void)
130{
131}
132
133static int spitz_should_wakeup(unsigned int resume_on_alarm)
134{
135 int is_resume = 0;
136 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
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");
146 sharpsl_pm_led(SHARPSL_LED_OFF);
147 sharpsl_pm.machinfo->charge(0);
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
168static bool spitz_charger_wakeup(void)
169{
170 return !gpio_get_value(SPITZ_GPIO_KEY_INT) ||
171 gpio_get_value(SPITZ_GPIO_SYNC);
172}
173
174unsigned long spitzpm_read_devdata(int type)
175{
176 switch (type) {
177 case SHARPSL_STATUS_ACIN:
178 return !gpio_get_value(SPITZ_GPIO_AC_IN);
179 case SHARPSL_STATUS_LOCK:
180 return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
181 case SHARPSL_STATUS_CHRGFULL:
182 return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
183 case SHARPSL_STATUS_FATAL:
184 return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
185 case SHARPSL_ACIN_VOLT:
186 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
187 case SHARPSL_BATT_TEMP:
188 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
189 case SHARPSL_BATT_VOLT:
190 default:
191 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
192 }
193}
194
195struct sharpsl_charger_machinfo spitz_pm_machinfo = {
196 .init = spitz_charger_init,
197 .exit = NULL,
198 .gpio_batlock = SPITZ_GPIO_BAT_COVER,
199 .gpio_acin = SPITZ_GPIO_AC_IN,
200 .gpio_batfull = SPITZ_GPIO_CHRG_FULL,
201 .batfull_irq = 1,
202 .gpio_fatal = SPITZ_GPIO_FATAL_BAT,
203 .discharge = spitz_discharge,
204 .discharge1 = spitz_discharge1,
205 .charge = spitz_charge,
206 .measure_temp = spitz_measure_temp,
207 .presuspend = spitz_presuspend,
208 .postsuspend = spitz_postsuspend,
209 .read_devdata = spitzpm_read_devdata,
210 .charger_wakeup = spitz_charger_wakeup,
211 .should_wakeup = spitz_should_wakeup,
212#if defined(CONFIG_LCD_CORGI)
213 .backlight_limit = corgi_lcd_limit_intensity,
214#endif
215 .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
216 .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
217 .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
218 .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
219 .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
220 .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
221 .bat_levels = 40,
222 .bat_levels_noac = sharpsl_battery_levels_noac,
223 .bat_levels_acin = sharpsl_battery_levels_acin,
224 .status_high_acin = 188,
225 .status_low_acin = 178,
226 .status_high_noac = 185,
227 .status_low_noac = 175,
228};
229
230static struct platform_device *spitzpm_device;
231
232static int spitzpm_init(void)
233{
234 int ret;
235
236 if (!machine_is_spitz() && !machine_is_akita()
237 && !machine_is_borzoi())
238 return -ENODEV;
239
240 spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
241 if (!spitzpm_device)
242 return -ENOMEM;
243
244 spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
245 ret = platform_device_add(spitzpm_device);
246
247 if (ret)
248 platform_device_put(spitzpm_device);
249
250 return ret;
251}
252
253static void spitzpm_exit(void)
254{
255 platform_device_unregister(spitzpm_device);
256}
257
258module_init(spitzpm_init);
259module_exit(spitzpm_exit);