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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 <mach/pxa27x.h>
29#include <mach/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 unsigned long spitz_charger_wakeup(void)
169{
170 unsigned long ret;
171 ret = ((!gpio_get_value(SPITZ_GPIO_KEY_INT)
172 << GPIO_bit(SPITZ_GPIO_KEY_INT))
173 | gpio_get_value(SPITZ_GPIO_SYNC));
174 return ret;
175}
176
177unsigned long spitzpm_read_devdata(int type)
178{
179 switch (type) {
180 case SHARPSL_STATUS_ACIN:
181 return !gpio_get_value(SPITZ_GPIO_AC_IN);
182 case SHARPSL_STATUS_LOCK:
183 return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
184 case SHARPSL_STATUS_CHRGFULL:
185 return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
186 case SHARPSL_STATUS_FATAL:
187 return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
188 case SHARPSL_ACIN_VOLT:
189 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
190 case SHARPSL_BATT_TEMP:
191 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
192 case SHARPSL_BATT_VOLT:
193 default:
194 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
195 }
196}
197
198struct sharpsl_charger_machinfo spitz_pm_machinfo = {
199 .init = spitz_charger_init,
200 .exit = NULL,
201 .gpio_batlock = SPITZ_GPIO_BAT_COVER,
202 .gpio_acin = SPITZ_GPIO_AC_IN,
203 .gpio_batfull = SPITZ_GPIO_CHRG_FULL,
204 .batfull_irq = 1,
205 .gpio_fatal = SPITZ_GPIO_FATAL_BAT,
206 .discharge = spitz_discharge,
207 .discharge1 = spitz_discharge1,
208 .charge = spitz_charge,
209 .measure_temp = spitz_measure_temp,
210 .presuspend = spitz_presuspend,
211 .postsuspend = spitz_postsuspend,
212 .read_devdata = spitzpm_read_devdata,
213 .charger_wakeup = spitz_charger_wakeup,
214 .should_wakeup = spitz_should_wakeup,
215#if defined(CONFIG_LCD_CORGI)
216 .backlight_limit = corgi_lcd_limit_intensity,
217#endif
218 .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
219 .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
220 .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
221 .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
222 .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
223 .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
224 .bat_levels = 40,
225 .bat_levels_noac = sharpsl_battery_levels_noac,
226 .bat_levels_acin = sharpsl_battery_levels_acin,
227 .status_high_acin = 188,
228 .status_low_acin = 178,
229 .status_high_noac = 185,
230 .status_low_noac = 175,
231};
232
233static struct platform_device *spitzpm_device;
234
235static int spitzpm_init(void)
236{
237 int ret;
238
239 if (!machine_is_spitz() && !machine_is_akita()
240 && !machine_is_borzoi())
241 return -ENODEV;
242
243 spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
244 if (!spitzpm_device)
245 return -ENOMEM;
246
247 spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
248 ret = platform_device_add(spitzpm_device);
249
250 if (ret)
251 platform_device_put(spitzpm_device);
252
253 return ret;
254}
255
256static void spitzpm_exit(void)
257{
258 platform_device_unregister(spitzpm_device);
259}
260
261module_init(spitzpm_init);
262module_exit(spitzpm_exit);
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
19#include <asm/irq.h>
20#include <asm/mach-types.h>
21
22#include "spitz.h"
23#include "pxa27x.h"
24#include "sharpsl_pm.h"
25
26#include "generic.h"
27
28#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
29#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
30#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
31#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
32#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
33#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
34
35static int spitz_last_ac_status;
36
37static struct gpio spitz_charger_gpios[] = {
38 { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" },
39 { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" },
40 { SPITZ_GPIO_AC_IN, GPIOF_IN, "Charger Detection" },
41 { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
42 { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" },
43 { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" },
44};
45
46static void spitz_charger_init(void)
47{
48 gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios));
49}
50
51static void spitz_measure_temp(int on)
52{
53 gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
54}
55
56static void spitz_charge(int on)
57{
58 if (on) {
59 if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
60 gpio_set_value(SPITZ_GPIO_JK_B, 1);
61 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
62 } else {
63 gpio_set_value(SPITZ_GPIO_JK_B, 0);
64 gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
65 }
66 } else {
67 gpio_set_value(SPITZ_GPIO_JK_B, 0);
68 gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
69 }
70}
71
72static void spitz_discharge(int on)
73{
74 gpio_set_value(SPITZ_GPIO_JK_A, on);
75}
76
77/* HACK - For unknown reasons, accurate voltage readings are only made with a load
78 on the power bus which the green led on spitz provides */
79static void spitz_discharge1(int on)
80{
81 gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
82}
83
84static unsigned long gpio18_config = GPIO18_GPIO;
85
86static void spitz_presuspend(void)
87{
88 spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
89
90 /* GPIO Sleep Register */
91 PGSR0 = 0x00144018;
92 PGSR1 = 0x00EF0000;
93 if (machine_is_akita()) {
94 PGSR2 = 0x2121C000;
95 PGSR3 = 0x00600400;
96 } else {
97 PGSR2 = 0x0121C000;
98 PGSR3 = 0x00600000;
99 }
100
101 PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
102 PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
103 PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
104 PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
105 PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
106
107 pxa2xx_mfp_config(&gpio18_config, 1);
108 gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
109 gpio_free(18);
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 /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
121 PCFR = PCFR_GPR_EN | PCFR_OPDE;
122}
123
124static void spitz_postsuspend(void)
125{
126}
127
128static int spitz_should_wakeup(unsigned int resume_on_alarm)
129{
130 int is_resume = 0;
131 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
132
133 if (spitz_last_ac_status != acin) {
134 if (acin) {
135 /* charge on */
136 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
137 dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
138 } else {
139 /* charge off */
140 dev_dbg(sharpsl_pm.dev, "AC Removed\n");
141 sharpsl_pm_led(SHARPSL_LED_OFF);
142 sharpsl_pm.machinfo->charge(0);
143 sharpsl_pm.charge_mode = CHRG_OFF;
144 }
145 spitz_last_ac_status = acin;
146 /* Return to suspend as this must be what we were woken for */
147 return 0;
148 }
149
150 if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
151 is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);
152
153 if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
154 is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);
155
156 if (resume_on_alarm && (PEDR & PWER_RTC))
157 is_resume |= PWER_RTC;
158
159 dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
160 return is_resume;
161}
162
163static bool spitz_charger_wakeup(void)
164{
165 return !gpio_get_value(SPITZ_GPIO_KEY_INT) ||
166 gpio_get_value(SPITZ_GPIO_SYNC);
167}
168
169unsigned long spitzpm_read_devdata(int type)
170{
171 switch (type) {
172 case SHARPSL_STATUS_ACIN:
173 return !gpio_get_value(SPITZ_GPIO_AC_IN);
174 case SHARPSL_STATUS_LOCK:
175 return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
176 case SHARPSL_STATUS_CHRGFULL:
177 return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
178 case SHARPSL_STATUS_FATAL:
179 return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
180 case SHARPSL_ACIN_VOLT:
181 return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
182 case SHARPSL_BATT_TEMP:
183 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
184 case SHARPSL_BATT_VOLT:
185 default:
186 return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
187 }
188}
189
190struct sharpsl_charger_machinfo spitz_pm_machinfo = {
191 .init = spitz_charger_init,
192 .exit = NULL,
193 .gpio_batlock = SPITZ_GPIO_BAT_COVER,
194 .gpio_acin = SPITZ_GPIO_AC_IN,
195 .gpio_batfull = SPITZ_GPIO_CHRG_FULL,
196 .batfull_irq = 1,
197 .gpio_fatal = SPITZ_GPIO_FATAL_BAT,
198 .discharge = spitz_discharge,
199 .discharge1 = spitz_discharge1,
200 .charge = spitz_charge,
201 .measure_temp = spitz_measure_temp,
202 .presuspend = spitz_presuspend,
203 .postsuspend = spitz_postsuspend,
204 .read_devdata = spitzpm_read_devdata,
205 .charger_wakeup = spitz_charger_wakeup,
206 .should_wakeup = spitz_should_wakeup,
207#if defined(CONFIG_LCD_CORGI)
208 .backlight_limit = corgi_lcd_limit_intensity,
209#endif
210 .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
211 .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
212 .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
213 .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
214 .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
215 .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
216 .bat_levels = 40,
217 .bat_levels_noac = sharpsl_battery_levels_noac,
218 .bat_levels_acin = sharpsl_battery_levels_acin,
219 .status_high_acin = 188,
220 .status_low_acin = 178,
221 .status_high_noac = 185,
222 .status_low_noac = 175,
223};
224
225static struct platform_device *spitzpm_device;
226
227static int spitzpm_init(void)
228{
229 int ret;
230
231 if (!machine_is_spitz() && !machine_is_akita()
232 && !machine_is_borzoi())
233 return -ENODEV;
234
235 spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
236 if (!spitzpm_device)
237 return -ENOMEM;
238
239 spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
240 ret = platform_device_add(spitzpm_device);
241
242 if (ret)
243 platform_device_put(spitzpm_device);
244
245 return ret;
246}
247
248static void spitzpm_exit(void)
249{
250 platform_device_unregister(spitzpm_device);
251}
252
253module_init(spitzpm_init);
254module_exit(spitzpm_exit);