1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2e8b6f7f4SRichard Purdie /*
3e8b6f7f4SRichard Purdie * Battery and Power Management code for the Sharp SL-Cxx00
4e8b6f7f4SRichard Purdie *
5e8b6f7f4SRichard Purdie * Copyright (c) 2005 Richard Purdie
6e8b6f7f4SRichard Purdie */
7e8b6f7f4SRichard Purdie
8e8b6f7f4SRichard Purdie #include <linux/module.h>
9e8b6f7f4SRichard Purdie #include <linux/stat.h>
10e8b6f7f4SRichard Purdie #include <linux/init.h>
11e8b6f7f4SRichard Purdie #include <linux/kernel.h>
12e8b6f7f4SRichard Purdie #include <linux/delay.h>
13158f1e95SRandy Dunlap #include <linux/gpio.h>
14e0bf102eSHaojian Zhuang #include <linux/gpio-pxa.h>
15e8b6f7f4SRichard Purdie #include <linux/interrupt.h>
16e8b6f7f4SRichard Purdie #include <linux/platform_device.h>
1714fca61aSRussell King #include <linux/apm-emulation.h>
18*09eadda2SArnd Bergmann #include <linux/spi/corgi_lcd.h>
1914fca61aSRussell King
20e8b6f7f4SRichard Purdie #include <asm/irq.h>
21e8b6f7f4SRichard Purdie #include <asm/mach-types.h>
22e8b6f7f4SRichard Purdie
23726d8c96SArnd Bergmann #include "spitz.h"
244c25c5d2SArnd Bergmann #include "pxa27x.h"
254c25c5d2SArnd Bergmann #include "sharpsl_pm.h"
26b6eede11SEric Miao
27b6eede11SEric Miao #include "generic.h"
28e8b6f7f4SRichard Purdie
29f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
30f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
31f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
32f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
33f8703dc8SRichard Purdie #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
34f8703dc8SRichard Purdie #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
35f8703dc8SRichard Purdie
36e8b6f7f4SRichard Purdie static int spitz_last_ac_status;
37e8b6f7f4SRichard Purdie
38b6eede11SEric Miao static struct gpio spitz_charger_gpios[] = {
39b6eede11SEric Miao { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" },
40b6eede11SEric Miao { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" },
419bf448c6SHaojian Zhuang { SPITZ_GPIO_AC_IN, GPIOF_IN, "Charger Detection" },
42b6eede11SEric Miao { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" },
43b6eede11SEric Miao { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" },
44b6eede11SEric Miao { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" },
45b6eede11SEric Miao };
46b6eede11SEric Miao
spitz_charger_init(void)47e8b6f7f4SRichard Purdie static void spitz_charger_init(void)
48e8b6f7f4SRichard Purdie {
49b6eede11SEric Miao gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios));
50e8b6f7f4SRichard Purdie }
51e8b6f7f4SRichard Purdie
spitz_measure_temp(int on)52e8b6f7f4SRichard Purdie static void spitz_measure_temp(int on)
53e8b6f7f4SRichard Purdie {
54fff14720SEric Miao gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on);
55e8b6f7f4SRichard Purdie }
56e8b6f7f4SRichard Purdie
spitz_charge(int on)57e8b6f7f4SRichard Purdie static void spitz_charge(int on)
58e8b6f7f4SRichard Purdie {
59e8b6f7f4SRichard Purdie if (on) {
60e8b6f7f4SRichard Purdie if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
61fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_B, 1);
62fff14720SEric Miao gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
63e8b6f7f4SRichard Purdie } else {
64fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_B, 0);
65fff14720SEric Miao gpio_set_value(SPITZ_GPIO_CHRG_ON, 0);
66e8b6f7f4SRichard Purdie }
67e8b6f7f4SRichard Purdie } else {
68fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_B, 0);
69fff14720SEric Miao gpio_set_value(SPITZ_GPIO_CHRG_ON, 1);
70e8b6f7f4SRichard Purdie }
71e8b6f7f4SRichard Purdie }
72e8b6f7f4SRichard Purdie
spitz_discharge(int on)73e8b6f7f4SRichard Purdie static void spitz_discharge(int on)
74e8b6f7f4SRichard Purdie {
75fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_A, on);
76e8b6f7f4SRichard Purdie }
77e8b6f7f4SRichard Purdie
78e8b6f7f4SRichard Purdie /* HACK - For unknown reasons, accurate voltage readings are only made with a load
79e8b6f7f4SRichard Purdie on the power bus which the green led on spitz provides */
spitz_discharge1(int on)80e8b6f7f4SRichard Purdie static void spitz_discharge1(int on)
81e8b6f7f4SRichard Purdie {
82fff14720SEric Miao gpio_set_value(SPITZ_GPIO_LED_GREEN, on);
83e8b6f7f4SRichard Purdie }
84e8b6f7f4SRichard Purdie
85510fcb0dSMarko Katic static unsigned long gpio18_config = GPIO18_GPIO;
86b6eede11SEric Miao
spitz_presuspend(void)87e8b6f7f4SRichard Purdie static void spitz_presuspend(void)
88e8b6f7f4SRichard Purdie {
89b7557de4SRichard Purdie spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
90e8b6f7f4SRichard Purdie
91e8b6f7f4SRichard Purdie /* GPIO Sleep Register */
92e8b6f7f4SRichard Purdie PGSR0 = 0x00144018;
93e8b6f7f4SRichard Purdie PGSR1 = 0x00EF0000;
94e8b6f7f4SRichard Purdie if (machine_is_akita()) {
95e8b6f7f4SRichard Purdie PGSR2 = 0x2121C000;
96e8b6f7f4SRichard Purdie PGSR3 = 0x00600400;
97e8b6f7f4SRichard Purdie } else {
98e8b6f7f4SRichard Purdie PGSR2 = 0x0121C000;
99e8b6f7f4SRichard Purdie PGSR3 = 0x00600000;
100e8b6f7f4SRichard Purdie }
101e8b6f7f4SRichard Purdie
102e8b6f7f4SRichard Purdie PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
103e8b6f7f4SRichard Purdie PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
104e8b6f7f4SRichard Purdie PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
105e8b6f7f4SRichard Purdie PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
106e8b6f7f4SRichard Purdie PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
107e8b6f7f4SRichard Purdie
108510fcb0dSMarko Katic pxa2xx_mfp_config(&gpio18_config, 1);
109b6eede11SEric Miao gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown");
110b6eede11SEric Miao gpio_free(18);
111e8b6f7f4SRichard Purdie
112e8b6f7f4SRichard Purdie PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
113e8b6f7f4SRichard Purdie PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
114e8b6f7f4SRichard Purdie PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
115e8b6f7f4SRichard Purdie PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
116b64b0b76SPavel Machek PKSR = 0xffffffff; /* clear */
117e8b6f7f4SRichard Purdie
118e8b6f7f4SRichard Purdie /* nRESET_OUT Disable */
119e8b6f7f4SRichard Purdie PSLR |= PSLR_SL_ROD;
120e8b6f7f4SRichard Purdie
121e8b6f7f4SRichard Purdie /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
122e8b6f7f4SRichard Purdie PCFR = PCFR_GPR_EN | PCFR_OPDE;
123e8b6f7f4SRichard Purdie }
124e8b6f7f4SRichard Purdie
spitz_postsuspend(void)125e8b6f7f4SRichard Purdie static void spitz_postsuspend(void)
126e8b6f7f4SRichard Purdie {
127e8b6f7f4SRichard Purdie }
128e8b6f7f4SRichard Purdie
spitz_should_wakeup(unsigned int resume_on_alarm)129e8b6f7f4SRichard Purdie static int spitz_should_wakeup(unsigned int resume_on_alarm)
130e8b6f7f4SRichard Purdie {
131e8b6f7f4SRichard Purdie int is_resume = 0;
132b7557de4SRichard Purdie int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
133e8b6f7f4SRichard Purdie
134e8b6f7f4SRichard Purdie if (spitz_last_ac_status != acin) {
135e8b6f7f4SRichard Purdie if (acin) {
136e8b6f7f4SRichard Purdie /* charge on */
137e8b6f7f4SRichard Purdie sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
138e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
139e8b6f7f4SRichard Purdie } else {
140e8b6f7f4SRichard Purdie /* charge off */
141e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Removed\n");
142b7557de4SRichard Purdie sharpsl_pm_led(SHARPSL_LED_OFF);
143b7557de4SRichard Purdie sharpsl_pm.machinfo->charge(0);
144e8b6f7f4SRichard Purdie sharpsl_pm.charge_mode = CHRG_OFF;
145e8b6f7f4SRichard Purdie }
146e8b6f7f4SRichard Purdie spitz_last_ac_status = acin;
147e8b6f7f4SRichard Purdie /* Return to suspend as this must be what we were woken for */
148e8b6f7f4SRichard Purdie return 0;
149e8b6f7f4SRichard Purdie }
150e8b6f7f4SRichard Purdie
151e8b6f7f4SRichard Purdie if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
152e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);
153e8b6f7f4SRichard Purdie
154e8b6f7f4SRichard Purdie if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
155e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);
156e8b6f7f4SRichard Purdie
157e8b6f7f4SRichard Purdie if (resume_on_alarm && (PEDR & PWER_RTC))
158e8b6f7f4SRichard Purdie is_resume |= PWER_RTC;
159e8b6f7f4SRichard Purdie
160e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
161e8b6f7f4SRichard Purdie return is_resume;
162e8b6f7f4SRichard Purdie }
163e8b6f7f4SRichard Purdie
spitz_charger_wakeup(void)164ca26475bSRobert Jarzmik static bool spitz_charger_wakeup(void)
165e8b6f7f4SRichard Purdie {
166ca26475bSRobert Jarzmik return !gpio_get_value(SPITZ_GPIO_KEY_INT) ||
167ca26475bSRobert Jarzmik gpio_get_value(SPITZ_GPIO_SYNC);
168e8b6f7f4SRichard Purdie }
169e8b6f7f4SRichard Purdie
spitzpm_read_devdata(int type)170a9ae9c52SArnd Bergmann static unsigned long spitzpm_read_devdata(int type)
171e8b6f7f4SRichard Purdie {
172b7557de4SRichard Purdie switch (type) {
173b7557de4SRichard Purdie case SHARPSL_STATUS_ACIN:
1749bf448c6SHaojian Zhuang return !gpio_get_value(SPITZ_GPIO_AC_IN);
175b7557de4SRichard Purdie case SHARPSL_STATUS_LOCK:
17605732d7eSEric Miao return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock);
177b7557de4SRichard Purdie case SHARPSL_STATUS_CHRGFULL:
17805732d7eSEric Miao return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull);
179b7557de4SRichard Purdie case SHARPSL_STATUS_FATAL:
18005732d7eSEric Miao return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal);
181b7557de4SRichard Purdie case SHARPSL_ACIN_VOLT:
182b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
183b7557de4SRichard Purdie case SHARPSL_BATT_TEMP:
184b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
185b7557de4SRichard Purdie case SHARPSL_BATT_VOLT:
186b7557de4SRichard Purdie default:
187b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
188b7557de4SRichard Purdie }
189e8b6f7f4SRichard Purdie }
190e8b6f7f4SRichard Purdie
191e8b6f7f4SRichard Purdie struct sharpsl_charger_machinfo spitz_pm_machinfo = {
192e8b6f7f4SRichard Purdie .init = spitz_charger_init,
193d48898a3SDmitry Eremin-Solenikov .exit = NULL,
194e8b6f7f4SRichard Purdie .gpio_batlock = SPITZ_GPIO_BAT_COVER,
195e8b6f7f4SRichard Purdie .gpio_acin = SPITZ_GPIO_AC_IN,
196e8b6f7f4SRichard Purdie .gpio_batfull = SPITZ_GPIO_CHRG_FULL,
197f8703dc8SRichard Purdie .batfull_irq = 1,
198e8b6f7f4SRichard Purdie .gpio_fatal = SPITZ_GPIO_FATAL_BAT,
199e8b6f7f4SRichard Purdie .discharge = spitz_discharge,
200e8b6f7f4SRichard Purdie .discharge1 = spitz_discharge1,
201e8b6f7f4SRichard Purdie .charge = spitz_charge,
202e8b6f7f4SRichard Purdie .measure_temp = spitz_measure_temp,
203e8b6f7f4SRichard Purdie .presuspend = spitz_presuspend,
204e8b6f7f4SRichard Purdie .postsuspend = spitz_postsuspend,
205b7557de4SRichard Purdie .read_devdata = spitzpm_read_devdata,
206e8b6f7f4SRichard Purdie .charger_wakeup = spitz_charger_wakeup,
207e8b6f7f4SRichard Purdie .should_wakeup = spitz_should_wakeup,
2085cbff960SDmitry Baryshkov #if defined(CONFIG_LCD_CORGI)
2095cbff960SDmitry Baryshkov .backlight_limit = corgi_lcd_limit_intensity,
21002a8e769SRussell King #endif
211f8703dc8SRichard Purdie .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
212f8703dc8SRichard Purdie .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
213f8703dc8SRichard Purdie .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
214f8703dc8SRichard Purdie .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
215f8703dc8SRichard Purdie .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
216f8703dc8SRichard Purdie .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
217e8b6f7f4SRichard Purdie .bat_levels = 40,
2180ba01ebcSPavel Machek .bat_levels_noac = sharpsl_battery_levels_noac,
2190ba01ebcSPavel Machek .bat_levels_acin = sharpsl_battery_levels_acin,
220e8b6f7f4SRichard Purdie .status_high_acin = 188,
221e8b6f7f4SRichard Purdie .status_low_acin = 178,
222e8b6f7f4SRichard Purdie .status_high_noac = 185,
223e8b6f7f4SRichard Purdie .status_low_noac = 175,
224e8b6f7f4SRichard Purdie };
225e8b6f7f4SRichard Purdie
226e8b6f7f4SRichard Purdie static struct platform_device *spitzpm_device;
227e8b6f7f4SRichard Purdie
spitzpm_init(void)228351a102dSGreg Kroah-Hartman static int spitzpm_init(void)
229e8b6f7f4SRichard Purdie {
230e8b6f7f4SRichard Purdie int ret;
231e8b6f7f4SRichard Purdie
2325806d8abSDmitry Baryshkov if (!machine_is_spitz() && !machine_is_akita()
2335806d8abSDmitry Baryshkov && !machine_is_borzoi())
2345806d8abSDmitry Baryshkov return -ENODEV;
2355806d8abSDmitry Baryshkov
236e8b6f7f4SRichard Purdie spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
237e8b6f7f4SRichard Purdie if (!spitzpm_device)
238e8b6f7f4SRichard Purdie return -ENOMEM;
239e8b6f7f4SRichard Purdie
240e8b6f7f4SRichard Purdie spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
241e8b6f7f4SRichard Purdie ret = platform_device_add(spitzpm_device);
242e8b6f7f4SRichard Purdie
243e8b6f7f4SRichard Purdie if (ret)
244e8b6f7f4SRichard Purdie platform_device_put(spitzpm_device);
245e8b6f7f4SRichard Purdie
246e8b6f7f4SRichard Purdie return ret;
247e8b6f7f4SRichard Purdie }
248e8b6f7f4SRichard Purdie
spitzpm_exit(void)249e8b6f7f4SRichard Purdie static void spitzpm_exit(void)
250e8b6f7f4SRichard Purdie {
251e8b6f7f4SRichard Purdie platform_device_unregister(spitzpm_device);
252e8b6f7f4SRichard Purdie }
253e8b6f7f4SRichard Purdie
254e8b6f7f4SRichard Purdie module_init(spitzpm_init);
255e8b6f7f4SRichard Purdie module_exit(spitzpm_exit);
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