1e8b6f7f4SRichard Purdie /* 2e8b6f7f4SRichard Purdie * Battery and Power Management code for the Sharp SL-Cxx00 3e8b6f7f4SRichard Purdie * 4e8b6f7f4SRichard Purdie * Copyright (c) 2005 Richard Purdie 5e8b6f7f4SRichard Purdie * 6e8b6f7f4SRichard Purdie * This program is free software; you can redistribute it and/or modify 7e8b6f7f4SRichard Purdie * it under the terms of the GNU General Public License version 2 as 8e8b6f7f4SRichard Purdie * published by the Free Software Foundation. 9e8b6f7f4SRichard Purdie * 10e8b6f7f4SRichard Purdie */ 11e8b6f7f4SRichard Purdie 12e8b6f7f4SRichard Purdie #include <linux/module.h> 13e8b6f7f4SRichard Purdie #include <linux/stat.h> 14e8b6f7f4SRichard Purdie #include <linux/init.h> 15e8b6f7f4SRichard Purdie #include <linux/kernel.h> 16e8b6f7f4SRichard Purdie #include <linux/delay.h> 17158f1e95SRandy Dunlap #include <linux/gpio.h> 18e0bf102eSHaojian Zhuang #include <linux/gpio-pxa.h> 19e8b6f7f4SRichard Purdie #include <linux/interrupt.h> 20e8b6f7f4SRichard Purdie #include <linux/platform_device.h> 2114fca61aSRussell King #include <linux/apm-emulation.h> 2214fca61aSRussell King 23e8b6f7f4SRichard Purdie #include <asm/irq.h> 24e8b6f7f4SRichard Purdie #include <asm/mach-types.h> 25a09e64fbSRussell King #include <mach/hardware.h> 26e8b6f7f4SRichard Purdie 27a09e64fbSRussell King #include <mach/spitz.h> 28b6eede11SEric Miao #include <mach/pxa27x.h> 2904e4ad23SEric Miao #include <mach/sharpsl_pm.h> 30b6eede11SEric Miao 31b6eede11SEric Miao #include "generic.h" 32e8b6f7f4SRichard Purdie 33f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ 34f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ 35f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ 36f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ 37f8703dc8SRichard Purdie #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ 38f8703dc8SRichard Purdie #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ 39f8703dc8SRichard Purdie 40e8b6f7f4SRichard Purdie static int spitz_last_ac_status; 41e8b6f7f4SRichard Purdie 42b6eede11SEric Miao static struct gpio spitz_charger_gpios[] = { 43b6eede11SEric Miao { SPITZ_GPIO_KEY_INT, GPIOF_IN, "Keyboard Interrupt" }, 44b6eede11SEric Miao { SPITZ_GPIO_SYNC, GPIOF_IN, "Sync" }, 459bf448c6SHaojian Zhuang { SPITZ_GPIO_AC_IN, GPIOF_IN, "Charger Detection" }, 46b6eede11SEric Miao { SPITZ_GPIO_ADC_TEMP_ON, GPIOF_OUT_INIT_LOW, "ADC Temp On" }, 47b6eede11SEric Miao { SPITZ_GPIO_JK_B, GPIOF_OUT_INIT_LOW, "JK B" }, 48b6eede11SEric Miao { SPITZ_GPIO_CHRG_ON, GPIOF_OUT_INIT_LOW, "Charger On" }, 49b6eede11SEric Miao }; 50b6eede11SEric Miao 51e8b6f7f4SRichard Purdie static void spitz_charger_init(void) 52e8b6f7f4SRichard Purdie { 53b6eede11SEric Miao gpio_request_array(ARRAY_AND_SIZE(spitz_charger_gpios)); 54e8b6f7f4SRichard Purdie } 55e8b6f7f4SRichard Purdie 56e8b6f7f4SRichard Purdie static void spitz_measure_temp(int on) 57e8b6f7f4SRichard Purdie { 58fff14720SEric Miao gpio_set_value(SPITZ_GPIO_ADC_TEMP_ON, on); 59e8b6f7f4SRichard Purdie } 60e8b6f7f4SRichard Purdie 61e8b6f7f4SRichard Purdie static void spitz_charge(int on) 62e8b6f7f4SRichard Purdie { 63e8b6f7f4SRichard Purdie if (on) { 64e8b6f7f4SRichard Purdie if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { 65fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_B, 1); 66fff14720SEric Miao gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); 67e8b6f7f4SRichard Purdie } else { 68fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_B, 0); 69fff14720SEric Miao gpio_set_value(SPITZ_GPIO_CHRG_ON, 0); 70e8b6f7f4SRichard Purdie } 71e8b6f7f4SRichard Purdie } else { 72fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_B, 0); 73fff14720SEric Miao gpio_set_value(SPITZ_GPIO_CHRG_ON, 1); 74e8b6f7f4SRichard Purdie } 75e8b6f7f4SRichard Purdie } 76e8b6f7f4SRichard Purdie 77e8b6f7f4SRichard Purdie static void spitz_discharge(int on) 78e8b6f7f4SRichard Purdie { 79fff14720SEric Miao gpio_set_value(SPITZ_GPIO_JK_A, on); 80e8b6f7f4SRichard Purdie } 81e8b6f7f4SRichard Purdie 82e8b6f7f4SRichard Purdie /* HACK - For unknown reasons, accurate voltage readings are only made with a load 83e8b6f7f4SRichard Purdie on the power bus which the green led on spitz provides */ 84e8b6f7f4SRichard Purdie static void spitz_discharge1(int on) 85e8b6f7f4SRichard Purdie { 86fff14720SEric Miao gpio_set_value(SPITZ_GPIO_LED_GREEN, on); 87e8b6f7f4SRichard Purdie } 88e8b6f7f4SRichard Purdie 89b6eede11SEric Miao static unsigned long gpio18_config[] = { 90b6eede11SEric Miao GPIO18_RDY, 91b6eede11SEric Miao GPIO18_GPIO, 92b6eede11SEric Miao }; 93b6eede11SEric Miao 94e8b6f7f4SRichard Purdie static void spitz_presuspend(void) 95e8b6f7f4SRichard Purdie { 96b7557de4SRichard Purdie spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); 97e8b6f7f4SRichard Purdie 98e8b6f7f4SRichard Purdie /* GPIO Sleep Register */ 99e8b6f7f4SRichard Purdie PGSR0 = 0x00144018; 100e8b6f7f4SRichard Purdie PGSR1 = 0x00EF0000; 101e8b6f7f4SRichard Purdie if (machine_is_akita()) { 102e8b6f7f4SRichard Purdie PGSR2 = 0x2121C000; 103e8b6f7f4SRichard Purdie PGSR3 = 0x00600400; 104e8b6f7f4SRichard Purdie } else { 105e8b6f7f4SRichard Purdie PGSR2 = 0x0121C000; 106e8b6f7f4SRichard Purdie PGSR3 = 0x00600000; 107e8b6f7f4SRichard Purdie } 108e8b6f7f4SRichard Purdie 109e8b6f7f4SRichard Purdie PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; 110e8b6f7f4SRichard Purdie PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; 111e8b6f7f4SRichard Purdie PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; 112e8b6f7f4SRichard Purdie PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; 113e8b6f7f4SRichard Purdie PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); 114e8b6f7f4SRichard Purdie 115b6eede11SEric Miao pxa2xx_mfp_config(&gpio18_config[0], 1); 116b6eede11SEric Miao gpio_request_one(18, GPIOF_OUT_INIT_HIGH, "Unknown"); 117b6eede11SEric Miao gpio_free(18); 118e8b6f7f4SRichard Purdie 119e8b6f7f4SRichard Purdie PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); 120e8b6f7f4SRichard Purdie PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); 121e8b6f7f4SRichard Purdie PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; 122e8b6f7f4SRichard Purdie PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); 123b64b0b76SPavel Machek PKSR = 0xffffffff; /* clear */ 124e8b6f7f4SRichard Purdie 125e8b6f7f4SRichard Purdie /* nRESET_OUT Disable */ 126e8b6f7f4SRichard Purdie PSLR |= PSLR_SL_ROD; 127e8b6f7f4SRichard Purdie 128e8b6f7f4SRichard Purdie /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ 129e8b6f7f4SRichard Purdie PCFR = PCFR_GPR_EN | PCFR_OPDE; 130e8b6f7f4SRichard Purdie } 131e8b6f7f4SRichard Purdie 132e8b6f7f4SRichard Purdie static void spitz_postsuspend(void) 133e8b6f7f4SRichard Purdie { 134b6eede11SEric Miao pxa2xx_mfp_config(&gpio18_config[1], 1); 135e8b6f7f4SRichard Purdie } 136e8b6f7f4SRichard Purdie 137e8b6f7f4SRichard Purdie static int spitz_should_wakeup(unsigned int resume_on_alarm) 138e8b6f7f4SRichard Purdie { 139e8b6f7f4SRichard Purdie int is_resume = 0; 140b7557de4SRichard Purdie int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); 141e8b6f7f4SRichard Purdie 142e8b6f7f4SRichard Purdie if (spitz_last_ac_status != acin) { 143e8b6f7f4SRichard Purdie if (acin) { 144e8b6f7f4SRichard Purdie /* charge on */ 145e8b6f7f4SRichard Purdie sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; 146e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); 147e8b6f7f4SRichard Purdie } else { 148e8b6f7f4SRichard Purdie /* charge off */ 149e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Removed\n"); 150b7557de4SRichard Purdie sharpsl_pm_led(SHARPSL_LED_OFF); 151b7557de4SRichard Purdie sharpsl_pm.machinfo->charge(0); 152e8b6f7f4SRichard Purdie sharpsl_pm.charge_mode = CHRG_OFF; 153e8b6f7f4SRichard Purdie } 154e8b6f7f4SRichard Purdie spitz_last_ac_status = acin; 155e8b6f7f4SRichard Purdie /* Return to suspend as this must be what we were woken for */ 156e8b6f7f4SRichard Purdie return 0; 157e8b6f7f4SRichard Purdie } 158e8b6f7f4SRichard Purdie 159e8b6f7f4SRichard Purdie if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) 160e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); 161e8b6f7f4SRichard Purdie 162e8b6f7f4SRichard Purdie if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) 163e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); 164e8b6f7f4SRichard Purdie 165e8b6f7f4SRichard Purdie if (resume_on_alarm && (PEDR & PWER_RTC)) 166e8b6f7f4SRichard Purdie is_resume |= PWER_RTC; 167e8b6f7f4SRichard Purdie 168e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume); 169e8b6f7f4SRichard Purdie return is_resume; 170e8b6f7f4SRichard Purdie } 171e8b6f7f4SRichard Purdie 172e8b6f7f4SRichard Purdie static unsigned long spitz_charger_wakeup(void) 173e8b6f7f4SRichard Purdie { 1749bf448c6SHaojian Zhuang unsigned long ret; 1759bf448c6SHaojian Zhuang ret = (!gpio_get_value(SPITZ_GPIO_KEY_INT) 1769bf448c6SHaojian Zhuang << GPIO_bit(SPITZ_GPIO_KEY_INT)) 1779bf448c6SHaojian Zhuang | (!gpio_get_value(SPITZ_GPIO_SYNC) 1789bf448c6SHaojian Zhuang << GPIO_bit(SPITZ_GPIO_SYNC)); 1799bf448c6SHaojian Zhuang return ret; 180e8b6f7f4SRichard Purdie } 181e8b6f7f4SRichard Purdie 182b7557de4SRichard Purdie unsigned long spitzpm_read_devdata(int type) 183e8b6f7f4SRichard Purdie { 184b7557de4SRichard Purdie switch (type) { 185b7557de4SRichard Purdie case SHARPSL_STATUS_ACIN: 1869bf448c6SHaojian Zhuang return !gpio_get_value(SPITZ_GPIO_AC_IN); 187b7557de4SRichard Purdie case SHARPSL_STATUS_LOCK: 18805732d7eSEric Miao return gpio_get_value(sharpsl_pm.machinfo->gpio_batlock); 189b7557de4SRichard Purdie case SHARPSL_STATUS_CHRGFULL: 19005732d7eSEric Miao return gpio_get_value(sharpsl_pm.machinfo->gpio_batfull); 191b7557de4SRichard Purdie case SHARPSL_STATUS_FATAL: 19205732d7eSEric Miao return gpio_get_value(sharpsl_pm.machinfo->gpio_fatal); 193b7557de4SRichard Purdie case SHARPSL_ACIN_VOLT: 194b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); 195b7557de4SRichard Purdie case SHARPSL_BATT_TEMP: 196b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); 197b7557de4SRichard Purdie case SHARPSL_BATT_VOLT: 198b7557de4SRichard Purdie default: 199b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); 200b7557de4SRichard Purdie } 201e8b6f7f4SRichard Purdie } 202e8b6f7f4SRichard Purdie 203e8b6f7f4SRichard Purdie struct sharpsl_charger_machinfo spitz_pm_machinfo = { 204e8b6f7f4SRichard Purdie .init = spitz_charger_init, 205d48898a3SDmitry Eremin-Solenikov .exit = NULL, 206e8b6f7f4SRichard Purdie .gpio_batlock = SPITZ_GPIO_BAT_COVER, 207e8b6f7f4SRichard Purdie .gpio_acin = SPITZ_GPIO_AC_IN, 208e8b6f7f4SRichard Purdie .gpio_batfull = SPITZ_GPIO_CHRG_FULL, 209f8703dc8SRichard Purdie .batfull_irq = 1, 210e8b6f7f4SRichard Purdie .gpio_fatal = SPITZ_GPIO_FATAL_BAT, 211e8b6f7f4SRichard Purdie .discharge = spitz_discharge, 212e8b6f7f4SRichard Purdie .discharge1 = spitz_discharge1, 213e8b6f7f4SRichard Purdie .charge = spitz_charge, 214e8b6f7f4SRichard Purdie .measure_temp = spitz_measure_temp, 215e8b6f7f4SRichard Purdie .presuspend = spitz_presuspend, 216e8b6f7f4SRichard Purdie .postsuspend = spitz_postsuspend, 217b7557de4SRichard Purdie .read_devdata = spitzpm_read_devdata, 218e8b6f7f4SRichard Purdie .charger_wakeup = spitz_charger_wakeup, 219e8b6f7f4SRichard Purdie .should_wakeup = spitz_should_wakeup, 2205cbff960SDmitry Baryshkov #if defined(CONFIG_LCD_CORGI) 2215cbff960SDmitry Baryshkov .backlight_limit = corgi_lcd_limit_intensity, 22202a8e769SRussell King #endif 223f8703dc8SRichard Purdie .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, 224f8703dc8SRichard Purdie .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, 225f8703dc8SRichard Purdie .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, 226f8703dc8SRichard Purdie .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, 227f8703dc8SRichard Purdie .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, 228f8703dc8SRichard Purdie .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, 229e8b6f7f4SRichard Purdie .bat_levels = 40, 2300ba01ebcSPavel Machek .bat_levels_noac = sharpsl_battery_levels_noac, 2310ba01ebcSPavel Machek .bat_levels_acin = sharpsl_battery_levels_acin, 232e8b6f7f4SRichard Purdie .status_high_acin = 188, 233e8b6f7f4SRichard Purdie .status_low_acin = 178, 234e8b6f7f4SRichard Purdie .status_high_noac = 185, 235e8b6f7f4SRichard Purdie .status_low_noac = 175, 236e8b6f7f4SRichard Purdie }; 237e8b6f7f4SRichard Purdie 238e8b6f7f4SRichard Purdie static struct platform_device *spitzpm_device; 239e8b6f7f4SRichard Purdie 240e8b6f7f4SRichard Purdie static int __devinit spitzpm_init(void) 241e8b6f7f4SRichard Purdie { 242e8b6f7f4SRichard Purdie int ret; 243e8b6f7f4SRichard Purdie 2445806d8abSDmitry Baryshkov if (!machine_is_spitz() && !machine_is_akita() 2455806d8abSDmitry Baryshkov && !machine_is_borzoi()) 2465806d8abSDmitry Baryshkov return -ENODEV; 2475806d8abSDmitry Baryshkov 248e8b6f7f4SRichard Purdie spitzpm_device = platform_device_alloc("sharpsl-pm", -1); 249e8b6f7f4SRichard Purdie if (!spitzpm_device) 250e8b6f7f4SRichard Purdie return -ENOMEM; 251e8b6f7f4SRichard Purdie 252e8b6f7f4SRichard Purdie spitzpm_device->dev.platform_data = &spitz_pm_machinfo; 253e8b6f7f4SRichard Purdie ret = platform_device_add(spitzpm_device); 254e8b6f7f4SRichard Purdie 255e8b6f7f4SRichard Purdie if (ret) 256e8b6f7f4SRichard Purdie platform_device_put(spitzpm_device); 257e8b6f7f4SRichard Purdie 258e8b6f7f4SRichard Purdie return ret; 259e8b6f7f4SRichard Purdie } 260e8b6f7f4SRichard Purdie 261e8b6f7f4SRichard Purdie static void spitzpm_exit(void) 262e8b6f7f4SRichard Purdie { 263e8b6f7f4SRichard Purdie platform_device_unregister(spitzpm_device); 264e8b6f7f4SRichard Purdie } 265e8b6f7f4SRichard Purdie 266e8b6f7f4SRichard Purdie module_init(spitzpm_init); 267e8b6f7f4SRichard Purdie module_exit(spitzpm_exit); 268