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> 17e8b6f7f4SRichard Purdie #include <linux/interrupt.h> 18e8b6f7f4SRichard Purdie #include <linux/platform_device.h> 1914fca61aSRussell King #include <linux/apm-emulation.h> 2014fca61aSRussell King 21e8b6f7f4SRichard Purdie #include <asm/irq.h> 22e8b6f7f4SRichard Purdie #include <asm/mach-types.h> 23e8b6f7f4SRichard Purdie #include <asm/hardware.h> 24e8b6f7f4SRichard Purdie #include <asm/hardware/scoop.h> 25e8b6f7f4SRichard Purdie 26e8b6f7f4SRichard Purdie #include <asm/arch/sharpsl.h> 27e8b6f7f4SRichard Purdie #include <asm/arch/spitz.h> 28e8b6f7f4SRichard Purdie #include <asm/arch/pxa-regs.h> 29a683b14dSeric miao #include <asm/arch/pxa2xx-gpio.h> 30e8b6f7f4SRichard Purdie #include "sharpsl.h" 31e8b6f7f4SRichard Purdie 32f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ 33f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ 34f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ 35f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ 36f8703dc8SRichard Purdie #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ 37f8703dc8SRichard Purdie #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ 38f8703dc8SRichard Purdie 39e8b6f7f4SRichard Purdie static int spitz_last_ac_status; 40e8b6f7f4SRichard Purdie 41e8b6f7f4SRichard Purdie static void spitz_charger_init(void) 42e8b6f7f4SRichard Purdie { 43e8b6f7f4SRichard Purdie pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); 44e8b6f7f4SRichard Purdie pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); 45b7557de4SRichard Purdie sharpsl_pm_pxa_init(); 46e8b6f7f4SRichard Purdie } 47e8b6f7f4SRichard Purdie 48e8b6f7f4SRichard Purdie static void spitz_measure_temp(int on) 49e8b6f7f4SRichard Purdie { 50e8b6f7f4SRichard Purdie if (on) 51e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); 52e8b6f7f4SRichard Purdie else 53e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); 54e8b6f7f4SRichard Purdie } 55e8b6f7f4SRichard Purdie 56e8b6f7f4SRichard Purdie static void spitz_charge(int on) 57e8b6f7f4SRichard Purdie { 58e8b6f7f4SRichard Purdie if (on) { 59e8b6f7f4SRichard Purdie if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { 60e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); 61e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); 62e8b6f7f4SRichard Purdie } else { 63e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); 64e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); 65e8b6f7f4SRichard Purdie } 66e8b6f7f4SRichard Purdie } else { 67e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); 68e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); 69e8b6f7f4SRichard Purdie } 70e8b6f7f4SRichard Purdie } 71e8b6f7f4SRichard Purdie 72e8b6f7f4SRichard Purdie static void spitz_discharge(int on) 73e8b6f7f4SRichard Purdie { 74e8b6f7f4SRichard Purdie if (on) 75e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); 76e8b6f7f4SRichard Purdie else 77e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); 78e8b6f7f4SRichard Purdie } 79e8b6f7f4SRichard Purdie 80e8b6f7f4SRichard Purdie /* HACK - For unknown reasons, accurate voltage readings are only made with a load 81e8b6f7f4SRichard Purdie on the power bus which the green led on spitz provides */ 82e8b6f7f4SRichard Purdie static void spitz_discharge1(int on) 83e8b6f7f4SRichard Purdie { 84e8b6f7f4SRichard Purdie if (on) 85e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); 86e8b6f7f4SRichard Purdie else 87e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); 88e8b6f7f4SRichard Purdie } 89e8b6f7f4SRichard Purdie 90e8b6f7f4SRichard Purdie static void spitz_presuspend(void) 91e8b6f7f4SRichard Purdie { 92b7557de4SRichard Purdie spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); 93e8b6f7f4SRichard Purdie 94e8b6f7f4SRichard Purdie /* GPIO Sleep Register */ 95e8b6f7f4SRichard Purdie PGSR0 = 0x00144018; 96e8b6f7f4SRichard Purdie PGSR1 = 0x00EF0000; 97e8b6f7f4SRichard Purdie if (machine_is_akita()) { 98e8b6f7f4SRichard Purdie PGSR2 = 0x2121C000; 99e8b6f7f4SRichard Purdie PGSR3 = 0x00600400; 100e8b6f7f4SRichard Purdie } else { 101e8b6f7f4SRichard Purdie PGSR2 = 0x0121C000; 102e8b6f7f4SRichard Purdie PGSR3 = 0x00600000; 103e8b6f7f4SRichard Purdie } 104e8b6f7f4SRichard Purdie 105e8b6f7f4SRichard Purdie PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; 106e8b6f7f4SRichard Purdie PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; 107e8b6f7f4SRichard Purdie PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; 108e8b6f7f4SRichard Purdie PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; 109e8b6f7f4SRichard Purdie PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); 110e8b6f7f4SRichard Purdie 111e8b6f7f4SRichard Purdie pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); 112e8b6f7f4SRichard Purdie 113e8b6f7f4SRichard Purdie PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); 114e8b6f7f4SRichard Purdie PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); 115e8b6f7f4SRichard Purdie PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; 116e8b6f7f4SRichard Purdie PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); 117e8b6f7f4SRichard Purdie PKSR = 0xffffffff; // clear 118e8b6f7f4SRichard Purdie 119e8b6f7f4SRichard Purdie /* nRESET_OUT Disable */ 120e8b6f7f4SRichard Purdie PSLR |= PSLR_SL_ROD; 121e8b6f7f4SRichard Purdie 122e8b6f7f4SRichard Purdie /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ 123e8b6f7f4SRichard Purdie PCFR = PCFR_GPR_EN | PCFR_OPDE; 124e8b6f7f4SRichard Purdie } 125e8b6f7f4SRichard Purdie 126e8b6f7f4SRichard Purdie static void spitz_postsuspend(void) 127e8b6f7f4SRichard Purdie { 128e8b6f7f4SRichard Purdie pxa_gpio_mode(GPIO18_RDY_MD); 129e8b6f7f4SRichard Purdie pxa_gpio_mode(10 | GPIO_IN); 130e8b6f7f4SRichard Purdie } 131e8b6f7f4SRichard Purdie 132e8b6f7f4SRichard Purdie static int spitz_should_wakeup(unsigned int resume_on_alarm) 133e8b6f7f4SRichard Purdie { 134e8b6f7f4SRichard Purdie int is_resume = 0; 135b7557de4SRichard Purdie int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); 136e8b6f7f4SRichard Purdie 137e8b6f7f4SRichard Purdie if (spitz_last_ac_status != acin) { 138e8b6f7f4SRichard Purdie if (acin) { 139e8b6f7f4SRichard Purdie /* charge on */ 140e8b6f7f4SRichard Purdie sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; 141e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); 142e8b6f7f4SRichard Purdie } else { 143e8b6f7f4SRichard Purdie /* charge off */ 144e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Removed\n"); 145b7557de4SRichard Purdie sharpsl_pm_led(SHARPSL_LED_OFF); 146b7557de4SRichard Purdie sharpsl_pm.machinfo->charge(0); 147e8b6f7f4SRichard Purdie sharpsl_pm.charge_mode = CHRG_OFF; 148e8b6f7f4SRichard Purdie } 149e8b6f7f4SRichard Purdie spitz_last_ac_status = acin; 150e8b6f7f4SRichard Purdie /* Return to suspend as this must be what we were woken for */ 151e8b6f7f4SRichard Purdie return 0; 152e8b6f7f4SRichard Purdie } 153e8b6f7f4SRichard Purdie 154e8b6f7f4SRichard Purdie if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) 155e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); 156e8b6f7f4SRichard Purdie 157e8b6f7f4SRichard Purdie if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) 158e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); 159e8b6f7f4SRichard Purdie 160e8b6f7f4SRichard Purdie if (resume_on_alarm && (PEDR & PWER_RTC)) 161e8b6f7f4SRichard Purdie is_resume |= PWER_RTC; 162e8b6f7f4SRichard Purdie 163e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); 164e8b6f7f4SRichard Purdie return is_resume; 165e8b6f7f4SRichard Purdie } 166e8b6f7f4SRichard Purdie 167e8b6f7f4SRichard Purdie static unsigned long spitz_charger_wakeup(void) 168e8b6f7f4SRichard Purdie { 169e8b6f7f4SRichard Purdie return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); 170e8b6f7f4SRichard Purdie } 171e8b6f7f4SRichard Purdie 172b7557de4SRichard Purdie unsigned long spitzpm_read_devdata(int type) 173e8b6f7f4SRichard Purdie { 174b7557de4SRichard Purdie switch(type) { 175b7557de4SRichard Purdie case SHARPSL_STATUS_ACIN: 176e8b6f7f4SRichard Purdie return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); 177b7557de4SRichard Purdie case SHARPSL_STATUS_LOCK: 178b7557de4SRichard Purdie return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock); 179b7557de4SRichard Purdie case SHARPSL_STATUS_CHRGFULL: 180b7557de4SRichard Purdie return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull); 181b7557de4SRichard Purdie case SHARPSL_STATUS_FATAL: 182b7557de4SRichard Purdie return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal); 183b7557de4SRichard Purdie case SHARPSL_ACIN_VOLT: 184b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); 185b7557de4SRichard Purdie case SHARPSL_BATT_TEMP: 186b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); 187b7557de4SRichard Purdie case SHARPSL_BATT_VOLT: 188b7557de4SRichard Purdie default: 189b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); 190b7557de4SRichard Purdie } 191e8b6f7f4SRichard Purdie } 192e8b6f7f4SRichard Purdie 193e8b6f7f4SRichard Purdie struct sharpsl_charger_machinfo spitz_pm_machinfo = { 194e8b6f7f4SRichard Purdie .init = spitz_charger_init, 195b7557de4SRichard Purdie .exit = sharpsl_pm_pxa_remove, 196e8b6f7f4SRichard Purdie .gpio_batlock = SPITZ_GPIO_BAT_COVER, 197e8b6f7f4SRichard Purdie .gpio_acin = SPITZ_GPIO_AC_IN, 198e8b6f7f4SRichard Purdie .gpio_batfull = SPITZ_GPIO_CHRG_FULL, 199f8703dc8SRichard Purdie .batfull_irq = 1, 200e8b6f7f4SRichard Purdie .gpio_fatal = SPITZ_GPIO_FATAL_BAT, 201e8b6f7f4SRichard Purdie .discharge = spitz_discharge, 202e8b6f7f4SRichard Purdie .discharge1 = spitz_discharge1, 203e8b6f7f4SRichard Purdie .charge = spitz_charge, 204e8b6f7f4SRichard Purdie .measure_temp = spitz_measure_temp, 205e8b6f7f4SRichard Purdie .presuspend = spitz_presuspend, 206e8b6f7f4SRichard Purdie .postsuspend = spitz_postsuspend, 207b7557de4SRichard Purdie .read_devdata = spitzpm_read_devdata, 208e8b6f7f4SRichard Purdie .charger_wakeup = spitz_charger_wakeup, 209e8b6f7f4SRichard Purdie .should_wakeup = spitz_should_wakeup, 21002a8e769SRussell King #ifdef CONFIG_BACKLIGHT_CORGI 211f8703dc8SRichard Purdie .backlight_limit = corgibl_limit_intensity, 21202a8e769SRussell King #endif 213f8703dc8SRichard Purdie .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, 214f8703dc8SRichard Purdie .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, 215f8703dc8SRichard Purdie .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, 216f8703dc8SRichard Purdie .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, 217f8703dc8SRichard Purdie .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, 218f8703dc8SRichard Purdie .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, 219e8b6f7f4SRichard Purdie .bat_levels = 40, 220e8b6f7f4SRichard Purdie .bat_levels_noac = spitz_battery_levels_noac, 221e8b6f7f4SRichard Purdie .bat_levels_acin = spitz_battery_levels_acin, 222e8b6f7f4SRichard Purdie .status_high_acin = 188, 223e8b6f7f4SRichard Purdie .status_low_acin = 178, 224e8b6f7f4SRichard Purdie .status_high_noac = 185, 225e8b6f7f4SRichard Purdie .status_low_noac = 175, 226e8b6f7f4SRichard Purdie }; 227e8b6f7f4SRichard Purdie 228e8b6f7f4SRichard Purdie static struct platform_device *spitzpm_device; 229e8b6f7f4SRichard Purdie 230e8b6f7f4SRichard Purdie static int __devinit spitzpm_init(void) 231e8b6f7f4SRichard Purdie { 232e8b6f7f4SRichard Purdie int ret; 233e8b6f7f4SRichard Purdie 234e8b6f7f4SRichard Purdie spitzpm_device = platform_device_alloc("sharpsl-pm", -1); 235e8b6f7f4SRichard Purdie if (!spitzpm_device) 236e8b6f7f4SRichard Purdie return -ENOMEM; 237e8b6f7f4SRichard Purdie 238e8b6f7f4SRichard Purdie spitzpm_device->dev.platform_data = &spitz_pm_machinfo; 239e8b6f7f4SRichard Purdie ret = platform_device_add(spitzpm_device); 240e8b6f7f4SRichard Purdie 241e8b6f7f4SRichard Purdie if (ret) 242e8b6f7f4SRichard Purdie platform_device_put(spitzpm_device); 243e8b6f7f4SRichard Purdie 244e8b6f7f4SRichard Purdie return ret; 245e8b6f7f4SRichard Purdie } 246e8b6f7f4SRichard Purdie 247e8b6f7f4SRichard Purdie static void spitzpm_exit(void) 248e8b6f7f4SRichard Purdie { 249e8b6f7f4SRichard Purdie platform_device_unregister(spitzpm_device); 250e8b6f7f4SRichard Purdie } 251e8b6f7f4SRichard Purdie 252e8b6f7f4SRichard Purdie module_init(spitzpm_init); 253e8b6f7f4SRichard Purdie module_exit(spitzpm_exit); 254