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> 19e8b6f7f4SRichard Purdie #include <asm/apm.h> 20e8b6f7f4SRichard Purdie #include <asm/irq.h> 21e8b6f7f4SRichard Purdie #include <asm/mach-types.h> 22e8b6f7f4SRichard Purdie #include <asm/hardware.h> 23e8b6f7f4SRichard Purdie #include <asm/hardware/scoop.h> 24e8b6f7f4SRichard Purdie 25e8b6f7f4SRichard Purdie #include <asm/arch/sharpsl.h> 26e8b6f7f4SRichard Purdie #include <asm/arch/spitz.h> 27e8b6f7f4SRichard Purdie #include <asm/arch/pxa-regs.h> 28e8b6f7f4SRichard Purdie #include "sharpsl.h" 29e8b6f7f4SRichard Purdie 30f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ 31f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ 32f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ 33f8703dc8SRichard Purdie #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ 34f8703dc8SRichard Purdie #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ 35f8703dc8SRichard Purdie #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ 36f8703dc8SRichard Purdie 37e8b6f7f4SRichard Purdie static int spitz_last_ac_status; 38e8b6f7f4SRichard Purdie 39e8b6f7f4SRichard Purdie static void spitz_charger_init(void) 40e8b6f7f4SRichard Purdie { 41e8b6f7f4SRichard Purdie pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN); 42e8b6f7f4SRichard Purdie pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN); 43b7557de4SRichard Purdie sharpsl_pm_pxa_init(); 44e8b6f7f4SRichard Purdie } 45e8b6f7f4SRichard Purdie 46e8b6f7f4SRichard Purdie static void spitz_measure_temp(int on) 47e8b6f7f4SRichard Purdie { 48e8b6f7f4SRichard Purdie if (on) 49e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); 50e8b6f7f4SRichard Purdie else 51e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON); 52e8b6f7f4SRichard Purdie } 53e8b6f7f4SRichard Purdie 54e8b6f7f4SRichard Purdie static void spitz_charge(int on) 55e8b6f7f4SRichard Purdie { 56e8b6f7f4SRichard Purdie if (on) { 57e8b6f7f4SRichard Purdie if (sharpsl_pm.flags & SHARPSL_SUSPENDED) { 58e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); 59e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); 60e8b6f7f4SRichard Purdie } else { 61e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); 62e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); 63e8b6f7f4SRichard Purdie } 64e8b6f7f4SRichard Purdie } else { 65e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B); 66e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON); 67e8b6f7f4SRichard Purdie } 68e8b6f7f4SRichard Purdie } 69e8b6f7f4SRichard Purdie 70e8b6f7f4SRichard Purdie static void spitz_discharge(int on) 71e8b6f7f4SRichard Purdie { 72e8b6f7f4SRichard Purdie if (on) 73e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); 74e8b6f7f4SRichard Purdie else 75e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A); 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 */ 80e8b6f7f4SRichard Purdie static void spitz_discharge1(int on) 81e8b6f7f4SRichard Purdie { 82e8b6f7f4SRichard Purdie if (on) 83e8b6f7f4SRichard Purdie set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); 84e8b6f7f4SRichard Purdie else 85e8b6f7f4SRichard Purdie reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN); 86e8b6f7f4SRichard Purdie } 87e8b6f7f4SRichard Purdie 88e8b6f7f4SRichard Purdie static void spitz_presuspend(void) 89e8b6f7f4SRichard Purdie { 90b7557de4SRichard Purdie spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); 91e8b6f7f4SRichard Purdie 92e8b6f7f4SRichard Purdie /* GPIO Sleep Register */ 93e8b6f7f4SRichard Purdie PGSR0 = 0x00144018; 94e8b6f7f4SRichard Purdie PGSR1 = 0x00EF0000; 95e8b6f7f4SRichard Purdie if (machine_is_akita()) { 96e8b6f7f4SRichard Purdie PGSR2 = 0x2121C000; 97e8b6f7f4SRichard Purdie PGSR3 = 0x00600400; 98e8b6f7f4SRichard Purdie } else { 99e8b6f7f4SRichard Purdie PGSR2 = 0x0121C000; 100e8b6f7f4SRichard Purdie PGSR3 = 0x00600000; 101e8b6f7f4SRichard Purdie } 102e8b6f7f4SRichard Purdie 103e8b6f7f4SRichard Purdie PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT; 104e8b6f7f4SRichard Purdie PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT; 105e8b6f7f4SRichard Purdie PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT; 106e8b6f7f4SRichard Purdie PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT; 107e8b6f7f4SRichard Purdie PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0); 108e8b6f7f4SRichard Purdie 109e8b6f7f4SRichard Purdie pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH); 110e8b6f7f4SRichard Purdie 111e8b6f7f4SRichard Purdie PRER = GPIO_bit(SPITZ_GPIO_KEY_INT); 112e8b6f7f4SRichard Purdie PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); 113e8b6f7f4SRichard Purdie PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC; 114e8b6f7f4SRichard Purdie PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET); 115e8b6f7f4SRichard Purdie PKSR = 0xffffffff; // clear 116e8b6f7f4SRichard Purdie 117e8b6f7f4SRichard Purdie /* nRESET_OUT Disable */ 118e8b6f7f4SRichard Purdie PSLR |= PSLR_SL_ROD; 119e8b6f7f4SRichard Purdie 120e8b6f7f4SRichard Purdie /* Clear reset status */ 121e8b6f7f4SRichard Purdie RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; 122e8b6f7f4SRichard Purdie 123e8b6f7f4SRichard Purdie /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */ 124e8b6f7f4SRichard Purdie PCFR = PCFR_GPR_EN | PCFR_OPDE; 125e8b6f7f4SRichard Purdie } 126e8b6f7f4SRichard Purdie 127e8b6f7f4SRichard Purdie static void spitz_postsuspend(void) 128e8b6f7f4SRichard Purdie { 129e8b6f7f4SRichard Purdie pxa_gpio_mode(GPIO18_RDY_MD); 130e8b6f7f4SRichard Purdie pxa_gpio_mode(10 | GPIO_IN); 131e8b6f7f4SRichard Purdie } 132e8b6f7f4SRichard Purdie 133e8b6f7f4SRichard Purdie static int spitz_should_wakeup(unsigned int resume_on_alarm) 134e8b6f7f4SRichard Purdie { 135e8b6f7f4SRichard Purdie int is_resume = 0; 136b7557de4SRichard Purdie int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); 137e8b6f7f4SRichard Purdie 138e8b6f7f4SRichard Purdie if (spitz_last_ac_status != acin) { 139e8b6f7f4SRichard Purdie if (acin) { 140e8b6f7f4SRichard Purdie /* charge on */ 141e8b6f7f4SRichard Purdie sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; 142e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Inserted\n"); 143e8b6f7f4SRichard Purdie } else { 144e8b6f7f4SRichard Purdie /* charge off */ 145e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "AC Removed\n"); 146b7557de4SRichard Purdie sharpsl_pm_led(SHARPSL_LED_OFF); 147b7557de4SRichard Purdie sharpsl_pm.machinfo->charge(0); 148e8b6f7f4SRichard Purdie sharpsl_pm.charge_mode = CHRG_OFF; 149e8b6f7f4SRichard Purdie } 150e8b6f7f4SRichard Purdie spitz_last_ac_status = acin; 151e8b6f7f4SRichard Purdie /* Return to suspend as this must be what we were woken for */ 152e8b6f7f4SRichard Purdie return 0; 153e8b6f7f4SRichard Purdie } 154e8b6f7f4SRichard Purdie 155e8b6f7f4SRichard Purdie if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT)) 156e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT); 157e8b6f7f4SRichard Purdie 158e8b6f7f4SRichard Purdie if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC)) 159e8b6f7f4SRichard Purdie is_resume |= GPIO_bit(SPITZ_GPIO_SYNC); 160e8b6f7f4SRichard Purdie 161e8b6f7f4SRichard Purdie if (resume_on_alarm && (PEDR & PWER_RTC)) 162e8b6f7f4SRichard Purdie is_resume |= PWER_RTC; 163e8b6f7f4SRichard Purdie 164e8b6f7f4SRichard Purdie dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume); 165e8b6f7f4SRichard Purdie return is_resume; 166e8b6f7f4SRichard Purdie } 167e8b6f7f4SRichard Purdie 168e8b6f7f4SRichard Purdie static unsigned long spitz_charger_wakeup(void) 169e8b6f7f4SRichard Purdie { 170e8b6f7f4SRichard Purdie return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC)); 171e8b6f7f4SRichard Purdie } 172e8b6f7f4SRichard Purdie 173b7557de4SRichard Purdie unsigned long spitzpm_read_devdata(int type) 174e8b6f7f4SRichard Purdie { 175b7557de4SRichard Purdie switch(type) { 176b7557de4SRichard Purdie case SHARPSL_STATUS_ACIN: 177e8b6f7f4SRichard Purdie return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0); 178b7557de4SRichard Purdie case SHARPSL_STATUS_LOCK: 179b7557de4SRichard Purdie return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock); 180b7557de4SRichard Purdie case SHARPSL_STATUS_CHRGFULL: 181b7557de4SRichard Purdie return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull); 182b7557de4SRichard Purdie case SHARPSL_STATUS_FATAL: 183b7557de4SRichard Purdie return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal); 184b7557de4SRichard Purdie case SHARPSL_ACIN_VOLT: 185b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT); 186b7557de4SRichard Purdie case SHARPSL_BATT_TEMP: 187b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP); 188b7557de4SRichard Purdie case SHARPSL_BATT_VOLT: 189b7557de4SRichard Purdie default: 190b7557de4SRichard Purdie return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT); 191b7557de4SRichard Purdie } 192e8b6f7f4SRichard Purdie } 193e8b6f7f4SRichard Purdie 194e8b6f7f4SRichard Purdie struct sharpsl_charger_machinfo spitz_pm_machinfo = { 195e8b6f7f4SRichard Purdie .init = spitz_charger_init, 196b7557de4SRichard Purdie .exit = sharpsl_pm_pxa_remove, 197e8b6f7f4SRichard Purdie .gpio_batlock = SPITZ_GPIO_BAT_COVER, 198e8b6f7f4SRichard Purdie .gpio_acin = SPITZ_GPIO_AC_IN, 199e8b6f7f4SRichard Purdie .gpio_batfull = SPITZ_GPIO_CHRG_FULL, 200f8703dc8SRichard Purdie .batfull_irq = 1, 201e8b6f7f4SRichard Purdie .gpio_fatal = SPITZ_GPIO_FATAL_BAT, 202e8b6f7f4SRichard Purdie .discharge = spitz_discharge, 203e8b6f7f4SRichard Purdie .discharge1 = spitz_discharge1, 204e8b6f7f4SRichard Purdie .charge = spitz_charge, 205e8b6f7f4SRichard Purdie .measure_temp = spitz_measure_temp, 206e8b6f7f4SRichard Purdie .presuspend = spitz_presuspend, 207e8b6f7f4SRichard Purdie .postsuspend = spitz_postsuspend, 208b7557de4SRichard Purdie .read_devdata = spitzpm_read_devdata, 209e8b6f7f4SRichard Purdie .charger_wakeup = spitz_charger_wakeup, 210e8b6f7f4SRichard Purdie .should_wakeup = spitz_should_wakeup, 211f8703dc8SRichard Purdie .backlight_limit = corgibl_limit_intensity, 212f8703dc8SRichard Purdie .charge_on_volt = SHARPSL_CHARGE_ON_VOLT, 213f8703dc8SRichard Purdie .charge_on_temp = SHARPSL_CHARGE_ON_TEMP, 214f8703dc8SRichard Purdie .charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH, 215f8703dc8SRichard Purdie .charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW, 216f8703dc8SRichard Purdie .fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT, 217f8703dc8SRichard Purdie .fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT, 218e8b6f7f4SRichard Purdie .bat_levels = 40, 219e8b6f7f4SRichard Purdie .bat_levels_noac = spitz_battery_levels_noac, 220e8b6f7f4SRichard Purdie .bat_levels_acin = spitz_battery_levels_acin, 221e8b6f7f4SRichard Purdie .status_high_acin = 188, 222e8b6f7f4SRichard Purdie .status_low_acin = 178, 223e8b6f7f4SRichard Purdie .status_high_noac = 185, 224e8b6f7f4SRichard Purdie .status_low_noac = 175, 225e8b6f7f4SRichard Purdie }; 226e8b6f7f4SRichard Purdie 227e8b6f7f4SRichard Purdie static struct platform_device *spitzpm_device; 228e8b6f7f4SRichard Purdie 229e8b6f7f4SRichard Purdie static int __devinit spitzpm_init(void) 230e8b6f7f4SRichard Purdie { 231e8b6f7f4SRichard Purdie int ret; 232e8b6f7f4SRichard Purdie 233e8b6f7f4SRichard Purdie spitzpm_device = platform_device_alloc("sharpsl-pm", -1); 234e8b6f7f4SRichard Purdie if (!spitzpm_device) 235e8b6f7f4SRichard Purdie return -ENOMEM; 236e8b6f7f4SRichard Purdie 237e8b6f7f4SRichard Purdie spitzpm_device->dev.platform_data = &spitz_pm_machinfo; 238e8b6f7f4SRichard Purdie ret = platform_device_add(spitzpm_device); 239e8b6f7f4SRichard Purdie 240e8b6f7f4SRichard Purdie if (ret) 241e8b6f7f4SRichard Purdie platform_device_put(spitzpm_device); 242e8b6f7f4SRichard Purdie 243e8b6f7f4SRichard Purdie return ret; 244e8b6f7f4SRichard Purdie } 245e8b6f7f4SRichard Purdie 246e8b6f7f4SRichard Purdie static void spitzpm_exit(void) 247e8b6f7f4SRichard Purdie { 248e8b6f7f4SRichard Purdie platform_device_unregister(spitzpm_device); 249e8b6f7f4SRichard Purdie } 250e8b6f7f4SRichard Purdie 251e8b6f7f4SRichard Purdie module_init(spitzpm_init); 252e8b6f7f4SRichard Purdie module_exit(spitzpm_exit); 253