forked from Minki/linux
dc38e2ad53
Related to d3930614e6.
RCSR is only present on PXA2xx CPUs, not on PXA3xx CPUs. Therefore,
we should not be unconditionally writing to RCSR from generic code.
Since we now clear the RCSR status from the SoC specific PXA PM code
and before reset in the arch_reset() function, the duplication in
the corgi, poodle, spitz and tosa code can be removed.
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
252 lines
6.9 KiB
C
252 lines
6.9 KiB
C
/*
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* Battery and Power Management code for the Sharp SL-Cxx00
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*
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* Copyright (c) 2005 Richard Purdie
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/stat.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/apm-emulation.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <asm/hardware.h>
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#include <asm/hardware/scoop.h>
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#include <asm/arch/sharpsl.h>
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#include <asm/arch/spitz.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/pxa2xx-gpio.h>
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#include "sharpsl.h"
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#define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */
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#define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */
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#define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */
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#define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */
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#define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */
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#define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */
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static int spitz_last_ac_status;
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static void spitz_charger_init(void)
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{
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pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN);
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pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN);
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sharpsl_pm_pxa_init();
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}
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static void spitz_measure_temp(int on)
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{
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if (on)
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set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);
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else
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);
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}
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static void spitz_charge(int on)
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{
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if (on) {
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if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {
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set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
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} else {
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
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}
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} else {
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);
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set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);
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}
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}
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static void spitz_discharge(int on)
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{
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if (on)
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set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);
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else
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);
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}
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/* HACK - For unknown reasons, accurate voltage readings are only made with a load
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on the power bus which the green led on spitz provides */
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static void spitz_discharge1(int on)
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{
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if (on)
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set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
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else
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reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
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}
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static void spitz_presuspend(void)
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{
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spitz_last_ac_status = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
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/* GPIO Sleep Register */
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PGSR0 = 0x00144018;
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PGSR1 = 0x00EF0000;
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if (machine_is_akita()) {
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PGSR2 = 0x2121C000;
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PGSR3 = 0x00600400;
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} else {
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PGSR2 = 0x0121C000;
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PGSR3 = 0x00600000;
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}
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PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
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PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
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PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
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PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
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PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);
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pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH);
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PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);
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PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
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PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
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PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
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PKSR = 0xffffffff; // clear
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/* nRESET_OUT Disable */
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PSLR |= PSLR_SL_ROD;
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/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
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PCFR = PCFR_GPR_EN | PCFR_OPDE;
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}
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static void spitz_postsuspend(void)
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{
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pxa_gpio_mode(GPIO18_RDY_MD);
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pxa_gpio_mode(10 | GPIO_IN);
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}
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static int spitz_should_wakeup(unsigned int resume_on_alarm)
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{
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int is_resume = 0;
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int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
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if (spitz_last_ac_status != acin) {
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if (acin) {
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/* charge on */
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sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
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dev_dbg(sharpsl_pm.dev, "AC Inserted\n");
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} else {
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/* charge off */
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dev_dbg(sharpsl_pm.dev, "AC Removed\n");
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sharpsl_pm_led(SHARPSL_LED_OFF);
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sharpsl_pm.machinfo->charge(0);
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sharpsl_pm.charge_mode = CHRG_OFF;
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}
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spitz_last_ac_status = acin;
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/* Return to suspend as this must be what we were woken for */
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return 0;
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}
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if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))
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is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);
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if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))
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is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);
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if (resume_on_alarm && (PEDR & PWER_RTC))
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is_resume |= PWER_RTC;
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dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);
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return is_resume;
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}
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static unsigned long spitz_charger_wakeup(void)
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{
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return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));
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}
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unsigned long spitzpm_read_devdata(int type)
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{
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switch(type) {
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case SHARPSL_STATUS_ACIN:
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return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);
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case SHARPSL_STATUS_LOCK:
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return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batlock);
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case SHARPSL_STATUS_CHRGFULL:
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return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_batfull);
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case SHARPSL_STATUS_FATAL:
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return READ_GPIO_BIT(sharpsl_pm.machinfo->gpio_fatal);
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case SHARPSL_ACIN_VOLT:
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return sharpsl_pm_pxa_read_max1111(MAX1111_ACIN_VOLT);
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case SHARPSL_BATT_TEMP:
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return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_TEMP);
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case SHARPSL_BATT_VOLT:
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default:
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return sharpsl_pm_pxa_read_max1111(MAX1111_BATT_VOLT);
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}
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}
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struct sharpsl_charger_machinfo spitz_pm_machinfo = {
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.init = spitz_charger_init,
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.exit = sharpsl_pm_pxa_remove,
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.gpio_batlock = SPITZ_GPIO_BAT_COVER,
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.gpio_acin = SPITZ_GPIO_AC_IN,
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.gpio_batfull = SPITZ_GPIO_CHRG_FULL,
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.batfull_irq = 1,
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.gpio_fatal = SPITZ_GPIO_FATAL_BAT,
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.discharge = spitz_discharge,
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.discharge1 = spitz_discharge1,
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.charge = spitz_charge,
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.measure_temp = spitz_measure_temp,
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.presuspend = spitz_presuspend,
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.postsuspend = spitz_postsuspend,
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.read_devdata = spitzpm_read_devdata,
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.charger_wakeup = spitz_charger_wakeup,
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.should_wakeup = spitz_should_wakeup,
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.backlight_limit = corgibl_limit_intensity,
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.charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
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.charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
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.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
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.charge_acin_low = SHARPSL_CHARGE_ON_ACIN_LOW,
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.fatal_acin_volt = SHARPSL_FATAL_ACIN_VOLT,
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.fatal_noacin_volt= SHARPSL_FATAL_NOACIN_VOLT,
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.bat_levels = 40,
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.bat_levels_noac = spitz_battery_levels_noac,
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.bat_levels_acin = spitz_battery_levels_acin,
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.status_high_acin = 188,
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.status_low_acin = 178,
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.status_high_noac = 185,
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.status_low_noac = 175,
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};
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static struct platform_device *spitzpm_device;
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static int __devinit spitzpm_init(void)
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{
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int ret;
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spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
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if (!spitzpm_device)
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return -ENOMEM;
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spitzpm_device->dev.platform_data = &spitz_pm_machinfo;
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ret = platform_device_add(spitzpm_device);
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if (ret)
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platform_device_put(spitzpm_device);
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return ret;
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}
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static void spitzpm_exit(void)
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{
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platform_device_unregister(spitzpm_device);
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}
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module_init(spitzpm_init);
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module_exit(spitzpm_exit);
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