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Commit e8b6f7f4 authored by Richard Purdie's avatar Richard Purdie Committed by Russell King
Browse files

[ARM] 3159/1: SharpSL: Add PM device driver for the SL-Cx00 machines. 



Patch from Richard Purdie

Add a SharpSL PM device driver for the SL-Cxx00 machines.

Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent d72f25b0

arch/arm/mach-pxa/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o 
obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o

obj-$(CONFIG_ARCH_PXA_IDP) += idp.o

obj-$(CONFIG_PXA_SHARP_C7xx)	+= corgi.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o corgi_pm.o

obj-$(CONFIG_PXA_SHARP_Cxx00)	+= spitz.o corgi_ssp.o corgi_lcd.o

obj-$(CONFIG_PXA_SHARP_Cxx00)	+= spitz.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o spitz_pm.o

obj-$(CONFIG_MACH_POODLE)	+= poodle.o

obj-$(CONFIG_MACH_TOSA)         += tosa.o

arch/arm/mach-pxa/spitz_pm.c

0 → 100644
+233 −0
Original line number Diff line number Diff line 
/*

 * Battery and Power Management code for the Sharp SL-Cxx00

 *

 * Copyright (c) 2005 Richard Purdie

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 */



#include <linux/module.h>

#include <linux/stat.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/platform_device.h>

#include <asm/apm.h>

#include <asm/irq.h>

#include <asm/mach-types.h>

#include <asm/hardware.h>

#include <asm/hardware/scoop.h>



#include <asm/arch/sharpsl.h>

#include <asm/arch/spitz.h>

#include <asm/arch/pxa-regs.h>

#include "sharpsl.h"



static int spitz_last_ac_status;



static void spitz_charger_init(void)

{

	pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN);

	pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN);

}



static void spitz_charge_led(int val)

{

	if (val == SHARPSL_LED_ERROR) {

		dev_dbg(sharpsl_pm.dev, "Charge LED Error\n");

	} else if (val == SHARPSL_LED_ON) {

		dev_dbg(sharpsl_pm.dev, "Charge LED On\n");

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);

	} else {

		dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);

	}

}



static void spitz_measure_temp(int on)

{

	if (on)

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);

	else

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_ADC_TEMP_ON);

}



static void spitz_charge(int on)

{

	if (on) {

		if (sharpsl_pm.flags & SHARPSL_SUSPENDED) {

			set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);

			reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);

		} else {

			reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);

			reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);

		}

	} else {

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_B);

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CHRG_ON);

	}

}



static void spitz_discharge(int on)

{

	if (on)

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);

	else

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_JK_A);

}



/* HACK - For unknown reasons, accurate voltage readings are only made with a load

   on the power bus which the green led on spitz provides */

static void spitz_discharge1(int on)

{

	if (on)

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);

	else

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);

}



static void spitz_presuspend(void)

{

	spitz_last_ac_status = STATUS_AC_IN();



	/* GPIO Sleep Register */

	PGSR0 = 0x00144018;

	PGSR1 = 0x00EF0000;

	if (machine_is_akita()) {

		PGSR2 = 0x2121C000;

		PGSR3 = 0x00600400;

	} else {

		PGSR2 = 0x0121C000;

		PGSR3 = 0x00600000;

	}



	PGSR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;

	PGSR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;

	PGSR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;

	PGSR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;

	PGSR2 |= GPIO_bit(SPITZ_GPIO_KEY_STROBE0);



	pxa_gpio_mode(GPIO18_RDY|GPIO_OUT | GPIO_DFLT_HIGH);



	PRER = GPIO_bit(SPITZ_GPIO_KEY_INT);

	PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);

	PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;

	PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);

	PKSR = 0xffffffff; // clear



	/* nRESET_OUT Disable */

	PSLR |= PSLR_SL_ROD;



	/* Clear reset status */

	RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;



	/* Stop 3.6MHz and drive HIGH to PCMCIA and CS */

	PCFR = PCFR_GPR_EN | PCFR_OPDE;

}



static void spitz_postsuspend(void)

{

	pxa_gpio_mode(GPIO18_RDY_MD);

	pxa_gpio_mode(10 | GPIO_IN);

}



static int spitz_should_wakeup(unsigned int resume_on_alarm)

{

	int is_resume = 0;

	int acin = STATUS_AC_IN();



	if (spitz_last_ac_status != acin) {

		if (acin) {

			/* charge on */

			sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;

			dev_dbg(sharpsl_pm.dev, "AC Inserted\n");

		} else {

			/* charge off */

			dev_dbg(sharpsl_pm.dev, "AC Removed\n");

			CHARGE_LED_OFF();

			CHARGE_OFF();

			sharpsl_pm.charge_mode = CHRG_OFF;

		}

		spitz_last_ac_status = acin;

		/* Return to suspend as this must be what we were woken for */

		return 0;

	}



	if (PEDR & GPIO_bit(SPITZ_GPIO_KEY_INT))

		is_resume |= GPIO_bit(SPITZ_GPIO_KEY_INT);



	if (PKSR & GPIO_bit(SPITZ_GPIO_SYNC))

		is_resume |= GPIO_bit(SPITZ_GPIO_SYNC);



	if (resume_on_alarm && (PEDR & PWER_RTC))

		is_resume |= PWER_RTC;



	dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);

	return is_resume;

}



static unsigned long spitz_charger_wakeup(void)

{

	return (~GPLR0 & GPIO_bit(SPITZ_GPIO_KEY_INT)) | (GPLR0 & GPIO_bit(SPITZ_GPIO_SYNC));

}



static int spitz_acin_status(void)

{

	return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);

}



struct sharpsl_charger_machinfo spitz_pm_machinfo = {

	.init             = spitz_charger_init,

	.gpio_batlock     = SPITZ_GPIO_BAT_COVER,

	.gpio_acin        = SPITZ_GPIO_AC_IN,

	.gpio_batfull     = SPITZ_GPIO_CHRG_FULL,

	.gpio_fatal       = SPITZ_GPIO_FATAL_BAT,

	.status_acin      = spitz_acin_status,

	.discharge        = spitz_discharge,

	.discharge1       = spitz_discharge1,

	.charge           = spitz_charge,

	.chargeled        = spitz_charge_led,

	.measure_temp     = spitz_measure_temp,

	.presuspend       = spitz_presuspend,

	.postsuspend      = spitz_postsuspend,

	.charger_wakeup   = spitz_charger_wakeup,

	.should_wakeup    = spitz_should_wakeup,

	.bat_levels       = 40,

	.bat_levels_noac  = spitz_battery_levels_noac,

	.bat_levels_acin  = spitz_battery_levels_acin,

	.status_high_acin = 188,

	.status_low_acin  = 178,

	.status_high_noac = 185,

	.status_low_noac  = 175,

};



static struct platform_device *spitzpm_device;



static int __devinit spitzpm_init(void)

{

	int ret;



	spitzpm_device = platform_device_alloc("sharpsl-pm", -1);

	if (!spitzpm_device)

		return -ENOMEM;



	spitzpm_device->dev.platform_data = &spitz_pm_machinfo;

	ret = platform_device_add(spitzpm_device);



	if (ret)

		platform_device_put(spitzpm_device);



	return ret;

}



static void spitzpm_exit(void)

{

 	platform_device_unregister(spitzpm_device);

}



module_init(spitzpm_init);

module_exit(spitzpm_exit);