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Commit 7fdc7849 authored by Arnaud Patard's avatar Arnaud Patard Committed by Russell King
Browse files

[ARM] 4359/3: H1940: Add bluetooth support 



This patch adds a small driver responsible for configuring the UART used
for the bluetooth chip and for enabling the bluetooth chipset.
Additionnaly, can trigger a led if the H1940 led driver is enabled.

Signed-off-by: default avatarArnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent b8b6970b

arch/arm/mach-s3c2410/Makefile

+1 −1
Original line number Original line Diff line number Diff line
@@ -20,7 +20,7 @@ obj-$(CONFIG_S3C2410_CLOCK) += clock.o 
# Machine support

# Machine support





obj-$(CONFIG_ARCH_SMDK2410)	+= mach-smdk2410.o

obj-$(CONFIG_ARCH_SMDK2410)	+= mach-smdk2410.o

obj-$(CONFIG_ARCH_H1940)	+= mach-h1940.o

obj-$(CONFIG_ARCH_H1940)	+= mach-h1940.o h1940-bluetooth.o

obj-$(CONFIG_PM_H1940)		+= pm-h1940.o

obj-$(CONFIG_PM_H1940)		+= pm-h1940.o

obj-$(CONFIG_MACH_N30)		+= mach-n30.o

obj-$(CONFIG_MACH_N30)		+= mach-n30.o

obj-$(CONFIG_ARCH_BAST)		+= mach-bast.o usb-simtec.o

obj-$(CONFIG_ARCH_BAST)		+= mach-bast.o usb-simtec.o

arch/arm/mach-s3c2410/h1940-bluetooth.c

0 → 100644
+142 −0
Original line number Original line Diff line number Diff line 
/*

 * arch/arm/mach-s3c2410/h1940-bluetooth.c

 * Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org>

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file COPYING in the main directory of this archive for

 * more details.

 *

 *	    S3C2410 bluetooth "driver"

 *

 */



#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/delay.h>

#include <linux/string.h>

#include <linux/ctype.h>

#include <linux/leds.h>

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

#include <asm/hardware.h>

#include <asm/arch/h1940-latch.h>



#define DRV_NAME              "h1940-bt"



#ifdef CONFIG_LEDS_H1940

DEFINE_LED_TRIGGER(bt_led_trigger);

#endif



static int state;



/* Bluetooth control */

static void h1940bt_enable(int on)

{

	if (on) {

#ifdef CONFIG_LEDS_H1940

		/* flashing Blue */

		led_trigger_event(bt_led_trigger, LED_HALF);

#endif



		/* Power on the chip */

		h1940_latch_control(0, H1940_LATCH_BLUETOOTH_POWER);

		/* Reset the chip */

		mdelay(10);

		s3c2410_gpio_setpin(S3C2410_GPH1, 1);

		mdelay(10);

		s3c2410_gpio_setpin(S3C2410_GPH1, 0);



		state = 1;

	}

	else {

#ifdef CONFIG_LEDS_H1940

		led_trigger_event(bt_led_trigger, 0);

#endif



		s3c2410_gpio_setpin(S3C2410_GPH1, 1);

		mdelay(10);

		s3c2410_gpio_setpin(S3C2410_GPH1, 0);

		mdelay(10);

		h1940_latch_control(H1940_LATCH_BLUETOOTH_POWER, 0);



		state = 0;

	}

}



static ssize_t h1940bt_show(struct device *dev, struct device_attribute *attr, char *buf)

{

	return snprintf(buf, PAGE_SIZE, "%d\n", state);

}



static ssize_t h1940bt_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)

{

	int new_state;

	char *endp;



	new_state = simple_strtoul(buf, &endp, 0);

	if (*endp && !isspace(*endp))

		return -EINVAL;



	h1940bt_enable(new_state);



	return count;

}

static DEVICE_ATTR(enable, 0644,

		h1940bt_show,

		h1940bt_store);



static int __init h1940bt_probe(struct platform_device *pdev)

{

	/* Configures BT serial port GPIOs */

	s3c2410_gpio_cfgpin(S3C2410_GPH0, S3C2410_GPH0_nCTS0);

	s3c2410_gpio_pullup(S3C2410_GPH0, 1);

	s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP);

	s3c2410_gpio_pullup(S3C2410_GPH1, 1);

	s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPH2_TXD0);

	s3c2410_gpio_pullup(S3C2410_GPH2, 1);

	s3c2410_gpio_cfgpin(S3C2410_GPH3, S3C2410_GPH3_RXD0);

	s3c2410_gpio_pullup(S3C2410_GPH3, 1);



#ifdef CONFIG_LEDS_H1940

	led_trigger_register_simple("h1940-bluetooth", &bt_led_trigger);

#endif



	/* disable BT by default */

	h1940bt_enable(0);



	return device_create_file(&pdev->dev, &dev_attr_enable);

}



static int h1940bt_remove(struct platform_device *pdev)

{

#ifdef CONFIG_LEDS_H1940

	led_trigger_unregister_simple(bt_led_trigger);

#endif

	return 0;

}





static struct platform_driver h1940bt_driver = {

	.driver		= {

		.name	= DRV_NAME,

	},

	.probe		= h1940bt_probe,

	.remove		= h1940bt_remove,

};





static int __init h1940bt_init(void)

{

	return platform_driver_register(&h1940bt_driver);

}



static void __exit h1940bt_exit(void)

{

	platform_driver_unregister(&h1940bt_driver);

}



module_init(h1940bt_init);

module_exit(h1940bt_exit);



MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");

MODULE_DESCRIPTION("Driver for the iPAQ H1940 bluetooth chip");

MODULE_LICENSE("GPL");

arch/arm/mach-s3c2410/mach-h1940.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -177,6 +177,11 @@ static struct platform_device s3c_device_leds = { 
	.id               = -1,

	.id               = -1,

};

};





static struct platform_device s3c_device_bluetooth = {

	.name             = "h1940-bt",

	.id               = -1,

};



static struct platform_device *h1940_devices[] __initdata = {

static struct platform_device *h1940_devices[] __initdata = {

	&s3c_device_usb,

	&s3c_device_usb,

	&s3c_device_lcd,

	&s3c_device_lcd,
@@ -185,6 +190,7 @@ static struct platform_device *h1940_devices[] __initdata = { 
	&s3c_device_iis,

	&s3c_device_iis,

	&s3c_device_usbgadget,

	&s3c_device_usbgadget,

	&s3c_device_leds,

	&s3c_device_leds,

	&s3c_device_bluetooth,

};

};





static void __init h1940_map_io(void)

static void __init h1940_map_io(void)