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linux/arch/arm/mach-s3c2410/h1940-bluetooth.c
Ben Dooks ec976d6eb0 [ARM] S3C24XX: GPIO: Move gpio functions out of <mach/hardware.h>
Move all the gpio functions out of <mach/hardware.h> as
this file is for defining the generic IO base addresses
for the kernel IO calls.

Make a new header <mach/gpio-fns.h> to take this and
include it via the chain from <linux/gpio.h> which is
what most of these files should be using (and will be
changed as soon as possible).

Note, this does make minor changes to some drivers but
should not mess up any pending merges.

CC: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
CC: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-18 16:25:40 +01:00

145 lines
3.2 KiB
C

/*
* 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 <linux/gpio.h>
#include <mach/regs-gpio.h>
#include <mach/hardware.h>
#include <mach/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_GPIO_OUTPUT);
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");