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364374121b
Previously the custom GPIO header for the S3C24xx would in turn bring in the custom pin control implementation from <plat/gpio-cfg.h>. This is not good as it mixes up two subsystems and makes the dependencies hard to track. Make the dependency explicit by explicitly including the pin control header where needed. Reported-by: Arnd Bergmann <arnd@arndb.de> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Mark Brown <broonie@kernel.org> Cc: linux-samsung-soc@vger.kernel.org Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
148 lines
3.2 KiB
C
148 lines
3.2 KiB
C
/*
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* arch/arm/mach-s3c2410/h1940-bluetooth.c
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* Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*
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* S3C2410 bluetooth "driver"
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*
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/leds.h>
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#include <linux/gpio.h>
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#include <linux/rfkill.h>
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#include <plat/gpio-cfg.h>
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#include <mach/hardware.h>
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#include <mach/regs-gpio.h>
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#include <mach/gpio-samsung.h>
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#include "h1940.h"
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#define DRV_NAME "h1940-bt"
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/* Bluetooth control */
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static void h1940bt_enable(int on)
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{
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if (on) {
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/* Power on the chip */
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gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 1);
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/* Reset the chip */
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mdelay(10);
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gpio_set_value(S3C2410_GPH(1), 1);
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mdelay(10);
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gpio_set_value(S3C2410_GPH(1), 0);
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h1940_led_blink_set(-EINVAL, GPIO_LED_BLINK, NULL, NULL);
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}
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else {
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gpio_set_value(S3C2410_GPH(1), 1);
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mdelay(10);
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gpio_set_value(S3C2410_GPH(1), 0);
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mdelay(10);
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gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 0);
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h1940_led_blink_set(-EINVAL, GPIO_LED_NO_BLINK_LOW, NULL, NULL);
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}
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}
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static int h1940bt_set_block(void *data, bool blocked)
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{
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h1940bt_enable(!blocked);
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return 0;
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}
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static const struct rfkill_ops h1940bt_rfkill_ops = {
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.set_block = h1940bt_set_block,
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};
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static int h1940bt_probe(struct platform_device *pdev)
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{
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struct rfkill *rfk;
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int ret = 0;
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ret = gpio_request(S3C2410_GPH(1), dev_name(&pdev->dev));
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if (ret) {
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dev_err(&pdev->dev, "could not get GPH1\n");
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return ret;
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}
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ret = gpio_request(H1940_LATCH_BLUETOOTH_POWER, dev_name(&pdev->dev));
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if (ret) {
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gpio_free(S3C2410_GPH(1));
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dev_err(&pdev->dev, "could not get BT_POWER\n");
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return ret;
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}
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/* Configures BT serial port GPIOs */
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s3c_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
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s3c_gpio_setpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
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s3c_gpio_cfgpin(S3C2410_GPH(1), S3C2410_GPIO_OUTPUT);
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s3c_gpio_setpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
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s3c_gpio_cfgpin(S3C2410_GPH(2), S3C2410_GPH2_TXD0);
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s3c_gpio_setpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
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s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
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s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
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rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
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&h1940bt_rfkill_ops, NULL);
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if (!rfk) {
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ret = -ENOMEM;
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goto err_rfk_alloc;
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}
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ret = rfkill_register(rfk);
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if (ret)
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goto err_rfkill;
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platform_set_drvdata(pdev, rfk);
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return 0;
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err_rfkill:
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rfkill_destroy(rfk);
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err_rfk_alloc:
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return ret;
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}
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static int h1940bt_remove(struct platform_device *pdev)
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{
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struct rfkill *rfk = platform_get_drvdata(pdev);
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platform_set_drvdata(pdev, NULL);
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gpio_free(S3C2410_GPH(1));
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if (rfk) {
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rfkill_unregister(rfk);
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rfkill_destroy(rfk);
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}
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rfk = NULL;
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h1940bt_enable(0);
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return 0;
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}
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static struct platform_driver h1940bt_driver = {
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.driver = {
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.name = DRV_NAME,
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},
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.probe = h1940bt_probe,
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.remove = h1940bt_remove,
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};
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module_platform_driver(h1940bt_driver);
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MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
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MODULE_DESCRIPTION("Driver for the iPAQ H1940 bluetooth chip");
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MODULE_LICENSE("GPL");
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