1 files changed, 141 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/h1940-bluetooth.c b/arch/arm/mach-s3c24xx/h1940-bluetooth.c
new file mode 100644
index 000000000..186b53216
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/h1940-bluetooth.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-1.0+
+//
+// Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org>
+//
+//	    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 <linux/rfkill.h>
+
+#include <plat/gpio-cfg.h>
+#include <mach/hardware.h>
+#include <mach/regs-gpio.h>
+#include <mach/gpio-samsung.h>
+
+#include "h1940.h"
+
+#define DRV_NAME "h1940-bt"
+
+/* Bluetooth control */
+static void h1940bt_enable(int on)
+{
+	if (on) {
+		/* Power on the chip */
+		gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 1);
+		/* Reset the chip */
+		mdelay(10);
+
+		gpio_set_value(S3C2410_GPH(1), 1);
+		mdelay(10);
+		gpio_set_value(S3C2410_GPH(1), 0);
+
+		h1940_led_blink_set(NULL, GPIO_LED_BLINK, NULL, NULL);
+	}
+	else {
+		gpio_set_value(S3C2410_GPH(1), 1);
+		mdelay(10);
+		gpio_set_value(S3C2410_GPH(1), 0);
+		mdelay(10);
+		gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 0);
+
+		h1940_led_blink_set(NULL, GPIO_LED_NO_BLINK_LOW, NULL, NULL);
+	}
+}
+
+static int h1940bt_set_block(void *data, bool blocked)
+{
+	h1940bt_enable(!blocked);
+	return 0;
+}
+
+static const struct rfkill_ops h1940bt_rfkill_ops = {
+	.set_block = h1940bt_set_block,
+};
+
+static int h1940bt_probe(struct platform_device *pdev)
+{
+	struct rfkill *rfk;
+	int ret = 0;
+
+	ret = gpio_request(S3C2410_GPH(1), dev_name(&pdev->dev));
+	if (ret) {
+		dev_err(&pdev->dev, "could not get GPH1\n");
+		return ret;
+	}
+
+	ret = gpio_request(H1940_LATCH_BLUETOOTH_POWER, dev_name(&pdev->dev));
+	if (ret) {
+		gpio_free(S3C2410_GPH(1));
+		dev_err(&pdev->dev, "could not get BT_POWER\n");
+		return ret;
+	}
+
+	/* Configures BT serial port GPIOs */
+	s3c_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
+	s3c_gpio_setpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
+	s3c_gpio_cfgpin(S3C2410_GPH(1), S3C2410_GPIO_OUTPUT);
+	s3c_gpio_setpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
+	s3c_gpio_cfgpin(S3C2410_GPH(2), S3C2410_GPH2_TXD0);
+	s3c_gpio_setpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
+	s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
+	s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
+
+	rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
+			&h1940bt_rfkill_ops, NULL);
+	if (!rfk) {
+		ret = -ENOMEM;
+		goto err_rfk_alloc;
+	}
+
+	ret = rfkill_register(rfk);
+	if (ret)
+		goto err_rfkill;
+
+	platform_set_drvdata(pdev, rfk);
+
+	return 0;
+
+err_rfkill:
+	rfkill_destroy(rfk);
+err_rfk_alloc:
+	return ret;
+}
+
+static int h1940bt_remove(struct platform_device *pdev)
+{
+	struct rfkill *rfk = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	gpio_free(S3C2410_GPH(1));
+
+	if (rfk) {
+		rfkill_unregister(rfk);
+		rfkill_destroy(rfk);
+	}
+	rfk = NULL;
+
+	h1940bt_enable(0);
+
+	return 0;
+}
+
+
+static struct platform_driver h1940bt_driver = {
+	.driver		= {
+		.name	= DRV_NAME,
+	},
+	.probe		= h1940bt_probe,
+	.remove		= h1940bt_remove,
+};
+
+module_platform_driver(h1940bt_driver);
+
+MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
+MODULE_DESCRIPTION("Driver for the iPAQ H1940 bluetooth chip");
+MODULE_LICENSE("GPL");