1 files changed, 157 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 00000000000..a5eeb62ce1c
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/h1940-bluetooth.c
@@ -0,0 +1,157 @@
+/*
+ * 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 <linux/rfkill.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/hardware.h>
+#include <mach/h1940-latch.h>
+#include <mach/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(-EINVAL, 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(-EINVAL, 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 __devinit 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,
+};
+
+
+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");