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authorOlof Johansson <olof@lixom.net>2012-03-08 08:53:14 -0800
committerOlof Johansson <olof@lixom.net>2012-03-08 08:53:14 -0800
commitd60d506e6baaf423148c458df3ece0c1d440dce4 (patch)
treec25c44e70ebaaddcbe39559df5c5cd260e956be4 /arch/arm/mach-s3c24xx/h1940-bluetooth.c
parent62f383435932ea3d271bee6b957de048452c1b16 (diff)
parent2e5ac9436645bb9fd2097868e228321f303c9c75 (diff)
Merge branch 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
* 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (24 commits) ARM: S3C24XX: remove call to s3c24xx_setup_clocks ARM: S3C24XX: add get_rate for clk_p on S3C2416/2443 ARM: S3C24XX: add get_rate for clk_h on S3C2416/2443 ARM: S3C24XX: remove XXX_setup_clocks method from S3C2443 ARM: S3C24XX: remove obsolete S3C2416_DMA option ARM: S3C24XX: Reuse S3C2443 dma for S3C2416 ARM: S3C24XX: Fix indentation of dma-s3c2443 ARM: S3C24XX: Move device setup files to mach directory ARM: S3C24XX: Consolidate Simtec extensions ARM: S3C24XX: move simtec-specific code to mach directory ARM: S3C24XX: Move common-smdk code to mach directory ARM: S3C24XX: Move s3c2443-clock.c to mach-s3c24xx ARM: s3c2410_defconfig: update s3c2410_defconfig ARM: S3C2443: move mach-s3c2443/* into mach-s3c24xx/ ARM: S3C2440: move mach-s3c2440/* into mach-s3c24xx/ ARM: S3C2416: move mach-s3c2416/* into mach-s3c24xx/ ARM: S3C2412: move mach-s3c2412/* into mach-s3c24xx/ ARM: S3C2410: move mach-s3c2410/* into mach-s3c24xx/ ARM: S3C24XX: change the ARCH_S3C2410 to ARCH_S3C24XX ARM: S3C2410: move s3c2410_baseclk_add to clock.h ...
Diffstat (limited to 'arch/arm/mach-s3c24xx/h1940-bluetooth.c')
-rw-r--r--arch/arm/mach-s3c24xx/h1940-bluetooth.c157
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 000000000000..a5eeb62ce1c2
--- /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");