2 * arch/arm/mach-s3c2410/h1940-bluetooth.c
3 * Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org>
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file COPYING in the main directory of this archive for
9 * S3C2410 bluetooth "driver"
13 #include <linux/module.h>
14 #include <linux/platform_device.h>
15 #include <linux/delay.h>
16 #include <linux/string.h>
17 #include <linux/ctype.h>
18 #include <linux/leds.h>
19 #include <linux/gpio.h>
20 #include <linux/rfkill.h>
22 #include <mach/regs-gpio.h>
23 #include <mach/hardware.h>
24 #include <mach/h1940-latch.h>
26 #define DRV_NAME "h1940-bt"
28 /* Bluetooth control */
29 static void h1940bt_enable(int on)
32 /* Power on the chip */
33 gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 1);
37 gpio_set_value(S3C2410_GPH(1), 1);
39 gpio_set_value(S3C2410_GPH(1), 0);
42 gpio_set_value(S3C2410_GPH(1), 1);
44 gpio_set_value(S3C2410_GPH(1), 0);
46 gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 0);
50 static int h1940bt_set_block(void *data, bool blocked)
52 h1940bt_enable(!blocked);
56 static const struct rfkill_ops h1940bt_rfkill_ops = {
57 .set_block = h1940bt_set_block,
60 static int __devinit h1940bt_probe(struct platform_device *pdev)
65 ret = gpio_request(S3C2410_GPH(1), dev_name(&pdev->dev));
67 dev_err(&pdev->dev, "could not get GPH1\n");
71 ret = gpio_request(H1940_LATCH_BLUETOOTH_POWER, dev_name(&pdev->dev));
73 gpio_free(S3C2410_GPH(1));
74 dev_err(&pdev->dev, "could not get BT_POWER\n");
78 /* Configures BT serial port GPIOs */
79 s3c_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
80 s3c_gpio_setpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
81 s3c_gpio_cfgpin(S3C2410_GPH(1), S3C2410_GPIO_OUTPUT);
82 s3c_gpio_setpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
83 s3c_gpio_cfgpin(S3C2410_GPH(2), S3C2410_GPH2_TXD0);
84 s3c_gpio_setpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
85 s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
86 s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
89 rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
90 &h1940bt_rfkill_ops, NULL);
96 rfkill_set_led_trigger_name(rfk, "h1940-bluetooth");
98 ret = rfkill_register(rfk);
102 platform_set_drvdata(pdev, rfk);
112 static int h1940bt_remove(struct platform_device *pdev)
114 struct rfkill *rfk = platform_get_drvdata(pdev);
116 platform_set_drvdata(pdev, NULL);
117 gpio_free(S3C2410_GPH(1));
120 rfkill_unregister(rfk);
131 static struct platform_driver h1940bt_driver = {
135 .probe = h1940bt_probe,
136 .remove = h1940bt_remove,
140 static int __init h1940bt_init(void)
142 return platform_driver_register(&h1940bt_driver);
145 static void __exit h1940bt_exit(void)
147 platform_driver_unregister(&h1940bt_driver);
150 module_init(h1940bt_init);
151 module_exit(h1940bt_exit);
153 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
154 MODULE_DESCRIPTION("Driver for the iPAQ H1940 bluetooth chip");
155 MODULE_LICENSE("GPL");