Commit | Line | Data |
---|---|---|
7fdc7849 AP |
1 | /* |
2 | * arch/arm/mach-s3c2410/h1940-bluetooth.c | |
3 | * Copyright (c) Arnaud Patard <arnaud.patard@rtp-net.org> | |
4 | * | |
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 | |
7 | * more details. | |
8 | * | |
9 | * S3C2410 bluetooth "driver" | |
10 | * | |
11 | */ | |
12 | ||
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> | |
a09e64fb RK |
19 | #include <mach/regs-gpio.h> |
20 | #include <mach/hardware.h> | |
21 | #include <mach/h1940-latch.h> | |
7fdc7849 AP |
22 | |
23 | #define DRV_NAME "h1940-bt" | |
24 | ||
25 | #ifdef CONFIG_LEDS_H1940 | |
26 | DEFINE_LED_TRIGGER(bt_led_trigger); | |
27 | #endif | |
28 | ||
29 | static int state; | |
30 | ||
31 | /* Bluetooth control */ | |
32 | static void h1940bt_enable(int on) | |
33 | { | |
34 | if (on) { | |
35 | #ifdef CONFIG_LEDS_H1940 | |
36 | /* flashing Blue */ | |
37 | led_trigger_event(bt_led_trigger, LED_HALF); | |
38 | #endif | |
39 | ||
40 | /* Power on the chip */ | |
41 | h1940_latch_control(0, H1940_LATCH_BLUETOOTH_POWER); | |
42 | /* Reset the chip */ | |
43 | mdelay(10); | |
44 | s3c2410_gpio_setpin(S3C2410_GPH1, 1); | |
45 | mdelay(10); | |
46 | s3c2410_gpio_setpin(S3C2410_GPH1, 0); | |
47 | ||
48 | state = 1; | |
49 | } | |
50 | else { | |
51 | #ifdef CONFIG_LEDS_H1940 | |
52 | led_trigger_event(bt_led_trigger, 0); | |
53 | #endif | |
54 | ||
55 | s3c2410_gpio_setpin(S3C2410_GPH1, 1); | |
56 | mdelay(10); | |
57 | s3c2410_gpio_setpin(S3C2410_GPH1, 0); | |
58 | mdelay(10); | |
59 | h1940_latch_control(H1940_LATCH_BLUETOOTH_POWER, 0); | |
60 | ||
61 | state = 0; | |
62 | } | |
63 | } | |
64 | ||
65 | static ssize_t h1940bt_show(struct device *dev, struct device_attribute *attr, char *buf) | |
66 | { | |
67 | return snprintf(buf, PAGE_SIZE, "%d\n", state); | |
68 | } | |
69 | ||
70 | static ssize_t h1940bt_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
71 | { | |
72 | int new_state; | |
73 | char *endp; | |
74 | ||
75 | new_state = simple_strtoul(buf, &endp, 0); | |
76 | if (*endp && !isspace(*endp)) | |
77 | return -EINVAL; | |
78 | ||
79 | h1940bt_enable(new_state); | |
80 | ||
81 | return count; | |
82 | } | |
83 | static DEVICE_ATTR(enable, 0644, | |
84 | h1940bt_show, | |
85 | h1940bt_store); | |
86 | ||
87 | static int __init h1940bt_probe(struct platform_device *pdev) | |
88 | { | |
89 | /* Configures BT serial port GPIOs */ | |
90 | s3c2410_gpio_cfgpin(S3C2410_GPH0, S3C2410_GPH0_nCTS0); | |
91 | s3c2410_gpio_pullup(S3C2410_GPH0, 1); | |
92 | s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP); | |
93 | s3c2410_gpio_pullup(S3C2410_GPH1, 1); | |
94 | s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPH2_TXD0); | |
95 | s3c2410_gpio_pullup(S3C2410_GPH2, 1); | |
96 | s3c2410_gpio_cfgpin(S3C2410_GPH3, S3C2410_GPH3_RXD0); | |
97 | s3c2410_gpio_pullup(S3C2410_GPH3, 1); | |
98 | ||
99 | #ifdef CONFIG_LEDS_H1940 | |
100 | led_trigger_register_simple("h1940-bluetooth", &bt_led_trigger); | |
101 | #endif | |
102 | ||
103 | /* disable BT by default */ | |
104 | h1940bt_enable(0); | |
105 | ||
106 | return device_create_file(&pdev->dev, &dev_attr_enable); | |
107 | } | |
108 | ||
109 | static int h1940bt_remove(struct platform_device *pdev) | |
110 | { | |
111 | #ifdef CONFIG_LEDS_H1940 | |
112 | led_trigger_unregister_simple(bt_led_trigger); | |
113 | #endif | |
114 | return 0; | |
115 | } | |
116 | ||
117 | ||
118 | static struct platform_driver h1940bt_driver = { | |
119 | .driver = { | |
120 | .name = DRV_NAME, | |
121 | }, | |
122 | .probe = h1940bt_probe, | |
123 | .remove = h1940bt_remove, | |
124 | }; | |
125 | ||
126 | ||
127 | static int __init h1940bt_init(void) | |
128 | { | |
129 | return platform_driver_register(&h1940bt_driver); | |
130 | } | |
131 | ||
132 | static void __exit h1940bt_exit(void) | |
133 | { | |
134 | platform_driver_unregister(&h1940bt_driver); | |
135 | } | |
136 | ||
137 | module_init(h1940bt_init); | |
138 | module_exit(h1940bt_exit); | |
139 | ||
140 | MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>"); | |
141 | MODULE_DESCRIPTION("Driver for the iPAQ H1940 bluetooth chip"); | |
142 | MODULE_LICENSE("GPL"); |