diff options
author | Arnaud Patard <arnaud.patard@rtp-net.org> | 2007-05-09 16:41:03 -0400 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-05-11 12:19:37 -0400 |
commit | 7fdc7849d2f9f926cbaec224bbcbacb164b07b23 (patch) | |
tree | b7fea8c279e225517324f3714c24999916a0dfe7 /arch | |
parent | b8b6970b4fe08397554295b0c5169bec7575f7c9 (diff) |
[ARM] 4359/3: H1940: Add bluetooth support
This patch adds a small driver responsible for configuring the UART used
for the bluetooth chip and for enabling the bluetooth chipset.
Additionnaly, can trigger a led if the H1940 led driver is enabled.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-s3c2410/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/h1940-bluetooth.c | 142 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/mach-h1940.c | 6 |
3 files changed, 149 insertions, 1 deletions
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile index 9a3d3d24c08..3e7a85594d9 100644 --- a/arch/arm/mach-s3c2410/Makefile +++ b/arch/arm/mach-s3c2410/Makefile | |||
@@ -20,7 +20,7 @@ obj-$(CONFIG_S3C2410_CLOCK) += clock.o | |||
20 | # Machine support | 20 | # Machine support |
21 | 21 | ||
22 | obj-$(CONFIG_ARCH_SMDK2410) += mach-smdk2410.o | 22 | obj-$(CONFIG_ARCH_SMDK2410) += mach-smdk2410.o |
23 | obj-$(CONFIG_ARCH_H1940) += mach-h1940.o | 23 | obj-$(CONFIG_ARCH_H1940) += mach-h1940.o h1940-bluetooth.o |
24 | obj-$(CONFIG_PM_H1940) += pm-h1940.o | 24 | obj-$(CONFIG_PM_H1940) += pm-h1940.o |
25 | obj-$(CONFIG_MACH_N30) += mach-n30.o | 25 | obj-$(CONFIG_MACH_N30) += mach-n30.o |
26 | obj-$(CONFIG_ARCH_BAST) += mach-bast.o usb-simtec.o | 26 | obj-$(CONFIG_ARCH_BAST) += mach-bast.o usb-simtec.o |
diff --git a/arch/arm/mach-s3c2410/h1940-bluetooth.c b/arch/arm/mach-s3c2410/h1940-bluetooth.c new file mode 100644 index 00000000000..3c48886521e --- /dev/null +++ b/arch/arm/mach-s3c2410/h1940-bluetooth.c | |||
@@ -0,0 +1,142 @@ | |||
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> | ||
19 | #include <asm/arch/regs-gpio.h> | ||
20 | #include <asm/hardware.h> | ||
21 | #include <asm/arch/h1940-latch.h> | ||
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"); | ||
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c index 5d5f00e9c46..5ccd0be23a3 100644 --- a/arch/arm/mach-s3c2410/mach-h1940.c +++ b/arch/arm/mach-s3c2410/mach-h1940.c | |||
@@ -177,6 +177,11 @@ static struct platform_device s3c_device_leds = { | |||
177 | .id = -1, | 177 | .id = -1, |
178 | }; | 178 | }; |
179 | 179 | ||
180 | static struct platform_device s3c_device_bluetooth = { | ||
181 | .name = "h1940-bt", | ||
182 | .id = -1, | ||
183 | }; | ||
184 | |||
180 | static struct platform_device *h1940_devices[] __initdata = { | 185 | static struct platform_device *h1940_devices[] __initdata = { |
181 | &s3c_device_usb, | 186 | &s3c_device_usb, |
182 | &s3c_device_lcd, | 187 | &s3c_device_lcd, |
@@ -185,6 +190,7 @@ static struct platform_device *h1940_devices[] __initdata = { | |||
185 | &s3c_device_iis, | 190 | &s3c_device_iis, |
186 | &s3c_device_usbgadget, | 191 | &s3c_device_usbgadget, |
187 | &s3c_device_leds, | 192 | &s3c_device_leds, |
193 | &s3c_device_bluetooth, | ||
188 | }; | 194 | }; |
189 | 195 | ||
190 | static void __init h1940_map_io(void) | 196 | static void __init h1940_map_io(void) |