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authorAurelien Jarno <aurelien@aurel32.net>2007-09-25 09:43:07 -0400
committerRalf Baechle <ralf@linux-mips.org>2007-10-11 18:46:07 -0400
commit21c854dcbd7698bf723676a552968040e2813490 (patch)
tree42add34cd3015837be4e3099abfa9db20e8a7957
parent34cc662f8aae0ce1db5c64d55a39a5081f9e3cd8 (diff)
[MIPS] GPIO LED driver for the WGT634U machine
Add LED support to the WGT634U machine. It uses the new gpio-led driver and a platform driver for the pin definitions. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/bcm47xx/Makefile2
-rw-r--r--arch/mips/bcm47xx/wgt634u.c64
2 files changed, 65 insertions, 1 deletions
diff --git a/arch/mips/bcm47xx/Makefile b/arch/mips/bcm47xx/Makefile
index 0afe09703e3f..35294b12d638 100644
--- a/arch/mips/bcm47xx/Makefile
+++ b/arch/mips/bcm47xx/Makefile
@@ -3,4 +3,4 @@
3# under Linux. 3# under Linux.
4# 4#
5 5
6obj-y := gpio.o irq.o prom.o serial.o setup.o time.o 6obj-y := gpio.o irq.o prom.o serial.o setup.o time.o wgt634u.o
diff --git a/arch/mips/bcm47xx/wgt634u.c b/arch/mips/bcm47xx/wgt634u.c
new file mode 100644
index 000000000000..5a017eaee712
--- /dev/null
+++ b/arch/mips/bcm47xx/wgt634u.c
@@ -0,0 +1,64 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
7 */
8
9#include <linux/platform_device.h>
10#include <linux/module.h>
11#include <linux/leds.h>
12#include <linux/ssb/ssb.h>
13#include <asm/mach-bcm47xx/bcm47xx.h>
14
15/* GPIO definitions for the WGT634U */
16#define WGT634U_GPIO_LED 3
17#define WGT634U_GPIO_RESET 2
18#define WGT634U_GPIO_TP1 7
19#define WGT634U_GPIO_TP2 6
20#define WGT634U_GPIO_TP3 5
21#define WGT634U_GPIO_TP4 4
22#define WGT634U_GPIO_TP5 1
23
24static struct gpio_led wgt634u_leds[] = {
25 {
26 .name = "power",
27 .gpio = WGT634U_GPIO_LED,
28 .active_low = 1,
29 .default_trigger = "heartbeat",
30 },
31};
32
33static struct gpio_led_platform_data wgt634u_led_data = {
34 .num_leds = ARRAY_SIZE(wgt634u_leds),
35 .leds = wgt634u_leds,
36};
37
38static struct platform_device wgt634u_gpio_leds = {
39 .name = "leds-gpio",
40 .id = -1,
41 .dev = {
42 .platform_data = &wgt634u_led_data,
43 }
44};
45
46static int __init wgt634u_init(void)
47{
48 /* There is no easy way to detect that we are running on a WGT634U
49 * machine. Use the MAC address as an heuristic. Netgear Inc. has
50 * been allocated ranges 00:09:5b:xx:xx:xx and 00:0f:b5:xx:xx:xx.
51 */
52
53 u8 *et0mac = ssb_bcm47xx.sprom.r1.et0mac;
54
55 if (et0mac[0] == 0x00 &&
56 ((et0mac[1] == 0x09 && et0mac[2] == 0x5b) ||
57 (et0mac[1] == 0x0f && et0mac[2] == 0xb5)))
58 return platform_device_register(&wgt634u_gpio_leds);
59 else
60 return -ENODEV;
61}
62
63module_init(wgt634u_init);
64