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authorShawn Guo <shawn.guo@linaro.org>2011-05-31 05:07:03 -0400
committerSascha Hauer <s.hauer@pengutronix.de>2011-07-07 04:01:07 -0400
commit53b8ff9d3781fe6ff74494ecaea735b322d9ef8e (patch)
treef1d411ffd2e4259f04eaedaf67e3d98787fd7e16 /arch/arm/mach-mxs
parent95b7445946ca68222ad84cad3703a1efe1110869 (diff)
ARM: mxs/mx28evk: add leds-gpio device for heartbeat
It adds LED2 on mx28evk board as heartbeat trigger for diagnostic purpose. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r--arch/arm/mach-mxs/Kconfig1
-rw-r--r--arch/arm/mach-mxs/mach-mx28evk.c21
2 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 162b0b0bc356..1d3985f37858 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -41,6 +41,7 @@ config MACH_MX23EVK
41config MACH_MX28EVK 41config MACH_MX28EVK
42 bool "Support MX28EVK Platform" 42 bool "Support MX28EVK Platform"
43 select SOC_IMX28 43 select SOC_IMX28
44 select LEDS_GPIO_REGISTER
44 select MXS_HAVE_AMBA_DUART 45 select MXS_HAVE_AMBA_DUART
45 select MXS_HAVE_PLATFORM_AUART 46 select MXS_HAVE_PLATFORM_AUART
46 select MXS_HAVE_PLATFORM_FEC 47 select MXS_HAVE_PLATFORM_FEC
diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
index 56767a5cce0e..eaaf6ff28990 100644
--- a/arch/arm/mach-mxs/mach-mx28evk.c
+++ b/arch/arm/mach-mxs/mach-mx28evk.c
@@ -15,6 +15,7 @@
15#include <linux/delay.h> 15#include <linux/delay.h>
16#include <linux/platform_device.h> 16#include <linux/platform_device.h>
17#include <linux/gpio.h> 17#include <linux/gpio.h>
18#include <linux/leds.h>
18#include <linux/irq.h> 19#include <linux/irq.h>
19#include <linux/clk.h> 20#include <linux/clk.h>
20 21
@@ -29,6 +30,7 @@
29 30
30#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13) 31#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
31#define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15) 32#define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15)
33#define MX28EVK_GPIO_LED MXS_GPIO_NR(3, 5)
32#define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18) 34#define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18)
33#define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30) 35#define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30)
34#define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13) 36#define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
@@ -178,6 +180,23 @@ static const iomux_cfg_t mx28evk_pads[] __initconst = {
178 /* slot power enable */ 180 /* slot power enable */
179 MX28_PAD_PWM4__GPIO_3_29 | 181 MX28_PAD_PWM4__GPIO_3_29 |
180 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL), 182 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
183
184 /* led */
185 MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL,
186};
187
188/* led */
189static const struct gpio_led mx28evk_leds[] __initconst = {
190 {
191 .name = "GPIO-LED",
192 .default_trigger = "heartbeat",
193 .gpio = MX28EVK_GPIO_LED,
194 },
195};
196
197static const struct gpio_led_platform_data mx28evk_led_data __initconst = {
198 .leds = mx28evk_leds,
199 .num_leds = ARRAY_SIZE(mx28evk_leds),
181}; 200};
182 201
183/* fec */ 202/* fec */
@@ -385,6 +404,8 @@ static void __init mx28evk_init(void)
385 if (ret) 404 if (ret)
386 pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret); 405 pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
387 mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]); 406 mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
407
408 gpio_led_register_device(0, &mx28evk_led_data);
388} 409}
389 410
390static void __init mx28evk_timer_init(void) 411static void __init mx28evk_timer_init(void)