[PATCHv4 2/6] omap3: fix and improve the LED handling on IGEP v2 board.
Enric Balletbo i Serra
eballetbo at gmail.com
Tue Oct 5 10:15:18 EDT 2010
The IGEP v2 board has four leds, this patch allows control all
of these LEDs using the LED class if CONFIG_LEDS_GPIO is selected
or using the General Purpose Input/Output (GPIO) interface if
CONFIG_LEDS_GPIO is not selected.
Signed-off-by: Enric Balletbo i Serra <eballetbo at gmail.com>
---
arch/arm/mach-omap2/board-igep0020.c | 156 +++++++++++++++++++---------------
1 files changed, 87 insertions(+), 69 deletions(-)
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 07dbdb7..83a30ce 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -261,6 +261,77 @@ static struct omap2_hsmmc_info mmc[] = {
{} /* Terminator */
};
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+#include <linux/leds.h>
+
+static struct gpio_led igep2_gpio_leds[] = {
+ [0] = {
+ .name = "gpio-led:red:d0",
+ .gpio = IGEP2_GPIO_LED0_RED,
+ .default_trigger = "default-off"
+ },
+ [1] = {
+ .name = "gpio-led:green:d0",
+ .gpio = IGEP2_GPIO_LED0_GREEN,
+ .default_trigger = "default-off",
+ },
+ [2] = {
+ .name = "gpio-led:red:d1",
+ .gpio = IGEP2_GPIO_LED1_RED,
+ .default_trigger = "default-off",
+ },
+ [3] = {
+ .name = "gpio-led:green:d1",
+ .default_trigger = "heartbeat",
+ .gpio = -EINVAL, /* gets replaced */
+ },
+};
+
+static struct gpio_led_platform_data igep2_led_pdata = {
+ .leds = igep2_gpio_leds,
+ .num_leds = ARRAY_SIZE(igep2_gpio_leds),
+};
+
+static struct platform_device igep2_led_device = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev = {
+ .platform_data = &igep2_led_pdata,
+ },
+};
+
+static void __init igep2_leds_init(void)
+{
+ platform_device_register(&igep2_led_device);
+}
+
+#else
+static inline void igep2_leds_init(void)
+{
+ if ((gpio_request(IGEP2_GPIO_LED0_RED, "gpio-led:red:d0") == 0) &&
+ (gpio_direction_output(IGEP2_GPIO_LED0_RED, 1) == 0)) {
+ gpio_export(IGEP2_GPIO_LED0_RED, 0);
+ gpio_set_value(IGEP2_GPIO_LED0_RED, 0);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_LED0_RED\n");
+
+ if ((gpio_request(IGEP2_GPIO_LED0_GREEN, "gpio-led:green:d0") == 0) &&
+ (gpio_direction_output(IGEP2_GPIO_LED0_GREEN, 1) == 0)) {
+ gpio_export(IGEP2_GPIO_LED0_GREEN, 0);
+ gpio_set_value(IGEP2_GPIO_LED0_GREEN, 0);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_LED0_GREEN\n");
+
+ if ((gpio_request(IGEP2_GPIO_LED1_RED, "gpio-led:red:d1") == 0) &&
+ (gpio_direction_output(IGEP2_GPIO_LED1_RED, 1) == 0)) {
+ gpio_export(IGEP2_GPIO_LED1_RED, 0);
+ gpio_set_value(IGEP2_GPIO_LED1_RED, 0);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_LED1_RED\n");
+
+}
+#endif
+
static int igep2_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
@@ -290,14 +361,26 @@ static int igep2_twl_gpio_setup(struct device *dev,
(gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0) < 0))
pr_err("IGEP2: Could not obtain gpio for USBH_CPEN");
+ /* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
+#if !defined(CONFIG_LEDS_GPIO) && !defined(CONFIG_LEDS_GPIO_MODULE)
+ if ((gpio_request(gpio+TWL4030_GPIO_MAX+1, "gpio-led:green:d1") == 0)
+ && (gpio_direction_output(gpio + TWL4030_GPIO_MAX + 1, 1) == 0)) {
+ gpio_export(gpio + TWL4030_GPIO_MAX + 1, 0);
+ gpio_set_value(gpio + TWL4030_GPIO_MAX + 1, 0);
+ } else
+ pr_warning("IGEP v2: Could not obtain gpio GPIO_LED1_GREEN\n");
+#else
+ igep2_gpio_leds[3].gpio = gpio + TWL4030_GPIO_MAX + 1;
+#endif
+
return 0;
};
-static struct twl4030_gpio_platform_data igep2_gpio_data = {
+static struct twl4030_gpio_platform_data igep2_twl4030_gpio_pdata = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
- .use_leds = false,
+ .use_leds = true,
.setup = igep2_twl_gpio_setup,
};
@@ -371,47 +454,6 @@ static void __init igep2_display_init(void)
pr_err("IGEP v2: Could not obtain gpio GPIO_DVI_PUP\n");
}
-#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
-#include <linux/leds.h>
-
-static struct gpio_led igep2_gpio_leds[] = {
- {
- .name = "led0:red",
- .gpio = IGEP2_GPIO_LED0_RED,
- },
- {
- .name = "led0:green",
- .default_trigger = "heartbeat",
- .gpio = IGEP2_GPIO_LED0_GREEN,
- },
- {
- .name = "led1:red",
- .gpio = IGEP2_GPIO_LED1_RED,
- },
-};
-
-static struct gpio_led_platform_data igep2_led_pdata = {
- .leds = igep2_gpio_leds,
- .num_leds = ARRAY_SIZE(igep2_gpio_leds),
-};
-
-static struct platform_device igep2_led_device = {
- .name = "leds-gpio",
- .id = -1,
- .dev = {
- .platform_data = &igep2_led_pdata,
- },
-};
-
-static void __init igep2_init_led(void)
-{
- platform_device_register(&igep2_led_device);
-}
-
-#else
-static inline void igep2_init_led(void) {}
-#endif
-
static struct platform_device *igep2_devices[] __initdata = {
&igep2_dss_device,
};
@@ -441,7 +483,7 @@ static struct twl4030_platform_data igep2_twldata = {
/* platform_data for children goes here */
.usb = &igep2_usb_data,
.codec = &igep2_codec_data,
- .gpio = &igep2_gpio_data,
+ .gpio = &igep2_twl4030_gpio_pdata,
.vmmc1 = &igep2_vmmc1,
.vmmc2 = &igep2_vmmc2,
.vpll2 = &igep2_vpll2,
@@ -502,34 +544,10 @@ static void __init igep2_init(void)
usb_ehci_init(&ehci_pdata);
igep2_flash_init();
- igep2_init_led();
+ igep2_leds_init();
igep2_display_init();
igep2_init_smsc911x();
- /* GPIO userspace leds */
-#if !defined(CONFIG_LEDS_GPIO) && !defined(CONFIG_LEDS_GPIO_MODULE)
- if ((gpio_request(IGEP2_GPIO_LED0_RED, "led0:red") == 0) &&
- (gpio_direction_output(IGEP2_GPIO_LED0_RED, 1) == 0)) {
- gpio_export(IGEP2_GPIO_LED0_RED, 0);
- gpio_set_value(IGEP2_GPIO_LED0_RED, 0);
- } else
- pr_warning("IGEP v2: Could not obtain gpio GPIO_LED0_RED\n");
-
- if ((gpio_request(IGEP2_GPIO_LED0_GREEN, "led0:green") == 0) &&
- (gpio_direction_output(IGEP2_GPIO_LED0_GREEN, 1) == 0)) {
- gpio_export(IGEP2_GPIO_LED0_GREEN, 0);
- gpio_set_value(IGEP2_GPIO_LED0_GREEN, 0);
- } else
- pr_warning("IGEP v2: Could not obtain gpio GPIO_LED0_GREEN\n");
-
- if ((gpio_request(IGEP2_GPIO_LED1_RED, "led1:red") == 0) &&
- (gpio_direction_output(IGEP2_GPIO_LED1_RED, 1) == 0)) {
- gpio_export(IGEP2_GPIO_LED1_RED, 0);
- gpio_set_value(IGEP2_GPIO_LED1_RED, 0);
- } else
- pr_warning("IGEP v2: Could not obtain gpio GPIO_LED1_RED\n");
-#endif
-
/* GPIO W-LAN + Bluetooth combo module */
if ((gpio_request(IGEP2_GPIO_WIFI_NPD, "GPIO_WIFI_NPD") == 0) &&
(gpio_direction_output(IGEP2_GPIO_WIFI_NPD, 1) == 0)) {
--
1.7.0.4
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