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omap3: fix and improve the LED handling on IGEP v2 board

Browse source 
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@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Enric Balletbo i Serra 2010-10-08 10:22:28 -07:00 committed by Tony Lindgren
parent 61e118dd77
commit bee1539064
1 changed files with 87 additions and 69 deletions
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156
arch/arm/mach-omap2/board-igep0020.c
View file

@ -262,6 +262,77 @@ 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)
{
@ -291,14 +362,26 @@ 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,
};
@ -372,47 +455,6 @@ 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,
};
@ -442,7 +484,7 @@ 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,
@ -503,34 +545,10 @@ 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)) {