diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-pxa/palmtx.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/palmtx.c b/arch/arm/mach-pxa/palmtx.c index 0ca2f17402b..408657a24f8 100644 --- a/arch/arm/mach-pxa/palmtx.c +++ b/arch/arm/mach-pxa/palmtx.c @@ -22,6 +22,7 @@ #include <linux/irq.h> #include <linux/gpio_keys.h> #include <linux/input.h> +#include <linux/pda_power.h> #include <linux/pwm_backlight.h> #include <linux/gpio.h> @@ -279,6 +280,66 @@ static struct pxa2xx_udc_mach_info palmtx_udc_info __initdata = { }; /****************************************************************************** + * Power supply + ******************************************************************************/ +static int power_supply_init(struct device *dev) +{ + int ret; + + ret = gpio_request(GPIO_NR_PALMTX_POWER_DETECT, "CABLE_STATE_AC"); + if (ret) + goto err_cs_ac; + + ret = gpio_request(GPIO_NR_PALMTX_USB_DETECT_N, "CABLE_STATE_USB"); + if (ret) + goto err_cs_usb; + + return 0; + +err_cs_usb: + gpio_free(GPIO_NR_PALMTX_POWER_DETECT); +err_cs_ac: + return ret; +} + +static int palmtx_is_ac_online(void) +{ + return gpio_get_value(GPIO_NR_PALMTX_POWER_DETECT); +} + +static int palmtx_is_usb_online(void) +{ + return !gpio_get_value(GPIO_NR_PALMTX_USB_DETECT_N); +} + +static void power_supply_exit(struct device *dev) +{ + gpio_free(GPIO_NR_PALMTX_USB_DETECT_N); + gpio_free(GPIO_NR_PALMTX_POWER_DETECT); +} + +static char *palmtx_supplicants[] = { + "main-battery", +}; + +static struct pda_power_pdata power_supply_info = { + .init = power_supply_init, + .is_ac_online = palmtx_is_ac_online, + .is_usb_online = palmtx_is_usb_online, + .exit = power_supply_exit, + .supplied_to = palmtx_supplicants, + .num_supplicants = ARRAY_SIZE(palmtx_supplicants), +}; + +static struct platform_device power_supply = { + .name = "pda-power", + .id = -1, + .dev = { + .platform_data = &power_supply_info, + }, +}; + +/****************************************************************************** * Framebuffer ******************************************************************************/ static struct pxafb_mode_info palmtx_lcd_modes[] = { @@ -312,6 +373,7 @@ static struct platform_device *devices[] __initdata = { &palmtx_pxa_keys, #endif &palmtx_backlight, + &power_supply, }; static struct map_desc palmtx_io_desc[] __initdata = { |