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ARM: mach-pxa: retire custom LED code

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Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
This commit is contained in:
Bryan Wu
2012-03-14 02:07:58 +08:00
parent 51891a4313
commit 55f5d8ec5a
9 changed files with 270 additions and 411 deletions
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94
arch/arm/mach-pxa/mainstone.c
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@@ -28,6 +28,8 @@
#include <linux/pwm_backlight.h>
#include <linux/smc91x.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include <asm/types.h>
#include <asm/setup.h>
@@ -613,6 +615,98 @@ static void __init mainstone_map_io(void)
PCFR = 0x66;
}
/*
* Driver for the 8 discrete LEDs available for general use:
* Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
* so be sure to not monkey with them here.
*/
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct mainstone_led {
struct led_classdev cdev;
u8 mask;
};
/*
* The triggers lines up below will only be used if the
* LED triggers are compiled in.
*/
static const struct {
const char *name;
const char *trigger;
} mainstone_leds[] = {
{ "mainstone:D28", "default-on", },
{ "mainstone:D27", "cpu0", },
{ "mainstone:D26", "heartbeat" },
{ "mainstone:D25", },
{ "mainstone:D24", },
{ "mainstone:D23", },
{ "mainstone:D22", },
{ "mainstone:D21", },
};
static void mainstone_led_set(struct led_classdev *cdev,
enum led_brightness b)
{
struct mainstone_led *led = container_of(cdev,
struct mainstone_led, cdev);
u32 reg = MST_LEDCTRL;
if (b != LED_OFF)
reg |= led->mask;
else
reg &= ~led->mask;
MST_LEDCTRL = reg;
}
static enum led_brightness mainstone_led_get(struct led_classdev *cdev)
{
struct mainstone_led *led = container_of(cdev,
struct mainstone_led, cdev);
u32 reg = MST_LEDCTRL;
return (reg & led->mask) ? LED_FULL : LED_OFF;
}
static int __init mainstone_leds_init(void)
{
int i;
if (!machine_is_mainstone())
return -ENODEV;
/* All ON */
MST_LEDCTRL |= 0xff;
for (i = 0; i < ARRAY_SIZE(mainstone_leds); i++) {
struct mainstone_led *led;
led = kzalloc(sizeof(*led), GFP_KERNEL);
if (!led)
break;
led->cdev.name = mainstone_leds[i].name;
led->cdev.brightness_set = mainstone_led_set;
led->cdev.brightness_get = mainstone_led_get;
led->cdev.default_trigger = mainstone_leds[i].trigger;
led->mask = BIT(i);
if (led_classdev_register(NULL, &led->cdev) < 0) {
kfree(led);
break;
}
}
return 0;
}
/*
* Since we may have triggers on any subsystem, defer registration
* until after subsystem_init.
*/
fs_initcall(mainstone_leds_init);
#endif
MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
/* Maintainer: MontaVista Software Inc. */
.atag_offset = 0x100, /* BLOB boot parameter setting */