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ARM: clps711x: p720t: Using "leds-gpio" driver for LED control

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Instead of manually create LED class device, we will use "leds-gpio"
driver for LED control.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Alexander Shiyan 2012-11-17 17:57:08 +04:00 committed by Olof Johansson
parent 200daa367c
commit b3a076dd02
2 changed files with 25 additions and 56 deletions
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3
arch/arm/mach-clps711x/common.h
View File

@ -4,6 +4,9 @@
* Common bits.
*/
#define CLPS711X_NR_GPIO (4 * 8 + 3)
#define CLPS711X_GPIO(prt, bit) ((prt) * 8 + (bit))
struct sys_timer;
extern void clps711x_map_io(void);

78
arch/arm/mach-clps711x/p720t.c
View File

@ -25,6 +25,7 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <mach/hardware.h>
#include <asm/pgtable.h>
@ -38,6 +39,8 @@
#include "common.h"
#define GPIO_USERLED CLPS711X_GPIO(3, 0)
/*
* Map the P720T system PLD. It occupies two address spaces:
* 0x10000000 and 0x10400000. We map both regions as one.
@ -103,71 +106,34 @@ static void __init p720t_init_early(void)
}
}
/*
* LED controled by CPLD
*/
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
static void p720t_led_set(struct led_classdev *cdev,
enum led_brightness b)
static struct gpio_led p720t_gpio_leds[] = {
{
.name = "User LED",
.default_trigger = "heartbeat",
.gpio = GPIO_USERLED,
},
};
static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
.leds = p720t_gpio_leds,
.num_leds = ARRAY_SIZE(p720t_gpio_leds),
};
static void __init p720t_init_late(void)
{
u8 reg = clps_readb(PDDR);
if (b != LED_OFF)
reg |= 0x1;
else
reg &= ~0x1;
clps_writeb(reg, PDDR);
platform_device_register_data(&platform_bus, "leds-gpio", 0,
&p720t_gpio_led_pdata,
sizeof(p720t_gpio_led_pdata));
}
static enum led_brightness p720t_led_get(struct led_classdev *cdev)
{
u8 reg = clps_readb(PDDR);
return (reg & 0x1) ? LED_FULL : LED_OFF;
}
static int __init p720t_leds_init(void)
{
struct led_classdev *cdev;
int ret;
if (!machine_is_p720t())
return -ENODEV;
cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
if (!cdev)
return -ENOMEM;
cdev->name = "p720t:0";
cdev->brightness_set = p720t_led_set;
cdev->brightness_get = p720t_led_get;
cdev->default_trigger = "heartbeat";
ret = led_classdev_register(NULL, cdev);
if (ret < 0) {
kfree(cdev);
return ret;
}
return 0;
}
/*
* Since we may have triggers on any subsystem, defer registration
* until after subsystem_init.
*/
fs_initcall(p720t_leds_init);
#endif
MACHINE_START(P720T, "ARM-Prospector720T")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
.fixup = fixup_p720t,
.init_early = p720t_init_early,
.map_io = p720t_map_io,
.init_early = p720t_init_early,
.init_irq = clps711x_init_irq,
.timer = &clps711x_timer,
.init_late = p720t_init_late,
.restart = clps711x_restart,
MACHINE_END