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Commit dd39be62 authored by Thierry Reding's avatar Thierry Reding Committed by Kukjin Kim
Browse files

ARM: S3C64XX: Use PWM lookup table for mach-hmt 



Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
Reviewed-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene@kernel.org>
parent 799fbf8c

arch/arm/mach-s3c64xx/mach-hmt.c

+7 −2
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/gpio.h>

#include <linux/delay.h>

#include <linux/leds.h>

#include <linux/pwm.h>

#include <linux/pwm_backlight.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/partitions.h>
@@ -73,6 +74,11 @@ static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = { 
	},

};



static struct pwm_lookup hmt_pwm_lookup[] = {

	PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,

		   1000000000 / (100 * 256 * 20), PWM_POLARITY_NORMAL),

};



static int hmt_bl_init(struct device *dev)

{

	int ret;
@@ -110,10 +116,8 @@ static void hmt_bl_exit(struct device *dev) 
}



static struct platform_pwm_backlight_data hmt_backlight_data = {

	.pwm_id		= 1,

	.max_brightness	= 100 * 256,

	.dft_brightness	= 40 * 256,

	.pwm_period_ns	= 1000000000 / (100 * 256 * 20),

	.enable_gpio	= -1,

	.init		= hmt_bl_init,

	.notify		= hmt_bl_notify,
@@ -268,6 +272,7 @@ static void __init hmt_machine_init(void) 
	gpio_request(S3C64XX_GPF(13), "usb power");

	gpio_direction_output(S3C64XX_GPF(13), 1);



	pwm_add_table(hmt_pwm_lookup, ARRAY_SIZE(hmt_pwm_lookup));

	platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));

}