Commit 18999cba authored by Thierry Reding's avatar Thierry Reding Committed by Robert Jarzmik
Browse files

ARM: pxa: viper: Use PWM lookup table 



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.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
parent 390f8298

arch/arm/mach-pxa/viper.c

+7 −2
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <linux/i2c/pxa-i2c.h>

#include <linux/serial_8250.h>

#include <linux/smc91x.h>

#include <linux/pwm.h>

#include <linux/pwm_backlight.h>

#include <linux/usb/isp116x.h>

#include <linux/mtd/mtd.h>
@@ -350,6 +351,11 @@ static struct pxafb_mach_info fb_info = { 
	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,

};



static struct pwm_lookup viper_pwm_lookup[] = {

	PWM_LOOKUP("pxa25x-pwm.0", 0, "pwm-backlight.0", NULL, 1000000,

		   PWM_POLARITY_NORMAL),

};



static int viper_backlight_init(struct device *dev)

{

	int ret;
@@ -398,10 +404,8 @@ static void viper_backlight_exit(struct device *dev) 
}



static struct platform_pwm_backlight_data viper_backlight_data = {

	.pwm_id		= 0,

	.max_brightness	= 100,

	.dft_brightness	= 100,

	.pwm_period_ns	= 1000000,

	.enable_gpio	= -1,

	.init		= viper_backlight_init,

	.notify		= viper_backlight_notify,
@@ -939,6 +943,7 @@ static void __init viper_init(void) 
		smc91x_device.num_resources--;



	pxa_set_i2c_info(NULL);

	pwm_add_table(viper_pwm_lookup, ARRAY_SIZE(viper_pwm_lookup));

	platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs));



	viper_init_vcore_gpios();