Commit 64c644a4 authored by Thierry Reding's avatar Thierry Reding Committed by Robert Jarzmik
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ARM: pxa: mioa701: 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 a6bedd11

arch/arm/mach-pxa/mioa701.c

+7 −2
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/input.h>

#include <linux/delay.h>

#include <linux/gpio_keys.h>

#include <linux/pwm.h>

#include <linux/pwm_backlight.h>

#include <linux/rtc.h>

#include <linux/leds.h>
@@ -181,12 +182,15 @@ static unsigned long mioa701_pin_config[] = { 
	MFP_CFG_OUT(GPIO116, AF0, DRIVE_HIGH),

};



static struct pwm_lookup mioa701_pwm_lookup[] = {

	PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight", NULL, 4000 * 1024,

		   PWM_POLARITY_NORMAL),

};



/* LCD Screen and Backlight */

static struct platform_pwm_backlight_data mioa701_backlight_data = {

	.pwm_id		= 0,

	.max_brightness	= 100,

	.dft_brightness	= 50,

	.pwm_period_ns	= 4000 * 1024,	/* Fl = 250kHz */

	.enable_gpio	= -1,

};
@@ -753,6 +757,7 @@ static void __init mioa701_machine_init(void) 
	pxa_set_udc_info(&mioa701_udc_info);

	pxa_set_ac97_info(&mioa701_ac97_info);

	pm_power_off = mioa701_poweroff;

	pwm_add_table(mioa701_pwm_lookup, ARRAY_SIZE(mioa701_pwm_lookup));

	platform_add_devices(devices, ARRAY_SIZE(devices));

	gsm_init();