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ARM: pxa: mioa701: Use PWM lookup table

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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: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
This commit is contained in:
Thierry Reding 2015-10-05 10:49:48 +02:00 committed by Robert Jarzmik
parent a6bedd11da
commit 64c644a40d
1 changed files with 7 additions and 2 deletions
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9
arch/arm/mach-pxa/mioa701.c
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@ -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();