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ARM: pxa: pcm990: 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 10:49:52 +02:00 committed by Robert Jarzmik
parent f5a3b55287
commit 542789d2f7
1 changed files with 7 additions and 2 deletions
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9
arch/arm/mach-pxa/pcm990-baseboard.c
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@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <media/mt9v022.h>
@ -148,11 +149,14 @@ static struct pxafb_mach_info pcm990_fbinfo __initdata = {
};
#endif
static struct pwm_lookup pcm990_pwm_lookup[] = {
PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data pcm990_backlight_data = {
.pwm_id = 0,
.max_brightness = 1023,
.dft_brightness = 1023,
.pwm_period_ns = 78770,
.enable_gpio = -1,
};
@ -542,6 +546,7 @@ void __init pcm990_baseboard_init(void)
#ifndef CONFIG_PCM990_DISPLAY_NONE
pxa_set_fb_info(NULL, &pcm990_fbinfo);
#endif
pwm_add_table(pcm990_pwm_lookup, ARRAY_SIZE(pcm990_pwm_lookup));
platform_device_register(&pcm990_backlight_device);
/* MMC */