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ARM: pxa: ezx: 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 10:49:43 +02:00 committed by Robert Jarzmik
parent bd2e2b3c35
commit c332202289
1 changed files with 7 additions and 2 deletions
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9
arch/arm/mach-pxa/ezx.c
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@ -15,6 +15,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h> #include <linux/pwm_backlight.h>
#include <linux/input.h> #include <linux/input.h>
#include <linux/gpio.h> #include <linux/gpio.h>
@ -49,11 +50,14 @@
#define GPIO19_GEN1_CAM_RST 19 #define GPIO19_GEN1_CAM_RST 19
#define GPIO28_GEN2_CAM_RST 28 #define GPIO28_GEN2_CAM_RST 28
static struct pwm_lookup ezx_pwm_lookup[] = {
PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78700,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data ezx_backlight_data = { static struct platform_pwm_backlight_data ezx_backlight_data = {
.pwm_id = 0,
.max_brightness = 1023, .max_brightness = 1023,
.dft_brightness = 1023, .dft_brightness = 1023,
.pwm_period_ns = 78770,
.enable_gpio = -1, .enable_gpio = -1,
}; };
@ -817,6 +821,7 @@ static void __init a780_init(void)
platform_device_register(&a780_camera); platform_device_register(&a780_camera);
} }
pwm_add_table(ezx_pwm_lookup, ARRAY_SIZE(ezx_pwm_lookup));
platform_add_devices(ARRAY_AND_SIZE(ezx_devices)); platform_add_devices(ARRAY_AND_SIZE(ezx_devices));
platform_add_devices(ARRAY_AND_SIZE(a780_devices)); platform_add_devices(ARRAY_AND_SIZE(a780_devices));
} }