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unicore32: nb0916: 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: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Thierry Reding 2015-10-05 08:05:30 +02:00
parent cdc137089a
commit b68edac921
1 changed files with 8 additions and 2 deletions
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10
arch/unicore32/kernel/puv3-nb0916.c
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@ -19,6 +19,7 @@
#include <linux/reboot.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
@ -49,11 +50,14 @@ static struct resource puv3_i2c_resources[] = {
}
};
static struct pwm_lookup nb0916_pwm_lookup[] = {
PWM_LOOKUP("PKUnity-v3-PWM", 0, "pwm-backlight", NULL, 70 * 1024,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data nb0916_backlight_data = {
.pwm_id = 0,
.max_brightness = 100,
.dft_brightness = 100,
.pwm_period_ns = 70 * 1024,
.enable_gpio = -1,
};
@ -112,6 +116,8 @@ int __init mach_nb0916_init(void)
platform_device_register_simple("PKUnity-v3-I2C", -1,
puv3_i2c_resources, ARRAY_SIZE(puv3_i2c_resources));
pwm_add_table(nb0916_pwm_lookup, ARRAY_SIZE(nb0916_pwm_lookup));
platform_device_register_data(NULL, "pwm-backlight", -1,
&nb0916_backlight_data, sizeof(nb0916_backlight_data));