p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ARM: pxa: viper: 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: 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 10:49:55 +02:00 committed by Robert Jarzmik
parent 390f829878
commit 18999cba54
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/arm/mach-pxa/viper.c
View File

@ -39,6 +39,7 @@
#include <linux/i2c/pxa-i2c.h>
#include <linux/serial_8250.h>
#include <linux/smc91x.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/usb/isp116x.h>
#include <linux/mtd/mtd.h>
@ -350,6 +351,11 @@ static struct pxafb_mach_info fb_info = {
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static struct pwm_lookup viper_pwm_lookup[] = {
PWM_LOOKUP("pxa25x-pwm.0", 0, "pwm-backlight.0", NULL, 1000000,
PWM_POLARITY_NORMAL),
};
static int viper_backlight_init(struct device *dev)
{
int ret;
@ -398,10 +404,8 @@ static void viper_backlight_exit(struct device *dev)
}
static struct platform_pwm_backlight_data viper_backlight_data = {
.pwm_id = 0,
.max_brightness = 100,
.dft_brightness = 100,
.pwm_period_ns = 1000000,
.enable_gpio = -1,
.init = viper_backlight_init,
.notify = viper_backlight_notify,
@ -939,6 +943,7 @@ static void __init viper_init(void)
smc91x_device.num_resources--;
pxa_set_i2c_info(NULL);
pwm_add_table(viper_pwm_lookup, ARRAY_SIZE(viper_pwm_lookup));
platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs));
viper_init_vcore_gpios();