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authorThierry Reding <thierry.reding@gmail.com>2015-10-05 10:49:55 +0200
committerRobert Jarzmik <robert.jarzmik@free.fr>2015-10-14 23:06:49 +0200
commit18999cba54f7f117ae7b2da01b4ad52f42d4e18c (patch)
tree959f72c5a49563c0f850d49157629c00ddacd74f /arch/arm/mach-pxa
parent390f829878b2dafccfaa77d2ea8d95a62238d5e0 (diff)
downloadlinux-18999cba54f7f117ae7b2da01b4ad52f42d4e18c.tar.bz2
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>
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/viper.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c
index 4841d6cefe76..b09e8cadd41f 100644
--- a/arch/arm/mach-pxa/viper.c
+++ b/arch/arm/mach-pxa/viper.c
@@ -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();