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authorThierry Reding <thierry.reding@gmail.com>2015-10-13 05:04:22 +0900
committerKukjin Kim <kgene@kernel.org>2015-10-13 05:04:22 +0900
commitdd39be623e733ab90ec36d72e72234cd50156724 (patch)
tree99d06fe254cc321dfca7c215b301472a7a12f262 /arch/arm/mach-s3c64xx
parent799fbf8ceef4621dd3dd01499ef13cab1d082896 (diff)
downloadtalos-obmc-linux-dd39be623e733ab90ec36d72e72234cd50156724.tar.gz
talos-obmc-linux-dd39be623e733ab90ec36d72e72234cd50156724.zip
ARM: S3C64XX: Use PWM lookup table for mach-hmt
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. Signed-off-by: Thierry Reding <thierry.reding@gmail.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
Diffstat (limited to 'arch/arm/mach-s3c64xx')
-rw-r--r--arch/arm/mach-s3c64xx/mach-hmt.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/mach-s3c64xx/mach-hmt.c b/arch/arm/mach-s3c64xx/mach-hmt.c
index e4b087c58ee6..816b39d1e6d1 100644
--- a/arch/arm/mach-s3c64xx/mach-hmt.c
+++ b/arch/arm/mach-s3c64xx/mach-hmt.c
@@ -19,6 +19,7 @@
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/leds.h>
+#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -73,6 +74,11 @@ static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
},
};
+static struct pwm_lookup hmt_pwm_lookup[] = {
+ PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
+ 1000000000 / (100 * 256 * 20), PWM_POLARITY_NORMAL),
+};
+
static int hmt_bl_init(struct device *dev)
{
int ret;
@@ -110,10 +116,8 @@ static void hmt_bl_exit(struct device *dev)
}
static struct platform_pwm_backlight_data hmt_backlight_data = {
- .pwm_id = 1,
.max_brightness = 100 * 256,
.dft_brightness = 40 * 256,
- .pwm_period_ns = 1000000000 / (100 * 256 * 20),
.enable_gpio = -1,
.init = hmt_bl_init,
.notify = hmt_bl_notify,
@@ -268,6 +272,7 @@ static void __init hmt_machine_init(void)
gpio_request(S3C64XX_GPF(13), "usb power");
gpio_direction_output(S3C64XX_GPF(13), 1);
+ pwm_add_table(hmt_pwm_lookup, ARRAY_SIZE(hmt_pwm_lookup));
platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
}
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