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>

diff --git a/arch/arm/mach-s3c64xx/mach-hmt.c b/arch/arm/mach-s3c64xx/mach-hmt.c
index e4b087c58ee61ae14fbe69f8204c85d806909666..816b39d1e6d1b13c5a074676431b16efb145631c 100644 (file)
--- 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));
 }