ARM: S3C64XX: Use PWM lookup table for mach-smartq

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-smartq.c b/arch/arm/mach-s3c64xx/mach-smartq.c
index b3d13537a7f0b2a0ce1fb3adfcd28efce08f7c3b..7b8a3699795c0e636210455535b36c7e57566606 100644 (file)
--- a/arch/arm/mach-s3c64xx/mach-smartq.c
+++ b/arch/arm/mach-s3c64xx/mach-smartq.c
@@ -14,6 +14,7 @@
 #include <linux/gpio.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/pwm.h>
 #include <linux/pwm_backlight.h>
 #include <linux/serial_core.h>
 #include <linux/serial_s3c.h>
@@ -139,6 +140,11 @@ static struct platform_device smartq_usb_otg_vbus_dev = {
        .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 };
 
+static struct pwm_lookup smartq_pwm_lookup[] = {
+       PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
+                  1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
+};
+
 static int smartq_bl_init(struct device *dev)
 {
     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
@@ -147,10 +153,8 @@ static int smartq_bl_init(struct device *dev)
 }
 
 static struct platform_pwm_backlight_data smartq_backlight_data = {
-       .pwm_id         = 1,
        .max_brightness = 1000,
        .dft_brightness = 600,
-       .pwm_period_ns  = 1000000000 / (1000 * 20),
        .enable_gpio    = -1,
        .init           = smartq_bl_init,
 };
@@ -396,5 +400,6 @@ void __init smartq_machine_init(void)
        WARN_ON(smartq_usb_host_init());
        WARN_ON(smartq_wifi_init());
 
+       pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
        platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 }