ARM: pxa: mioa701: 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>

diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c
index 02317ad901e16744ca8c9ac6caa74ddc9a53c441..3b52b1aa06594a7a591045f1b9f195307b0583f4 100644 (file)
--- a/arch/arm/mach-pxa/mioa701.c
+++ b/arch/arm/mach-pxa/mioa701.c
@@ -26,6 +26,7 @@
 #include <linux/input.h>
 #include <linux/delay.h>
 #include <linux/gpio_keys.h>
+#include <linux/pwm.h>
 #include <linux/pwm_backlight.h>
 #include <linux/rtc.h>
 #include <linux/leds.h>
@@ -181,12 +182,15 @@ static unsigned long mioa701_pin_config[] = {
        MFP_CFG_OUT(GPIO116, AF0, DRIVE_HIGH),
 };
 
+static struct pwm_lookup mioa701_pwm_lookup[] = {
+       PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight", NULL, 4000 * 1024,
+                  PWM_POLARITY_NORMAL),
+};
+
 /* LCD Screen and Backlight */
 static struct platform_pwm_backlight_data mioa701_backlight_data = {
-       .pwm_id         = 0,
        .max_brightness = 100,
        .dft_brightness = 50,
-       .pwm_period_ns  = 4000 * 1024,  /* Fl = 250kHz */
        .enable_gpio    = -1,
 };
 
@@ -753,6 +757,7 @@ static void __init mioa701_machine_init(void)
        pxa_set_udc_info(&mioa701_udc_info);
        pxa_set_ac97_info(&mioa701_ac97_info);
        pm_power_off = mioa701_poweroff;
+       pwm_add_table(mioa701_pwm_lookup, ARRAY_SIZE(mioa701_pwm_lookup));
        platform_add_devices(devices, ARRAY_SIZE(devices));
        gsm_init();