avr32: favr-32: use generic pwm_bl driver

Switch to the generic pwm_bl driver instead of atmel-pwm-bl.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/avr32/boards/favr-32/setup.c

@@ -18,7 +18,10 @@
 #include <linux/gpio.h>
 #include <linux/leds.h>
 #include <linux/atmel-mci.h>
-#include <linux/atmel-pwm-bl.h>
+#include <linux/pwm.h>
+#include <linux/pwm_backlight.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 
@@ -33,6 +36,8 @@
 #include <mach/board.h>
 #include <mach/portmux.h>
 
+#define PWM_BL_CH 2
+
 /* Oscillator frequencies. These are board-specific */
 unsigned long at32_board_osc_rates[3] = {
 	[0] = 32768,	/* 32.768 kHz on RTC osc */
@@ -227,29 +232,36 @@ void __init favr32_setup_leds(void)
 	platform_device_register(&favr32_led_dev);
 }
 
-static struct atmel_pwm_bl_platform_data atmel_pwm_bl_pdata = {
-	.pwm_channel		= 2,
-	.pwm_frequency		= 200000,
-	.pwm_compare_max	= 345,
-	.pwm_duty_max		= 345,
-	.pwm_duty_min		= 90,
-	.pwm_active_low		= 1,
-	.gpio_on		= GPIO_PIN_PA(28),
-	.on_active_low		= 0,
+static struct pwm_lookup pwm_lookup[] = {
+	PWM_LOOKUP("at91sam9rl-pwm", PWM_BL_CH, "pwm-backlight.0", NULL,
+		   5000, PWM_POLARITY_INVERSED),
 };
 
-static struct platform_device atmel_pwm_bl_dev = {
-	.name		= "atmel-pwm-bl",
-	.id		= 0,
-	.dev		= {
-		.platform_data = &atmel_pwm_bl_pdata,
+static struct regulator_consumer_supply fixed_power_consumers[] = {
+	REGULATOR_SUPPLY("power", "pwm-backlight.0"),
+};
+
+static struct platform_pwm_backlight_data pwm_bl_data = {
+	.enable_gpio		= GPIO_PIN_PA(28),
+	.max_brightness		= 255,
+	.dft_brightness		= 255,
+	.lth_brightness		= 50,
+};
+
+static struct platform_device pwm_bl_device = {
+	.name = "pwm-backlight",
+	.dev = {
+		.platform_data = &pwm_bl_data,
 	},
 };
 
 static void __init favr32_setup_atmel_pwm_bl(void)
 {
-	platform_device_register(&atmel_pwm_bl_dev);
-	at32_select_gpio(atmel_pwm_bl_pdata.gpio_on, 0);
+	pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
+	regulator_register_always_on(0, "fixed", fixed_power_consumers,
+				    ARRAY_SIZE(fixed_power_consumers), 3300000);
+	platform_device_register(&pwm_bl_device);
+	at32_select_gpio(pwm_bl_data.enable_gpio, 0);
 }
 
 void __init setup_board(void)
@@ -339,7 +351,7 @@ static int __init favr32_init(void)
 
 	set_abdac_rate(at32_add_device_abdac(0, &abdac0_data));
 
-	at32_add_device_pwm(1 << atmel_pwm_bl_pdata.pwm_channel);
+	at32_add_device_pwm(1 << PWM_BL_CH);
 	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
 	at32_add_device_mci(0, &mci0_data);
 	at32_add_device_usba(0, NULL);

arch/avr32/configs/favr-32_defconfig

@@ -67,7 +67,6 @@ CONFIG_MTD_PHYSMAP=y
 CONFIG_BLK_DEV_LOOP=m
 CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_RAM=m
-CONFIG_ATMEL_PWM=m
 CONFIG_ATMEL_TCLIB=y
 CONFIG_ATMEL_SSC=m
 CONFIG_NETDEVICES=y
@@ -108,7 +107,7 @@ CONFIG_FB=y
 CONFIG_FB_ATMEL=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 # CONFIG_LCD_CLASS_DEVICE is not set
-CONFIG_BACKLIGHT_ATMEL_PWM=m
+CONFIG_BACKLIGHT_PWM=m
 CONFIG_SOUND=m
 CONFIG_SOUND_PRIME=m
 # CONFIG_HID_SUPPORT is not set
@@ -123,7 +122,6 @@ CONFIG_MMC=y
 CONFIG_MMC_ATMELMCI=y
 CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
-CONFIG_LEDS_ATMEL_PWM=m
 CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_TIMER=y
@@ -132,6 +130,8 @@ CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_AT32AP700X=y
 CONFIG_DMADEVICES=y
+CONFIG_PWM=y
+CONFIG_PWM_ATMEL=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 # CONFIG_EXT3_FS_XATTR is not set