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Commit b3a85495 authored by Haojian Zhuang's avatar Haojian Zhuang Committed by Eric Miao
Browse files

backlight: da903x_bl: control WLED output current in da9034 



Update WLED output current source before changing brightness.

Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent f64dcac0

drivers/video/backlight/da903x_bl.c

+7 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 


#define DA9034_WLED_CONTROL1	0x3C

#define DA9034_WLED_CONTROL2	0x3D

#define DA9034_WLED_ISET(x)	((x) & 0x1f)



#define DA9034_WLED_BOOST_EN	(1 << 5)
@@ -101,6 +102,7 @@ static struct backlight_ops da903x_backlight_ops = { 


static int da903x_backlight_probe(struct platform_device *pdev)

{

	struct da9034_backlight_pdata *pdata = pdev->dev.platform_data;

	struct da903x_backlight_data *data;

	struct backlight_device *bl;

	int max_brightness;
@@ -127,6 +129,11 @@ static int da903x_backlight_probe(struct platform_device *pdev) 
	data->da903x_dev = pdev->dev.parent;

	data->current_brightness = 0;



	/* adjust the WLED output current */

	if (pdata)

		da903x_write(data->da903x_dev, DA9034_WLED_CONTROL2,

				DA9034_WLED_ISET(pdata->output_current));



	bl = backlight_device_register(pdev->name, data->da903x_dev,

			data, &da903x_backlight_ops);

	if (IS_ERR(bl)) {

include/linux/mfd/da903x.h

+4 −0
Original line number Diff line number Diff line
@@ -96,6 +96,10 @@ struct da9034_touch_pdata { 
	int	y_inverted;

};



struct da9034_backlight_pdata {

	int	output_current;	/* output current of WLED, from 0-31 (in mA) */

};



/* DA9030 battery charger data */

struct power_supply_info;