backlight: da903x_bl: control WLED output current in da9034
Update WLED output current source before changing brightness. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
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@ -25,6 +25,7 @@
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#define DA9034_WLED_CONTROL1 0x3C
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#define DA9034_WLED_CONTROL2 0x3D
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#define DA9034_WLED_ISET(x) ((x) & 0x1f)
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#define DA9034_WLED_BOOST_EN (1 << 5)
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@ -101,6 +102,7 @@ static struct backlight_ops da903x_backlight_ops = {
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static int da903x_backlight_probe(struct platform_device *pdev)
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{
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struct da9034_backlight_pdata *pdata = pdev->dev.platform_data;
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struct da903x_backlight_data *data;
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struct backlight_device *bl;
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int max_brightness;
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@ -127,6 +129,11 @@ static int da903x_backlight_probe(struct platform_device *pdev)
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data->da903x_dev = pdev->dev.parent;
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data->current_brightness = 0;
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/* adjust the WLED output current */
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if (pdata)
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da903x_write(data->da903x_dev, DA9034_WLED_CONTROL2,
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DA9034_WLED_ISET(pdata->output_current));
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bl = backlight_device_register(pdev->name, data->da903x_dev,
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data, &da903x_backlight_ops);
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if (IS_ERR(bl)) {
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@ -96,6 +96,10 @@ struct da9034_touch_pdata {
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int y_inverted;
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};
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struct da9034_backlight_pdata {
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int output_current; /* output current of WLED, from 0-31 (in mA) */
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};
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/* DA9030 battery charger data */
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struct power_supply_info;
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