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| author | Matus Ujhelyi <ujhelyi.m@gmail.com> | 2013-04-30 01:18:08 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 03:28:19 +0200 |
| commit | 4d22f8c306233433bdf9298b2e7806e9c71674bc (patch) | |
| tree | 49b3a37f0cb85d98936d4e02b66e85f27f50c158 /drivers/video/backlight | |
| parent | Documentation: add missing documentation for tps65217-bl device tree binding (diff) | |
| download | linux-4d22f8c306233433bdf9298b2e7806e9c71674bc.tar.xz linux-4d22f8c306233433bdf9298b2e7806e9c71674bc.zip | |
drivers/video/backlight/tps65217_bl.c add default brightness value option
Signed-off-by: Matus Ujhelyi <matus.ujhelyi@streamunlimited.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/backlight')
| -rw-r--r-- | drivers/video/backlight/tps65217_bl.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/video/backlight/tps65217_bl.c b/drivers/video/backlight/tps65217_bl.c index 70881633b45a..05782312aeb3 100644 --- a/drivers/video/backlight/tps65217_bl.c +++ b/drivers/video/backlight/tps65217_bl.c @@ -245,6 +245,18 @@ tps65217_bl_parse_dt(struct platform_device *pdev) } } + if (!of_property_read_u32(node, "default-brightness", &val)) { + if (val < 0 || + val > 100) { + dev_err(&pdev->dev, + "invalid 'default-brightness' value in the device tree\n"); + err = ERR_PTR(-EINVAL); + goto err; + } + + pdata->dft_brightness = val; + } + of_node_put(node); return pdata; @@ -311,7 +323,8 @@ static int tps65217_bl_probe(struct platform_device *pdev) return PTR_ERR(tps65217_bl->bl); } - tps65217_bl->bl->props.brightness = 0; + tps65217_bl->bl->props.brightness = pdata->dft_brightness; + backlight_update_status(tps65217_bl->bl); platform_set_drvdata(pdev, tps65217_bl); return 0; |