summaryrefslogtreecommitdiff
path: root/drivers/video/backlight
diff options
context:
space:
mode:
authorOlof Johansson <olof@lixom.net>2013-08-29 10:44:42 -0700
committerOlof Johansson <olof@lixom.net>2013-08-29 10:44:42 -0700
commit293d0e3bf0818f3f7307a56d3ac31f41b5078aa1 (patch)
treeaab2e5026c66d52581c39b5c21aca6e3fd8d0357 /drivers/video/backlight
parenta9b1ae088dcb68c1c026dfaf88e2f223eef31678 (diff)
parent3a76b35186cb967a69c4a3935caf2fdf428e933b (diff)
Merge branch 'armsoc/for-3.12/soc' of git://github.com/broadcom/bcm11351 into next/boards
From Christian Daudt, SoC changes for Broadcom. * 'armsoc/for-3.12/soc' of git://github.com/broadcom/bcm11351: (673 commits) ARM: bcm: Make secure API call optional ARM: DT: binding fixup to align with vendor-prefixes.txt (drivers) ARM: mmc: fix NONREMOVABLE test in sdhci-bcm-kona ARM: bcm: Rename board_bcm mmc: sdhci-bcm-kona: make linker-section warning go away ARM: configs: disable DEBUG_LL in bcm_defconfig ARM: bcm281xx: Board specific reboot code ARM bcm281xx: Turn on socket & network support. ARM: bcm281xx: Turn on L2 cache. + Linux 3.11-rc4 Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/video/backlight')
-rw-r--r--drivers/video/backlight/max8925_bl.c41
1 files changed, 21 insertions, 20 deletions
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index 5ca11b066b7e..886e797f75f9 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -101,33 +101,37 @@ static const struct backlight_ops max8925_backlight_ops = {
.get_brightness = max8925_backlight_get_brightness,
};
-#ifdef CONFIG_OF
-static int max8925_backlight_dt_init(struct platform_device *pdev,
- struct max8925_backlight_pdata *pdata)
+static void max8925_backlight_dt_init(struct platform_device *pdev)
{
struct device_node *nproot = pdev->dev.parent->of_node, *np;
- int dual_string;
+ struct max8925_backlight_pdata *pdata;
+ u32 val;
+
+ if (!nproot || !IS_ENABLED(CONFIG_OF))
+ return;
+
+ pdata = devm_kzalloc(&pdev->dev,
+ sizeof(struct max8925_backlight_pdata),
+ GFP_KERNEL);
+ if (!pdata)
+ return;
- if (!nproot)
- return -ENODEV;
np = of_find_node_by_name(nproot, "backlight");
if (!np) {
dev_err(&pdev->dev, "failed to find backlight node\n");
- return -ENODEV;
+ return;
}
- of_property_read_u32(np, "maxim,max8925-dual-string", &dual_string);
- pdata->dual_string = dual_string;
- return 0;
+ if (!of_property_read_u32(np, "maxim,max8925-dual-string", &val))
+ pdata->dual_string = val;
+
+ pdev->dev.platform_data = pdata;
}
-#else
-#define max8925_backlight_dt_init(x, y) (-1)
-#endif
static int max8925_backlight_probe(struct platform_device *pdev)
{
struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
- struct max8925_backlight_pdata *pdata = pdev->dev.platform_data;
+ struct max8925_backlight_pdata *pdata;
struct max8925_backlight_data *data;
struct backlight_device *bl;
struct backlight_properties props;
@@ -170,13 +174,10 @@ static int max8925_backlight_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, bl);
value = 0;
- if (pdev->dev.parent->of_node && !pdata) {
- pdata = devm_kzalloc(&pdev->dev,
- sizeof(struct max8925_backlight_pdata),
- GFP_KERNEL);
- max8925_backlight_dt_init(pdev, pdata);
- }
+ if (!pdev->dev.platform_data)
+ max8925_backlight_dt_init(pdev);
+ pdata = pdev->dev.platform_data;
if (pdata) {
if (pdata->lxw_scl)
value |= (1 << 7);