On Fri, 21 Sep 2012 10:27:07 +0900
Jingoo Han <jg1....@samsung.com> wrote:
> This patch adds the of_match_table to platform-lcd driver to be
> probed when platform-lcd device node is found in the device tree.
>
> Cc: Richard Purdie <rpur...@rpsys.net>
> Signed-off-by: Jingoo Han <jg1....@samsung.com>
> ---
> drivers/video/backlight/platform_lcd.c | 9 +++++++++
> 1 files changed, 9 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/video/backlight/platform_lcd.c
> b/drivers/video/backlight/platform_lcd.c
> index b667234..574d5ee 100644
> --- a/drivers/video/backlight/platform_lcd.c
> +++ b/drivers/video/backlight/platform_lcd.c
> @@ -145,6 +145,14 @@ static SIMPLE_DEV_PM_OPS(platform_lcd_pm_ops,
> platform_lcd_suspend,
> platform_lcd_resume);
> #endif
>
> +#ifdef CONFIG_OF
> +static const struct of_device_id platform_lcd_of_match[] = {
> + { .compatible = "platform-lcd" },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, platform_lcd_of_match);
> +#endif
> +
> static struct platform_driver platform_lcd_driver = {
> .driver = {
> .name = "platform-lcd",
> @@ -152,6 +160,7 @@ static struct platform_driver platform_lcd_driver = {
> #ifdef CONFIG_PM
> .pm = &platform_lcd_pm_ops,
> #endif
> + .of_match_table = of_match_ptr(platform_lcd_of_match),
> },
> .probe = platform_lcd_probe,
> .remove = __devexit_p(platform_lcd_remove),
This .c file includes no open-firmware headers.
It does happen to get a copy of of.h via fb.h->i2c.h->of.h, but that
was just luck.
I did this:
---
a/drivers/video/backlight/platform_lcd.c~backlight-platform-lcd-add-support-for-device-tree-based-probe-fix
+++ a/drivers/video/backlight/platform_lcd.c
@@ -16,6 +16,7 @@
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/lcd.h>
+#include <linux/of.h>
#include <linux/slab.h>
#include <video/platform_lcd.h>
_
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