On Mon, 2010-04-12 at 13:50 +0200, ext hvaibhav@xxxxxx wrote:
> From: Vaibhav Hiremath <hvaibhav@xxxxxx>
>
> Tested on OMAP3EVM for OMAP3530 and AM/DM 3730.
>
> Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
This patch causes omap_3430sdp_defconfig not to compile:
> ---
> .../video/omap2/displays/panel-sharp-ls037v7dw01.c | 77 ++++++++++++++++++++
> 1 files changed, 77 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
> index 8d51a5e..d84feb0 100644
> --- a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
> +++ b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
> @@ -20,10 +20,16 @@
> #include <linux/module.h>
> #include <linux/delay.h>
> #include <linux/device.h>
> +#include <linux/backlight.h>
> +#include <linux/fb.h>
> #include <linux/err.h>
>
> #include <plat/display.h>
>
> +struct sharp_data {
> + struct backlight_device *bl;
> +};
> +
> static struct omap_video_timings sharp_ls_timings = {
> .x_res = 480,
> .y_res = 640,
> @@ -39,18 +45,89 @@ static struct omap_video_timings sharp_ls_timings = {
> .vbp = 1,
> };
>
> +static int sharp_ls_bl_update_status(struct backlight_device *bl)
> +{
> + struct omap_dss_device *dssdev = dev_get_drvdata(&bl->dev);
> + int level;
> +
> + if (!dssdev->set_backlight)
> + return -EINVAL;
> +
> + if (bl->props.fb_blank == FB_BLANK_UNBLANK &&
> + bl->props.power == FB_BLANK_UNBLANK)
> + level = bl->props.brightness;
> + else
> + level = 0;
> +
> + return dssdev->set_backlight(dssdev, level);
> +}
> +
> +static int sharp_ls_bl_get_brightness(struct backlight_device *bl)
> +{
> + if (bl->props.fb_blank == FB_BLANK_UNBLANK &&
> + bl->props.power == FB_BLANK_UNBLANK)
> + return bl->props.brightness;
> +
> + return 0;
> +}
> +
> +static const struct backlight_ops sharp_ls_bl_ops = {
> + .get_brightness = sharp_ls_bl_get_brightness,
> + .update_status = sharp_ls_bl_update_status,
> +};
> +
> +
> +
> static int sharp_ls_panel_probe(struct omap_dss_device *dssdev)
> {
> + struct backlight_properties props;
> + struct backlight_device *bl;
> + struct sharp_data *sd;
> + int r;
> +
> dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
> OMAP_DSS_LCD_IHS;
> dssdev->panel.acb = 0x28;
> dssdev->panel.timings = sharp_ls_timings;
>
> + sd = kzalloc(sizeof(*sd), GFP_KERNEL);
> + if (!sd)
> + return -ENOMEM;
> +
> + dev_set_drvdata(&dssdev->dev, sd);
> +
> + memset(&props, 0, sizeof(struct backlight_properties));
> + props.max_brightness = dssdev->max_backlight_level;
> +
> + bl = backlight_device_register("sharp-ls", &dssdev->dev, dssdev,
> + &sharp_ls_bl_ops, &props);
> + if (IS_ERR(bl)) {
> + r = PTR_ERR(bl);
> + kfree(sd);
> + return r;
> + }
> + sd->bl = bl;
> +
> + bl->props.fb_blank = FB_BLANK_UNBLANK;
> + bl->props.power = FB_BLANK_UNBLANK;
> + bl->props.brightness = dssdev->max_backlight_level;
> + r = sharp_ls_bl_update_status(bl);
> + if (r < 0)
> + dev_err(&dssdev->dev, "failed to set lcd brightness\n");
> +
> return 0;
> }
>
> static void sharp_ls_panel_remove(struct omap_dss_device *dssdev)
> {
> + struct sharp_data *sd = dev_get_drvdata(&dssdev->dev);
> + struct backlight_device *bl = sd->bl;
> +
> + bl->props.power = FB_BLANK_POWERDOWN;
> + sharp_ls_bl_update_status(bl);
> + backlight_device_unregister(bl);
> +
> + kfree(sd);
> }
>
> static int sharp_ls_power_on(struct omap_dss_device *dssdev)
> --
> 1.6.2.4
>
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