Hi Jerry.
On Thu, Dec 12, 2019 at 10:26:14AM +0800, Jerry Han wrote:
> Use the backlight support in drm_panel to simplify the driver
>
> Signed-off-by: Jerry Han <jerry.han.hq@xxxxxxxxx>
> Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/panel/panel-boe-himax8279d.c | 17 +++--------------
> 1 file changed, 3 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-boe-himax8279d.c b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
> index 65ea6f673cdb..3a6ee2069158 100644
> --- a/drivers/gpu/drm/panel/panel-boe-himax8279d.c
> +++ b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
> @@ -6,7 +6,6 @@
> *
> */
>
> -#include <linux/backlight.h>
> #include <linux/delay.h>
> #include <linux/kernel.h>
> #include <linux/module.h>
> @@ -47,7 +46,6 @@ struct panel_info {
> struct mipi_dsi_device *link;
> const struct panel_desc *desc;
>
> - struct backlight_device *backlight;
> struct gpio_desc *enable_gpio;
> struct gpio_desc *pp33_gpio;
> struct gpio_desc *pp18_gpio;
> @@ -93,8 +91,6 @@ static int boe_panel_disable(struct drm_panel *panel)
> if (!pinfo->enabled)
> return 0;
>
> - backlight_disable(pinfo->backlight);
> -
> err = mipi_dsi_dcs_set_display_off(pinfo->link);
> if (err < 0) {
> DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
> @@ -218,13 +214,6 @@ static int boe_panel_enable(struct drm_panel *panel)
> return ret;
> }
>
> - ret = backlight_enable(pinfo->backlight);
> - if (ret) {
> - DRM_DEV_ERROR(panel->drm->dev,
> - "Failed to enable backlight %d\n", ret);
> - return ret;
> - }
> -
> pinfo->enabled = true;
>
> return 0;
> @@ -899,9 +888,9 @@ static int panel_add(struct panel_info *pinfo)
> return ret;
> }
>
> - pinfo->backlight = devm_of_find_backlight(dev);
> - if (IS_ERR(pinfo->backlight))
> - return PTR_ERR(pinfo->backlight);
> + ret = drm_panel_of_backlight(&pinfo->base);
> + if (ret)
> + return ret;
>
> drm_panel_init(&pinfo->base, dev, &panel_funcs,
> DRM_MODE_CONNECTOR_DSI);
The patch looks good.
But we still need the original patch fixed so it can build.
Please resend a v11 that can build.
Sam
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