2017년 01월 04일 15:58에 Hoegeun Kwon 이(가) 쓴 글:
> Before applying the patch, used the of_get_videomode function to
> parse the display-timings in the panel which is the child driver
> of dsi in the devicetree. this is wrong. So removed the
> of_get_videomode and fixed to get videomode struct through
> mode_set callback function.
>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos_drm_mic.c | 33 ++++++++++++++++++++++-----------
> 1 file changed, 22 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> index a0def0b..9a50ceb 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> @@ -286,13 +286,6 @@ static int parse_dt(struct exynos_mic *mic)
> }
> nodes[j++] = remote_node;
>
> - ret = of_get_videomode(remote_node,
> - &mic->vm, 0);
> - if (ret) {
> - DRM_ERROR("mic: failed to get videomode");
> - goto exit;
> - }
> -
> break;
> default:
> DRM_ERROR("mic: Unknown endpoint from MIC");
> @@ -329,6 +322,27 @@ static void mic_post_disable(struct drm_bridge *bridge)
> mutex_unlock(&mic_mutex);
> }
>
> +static void mic_mode_set(struct drm_bridge *bridge,
> + struct drm_display_mode *mode,
> + struct drm_display_mode *adjusted_mode)
> +{
> + struct exynos_mic *mic = bridge->driver_private;
> +
> + mutex_lock(&mic_mutex);
> + if (mic->enabled)
> + goto already_enabled;
mode setting should be performed every time mode_set callback is called so remove above two lines.
> +
> + drm_display_mode_to_videomode(mode, &mic->vm);
> +
> + if (!mic->i80_mode)
> + mic_set_porch_timing(mic);
> + mic_set_img_size(mic);
> + mic_set_output_timing(mic);
> +
> +already_enabled:
So this label is unnecessary.
> + mutex_unlock(&mic_mutex);
> +}
> +
> static void mic_pre_enable(struct drm_bridge *bridge)
> {
> struct exynos_mic *mic = bridge->driver_private;
> @@ -355,10 +369,6 @@ static void mic_pre_enable(struct drm_bridge *bridge)
> goto turn_off_clks;
> }
>
> - if (!mic->i80_mode)
> - mic_set_porch_timing(mic);
> - mic_set_img_size(mic);
> - mic_set_output_timing(mic);
> mic_set_reg_on(mic, 1);
> mic->enabled = 1;
> mutex_unlock(&mic_mutex);
> @@ -377,6 +387,7 @@ static void mic_enable(struct drm_bridge *bridge) { }
> static const struct drm_bridge_funcs mic_bridge_funcs = {
> .disable = mic_disable,
> .post_disable = mic_post_disable,
> + .mode_set = mic_mode_set,
> .pre_enable = mic_pre_enable,
> .enable = mic_enable,
> };
>
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