Hi, Hsin-Yi:
Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx> 於 2020年12月3日 週四 下午4:24寫道：
>
> Similar to a9d9fea74be2 ("drm/mediatek: mtk_dsi: Create connector for bridges"):
>
> Use the drm_bridge_connector helper to create a connector for pipelines
> that use drm_bridge. This allows splitting connector operations across
> multiple bridges when necessary, instead of having the last bridge in
> the chain creating the connector and handling all connector operations
> internally.
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
>
> Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_dpi.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 52f11a63a330..189377e342fa 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -20,6 +20,7 @@
>
> #include <drm/drm_atomic_helper.h>
> #include <drm/drm_bridge.h>
> +#include <drm/drm_bridge_connector.h>
> #include <drm/drm_crtc.h>
> #include <drm/drm_of.h>
> #include <drm/drm_simple_kms_helper.h>
> @@ -66,6 +67,7 @@ struct mtk_dpi {
> struct drm_encoder encoder;
> struct drm_bridge bridge;
> struct drm_bridge *next_bridge;
> + struct drm_connector *connector;
> void __iomem *regs;
> struct device *dev;
> struct clk *engine_clk;
> @@ -603,12 +605,21 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
>
> dpi->encoder.possible_crtcs = mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->ddp_comp);
>
> - ret = drm_bridge_attach(&dpi->encoder, &dpi->bridge, NULL, 0);
> + ret = drm_bridge_attach(&dpi->encoder, &dpi->bridge, NULL,
> + DRM_BRIDGE_ATTACH_NO_CONNECTOR);
> if (ret) {
> dev_err(dev, "Failed to attach bridge: %d\n", ret);
> goto err_cleanup;
> }
>
> + dpi->connector = drm_bridge_connector_init(drm_dev, &dpi->encoder);
> + if (IS_ERR(dpi->connector)) {
> + dev_err(dev, "Unable to create bridge connector\n");
> + ret = PTR_ERR(dpi->connector);
> + goto err_cleanup;
> + }
> + drm_connector_attach_encoder(dpi->connector, &dpi->encoder);
> +
> dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
> dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
> dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
> --
> 2.29.2.576.ga3fc446d84-goog
>
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