[PATCH v1 3/7] drm/mediatek: add dpi driver for mt2701 and mt7623

CK Hu
2018-05-28T09:11:28Z

Hi, Bibby:

On Mon, 2018-05-14 at 15:52 +0800, Bibby Hsieh wrote:
> From: chunhui dai <chunhui.dai@mediatek.com>
>
> This patch adds dpi driver suppot for both mt2701 and mt7623.
> And also support other (existing or future) chips that use
> the same binding and driver.
>
> Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_dpi.c | 24 ++++++++++++++++++++++--
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
> 2 files changed, 23 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 2b8b34c72697..e1af1d0d213d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -640,8 +640,7 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
> }
> drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);
>
> - /* Currently DPI0 is fixed to be driven by OVL1 */
> - dpi->encoder.possible_crtcs = BIT(1);
> + dpi->encoder.possible_crtcs = BIT(0) | BIT(1);

This modification influence not only mt2701, but also mt8173. So move
this to an independent patch.

Regards,
CK

> dpi->encoder.bridge->encoder = &dpi->encoder;
> ret = drm_bridge_attach(&dpi->encoder, dpi->encoder.bridge, NULL);
> if (ret) {
> @@ -690,12 +689,33 @@ static unsigned int mt8173_calculate_factor(int clock)
> return 2 * 3;
> }
>
> +static unsigned int mt2701_calculate_factor(int clock)
> +{
> + if (clock <= 64000)
> + return 16;
> + else if (clock <= 128000)
> + return 8;
> + else if (clock <= 256000)
> + return 4;
> + else
> + return 2;
> +}
> +
> static const struct mtk_dpi_conf mt8173_conf = {
> .cal_factor = mt8173_calculate_factor,
> .reg_h_fre_con = 0xe0,
> };
>
> +static const struct mtk_dpi_conf mt2701_conf = {
> + .cal_factor = mt2701_calculate_factor,
> + .reg_h_fre_con = 0xb0,
> + .edge_sel_en = true,
> +};
> +
> static const struct of_device_id mtk_dpi_of_ids[] = {
> + { .compatible = "mediatek,mt2701-dpi",
> + .data = &mt2701_conf,
> + },
> { .compatible = "mediatek,mt8173-dpi",
> .data = &mt8173_conf,
> },
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index a2ca90fc403c..f4fb86ab7b8d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -372,6 +372,7 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
> { .compatible = "mediatek,mt8173-disp-ufoe", .data = (void *)MTK_DISP_UFOE },
> { .compatible = "mediatek,mt2701-dsi", .data = (void *)MTK_DSI },
> { .compatible = "mediatek,mt8173-dsi", .data = (void *)MTK_DSI },
> + { .compatible = "mediatek,mt2701-dpi", .data = (void *)MTK_DPI },
> { .compatible = "mediatek,mt8173-dpi", .data = (void *)MTK_DPI },
> { .compatible = "mediatek,mt2701-disp-mutex", .data = (void *)MTK_DISP_MUTEX },
> { .compatible = "mediatek,mt8173-disp-mutex", .data = (void *)MTK_DISP_MUTEX },