linux-kernel - Re: [PATCH v13,2/3] drm: mediatek: Set dpi format in mmsys

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Message-ID: <CAAOTY_9QEZfQC=i_ZLMrQGs80BHbpv93H6bnsw6RkS4z7zXoGQ@mail.gmail.com>
Date:   Tue, 27 Dec 2022 07:12:31 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     xinlei.lee@...iatek.com
Cc:     matthias.bgg@...il.com, rex-bc.chen@...iatek.com,
        angelogioacchino.delregno@...labora.com, jason-jh.lin@...iatek.com,
        nfraprado@...labora.com, chunkuang.hu@...nel.org,
        p.zabel@...gutronix.de, airlied@...ux.ie, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        Jitao Shi <jitao.shi@...iatek.com>
Subject: Re: [PATCH v13,2/3] drm: mediatek: Set dpi format in mmsys

Hi, Xinlei:

<xinlei.lee@...iatek.com> 於 2022年10月24日 週一 上午10:05寫道：
>
> From: Xinlei Lee <xinlei.lee@...iatek.com>
>
> Dpi output needs to adjust the output format to dual edge for MT8186.

Applied to mediatek-drm-next [1], thanks.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next

Regards,
Chun-Kuang.

>
> Co-developed-by: Jitao Shi <jitao.shi@...iatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
> Signed-off-by: Xinlei Lee <xinlei.lee@...iatek.com>
> Reviewed-by: CK Hu <ck.hu@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Reviewed-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 630a4e301ef6..ad87ecddf58d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -15,6 +15,7 @@
>  #include <linux/of_graph.h>
>  #include <linux/pinctrl/consumer.h>
>  #include <linux/platform_device.h>
> +#include <linux/soc/mediatek/mtk-mmsys.h>
>  #include <linux/types.h>
>
>  #include <video/videomode.h>
> @@ -30,6 +31,7 @@
>  #include "mtk_disp_drv.h"
>  #include "mtk_dpi_regs.h"
>  #include "mtk_drm_ddp_comp.h"
> +#include "mtk_drm_drv.h"
>
>  enum mtk_dpi_out_bit_num {
>         MTK_DPI_OUT_BIT_NUM_8BITS,
> @@ -67,6 +69,7 @@ struct mtk_dpi {
>         struct drm_connector *connector;
>         void __iomem *regs;
>         struct device *dev;
> +       struct device *mmsys_dev;
>         struct clk *engine_clk;
>         struct clk *pixel_clk;
>         struct clk *tvd_clk;
> @@ -135,6 +138,7 @@ struct mtk_dpi_yc_limit {
>   * @yuv422_en_bit: Enable bit of yuv422.
>   * @csc_enable_bit: Enable bit of CSC.
>   * @pixels_per_iter: Quantity of transferred pixels per iteration.
> + * @edge_cfg_in_mmsys: If the edge configuration for DPI's output needs to be set in MMSYS.
>   */
>  struct mtk_dpi_conf {
>         unsigned int (*cal_factor)(int clock);
> @@ -153,6 +157,7 @@ struct mtk_dpi_conf {
>         u32 yuv422_en_bit;
>         u32 csc_enable_bit;
>         u32 pixels_per_iter;
> +       bool edge_cfg_in_mmsys;
>  };
>
>  static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
> @@ -449,8 +454,12 @@ static void mtk_dpi_dual_edge(struct mtk_dpi *dpi)
>                 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,
>                              dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE ?
>                              EDGE_SEL : 0, EDGE_SEL);
> +               if (dpi->conf->edge_cfg_in_mmsys)
> +                       mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_DDR_CON);
>         } else {
>                 mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, 0);
> +               if (dpi->conf->edge_cfg_in_mmsys)
> +                       mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_SDR_CON);
>         }
>  }
>
> @@ -778,8 +787,10 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
>  {
>         struct mtk_dpi *dpi = dev_get_drvdata(dev);
>         struct drm_device *drm_dev = data;
> +       struct mtk_drm_private *priv = drm_dev->dev_private;
>         int ret;
>
> +       dpi->mmsys_dev = priv->mmsys_dev;
>         ret = drm_simple_encoder_init(drm_dev, &dpi->encoder,
>                                       DRM_MODE_ENCODER_TMDS);
>         if (ret) {
> --
> 2.18.0
>