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

[xinlei.lee]

From: Xinlei Lee <xinlei....@mediatek.com>

Dpi output needs to adjust the output format to dual edge for MT8186.

Co-developed-by: Jitao Shi <jitao....@mediatek.com>
Signed-off-by: Jitao Shi <jitao....@mediatek.com>
Signed-off-by: Xinlei Lee <xinlei....@mediatek.com>
Reviewed-by: CK Hu <ck...@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno 
<angelogioacchino.delre...@collabora.com>
Reviewed-by: N??colas F. R. A. Prado <nfrapr...@collabora.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