drm/mediatek: dp: Add the audio packet flag to mtk_dp_data struct

The audio packet arrangement function is to only arrange audio
packets into the Hblanking area. In order to align with the HW
default setting of mt8195, this function needs to be turned off.
Signed-off-by: Shuijing Li <shuijing.li@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230822024155.26670-3-shuijing.li@mediatek.com/Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

drivers/gpu/drm/mediatek/mtk_dp.c

@@ -141,6 +141,7 @@ struct mtk_dp_data {
 	unsigned int smc_cmd;
 	const struct mtk_dp_efuse_fmt *efuse_fmt;
 	bool audio_supported;
+	bool audio_pkt_in_hblank_area;
 };
 
 static const struct mtk_dp_efuse_fmt mt8195_edp_efuse_fmt[MTK_DP_CAL_MAX] = {
@@ -1394,6 +1395,18 @@ static void mtk_dp_sdp_set_down_cnt_init_in_hblank(struct mtk_dp *mtk_dp)
 			   SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
 }
 
+static void mtk_dp_audio_sample_arrange_disable(struct mtk_dp *mtk_dp)
+{
+	/* arrange audio packets into the Hblanking and Vblanking area */
+	if (!mtk_dp->data->audio_pkt_in_hblank_area)
+		return;
+
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3374, 0,
+			   SDP_ASP_INSERT_IN_HBLANK_DP_ENC1_P0_MASK);
+	mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3374, 0,
+			   SDP_DOWN_ASP_CNT_INIT_DP_ENC1_P0_MASK);
+}
+
 static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp)
 {
 	u32 sram_read_start = min_t(u32, MTK_DP_TBC_BUF_READ_START_ADDR,
@@ -1403,6 +1416,7 @@ static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp)
 				    MTK_DP_PIX_PER_ADDR);
 	mtk_dp_set_sram_read_start(mtk_dp, sram_read_start);
 	mtk_dp_setup_encoder(mtk_dp);
+	mtk_dp_audio_sample_arrange_disable(mtk_dp);
 	mtk_dp_sdp_set_down_cnt_init_in_hblank(mtk_dp);
 	mtk_dp_sdp_set_down_cnt_init(mtk_dp, sram_read_start);
 }

drivers/gpu/drm/mediatek/mtk_dp_reg.h

@@ -228,6 +228,11 @@
 							 VIDEO_STABLE_CNT_THRD_DP_ENC1_P0 | \
 							 SDP_DP13_EN_DP_ENC1_P0 | \
 							 BS2BS_MODE_DP_ENC1_P0)
+
+#define MTK_DP_ENC1_P0_3374			0x3374
+#define SDP_ASP_INSERT_IN_HBLANK_DP_ENC1_P0_MASK	BIT(12)
+#define SDP_DOWN_ASP_CNT_INIT_DP_ENC1_P0_MASK		GENMASK(11, 0)
+
 #define MTK_DP_ENC1_P0_33F4			0x33f4
 #define DP_ENC_DUMMY_RW_1_AUDIO_RST_EN			BIT(0)
 #define DP_ENC_DUMMY_RW_1				BIT(9)