[v6] MediaTek DisplayPort: support eDP and aux-bus

[PATCH v6 05/11] drm/mediatek: dp: Move AUX_P0 setting to mtk_dp_initialize_aux_settings()

Posted by AngeloGioacchino Del Regno 1 year, 3 months ago

Move the register write to MTK_DP_AUX_P0_3690 to set the AUX reply mode
to function mtk_dp_initialize_aux_settings(), as this is effectively
part of the DPTX AUX setup sequence.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
---
 drivers/gpu/drm/mediatek/mtk_dp.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index fc6cabf5370b..e8d3bf310608 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -1009,6 +1009,11 @@ static void mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp)
 	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8,
 			   MTK_ATOP_EN_AUX_TX_P0,
 			   MTK_ATOP_EN_AUX_TX_P0);
+
+	/* Set complete reply mode for AUX */
+	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
+			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0,
+			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0);
 }
 
 static void mtk_dp_initialize_digital_settings(struct mtk_dp *mtk_dp)
@@ -1826,10 +1831,6 @@ static void mtk_dp_init_port(struct mtk_dp *mtk_dp)
 	mtk_dp_initialize_settings(mtk_dp);
 	mtk_dp_initialize_aux_settings(mtk_dp);
 	mtk_dp_initialize_digital_settings(mtk_dp);
-
-	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
-			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0,
-			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0);
 	mtk_dp_initialize_hpd_detect_settings(mtk_dp);
 
 	mtk_dp_digital_sw_reset(mtk_dp);
-- 
2.40.1

Re: [PATCH v6 05/11] drm/mediatek: dp: Move AUX_P0 setting to mtk_dp_initialize_aux_settings()

Posted by Alexandre Mergnat 1 year, 3 months ago

Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>

On 17/07/2023 16:14, AngeloGioacchino Del Regno wrote:
> Move the register write to MTK_DP_AUX_P0_3690 to set the AUX reply mode
> to function mtk_dp_initialize_aux_settings(), as this is effectively
> part of the DPTX AUX setup sequence.

-- 
Regards,
Alexandre

Re: [PATCH v6 05/11] drm/mediatek: dp: Move AUX_P0 setting to mtk_dp_initialize_aux_settings()

Posted by CK Hu (胡俊光) 1 year, 3 months ago

Hi, Angelo:

On Mon, 2023-07-17 at 16:14 +0200, AngeloGioacchino Del Regno wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  Move the register write to MTK_DP_AUX_P0_3690 to set the AUX reply
> mode
> to function mtk_dp_initialize_aux_settings(), as this is effectively
> part of the DPTX AUX setup sequence.

Reviewed-by: CK Hu <ck.hu@mediatek.com>

> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> Tested-by: Chen-Yu Tsai <wenst@chromium.org>
> ---
>  drivers/gpu/drm/mediatek/mtk_dp.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c
> b/drivers/gpu/drm/mediatek/mtk_dp.c
> index fc6cabf5370b..e8d3bf310608 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -1009,6 +1009,11 @@ static void
> mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp)
>  	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8,
>  			   MTK_ATOP_EN_AUX_TX_P0,
>  			   MTK_ATOP_EN_AUX_TX_P0);
> +
> +	/* Set complete reply mode for AUX */
> +	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
> +			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0,
> +			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0);
>  }
>  
>  static void mtk_dp_initialize_digital_settings(struct mtk_dp
> *mtk_dp)
> @@ -1826,10 +1831,6 @@ static void mtk_dp_init_port(struct mtk_dp
> *mtk_dp)
>  	mtk_dp_initialize_settings(mtk_dp);
>  	mtk_dp_initialize_aux_settings(mtk_dp);
>  	mtk_dp_initialize_digital_settings(mtk_dp);
> -
> -	mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
> -			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0,
> -			   RX_REPLY_COMPLETE_MODE_AUX_TX_P0);
>  	mtk_dp_initialize_hpd_detect_settings(mtk_dp);
>  
>  	mtk_dp_digital_sw_reset(mtk_dp);
> -- 
> 2.40.1