linux-kernel - [PATCH v4 1/4] drm/msm/dpu: Move setting of dpu_enc::wide_bus

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Message-ID: <20230822-add-widebus-support-v4-1-9dc86083d6ea@quicinc.com>
Date:   Tue, 22 Aug 2023 10:42:04 -0700
From:   Jessica Zhang <quic_jesszhan@...cinc.com>
To:     Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>
CC:     <quic_abhinavk@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>
Subject: [PATCH v4 1/4] drm/msm/dpu: Move setting of dpu_enc::wide_bus_en
 to atomic enable()

Move the setting of dpu_enc::wide_bus_en to
dpu_encoder_virt_atomic_enable() so that it mirrors how dpu_enc::dsc
is being set.

Since wide bus for DSI is related to DSC, having it mirror how DSC
is set in DPU will also make it easier to accommodate for the possibility
of DSC for DSI being set during runtime in the future.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index d34e684a4178..3dcd37c48aac 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1194,11 +1194,18 @@ static void dpu_encoder_virt_atomic_enable(struct drm_encoder *drm_enc,
 	struct dpu_encoder_virt *dpu_enc = NULL;
 	int ret = 0;
 	struct drm_display_mode *cur_mode = NULL;
+	struct msm_drm_private *priv = drm_enc->dev->dev_private;
+	struct msm_display_info *disp_info;
 
 	dpu_enc = to_dpu_encoder_virt(drm_enc);
+	disp_info = &dpu_enc->disp_info;
 
 	dpu_enc->dsc = dpu_encoder_get_dsc_config(drm_enc);
 
+	if (disp_info->intf_type == INTF_DP)
+		dpu_enc->wide_bus_en = msm_dp_wide_bus_available(
+				priv->dp[disp_info->h_tile_instance[0]]);
+
 	mutex_lock(&dpu_enc->enc_lock);
 	cur_mode = &dpu_enc->base.crtc->state->adjusted_mode;
 
@@ -2383,10 +2390,6 @@ struct drm_encoder *dpu_encoder_init(struct drm_device *dev,
 	timer_setup(&dpu_enc->frame_done_timer,
 			dpu_encoder_frame_done_timeout, 0);
 
-	if (disp_info->intf_type == INTF_DP)
-		dpu_enc->wide_bus_en = msm_dp_wide_bus_available(
-				priv->dp[disp_info->h_tile_instance[0]]);
-
 	INIT_DELAYED_WORK(&dpu_enc->delayed_off_work,
 			dpu_encoder_off_work);
 	dpu_enc->idle_timeout = IDLE_TIMEOUT;

-- 
2.42.0