linux-kernel - [RFC PATCH 13/13] drm/msm/dsi: Pass DSC params to drm

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Date:   Fri, 21 May 2021 18:19:46 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonathan Marek <jonathan@...ek.ca>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org
Subject: [RFC PATCH 13/13] drm/msm/dsi: Pass DSC params to drm_panel

When DSC is enabled, we need to pass the DSC parameters to panel driver
as well, so add a dsc parameter in panel and set it when DSC is enabled

Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 5 +++++
 include/drm/drm_panel.h            | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index e26545fc82e0..7fc7002eda78 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1700,6 +1700,7 @@ static int dsi_host_attach(struct mipi_dsi_host *host,
 					struct mipi_dsi_device *dsi)
 {
 	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
+	struct drm_panel *panel;
 	int ret;
 
 	if (dsi->lanes > msm_host->num_data_lanes)
@@ -1719,6 +1720,10 @@ static int dsi_host_attach(struct mipi_dsi_host *host,
 	if (msm_host->dev)
 		queue_work(msm_host->workqueue, &msm_host->hpd_work);
 
+	panel = msm_dsi_host_get_panel(host);
+	if (panel)
+		panel->dsc = &msm_host->dsc->drm;
+
 	return 0;
 }
 
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 33605c3f0eba..27a7808a29f2 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -171,6 +171,13 @@ struct drm_panel {
 	 * Panel entry in registry.
 	 */
 	struct list_head list;
+
+	/**
+	 * @dsc:
+	 *
+	 * Panel DSC pps payload to be sent
+	 */
+	struct drm_dsc_config *dsc;
 };
 
 void drm_panel_init(struct drm_panel *panel, struct device *dev,
-- 
2.26.3