linux-kernel - [PATCH v3 13/13] drm/msm/dsi: Pass DSC params to drm

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Message-Id: <20211116062256.2417186-14-vkoul@kernel.org>
Date:   Tue, 16 Nov 2021 11:52:56 +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>,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org
Subject: [PATCH v3 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 | 16 +++++++++++++++-
 include/drm/drm_panel.h            |  7 +++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 2c14c36f0b3d..3d5773fcf496 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2159,11 +2159,25 @@ int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
 	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
 	const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
 	struct msm_drm_private *priv;
+	struct drm_panel *panel;
 	int ret;
 
 	msm_host->dev = dev;
+	panel = msm_dsi_host_get_panel(&msm_host->base);
 	priv = dev->dev_private;
-	priv->dsc = msm_host->dsc;
+
+	if (panel && panel->dsc) {
+		struct msm_display_dsc_config *dsc = priv->dsc;
+
+		if (!dsc) {
+			dsc = kzalloc(sizeof(*dsc), GFP_KERNEL);
+			if (!dsc)
+				return -ENOMEM;
+			dsc->drm = panel->dsc;
+			priv->dsc = dsc;
+			msm_host->dsc = dsc;
+		}
+	}
 
 	ret = cfg_hnd->ops->tx_buf_alloc(msm_host, SZ_4K);
 	if (ret) {
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 4602f833eb51..eb8ae9bf32ed 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,
-- 
2.31.1