[PATCH v3 13/13] drm/msm/dsi: Pass DSC params to drm_panel

[Vinod Koul]

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 <vk...@kernel.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