linux-kernel - [PATCH v1 1/3] drm/msm/dsi: add msm_dsi_bridge_get_dsc

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Message-ID: <1685464318-25031-2-git-send-email-quic_khsieh@quicinc.com>
Date:   Tue, 30 May 2023 09:31:56 -0700
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     <dri-devel@...ts.freedesktop.org>, <robdclark@...il.com>,
        <sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
        <vkoul@...nel.org>, <daniel@...ll.ch>, <airlied@...il.com>,
        <agross@...nel.org>, <dmitry.baryshkov@...aro.org>,
        <andersson@...nel.org>
CC:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        <quic_abhinavk@...cinc.com>, <quic_jesszhan@...cinc.com>,
        <quic_sbillaka@...cinc.com>, <marijn.suijten@...ainline.org>,
        <freedreno@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 1/3] drm/msm/dsi: add msm_dsi_bridge_get_dsc_config()

DSI is implemented as a DRM bridge. It is more logically to access
DSI from outside world through DRM bridge structure. Add DSI bridge
function msm_dsi_bridge_get_dsc_config() to retrieve DSC information.

Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
---
 drivers/gpu/drm/msm/dsi/dsi.c         | 8 ++++++++
 drivers/gpu/drm/msm/dsi/dsi.h         | 2 ++
 drivers/gpu/drm/msm/dsi/dsi_manager.c | 4 ++--
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index baab79a..fa7fcb5 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -17,6 +17,14 @@ struct drm_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
 	return msm_dsi_host_get_dsc_config(msm_dsi->host);
 }
 
+struct drm_dsc_config *msm_dsi_bridge_get_dsc_config(struct drm_bridge *bridge)
+{
+        int id = dsi_mgr_bridge_get_id(bridge);
+        struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
+
+	return msm_dsi_host_get_dsc_config(msm_dsi->host);
+}
+
 static int dsi_get_phy(struct msm_dsi *msm_dsi)
 {
 	struct platform_device *pdev = msm_dsi->pdev;
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index bd3763a..394f605 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -64,6 +64,8 @@ bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
 int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
 void msm_dsi_manager_tpg_enable(void);
+int dsi_mgr_bridge_get_id(struct drm_bridge *bridge);
+struct msm_dsi *dsi_mgr_get_dsi(int id);
 
 /* msm dsi */
 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 1bbac72..5a7ac338 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -60,7 +60,7 @@ static inline bool dsi_mgr_power_on_early(struct drm_bridge *bridge)
 }
 #endif
 
-static inline struct msm_dsi *dsi_mgr_get_dsi(int id)
+struct msm_dsi *dsi_mgr_get_dsi(int id)
 {
 	return msm_dsim_glb.dsi[id];
 }
@@ -218,7 +218,7 @@ struct dsi_bridge {
 
 #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base)
 
-static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge)
+int dsi_mgr_bridge_get_id(struct drm_bridge *bridge)
 {
 	struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge);
 	return dsi_bridge->id;
-- 
2.7.4