drm/msm/dp: add displayPort driver support

Add the needed displayPort files to enable DP driver
on msm target.

"dp_display" module is the main module that calls into
other sub-modules. "dp_drm" file represents the interface
between DRM framework and DP driver.

Changes in v12:

-- Add support of pm ops in display port driver
-- Clear bpp depth bits before writing to MISC register
-- Fix edid read

Previous Change log:
https://lkml.kernel.org/lkml/20200818051137.21478-3-tanmay@codeaurora.org/

Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
Signed-off-by: Vara Reddy <varar@codeaurora.org>
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Co-developed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Co-developed-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Co-developed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Co-developed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

1 files changed, 50 insertions, 3 deletions

diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 2ca9c3c03845..ff165dafa6c6 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -160,6 +160,8 @@ struct msm_drm_private {
 	/* DSI is shared by mdp4 and mdp5 */
 	struct msm_dsi *dsi[2];
 
+	struct msm_dp *dp;
+
 	/* when we have more than one 'msm_gpu' these need to be an array: */
 	struct msm_gpu *gpu;
 	struct msm_file_private *lastctx;
@@ -383,6 +385,49 @@ static inline int msm_dsi_modeset_init(struct msm_dsi *msm_dsi,
 }
 #endif
 
+#ifdef CONFIG_DRM_MSM_DP
+int __init msm_dp_register(void);
+void __exit msm_dp_unregister(void);
+int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
+			 struct drm_encoder *encoder);
+int msm_dp_display_enable(struct msm_dp *dp, struct drm_encoder *encoder);
+int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder);
+void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder,
+				struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode);
+
+#else
+static inline int __init msm_dp_register(void)
+{
+	return -EINVAL;
+}
+static inline void __exit msm_dp_unregister(void)
+{
+}
+static inline int msm_dp_modeset_init(struct msm_dp *dp_display,
+				       struct drm_device *dev,
+				       struct drm_encoder *encoder)
+{
+	return -EINVAL;
+}
+static inline int msm_dp_display_enable(struct msm_dp *dp,
+					struct drm_encoder *encoder)
+{
+	return -EINVAL;
+}
+static inline int msm_dp_display_disable(struct msm_dp *dp,
+					struct drm_encoder *encoder)
+{
+	return -EINVAL;
+}
+static inline void msm_dp_display_mode_set(struct msm_dp *dp,
+				struct drm_encoder *encoder,
+				struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode)
+{
+}
+#endif
+
 void __init msm_mdp_register(void);
 void __exit msm_mdp_unregister(void);
 void __init msm_dpu_register(void);
@@ -403,8 +448,9 @@ void msm_perf_debugfs_cleanup(struct msm_drm_private *priv);
 #else
 static inline int msm_debugfs_late_init(struct drm_device *dev) { return 0; }
 __printf(3, 4)
-static inline void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit,
-		const char *fmt, ...) {}
+static inline void msm_rd_dump_submit(struct msm_rd_state *rd,
+			struct msm_gem_submit *submit,
+			const char *fmt, ...) {}
 static inline void msm_rd_debugfs_cleanup(struct msm_drm_private *priv) {}
 static inline void msm_perf_debugfs_cleanup(struct msm_drm_private *priv) {}
 #endif
@@ -424,7 +470,8 @@ struct msm_gpu_submitqueue;
 int msm_submitqueue_init(struct drm_device *drm, struct msm_file_private *ctx);
 struct msm_gpu_submitqueue *msm_submitqueue_get(struct msm_file_private *ctx,
 		u32 id);
-int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
+int msm_submitqueue_create(struct drm_device *drm,
+		struct msm_file_private *ctx,
 		u32 prio, u32 flags, u32 *id);
 int msm_submitqueue_query(struct drm_device *drm, struct msm_file_private *ctx,
 		struct drm_msm_submitqueue_query *args);