drm/i915/dp: constify struct link_config_limits pointers

The limits get passed around, but are only modified in a few
places. Constify the pointers elsewhere so it's easier to follow where
they can be modified.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6ab2f68eef7849aca18e82ad788e44e9f82b576e.1738161945.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

3 files changed, 13 insertions, 13 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index dac56fd17a21..6b64ea775098 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1941,7 +1941,7 @@ static bool is_bw_sufficient_for_dsc_config(u16 compressed_bppx16, u32 link_cloc
 
 static int dsc_compute_link_config(struct intel_dp *intel_dp,
 				   struct intel_crtc_state *pipe_config,
-				   struct link_config_limits *limits,
+				   const struct link_config_limits *limits,
 				   u16 compressed_bppx16,
 				   int timeslots)
 {
@@ -2061,7 +2061,7 @@ static int dsc_src_max_compressed_bpp(struct intel_dp *intel_dp)
 static int
 icl_dsc_compute_link_config(struct intel_dp *intel_dp,
 			    struct intel_crtc_state *pipe_config,
-			    struct link_config_limits *limits,
+			    const struct link_config_limits *limits,
 			    int dsc_max_bpp,
 			    int dsc_min_bpp,
 			    int pipe_bpp,
@@ -2104,7 +2104,7 @@ static int
 xelpd_dsc_compute_link_config(struct intel_dp *intel_dp,
 			      const struct intel_connector *connector,
 			      struct intel_crtc_state *pipe_config,
-			      struct link_config_limits *limits,
+			      const struct link_config_limits *limits,
 			      int dsc_max_bpp,
 			      int dsc_min_bpp,
 			      int pipe_bpp,
@@ -2153,7 +2153,7 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp,
 static int dsc_compute_compressed_bpp(struct intel_dp *intel_dp,
 				      const struct intel_connector *connector,
 				      struct intel_crtc_state *pipe_config,
-				      struct link_config_limits *limits,
+				      const struct link_config_limits *limits,
 				      int pipe_bpp,
 				      int timeslots)
 {
@@ -2185,7 +2185,7 @@ int intel_dp_dsc_min_src_input_bpc(void)
 }
 
 static
-bool is_dsc_pipe_bpp_sufficient(struct link_config_limits *limits,
+bool is_dsc_pipe_bpp_sufficient(const struct link_config_limits *limits,
 				int pipe_bpp)
 {
 	return pipe_bpp >= limits->pipe.min_bpp &&
@@ -2194,7 +2194,7 @@ bool is_dsc_pipe_bpp_sufficient(struct link_config_limits *limits,
 
 static
 int intel_dp_force_dsc_pipe_bpp(struct intel_dp *intel_dp,
-				struct link_config_limits *limits)
+				const struct link_config_limits *limits)
 {
 	struct intel_display *display = to_intel_display(intel_dp);
 	int forced_bpp;
@@ -2220,7 +2220,7 @@ int intel_dp_force_dsc_pipe_bpp(struct intel_dp *intel_dp,
 static int intel_dp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
 					 struct intel_crtc_state *pipe_config,
 					 struct drm_connector_state *conn_state,
-					 struct link_config_limits *limits,
+					 const struct link_config_limits *limits,
 					 int timeslots)
 {
 	const struct intel_connector *connector =
@@ -2270,7 +2270,7 @@ static int intel_dp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
 static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
 					  struct intel_crtc_state *pipe_config,
 					  struct drm_connector_state *conn_state,
-					  struct link_config_limits *limits)
+					  const struct link_config_limits *limits)
 {
 	struct intel_display *display = to_intel_display(intel_dp);
 	struct intel_connector *connector =
@@ -2335,7 +2335,7 @@ static void intel_dp_fec_compute_config(struct intel_dp *intel_dp,
 int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
 				struct intel_crtc_state *pipe_config,
 				struct drm_connector_state *conn_state,
-				struct link_config_limits *limits,
+				const struct link_config_limits *limits,
 				int timeslots,
 				bool compute_pipe_bpp)
 {
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index ca49f0a05da5..ffc27f8ad226 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -75,7 +75,7 @@ int intel_dp_compute_config(struct intel_encoder *encoder,
 int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
 				struct intel_crtc_state *pipe_config,
 				struct drm_connector_state *conn_state,
-				struct link_config_limits *limits,
+				const struct link_config_limits *limits,
 				int timeslots,
 				bool recompute_pipe_bpp);
 void intel_dp_audio_compute_config(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 7c1de9aeeacc..1d5788babcff 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -363,7 +363,7 @@ int intel_dp_mtp_tu_compute_config(struct intel_dp *intel_dp,
 static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp,
 					      struct intel_crtc_state *crtc_state,
 					      int max_bpp, int min_bpp,
-					      struct link_config_limits *limits,
+					      const struct link_config_limits *limits,
 					      struct drm_connector_state *conn_state,
 					      int step, bool dsc)
 {
@@ -388,7 +388,7 @@ static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp,
 static int mst_stream_compute_link_config(struct intel_dp *intel_dp,
 					  struct intel_crtc_state *crtc_state,
 					  struct drm_connector_state *conn_state,
-					  struct link_config_limits *limits)
+					  const struct link_config_limits *limits)
 {
 	/*
 	 * FIXME: allocate the BW according to link_bpp, which in the case of
@@ -404,7 +404,7 @@ static int mst_stream_compute_link_config(struct intel_dp *intel_dp,
 static int mst_stream_dsc_compute_link_config(struct intel_dp *intel_dp,
 					      struct intel_crtc_state *crtc_state,
 					      struct drm_connector_state *conn_state,
-					      struct link_config_limits *limits)
+					      const struct link_config_limits *limits)
 {
 	struct intel_display *display = to_intel_display(intel_dp);
 	struct intel_connector *connector = to_intel_connector(conn_state->connector);