[05/10] drm/i915/display: Factor out intel_display_{min, max}_pipe_bpp()

Commit Message

Imre Deak April 8, 2025, 9:43 p.m. UTC

Factor out helpers that can be used in a follow-up change to query the
minimum and maximum pipe bpp supported by the HW.

Signed-off-by: Imre Deak <[e-mail]>
---
 drivers/gpu/drm/i915/display/intel_display.c | 28 +++++++++++++-------
 drivers/gpu/drm/i915/display/intel_display.h |  3 +++
 drivers/gpu/drm/i915/display/intel_dp.c      |  2 +-
 3 files changed, 22 insertions(+), 11 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 16fd7c00ba010..621cc581cf51a 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4317,6 +4317,22 @@  compute_sink_pipe_bpp(const struct drm_connector_state *conn_state,
 	return 0;
 }
 
+int intel_display_min_pipe_bpp(void)
+{
+	return 6 * 3;
+}
+
+int intel_display_max_pipe_bpp(struct intel_display *display)
+{
+	if (display->platform.g4x || display->platform.valleyview ||
+	    display->platform.cherryview)
+		return 10*3;
+	else if (DISPLAY_VER(display) >= 5)
+		return 12*3;
+	else
+		return 8*3;
+}
+
 static int
 compute_baseline_pipe_bpp(struct intel_atomic_state *state,
 			  struct intel_crtc *crtc)
@@ -4326,17 +4342,9 @@  compute_baseline_pipe_bpp(struct intel_atomic_state *state,
 		intel_atomic_get_new_crtc_state(state, crtc);
 	struct drm_connector *connector;
 	struct drm_connector_state *connector_state;
-	int bpp, i;
+	int i;
 
-	if (display->platform.g4x || display->platform.valleyview ||
-	    display->platform.cherryview)
-		bpp = 10*3;
-	else if (DISPLAY_VER(display) >= 5)
-		bpp = 12*3;
-	else
-		bpp = 8*3;
-
-	crtc_state->pipe_bpp = bpp;
+	crtc_state->pipe_bpp = intel_display_max_pipe_bpp(display);
 
 	/* Clamp display bpp to connector max bpp */
 	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index 3b54a62c290af..b6610e9175a7a 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -524,6 +524,9 @@  void intel_plane_fixup_bitmasks(struct intel_crtc_state *crtc_state);
 bool intel_crtc_vrr_disabling(struct intel_atomic_state *state,
 			      struct intel_crtc *crtc);
 
+int intel_display_min_pipe_bpp(void);
+int intel_display_max_pipe_bpp(struct intel_display *display);
+
 /* modesetting */
 int intel_modeset_pipes_in_mask_early(struct intel_atomic_state *state,
 				      const char *reason, u8 pipe_mask);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 3cf8d6510bf90..881852390bb81 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1199,7 +1199,7 @@  intel_dp_output_format(struct intel_connector *connector,
 int intel_dp_min_bpp(enum intel_output_format output_format)
 {
 	if (output_format == INTEL_OUTPUT_FORMAT_RGB)
-		return 6 * 3;
+		return intel_display_min_pipe_bpp();
 	else
 		return 8 * 3;
 }