drm/i915/display: Simplify intel_joiner_num_pipes and its usage

jira NONE_AUTOMATION
Rebuild_History Non-Buildable kernel-5.14.0-570.18.1.el9_6
commit-author Ankit Nautiyal <ankit.k.nautiyal@intel.com>
commit eb920fb

Currently intel_joiner_num_pipes is used to get num of pipes wrt num of
pipes joined. Simplify this by returning 1 when no joiner is used and
update the checks for no joiner case.

v2: Rename the function to intel_crtc_num_joined_pipes and use helper
intel_crtc_joined_pipe_mask. (Ville)

	Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
	Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240916102836.2149012-2-ankit.k.nautiyal@intel.com
(cherry picked from commit eb920fb)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: PlaidCat

drivers/gpu/drm/i915/display/intel_display.c

@@ -277,9 +277,9 @@ bool intel_crtc_is_joiner_primary(const struct intel_crtc_state *crtc_state)
 		crtc->pipe == joiner_primary_pipe(crtc_state);
 }
 
-static int intel_joiner_num_pipes(const struct intel_crtc_state *crtc_state)
+static int intel_crtc_num_joined_pipes(const struct intel_crtc_state *crtc_state)
 {
-	return hweight8(crtc_state->joiner_pipes);
+	return hweight8(intel_crtc_joined_pipe_mask(crtc_state));
 }
 
 u8 intel_crtc_joined_pipe_mask(const struct intel_crtc_state *crtc_state)
@@ -2343,9 +2343,9 @@ static void intel_crtc_compute_pixel_rate(struct intel_crtc_state *crtc_state)
 static void intel_joiner_adjust_timings(const struct intel_crtc_state *crtc_state,
 					struct drm_display_mode *mode)
 {
-	int num_pipes = intel_joiner_num_pipes(crtc_state);
+	int num_pipes = intel_crtc_num_joined_pipes(crtc_state);
 
-	if (num_pipes < 2)
+	if (num_pipes == 1)
 		return;
 
 	mode->crtc_clock /= num_pipes;
@@ -2407,7 +2407,7 @@ static void intel_crtc_readout_derived_state(struct intel_crtc_state *crtc_state
 	drm_mode_copy(mode, pipe_mode);
 	intel_mode_from_crtc_timings(mode, mode);
 	mode->hdisplay = drm_rect_width(&crtc_state->pipe_src) *
-		(intel_joiner_num_pipes(crtc_state) ?: 1);
+		intel_crtc_num_joined_pipes(crtc_state);
 	mode->vdisplay = drm_rect_height(&crtc_state->pipe_src);
 
 	/* Derive per-pipe timings in case joiner is used */
@@ -2427,10 +2427,10 @@ void intel_encoder_get_config(struct intel_encoder *encoder,
 
 static void intel_joiner_compute_pipe_src(struct intel_crtc_state *crtc_state)
 {
-	int num_pipes = intel_joiner_num_pipes(crtc_state);
+	int num_pipes = intel_crtc_num_joined_pipes(crtc_state);
 	int width, height;
 
-	if (num_pipes < 2)
+	if (num_pipes == 1)
 		return;
 
 	width = drm_rect_width(&crtc_state->pipe_src);
@@ -2887,11 +2887,11 @@ static void intel_get_transcoder_timings(struct intel_crtc *crtc,
 static void intel_joiner_adjust_pipe_src(struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	int num_pipes = intel_joiner_num_pipes(crtc_state);
+	int num_pipes = intel_crtc_num_joined_pipes(crtc_state);
 	enum pipe primary_pipe, pipe = crtc->pipe;
 	int width;
 
-	if (num_pipes < 2)
+	if (num_pipes == 1)
 		return;
 
 	primary_pipe = joiner_primary_pipe(crtc_state);