[15/39] drm: Add for_each_oldnew_intel_crtc_in_state_reverse()

Commit Message

Lucas De Marchi Aug. 16, 2019, 8:04 a.m. UTC

From: José Roberto de Souza <[e-mail]>

Same as for_each_oldnew_intel_crtc_in_state() but iterates in reverse
order.

Cc: Rodrigo Vivi <[e-mail]>
Cc: Ville Syrjälä <[e-mail]>
Signed-off-by: José Roberto de Souza <[e-mail]>
Signed-off-by: Lucas De Marchi <[e-mail]>
---
 drivers/gpu/drm/i915/display/intel_display.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index fd3043e77b50..c0197380a871 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -411,6 +411,7 @@  enum phy_fia {
 	     (__i)++) \
 		for_each_if(crtc)
 
+
 #define for_each_new_intel_connector_in_state(__state, connector, new_connector_state, __i) \
 	for ((__i) = 0; \
 	     (__i) < (__state)->base.num_connector; \
@@ -419,6 +420,15 @@  enum phy_fia {
 			     ((connector) = to_intel_connector((__state)->base.connectors[__i].ptr), \
 			     (new_connector_state) = to_intel_digital_connector_state((__state)->base.connectors[__i].new_state), 1))
 
+#define for_each_oldnew_intel_crtc_in_state_reverse(__state, crtc, old_crtc_state, new_crtc_state, __i) \
+	for ((__i) = (__state)->base.dev->mode_config.num_crtc - 1; \
+	     (__i) >= 0  && \
+	     ((crtc) = to_intel_crtc((__state)->base.crtcs[__i].ptr), \
+	      (old_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].old_state), \
+	      (new_crtc_state) = to_intel_crtc_state((__state)->base.crtcs[__i].new_state), 1); \
+	     (__i)--) \
+		for_each_if(crtc)
+
 void intel_link_compute_m_n(u16 bpp, int nlanes,
 			    int pixel_clock, int link_clock,
 			    struct intel_link_m_n *m_n,