From: José Roberto de Souza <jose.souza@intel.com>
Date: Fri, 23 Aug 2019 08:20:43 +0000 (-0700)
Subject: drm: Add for_each_oldnew_intel_crtc_in_state_reverse()
X-Git-Tag: for-linus-20191205~71^2~33^2~291
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=0456417ef680aab9a2aa93b950443e25104101b9;p=linux-block.git

drm: Add for_each_oldnew_intel_crtc_in_state_reverse()

Same as for_each_oldnew_intel_crtc_in_state() but iterates in reverse
order.

v2: Fix additional blank line
v3: Rebase

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190823082055.5992-12-lucas.demarchi@intel.com
---

diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index e57e6969051d..03321fb4a703 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -411,6 +411,15 @@ enum phy_fia {
 	     (__i)++) \
 		for_each_if(crtc)
 
+#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,