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[4/6] imx-drm: ipuv3-crtc: Implement mode_fixup

Message ID 1418689764-11276-5-git-send-email-slongerbeam@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Steve Longerbeam Dec. 16, 2014, 12:29 a.m. UTC 
From: Steve Longerbeam <steve_longerbeam@mentor.com>

Ask the IPU display interface, via ipu_di_adjust_videomode(), to
adjust a video mode to meet any DI restrictions. The function takes
a subsystem independent videomode, so the drm_display_mode must be
converted to videomode first, and then the adjusted mode converted
back to a drm_display_mode.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
---
 drivers/gpu/drm/imx/ipuv3-crtc.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 11e84a2..fb16026 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -242,6 +242,18 @@  static bool ipu_crtc_mode_fixup(struct drm_crtc *crtc,
 				  const struct drm_display_mode *mode,
 				  struct drm_display_mode *adjusted_mode)
 {
+	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
+	struct videomode vm;
+	int ret;
+
+	videomode_from_drm_display_mode(adjusted_mode, &vm);
+
+	ret = ipu_di_adjust_videomode(ipu_crtc->di, &vm);
+	if (ret)
+		return false;
+
+	drm_display_mode_from_videomode(&vm, adjusted_mode);
+
 	return true;
 }