drm/i915/sdvo: Preserve pixel-multiplier

[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_drv.h

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1ca3c9e2667a2f49c3afb009b4b8198437b68a77..64a7c87817d761c48ba79eacce06de998b9d896b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -99,6 +99,24 @@
 #define INTEL_DVO_CHIP_TMDS 2
 #define INTEL_DVO_CHIP_TVOUT 4
 
+/* drm_display_mode->private_flags */
+#define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
+#define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)
+
+static inline void
+intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
+                               int multiplier)
+{
+       mode->clock *= multiplier;
+       mode->private_flags |= multiplier;
+}
+
+static inline int
+intel_mode_get_pixel_multiplier(const struct drm_display_mode *mode)
+{
+       return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK) >> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
+}
+
 struct intel_i2c_chan {
        struct drm_device *drm_dev; /* for getting at dev. private (mmio etc.) */
        u32 reg; /* GPIO reg */