drm/i915: Program correct m n tu register for Valleyview

m n tu register offset has changed in Valleyview. Also fixed DP limit frequencies. Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com> Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
git-mirror · Sep 28, 2012 · 74a4dd2 · 74a4dd2
1 parent b56747a
commit 74a4dd2
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Showing 2 changed files with 8 additions and 3 deletions.
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
@@ -393,10 +393,10 @@ static const intel_limit_t intel_limits_vlv_hdmi = {
 };
 
 static const intel_limit_t intel_limits_vlv_dp = {
-	.dot = { .min = 162000, .max = 270000 },
-	.vco = { .min = 5994000, .max = 4000000 },
+	.dot = { .min = 25000, .max = 270000 },
+	.vco = { .min = 4000000, .max = 6000000 },
 	.n = { .min = 1, .max = 7 },
-	.m = { .min = 60, .max = 300 }, /* guess */
+	.m = { .min = 22, .max = 450 },
 	.m1 = { .min = 2, .max = 3 },
 	.m2 = { .min = 11, .max = 156 },
 	.p = { .min = 10, .max = 30 },

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
@@ -805,6 +805,11 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
 		I915_WRITE(TRANSDATA_N1(pipe), m_n.gmch_n);
 		I915_WRITE(TRANSDPLINK_M1(pipe), m_n.link_m);
 		I915_WRITE(TRANSDPLINK_N1(pipe), m_n.link_n);
+	} else if (IS_VALLEYVIEW(dev)) {
+		I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
+		I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
+		I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
+		I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
 	} else {
 		I915_WRITE(PIPE_GMCH_DATA_M(pipe),
 			   ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) |