drm/radeon/kms: add LVDS pll quirk for Dell Studio 15

Commit Message

Alex Deucher Feb. 17, 2010, 7:47 a.m. UTC

None

Patch

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c
b/drivers/gpu/drm/radeon/radeon_atombios.c
index 4f7dbce..b41b4a5 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1109,6 +1109,15 @@  static void
radeon_atom_apply_lvds_quirks(struct drm_device *dev,
 			lvds->pll_algo = PLL_ALGO_LEGACY;
 	}

+	/* Dell Studio 15 laptop panel doesn't like new pll divider algo */
+	if ((dev->pdev->device == 0x95c4) &&
+	    (dev->pdev->subsystem_vendor == 0x1028) &&
+	    (dev->pdev->subsystem_device == 0x029f)) {
+		if ((lvds->native_mode.hdisplay == 1280) &&
+		    (lvds->native_mode.vdisplay == 800))
+			lvds->pll_algo = PLL_ALGO_LEGACY;
+	}
+
 }