drm/radeon/kms: remove lvds quirks

- no longer needed with the latest new pll algo fixes.
- also don't use lcd pll limits.  They don't seem
to work well for all systems.  If we have a case where
they are useful, we can set the flag for that case.

fixes fdo bug 27083

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/atombios_crtc.c

@@ -521,12 +521,6 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
 				/* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */
 				if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1)
 					adjusted_clock = mode->clock * 2;
-				/* LVDS PLL quirks */
-				if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) {
-					struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
-					pll->algo = dig->pll_algo;
-					pll->flags |= RADEON_PLL_IS_LCD;
-				}
 			} else {
 				if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)
 					pll->flags |= RADEON_PLL_NO_ODD_POST_DIV;

drivers/gpu/drm/radeon/radeon_atombios.c

@@ -1128,30 +1128,6 @@ static struct radeon_atom_ss *radeon_atombios_get_ss_info(struct
 	return ss;
 }
 
-static void radeon_atom_apply_lvds_quirks(struct drm_device *dev,
-					  struct radeon_encoder_atom_dig *lvds)
-{
-
-	/* Toshiba A300-1BU laptop panel doesn't like new pll divider algo */
-	if ((dev->pdev->device == 0x95c4) &&
-	    (dev->pdev->subsystem_vendor == 0x1179) &&
-	    (dev->pdev->subsystem_device == 0xff50)) {
-		if ((lvds->native_mode.hdisplay == 1280) &&
-		    (lvds->native_mode.vdisplay == 800))
-			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;
-	}
-
-}
-
 union lvds_info {
 	struct _ATOM_LVDS_INFO info;
 	struct _ATOM_LVDS_INFO_V12 info_12;
@@ -1234,9 +1210,6 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
 				lvds->pll_algo = PLL_ALGO_LEGACY;
 		}
 
-		/* LVDS quirks */
-		radeon_atom_apply_lvds_quirks(dev, lvds);
-
 		encoder->native_mode = lvds->native_mode;
 	}
 	return lvds;