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Commit 09397278 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: add pll quirk for toshiba laptop panel 



The panel on the Toshiba A300-1BU laptop does not like the
PLL dividers selected by the avivo pll algo, but works fine
using the older method.  Add a quirk to handle it.

Should fix fdo bug 26358.

Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
parent 7c27f87d

drivers/gpu/drm/radeon/radeon_atombios.c

+18 −0
Original line number Original line Diff line number Diff line
@@ -1073,6 +1073,21 @@ static struct radeon_atom_ss *radeon_atombios_get_ss_info(struct 
	return ss;

	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;

	}



}



union lvds_info {

union lvds_info {

	struct _ATOM_LVDS_INFO info;

	struct _ATOM_LVDS_INFO info;

	struct _ATOM_LVDS_INFO_V12 info_12;

	struct _ATOM_LVDS_INFO_V12 info_12;
@@ -1151,6 +1166,9 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct 
		} else

		} else

			lvds->pll_algo = PLL_ALGO_LEGACY;

			lvds->pll_algo = PLL_ALGO_LEGACY;





		/* LVDS quirks */

		radeon_atom_apply_lvds_quirks(dev, lvds);



		encoder->native_mode = lvds->native_mode;

		encoder->native_mode = lvds->native_mode;

	}

	}

	return lvds;

	return lvds;