Commit 6b70e481 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau: magic to make auxch on new macbooks booted in EFI mode work 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 2228c6fe

drivers/gpu/drm/nouveau/nouveau_i2c.c

+4 −1
Original line number Diff line number Diff line
@@ -286,7 +286,10 @@ nouveau_i2c_find(struct drm_device *dev, int index) 
			val  = 0xe001;

		}



		nv_wr32(dev, reg, (nv_rd32(dev, reg) & ~0xf003) | val);

		/* nfi, but neither auxch or i2c work if it's 1 */

		nv_mask(dev, reg + 0x0c, 0x00000001, 0x00000000);

		/* nfi, but switches auxch vs normal i2c */

		nv_mask(dev, reg + 0x00, 0x0000f003, val);

	}



	if (!i2c->chan && nouveau_i2c_init(dev, i2c, index))