From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Emil Velikov , Ben Skeggs Subject: [ 33/48] drm/nv50/kms: use dac loadval from vbios, where its available Date: Tue, 18 Jun 2013 09:17:59 -0700 Message-Id: <20130618161730.688635361@linuxfoundation.org> In-Reply-To: <20130618161725.912524266@linuxfoundation.org> References: <20130618161725.912524266@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: From: Greg Kroah-Hartman 3.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ben Skeggs commit d40ee48acde16894fb3b241d7e896d5fa84e0f10 upstream. Regression from merging the old nv50/nvd9 code together, and may be needed to fully fix fdo#64904. The value is ignored completely by the hardware starting from nva3. Reported-by: Emil Velikov Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1554,7 +1554,9 @@ nv50_dac_detect(struct drm_encoder *enco { struct nv50_disp *disp = nv50_disp(encoder->dev); int ret, or = nouveau_encoder(encoder)->or; - u32 load = 0; + u32 load = nouveau_drm(encoder->dev)->vbios.dactestval; + if (load == 0) + load = 340; ret = nv_exec(disp->core, NV50_DISP_DAC_LOAD + or, &load, sizeof(load)); if (ret || load != 7)