Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 33/48] drm/nv50/kms: use dac loadval from vbios, where its available | Date | Tue, 18 Jun 2013 09:17:59 -0700 |
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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3.9-stable review patch. If anyone has any objections, please let me know.
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From: Ben Skeggs <bskeggs@redhat.com>
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 <emil.l.velikov@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
--- 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)
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