At Thu, 16 May 2013 16:29:05 +0800, Wang Xingchao wrote:
Haswell doesnot support runtime pm by default. This patch let haswell Display HD-A controller enter runtime suspend, and bring more power saving whith power-well.
Signed-off-by: Wang Xingchao xingchao.wang@linux.intel.com
I don't think it's good to fiddle such a thing in the driver side. If Haswell can support runtime PM really, it should be set commonly.
Takashi
sound/pci/hda/hda_intel.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index bf27693..eb25888 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -3755,6 +3755,12 @@ static int azx_probe(struct pci_dev *pci,
if (pci_dev_run_wake(pci)) pm_runtime_put_noidle(&pci->dev);
else if (chip->driver_caps
& AZX_DCAPS_I915_POWERWELL) {/* Haswell doesnot support runtime pm by default */pm_runtime_put_noidle(&pci->dev);pm_runtime_allow(&pci->dev);}
dev++; complete_all(&chip->probe_wait);
-- 1.7.9.5