On Wed, Feb 01, 2017 at 04:45:42PM +0100, Andreas Boll wrote:
> 2017-01-30 21:41 GMT+01:00 Bjorn Helgaas <bhelgaas@xxxxxxxxxx>:
> > The PCI Power Management Spec, r1.2, sec 5.6.1, requires a 10 millisecond
> > delay when powering on a device, i.e., transitioning from state D3hot to
> > D0.
> >
> > Apparently some devices require more time, and d1f9809ed131 ("drm/radeon:
> > add quirk for d3 delay during switcheroo poweron for apple macbooks") added
> > an additional delay for the Radeon device in a MacBook Pro. 4807c5a8a0c8
> > ("drm/radeon: add a PX quirk list") made the affected device more explicit.
> >
> > Add a generic PCI quirk to increase the d3_delay. This means we will use
> > the additional delay for *all* wakeups from D3, not just those initiated by
> > radeon_switcheroo_set_state().
> >
> > Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> > CC: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/radeon/radeon_device.c | 12 ------------
> > drivers/pci/quirks.c | 13 +++++++++++++
> > 2 files changed, 13 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
> > index 8a1df2a1afbd..8b8fd981cae5 100644
> > --- a/drivers/gpu/drm/radeon/radeon_device.c
> > +++ b/drivers/gpu/drm/radeon/radeon_device.c
> > @@ -113,7 +113,6 @@ static inline bool radeon_is_atpx_hybrid(void) { return false; }
> > #endif
> >
> > #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
> > -#define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
> >
> > struct radeon_px_quirk {
> > u32 chip_vendor;
> > @@ -136,9 +135,6 @@ static struct radeon_px_quirk radeon_px_quirk_list[] = {
> > * https://bugzilla.kernel.org/show_bug.cgi?id=51381
> > */
> > { PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
> > - /* macbook pro 8.2 */
> > - { PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },
>
> Do you intentionally removed the following line?
> > - { 0, 0, 0, 0, 0 },
Ooh, definitely not! Thanks for catching this. I'll post a v2 that fixes
this.
Bjorn
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