On Wed, Feb 01, 2017 at 04:45:42PM +0100, Andreas Boll wrote:
2017-01-30 21:41 GMT+01:00 Bjorn Helgaas bhelgaas@google.com:
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@google.com CC: Maarten Lankhorst maarten.lankhorst@canonical.com
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