3.16.60-rc1 review patch. If anyone has any objections, please let me know.
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From: Bjorn Helgaas bhelgaas@google.com
commit 5938628c51a711ae2169d68b2e3a4f7d93d4dbea upstream.
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 Reviewed-by: Andreas Boll andreas.boll.dev@gmail.com Acked-by: Alex Deucher alexander.deucher@amd.com CC: Maarten Lankhorst maarten.lankhorst@canonical.com [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- drivers/gpu/drm/radeon/radeon_device.c | 11 ----------- drivers/pci/quirks.c | 13 +++++++++++++ 2 files changed, 13 insertions(+), 11 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -105,7 +105,6 @@ static const char radeon_family_name[][1 };
#define RADEON_PX_QUIRK_DISABLE_PX (1 << 0) -#define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
struct radeon_px_quirk { u32 chip_vendor; @@ -132,8 +131,6 @@ static struct radeon_px_quirk radeon_px_ * https://bugs.freedesktop.org/show_bug.cgi?id=101491 */ { PCI_VENDOR_ID_ATI, 0x6741, 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 }, { 0, 0, 0, 0, 0 }, };
@@ -1180,25 +1177,17 @@ static void radeon_check_arguments(struc static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) { struct drm_device *dev = pci_get_drvdata(pdev); - struct radeon_device *rdev = dev->dev_private;
if (radeon_is_px(dev) && state == VGA_SWITCHEROO_OFF) return;
if (state == VGA_SWITCHEROO_ON) { - unsigned d3_delay = dev->pdev->d3_delay; - printk(KERN_INFO "radeon: switched on\n"); /* don't suspend or resume card normally */ dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
- if (d3_delay < 20 && (rdev->px_quirk_flags & RADEON_PX_QUIRK_LONG_WAKEUP)) - dev->pdev->d3_delay = 20; - radeon_resume_kms(dev, true, true);
- dev->pdev->d3_delay = d3_delay; - dev->switch_power_state = DRM_SWITCH_POWER_ON; drm_kms_helper_poll_enable(dev); } else { --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1648,6 +1648,19 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_IN DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
+static void quirk_radeon_pm(struct pci_dev *dev) +{ + if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE && + dev->subsystem_device == 0x00e2) { + if (dev->d3_delay < 20) { + dev->d3_delay = 20; + dev_info(&dev->dev, "extending delay after power-on from D3 to %d msec\n", + dev->d3_delay); + } + } +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm); + #ifdef CONFIG_X86_IO_APIC static int dmi_disable_ioapicreroute(const struct dmi_system_id *d) {