Commit 5addcf0a5f0f ("nouveau: add runtime PM support (v0.9)") prevents
runtime suspend of the GPU if its integrated HDA controller is not bound
to a driver. The rationale appears to be that probing the HDA fails if
the GPU is in D3cold.
However we now use a device link to ensure that the GPU is runtime
resumed while the HDA controller is probed, rendering this safety
measure obsolete. Remove it.
Cc: Dave Airlie <airl...@redhat.com>
Cc: Ben Skeggs <bske...@redhat.com>
Cc: Takashi Iwai <ti...@suse.de>
Cc: Peter Wu <pe...@lekensteyn.nl>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Signed-off-by: Lukas Wunner <lu...@wunner.de>
---
drivers/gpu/drm/nouveau/nouveau_drm.c | 44 -----------------------------------
drivers/gpu/drm/nouveau/nouveau_drv.h | 1 -
2 files changed, 45 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c
b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 6959951d45d6..bbbf353682e1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -510,37 +510,6 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
return 0;
}
-#define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403
-
-static void
-nouveau_get_hdmi_dev(struct nouveau_drm *drm)
-{
- struct pci_dev *pdev = drm->dev->pdev;
-
- if (!pdev) {
- NV_DEBUG(drm, "not a PCI device; no HDMI\n");
- drm->hdmi_device = NULL;
- return;
- }
-
- /* subfunction one is a hdmi audio device? */
- drm->hdmi_device = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
- (unsigned int)pdev->bus->number,
-
PCI_DEVFN(PCI_SLOT(pdev->devfn), 1));
-
- if (!drm->hdmi_device) {
- NV_DEBUG(drm, "hdmi device not found %d %d %d\n",
pdev->bus->number, PCI_SLOT(pdev->devfn), 1);
- return;
- }
-
- if ((drm->hdmi_device->class >> 8) != PCI_CLASS_MULTIMEDIA_HD_AUDIO) {
- NV_DEBUG(drm, "possible hdmi device not audio %d\n",
drm->hdmi_device->class);
- pci_dev_put(drm->hdmi_device);
- drm->hdmi_device = NULL;
- return;
- }
-}
-
static int
nouveau_drm_load(struct drm_device *dev, unsigned long flags)
{
@@ -568,8 +537,6 @@ nouveau_drm_load(struct drm_device *dev, unsigned long
flags)
INIT_LIST_HEAD(&drm->clients);
spin_lock_init(&drm->tile.lock);
- nouveau_get_hdmi_dev(drm);
-
/* workaround an odd issue on nvc1 by disabling the device's
* nosnoop capability. hopefully won't cause issues until a
* better fix is found - assuming there is one...
@@ -655,8 +622,6 @@ nouveau_drm_unload(struct drm_device *dev)
nouveau_ttm_fini(drm);
nouveau_vga_fini(drm);
- if (drm->hdmi_device)
- pci_dev_put(drm->hdmi_device);
nouveau_cli_fini(&drm->client);
nouveau_cli_fini(&drm->master);
kfree(drm);
@@ -911,15 +876,6 @@ nouveau_pmops_runtime_idle(struct device *dev)
return -EBUSY;
}
- /* if we have a hdmi audio device - make sure it has a driver loaded */
- if (drm->hdmi_device) {
- if (!drm->hdmi_device->driver) {
- DRM_DEBUG_DRIVER("failing to power off - no HDMI audio
driver loaded\n");
- pm_runtime_mark_last_busy(dev);
- return -EBUSY;
- }
- }
-
list_for_each_entry(crtc, &drm->dev->mode_config.crtc_list, head) {
if (crtc->enabled) {
DRM_DEBUG_DRIVER("failing to power off - crtc
active\n");
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h
b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 96f6bd8aee5d..881b44b89a01 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -208,7 +208,6 @@ struct nouveau_drm {
bool have_disp_power_ref;
struct dev_pm_domain vga_pm_domain;
- struct pci_dev *hdmi_device;
};
static inline struct nouveau_drm *
--
2.15.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
