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vendor-reset
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[amd] audio: Preserve PCI config space for audio device

This commit is contained in:
Adam Madsen 2021-01-12 11:22:18 -06:00 committed by Geoffrey McRae
parent eadbb20b38
commit 623fa20705
2 changed files with 59 additions and 39 deletions
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20
src/amd/common.c
View File

@ -84,6 +84,15 @@ int amd_common_pre_reset(struct vendor_reset_dev *dev)
pci_read_config_word(pdev, PCI_COMMAND, &priv->cfg);
pci_write_config_word(pdev, PCI_COMMAND, priv->cfg | PCI_COMMAND_MEMORY | PCI_COMMAND_INTX_DISABLE);
priv->audio_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
pdev->bus->number, 1);
if (priv->audio_pdev)
{
pci_set_power_state(priv->audio_pdev, PCI_D0);
pci_clear_master(priv->audio_pdev);
pci_save_state(priv->audio_pdev);
}
return 0;
err_free:
@ -96,7 +105,8 @@ int amd_common_post_reset(struct vendor_reset_dev *dev)
struct amd_vendor_private *priv = amd_private(dev);
struct pci_dev *pdev = dev->pdev;
if (priv->mmio) {
if (priv->mmio)
{
iounmap(priv->mmio);
priv->mmio = NULL;
}
@ -114,6 +124,14 @@ int amd_common_post_reset(struct vendor_reset_dev *dev)
}
pci_write_config_word(pdev, PCI_COMMAND, priv->cfg);
if (priv->audio_pdev)
{
pci_restore_state(priv->audio_pdev);
pci_set_power_state(priv->audio_pdev, PCI_D3hot);
pci_dev_put(priv->audio_pdev);
priv->audio_pdev = NULL;
}
/* don't try to go to low power if reset failed */
if (!dev->reset_ret)
pci_set_power_state(pdev, PCI_D3hot);

2
src/amd/common.h
View File

@ -117,6 +117,8 @@ struct amd_vendor_private
{
u16 cfg;
struct pci_dev *audio_pdev;
struct vendor_reset_dev *vdev;
struct pci_saved_state *saved_state;
struct amd_fake_dev adev;