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| author | Stuart Bennett <stuart@freedesktop.org> | 2008-08-12 15:19:18 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2008-10-16 14:18:20 +1000 |
| commit | 2a32c3c894bcd3b3f8cc7e23f5ecbebca4a9f8e8 (patch) | |
| tree | 3be28af58a111f31cbc9f7e671b65d2b64bc3bd6 /drivers/char/agp/amd-k7-agp.c | |
| parent | 44d494417278e49f5b42bd3ded1801b6d2254db8 (diff) | |
| download | linux-rt-2a32c3c894bcd3b3f8cc7e23f5ecbebca4a9f8e8.tar.gz | |
agp/amd-k7: Suspend support for AMD K7 GART driver
Reinitialize bridge registers after suspend, but avoid repeating the ioremap
Tested and works on AMD761
Signed-off-by: Stuart Bennett <stuart@freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/char/agp/amd-k7-agp.c')
| -rw-r--r-- | drivers/char/agp/amd-k7-agp.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c index e280531843be..c9e3310a7d9d 100644 --- a/drivers/char/agp/amd-k7-agp.c +++ b/drivers/char/agp/amd-k7-agp.c @@ -223,12 +223,14 @@ static int amd_irongate_configure(void) current_size = A_SIZE_LVL2(agp_bridge->current_size); - /* Get the memory mapped registers */ - pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp); - temp = (temp & PCI_BASE_ADDRESS_MEM_MASK); - amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096); - if (!amd_irongate_private.registers) - return -ENOMEM; + if (!amd_irongate_private.registers) { + /* Get the memory mapped registers */ + pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp); + temp = (temp & PCI_BASE_ADDRESS_MEM_MASK); + amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096); + if (!amd_irongate_private.registers) + return -ENOMEM; + } /* Write out the address of the gatt table */ writel(agp_bridge->gatt_bus_addr, amd_irongate_private.registers+AMD_ATTBASE); @@ -490,6 +492,26 @@ static void __devexit agp_amdk7_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } +#ifdef CONFIG_PM + +static int agp_amdk7_suspend(struct pci_dev *pdev, pm_message_t state) +{ + pci_save_state(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +static int agp_amdk7_resume(struct pci_dev *pdev) +{ + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + + return amd_irongate_driver.configure(); +} + +#endif /* CONFIG_PM */ + /* must be the same order as name table above */ static struct pci_device_id agp_amdk7_pci_table[] = { { @@ -526,6 +548,10 @@ static struct pci_driver agp_amdk7_pci_driver = { .id_table = agp_amdk7_pci_table, .probe = agp_amdk7_probe, .remove = agp_amdk7_remove, +#ifdef CONFIG_PM + .suspend = agp_amdk7_suspend, + .resume = agp_amdk7_resume, +#endif }; static int __init agp_amdk7_init(void) |