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authorStuart Bennett <stuart@freedesktop.org>2008-08-12 10:19:18 -0400
committerDave Airlie <airlied@redhat.com>2008-10-16 00:18:20 -0400
commit2a32c3c894bcd3b3f8cc7e23f5ecbebca4a9f8e8 (patch)
tree3be28af58a111f31cbc9f7e671b65d2b64bc3bd6 /drivers/char/agp
parent44d494417278e49f5b42bd3ded1801b6d2254db8 (diff)
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')
-rw-r--r--drivers/char/agp/amd-k7-agp.c38
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)
223 223
224 current_size = A_SIZE_LVL2(agp_bridge->current_size); 224 current_size = A_SIZE_LVL2(agp_bridge->current_size);
225 225
226 /* Get the memory mapped registers */ 226 if (!amd_irongate_private.registers) {
227 pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp); 227 /* Get the memory mapped registers */
228 temp = (temp & PCI_BASE_ADDRESS_MEM_MASK); 228 pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp);
229 amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096); 229 temp = (temp & PCI_BASE_ADDRESS_MEM_MASK);
230 if (!amd_irongate_private.registers) 230 amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096);
231 return -ENOMEM; 231 if (!amd_irongate_private.registers)
232 return -ENOMEM;
233 }
232 234
233 /* Write out the address of the gatt table */ 235 /* Write out the address of the gatt table */
234 writel(agp_bridge->gatt_bus_addr, amd_irongate_private.registers+AMD_ATTBASE); 236 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)
490 agp_put_bridge(bridge); 492 agp_put_bridge(bridge);
491} 493}
492 494
495#ifdef CONFIG_PM
496
497static int agp_amdk7_suspend(struct pci_dev *pdev, pm_message_t state)
498{
499 pci_save_state(pdev);
500 pci_set_power_state(pdev, pci_choose_state(pdev, state));
501
502 return 0;
503}
504
505static int agp_amdk7_resume(struct pci_dev *pdev)
506{
507 pci_set_power_state(pdev, PCI_D0);
508 pci_restore_state(pdev);
509
510 return amd_irongate_driver.configure();
511}
512
513#endif /* CONFIG_PM */
514
493/* must be the same order as name table above */ 515/* must be the same order as name table above */
494static struct pci_device_id agp_amdk7_pci_table[] = { 516static struct pci_device_id agp_amdk7_pci_table[] = {
495 { 517 {
@@ -526,6 +548,10 @@ static struct pci_driver agp_amdk7_pci_driver = {
526 .id_table = agp_amdk7_pci_table, 548 .id_table = agp_amdk7_pci_table,
527 .probe = agp_amdk7_probe, 549 .probe = agp_amdk7_probe,
528 .remove = agp_amdk7_remove, 550 .remove = agp_amdk7_remove,
551#ifdef CONFIG_PM
552 .suspend = agp_amdk7_suspend,
553 .resume = agp_amdk7_resume,
554#endif
529}; 555};
530 556
531static int __init agp_amdk7_init(void) 557static int __init agp_amdk7_init(void)