diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/agp/uninorth-agp.c | 52 |
1 files changed, 44 insertions, 8 deletions
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 0f248239b4b..a673971f2a9 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -10,6 +10,7 @@ #include <asm/uninorth.h> #include <asm/pci-bridge.h> #include <asm/prom.h> +#include <asm/pmac_feature.h> #include "agp.h" /* @@ -26,6 +27,7 @@ static int uninorth_rev; static int is_u3; + static int uninorth_fetch_size(void) { int i; @@ -264,7 +266,8 @@ static void uninorth_agp_enable(struct agp_bridge_data *bridge, u32 mode) &scratch); } while ((scratch & PCI_AGP_COMMAND_AGP) == 0 && ++timeout < 1000); if ((scratch & PCI_AGP_COMMAND_AGP) == 0) - printk(KERN_ERR PFX "failed to write UniNorth AGP command reg\n"); + printk(KERN_ERR PFX "failed to write UniNorth AGP" + " command register\n"); if (uninorth_rev >= 0x30) { /* This is an AGP V3 */ @@ -278,13 +281,24 @@ static void uninorth_agp_enable(struct agp_bridge_data *bridge, u32 mode) } #ifdef CONFIG_PM -static int agp_uninorth_suspend(struct pci_dev *pdev, pm_message_t state) +/* + * These Power Management routines are _not_ called by the normal PCI PM layer, + * but directly by the video driver through function pointers in the device + * tree. + */ +static int agp_uninorth_suspend(struct pci_dev *pdev) { + struct agp_bridge_data *bridge; u32 cmd; u8 agp; struct pci_dev *device = NULL; - if (state != PMSG_SUSPEND) + bridge = agp_find_bridge(pdev); + if (bridge == NULL) + return -ENODEV; + + /* Only one suspend supported */ + if (bridge->dev_private_data) return 0; /* turn off AGP on the video chip, if it was enabled */ @@ -315,6 +329,7 @@ static int agp_uninorth_suspend(struct pci_dev *pdev, pm_message_t state) /* turn off AGP on the bridge */ agp = pci_find_capability(pdev, PCI_CAP_ID_AGP); pci_read_config_dword(pdev, agp + PCI_AGP_COMMAND, &cmd); + bridge->dev_private_data = (void *)cmd; if (cmd & PCI_AGP_COMMAND_AGP) { printk("uninorth-agp: disabling AGP on bridge %s\n", pci_name(pdev)); @@ -329,9 +344,23 @@ static int agp_uninorth_suspend(struct pci_dev *pdev, pm_message_t state) static int agp_uninorth_resume(struct pci_dev *pdev) { + struct agp_bridge_data *bridge; + u32 command; + + bridge = agp_find_bridge(pdev); + if (bridge == NULL) + return -ENODEV; + + command = (u32)bridge->dev_private_data; + bridge->dev_private_data = NULL; + if (!(command & PCI_AGP_COMMAND_AGP)) + return 0; + + uninorth_agp_enable(bridge, command); + return 0; } -#endif +#endif /* CONFIG_PM */ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge) { @@ -575,6 +604,12 @@ static int __devinit agp_uninorth_probe(struct pci_dev *pdev, of_node_put(uninorth_node); } +#ifdef CONFIG_PM + /* Inform platform of our suspend/resume caps */ + pmac_register_agp_pm(pdev, agp_uninorth_suspend, agp_uninorth_resume); +#endif + + /* Allocate & setup our driver */ bridge = agp_alloc_bridge(); if (!bridge) return -ENOMEM; @@ -599,6 +634,11 @@ static void __devexit agp_uninorth_remove(struct pci_dev *pdev) { struct agp_bridge_data *bridge = pci_get_drvdata(pdev); +#ifdef CONFIG_PM + /* Inform platform of our suspend/resume caps */ + pmac_register_agp_pm(pdev, NULL, NULL); +#endif + agp_remove_bridge(bridge); agp_put_bridge(bridge); } @@ -622,10 +662,6 @@ static struct pci_driver agp_uninorth_pci_driver = { .id_table = agp_uninorth_pci_table, .probe = agp_uninorth_probe, .remove = agp_uninorth_remove, -#ifdef CONFIG_PM - .suspend = agp_uninorth_suspend, - .resume = agp_uninorth_resume, -#endif }; static int __init agp_uninorth_init(void) |