diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2011-12-09 22:16:07 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-12-13 15:33:30 -0500 |
| commit | 775ab52142b02237a54184238e922251c59a2b5c (patch) | |
| tree | 0bc161bb6b0c15c095c96f0b46a99d7231a414b3 | |
| parent | bbea3bc432dc5c08d09ca5c80afdd82515470688 (diff) | |
| download | linux-775ab52142b02237a54184238e922251c59a2b5c.tar.gz | |
bcma: support for suspend and resume
bcma used to lock up machine without enabling PCI or initializing CC. Cc: stable@vger.kernel.org Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/bcma/bcma_private.h | 3 | ||||
| -rw-r--r-- | drivers/bcma/host_pci.c | 37 | ||||
| -rw-r--r-- | drivers/bcma/main.c | 16 |
3 files changed, 56 insertions, 0 deletions
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h index 30a3085d3354..fda56bde36b8 100644 --- a/drivers/bcma/bcma_private.h +++ b/drivers/bcma/bcma_private.h @@ -18,6 +18,9 @@ void bcma_bus_unregister(struct bcma_bus *bus); int __init bcma_bus_early_register(struct bcma_bus *bus, struct bcma_device *core_cc, struct bcma_device *core_mips); +#ifdef CONFIG_PM +int bcma_bus_resume(struct bcma_bus *bus); +#endif /* scan.c */ int bcma_bus_scan(struct bcma_bus *bus); diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c index b0994c0e05dc..443b83a2fd7a 100644 --- a/drivers/bcma/host_pci.c +++ b/drivers/bcma/host_pci.c @@ -234,6 +234,41 @@ static void bcma_host_pci_remove(struct pci_dev *dev) pci_set_drvdata(dev, NULL); } +#ifdef CONFIG_PM +static int bcma_host_pci_suspend(struct pci_dev *dev, pm_message_t state) +{ + /* Host specific */ + pci_save_state(dev); + pci_disable_device(dev); + pci_set_power_state(dev, pci_choose_state(dev, state)); + + return 0; +} + +static int bcma_host_pci_resume(struct pci_dev *dev) +{ + struct bcma_bus *bus = pci_get_drvdata(dev); + int err; + + /* Host specific */ + pci_set_power_state(dev, 0); + err = pci_enable_device(dev); + if (err) + return err; + pci_restore_state(dev); + + /* Bus specific */ + err = bcma_bus_resume(bus); + if (err) + return err; + + return 0; +} +#else /* CONFIG_PM */ +# define bcma_host_pci_suspend NULL +# define bcma_host_pci_resume NULL +#endif /* CONFIG_PM */ + static DEFINE_PCI_DEVICE_TABLE(bcma_pci_bridge_tbl) = { { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) }, { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4331) }, @@ -249,6 +284,8 @@ static struct pci_driver bcma_pci_bridge_driver = { .id_table = bcma_pci_bridge_tbl, .probe = bcma_host_pci_probe, .remove = bcma_host_pci_remove, + .suspend = bcma_host_pci_suspend, + .resume = bcma_host_pci_resume, }; int __init bcma_host_pci_init(void) diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c index 70c84b951098..10f92b371e58 100644 --- a/drivers/bcma/main.c +++ b/drivers/bcma/main.c @@ -240,6 +240,22 @@ int __init bcma_bus_early_register(struct bcma_bus *bus, return 0; } +#ifdef CONFIG_PM +int bcma_bus_resume(struct bcma_bus *bus) +{ + struct bcma_device *core; + + /* Init CC core */ + core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); + if (core) { + bus->drv_cc.setup_done = false; + bcma_core_chipcommon_init(&bus->drv_cc); + } + + return 0; +} +#endif + int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) { drv->drv.name = drv->name; |