--- a/drivers/ssb/pcihost_wrapper.c +++ b/drivers/ssb/pcihost_wrapper.c @@ -11,15 +11,17 @@ * Licensed under the GNU/GPL. See COPYING for details. */ +#include #include #include #include #include -#ifdef CONFIG_PM -static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state) +#ifdef CONFIG_PM_SLEEP +static int ssb_pcihost_suspend(struct device *d) { + struct pci_dev *dev = to_pci_dev(d); struct ssb_bus *ssb = pci_get_drvdata(dev); int err; @@ -28,17 +30,23 @@ static int ssb_pcihost_suspend(struct pc return err; pci_save_state(dev); pci_disable_device(dev); - pci_set_power_state(dev, pci_choose_state(dev, state)); + + /* if there is a wakeup enabled child device on ssb bus, + enable pci wakeup posibility. */ + device_set_wakeup_enable(d, d->power.wakeup_path); + + pci_prepare_to_sleep(dev); return 0; } -static int ssb_pcihost_resume(struct pci_dev *dev) +static int ssb_pcihost_resume(struct device *d) { + struct pci_dev *dev = to_pci_dev(d); struct ssb_bus *ssb = pci_get_drvdata(dev); int err; - pci_set_power_state(dev, PCI_D0); + pci_back_from_sleep(dev); err = pci_enable_device(dev); if (err) return err; @@ -49,10 +57,12 @@ static int ssb_pcihost_resume(struct pci return 0; } -#else /* CONFIG_PM */ -# define ssb_pcihost_suspend NULL -# define ssb_pcihost_resume NULL -#endif /* CONFIG_PM */ + +static const struct dev_pm_ops ssb_pcihost_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ssb_pcihost_suspend, ssb_pcihost_resume) +}; + +#endif /* CONFIG_PM_SLEEP */ static int ssb_pcihost_probe(struct pci_dev *dev, const struct pci_device_id *id) @@ -115,8 +125,9 @@ int ssb_pcihost_register(struct pci_driv { driver->probe = ssb_pcihost_probe; driver->remove = ssb_pcihost_remove; - driver->suspend = ssb_pcihost_suspend; - driver->resume = ssb_pcihost_resume; +#ifdef CONFIG_PM_SLEEP + driver->driver.pm = &ssb_pcihost_pm_ops; +#endif return pci_register_driver(driver); } --- a/drivers/ssb/driver_pcicore.c +++ b/drivers/ssb/driver_pcicore.c @@ -357,6 +357,16 @@ static void ssb_pcicore_init_hostmode(st pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA); + /* + * Accessing PCI config without a proper delay after devices reset (not + * GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704). + * Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it + * completely. Flushing all writes was also tested but with no luck. + * The same problem was reported for WRT350N v1 (BCM4705), so we just + * sleep here unconditionally. + */ + usleep_range(1000, 2000); + /* Enable PCI bridge BAR0 prefetch and burst */ val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; ssb_extpci_write_config(pc, 0, 0, 0, PCI_COMMAND, &val, 2); --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -90,25 +90,6 @@ found: } #endif /* CONFIG_SSB_PCMCIAHOST */ -#ifdef CONFIG_SSB_SDIOHOST -struct ssb_bus *ssb_sdio_func_to_bus(struct sdio_func *func) -{ - struct ssb_bus *bus; - - ssb_buses_lock(); - list_for_each_entry(bus, &buses, list) { - if (bus->bustype == SSB_BUSTYPE_SDIO && - bus->host_sdio == func) - goto found; - } - bus = NULL; -found: - ssb_buses_unlock(); - - return bus; -} -#endif /* CONFIG_SSB_SDIOHOST */ - int ssb_for_each_bus_call(unsigned long data, int (*func)(struct ssb_bus *bus, unsigned long data)) { @@ -1154,6 +1135,8 @@ static u32 ssb_tmslow_reject_bitmask(str case SSB_IDLOW_SSBREV_25: /* TODO - find the proper REJECT bit */ case SSB_IDLOW_SSBREV_27: /* same here */ return SSB_TMSLOW_REJECT; /* this is a guess */ + case SSB_IDLOW_SSBREV: + break; default: WARN(1, KERN_INFO "ssb: Backplane Revision 0x%.8X\n", rev); }