target/linux/generic/patches-3.18/020-ssb_update.patch

   1 --- a/drivers/ssb/pcihost_wrapper.c
   2 +++ b/drivers/ssb/pcihost_wrapper.c
   3 @@ -11,15 +11,17 @@
   4   * Licensed under the GNU/GPL. See COPYING for details.
   5   */
   6
   7 +#include <linux/pm.h>
   8  #include <linux/pci.h>
   9  #include <linux/export.h>
  10  #include <linux/slab.h>
  11  #include <linux/ssb/ssb.h>
  12
  13
  14 -#ifdef CONFIG_PM
  15 -static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state)
  16 +#ifdef CONFIG_PM_SLEEP
  17 +static int ssb_pcihost_suspend(struct device *d)
  18  {
  19 +       struct pci_dev *dev = to_pci_dev(d);
  20         struct ssb_bus *ssb = pci_get_drvdata(dev);
  21         int err;
  22
  23 @@ -28,17 +30,23 @@ static int ssb_pcihost_suspend(struct pc
  24                 return err;
  25         pci_save_state(dev);
  26         pci_disable_device(dev);
  27 -       pci_set_power_state(dev, pci_choose_state(dev, state));
  28 +
  29 +       /* if there is a wakeup enabled child device on ssb bus,
  30 +          enable pci wakeup posibility. */
  31 +       device_set_wakeup_enable(d, d->power.wakeup_path);
  32 +
  33 +       pci_prepare_to_sleep(dev);
  34
  35         return 0;
  36  }
  37
  38 -static int ssb_pcihost_resume(struct pci_dev *dev)
  39 +static int ssb_pcihost_resume(struct device *d)
  40  {
  41 +       struct pci_dev *dev = to_pci_dev(d);
  42         struct ssb_bus *ssb = pci_get_drvdata(dev);
  43         int err;
  44
  45 -       pci_set_power_state(dev, PCI_D0);
  46 +       pci_back_from_sleep(dev);
  47         err = pci_enable_device(dev);
  48         if (err)
  49                 return err;
  50 @@ -49,10 +57,12 @@ static int ssb_pcihost_resume(struct pci
  51
  52         return 0;
  53  }
  54 -#else /* CONFIG_PM */
  55 -# define ssb_pcihost_suspend   NULL
  56 -# define ssb_pcihost_resume    NULL
  57 -#endif /* CONFIG_PM */
  58 +
  59 +static const struct dev_pm_ops ssb_pcihost_pm_ops = {
  60 +       SET_SYSTEM_SLEEP_PM_OPS(ssb_pcihost_suspend, ssb_pcihost_resume)
  61 +};
  62 +
  63 +#endif /* CONFIG_PM_SLEEP */
  64
  65  static int ssb_pcihost_probe(struct pci_dev *dev,
  66                              const struct pci_device_id *id)
  67 @@ -115,8 +125,9 @@ int ssb_pcihost_register(struct pci_driv
  68  {
  69         driver->probe = ssb_pcihost_probe;
  70         driver->remove = ssb_pcihost_remove;
  71 -       driver->suspend = ssb_pcihost_suspend;
  72 -       driver->resume = ssb_pcihost_resume;
  73 +#ifdef CONFIG_PM_SLEEP
  74 +       driver->driver.pm = &ssb_pcihost_pm_ops;
  75 +#endif
  76
  77         return pci_register_driver(driver);
  78  }
  79 --- a/drivers/ssb/driver_pcicore.c
  80 +++ b/drivers/ssb/driver_pcicore.c
  81 @@ -357,6 +357,16 @@ static void ssb_pcicore_init_hostmode(st
  82         pcicore_write32(pc, SSB_PCICORE_SBTOPCI2,
  83                         SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA);
  84
  85 +       /*
  86 +        * Accessing PCI config without a proper delay after devices reset (not
  87 +        * GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
  88 +        * Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
  89 +        * completely. Flushing all writes was also tested but with no luck.
  90 +        * The same problem was reported for WRT350N v1 (BCM4705), so we just
  91 +        * sleep here unconditionally.
  92 +        */
  93 +       usleep_range(1000, 2000);
  94 +
  95         /* Enable PCI bridge BAR0 prefetch and burst */
  96         val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
  97         ssb_extpci_write_config(pc, 0, 0, 0, PCI_COMMAND, &val, 2);
  98 --- a/drivers/ssb/main.c
  99 +++ b/drivers/ssb/main.c
 100 @@ -90,25 +90,6 @@ found:
 101  }
 102  #endif /* CONFIG_SSB_PCMCIAHOST */
 103
 104 -#ifdef CONFIG_SSB_SDIOHOST
 105 -struct ssb_bus *ssb_sdio_func_to_bus(struct sdio_func *func)
 106 -{
 107 -       struct ssb_bus *bus;
 108 -
 109 -       ssb_buses_lock();
 110 -       list_for_each_entry(bus, &buses, list) {
 111 -               if (bus->bustype == SSB_BUSTYPE_SDIO &&
 112 -                   bus->host_sdio == func)
 113 -                       goto found;
 114 -       }
 115 -       bus = NULL;
 116 -found:
 117 -       ssb_buses_unlock();
 118 -
 119 -       return bus;
 120 -}
 121 -#endif /* CONFIG_SSB_SDIOHOST */
 122 -
 123  int ssb_for_each_bus_call(unsigned long data,
 124                           int (*func)(struct ssb_bus *bus, unsigned long data))
 125  {
 126 @@ -1154,6 +1135,8 @@ static u32 ssb_tmslow_reject_bitmask(str
 127         case SSB_IDLOW_SSBREV_25:     /* TODO - find the proper REJECT bit */
 128         case SSB_IDLOW_SSBREV_27:     /* same here */
 129                 return SSB_TMSLOW_REJECT;       /* this is a guess */
 130 +       case SSB_IDLOW_SSBREV:
 131 +               break;
 132         default:
 133                 WARN(1, KERN_INFO "ssb: Backplane Revision 0x%.8X\n", rev);
 134         }