mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
135 lines
3.7 KiB
Diff
135 lines
3.7 KiB
Diff
--- a/drivers/ssb/pcihost_wrapper.c
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+++ b/drivers/ssb/pcihost_wrapper.c
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@@ -11,15 +11,17 @@
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* Licensed under the GNU/GPL. See COPYING for details.
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*/
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+#include <linux/pm.h>
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#include <linux/pci.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/ssb/ssb.h>
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-#ifdef CONFIG_PM
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-static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state)
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+#ifdef CONFIG_PM_SLEEP
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+static int ssb_pcihost_suspend(struct device *d)
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{
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+ struct pci_dev *dev = to_pci_dev(d);
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struct ssb_bus *ssb = pci_get_drvdata(dev);
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int err;
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@@ -28,17 +30,23 @@ static int ssb_pcihost_suspend(struct pc
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return err;
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pci_save_state(dev);
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pci_disable_device(dev);
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- pci_set_power_state(dev, pci_choose_state(dev, state));
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+
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+ /* if there is a wakeup enabled child device on ssb bus,
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+ enable pci wakeup posibility. */
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+ device_set_wakeup_enable(d, d->power.wakeup_path);
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+
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+ pci_prepare_to_sleep(dev);
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return 0;
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}
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-static int ssb_pcihost_resume(struct pci_dev *dev)
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+static int ssb_pcihost_resume(struct device *d)
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{
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+ struct pci_dev *dev = to_pci_dev(d);
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struct ssb_bus *ssb = pci_get_drvdata(dev);
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int err;
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- pci_set_power_state(dev, PCI_D0);
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+ pci_back_from_sleep(dev);
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err = pci_enable_device(dev);
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if (err)
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return err;
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@@ -49,10 +57,12 @@ static int ssb_pcihost_resume(struct pci
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return 0;
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}
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-#else /* CONFIG_PM */
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-# define ssb_pcihost_suspend NULL
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-# define ssb_pcihost_resume NULL
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-#endif /* CONFIG_PM */
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+
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+static const struct dev_pm_ops ssb_pcihost_pm_ops = {
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+ SET_SYSTEM_SLEEP_PM_OPS(ssb_pcihost_suspend, ssb_pcihost_resume)
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+};
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+
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+#endif /* CONFIG_PM_SLEEP */
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static int ssb_pcihost_probe(struct pci_dev *dev,
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const struct pci_device_id *id)
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@@ -115,8 +125,9 @@ int ssb_pcihost_register(struct pci_driv
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{
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driver->probe = ssb_pcihost_probe;
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driver->remove = ssb_pcihost_remove;
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- driver->suspend = ssb_pcihost_suspend;
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- driver->resume = ssb_pcihost_resume;
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+#ifdef CONFIG_PM_SLEEP
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+ driver->driver.pm = &ssb_pcihost_pm_ops;
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+#endif
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return pci_register_driver(driver);
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}
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--- a/drivers/ssb/driver_pcicore.c
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+++ b/drivers/ssb/driver_pcicore.c
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@@ -357,6 +357,16 @@ static void ssb_pcicore_init_hostmode(st
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pcicore_write32(pc, SSB_PCICORE_SBTOPCI2,
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SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA);
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+ /*
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+ * Accessing PCI config without a proper delay after devices reset (not
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+ * GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
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+ * Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
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+ * completely. Flushing all writes was also tested but with no luck.
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+ * The same problem was reported for WRT350N v1 (BCM4705), so we just
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+ * sleep here unconditionally.
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+ */
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+ usleep_range(1000, 2000);
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+
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/* Enable PCI bridge BAR0 prefetch and burst */
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val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
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ssb_extpci_write_config(pc, 0, 0, 0, PCI_COMMAND, &val, 2);
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--- a/drivers/ssb/main.c
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+++ b/drivers/ssb/main.c
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@@ -90,25 +90,6 @@ found:
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}
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#endif /* CONFIG_SSB_PCMCIAHOST */
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-#ifdef CONFIG_SSB_SDIOHOST
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-struct ssb_bus *ssb_sdio_func_to_bus(struct sdio_func *func)
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-{
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- struct ssb_bus *bus;
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-
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- ssb_buses_lock();
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- list_for_each_entry(bus, &buses, list) {
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- if (bus->bustype == SSB_BUSTYPE_SDIO &&
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- bus->host_sdio == func)
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- goto found;
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- }
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- bus = NULL;
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-found:
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- ssb_buses_unlock();
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-
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- return bus;
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-}
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-#endif /* CONFIG_SSB_SDIOHOST */
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-
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int ssb_for_each_bus_call(unsigned long data,
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int (*func)(struct ssb_bus *bus, unsigned long data))
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{
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@@ -1154,6 +1135,8 @@ static u32 ssb_tmslow_reject_bitmask(str
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case SSB_IDLOW_SSBREV_25: /* TODO - find the proper REJECT bit */
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case SSB_IDLOW_SSBREV_27: /* same here */
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return SSB_TMSLOW_REJECT; /* this is a guess */
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+ case SSB_IDLOW_SSBREV:
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+ break;
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default:
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WARN(1, KERN_INFO "ssb: Backplane Revision 0x%.8X\n", rev);
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}
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