diff options
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/pcie_bus.c | 69 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/pm.c | 98 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/wil6210.h | 5 |
4 files changed, 173 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/Makefile b/drivers/net/wireless/ath/wil6210/Makefile index 050506f842e9..64b432625fbb 100644 --- a/drivers/net/wireless/ath/wil6210/Makefile +++ b/drivers/net/wireless/ath/wil6210/Makefile @@ -12,6 +12,7 @@ wil6210-y += debug.o wil6210-y += rx_reorder.o wil6210-y += ioctl.o wil6210-y += fw.o +wil6210-y += pm.o wil6210-y += pmc.o wil6210-$(CONFIG_WIL6210_TRACING) += trace.o wil6210-y += wil_platform.o diff --git a/drivers/net/wireless/ath/wil6210/pcie_bus.c b/drivers/net/wireless/ath/wil6210/pcie_bus.c index c37838dfe38a..feff1ef10fb3 100644 --- a/drivers/net/wireless/ath/wil6210/pcie_bus.c +++ b/drivers/net/wireless/ath/wil6210/pcie_bus.c @@ -259,11 +259,80 @@ static const struct pci_device_id wil6210_pcie_ids[] = { }; MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids); +#ifdef CONFIG_PM + +static int wil6210_suspend(struct device *dev, bool is_runtime) +{ + int rc = 0; + struct pci_dev *pdev = to_pci_dev(dev); + struct wil6210_priv *wil = pci_get_drvdata(pdev); + + wil_dbg_pm(wil, "%s(%s)\n", __func__, + is_runtime ? "runtime" : "system"); + + rc = wil_can_suspend(wil, is_runtime); + if (rc) + goto out; + + rc = wil_suspend(wil, is_runtime); + if (rc) + goto out; + + /* TODO: how do I bring card in low power state? */ + + /* disable bus mastering */ + pci_clear_master(pdev); + /* PCI will call pci_save_state(pdev) and pci_prepare_to_sleep(pdev) */ + +out: + return rc; +} + +static int wil6210_resume(struct device *dev, bool is_runtime) +{ + int rc = 0; + struct pci_dev *pdev = to_pci_dev(dev); + struct wil6210_priv *wil = pci_get_drvdata(pdev); + + wil_dbg_pm(wil, "%s(%s)\n", __func__, + is_runtime ? "runtime" : "system"); + + /* allow master */ + pci_set_master(pdev); + + rc = wil_resume(wil, is_runtime); + if (rc) + pci_clear_master(pdev); + + return rc; +} + +#ifdef CONFIG_PM_SLEEP +static int wil6210_pm_suspend(struct device *dev) +{ + return wil6210_suspend(dev, false); +} + +static int wil6210_pm_resume(struct device *dev) +{ + return wil6210_resume(dev, false); +} +#endif /* CONFIG_PM_SLEEP */ + +#endif /* CONFIG_PM */ + +static const struct dev_pm_ops wil6210_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(wil6210_pm_suspend, wil6210_pm_resume) +}; + static struct pci_driver wil6210_driver = { .probe = wil_pcie_probe, .remove = wil_pcie_remove, .id_table = wil6210_pcie_ids, .name = WIL_NAME, + .driver = { + .pm = &wil6210_pm_ops, + }, }; static int __init wil6210_driver_init(void) diff --git a/drivers/net/wireless/ath/wil6210/pm.c b/drivers/net/wireless/ath/wil6210/pm.c new file mode 100644 index 000000000000..0b7ecbcac19c --- /dev/null +++ b/drivers/net/wireless/ath/wil6210/pm.c @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2014 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "wil6210.h" + +int wil_can_suspend(struct wil6210_priv *wil, bool is_runtime) +{ + int rc = 0; + struct wireless_dev *wdev = wil->wdev; + + wil_dbg_pm(wil, "%s(%s)\n", __func__, + is_runtime ? "runtime" : "system"); + + switch (wdev->iftype) { + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: + break; + /* AP-like interface - can't suspend */ + default: + wil_dbg_pm(wil, "AP-like interface\n"); + rc = -EBUSY; + break; + } + + wil_dbg_pm(wil, "%s(%s) => %s (%d)\n", __func__, + is_runtime ? "runtime" : "system", rc ? "No" : "Yes", rc); + + return rc; +} + +int wil_suspend(struct wil6210_priv *wil, bool is_runtime) +{ + int rc = 0; + struct net_device *ndev = wil_to_ndev(wil); + + wil_dbg_pm(wil, "%s(%s)\n", __func__, + is_runtime ? "runtime" : "system"); + + /* if netif up, hardware is alive, shut it down */ + if (ndev->flags & IFF_UP) { + rc = wil_down(wil); + if (rc) { + wil_err(wil, "wil_down : %d\n", rc); + goto out; + } + } + + if (wil->platform_ops.suspend) + rc = wil->platform_ops.suspend(wil->platform_handle); + +out: + wil_dbg_pm(wil, "%s(%s) => %d\n", __func__, + is_runtime ? "runtime" : "system", rc); + return rc; +} + +int wil_resume(struct wil6210_priv *wil, bool is_runtime) +{ + int rc = 0; + struct net_device *ndev = wil_to_ndev(wil); + + wil_dbg_pm(wil, "%s(%s)\n", __func__, + is_runtime ? "runtime" : "system"); + + if (wil->platform_ops.resume) { + rc = wil->platform_ops.resume(wil->platform_handle); + if (rc) { + wil_err(wil, "platform_ops.resume : %d\n", rc); + goto out; + } + } + + /* if netif up, bring hardware up + * During open(), IFF_UP set after actual device method + * invocation. This prevent recursive call to wil_up() + */ + if (ndev->flags & IFF_UP) + rc = wil_up(wil); + +out: + wil_dbg_pm(wil, "%s(%s) => %d\n", __func__, + is_runtime ? "runtime" : "system", rc); + return rc; +} diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index c6b0fa26c403..dd4ea926b8e3 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -647,6 +647,7 @@ void wil_info(struct wil6210_priv *wil, const char *fmt, ...); #define wil_dbg_txrx(wil, fmt, arg...) wil_dbg(wil, "DBG[TXRX]" fmt, ##arg) #define wil_dbg_wmi(wil, fmt, arg...) wil_dbg(wil, "DBG[ WMI]" fmt, ##arg) #define wil_dbg_misc(wil, fmt, arg...) wil_dbg(wil, "DBG[MISC]" fmt, ##arg) +#define wil_dbg_pm(wil, fmt, arg...) wil_dbg(wil, "DBG[ PM ]" fmt, ##arg) /* target operations */ /* register read */ @@ -815,4 +816,8 @@ int wil_iftype_nl2wmi(enum nl80211_iftype type); int wil_ioctl(struct wil6210_priv *wil, void __user *data, int cmd); int wil_request_firmware(struct wil6210_priv *wil, const char *name); +int wil_can_suspend(struct wil6210_priv *wil, bool is_runtime); +int wil_suspend(struct wil6210_priv *wil, bool is_runtime); +int wil_resume(struct wil6210_priv *wil, bool is_runtime); + #endif /* __WIL6210_H__ */ |