diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_sdio.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/wl1271_sdio.c | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c index 4c250d7dc3fa..784ef3432641 100644 --- a/drivers/net/wireless/wl12xx/wl1271_sdio.c +++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c @@ -30,6 +30,7 @@ #include <linux/mmc/card.h> #include <linux/gpio.h> #include <linux/wl12xx.h> +#include <linux/pm_runtime.h> #include "wl1271.h" #include "wl12xx_80211.h" @@ -160,12 +161,19 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf, static int wl1271_sdio_power_on(struct wl1271 *wl) { struct sdio_func *func = wl_to_func(wl); + int ret; + + /* Power up the card */ + ret = pm_runtime_get_sync(&func->dev); + if (ret < 0) + goto out; sdio_claim_host(func); sdio_enable_func(func); sdio_release_host(func); - return 0; +out: + return ret; } static int wl1271_sdio_power_off(struct wl1271 *wl) @@ -176,15 +184,12 @@ static int wl1271_sdio_power_off(struct wl1271 *wl) sdio_disable_func(func); sdio_release_host(func); - return 0; + /* Power down the card */ + return pm_runtime_put_sync(&func->dev); } static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable) { - /* Let the SDIO stack handle wlan_enable control, so we - * keep host claimed while wlan is in use to keep wl1271 - * alive. - */ if (enable) return wl1271_sdio_power_on(wl); else @@ -256,6 +261,9 @@ static int __devinit wl1271_probe(struct sdio_func *func, sdio_set_drvdata(func, wl); + /* Tell PM core that we don't need the card to be powered now */ + pm_runtime_put_noidle(&func->dev); + wl1271_notice("initialized"); return 0; @@ -274,16 +282,39 @@ static void __devexit wl1271_remove(struct sdio_func *func) { struct wl1271 *wl = sdio_get_drvdata(func); + /* Undo decrement done above in wl1271_probe */ + pm_runtime_get_noresume(&func->dev); + wl1271_unregister_hw(wl); free_irq(wl->irq, wl); wl1271_free_hw(wl); } +static int wl1271_suspend(struct device *dev) +{ + /* Tell MMC/SDIO core it's OK to power down the card + * (if it isn't already), but not to remove it completely */ + return 0; +} + +static int wl1271_resume(struct device *dev) +{ + return 0; +} + +static const struct dev_pm_ops wl1271_sdio_pm_ops = { + .suspend = wl1271_suspend, + .resume = wl1271_resume, +}; + static struct sdio_driver wl1271_sdio_driver = { .name = "wl1271_sdio", .id_table = wl1271_devices, .probe = wl1271_probe, .remove = __devexit_p(wl1271_remove), + .drv = { + .pm = &wl1271_sdio_pm_ops, + }, }; static int __init wl1271_init(void) |