ath6kl: implement suspend support
For now this is implemented so that if host supports power is kept in
the chip. If that's not supported, an error is returned and sdio stack
will remove the device during suspend.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c
index f393090..852a0cc 100644
--- a/drivers/net/wireless/ath/ath6kl/sdio.c
+++ b/drivers/net/wireless/ath/ath6kl/sdio.c
@@ -726,6 +726,31 @@
return 0;
}
+static int ath6kl_sdio_suspend(struct ath6kl *ar)
+{
+ struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
+ struct sdio_func *func = ar_sdio->func;
+ mmc_pm_flag_t flags;
+ int ret;
+
+ flags = sdio_get_host_pm_caps(func);
+
+ if (!(flags & MMC_PM_KEEP_POWER))
+ /* as host doesn't support keep power we need to bail out */
+ return -EINVAL;
+
+ ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+ if (ret) {
+ printk(KERN_ERR "ath6kl: set sdio pm flags failed: %d\n",
+ ret);
+ return ret;
+ }
+
+ ath6kl_deep_sleep_enable(ar);
+
+ return 0;
+}
+
static const struct ath6kl_hif_ops ath6kl_sdio_ops = {
.read_write_sync = ath6kl_sdio_read_write_sync,
.write_async = ath6kl_sdio_write_async,
@@ -736,6 +761,7 @@
.enable_scatter = ath6kl_sdio_enable_scatter,
.scat_req_rw = ath6kl_sdio_async_rw_scatter,
.cleanup_scatter = ath6kl_sdio_cleanup_scatter,
+ .suspend = ath6kl_sdio_suspend,
};
static int ath6kl_sdio_probe(struct sdio_func *func,