tifm_sd: add suspend and resume functionality
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c
index 2adfe34..ce19b04 100644
--- a/drivers/mmc/tifm_sd.c
+++ b/drivers/mmc/tifm_sd.c
@@ -921,6 +921,41 @@
mmc_free_host(mmc);
}
+#ifdef CONFIG_PM
+
+static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)
+{
+ struct mmc_host *mmc = tifm_get_drvdata(sock);
+ int rc;
+
+ rc = mmc_suspend_host(mmc, state);
+ /* The meaning of the bit majority in this constant is unknown. */
+ writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+ return rc;
+}
+
+static int tifm_sd_resume(struct tifm_dev *sock)
+{
+ struct mmc_host *mmc = tifm_get_drvdata(sock);
+ struct tifm_sd *host = mmc_priv(mmc);
+
+ if (sock->media_id != FM_SD
+ || tifm_sd_initialize_host(host)) {
+ tifm_eject(sock);
+ return 0;
+ } else {
+ return mmc_resume_host(mmc);
+ }
+}
+
+#else
+
+#define tifm_sd_suspend NULL
+#define tifm_sd_resume NULL
+
+#endif /* CONFIG_PM */
+
static tifm_media_id tifm_sd_id_tbl[] = {
FM_SD, 0
};
@@ -932,7 +967,9 @@
},
.id_table = tifm_sd_id_tbl,
.probe = tifm_sd_probe,
- .remove = tifm_sd_remove
+ .remove = tifm_sd_remove,
+ .suspend = tifm_sd_suspend,
+ .resume = tifm_sd_resume
};
static int __init tifm_sd_init(void)