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authorAlex Dubov <oakad@yahoo.com>2006-12-11 01:55:38 +1100
committerPierre Ossman <drzeus@drzeus.cx>2007-02-04 20:54:10 +0100
commitdba4accab17bd2e2e09088f746257a8c14af1cc2 (patch)
tree5a97d4f225de1e52042c92823536354118c69abe /drivers
parent41d78f7405659b55e082c5f0b3d1b625e75e1294 (diff)
tifm_sd: add suspend and resume functionality
Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/tifm_sd.c39
1 files changed, 38 insertions, 1 deletions
diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c
index 2adfe346701..ce19b045ca6 100644
--- a/drivers/mmc/tifm_sd.c
+++ b/drivers/mmc/tifm_sd.c
@@ -921,6 +921,41 @@ static void tifm_sd_remove(struct tifm_dev *sock)
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 @@ static struct tifm_driver tifm_sd_driver = {
},
.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)