diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/tifm_sd.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c index 2adfe3467019..ce19b045ca6a 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) |