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tifm_sd: add suspend and resume functionality

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Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Alex Dubov 2006-12-11 01:55:38 +11:00 • committed by Pierre Ossman
parent 41d78f7405
commit dba4accab1
1 changed files with 38 additions and 1 deletions
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39
drivers/mmc/tifm_sd.c
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@ -921,6 +921,41 @@ static void tifm_sd_remove(struct tifm_dev *sock)
mmc_free_host(mmc); 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[] = { static tifm_media_id tifm_sd_id_tbl[] = {
FM_SD, 0 FM_SD, 0
}; };
@ -932,7 +967,9 @@ static struct tifm_driver tifm_sd_driver = {
}, },
.id_table = tifm_sd_id_tbl, .id_table = tifm_sd_id_tbl,
.probe = tifm_sd_probe, .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) static int __init tifm_sd_init(void)