summaryrefslogtreecommitdiffstats
path: root/drivers/memstick/host
diff options
context:
space:
mode:
authorAlex Dubov <oakad@yahoo.com>2008-03-10 11:43:40 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-03-10 18:01:18 -0700
commiteebbe9ca7855eb520cde62234028b6bd90083659 (patch)
tree5fc1e82eb2d2f6b76ca41ac19f5bbe2180d56c98 /drivers/memstick/host
parent92b22d935fed1e4d88b9b6f9a674ab2a4272ee78 (diff)
downloadop-kernel-dev-eebbe9ca7855eb520cde62234028b6bd90083659.zip
op-kernel-dev-eebbe9ca7855eb520cde62234028b6bd90083659.tar.gz
tifm: fix memorystick host initialization code
Instead of assuming that host is powered on only once at card insertion, allow for the possibility that memstick layer may need to cycle card's power to get it out from some unhealthy states. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/memstick/host')
-rw-r--r--drivers/memstick/host/tifm_ms.c40
1 files changed, 15 insertions, 25 deletions
diff --git a/drivers/memstick/host/tifm_ms.c b/drivers/memstick/host/tifm_ms.c
index b88f5b3..2b5bf52 100644
--- a/drivers/memstick/host/tifm_ms.c
+++ b/drivers/memstick/host/tifm_ms.c
@@ -496,7 +496,18 @@ static void tifm_ms_set_param(struct memstick_host *msh,
switch (param) {
case MEMSTICK_POWER:
- /* this is set by card detection mechanism */
+ /* also affected by media detection mechanism */
+ if (value == MEMSTICK_POWER_ON) {
+ host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
+ writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
+ writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
+ sock->addr + SOCK_MS_SYSTEM);
+ writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
+ } else if (value == MEMSTICK_POWER_OFF) {
+ writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
+ sock->addr + SOCK_MS_SYSTEM);
+ writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
+ }
break;
case MEMSTICK_INTERFACE:
if (value == MEMSTICK_SERIAL) {
@@ -531,22 +542,6 @@ static void tifm_ms_abort(unsigned long data)
tifm_eject(host->dev);
}
-static int tifm_ms_initialize_host(struct tifm_ms *host)
-{
- struct tifm_dev *sock = host->dev;
- struct memstick_host *msh = tifm_get_drvdata(sock);
-
- host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
- writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
- writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
- sock->addr + SOCK_MS_SYSTEM);
- writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
- if (tifm_has_ms_pif(sock))
- msh->caps |= MEMSTICK_CAP_PAR4;
-
- return 0;
-}
-
static int tifm_ms_probe(struct tifm_dev *sock)
{
struct memstick_host *msh;
@@ -575,10 +570,10 @@ static int tifm_ms_probe(struct tifm_dev *sock)
msh->set_param = tifm_ms_set_param;
sock->card_event = tifm_ms_card_event;
sock->data_event = tifm_ms_data_event;
- rc = tifm_ms_initialize_host(host);
+ if (tifm_has_ms_pif(sock))
+ msh->caps |= MEMSTICK_CAP_PAR4;
- if (!rc)
- rc = memstick_add_host(msh);
+ rc = memstick_add_host(msh);
if (!rc)
return 0;
@@ -616,11 +611,6 @@ static void tifm_ms_remove(struct tifm_dev *sock)
spin_unlock_irqrestore(&sock->lock, flags);
memstick_remove_host(msh);
-
- writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
- sock->addr + SOCK_MS_SYSTEM);
- writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
-
memstick_free_host(msh);
}
OpenPOWER on IntegriCloud