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authorAdrian Hunter <adrian.hunter@nokia.com>2009-03-23 18:23:48 -0700
committerTony Lindgren <tony@atomide.com>2009-03-23 18:51:23 -0700
commit8d75e98b5880f8f02be68ddc3cc4e3d433630d7b (patch)
treea48b55f47c87767866661cc7026b57e07705f48f /arch/arm
parent034ae7b41720a26cadd4b2f02bf0b23e79240344 (diff)
ARM: OMAP3: mmc-twl4030 add cover switch
Allow a cover switch to be used to cause a rescan of the MMC slot. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-omap2/mmc-twl4030.c13
-rw-r--r--arch/arm/mach-omap2/mmc-twl4030.h1
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index d43421400e9..e2b2aeb713d 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.c
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -100,6 +100,14 @@ static int twl_mmc_get_ro(struct device *dev, int slot)
return gpio_get_value_cansleep(mmc->slots[0].gpio_wp);
}
+static int twl_mmc_get_cover_state(struct device *dev, int slot)
+{
+ struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+ /* NOTE: assumes card detect signal is active-low */
+ return !gpio_get_value_cansleep(mmc->slots[0].switch_pin);
+}
+
/*
* MMC Slot Initialization.
*/
@@ -411,7 +419,10 @@ void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers)
mmc->slots[0].switch_pin = c->gpio_cd;
mmc->slots[0].card_detect_irq = gpio_to_irq(c->gpio_cd);
- mmc->slots[0].card_detect = twl_mmc_card_detect;
+ if (c->cover_only)
+ mmc->slots[0].get_cover_state = twl_mmc_get_cover_state;
+ else
+ mmc->slots[0].card_detect = twl_mmc_card_detect;
} else
mmc->slots[0].switch_pin = -EINVAL;
diff --git a/arch/arm/mach-omap2/mmc-twl4030.h b/arch/arm/mach-omap2/mmc-twl4030.h
index 21d35727f92..0aa168690ed 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.h
+++ b/arch/arm/mach-omap2/mmc-twl4030.h
@@ -11,6 +11,7 @@ struct twl4030_hsmmc_info {
u8 wires; /* 1/4/8 wires */
bool transceiver; /* MMC-2 option */
bool ext_clock; /* use external pin for input clock */
+ bool cover_only; /* No card detect - just cover switch */
int gpio_cd; /* or -EINVAL */
int gpio_wp; /* or -EINVAL */
struct device *dev; /* returned: pointer to mmc adapter */