diff options
| author | Adrian Hunter <adrian.hunter@nokia.com> | 2009-03-23 18:23:48 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2009-03-23 18:51:23 -0700 |
| commit | 8d75e98b5880f8f02be68ddc3cc4e3d433630d7b (patch) | |
| tree | a48b55f47c87767866661cc7026b57e07705f48f | |
| parent | 034ae7b41720a26cadd4b2f02bf0b23e79240344 (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>
| -rw-r--r-- | arch/arm/mach-omap2/mmc-twl4030.c | 13 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/mmc-twl4030.h | 1 |
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 */ |