From: Adrian Hunter Date: Mon, 26 Jan 2009 11:14:28 +0000 (+0200) Subject: OMAP: mmc-twl4030 add cover switch X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=ace01d9932a454bb989c98f2a860918884694f76;p=linux-2.6-omap-h63xx.git OMAP: 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 Acked-by: David Brownell Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c index aeaab5a8b9c..5957d1ca9ca 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. */ @@ -409,7 +417,10 @@ 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 */