>From 1667cd29afa90d041c0782223253835e6bc25b18 Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hun...@nokia.com>
Date: Mon, 26 Jan 2009 13:14:28 +0200
Subject: [PATCH] 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 <adrian.hun...@nokia.com>
---
arch/arm/mach-omap2/mmc-twl4030.c | 13 ++++++++++++-
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 736b039..a58deba 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.c
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -105,6 +105,14 @@ 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.
*/
@@ -427,7 +435,10 @@ 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 087a969..e87bc8d 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.h
+++ b/arch/arm/mach-omap2/mmc-twl4030.h
@@ -12,6 +12,7 @@ struct twl4030_hsmmc_info {
bool transceiver; /* MMC-2 option */
bool ext_clock; /* use external pin for input clock */
bool vsim_18v; /* MMC-2 option */
+ 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 */
--
1.5.6.3
--
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