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>
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@ -100,6 +100,14 @@ static int twl_mmc_get_ro(struct device *dev, int slot)
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return gpio_get_value_cansleep(mmc->slots[0].gpio_wp);
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}
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static int twl_mmc_get_cover_state(struct device *dev, int slot)
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{
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struct omap_mmc_platform_data *mmc = dev->platform_data;
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/* NOTE: assumes card detect signal is active-low */
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return !gpio_get_value_cansleep(mmc->slots[0].switch_pin);
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}
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/*
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* MMC Slot Initialization.
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*/
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@ -411,7 +419,10 @@ void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers)
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mmc->slots[0].switch_pin = c->gpio_cd;
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mmc->slots[0].card_detect_irq = gpio_to_irq(c->gpio_cd);
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mmc->slots[0].card_detect = twl_mmc_card_detect;
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if (c->cover_only)
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mmc->slots[0].get_cover_state = twl_mmc_get_cover_state;
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else
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mmc->slots[0].card_detect = twl_mmc_card_detect;
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} else
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mmc->slots[0].switch_pin = -EINVAL;
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@ -11,6 +11,7 @@ struct twl4030_hsmmc_info {
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u8 wires; /* 1/4/8 wires */
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bool transceiver; /* MMC-2 option */
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bool ext_clock; /* use external pin for input clock */
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bool cover_only; /* No card detect - just cover switch */
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int gpio_cd; /* or -EINVAL */
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int gpio_wp; /* or -EINVAL */
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struct device *dev; /* returned: pointer to mmc adapter */
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