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[ARM] pxamci: add simple gpio controls

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The MMC block needs 3 external datas to work :
 - is the MMC card put in "read-only mode" ?
 - is a MMC card inserted or removed ?
 - enable power towards the MMC card

Several platforms provide these controls through
gpios. Expand the platform_data to request and use these
gpios is set up by board code.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Pierre.Ossman <pierre@ossman.eu>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This commit is contained in:
Robert Jarzmik
2009-06-23 23:21:03 +02:00
committed by Eric Miao
parent 53eff4175f
commit b405db6c01
2 changed files with 85 additions and 1 deletions
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5
arch/arm/mach-pxa/include/mach/mmc.h
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@@ -14,6 +14,11 @@ struct pxamci_platform_data {
int (*get_ro)(struct device *);
void (*setpower)(struct device *, unsigned int);
void (*exit)(struct device *, void *);
int gpio_card_detect; /* gpio detecting card insertion */
int gpio_card_ro; /* gpio detecting read only toggle */
bool gpio_card_ro_invert; /* gpio ro is inverted */
int gpio_power; /* gpio powering up MMC bus */
bool gpio_power_invert; /* gpio power is inverted */
};
extern void pxa_set_mci_info(struct pxamci_platform_data *info);