android_kernel_xiaomi_sm8350/include/linux/atmel-mci.h
Jonas Larsson 1c1452be2e atmel-mci: Add support for inverted detect pin
Same patch as before, modified to use bool. Also adds description of
the new field in struct atmel_mci that I missed in the first patch.

This patch adds Atmel MCI support for inverted detect pins.

Signed-off-by: Jonas Larsson <jonas.larsson@martinsson.se>
Acked-by: Pierre Ossman <pierre@ossman.eu>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-04-08 20:47:48 +02:00

42 lines
1.2 KiB
C

#ifndef __LINUX_ATMEL_MCI_H
#define __LINUX_ATMEL_MCI_H
#define ATMEL_MCI_MAX_NR_SLOTS 2
#include <linux/dw_dmac.h>
/**
* struct mci_slot_pdata - board-specific per-slot configuration
* @bus_width: Number of data lines wired up the slot
* @detect_pin: GPIO pin wired to the card detect switch
* @wp_pin: GPIO pin wired to the write protect sensor
* @detect_is_active_high: The state of the detect pin when it is active
*
* If a given slot is not present on the board, @bus_width should be
* set to 0. The other fields are ignored in this case.
*
* Any pins that aren't available should be set to a negative value.
*
* Note that support for multiple slots is experimental -- some cards
* might get upset if we don't get the clock management exactly right.
* But in most cases, it should work just fine.
*/
struct mci_slot_pdata {
unsigned int bus_width;
int detect_pin;
int wp_pin;
bool detect_is_active_high;
};
/**
* struct mci_platform_data - board-specific MMC/SDcard configuration
* @dma_slave: DMA slave interface to use in data transfers.
* @slot: Per-slot configuration data.
*/
struct mci_platform_data {
struct dw_dma_slave dma_slave;
struct mci_slot_pdata slot[ATMEL_MCI_MAX_NR_SLOTS];
};
#endif /* __LINUX_ATMEL_MCI_H */