| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __LINUX_ATMEL_MCI_H |
| 3 | #define __LINUX_ATMEL_MCI_H |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | #include <linux/dmaengine.h> |
| 7 | |
| 8 | #define ATMCI_MAX_NR_SLOTS 2 |
| 9 | |
| 10 | /** |
| 11 | * struct mci_slot_pdata - board-specific per-slot configuration |
| 12 | * @bus_width: Number of data lines wired up the slot |
| 13 | * @detect_pin: GPIO pin wired to the card detect switch |
| 14 | * @wp_pin: GPIO pin wired to the write protect sensor |
| 15 | * @detect_is_active_high: The state of the detect pin when it is active |
| 16 | * @non_removable: The slot is not removable, only detect once |
| 17 | * |
| 18 | * If a given slot is not present on the board, @bus_width should be |
| 19 | * set to 0. The other fields are ignored in this case. |
| 20 | * |
| 21 | * Any pins that aren't available should be set to a negative value. |
| 22 | * |
| 23 | * Note that support for multiple slots is experimental -- some cards |
| 24 | * might get upset if we don't get the clock management exactly right. |
| 25 | * But in most cases, it should work just fine. |
| 26 | */ |
| 27 | struct mci_slot_pdata { |
| 28 | unsigned int bus_width; |
| 29 | int detect_pin; |
| 30 | int wp_pin; |
| 31 | bool detect_is_active_high; |
| 32 | bool non_removable; |
| 33 | }; |
| 34 | |
| 35 | /** |
| 36 | * struct mci_platform_data - board-specific MMC/SDcard configuration |
| 37 | * @dma_slave: DMA slave interface to use in data transfers. |
| 38 | * @slot: Per-slot configuration data. |
| 39 | */ |
| 40 | struct mci_platform_data { |
| 41 | void *dma_slave; |
| 42 | dma_filter_fn dma_filter; |
| 43 | struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS]; |
| 44 | }; |
| 45 | |
| 46 | #endif /* __LINUX_ATMEL_MCI_H */ |