Scott Jiang | 63b1a90 | 2012-03-08 17:44:17 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Analog Devices PPI header file |
| 3 | * |
| 4 | * Copyright (c) 2011 Analog Devices Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | */ |
| 19 | |
| 20 | #ifndef _PPI_H_ |
| 21 | #define _PPI_H_ |
| 22 | |
| 23 | #include <linux/interrupt.h> |
| 24 | |
| 25 | #ifdef EPPI_EN |
| 26 | #define PORT_EN EPPI_EN |
| 27 | #define DMA32 0 |
| 28 | #define PACK_EN PACKEN |
| 29 | #endif |
| 30 | |
| 31 | struct ppi_if; |
| 32 | |
| 33 | struct ppi_params { |
| 34 | int width; |
| 35 | int height; |
| 36 | int bpp; |
| 37 | unsigned long ppi_control; |
| 38 | u32 int_mask; |
| 39 | int blank_clocks; |
| 40 | }; |
| 41 | |
| 42 | struct ppi_ops { |
| 43 | int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler); |
| 44 | void (*detach_irq)(struct ppi_if *ppi); |
| 45 | int (*start)(struct ppi_if *ppi); |
| 46 | int (*stop)(struct ppi_if *ppi); |
| 47 | int (*set_params)(struct ppi_if *ppi, struct ppi_params *params); |
| 48 | void (*update_addr)(struct ppi_if *ppi, unsigned long addr); |
| 49 | }; |
| 50 | |
| 51 | enum ppi_type { |
| 52 | PPI_TYPE_PPI, |
| 53 | PPI_TYPE_EPPI, |
| 54 | }; |
| 55 | |
| 56 | struct ppi_info { |
| 57 | enum ppi_type type; |
| 58 | int dma_ch; |
| 59 | int irq_err; |
| 60 | void __iomem *base; |
| 61 | const unsigned short *pin_req; |
| 62 | }; |
| 63 | |
| 64 | struct ppi_if { |
| 65 | unsigned long ppi_control; |
| 66 | const struct ppi_ops *ops; |
| 67 | const struct ppi_info *info; |
| 68 | bool err_int; |
| 69 | void *priv; |
| 70 | }; |
| 71 | |
| 72 | struct ppi_if *ppi_create_instance(const struct ppi_info *info); |
| 73 | void ppi_delete_instance(struct ppi_if *ppi); |
| 74 | #endif |