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Linux/include/media/blackfin/ppi.h

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  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
 75 

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