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TOMOYO Linux Cross Reference
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 #include <asm/blackfin.h>
 25 #include <asm/bfin_ppi.h>
 26 
 27 /* EPPI */
 28 #ifdef EPPI_EN
 29 #define PORT_EN EPPI_EN
 30 #define PORT_DIR EPPI_DIR
 31 #define DMA32 0
 32 #define PACK_EN PACKEN
 33 #endif
 34 
 35 /* EPPI3 */
 36 #ifdef EPPI0_CTL2
 37 #define PORT_EN EPPI_CTL_EN
 38 #define PORT_DIR EPPI_CTL_DIR
 39 #define PACK_EN EPPI_CTL_PACKEN
 40 #define DMA32 0
 41 #define DLEN_8 EPPI_CTL_DLEN08
 42 #define DLEN_16 EPPI_CTL_DLEN16
 43 #endif
 44 
 45 struct ppi_if;
 46 
 47 struct ppi_params {
 48         u32 width;              /* width in pixels */
 49         u32 height;             /* height in lines */
 50         u32 hdelay;             /* delay after the HSYNC in pixels */
 51         u32 vdelay;             /* delay after the VSYNC in lines */
 52         u32 line;               /* total pixels per line */
 53         u32 frame;              /* total lines per frame */
 54         u32 hsync;              /* HSYNC length in pixels */
 55         u32 vsync;              /* VSYNC length in lines */
 56         int bpp;                /* bits per pixel */
 57         int dlen;               /* data length for ppi in bits */
 58         u32 ppi_control;        /* ppi configuration */
 59         u32 int_mask;           /* interrupt mask */
 60 };
 61 
 62 struct ppi_ops {
 63         int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler);
 64         void (*detach_irq)(struct ppi_if *ppi);
 65         int (*start)(struct ppi_if *ppi);
 66         int (*stop)(struct ppi_if *ppi);
 67         int (*set_params)(struct ppi_if *ppi, struct ppi_params *params);
 68         void (*update_addr)(struct ppi_if *ppi, unsigned long addr);
 69 };
 70 
 71 enum ppi_type {
 72         PPI_TYPE_PPI,
 73         PPI_TYPE_EPPI,
 74         PPI_TYPE_EPPI3,
 75 };
 76 
 77 struct ppi_info {
 78         enum ppi_type type;
 79         int dma_ch;
 80         int irq_err;
 81         void __iomem *base;
 82         const unsigned short *pin_req;
 83 };
 84 
 85 struct ppi_if {
 86         struct device *dev;
 87         unsigned long ppi_control;
 88         const struct ppi_ops *ops;
 89         const struct ppi_info *info;
 90         bool err_int; /* if we need request error interrupt */
 91         bool err; /* if ppi has fifo error */
 92         void *priv;
 93 };
 94 
 95 struct ppi_if *ppi_create_instance(struct platform_device *pdev,
 96                         const struct ppi_info *info);
 97 void ppi_delete_instance(struct ppi_if *ppi);
 98 #endif
 99 

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