include/media/blackfin/ppi.h

   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
  16 #ifndef _PPI_H_
  17 #define _PPI_H_
  18
  19 #include <linux/interrupt.h>
  20 #include <asm/blackfin.h>
  21 #include <asm/bfin_ppi.h>
  22
  23 /* EPPI */
  24 #ifdef EPPI_EN
  25 #define PORT_EN EPPI_EN
  26 #define PORT_DIR EPPI_DIR
  27 #define DMA32 0
  28 #define PACK_EN PACKEN
  29 #endif
  30
  31 /* EPPI3 */
  32 #ifdef EPPI0_CTL2
  33 #define PORT_EN EPPI_CTL_EN
  34 #define PORT_DIR EPPI_CTL_DIR
  35 #define PACK_EN EPPI_CTL_PACKEN
  36 #define DMA32 0
  37 #define DLEN_8 EPPI_CTL_DLEN08
  38 #define DLEN_16 EPPI_CTL_DLEN16
  39 #endif
  40
  41 struct ppi_if;
  42
  43 struct ppi_params {
  44         u32 width;              /* width in pixels */
  45         u32 height;             /* height in lines */
  46         u32 hdelay;             /* delay after the HSYNC in pixels */
  47         u32 vdelay;             /* delay after the VSYNC in lines */
  48         u32 line;               /* total pixels per line */
  49         u32 frame;              /* total lines per frame */
  50         u32 hsync;              /* HSYNC length in pixels */
  51         u32 vsync;              /* VSYNC length in lines */
  52         int bpp;                /* bits per pixel */
  53         int dlen;               /* data length for ppi in bits */
  54         u32 ppi_control;        /* ppi configuration */
  55         u32 int_mask;           /* interrupt mask */
  56 };
  57
  58 struct ppi_ops {
  59         int (*attach_irq)(struct ppi_if *ppi, irq_handler_t handler);
  60         void (*detach_irq)(struct ppi_if *ppi);
  61         int (*start)(struct ppi_if *ppi);
  62         int (*stop)(struct ppi_if *ppi);
  63         int (*set_params)(struct ppi_if *ppi, struct ppi_params *params);
  64         void (*update_addr)(struct ppi_if *ppi, unsigned long addr);
  65 };
  66
  67 enum ppi_type {
  68         PPI_TYPE_PPI,
  69         PPI_TYPE_EPPI,
  70         PPI_TYPE_EPPI3,
  71 };
  72
  73 struct ppi_info {
  74         enum ppi_type type;
  75         int dma_ch;
  76         int irq_err;
  77         void __iomem *base;
  78         const unsigned short *pin_req;
  79 };
  80
  81 struct ppi_if {
  82         struct device *dev;
  83         unsigned long ppi_control;
  84         const struct ppi_ops *ops;
  85         const struct ppi_info *info;
  86         bool err_int; /* if we need request error interrupt */
  87         bool err; /* if ppi has fifo error */
  88         void *priv;
  89 };
  90
  91 struct ppi_if *ppi_create_instance(struct platform_device *pdev,
  92                         const struct ppi_info *info);
  93 void ppi_delete_instance(struct ppi_if *ppi);
  94 #endif