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  * 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