drivers/video/via/via-core.h

   1 /*
   2  * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
   4  * Copyright 2009 Jonathan Corbet <corbet@lwn.net>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public
   8  * License as published by the Free Software Foundation;
   9  * either version 2, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
  13  * the implied warranty of MERCHANTABILITY or FITNESS FOR
  14  * A PARTICULAR PURPOSE.See the GNU General Public License
  15  * for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc.,
  20  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef __VIA_CORE_H__
  24 #define __VIA_CORE_H__
  25 #include <linux/spinlock.h>
  26 #include <linux/pci.h>
  27
  28 /*
  29  * A description of each known serial I2C/GPIO port.
  30  */
  31 enum via_port_type {
  32         VIA_PORT_NONE = 0,
  33         VIA_PORT_I2C,
  34         VIA_PORT_GPIO,
  35 };
  36
  37 enum via_port_mode {
  38         VIA_MODE_OFF = 0,
  39         VIA_MODE_I2C,           /* Used as I2C port */
  40         VIA_MODE_GPIO,  /* Two GPIO ports */
  41 };
  42
  43 enum viafb_i2c_adap {
  44         VIA_PORT_26 = 0,
  45         VIA_PORT_31,
  46         VIA_PORT_25,
  47         VIA_PORT_2C,
  48         VIA_PORT_3D,
  49 };
  50 #define VIAFB_NUM_PORTS 5
  51
  52 struct via_port_cfg {
  53         enum via_port_type      type;
  54         enum via_port_mode      mode;
  55         u16                     io_port;
  56         u8                      ioport_index;
  57 };
  58
  59 /*
  60  * This is the global viafb "device" containing stuff needed by
  61  * all subdevs.
  62  */
  63 struct viafb_dev {
  64         struct pci_dev *pdev;
  65         int chip_type;
  66         /*
  67          * Spinlock for access to device registers.  Not yet
  68          * globally used.
  69          */
  70         spinlock_t reg_lock;
  71         /*
  72          * The framebuffer MMIO region.  Little, if anything, touches
  73          * this memory directly, and certainly nothing outside of the
  74          * framebuffer device itself.  We *do* have to be able to allocate
  75          * chunks of this memory for other devices, though.
  76          */
  77         unsigned long fbmem_start;
  78         long fbmem_len;
  79         void __iomem *fbmem;
  80         /*
  81          * The MMIO region for device registers.
  82          */
  83         unsigned long engine_start;
  84         unsigned long engine_len;
  85         void __iomem *engine_mmio;
  86
  87 };
  88
  89 #endif /* __VIA_CORE_H__ */