drivers/gpu/drm/tegra/mipi-phy.h

   1 /*
   2  * Copyright (C) 2013 NVIDIA Corporation
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #ifndef DRM_TEGRA_MIPI_PHY_H
  24 #define DRM_TEGRA_MIPI_PHY_H
  25
  26 /*
  27  * D-PHY timing parameters
  28  *
  29  * A detailed description of these parameters can be found in the  MIPI
  30  * Alliance Specification for D-PHY, Section 5.9 "Global Operation Timing
  31  * Parameters".
  32  *
  33  * All parameters are specified in nanoseconds.
  34  */
  35 struct mipi_dphy_timing {
  36         unsigned int clkmiss;
  37         unsigned int clkpost;
  38         unsigned int clkpre;
  39         unsigned int clkprepare;
  40         unsigned int clksettle;
  41         unsigned int clktermen;
  42         unsigned int clktrail;
  43         unsigned int clkzero;
  44         unsigned int dtermen;
  45         unsigned int eot;
  46         unsigned int hsexit;
  47         unsigned int hsprepare;
  48         unsigned int hszero;
  49         unsigned int hssettle;
  50         unsigned int hsskip;
  51         unsigned int hstrail;
  52         unsigned int init;
  53         unsigned int lpx;
  54         unsigned int taget;
  55         unsigned int tago;
  56         unsigned int tasure;
  57         unsigned int wakeup;
  58 };
  59
  60 int mipi_dphy_timing_get_default(struct mipi_dphy_timing *timing,
  61                                  unsigned long period);
  62 int mipi_dphy_timing_validate(struct mipi_dphy_timing *timing,
  63                               unsigned long period);
  64
  65 #endif