include/hw/display/i2c-ddc.h

   1 /* A simple I2C slave for returning monitor EDID data via DDC.
   2  *
   3  * Copyright (c) 2011 Linaro Limited
   4  * Written by Peter Maydell
   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 along
  16  *  with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef I2C_DDC_H
  20 #define I2C_DDC_H
  21
  22 #include "hw/display/edid.h"
  23 #include "hw/i2c/i2c.h"
  24 #include "qom/object.h"
  25
  26 /* A simple I2C slave which just returns the contents of its EDID blob. */
  27 struct I2CDDCState {
  28     /*< private >*/
  29     I2CSlave i2c;
  30     /*< public >*/
  31     bool firstbyte;
  32     uint8_t reg;
  33     qemu_edid_info edid_info;
  34     uint8_t edid_blob[128];
  35 };
  36
  37 typedef struct I2CDDCState I2CDDCState;
  38
  39 #define TYPE_I2CDDC "i2c-ddc"
  40 DECLARE_INSTANCE_CHECKER(I2CDDCState, I2CDDC,
  41                          TYPE_I2CDDC)
  42
  43 #endif /* I2C_DDC_H */