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 */ 44