hw/display/edid-region.c

   1 #include "qemu/osdep.h"
   2 #include "hw/display/edid.h"
   3
   4 static uint64_t edid_region_read(void *ptr, hwaddr addr, unsigned size)
   5 {
   6     uint8_t *edid = ptr;
   7
   8     return edid[addr];
   9 }
  10
  11 static void edid_region_write(void *ptr, hwaddr addr,
  12                              uint64_t val, unsigned size)
  13 {
  14     /* read only */
  15 }
  16
  17 static const MemoryRegionOps edid_region_ops = {
  18     .read = edid_region_read,
  19     .write = edid_region_write,
  20     .valid.min_access_size = 1,
  21     .valid.max_access_size = 4,
  22     .impl.min_access_size = 1,
  23     .impl.max_access_size = 1,
  24     .endianness = DEVICE_LITTLE_ENDIAN,
  25 };
  26
  27 void qemu_edid_region_io(MemoryRegion *region, Object *owner,
  28                          uint8_t *edid, size_t size)
  29 {
  30     memory_region_init_io(region, owner, &edid_region_ops,
  31                           edid, "edid", size);
  32 }