desc[7] = 30;
desc[8] = 160;
- /* max dot clock (1200 MHz) */
- desc[9] = 1200 / 10;
+ /* max dot clock (2550 MHz) */
+ desc[9] = 2550 / 10;
/* no extended timing information */
desc[10] = 0x01;
return res * 254 / 10 / dpi;
}
+static void init_displayid(uint8_t *did)
+{
+ did[0] = 0x70; /* display id extension */
+ did[1] = 0x13; /* version 1.3 */
+ did[2] = 4; /* length */
+ did[3] = 0x03; /* product type (0x03 == standalone display device) */
+ edid_checksum(did + 1, did[2] + 4);
+}
+
+static void qemu_displayid_generate(uint8_t *did, uint32_t refresh_rate,
+ uint32_t xres, uint32_t yres,
+ uint32_t xmm, uint32_t ymm)
+{
+ Timings timings;
+ generate_timings(&timings, refresh_rate, xres, yres);
+
+ did[0] = 0x70; /* display id extension */
+ did[1] = 0x13; /* version 1.3 */
+ did[2] = 23; /* length */
+ did[3] = 0x03; /* product type (0x03 == standalone display device) */
+
+ did[5] = 0x03; /* Detailed Timings Data Block */
+ did[6] = 0x00; /* revision */
+ did[7] = 0x14; /* block length */
+
+ did[8] = timings.clock & 0xff;
+ did[9] = (timings.clock & 0xff00) >> 8;
+ did[10] = (timings.clock & 0xff0000) >> 16;
+
+ did[11] = 0x88; /* leave aspect ratio undefined */
+
+ stw_le_p(did + 12, 0xffff & (xres - 1));
+ stw_le_p(did + 14, 0xffff & (timings.xblank - 1));
+ stw_le_p(did + 16, 0xffff & (timings.xfront - 1));
+ stw_le_p(did + 18, 0xffff & (timings.xsync - 1));
+
+ stw_le_p(did + 20, 0xffff & (yres - 1));
+ stw_le_p(did + 22, 0xffff & (timings.yblank - 1));
+ stw_le_p(did + 24, 0xffff & (timings.yfront - 1));
+ stw_le_p(did + 26, 0xffff & (timings.ysync - 1));
+
+ edid_checksum(did + 1, did[2] + 4);
+}
+
void qemu_edid_generate(uint8_t *edid, size_t size,
qemu_edid_info *info)
{
uint8_t *desc = edid + 54;
uint8_t *xtra3 = NULL;
uint8_t *dta = NULL;
+ uint8_t *did = NULL;
uint32_t width_mm, height_mm;
uint32_t refresh_rate = info->refresh_rate ? info->refresh_rate : 75000;
uint32_t dpi = 100; /* if no width_mm/height_mm */
+ uint32_t large_screen = 0;
/* =============== set defaults =============== */
if (!info->prefy) {
info->prefy = 768;
}
+ if (info->prefx >= 4096 || info->prefy >= 4096) {
+ large_screen = 1;
+ }
if (info->width_mm && info->height_mm) {
width_mm = info->width_mm;
height_mm = info->height_mm;
edid_ext_dta(dta);
}
+ if (size >= 384 && large_screen) {
+ did = edid + 256;
+ edid[126]++;
+ init_displayid(did);
+ }
+
/* =============== header information =============== */
/* fixed */
/* =============== descriptor blocks =============== */
- edid_desc_timing(desc, refresh_rate, info->prefx, info->prefy,
- width_mm, height_mm);
- desc = edid_desc_next(edid, dta, desc);
+ if (!large_screen) {
+ /* The DTD section has only 12 bits to store the resolution */
+ edid_desc_timing(desc, refresh_rate, info->prefx, info->prefy,
+ width_mm, height_mm);
+ desc = edid_desc_next(edid, dta, desc);
+ }
xtra3 = desc;
edid_desc_xtra3_std(xtra3);
desc = edid_desc_next(edid, dta, desc);
}
+ /* =============== display id extensions =============== */
+
+ if (did && large_screen) {
+ qemu_displayid_generate(did, refresh_rate, info->prefx, info->prefy,
+ width_mm, height_mm);
+ }
+
/* =============== finish up =============== */
edid_checksum(edid, 127);
if (dta) {
edid_checksum(dta, 127);
}
+ if (did) {
+ edid_checksum(did, 127);
+ }
}
size_t qemu_edid_size(uint8_t *edid)