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backend/drm: populate wlr_output.port

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This commit is contained in:
Simon Ser 2023-01-25 14:29:59 +01:00
parent 85ab6b7eb2
commit ade7fee5d2
5 changed files with 141 additions and 1 deletions
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41
backend/drm/util.c
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@ -270,3 +270,44 @@ void generate_cvt_mode(drmModeModeInfo *mode, int hdisplay, int vdisplay,
};
snprintf(mode->name, sizeof(mode->name), "%dx%d", hdisplay, vdisplay);
}
char *get_drm_bus_str(const drmDevice *dev) {
char buf[128];
switch (dev->bustype) {
case DRM_BUS_PCI:;
const drmPciBusInfo *pci = dev->businfo.pci;
snprintf(buf, sizeof(buf), "pci-%04" PRIx16 ":%02" PRIx8 ":%02" PRIx8 ".%" PRIu8,
pci->domain, pci->bus, pci->dev, pci->func);
return strdup(buf);
case DRM_BUS_PLATFORM:;
const drmPlatformBusInfo *platform = dev->businfo.platform;
size_t str_size = strlen("platform-") + strlen(platform->fullname) + 1;
char *str = malloc(str_size);
if (str == NULL) {
return NULL;
}
snprintf(str, str_size, "platform-%s", platform->fullname);
return str;
}
return NULL;
}
bool parse_dp_mst_path(const char *path, uint32_t *parent_conn_id, const char **child_path) {
const char prefix[] = "mst:";
if (strncmp(path, prefix, strlen(prefix)) != 0) {
return false;
}
path = &path[strlen(prefix)];
char *id_end;
errno = 0;
unsigned long id = strtoul(path, &id_end, 10);
if (errno != 0 || id_end[0] != '-' || id > UINT32_MAX) {
wlr_log(WLR_ERROR, "Malformed PATH DP-MST property: invalid parent connector ID");
return false;
}
*parent_conn_id = (uint32_t)id;
*child_path = &id_end[1];
return true;
}