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backend/drm: make serial optional
The EDID 1.4 spec says that the serial number is optional: > If this field is not used, then enter “00h, 00h, 00h, 00h”. Leave the wlr_output.serial field NULL in that case, and hide it from the output description.
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parent
1b27d537d1
commit
1f96f388e9
2 changed files with 15 additions and 5 deletions
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@ -1343,9 +1343,13 @@ void scan_drm_connectors(struct wlr_drm_backend *drm,
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struct wlr_output *output = &wlr_conn->output;
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char description[128];
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snprintf(description, sizeof(description), "%s %s %s (%s%s%s)",
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output->make, output->model, output->serial, output->name,
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subconnector ? " via " : "", subconnector ? subconnector : "");
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snprintf(description, sizeof(description), "%s %s%s%s (%s%s%s)",
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output->make, output->model,
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output->serial ? " " : "",
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output->serial ? output->serial : "",
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output->name,
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subconnector ? " via " : "",
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subconnector ? subconnector : "");
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wlr_output_set_description(output, description);
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free(subconnector);
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@ -86,7 +86,11 @@ void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data)
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uint32_t serial = data[12] | (data[13] << 8) | (data[14] << 8) | (data[15] << 8);
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char serial_str[32];
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snprintf(serial_str, sizeof(serial_str), "0x%08" PRIX32, serial);
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if (serial != 0) {
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snprintf(serial_str, sizeof(serial_str), "0x%08" PRIX32, serial);
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} else {
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serial_str[0] = '\0';
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}
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for (size_t i = 72; i <= 108; i += 18) {
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uint16_t flag = (data[i] << 8) | data[i + 1];
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@ -112,7 +116,9 @@ void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data)
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}
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output->model = strdup(model_str);
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output->serial = strdup(serial_str);
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if (output->serial[0] != '\0') {
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output->serial = strdup(serial_str);
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}
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}
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const char *conn_get_name(uint32_t type_id) {
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