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/*
* Rudimentary drm setup dialog... this is currently a very basic stdio thingy.
*/
#include <assert.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "util.h"
static const char * encoder_type_name(uint32_t type) {
static const char *encoder_types[] = {
"None",
"DAC",
"TMDS",
"LVDAC",
"VIRTUAL",
"DSI"
};
assert(type < nelems(encoder_types));
return encoder_types[type];
}
static const char * connector_type_name(uint32_t type) {
static const char *connector_types[] = {
"Unknown",
"VGA",
"DVII",
"DVID",
"DVIA",
"Composite",
"SVIDEO",
"LVDS",
"Component",
"SPinDIN",
"DisplayPort",
"HDMIA",
"HDMIB",
"TV",
"eDP",
"VIRTUAL",
"DSI"
};
assert(type < nelems(connector_types));
return connector_types[type];
}
static const char * connection_type_name(int type) {
static const char *connection_types[] = {
[1] = "Connected",
"Disconnected",
"Unknown"
};
assert(type < nelems(connection_types));
return connection_types[type];
}
/* interactively setup the drm device, store the selections */
void drm_setup(int *res_drm_fd, uint32_t *res_crtc_id, uint32_t *res_connector_id, drmModeModeInfoPtr *res_mode)
{
int drm_fd, i, connected;
drmVersionPtr drm_ver;
drmModeResPtr drm_res;
drmModeConnectorPtr drm_con;
drmModeEncoderPtr drm_enc;
drmModeCrtcPtr drm_crtc;
char dev[256];
int connector_num, mode_num;
pexit_if(!drmAvailable(),
"drm unavailable");
ask_string(dev, sizeof(dev), "DRM device", "/dev/dri/card0");
pexit_if((drm_fd = open(dev, O_RDWR)) < 0,
"unable to open drm device \"%s\"", dev);
pexit_if(!(drm_ver = drmGetVersion(drm_fd)),
"unable to get drm version");
printf("\nVersion: %i.%i.%i\nName: \"%.*s\"\nDate: \"%.*s\"\nDescription: \"%.*s\"\n\n",
drm_ver->version_major,
drm_ver->version_minor,
drm_ver->version_patchlevel,
drm_ver->name_len,
drm_ver->name,
drm_ver->date_len,
drm_ver->date,
drm_ver->desc_len,
drm_ver->desc);
pexit_if(!(drm_res = drmModeGetResources(drm_fd)),
"unable to get drm resources");
printf("\nConnectors\n");
connected = 0;
for (i = 0; i < drm_res->count_connectors; i++) {
pexit_if(!(drm_con = drmModeGetConnector(drm_fd, drm_res->connectors[i])),
"unable to get connector %x", (int)drm_res->connectors[i]);
if (!drm_con->encoder_id) {
continue;
}
pexit_if(!(drm_enc = drmModeGetEncoder(drm_fd, drm_con->encoder_id)),
"unable to get encoder %x", (int)drm_con->encoder_id);
connected++;
printf(" %i: %s (%s%s%s)\n",
i, connector_type_name(drm_con->connector_type),
connection_type_name(drm_con->connection),
drm_con->encoder_id ? " via " : "",
drm_con->encoder_id ? encoder_type_name(drm_enc->encoder_type) : "");
/* TODO show mmWidth/mmHeight? */
}
exit_if(!connected,
"No connectors available, try different card or my bug?");
ask_num(&connector_num, drm_res->count_connectors, "Select connector", 0); // TODO default?
pexit_if(!(drm_con = drmModeGetConnector(drm_fd, drm_res->connectors[connector_num])),
"unable to get connector %x", (int)drm_res->connectors[connector_num]);
pexit_if(!(drm_enc = drmModeGetEncoder(drm_fd, drm_con->encoder_id)),
"unable to get encoder %x", (int)drm_con->encoder_id);
pexit_if(!(drm_crtc = drmModeGetCrtc(drm_fd, drm_enc->crtc_id)),
"unable to get crtc %x", (int)drm_enc->crtc_id);
*res_drm_fd = drm_fd;
*res_crtc_id = drm_crtc->crtc_id;
*res_connector_id = drm_con->connector_id;
printf("\nModes\n");
for (i = 0; i < drm_con->count_modes; i++) {
printf(" %i: %s @ %"PRIu32"Hz\n",
i, drm_con->modes[i].name,
drm_con->modes[i].vrefresh);
}
ask_num(&mode_num, drm_con->count_modes, "Select mode", 0); // TODO default to &drm_crtc->mode?
*res_mode = &drm_con->modes[mode_num];
}
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