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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <inttypes.h>
#include <sys/ioctl.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "drmtools.h"
/* ------------------------------------------------------------------ */
static const char *conn_type[] = {
[ DRM_MODE_CONNECTOR_Unknown ] = "Unknown",
[ DRM_MODE_CONNECTOR_VGA ] = "VGA",
[ DRM_MODE_CONNECTOR_DVII ] = "DVII",
[ DRM_MODE_CONNECTOR_DVID ] = "DVID",
[ DRM_MODE_CONNECTOR_DVIA ] = "DVIA",
[ DRM_MODE_CONNECTOR_Composite ] = "Composite",
[ DRM_MODE_CONNECTOR_SVIDEO ] = "SVIDEO",
[ DRM_MODE_CONNECTOR_LVDS ] = "LVDS",
[ DRM_MODE_CONNECTOR_Component ] = "Component",
[ DRM_MODE_CONNECTOR_9PinDIN ] = "9PinDIN",
[ DRM_MODE_CONNECTOR_DisplayPort ] = "DisplayPort",
[ DRM_MODE_CONNECTOR_HDMIA ] = "HDMIA",
[ DRM_MODE_CONNECTOR_HDMIB ] = "HDMIB",
[ DRM_MODE_CONNECTOR_TV ] = "TV",
[ DRM_MODE_CONNECTOR_eDP ] = "eDP",
[ DRM_MODE_CONNECTOR_VIRTUAL ] = "VIRTUAL",
[ DRM_MODE_CONNECTOR_DSI ] = "DSI",
};
static const char *conn_mode[] = {
[ DRM_MODE_CONNECTED ] = "connected",
[ DRM_MODE_DISCONNECTED ] = "disconnected",
[ DRM_MODE_UNKNOWNCONNECTION ] = "unknown",
};
static const char *enc_type[] = {
[ DRM_MODE_ENCODER_NONE ] = "NONE",
[ DRM_MODE_ENCODER_DAC ] = "DAC",
[ DRM_MODE_ENCODER_TMDS ] = "TMDS",
[ DRM_MODE_ENCODER_LVDS ] = "LVDS",
[ DRM_MODE_ENCODER_TVDAC ] = "TVDAC",
[ DRM_MODE_ENCODER_VIRTUAL ] = "VIRTUAL",
[ DRM_MODE_ENCODER_DSI ] = "DSI",
};
static const char *enum2name(const char *names[], int len, int nr)
{
if (nr >= len)
return "???";
if (!names[nr])
return "???";
return names[nr];
}
/* ------------------------------------------------------------------ */
const char *drm_connector_type_name(int nr)
{
return enum2name(conn_type, sizeof(conn_type)/sizeof(conn_type[0]), nr);
}
const char *drm_connector_mode_name(int nr)
{
return enum2name(conn_mode, sizeof(conn_mode)/sizeof(conn_mode[0]), nr);
}
const char *drm_encoder_type_name(int nr)
{
return enum2name(enc_type, sizeof(enc_type)/sizeof(enc_type[0]), nr);
}
void drm_conn_name(drmModeConnector *conn, char *dest, int dlen)
{
const char *type;
if (conn->connector_type_id < sizeof(conn_type)/sizeof(conn_type[0]) &&
conn_type[conn->connector_type]) {
type = conn_type[conn->connector_type];
} else {
type = "unknown";
}
snprintf(dest, dlen, "%s-%d", type, conn->connector_type_id);
}
/* ------------------------------------------------------------------ */
bool drm_probe_format(int fd, uint32_t bpp, uint32_t depth, uint32_t fourcc, bool print)
{
struct drm_mode_create_dumb cd;
struct drm_mode_destroy_dumb dd;
uint32_t zero = 0;
uint32_t fb_id = 0;
bool result = false;
int rc;
/* create dumb buffer */
memset(&cd, 0, sizeof(cd));
cd.width = 64;
cd.height = 64;
cd.bpp = bpp;
rc = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &cd);
if (rc < 0)
goto done;
/* create framebuffer */
if (fourcc) {
rc = drmModeAddFB2(fd, cd.width, cd.height, fourcc,
&cd.handle, &cd.pitch, &zero,
&fb_id, 0);
if (rc == 0 && print)
printf(" bpp %d, fourcc %c%c%c%c\n", cd.bpp,
(fourcc >> 0) & 0xff,
(fourcc >> 8) & 0xff,
(fourcc >> 16) & 0xff,
(fourcc >> 24) & 0xff);
} else if (depth) {
rc = drmModeAddFB(fd, cd.width, cd.height, depth, cd.bpp,
cd.pitch, cd.handle, &fb_id);
if (rc == 0 && print)
printf(" bpp %d, depth %d\n", cd.bpp, depth);
} else {
rc = -1;
}
if (rc == 0) {
/* worked, yay! */
result = true;
drmModeRmFB(fd, fb_id);
}
dd.handle = cd.handle;
drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &dd);
done:
return result;
}
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