diff options
| -rw-r--r-- | drmsetup.c | 147 | ||||
| -rw-r--r-- | drmsetup.h | 10 |
2 files changed, 157 insertions, 0 deletions
diff --git a/drmsetup.c b/drmsetup.c new file mode 100644 index 0000000..3ed435a --- /dev/null +++ b/drmsetup.c @@ -0,0 +1,147 @@ +/* + * 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; + drmVersionPtr drm_ver; + drmModeResPtr drm_res; + drmModeConnectorPtr drm_con; + drmModeEncoderPtr drm_enc; + drmModeCrtcPtr drm_crtc; + char dev[256]; + int connector_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); + + exit_if(!(drm_res = drmModeGetResources(drm_fd)), + "unable to get drm resources"); + + for (i = 0; i < drm_res->count_connectors; i++) { + + exit_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; + } + + exit_if(!(drm_enc = drmModeGetEncoder(drm_fd, drm_con->encoder_id)), + "unable to get encoder %x", (int)drm_con->encoder_id); + + printf("%i: Connector [%x]: %s [%s%s%s]\n", + i, (int)drm_res->connectors[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? */ + } + ask_num(&connector_num, drm_res->count_connectors, "Connector", 0); // TODO default? + + exit_if(!(drm_con = drmModeGetConnector(drm_fd, drm_res->connectors[connector_num])), + "unable to get connector %x", (int)drm_res->connectors[connector_num]); + exit_if(!(drm_enc = drmModeGetEncoder(drm_fd, drm_con->encoder_id)), + "unable to get encoder %x", (int)drm_con->encoder_id); + + exit_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; + *res_mode = &drm_crtc->mode; +} diff --git a/drmsetup.h b/drmsetup.h new file mode 100644 index 0000000..61af2d5 --- /dev/null +++ b/drmsetup.h @@ -0,0 +1,10 @@ +#ifndef _DRM_SETUP_H +#define _DRM_SETUP_H + +#include <stddef.h> /* xf86drmMode.h uses size_t without including stddef.h, sigh */ +#include <stdint.h> +#include <xf86drmMode.h> + +void drm_setup(int *res_drm_fd, uint32_t *res_crtc_id, uint32_t *res_connector_id, drmModeModeInfoPtr *res_mode); + +#endif |