diff options
| -rw-r--r-- | src/egl/main/egldisplay.c | 2 | ||||
| -rw-r--r-- | src/egl/main/egldriver.c | 60 |
2 files changed, 54 insertions, 8 deletions
diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c index b2d30d4274..8fd29b8421 100644 --- a/src/egl/main/egldisplay.c +++ b/src/egl/main/egldisplay.c @@ -35,7 +35,7 @@ _eglNewDisplay(NativeDisplayType nativeDisplay) dpy->Xdpy = (Display *) nativeDisplay; #endif - dpy->DriverName = _eglstrdup(_eglChooseDriver(dpy)); + dpy->DriverName = _eglChooseDriver(dpy); if (!dpy->DriverName) { free(dpy); return NULL; diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c index 599077190a..b58222e48e 100644 --- a/src/egl/main/egldriver.c +++ b/src/egl/main/egldriver.c @@ -28,6 +28,44 @@ #endif const char *DefaultDriverName = ":0"; +const char *SysFS = "/sys/class"; + + + + +/** + * Given a card number, use sysfs to determine the DRI driver name. + */ +static const char * +_eglChooseDRMDriver(int card) +{ +#if 0 + return _eglstrdup("libEGLdri"); +#else + char path[2000], driverName[2000]; + FILE *f; + int length; + + snprintf(path, sizeof(path), "%s/drm/card%d/dri_library_name", SysFS, card); + + f = fopen(path, "r"); + if (!f) + return NULL; + + fgets(driverName, sizeof(driverName), f); + fclose(f); + + if ((length = strlen(driverName)) > 1) { + /* remove the trailing newline from sysfs */ + driverName[length - 1] = '\0'; + strncat(driverName, "_dri", sizeof(driverName)); + return _eglstrdup(driverName); + } + else { + return NULL; + } +#endif +} /** @@ -41,7 +79,9 @@ const char *DefaultDriverName = ":0"; * Else if the first character is '!' we interpret it as specific driver name * (i.e. "!r200" or "!i830". * - * The caller should make a copy of the returned string. + * Whatever follows ':' is copied and put into dpy->DriverArgs. + * + * The caller may free() the returned string. */ const char * _eglChooseDriver(_EGLDisplay *dpy) @@ -62,20 +102,26 @@ _eglChooseDriver(_EGLDisplay *dpy) dpy->DriverArgs = _eglstrdup(args + 1); } - + /* determine driver name now */ if (displayString && displayString[0] == ':' && (displayString[1] >= '0' && displayString[1] <= '9') && !displayString[2]) { - /* XXX probe hardware here to determine which driver to open */ - driverName = "libEGLdri"; + int card = atoi(displayString + 1); + driverName = _eglChooseDRMDriver(card); } else if (displayString && displayString[0] == '!') { - /* use specified driver name */ - driverName = displayString + 1; + /* use user-specified driver name */ + driverName = _eglstrdup(displayString + 1); + /* truncate driverName at ':' if present */ + { + char *args = strchr(driverName, ':'); + if (args) { + *args = 0; + } + } } else { /* NativeDisplay is not a string! */ - #if defined(_EGL_PLATFORM_X) driverName = _xeglChooseDriver(dpy); #elif defined(_EGL_PLATFORM_WINDOWS) |