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drm: Support drm-subtree drivers on FreeBSD

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The drm-kmod drivers use linuxkpi and end up with /dev/drm being the
canonical path for the devices, but the drm-subtree drivers use drmkpi
which has them appear under /dev/dri like Linux. Thus, adapt path_is_drm
to recognise both on FreeBSD.
This commit is contained in:
Jessica Clarke 2023-05-23 21:31:21 +01:00 • committed by Kenny Levinsen
parent 56720a6275
commit 1bd042e5b0
1 changed files with 11 additions and 7 deletions
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18
common/drm.c
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@ -10,7 +10,8 @@
#define DRM_IOCTL_SET_MASTER DRM_IO(0x1e) #define DRM_IOCTL_SET_MASTER DRM_IO(0x1e)
#define DRM_IOCTL_DROP_MASTER DRM_IO(0x1f) #define DRM_IOCTL_DROP_MASTER DRM_IO(0x1f)
#define STRLEN(s) ((sizeof(s) / sizeof(s[0])) - 1) #define STRLEN(s) ((sizeof(s) / sizeof(s[0])) - 1)
#define STR_HAS_PREFIX(prefix, s) (strncmp(prefix, s, STRLEN(prefix)) == 0)
int drm_set_master(int fd) { int drm_set_master(int fd) {
return ioctl(fd, DRM_IOCTL_SET_MASTER, 0); return ioctl(fd, DRM_IOCTL_SET_MASTER, 0);
@ -22,15 +23,18 @@ int drm_drop_master(int fd) {
#if defined(__linux__) || defined(__NetBSD__) #if defined(__linux__) || defined(__NetBSD__)
int path_is_drm(const char *path) { int path_is_drm(const char *path) {
static const char prefix[] = "/dev/dri/"; if (STR_HAS_PREFIX("/dev/dri/", path))
static const int prefixlen = STRLEN(prefix); return 1;
return strncmp(prefix, path, prefixlen) == 0; return 0;
} }
#elif defined(__FreeBSD__) #elif defined(__FreeBSD__)
int path_is_drm(const char *path) { int path_is_drm(const char *path) {
static const char prefix[] = "/dev/drm/"; if (STR_HAS_PREFIX("/dev/dri/", path))
static const int prefixlen = STRLEN(prefix); return 1;
return strncmp(prefix, path, prefixlen) == 0; /* Some drivers have /dev/dri/X symlinked to /dev/drm/X */
if (STR_HAS_PREFIX("/dev/drm/", path))
return 1;
return 0;
} }
#else #else
#error Unsupported platform #error Unsupported platform