On 12/04/2012 05:13 PM, Thierry Reding wrote:
+int drm_tegra_open(const char *path, struct drm_tegra **devicep)
+{
+ struct drm_tegra *device;
+ int err;
+
+ if (!path || !devicep)
+ return -EINVAL;
+
+ device = calloc(1, sizeof(*device));
+ if (!device)
+ return -ENOMEM;
+
+ DRMINITLISTHEAD(&device->bo_list);
+
+ device->fd = open(path, O_RDWR);
+ if (device->fd < 0) {
+ err = -errno;
+ free(device);
+ return err;
+ }
+
+ *devicep = device;
+
+ return 0;
+}
I think you shouldn't ask the path from the application (=DDX) here, but
use drmOpen() that automatically finds the correct device for you.
I'd also prefer letting the application open and close the device and
modify drm_tegra_open() to take the fd as a parameter. That way the DDX
could easily access also all generic libdrm functions.
- Arto
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