"\t\t 0 == forbid\n"
"\t\t 1 == allow");
+static unsigned int supports_requests[VIVID_MAX_DEVS] = {
+ [0 ... (VIVID_MAX_DEVS - 1)] = 1
+};
+module_param_array(supports_requests, uint, NULL, 0444);
+MODULE_PARM_DESC(supports_requests, " support for requests, default is 1.\n"
+ "\t\t 0 == no support\n"
+ "\t\t 1 == supports requests\n"
+ "\t\t 2 == requires requests");
+
static struct vivid_dev *vivid_devs[VIVID_MAX_DEVS];
const struct v4l2_rect vivid_min_rect = {
q->mem_ops = allocators[dev->inst] == 1 ? &vb2_dma_contig_memops :
&vb2_vmalloc_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- q->min_buffers_needed = min_buffers_needed;
+ q->min_buffers_needed = supports_requests[dev->inst] ? 0 : min_buffers_needed;
q->lock = &dev->mutex;
q->dev = dev->v4l2_dev.dev;
- q->supports_requests = true;
+ q->supports_requests = supports_requests[dev->inst];
+ q->requires_requests = supports_requests[dev->inst] >= 2;
q->allow_cache_hints = (cache_hints[dev->inst] == 1);
return vb2_queue_init(q);