gadget/function/f_midi2.c

2095 static ssize_t f_midi2_opts_uint_show(struct f_midi2_opts *opts,
2100 	mutex_lock(&opts->lock);
2102 	mutex_unlock(&opts->lock);
2106 static ssize_t f_midi2_opts_uint_store(struct f_midi2_opts *opts,
2113 	mutex_lock(&opts->lock);
2114 	if (opts->refcnt) {
2131 	mutex_unlock(&opts->lock);
2136 static ssize_t f_midi2_opts_bool_store(struct f_midi2_opts *opts,
2142 	mutex_lock(&opts->lock);
2143 	if (opts->refcnt) {
2155 	mutex_unlock(&opts->lock);
2160 static ssize_t f_midi2_opts_str_show(struct f_midi2_opts *opts,
2165 	mutex_lock(&opts->lock);
2168 	mutex_unlock(&opts->lock);
2172 static ssize_t f_midi2_opts_str_store(struct f_midi2_opts *opts,
2179 	mutex_lock(&opts->lock);
2180 	if (opts->refcnt) {
2197 	mutex_unlock(&opts->lock);
2210 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);	\
2211 	return f_midi2_opts_uint_show(opts->ep->opts, opts->info.name,	\
2218 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);	\
2219 	return f_midi2_opts_uint_store(opts->ep->opts, &opts->info.name,\
2230 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);	\
2231 	return f_midi2_opts_uint_show(opts->ep->opts, opts->info.name,	\
2238 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);	\
2239 	return f_midi2_opts_bool_store(opts->ep->opts, &opts->info.name,\
2259 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);
2261 	return f_midi2_opts_str_show(opts->ep->opts, opts->info.name, page);
2267 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);
2269 	return f_midi2_opts_str_store(opts->ep->opts, &opts->info.name, 128,
2292 	struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item);
2294 	kfree(opts->info.name);
2295 	kfree(opts);
2316 	mutex_lock(&ep_opts->opts->lock);
2317 	if (ep_opts->opts->refcnt || ep_opts->blks[blk]) {
2342 	mutex_unlock(&ep_opts->opts->lock);
2382 	mutex_lock(&block_opts->ep->opts->lock);
2384 	mutex_unlock(&block_opts->ep->opts->lock);
2397 	struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item);	\
2398 	return f_midi2_opts_uint_show(opts->opts, opts->info.name,	\
2405 	struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item);	\
2406 	return f_midi2_opts_uint_store(opts->opts, &opts->info.name,	\
2417 	struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item);	\
2418 	return f_midi2_opts_str_show(opts->opts, opts->info.name, page);\
2424 	struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item);	\
2425 	return f_midi2_opts_str_store(opts->opts, &opts->info.name, maxlen,\
2454 	struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item);
2456 	kfree(opts->info.ep_name);
2457 	kfree(opts->info.product_id);
2458 	kfree(opts);
2478 static int f_midi2_ep_opts_create(struct f_midi2_opts *opts,
2488 	ep_opts->opts = opts;
2495 	opts->eps[index] = ep_opts;
2504 	struct f_midi2_opts *opts;
2515 	opts = to_f_midi2_opts(&group->cg_item);
2518 	if (opts->eps[index])
2520 	ret = f_midi2_ep_opts_create(opts, index, &ep_opts);
2534 	mutex_lock(&ep_opts->opts->lock);
2535 	ep_opts->opts->eps[ep_opts->index] = NULL;
2536 	mutex_unlock(&ep_opts->opts->lock);
2549 	struct f_midi2_opts *opts = to_f_midi2_opts(item);		\
2550 	return f_midi2_opts_uint_show(opts, opts->info.name,		\
2557 	struct f_midi2_opts *opts = to_f_midi2_opts(item);		\
2558 	return f_midi2_opts_bool_store(opts, &opts->info.name,		\
2570 	struct f_midi2_opts *opts = to_f_midi2_opts(item);
2572 	return f_midi2_opts_str_show(opts, opts->info.iface_name, page);
2578 	struct f_midi2_opts *opts = to_f_midi2_opts(item);
2580 	return f_midi2_opts_str_store(opts, &opts->info.iface_name, 128,
2595 	struct f_midi2_opts *opts = to_f_midi2_opts(item);
2597 	usb_put_function_instance(&opts->func_inst);
2618 	struct f_midi2_opts *opts;
2620 	opts = container_of(f, struct f_midi2_opts, func_inst);
2622 	kfree(opts->info.iface_name);
2623 	kfree(opts);
2629 	struct f_midi2_opts *opts;
2634 	opts = kzalloc(sizeof(*opts), GFP_KERNEL);
2635 	if (!opts)
2638 	mutex_init(&opts->lock);
2639 	opts->func_inst.free_func_inst = f_midi2_free_inst;
2640 	opts->info.process_ump = true;
2641 	opts->info.static_block = true;
2642 	opts->info.num_reqs = 32;
2643 	opts->info.req_buf_size = 512;
2646 	ret = f_midi2_ep_opts_create(opts, 0, &ep_opts);
2648 		kfree(opts);
2656 		kfree(opts);
2663 	config_group_init_type_name(&opts->func_inst.group, "",
2668 	configfs_add_default_group(&ep_opts->group, &opts->func_inst.group);
2674 	return &opts->func_inst;
2677 static void do_f_midi2_free(struct f_midi2 *midi2, struct f_midi2_opts *opts)
2679 	mutex_lock(&opts->lock);
2680 	--opts->refcnt;
2681 	mutex_unlock(&opts->lock);
2695 static int verify_parameters(struct f_midi2_opts *opts)
2701 	for (num_eps = 0; num_eps < MAX_UMP_EPS && opts->eps[num_eps];
2711 		ep = &opts->eps[i]->info;
2718 		for (j = 0; j < SNDRV_UMP_MAX_BLOCKS && opts->eps[i]->blks[j];
2720 			bp = &opts->eps[i]->blks[j]->info;
2790 	struct f_midi2_opts *opts;
2799 	opts = container_of(fi, struct f_midi2_opts, func_inst);
2800 	mutex_lock(&opts->lock);
2801 	num_eps = verify_parameters(opts);
2803 		mutex_unlock(&opts->lock);
2807 	++opts->refcnt;
2808 	mutex_unlock(&opts->lock);
2821 	midi2->info = opts->info;
2826 		ep->info = opts->eps[i]->info;
2829 			     opts->eps[i]->blks[blk]; blk++) {
2832 			bp->info = opts->eps[i]->blks[blk]->info;
2840 		do_f_midi2_free(midi2, opts);
2844 	if (opts->info.iface_name && *opts->info.iface_name)
2845 		midi2->string_defs[STR_IFACE].s = opts->info.iface_name;
2862 		do_f_midi2_free(midi2, opts);