75 static void lirc_irctl_init(struct irctl *ir)  in lirc_irctl_init()  argument
77 	mutex_init(&ir->irctl_lock);  in lirc_irctl_init()
78 	ir->d.minor = NOPLUG;  in lirc_irctl_init()
81 static void lirc_irctl_cleanup(struct irctl *ir)  in lirc_irctl_cleanup()  argument
83 	dev_dbg(ir->d.dev, LOGHEAD "cleaning up\n", ir->d.name, ir->d.minor);  in lirc_irctl_cleanup()
85 	device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));  in lirc_irctl_cleanup()
87 	if (ir->buf != ir->d.rbuf) {  in lirc_irctl_cleanup()
88 		lirc_buffer_free(ir->buf);  in lirc_irctl_cleanup()
89 		kfree(ir->buf);  in lirc_irctl_cleanup()
91 	ir->buf = NULL;  in lirc_irctl_cleanup()
98 static int lirc_add_to_buf(struct irctl *ir)  in lirc_add_to_buf()  argument
100 	if (ir->d.add_to_buf) {  in lirc_add_to_buf()
109 		res = ir->d.add_to_buf(ir->d.data, ir->buf);  in lirc_add_to_buf()
116 			kthread_stop(ir->task);  in lirc_add_to_buf()
128 	struct irctl *ir = irctl;  in lirc_thread()  local
130 	dev_dbg(ir->d.dev, LOGHEAD "poll thread started\n",  in lirc_thread()
131 		ir->d.name, ir->d.minor);  in lirc_thread()
134 		if (ir->open) {  in lirc_thread()
135 			if (ir->jiffies_to_wait) {  in lirc_thread()
137 				schedule_timeout(ir->jiffies_to_wait);  in lirc_thread()
141 			if (!lirc_add_to_buf(ir))  in lirc_thread()
142 				wake_up_interruptible(&ir->buf->wait_poll);  in lirc_thread()
149 	dev_dbg(ir->d.dev, LOGHEAD "poll thread ended\n",  in lirc_thread()
150 		ir->d.name, ir->d.minor);  in lirc_thread()
170 static int lirc_cdev_add(struct irctl *ir)  in lirc_cdev_add()  argument
173 	struct lirc_driver *d = &ir->d;  in lirc_cdev_add()
197 	ir->cdev = cdev;  in lirc_cdev_add()
208 	struct irctl *ir;  in lirc_register_driver()  local
298 	ir = kzalloc(sizeof(struct irctl), GFP_KERNEL);  in lirc_register_driver()
299 	if (!ir) {  in lirc_register_driver()
303 	lirc_irctl_init(ir);  in lirc_register_driver()
304 	irctls[minor] = ir;  in lirc_register_driver()
308 		ir->jiffies_to_wait = HZ / d->sample_rate;  in lirc_register_driver()
311 		ir->jiffies_to_wait = 0;  in lirc_register_driver()
323 		ir->buf = d->rbuf;  in lirc_register_driver()
325 		ir->buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);  in lirc_register_driver()
326 		if (!ir->buf) {  in lirc_register_driver()
330 		err = lirc_buffer_init(ir->buf, chunk_size, buffer_size);  in lirc_register_driver()
332 			kfree(ir->buf);  in lirc_register_driver()
336 	ir->chunk_size = ir->buf->chunk_size;  in lirc_register_driver()
341 	ir->d = *d;  in lirc_register_driver()
343 	device_create(lirc_class, ir->d.dev,  in lirc_register_driver()
344 		      MKDEV(MAJOR(lirc_base_dev), ir->d.minor), NULL,  in lirc_register_driver()
345 		      "lirc%u", ir->d.minor);  in lirc_register_driver()
349 		ir->task = kthread_run(lirc_thread, (void *)ir, "lirc_dev");  in lirc_register_driver()
350 		if (IS_ERR(ir->task)) {  in lirc_register_driver()
359 	err = lirc_cdev_add(ir);  in lirc_register_driver()
363 	ir->attached = 1;  in lirc_register_driver()
366 	dev_info(ir->d.dev, "lirc_dev: driver %s registered at minor = %d\n",  in lirc_register_driver()
367 		 ir->d.name, ir->d.minor);  in lirc_register_driver()
371 	device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));  in lirc_register_driver()
381 	struct irctl *ir;  in lirc_unregister_driver()  local
390 	ir = irctls[minor];  in lirc_unregister_driver()
391 	if (!ir) {  in lirc_unregister_driver()
397 	cdev = ir->cdev;  in lirc_unregister_driver()
401 	if (ir->d.minor != minor) {  in lirc_unregister_driver()
409 	if (ir->task)  in lirc_unregister_driver()
410 		kthread_stop(ir->task);  in lirc_unregister_driver()
412 	dev_dbg(ir->d.dev, "lirc_dev: driver %s unregistered from minor = %d\n",  in lirc_unregister_driver()
413 		ir->d.name, ir->d.minor);  in lirc_unregister_driver()
415 	ir->attached = 0;  in lirc_unregister_driver()
416 	if (ir->open) {  in lirc_unregister_driver()
417 		dev_dbg(ir->d.dev, LOGHEAD "releasing opened driver\n",  in lirc_unregister_driver()
418 			ir->d.name, ir->d.minor);  in lirc_unregister_driver()
419 		wake_up_interruptible(&ir->buf->wait_poll);  in lirc_unregister_driver()
420 		mutex_lock(&ir->irctl_lock);  in lirc_unregister_driver()
421 		ir->d.set_use_dec(ir->d.data);  in lirc_unregister_driver()
423 		mutex_unlock(&ir->irctl_lock);  in lirc_unregister_driver()
425 		lirc_irctl_cleanup(ir);  in lirc_unregister_driver()
428 		kfree(ir);  in lirc_unregister_driver()
440 	struct irctl *ir;  in lirc_dev_fop_open()  local
453 	ir = irctls[iminor(inode)];  in lirc_dev_fop_open()
454 	if (!ir) {  in lirc_dev_fop_open()
459 	dev_dbg(ir->d.dev, LOGHEAD "open called\n", ir->d.name, ir->d.minor);  in lirc_dev_fop_open()
461 	if (ir->d.minor == NOPLUG) {  in lirc_dev_fop_open()
466 	if (ir->open) {  in lirc_dev_fop_open()
471 	if (ir->d.rdev) {  in lirc_dev_fop_open()
472 		retval = rc_open(ir->d.rdev);  in lirc_dev_fop_open()
477 	cdev = ir->cdev;  in lirc_dev_fop_open()
479 		ir->open++;  in lirc_dev_fop_open()
480 		retval = ir->d.set_use_inc(ir->d.data);  in lirc_dev_fop_open()
484 			ir->open--;  in lirc_dev_fop_open()
486 			lirc_buffer_clear(ir->buf);  in lirc_dev_fop_open()
488 		if (ir->task)  in lirc_dev_fop_open()
489 			wake_up_process(ir->task);  in lirc_dev_fop_open()
493 	if (ir)  in lirc_dev_fop_open()
494 		dev_dbg(ir->d.dev, LOGHEAD "open result = %d\n",  in lirc_dev_fop_open()
495 			ir->d.name, ir->d.minor, retval);  in lirc_dev_fop_open()
507 	struct irctl *ir = irctls[iminor(inode)];  in lirc_dev_fop_close()  local
510 	if (!ir) {  in lirc_dev_fop_close()
515 	cdev = ir->cdev;  in lirc_dev_fop_close()
517 	dev_dbg(ir->d.dev, LOGHEAD "close called\n", ir->d.name, ir->d.minor);  in lirc_dev_fop_close()
521 	rc_close(ir->d.rdev);  in lirc_dev_fop_close()
523 	ir->open--;  in lirc_dev_fop_close()
524 	if (ir->attached) {  in lirc_dev_fop_close()
525 		ir->d.set_use_dec(ir->d.data);  in lirc_dev_fop_close()
528 		lirc_irctl_cleanup(ir);  in lirc_dev_fop_close()
530 		irctls[ir->d.minor] = NULL;  in lirc_dev_fop_close()
532 		kfree(ir);  in lirc_dev_fop_close()
543 	struct irctl *ir = irctls[iminor(file_inode(file))];  in lirc_dev_fop_poll()  local
546 	if (!ir) {  in lirc_dev_fop_poll()
551 	dev_dbg(ir->d.dev, LOGHEAD "poll called\n", ir->d.name, ir->d.minor);  in lirc_dev_fop_poll()
553 	if (!ir->attached)  in lirc_dev_fop_poll()
556 	if (ir->buf) {  in lirc_dev_fop_poll()
557 		poll_wait(file, &ir->buf->wait_poll, wait);  in lirc_dev_fop_poll()
559 		if (lirc_buffer_empty(ir->buf))  in lirc_dev_fop_poll()
566 	dev_dbg(ir->d.dev, LOGHEAD "poll result = %d\n",  in lirc_dev_fop_poll()
567 		ir->d.name, ir->d.minor, ret);  in lirc_dev_fop_poll()
577 	struct irctl *ir = irctls[iminor(file_inode(file))];  in lirc_dev_fop_ioctl()  local
579 	if (!ir) {  in lirc_dev_fop_ioctl()
584 	dev_dbg(ir->d.dev, LOGHEAD "ioctl called (0x%x)\n",  in lirc_dev_fop_ioctl()
585 		ir->d.name, ir->d.minor, cmd);  in lirc_dev_fop_ioctl()
587 	if (ir->d.minor == NOPLUG || !ir->attached) {  in lirc_dev_fop_ioctl()
588 		dev_dbg(ir->d.dev, LOGHEAD "ioctl result = -ENODEV\n",  in lirc_dev_fop_ioctl()
589 			ir->d.name, ir->d.minor);  in lirc_dev_fop_ioctl()
593 	mutex_lock(&ir->irctl_lock);  in lirc_dev_fop_ioctl()
597 		result = put_user(ir->d.features, (__u32 __user *)arg);  in lirc_dev_fop_ioctl()
600 		if (!(ir->d.features & LIRC_CAN_REC_MASK)) {  in lirc_dev_fop_ioctl()
606 				  (ir->d.features & LIRC_CAN_REC_MASK),  in lirc_dev_fop_ioctl()
610 		if (!(ir->d.features & LIRC_CAN_REC_MASK)) {  in lirc_dev_fop_ioctl()
616 		if (!result && !(LIRC_MODE2REC(mode) & ir->d.features))  in lirc_dev_fop_ioctl()
624 		result = put_user(ir->d.code_length, (__u32 __user *)arg);  in lirc_dev_fop_ioctl()
627 		if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||  in lirc_dev_fop_ioctl()
628 		    ir->d.min_timeout == 0) {  in lirc_dev_fop_ioctl()
633 		result = put_user(ir->d.min_timeout, (__u32 __user *)arg);  in lirc_dev_fop_ioctl()
636 		if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||  in lirc_dev_fop_ioctl()
637 		    ir->d.max_timeout == 0) {  in lirc_dev_fop_ioctl()
642 		result = put_user(ir->d.max_timeout, (__u32 __user *)arg);  in lirc_dev_fop_ioctl()
648 	dev_dbg(ir->d.dev, LOGHEAD "ioctl result = %d\n",  in lirc_dev_fop_ioctl()
649 		ir->d.name, ir->d.minor, result);  in lirc_dev_fop_ioctl()
651 	mutex_unlock(&ir->irctl_lock);  in lirc_dev_fop_ioctl()
662 	struct irctl *ir = irctls[iminor(file_inode(file))];  in lirc_dev_fop_read()  local
667 	if (!ir) {  in lirc_dev_fop_read()
672 	dev_dbg(ir->d.dev, LOGHEAD "read called\n", ir->d.name, ir->d.minor);  in lirc_dev_fop_read()
674 	buf = kzalloc(ir->chunk_size, GFP_KERNEL);  in lirc_dev_fop_read()
678 	if (mutex_lock_interruptible(&ir->irctl_lock)) {  in lirc_dev_fop_read()
682 	if (!ir->attached) {  in lirc_dev_fop_read()
687 	if (length % ir->chunk_size) {  in lirc_dev_fop_read()
697 	add_wait_queue(&ir->buf->wait_poll, &wait);  in lirc_dev_fop_read()
705 		if (lirc_buffer_empty(ir->buf)) {  in lirc_dev_fop_read()
721 			mutex_unlock(&ir->irctl_lock);  in lirc_dev_fop_read()
725 			if (mutex_lock_interruptible(&ir->irctl_lock)) {  in lirc_dev_fop_read()
727 				remove_wait_queue(&ir->buf->wait_poll, &wait);  in lirc_dev_fop_read()
732 			if (!ir->attached) {  in lirc_dev_fop_read()
737 			lirc_buffer_read(ir->buf, buf);  in lirc_dev_fop_read()
739 					   ir->buf->chunk_size);  in lirc_dev_fop_read()
741 				written += ir->buf->chunk_size;  in lirc_dev_fop_read()
747 	remove_wait_queue(&ir->buf->wait_poll, &wait);  in lirc_dev_fop_read()
751 	mutex_unlock(&ir->irctl_lock);  in lirc_dev_fop_read()
755 	dev_dbg(ir->d.dev, LOGHEAD "read result = %s (%d)\n",  in lirc_dev_fop_read()
756 		ir->d.name, ir->d.minor, ret ? "<fail>" : "<ok>", ret);  in lirc_dev_fop_read()
772 	struct irctl *ir = irctls[iminor(file_inode(file))];  in lirc_dev_fop_write()  local
774 	if (!ir) {  in lirc_dev_fop_write()
779 	dev_dbg(ir->d.dev, LOGHEAD "write called\n", ir->d.name, ir->d.minor);  in lirc_dev_fop_write()
781 	if (!ir->attached)  in lirc_dev_fop_write()