99 spidev_sync(struct spidev_data *spidev, struct spi_message *message)  in spidev_sync()  argument
105 	spin_lock_irq(&spidev->spi_lock);  in spidev_sync()
106 	spi = spidev->spi;  in spidev_sync()
107 	spin_unlock_irq(&spidev->spi_lock);  in spidev_sync()
121 spidev_sync_write(struct spidev_data *spidev, size_t len)  in spidev_sync_write()  argument
124 			.tx_buf		= spidev->tx_buffer,  in spidev_sync_write()
126 			.speed_hz	= spidev->speed_hz,  in spidev_sync_write()
132 	return spidev_sync(spidev, &m);  in spidev_sync_write()
136 spidev_sync_read(struct spidev_data *spidev, size_t len)  in spidev_sync_read()  argument
139 			.rx_buf		= spidev->rx_buffer,  in spidev_sync_read()
141 			.speed_hz	= spidev->speed_hz,  in spidev_sync_read()
147 	return spidev_sync(spidev, &m);  in spidev_sync_read()
156 	struct spidev_data	*spidev;  in spidev_read()  local
163 	spidev = filp->private_data;  in spidev_read()
165 	mutex_lock(&spidev->buf_lock);  in spidev_read()
166 	status = spidev_sync_read(spidev, count);  in spidev_read()
170 		missing = copy_to_user(buf, spidev->rx_buffer, status);  in spidev_read()
176 	mutex_unlock(&spidev->buf_lock);  in spidev_read()
186 	struct spidev_data	*spidev;  in spidev_write()  local
194 	spidev = filp->private_data;  in spidev_write()
196 	mutex_lock(&spidev->buf_lock);  in spidev_write()
197 	missing = copy_from_user(spidev->tx_buffer, buf, count);  in spidev_write()
199 		status = spidev_sync_write(spidev, count);  in spidev_write()
202 	mutex_unlock(&spidev->buf_lock);  in spidev_write()
207 static int spidev_message(struct spidev_data *spidev,  in spidev_message()  argument
227 	tx_buf = spidev->tx_buffer;  in spidev_message()
228 	rx_buf = spidev->rx_buffer;  in spidev_message()
284 			k_tmp->speed_hz = spidev->speed_hz;  in spidev_message()
286 		dev_dbg(&spidev->spi->dev,  in spidev_message()
292 			u_tmp->bits_per_word ? : spidev->spi->bits_per_word,  in spidev_message()
294 			u_tmp->speed_hz ? : spidev->spi->max_speed_hz);  in spidev_message()
299 	status = spidev_sync(spidev, &msg);  in spidev_message()
304 	rx_buf = spidev->rx_buffer;  in spidev_message()
359 	struct spidev_data	*spidev;  in spidev_ioctl()  local
385 	spidev = filp->private_data;  in spidev_ioctl()
386 	spin_lock_irq(&spidev->spi_lock);  in spidev_ioctl()
387 	spi = spi_dev_get(spidev->spi);  in spidev_ioctl()
388 	spin_unlock_irq(&spidev->spi_lock);  in spidev_ioctl()
399 	mutex_lock(&spidev->buf_lock);  in spidev_ioctl()
419 		retval = __put_user(spidev->speed_hz, (__u32 __user *)arg);  in spidev_ioctl()
484 				spidev->speed_hz = tmp;  in spidev_ioctl()
504 		retval = spidev_message(spidev, ioc, n_ioc);  in spidev_ioctl()
509 	mutex_unlock(&spidev->buf_lock);  in spidev_ioctl()
521 	struct spidev_data		*spidev;  in spidev_compat_ioc_message()  local
533 	spidev = filp->private_data;  in spidev_compat_ioc_message()
534 	spin_lock_irq(&spidev->spi_lock);  in spidev_compat_ioc_message()
535 	spi = spi_dev_get(spidev->spi);  in spidev_compat_ioc_message()
536 	spin_unlock_irq(&spidev->spi_lock);  in spidev_compat_ioc_message()
542 	mutex_lock(&spidev->buf_lock);  in spidev_compat_ioc_message()
560 	retval = spidev_message(spidev, ioc, n_ioc);  in spidev_compat_ioc_message()
564 	mutex_unlock(&spidev->buf_lock);  in spidev_compat_ioc_message()
585 	struct spidev_data	*spidev;  in spidev_open()  local
590 	list_for_each_entry(spidev, &device_list, device_entry) {  in spidev_open()
591 		if (spidev->devt == inode->i_rdev) {  in spidev_open()
602 	if (!spidev->tx_buffer) {  in spidev_open()
603 		spidev->tx_buffer = kmalloc(bufsiz, GFP_KERNEL);  in spidev_open()
604 		if (!spidev->tx_buffer) {  in spidev_open()
605 			dev_dbg(&spidev->spi->dev, "open/ENOMEM\n");  in spidev_open()
611 	if (!spidev->rx_buffer) {  in spidev_open()
612 		spidev->rx_buffer = kmalloc(bufsiz, GFP_KERNEL);  in spidev_open()
613 		if (!spidev->rx_buffer) {  in spidev_open()
614 			dev_dbg(&spidev->spi->dev, "open/ENOMEM\n");  in spidev_open()
620 	spidev->users++;  in spidev_open()
621 	filp->private_data = spidev;  in spidev_open()
628 	kfree(spidev->tx_buffer);  in spidev_open()
629 	spidev->tx_buffer = NULL;  in spidev_open()
637 	struct spidev_data	*spidev;  in spidev_release()  local
640 	spidev = filp->private_data;  in spidev_release()
644 	spidev->users--;  in spidev_release()
645 	if (!spidev->users) {  in spidev_release()
648 		kfree(spidev->tx_buffer);  in spidev_release()
649 		spidev->tx_buffer = NULL;  in spidev_release()
651 		kfree(spidev->rx_buffer);  in spidev_release()
652 		spidev->rx_buffer = NULL;  in spidev_release()
654 		spin_lock_irq(&spidev->spi_lock);  in spidev_release()
655 		if (spidev->spi)  in spidev_release()
656 			spidev->speed_hz = spidev->spi->max_speed_hz;  in spidev_release()
659 		dofree = (spidev->spi == NULL);  in spidev_release()
660 		spin_unlock_irq(&spidev->spi_lock);  in spidev_release()
663 			kfree(spidev);  in spidev_release()
707 	struct spidev_data	*spidev;  in spidev_probe()  local
723 	spidev = kzalloc(sizeof(*spidev), GFP_KERNEL);  in spidev_probe()
724 	if (!spidev)  in spidev_probe()
728 	spidev->spi = spi;  in spidev_probe()
729 	spin_lock_init(&spidev->spi_lock);  in spidev_probe()
730 	mutex_init(&spidev->buf_lock);  in spidev_probe()
732 	INIT_LIST_HEAD(&spidev->device_entry);  in spidev_probe()
742 		spidev->devt = MKDEV(SPIDEV_MAJOR, minor);  in spidev_probe()
743 		dev = device_create(spidev_class, &spi->dev, spidev->devt,  in spidev_probe()
744 				    spidev, "spidev%d.%d",  in spidev_probe()
753 		list_add(&spidev->device_entry, &device_list);  in spidev_probe()
757 	spidev->speed_hz = spi->max_speed_hz;  in spidev_probe()
760 		spi_set_drvdata(spi, spidev);  in spidev_probe()
762 		kfree(spidev);  in spidev_probe()
769 	struct spidev_data	*spidev = spi_get_drvdata(spi);  in spidev_remove()  local
772 	spin_lock_irq(&spidev->spi_lock);  in spidev_remove()
773 	spidev->spi = NULL;  in spidev_remove()
774 	spin_unlock_irq(&spidev->spi_lock);  in spidev_remove()
778 	list_del(&spidev->device_entry);  in spidev_remove()
779 	device_destroy(spidev_class, spidev->devt);  in spidev_remove()
780 	clear_bit(MINOR(spidev->devt), minors);  in spidev_remove()
781 	if (spidev->users == 0)  in spidev_remove()
782 		kfree(spidev);  in spidev_remove()