Lines Matching refs:spidev
91 spidev_sync(struct spidev_data *spidev, struct spi_message *message) in spidev_sync() argument
96 spin_lock_irq(&spidev->spi_lock); in spidev_sync()
97 spi = spidev->spi; in spidev_sync()
98 spin_unlock_irq(&spidev->spi_lock); in spidev_sync()
112 spidev_sync_write(struct spidev_data *spidev, size_t len) in spidev_sync_write() argument
115 .tx_buf = spidev->tx_buffer, in spidev_sync_write()
117 .speed_hz = spidev->speed_hz, in spidev_sync_write()
123 return spidev_sync(spidev, &m); in spidev_sync_write()
127 spidev_sync_read(struct spidev_data *spidev, size_t len) in spidev_sync_read() argument
130 .rx_buf = spidev->rx_buffer, in spidev_sync_read()
132 .speed_hz = spidev->speed_hz, in spidev_sync_read()
138 return spidev_sync(spidev, &m); in spidev_sync_read()
147 struct spidev_data *spidev; in spidev_read() local
154 spidev = filp->private_data; in spidev_read()
156 mutex_lock(&spidev->buf_lock); in spidev_read()
157 status = spidev_sync_read(spidev, count); in spidev_read()
161 missing = copy_to_user(buf, spidev->rx_buffer, status); in spidev_read()
167 mutex_unlock(&spidev->buf_lock); in spidev_read()
177 struct spidev_data *spidev; in spidev_write() local
185 spidev = filp->private_data; in spidev_write()
187 mutex_lock(&spidev->buf_lock); in spidev_write()
188 missing = copy_from_user(spidev->tx_buffer, buf, count); in spidev_write()
190 status = spidev_sync_write(spidev, count); in spidev_write()
193 mutex_unlock(&spidev->buf_lock); in spidev_write()
198 static int spidev_message(struct spidev_data *spidev, in spidev_message() argument
218 tx_buf = spidev->tx_buffer; in spidev_message()
219 rx_buf = spidev->rx_buffer; in spidev_message()
272 k_tmp->speed_hz = spidev->speed_hz; in spidev_message()
274 dev_dbg(&spidev->spi->dev, in spidev_message()
280 u_tmp->bits_per_word ? : spidev->spi->bits_per_word, in spidev_message()
283 u_tmp->speed_hz ? : spidev->spi->max_speed_hz); in spidev_message()
288 status = spidev_sync(spidev, &msg); in spidev_message()
293 rx_buf = spidev->rx_buffer; in spidev_message()
339 struct spidev_data *spidev; in spidev_ioctl() local
352 spidev = filp->private_data; in spidev_ioctl()
353 spin_lock_irq(&spidev->spi_lock); in spidev_ioctl()
354 spi = spi_dev_get(spidev->spi); in spidev_ioctl()
355 spin_unlock_irq(&spidev->spi_lock); in spidev_ioctl()
366 mutex_lock(&spidev->buf_lock); in spidev_ioctl()
386 retval = put_user(spidev->speed_hz, (__u32 __user *)arg); in spidev_ioctl()
451 spidev->speed_hz = tmp; in spidev_ioctl()
471 retval = spidev_message(spidev, ioc, n_ioc); in spidev_ioctl()
476 mutex_unlock(&spidev->buf_lock); in spidev_ioctl()
488 struct spidev_data *spidev; in spidev_compat_ioc_message() local
498 spidev = filp->private_data; in spidev_compat_ioc_message()
499 spin_lock_irq(&spidev->spi_lock); in spidev_compat_ioc_message()
500 spi = spi_dev_get(spidev->spi); in spidev_compat_ioc_message()
501 spin_unlock_irq(&spidev->spi_lock); in spidev_compat_ioc_message()
507 mutex_lock(&spidev->buf_lock); in spidev_compat_ioc_message()
525 retval = spidev_message(spidev, ioc, n_ioc); in spidev_compat_ioc_message()
529 mutex_unlock(&spidev->buf_lock); in spidev_compat_ioc_message()
550 struct spidev_data *spidev; in spidev_open() local
555 list_for_each_entry(spidev, &device_list, device_entry) { in spidev_open()
556 if (spidev->devt == inode->i_rdev) { in spidev_open()
567 if (!spidev->tx_buffer) { in spidev_open()
568 spidev->tx_buffer = kmalloc(bufsiz, GFP_KERNEL); in spidev_open()
569 if (!spidev->tx_buffer) { in spidev_open()
570 dev_dbg(&spidev->spi->dev, "open/ENOMEM\n"); in spidev_open()
576 if (!spidev->rx_buffer) { in spidev_open()
577 spidev->rx_buffer = kmalloc(bufsiz, GFP_KERNEL); in spidev_open()
578 if (!spidev->rx_buffer) { in spidev_open()
579 dev_dbg(&spidev->spi->dev, "open/ENOMEM\n"); in spidev_open()
585 spidev->users++; in spidev_open()
586 filp->private_data = spidev; in spidev_open()
593 kfree(spidev->tx_buffer); in spidev_open()
594 spidev->tx_buffer = NULL; in spidev_open()
602 struct spidev_data *spidev; in spidev_release() local
605 spidev = filp->private_data; in spidev_release()
609 spidev->users--; in spidev_release()
610 if (!spidev->users) { in spidev_release()
613 kfree(spidev->tx_buffer); in spidev_release()
614 spidev->tx_buffer = NULL; in spidev_release()
616 kfree(spidev->rx_buffer); in spidev_release()
617 spidev->rx_buffer = NULL; in spidev_release()
619 spin_lock_irq(&spidev->spi_lock); in spidev_release()
620 if (spidev->spi) in spidev_release()
621 spidev->speed_hz = spidev->spi->max_speed_hz; in spidev_release()
624 dofree = (spidev->spi == NULL); in spidev_release()
625 spin_unlock_irq(&spidev->spi_lock); in spidev_release()
628 kfree(spidev); in spidev_release()
714 struct spidev_data *spidev; in spidev_probe() local
730 spidev = kzalloc(sizeof(*spidev), GFP_KERNEL); in spidev_probe()
731 if (!spidev) in spidev_probe()
735 spidev->spi = spi; in spidev_probe()
736 spin_lock_init(&spidev->spi_lock); in spidev_probe()
737 mutex_init(&spidev->buf_lock); in spidev_probe()
739 INIT_LIST_HEAD(&spidev->device_entry); in spidev_probe()
749 spidev->devt = MKDEV(SPIDEV_MAJOR, minor); in spidev_probe()
750 dev = device_create(spidev_class, &spi->dev, spidev->devt, in spidev_probe()
751 spidev, "spidev%d.%d", in spidev_probe()
760 list_add(&spidev->device_entry, &device_list); in spidev_probe()
764 spidev->speed_hz = spi->max_speed_hz; in spidev_probe()
767 spi_set_drvdata(spi, spidev); in spidev_probe()
769 kfree(spidev); in spidev_probe()
776 struct spidev_data *spidev = spi_get_drvdata(spi); in spidev_remove() local
779 spin_lock_irq(&spidev->spi_lock); in spidev_remove()
780 spidev->spi = NULL; in spidev_remove()
781 spin_unlock_irq(&spidev->spi_lock); in spidev_remove()
785 list_del(&spidev->device_entry); in spidev_remove()
786 device_destroy(spidev_class, spidev->devt); in spidev_remove()
787 clear_bit(MINOR(spidev->devt), minors); in spidev_remove()
788 if (spidev->users == 0) in spidev_remove()
789 kfree(spidev); in spidev_remove()