1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * v4l2-spi - SPI helpers for Video4Linux2
8 #include <media/v4l2-common.h>
9 #include <media/v4l2-device.h>
11 void v4l2_spi_subdev_unregister(struct v4l2_subdev *sd)  in v4l2_spi_subdev_unregister()  argument
13 	struct spi_device *spi = v4l2_get_subdevdata(sd);  in v4l2_spi_subdev_unregister()
15 	if (spi && !spi->dev.of_node && !spi->dev.fwnode)  in v4l2_spi_subdev_unregister()
19 void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,  in v4l2_spi_subdev_init()  argument
22 	v4l2_subdev_init(sd, ops);  in v4l2_spi_subdev_init()
23 	sd->flags |= V4L2_SUBDEV_FL_IS_SPI;  in v4l2_spi_subdev_init()
25 	sd->owner = spi->dev.driver->owner;  in v4l2_spi_subdev_init()
26 	sd->dev = &spi->dev;  in v4l2_spi_subdev_init()
28 	v4l2_set_subdevdata(sd, spi);  in v4l2_spi_subdev_init()
29 	spi_set_drvdata(spi, sd);  in v4l2_spi_subdev_init()
31 	snprintf(sd->name, sizeof(sd->name), "%s %s",  in v4l2_spi_subdev_init()
32 		 spi->dev.driver->name, dev_name(&spi->dev));  in v4l2_spi_subdev_init()
40 	struct v4l2_subdev *sd = NULL;  in v4l2_spi_new_subdev()  local
45 	if (info->modalias[0])  in v4l2_spi_new_subdev()
46 		request_module(info->modalias);  in v4l2_spi_new_subdev()
50 	if (!spi || !spi->dev.driver)  in v4l2_spi_new_subdev()
53 	if (!try_module_get(spi->dev.driver->owner))  in v4l2_spi_new_subdev()
56 	sd = spi_get_drvdata(spi);  in v4l2_spi_new_subdev()
62 	if (__v4l2_device_register_subdev(v4l2_dev, sd, sd->owner))  in v4l2_spi_new_subdev()
63 		sd = NULL;  in v4l2_spi_new_subdev()
66 	module_put(spi->dev.driver->owner);  in v4l2_spi_new_subdev()
70 	 * If we have a client but no subdev, then something went wrong and  in v4l2_spi_new_subdev()
73 	if (!sd)  in v4l2_spi_new_subdev()
76 	return sd;  in v4l2_spi_new_subdev()