1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * drivers/media/radio/radio-si4713.c
7  * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT
18 #include <media/v4l2-device.h>
19 #include <media/v4l2-common.h>
20 #include <media/v4l2-ioctl.h>
21 #include <media/v4l2-fh.h>
22 #include <media/v4l2-ctrls.h>
23 #include <media/v4l2-event.h>
27 static int radio_nr = -1;	/* radio device minor (-1 ==> auto assign) */
30 		 "Minor number for radio device (-1 ==> auto assign)");
36 MODULE_ALIAS("platform:radio-si4713");
45 /* radio_si4713_fops - file operations interface */
50 	.poll = v4l2_ctrl_poll,
57 /* radio_si4713_querycap - query device capabilities */
61 	strscpy(capability->driver, "radio-si4713", sizeof(capability->driver));  in radio_si4713_querycap()
62 	strscpy(capability->card, "Silicon Labs Si4713 Modulator",  in radio_si4713_querycap()
63 		sizeof(capability->card));  in radio_si4713_querycap()
64 	strscpy(capability->bus_info, "platform:radio-si4713",  in radio_si4713_querycap()
65 		sizeof(capability->bus_info));  in radio_si4713_querycap()
75 	return &((struct radio_si4713_device *)video_drvdata(file))->v4l2_dev;  in get_v4l2_dev()
125 /* radio_si4713_vdev_template - video device interface */
128 	.name			= "radio-si4713",
135 /* radio_si4713_pdriver_probe - probe for the device */
138 	struct radio_si4713_platform_data *pdata = pdev->dev.platform_data;  in radio_si4713_pdriver_probe()
144 		dev_err(&pdev->dev, "Cannot proceed without platform data.\n");  in radio_si4713_pdriver_probe()
145 		rval = -EINVAL;  in radio_si4713_pdriver_probe()
149 	rsdev = devm_kzalloc(&pdev->dev, sizeof(*rsdev), GFP_KERNEL);  in radio_si4713_pdriver_probe()
151 		dev_err(&pdev->dev, "Failed to alloc video device.\n");  in radio_si4713_pdriver_probe()
152 		rval = -ENOMEM;  in radio_si4713_pdriver_probe()
155 	mutex_init(&rsdev->lock);  in radio_si4713_pdriver_probe()
157 	rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev);  in radio_si4713_pdriver_probe()
159 		dev_err(&pdev->dev, "Failed to register v4l2 device.\n");  in radio_si4713_pdriver_probe()
163 	sd = i2c_get_clientdata(pdata->subdev);  in radio_si4713_pdriver_probe()
164 	rval = v4l2_device_register_subdev(&rsdev->v4l2_dev, sd);  in radio_si4713_pdriver_probe()
166 		dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n");  in radio_si4713_pdriver_probe()
170 	rsdev->radio_dev = radio_si4713_vdev_template;  in radio_si4713_pdriver_probe()
171 	rsdev->radio_dev.v4l2_dev = &rsdev->v4l2_dev;  in radio_si4713_pdriver_probe()
172 	rsdev->radio_dev.ctrl_handler = sd->ctrl_handler;  in radio_si4713_pdriver_probe()
174 	rsdev->radio_dev.lock = &rsdev->lock;  in radio_si4713_pdriver_probe()
175 	rsdev->radio_dev.device_caps = V4L2_CAP_MODULATOR | V4L2_CAP_RDS_OUTPUT;  in radio_si4713_pdriver_probe()
176 	video_set_drvdata(&rsdev->radio_dev, rsdev);  in radio_si4713_pdriver_probe()
177 	if (video_register_device(&rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) {  in radio_si4713_pdriver_probe()
178 		dev_err(&pdev->dev, "Could not register video device.\n");  in radio_si4713_pdriver_probe()
179 		rval = -EIO;  in radio_si4713_pdriver_probe()
182 	dev_info(&pdev->dev, "New device successfully probed\n");  in radio_si4713_pdriver_probe()
187 	v4l2_device_unregister(&rsdev->v4l2_dev);  in radio_si4713_pdriver_probe()
192 /* radio_si4713_pdriver_remove - remove the device */
199 	video_unregister_device(&rsdev->radio_dev);  in radio_si4713_pdriver_remove()
200 	v4l2_device_unregister(&rsdev->v4l2_dev);  in radio_si4713_pdriver_remove()
207 		.name	= "radio-si4713",