1 // SPDX-License-Identifier: GPL-2.0-only
16 #include <media/v4l2-device.h>
17 #include <media/v4l2-ioctl.h>
18 #include <media/v4l2-ctrls.h>
19 #include <media/v4l2-event.h>
22  * 'Thanko's Raremono' is a Japanese si4734-based AM/FM/SW USB receiver:
30  * Sadly the firmware used in this product hides lots of goodies since the
42  * The vendor and product IDs (and in fact all other lsusb information as
61 /* Frequency limits in KHz */
74 	/* Band FM */
84 	/* Band AM */
93 	/* Band SW */
112 	u32 band;  member
122 static int raremono_cmd_main(struct raremono_device *radio, unsigned band, unsigned freq)  in raremono_cmd_main()  argument
127 	switch (band) {  in raremono_cmd_main()
139 	radio->buffer[0] = 0x04 + band_offset;  in raremono_cmd_main()
140 	radio->buffer[1] = freq >> 8;  in raremono_cmd_main()
141 	radio->buffer[2] = freq & 0xff;  in raremono_cmd_main()
143 	ret = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0),  in raremono_cmd_main()
146 			0x0300 + radio->buffer[0], 2,  in raremono_cmd_main()
147 			radio->buffer, 3, USB_TIMEOUT);  in raremono_cmd_main()
150 		dev_warn(radio->v4l2_dev.dev, "%s failed (%d)\n", __func__, ret);  in raremono_cmd_main()
153 	radio->curfreq = (band == BAND_FM) ? freq * 10 : freq;  in raremono_cmd_main()
158  * We call video_unregister_device in any case.
159  * The last function called in this procedure is
166 	dev_info(&intf->dev, "Thanko's Raremono disconnected\n");  in usb_raremono_disconnect()
168 	mutex_lock(&radio->lock);  in usb_raremono_disconnect()
170 	video_unregister_device(&radio->vdev);  in usb_raremono_disconnect()
171 	v4l2_device_disconnect(&radio->v4l2_dev);  in usb_raremono_disconnect()
172 	mutex_unlock(&radio->lock);  in usb_raremono_disconnect()
173 	v4l2_device_put(&radio->v4l2_dev);  in usb_raremono_disconnect()
184 	strscpy(v->driver, "radio-raremono", sizeof(v->driver));  in vidioc_querycap()
185 	strscpy(v->card, "Thanko's Raremono", sizeof(v->card));  in vidioc_querycap()
186 	usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));  in vidioc_querycap()
191 		struct v4l2_frequency_band *band)  in vidioc_enum_freq_bands()  argument
193 	if (band->tuner != 0)  in vidioc_enum_freq_bands()
194 		return -EINVAL;  in vidioc_enum_freq_bands()
196 	if (band->index >= ARRAY_SIZE(bands))  in vidioc_enum_freq_bands()
197 		return -EINVAL;  in vidioc_enum_freq_bands()
199 	*band = bands[band->index];  in vidioc_enum_freq_bands()
210 	if (v->index > 0)  in vidioc_g_tuner()
211 		return -EINVAL;  in vidioc_g_tuner()
213 	strscpy(v->name, "AM/FM/SW", sizeof(v->name));  in vidioc_g_tuner()
214 	v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |  in vidioc_g_tuner()
216 	v->rangelow = AM_FREQ_RANGE_LOW * 16;  in vidioc_g_tuner()
217 	v->rangehigh = FM_FREQ_RANGE_HIGH * 16;  in vidioc_g_tuner()
218 	v->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;  in vidioc_g_tuner()
219 	v->audmode = (radio->curfreq < FM_FREQ_RANGE_LOW) ?  in vidioc_g_tuner()
221 	memset(radio->buffer, 1, BUFFER_LENGTH);  in vidioc_g_tuner()
222 	ret = usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),  in vidioc_g_tuner()
223 			1, 0xa1, 0x030d, 2, radio->buffer, BUFFER_LENGTH, USB_TIMEOUT);  in vidioc_g_tuner()
226 		dev_warn(radio->v4l2_dev.dev, "%s failed (%d)\n", __func__, ret);  in vidioc_g_tuner()
229 	v->signal = ((radio->buffer[1] & 0xf) << 8 | radio->buffer[2]) << 4;  in vidioc_g_tuner()
236 	return v->index ? -EINVAL : 0;  in vidioc_s_tuner()
244 	unsigned band;  in vidioc_s_frequency()  local
246 	if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)  in vidioc_s_frequency()
247 		return -EINVAL;  in vidioc_s_frequency()
249 	if (f->frequency >= (FM_FREQ_RANGE_LOW + SW_FREQ_RANGE_HIGH) * 8)  in vidioc_s_frequency()
250 		band = BAND_FM;  in vidioc_s_frequency()
251 	else if (f->frequency <= (AM_FREQ_RANGE_HIGH + SW_FREQ_RANGE_LOW) * 8)  in vidioc_s_frequency()
252 		band = BAND_AM;  in vidioc_s_frequency()
254 		band = BAND_SW;  in vidioc_s_frequency()
256 	freq = clamp_t(u32, f->frequency, bands[band].rangelow, bands[band].rangehigh);  in vidioc_s_frequency()
257 	return raremono_cmd_main(radio, band, freq / 16);  in vidioc_s_frequency()
265 	if (f->tuner != 0)  in vidioc_g_frequency()
266 		return -EINVAL;  in vidioc_g_frequency()
267 	f->type = V4L2_TUNER_RADIO;  in vidioc_g_frequency()
268 	f->frequency = radio->curfreq * 16;  in vidioc_g_frequency()
276 	kfree(radio->buffer);  in raremono_device_release()
306 		return -ENOMEM;  in usb_raremono_probe()
307 	radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);  in usb_raremono_probe()
308 	if (!radio->buffer) {  in usb_raremono_probe()
310 		return -ENOMEM;  in usb_raremono_probe()
313 	radio->usbdev = interface_to_usbdev(intf);  in usb_raremono_probe()
314 	radio->intf = intf;  in usb_raremono_probe()
326 	retval = usb_control_msg(radio->usbdev,  in usb_raremono_probe()
327 		usb_rcvctrlpipe(radio->usbdev, 0),  in usb_raremono_probe()
331 		radio->buffer, 3, 500);  in usb_raremono_probe()
333 	    (get_unaligned_be16(&radio->buffer[1]) & 0xfff) == 0x0242) {  in usb_raremono_probe()
334 		dev_info(&intf->dev, "this is not Thanko's Raremono.\n");  in usb_raremono_probe()
335 		retval = -ENODEV;  in usb_raremono_probe()
339 	dev_info(&intf->dev, "Thanko's Raremono connected: (%04X:%04X)\n",  in usb_raremono_probe()
340 			id->idVendor, id->idProduct);  in usb_raremono_probe()
342 	retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);  in usb_raremono_probe()
344 		dev_err(&intf->dev, "couldn't register v4l2_device\n");  in usb_raremono_probe()
348 	mutex_init(&radio->lock);  in usb_raremono_probe()
350 	strscpy(radio->vdev.name, radio->v4l2_dev.name,  in usb_raremono_probe()
351 		sizeof(radio->vdev.name));  in usb_raremono_probe()
352 	radio->vdev.v4l2_dev = &radio->v4l2_dev;  in usb_raremono_probe()
353 	radio->vdev.fops = &usb_raremono_fops;  in usb_raremono_probe()
354 	radio->vdev.ioctl_ops = &usb_raremono_ioctl_ops;  in usb_raremono_probe()
355 	radio->vdev.lock = &radio->lock;  in usb_raremono_probe()
356 	radio->vdev.release = video_device_release_empty;  in usb_raremono_probe()
357 	radio->vdev.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;  in usb_raremono_probe()
358 	radio->v4l2_dev.release = raremono_device_release;  in usb_raremono_probe()
360 	usb_set_intfdata(intf, &radio->v4l2_dev);  in usb_raremono_probe()
362 	video_set_drvdata(&radio->vdev, radio);  in usb_raremono_probe()
366 	retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, -1);  in usb_raremono_probe()
368 		dev_info(&intf->dev, "V4L2 device registered as %s\n",  in usb_raremono_probe()
369 				video_device_node_name(&radio->vdev));  in usb_raremono_probe()
372 	dev_err(&intf->dev, "could not register video device\n");  in usb_raremono_probe()
373 	v4l2_device_unregister(&radio->v4l2_dev);  in usb_raremono_probe()
376 	kfree(radio->buffer);  in usb_raremono_probe()
383 	.name			= "radio-raremono",