media/radio/radio-maxiradio.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
12  * The card uses the TEA5757 chip that includes a search function but it
22  *     - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
25  *     - tiding up
26  *     - removed support for multiple devices as it didn't work anyway
29  *   - card unmutes if you change frequency
32  *	- Conversion to V4L2 API
33  *      - Uses video_ioctl2 for parsing and to add debug support
40 #include <linux/delay.h>
46 #include <media/drv-intf/tea575x.h>
47 #include <media/v4l2-device.h>
48 #include <media/v4l2-ioctl.h>
49 #include <media/v4l2-fh.h>
50 #include <media/v4l2-ctrls.h>
51 #include <media/v4l2-event.h>
58 static int radio_nr = -1;
86 	struct maxiradio *dev = tea->private_data;  in maxiradio_tea575x_set_pins()
94 	outb(bits, dev->io);  in maxiradio_tea575x_set_pins()
97 /* Note: this card cannot read out the data of the shift registers,
101 	struct maxiradio *dev = tea->private_data;  in maxiradio_tea575x_get_pins()
102 	u8 bits = inb(dev->io);  in maxiradio_tea575x_get_pins()
123 	int retval = -ENOMEM;  in maxiradio_probe()
127 		dev_err(&pdev->dev, "not enough memory\n");  in maxiradio_probe()
128 		return -ENOMEM;  in maxiradio_probe()
131 	v4l2_dev = &dev->v4l2_dev;  in maxiradio_probe()
134 	retval = v4l2_device_register(&pdev->dev, v4l2_dev);  in maxiradio_probe()
139 	dev->tea.private_data = dev;  in maxiradio_probe()
140 	dev->tea.ops = &maxiradio_tea_ops;  in maxiradio_probe()
143 	dev->tea.cannot_read_data = true;  in maxiradio_probe()
144 	dev->tea.v4l2_dev = v4l2_dev;  in maxiradio_probe()
145 	dev->tea.radio_nr = radio_nr;  in maxiradio_probe()
146 	strscpy(dev->tea.card, "Maxi Radio FM2000", sizeof(dev->tea.card));  in maxiradio_probe()
148 	retval = -ENODEV;  in maxiradio_probe()
151 			   pci_resource_len(pdev, 0), v4l2_dev->name)) {  in maxiradio_probe()
152 		dev_err(&pdev->dev, "can't reserve I/O ports\n");  in maxiradio_probe()
159 	dev->io = pci_resource_start(pdev, 0);  in maxiradio_probe()
160 	if (snd_tea575x_init(&dev->tea, THIS_MODULE)) {  in maxiradio_probe()
161 		printk(KERN_ERR "radio-maxiradio: Unable to detect TEA575x tuner\n");  in maxiradio_probe()
180 	snd_tea575x_exit(&dev->tea);  in maxiradio_remove()
182 	outb(0, dev->io);  in maxiradio_remove()
197 	.name		= "radio-maxiradio",