Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 203 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
new file mode 100644
index 0000000000..1a5dbae24e
--- /dev/null
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -0,0 +1,203 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
+ * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
+ *
+ * Based in the radio Maestro PCI driver. Actually it uses the same chip
+ * for radio but different pci controller.
+ *
+ * I didn't have any specs I reversed engineered the protocol from
+ * the windows driver (radio.dll).
+ *
+ * The card uses the TEA5757 chip that includes a search function but it
+ * is useless as I haven't found any way to read back the frequency. If
+ * anybody does please mail me.
+ *
+ * For the pdf file see:
+ * http://www.nxp.com/acrobat_download2/expired_datasheets/TEA5757_5759_3.pdf
+ *
+ *
+ * CHANGES:
+ *   0.75b
+ *     - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
+ *
+ *   0.75      Sun Feb  4 22:51:27 EET 2001
+ *     - tiding up
+ *     - removed support for multiple devices as it didn't work anyway
+ *
+ * BUGS:
+ *   - card unmutes if you change frequency
+ *
+ * (c) 2006, 2007 by Mauro Carvalho Chehab <mchehab@kernel.org>:
+ *	- Conversion to V4L2 API
+ *      - Uses video_ioctl2 for parsing and to add debug support
+ */
+
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/videodev2.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <media/drv-intf/tea575x.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+
+MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
+MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0.0");
+
+static int radio_nr = -1;
+module_param(radio_nr, int, 0644);
+MODULE_PARM_DESC(radio_nr, "Radio device number");
+
+/* TEA5757 pin mappings */
+static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;
+
+static atomic_t maxiradio_instance = ATOMIC_INIT(0);
+
+#define PCI_VENDOR_ID_GUILLEMOT 0x5046
+#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
+
+struct maxiradio
+{
+	struct snd_tea575x tea;
+	struct v4l2_device v4l2_dev;
+	struct pci_dev *pdev;
+
+	u16	io;	/* base of radio io */
+};
+
+static inline struct maxiradio *to_maxiradio(struct v4l2_device *v4l2_dev)
+{
+	return container_of(v4l2_dev, struct maxiradio, v4l2_dev);
+}
+
+static void maxiradio_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
+{
+	struct maxiradio *dev = tea->private_data;
+	u8 bits = 0;
+
+	bits |= (pins & TEA575X_DATA) ? data : 0;
+	bits |= (pins & TEA575X_CLK)  ? clk  : 0;
+	bits |= (pins & TEA575X_WREN) ? wren : 0;
+	bits |= power;
+
+	outb(bits, dev->io);
+}
+
+/* Note: this card cannot read out the data of the shift registers,
+   only the mono/stereo pin works. */
+static u8 maxiradio_tea575x_get_pins(struct snd_tea575x *tea)
+{
+	struct maxiradio *dev = tea->private_data;
+	u8 bits = inb(dev->io);
+
+	return  ((bits & data) ? TEA575X_DATA : 0) |
+		((bits & mo_st) ? TEA575X_MOST : 0);
+}
+
+static void maxiradio_tea575x_set_direction(struct snd_tea575x *tea, bool output)
+{
+}
+
+static const struct snd_tea575x_ops maxiradio_tea_ops = {
+	.set_pins = maxiradio_tea575x_set_pins,
+	.get_pins = maxiradio_tea575x_get_pins,
+	.set_direction = maxiradio_tea575x_set_direction,
+};
+
+static int maxiradio_probe(struct pci_dev *pdev,
+			   const struct pci_device_id *ent)
+{
+	struct maxiradio *dev;
+	struct v4l2_device *v4l2_dev;
+	int retval = -ENOMEM;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (dev == NULL) {
+		dev_err(&pdev->dev, "not enough memory\n");
+		return -ENOMEM;
+	}
+
+	v4l2_dev = &dev->v4l2_dev;
+	v4l2_device_set_name(v4l2_dev, "maxiradio", &maxiradio_instance);
+
+	retval = v4l2_device_register(&pdev->dev, v4l2_dev);
+	if (retval < 0) {
+		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+		goto errfr;
+	}
+	dev->tea.private_data = dev;
+	dev->tea.ops = &maxiradio_tea_ops;
+	/* The data pin cannot be read. This may be a hardware limitation, or
+	   we just don't know how to read it. */
+	dev->tea.cannot_read_data = true;
+	dev->tea.v4l2_dev = v4l2_dev;
+	dev->tea.radio_nr = radio_nr;
+	strscpy(dev->tea.card, "Maxi Radio FM2000", sizeof(dev->tea.card));
+
+	retval = -ENODEV;
+
+	if (!request_region(pci_resource_start(pdev, 0),
+			   pci_resource_len(pdev, 0), v4l2_dev->name)) {
+		dev_err(&pdev->dev, "can't reserve I/O ports\n");
+		goto err_hdl;
+	}
+
+	if (pci_enable_device(pdev))
+		goto err_out_free_region;
+
+	dev->io = pci_resource_start(pdev, 0);
+	if (snd_tea575x_init(&dev->tea, THIS_MODULE)) {
+		printk(KERN_ERR "radio-maxiradio: Unable to detect TEA575x tuner\n");
+		goto err_out_free_region;
+	}
+	return 0;
+
+err_out_free_region:
+	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+err_hdl:
+	v4l2_device_unregister(v4l2_dev);
+errfr:
+	kfree(dev);
+	return retval;
+}
+
+static void maxiradio_remove(struct pci_dev *pdev)
+{
+	struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev);
+	struct maxiradio *dev = to_maxiradio(v4l2_dev);
+
+	snd_tea575x_exit(&dev->tea);
+	/* Turn off power */
+	outb(0, dev->io);
+	v4l2_device_unregister(v4l2_dev);
+	release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+	kfree(dev);
+}
+
+static const struct pci_device_id maxiradio_pci_tbl[] = {
+	{ PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
+		PCI_ANY_ID, PCI_ANY_ID, },
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
+
+static struct pci_driver maxiradio_driver = {
+	.name		= "radio-maxiradio",
+	.id_table	= maxiradio_pci_tbl,
+	.probe		= maxiradio_probe,
+	.remove		= maxiradio_remove,
+};
+
+module_pci_driver(maxiradio_driver);