Added almost all other V4L missing drivers to the tree

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Now, drivers/media tree is complete. Only missing zoran36120
since this won't work and it is a good candidate to be removed
from kernel soon.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 383 insertions, 0 deletions

diff --git a/linux/drivers/media/radio/radio-maestro.c b/linux/drivers/media/radio/radio-maestro.c
new file mode 100644
index 000000000..613a84142
--- /dev/null
+++ b/linux/drivers/media/radio/radio-maestro.c
@@ -0,0 +1,383 @@
+/* Maestro PCI sound card radio driver for Linux support
+ * (c) 2000 A. Tlalka, atlka@pg.gda.pl
+ * Notes on the hardware
+ *
+ *  + Frequency control is done digitally 
+ *  + No volume control - only mute/unmute - you have to use Aux line volume
+ *  control on Maestro card to set the volume
+ *  + Radio status (tuned/not_tuned and stereo/mono) is valid some time after
+ *  frequency setting (>100ms) and only when the radio is unmuted.
+ *  version 0.02
+ *  + io port is automatically detected - only the first radio is used
+ *  version 0.03
+ *  + thread access locking additions
+ *  version 0.04
+ * + code improvements
+ * + VIDEO_TUNER_LOW is permanent
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include "compat.h"
+#include <linux/videodev.h>
+
+
+#define DRIVER_VERSION	"0.05"
+
+#define GPIO_DATA	0x60   /* port offset from ESS_IO_BASE */
+
+#define IO_MASK		4      /* mask      register offset from GPIO_DATA
+				bits 1=unmask write to given bit */
+#define IO_DIR		8      /* direction register offset from GPIO_DATA
+				bits 0/1=read/write direction */
+
+#define GPIO6		0x0040 /* mask bits for GPIO lines */
+#define GPIO7		0x0080
+#define GPIO8		0x0100
+#define GPIO9		0x0200
+
+#define STR_DATA	GPIO6  /* radio TEA5757 pins and GPIO bits */
+#define STR_CLK		GPIO7
+#define STR_WREN	GPIO8
+#define STR_MOST	GPIO9
+
+#define FREQ_LO		 50*16000
+#define FREQ_HI		150*16000
+
+#define FREQ_IF		171200 /* 10.7*16000   */
+#define FREQ_STEP	200    /* 12.5*16      */
+
+#define FREQ2BITS(x)	((((unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
+			/(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */
+
+#define BITS2FREQ(x)	((x) * FREQ_STEP - FREQ_IF)
+
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+
+static int radio_ioctl(struct inode *inode, struct file *file,
+	unsigned int cmd, unsigned long arg);
+static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+static void maestro_remove(struct pci_dev *pdev);
+
+static struct pci_device_id maestro_r_pci_tbl[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1968),
+		.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
+		.class_mask = 0xffff00 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ESS1978),
+		.class = PCI_CLASS_MULTIMEDIA_AUDIO << 8,
+		.class_mask = 0xffff00 },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, maestro_r_pci_tbl);
+
+static struct pci_driver maestro_r_driver = {
+	.name		= "maestro_radio",
+	.id_table	= maestro_r_pci_tbl,
+	.probe		= maestro_probe,
+	.remove		= __devexit_p(maestro_remove),
+};
+
+static struct file_operations maestro_fops = {
+	.owner		= THIS_MODULE,
+	.open           = video_exclusive_open,
+	.release        = video_exclusive_release,
+	.ioctl		= radio_ioctl,
+	.compat_ioctl	= v4l_compat_ioctl32,
+	.llseek         = no_llseek,
+};
+
+static struct video_device maestro_radio = {
+	.name		= "Maestro radio",
+	.type		= VID_TYPE_TUNER,
+	.hardware	= VID_HARDWARE_SF16MI,
+	.fops		= &maestro_fops,
+};
+
+struct radio_device {
+	u16	io,	/* base of Maestro card radio io (GPIO_DATA)*/
+		muted,	/* VIDEO_AUDIO_MUTE */
+		stereo,	/* VIDEO_TUNER_STEREO_ON */	
+		tuned;	/* signal strength (0 or 0xffff) */
+	struct mutex lock;
+};
+
+static u32 radio_bits_get(struct radio_device *dev)
+{
+	register u16 io=dev->io, l, rdata;
+	register u32 data=0;
+	u16 omask;
+
+	omask = inw(io + IO_MASK);
+	outw(~(STR_CLK | STR_WREN), io + IO_MASK);
+	outw(0, io);
+	udelay(16);
+
+	for (l=24;l--;) {
+		outw(STR_CLK, io);		/* HI state */
+		udelay(2);
+		if(!l) 
+			dev->tuned = inw(io) & STR_MOST ? 0 : 0xffff;
+		outw(0, io);			/* LO state */
+		udelay(2);
+		data <<= 1;			/* shift data */
+		rdata = inw(io);
+		if(!l)
+			dev->stereo =  rdata & STR_MOST ? 
+			0 : VIDEO_TUNER_STEREO_ON;
+		else
+			if(rdata & STR_DATA)
+				data++;
+		udelay(2);
+	}
+
+	if(dev->muted)
+		outw(STR_WREN, io);
+
+	udelay(4);
+	outw(omask, io + IO_MASK);
+
+	return data & 0x3ffe;
+}
+
+static void radio_bits_set(struct radio_device *dev, u32 data)
+{
+	register u16 io=dev->io, l, bits;
+	u16 omask, odir;
+
+	omask = inw(io + IO_MASK);
+	odir  = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
+	outw(odir | STR_DATA, io + IO_DIR);
+	outw(~(STR_DATA | STR_CLK | STR_WREN), io + IO_MASK);
+	udelay(16);
+	for (l=25;l;l--) {
+		bits = ((data >> 18) & STR_DATA) | STR_WREN ;
+		data <<= 1;			/* shift data */
+		outw(bits, io);			/* start strobe */
+		udelay(2);
+		outw(bits | STR_CLK, io);	/* HI level */
+		udelay(2);
+		outw(bits, io);			/* LO level */
+		udelay(4);
+	}
+
+	if(!dev->muted)
+		outw(0, io);
+
+	udelay(4);
+	outw(omask, io + IO_MASK);
+	outw(odir, io + IO_DIR);
+	msleep(125);
+}
+
+static inline int radio_function(struct inode *inode, struct file *file,
+	unsigned int cmd, void *arg)
+{
+	struct video_device *dev = video_devdata(file);
+	struct radio_device *card = video_get_drvdata(dev);
+
+	switch (cmd) {
+	case VIDIOCGCAP: {
+		struct video_capability *v = arg;
+		memset(v, 0, sizeof(*v));
+		strcpy(v->name, "Maestro radio");
+		v->type = VID_TYPE_TUNER;
+		v->channels = v->audios = 1;
+		return 0;
+	} case VIDIOCGTUNER: {
+		struct video_tuner *v = arg;
+		if (v->tuner)
+			return -EINVAL;
+		(void)radio_bits_get(card);
+		v->flags = VIDEO_TUNER_LOW | card->stereo;
+		v->signal = card->tuned;
+		strcpy(v->name, "FM");
+		v->rangelow = FREQ_LO;
+		v->rangehigh = FREQ_HI;
+		v->mode = VIDEO_MODE_AUTO;
+		return 0;
+	} case VIDIOCSTUNER: {
+		struct video_tuner *v = arg;
+		if (v->tuner != 0)
+			return -EINVAL;
+		return 0;
+	} case VIDIOCGFREQ: {
+		unsigned long *freq = arg;
+		*freq = BITS2FREQ(radio_bits_get(card));
+		return 0;
+	} case VIDIOCSFREQ: {
+		unsigned long *freq = arg;
+		if (*freq < FREQ_LO || *freq > FREQ_HI)
+			return -EINVAL;
+		radio_bits_set(card, FREQ2BITS(*freq));
+		return 0;
+	} case VIDIOCGAUDIO: {
+		struct video_audio *v = arg;
+		memset(v, 0, sizeof(*v));
+		strcpy(v->name, "Radio");
+		v->flags = VIDEO_AUDIO_MUTABLE | card->muted;
+		v->mode = VIDEO_SOUND_STEREO;
+		return 0;
+	} case VIDIOCSAUDIO: {
+		struct video_audio *v = arg;
+		if (v->audio)
+			return -EINVAL;
+		{
+			register u16 io = card->io;
+			register u16 omask = inw(io + IO_MASK);
+			outw(~STR_WREN, io + IO_MASK);
+			outw((card->muted = v->flags & VIDEO_AUDIO_MUTE) ?
+				STR_WREN : 0, io);
+			udelay(4);
+			outw(omask, io + IO_MASK);
+			msleep(125);
+			return 0;
+		}
+	} case VIDIOCGUNIT: {
+		struct video_unit *v = arg;
+		v->video = VIDEO_NO_UNIT;
+		v->vbi = VIDEO_NO_UNIT;
+		v->radio = dev->minor;
+		v->audio = 0;
+		v->teletext = VIDEO_NO_UNIT;
+		return 0;
+	} default:
+		return -ENOIOCTLCMD;
+	}
+}
+
+static int radio_ioctl(struct inode *inode, struct file *file,
+	unsigned int cmd, unsigned long arg)
+{
+	struct video_device *dev = video_devdata(file);
+	struct radio_device *card = video_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&card->lock);
+	ret = video_usercopy(inode, file, cmd, arg, radio_function);
+	mutex_unlock(&card->lock);
+
+	return ret;
+}
+
+static u16 __devinit radio_power_on(struct radio_device *dev)
+{
+	register u16 io = dev->io;
+	register u32 ofreq;
+	u16 omask, odir;
+
+	omask = inw(io + IO_MASK);
+	odir = (inw(io + IO_DIR) & ~STR_DATA) | (STR_CLK | STR_WREN);
+	outw(odir & ~STR_WREN, io + IO_DIR);
+	dev->muted = inw(io) & STR_WREN ? 0 : VIDEO_AUDIO_MUTE;
+	outw(odir, io + IO_DIR);
+	outw(~(STR_WREN | STR_CLK), io + IO_MASK);
+	outw(dev->muted ? 0 : STR_WREN, io);
+	udelay(16);
+	outw(omask, io + IO_MASK);
+	ofreq = radio_bits_get(dev);
+
+	if ((ofreq < FREQ2BITS(FREQ_LO)) || (ofreq > FREQ2BITS(FREQ_HI)))
+		ofreq = FREQ2BITS(FREQ_LO);
+	radio_bits_set(dev, ofreq);
+
+	return (ofreq == radio_bits_get(dev));
+}
+
+static int __devinit maestro_probe(struct pci_dev *pdev,
+	const struct pci_device_id *ent)
+{
+	struct radio_device *radio_unit;
+	struct video_device *maestro_radio_inst;
+	int retval;
+
+	retval = pci_enable_device(pdev);
+	if (retval) {
+		dev_err(&pdev->dev, "enabling pci device failed!\n");
+		goto err;
+	}
+
+	retval = -ENOMEM;
+
+	radio_unit = kzalloc(sizeof(*radio_unit), GFP_KERNEL);
+	if (radio_unit == NULL) {
+		dev_err(&pdev->dev, "not enough memory\n");
+		goto err;
+	}
+
+	radio_unit->io = pci_resource_start(pdev, 0) + GPIO_DATA;
+	mutex_init(&radio_unit->lock);
+
+	maestro_radio_inst = video_device_alloc();
+	if (maestro_radio_inst == NULL) {
+		dev_err(&pdev->dev, "not enough memory\n");
+		goto errfr;
+	}
+
+	memcpy(maestro_radio_inst, &maestro_radio, sizeof(maestro_radio));
+	video_set_drvdata(maestro_radio_inst, radio_unit);
+	pci_set_drvdata(pdev, maestro_radio_inst);
+
+	retval = video_register_device(maestro_radio_inst, VFL_TYPE_RADIO,
+		radio_nr);
+	if (retval) {
+		printk(KERN_ERR "can't register video device!\n");
+		goto errfr1;
+	}
+
+	if (!radio_power_on(radio_unit)) {
+		retval = -EIO;
+		goto errunr;
+	}
+
+	dev_info(&pdev->dev, "version " DRIVER_VERSION " time " __TIME__ "  "
+		 __DATE__ "\n");
+	dev_info(&pdev->dev, "radio chip initialized\n");
+
+	return 0;
+errunr:
+	video_unregister_device(maestro_radio_inst);
+errfr1:
+	kfree(maestro_radio_inst);
+errfr:
+	kfree(radio_unit);
+err:
+	return retval;
+
+}
+
+static void __devexit maestro_remove(struct pci_dev *pdev)
+{
+	struct video_device *vdev = pci_get_drvdata(pdev);
+
+	video_unregister_device(vdev);
+}
+
+static int __init maestro_radio_init(void)
+{
+	int retval = pci_register_driver(&maestro_r_driver);
+
+	if (retval)
+		printk(KERN_ERR "error during registration pci driver\n");
+
+	return retval;
+}
+
+static void __exit maestro_radio_exit(void)
+{
+	pci_unregister_driver(&maestro_r_driver);
+}
+
+module_init(maestro_radio_init);
+module_exit(maestro_radio_exit);
+
+MODULE_AUTHOR("Adam Tlalka, atlka@pg.gda.pl");
+MODULE_DESCRIPTION("Radio driver for the Maestro PCI sound card radio.");
+MODULE_LICENSE("GPL");