1 files changed, 136 insertions, 275 deletions

diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
index 59b86a6b4b0..026e88eef29 100644
--- a/drivers/media/radio/radio-zoltrix.c
+++ b/drivers/media/radio/radio-zoltrix.c
@@ -1,5 +1,6 @@
-/* zoltrix radio plus driver for Linux radio support
- * (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
+/*
+ * Zoltrix Radio Plus driver
+ * Copyright 1998 C. van Schaik <carl@leg.uct.ac.za>
  *
  * BUGS
  *  Due to the inconsistency in reading from the signal flags
@@ -24,364 +25,224 @@
  *	      - Added unmute function
  *	      - Reworked ioctl functions
  * 2002-07-15 - Fix Stereo typo
+ *
+ * 2006-07-24 - Converted to V4L2 API
+ *		by Mauro Carvalho Chehab <mchehab@infradead.org>
+ *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
+ *
+ * Note that this is the driver for the Zoltrix Radio Plus.
+ * This driver does not work for the Zoltrix Radio Plus 108 or the
+ * Zoltrix Radio Plus for Windows.
+ *
+ * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
  */
 
 #include <linux/module.h>	/* Modules                        */
 #include <linux/init.h>		/* Initdata                       */
 #include <linux/ioport.h>	/* request_region		  */
 #include <linux/delay.h>	/* udelay, msleep                 */
-#include <asm/io.h>		/* outb, outb_p                   */
-#include <asm/uaccess.h>	/* copy to/from user              */
-#include <linux/videodev.h>	/* kernel radio structs           */
-#include <media/v4l2-common.h>
-#include <linux/config.h>	/* CONFIG_RADIO_ZOLTRIX_PORT      */
+#include <linux/videodev2.h>	/* kernel radio structs           */
+#include <linux/mutex.h>
+#include <linux/io.h>		/* outb, outb_p                   */
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include "radio-isa.h"
+
+MODULE_AUTHOR("C. van Schaik");
+MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.1.99");
 
 #ifndef CONFIG_RADIO_ZOLTRIX_PORT
 #define CONFIG_RADIO_ZOLTRIX_PORT -1
 #endif
 
-static int io = CONFIG_RADIO_ZOLTRIX_PORT;
-static int radio_nr = -1;
+#define ZOLTRIX_MAX 2
+
+static int io[ZOLTRIX_MAX] = { [0] = CONFIG_RADIO_ZOLTRIX_PORT,
+			       [1 ... (ZOLTRIX_MAX - 1)] = -1 };
+static int radio_nr[ZOLTRIX_MAX] = { [0 ... (ZOLTRIX_MAX - 1)] = -1 };
+
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the Zoltrix Radio Plus card (0x20c or 0x30c)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
 
-struct zol_device {
-	int port;
+struct zoltrix {
+	struct radio_isa_card isa;
 	int curvol;
-	unsigned long curfreq;
-	int muted;
-	unsigned int stereo;
-	struct mutex lock;
+	bool muted;
 };
 
-static int zol_setvol(struct zol_device *dev, int vol)
+static struct radio_isa_card *zoltrix_alloc(void)
 {
-	dev->curvol = vol;
-	if (dev->muted)
-		return 0;
+	struct zoltrix *zol = kzalloc(sizeof(*zol), GFP_KERNEL);
 
-	mutex_lock(&dev->lock);
-	if (vol == 0) {
-		outb(0, io);
-		outb(0, io);
-		inb(io + 3);    /* Zoltrix needs to be read to confirm */
-		mutex_unlock(&dev->lock);
+	return zol ? &zol->isa : NULL;
+}
+
+static int zoltrix_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
+{
+	struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
+
+	zol->curvol = vol;
+	zol->muted = mute;
+	if (mute || vol == 0) {
+		outb(0, isa->io);
+		outb(0, isa->io);
+		inb(isa->io + 3);            /* Zoltrix needs to be read to confirm */
 		return 0;
 	}
 
-	outb(dev->curvol-1, io);
+	outb(vol - 1, isa->io);
 	msleep(10);
-	inb(io + 2);
-	mutex_unlock(&dev->lock);
+	inb(isa->io + 2);
 	return 0;
 }
 
-static void zol_mute(struct zol_device *dev)
-{
-	dev->muted = 1;
-	mutex_lock(&dev->lock);
-	outb(0, io);
-	outb(0, io);
-	inb(io + 3);            /* Zoltrix needs to be read to confirm */
-	mutex_unlock(&dev->lock);
-}
-
-static void zol_unmute(struct zol_device *dev)
+/* tunes the radio to the desired frequency */
+static int zoltrix_s_frequency(struct radio_isa_card *isa, u32 freq)
 {
-	dev->muted = 0;
-	zol_setvol(dev, dev->curvol);
-}
-
-static int zol_setfreq(struct zol_device *dev, unsigned long freq)
-{
-	/* tunes the radio to the desired frequency */
+	struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
+	struct v4l2_device *v4l2_dev = &isa->v4l2_dev;
 	unsigned long long bitmask, f, m;
-	unsigned int stereo = dev->stereo;
+	bool stereo = isa->stereo;
 	int i;
 
-	if (freq == 0)
-		return 1;
+	if (freq == 0) {
+		v4l2_warn(v4l2_dev, "cannot set a frequency of 0.\n");
+		return -EINVAL;
+	}
+
 	m = (freq / 160 - 8800) * 2;
-	f = (unsigned long long) m + 0x4d1c;
+	f = (unsigned long long)m + 0x4d1c;
 
 	bitmask = 0xc480402c10080000ull;
 	i = 45;
 
-	mutex_lock(&dev->lock);
-
-	outb(0, io);
-	outb(0, io);
-	inb(io + 3);            /* Zoltrix needs to be read to confirm */
+	outb(0, isa->io);
+	outb(0, isa->io);
+	inb(isa->io + 3);            /* Zoltrix needs to be read to confirm */
 
-	outb(0x40, io);
-	outb(0xc0, io);
+	outb(0x40, isa->io);
+	outb(0xc0, isa->io);
 
-	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
+	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31));
 	while (i--) {
 		if ((bitmask & 0x8000000000000000ull) != 0) {
-			outb(0x80, io);
+			outb(0x80, isa->io);
 			udelay(50);
-			outb(0x00, io);
+			outb(0x00, isa->io);
 			udelay(50);
-			outb(0x80, io);
+			outb(0x80, isa->io);
 			udelay(50);
 		} else {
-			outb(0xc0, io);
+			outb(0xc0, isa->io);
 			udelay(50);
-			outb(0x40, io);
+			outb(0x40, isa->io);
 			udelay(50);
-			outb(0xc0, io);
+			outb(0xc0, isa->io);
 			udelay(50);
 		}
 		bitmask *= 2;
 	}
 	/* termination sequence */
-	outb(0x80, io);
-	outb(0xc0, io);
-	outb(0x40, io);
+	outb(0x80, isa->io);
+	outb(0xc0, isa->io);
+	outb(0x40, isa->io);
 	udelay(1000);
-	inb(io+2);
-
+	inb(isa->io + 2);
 	udelay(1000);
 
-	if (dev->muted)
-	{
-		outb(0, io);
-		outb(0, io);
-		inb(io + 3);
-		udelay(1000);
-	}
-
-	mutex_unlock(&dev->lock);
-
-	if(!dev->muted)
-	{
-		zol_setvol(dev, dev->curvol);
-	}
-	return 0;
+	return zoltrix_s_mute_volume(isa, zol->muted, zol->curvol);
 }
 
 /* Get signal strength */
-
-static int zol_getsigstr(struct zol_device *dev)
+static u32 zoltrix_g_rxsubchans(struct radio_isa_card *isa)
 {
+	struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
 	int a, b;
 
-	mutex_lock(&dev->lock);
-	outb(0x00, io);         /* This stuff I found to do nothing */
-	outb(dev->curvol, io);
+	outb(0x00, isa->io);         /* This stuff I found to do nothing */
+	outb(zol->curvol, isa->io);
 	msleep(20);
 
-	a = inb(io);
+	a = inb(isa->io);
 	msleep(10);
-	b = inb(io);
-
-	mutex_unlock(&dev->lock);
+	b = inb(isa->io);
 
-	if (a != b)
-		return (0);
-
-	if ((a == 0xcf) || (a == 0xdf)  /* I found this out by playing */
-		|| (a == 0xef))       /* with a binary scanner on the card io */
-		return (1);
-	return (0);
+	return (a == b && a == 0xcf) ?
+		V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 }
 
-static int zol_is_stereo (struct zol_device *dev)
+static u32 zoltrix_g_signal(struct radio_isa_card *isa)
 {
-	int x1, x2;
-
-	mutex_lock(&dev->lock);
+	struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
+	int a, b;
 
-	outb(0x00, io);
-	outb(dev->curvol, io);
+	outb(0x00, isa->io);         /* This stuff I found to do nothing */
+	outb(zol->curvol, isa->io);
 	msleep(20);
 
-	x1 = inb(io);
+	a = inb(isa->io);
 	msleep(10);
-	x2 = inb(io);
-
-	mutex_unlock(&dev->lock);
+	b = inb(isa->io);
 
-	if ((x1 == x2) && (x1 == 0xcf))
-		return 1;
-	return 0;
-}
-
-static int zol_do_ioctl(struct inode *inode, struct file *file,
-			unsigned int cmd, void *arg)
-{
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = dev->priv;
-
-	switch (cmd) {
-	case VIDIOCGCAP:
-		{
-			struct video_capability *v = arg;
-
-			memset(v,0,sizeof(*v));
-			v->type = VID_TYPE_TUNER;
-			v->channels = 1 + zol->stereo;
-			v->audios = 1;
-			strcpy(v->name, "Zoltrix Radio");
-			return 0;
-		}
-	case VIDIOCGTUNER:
-		{
-			struct video_tuner *v = arg;
-			if (v->tuner)
-				return -EINVAL;
-			strcpy(v->name, "FM");
-			v->rangelow = (int) (88.0 * 16000);
-			v->rangehigh = (int) (108.0 * 16000);
-			v->flags = zol_is_stereo(zol)
-					? VIDEO_TUNER_STEREO_ON : 0;
-			v->flags |= VIDEO_TUNER_LOW;
-			v->mode = VIDEO_MODE_AUTO;
-			v->signal = 0xFFFF * zol_getsigstr(zol);
-			return 0;
-		}
-	case VIDIOCSTUNER:
-		{
-			struct video_tuner *v = arg;
-			if (v->tuner != 0)
-				return -EINVAL;
-			/* Only 1 tuner so no setting needed ! */
-			return 0;
-		}
-	case VIDIOCGFREQ:
-	{
-		unsigned long *freq = arg;
-		*freq = zol->curfreq;
-		return 0;
-	}
-	case VIDIOCSFREQ:
-	{
-		unsigned long *freq = arg;
-		zol->curfreq = *freq;
-		zol_setfreq(zol, zol->curfreq);
+	if (a != b)
 		return 0;
-	}
-	case VIDIOCGAUDIO:
-		{
-			struct video_audio *v = arg;
-			memset(v, 0, sizeof(*v));
-			v->flags |= VIDEO_AUDIO_MUTABLE | VIDEO_AUDIO_VOLUME;
-			v->mode |= zol_is_stereo(zol)
-				? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
-			v->volume = zol->curvol * 4096;
-			v->step = 4096;
-			strcpy(v->name, "Zoltrix Radio");
-			return 0;
-		}
-	case VIDIOCSAUDIO:
-		{
-			struct video_audio *v = arg;
-			if (v->audio)
-				return -EINVAL;
-
-			if (v->flags & VIDEO_AUDIO_MUTE)
-				zol_mute(zol);
-			else {
-				zol_unmute(zol);
-				zol_setvol(zol, v->volume / 4096);
-			}
-
-			if (v->mode & VIDEO_SOUND_STEREO) {
-				zol->stereo = 1;
-				zol_setfreq(zol, zol->curfreq);
-			}
-			if (v->mode & VIDEO_SOUND_MONO) {
-				zol->stereo = 0;
-				zol_setfreq(zol, zol->curfreq);
-			}
-			return 0;
-		}
-	default:
-		return -ENOIOCTLCMD;
-	}
+
+	/* I found this out by playing with a binary scanner on the card io */
+	return (a == 0xcf || a == 0xdf || a == 0xef) ? 0xffff : 0;
 }
 
-static int zol_ioctl(struct inode *inode, struct file *file,
-		     unsigned int cmd, unsigned long arg)
+static int zoltrix_s_stereo(struct radio_isa_card *isa, bool stereo)
 {
-	return video_usercopy(inode, file, cmd, arg, zol_do_ioctl);
+	return zoltrix_s_frequency(isa, isa->freq);
 }
 
-static struct zol_device zoltrix_unit;
-
-static struct file_operations zoltrix_fops =
-{
-	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
-	.ioctl		= zol_ioctl,
-	.compat_ioctl	= v4l_compat_ioctl32,
-	.llseek         = no_llseek,
+static const struct radio_isa_ops zoltrix_ops = {
+	.alloc = zoltrix_alloc,
+	.s_mute_volume = zoltrix_s_mute_volume,
+	.s_frequency = zoltrix_s_frequency,
+	.s_stereo = zoltrix_s_stereo,
+	.g_rxsubchans = zoltrix_g_rxsubchans,
+	.g_signal = zoltrix_g_signal,
 };
 
-static struct video_device zoltrix_radio =
-{
-	.owner		= THIS_MODULE,
-	.name		= "Zoltrix Radio Plus",
-	.type		= VID_TYPE_TUNER,
-	.hardware	= VID_HARDWARE_ZOLTRIX,
-	.fops           = &zoltrix_fops,
+static const int zoltrix_ioports[] = { 0x20c, 0x30c };
+
+static struct radio_isa_driver zoltrix_driver = {
+	.driver = {
+		.match		= radio_isa_match,
+		.probe		= radio_isa_probe,
+		.remove		= radio_isa_remove,
+		.driver		= {
+			.name	= "radio-zoltrix",
+		},
+	},
+	.io_params = io,
+	.radio_nr_params = radio_nr,
+	.io_ports = zoltrix_ioports,
+	.num_of_io_ports = ARRAY_SIZE(zoltrix_ioports),
+	.region_size = 2,
+	.card = "Zoltrix Radio Plus",
+	.ops = &zoltrix_ops,
+	.has_stereo = true,
+	.max_volume = 15,
 };
 
 static int __init zoltrix_init(void)
 {
-	if (io == -1) {
-		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
-		return -EINVAL;
-	}
-	if ((io != 0x20c) && (io != 0x30c)) {
-		printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
-		return -ENXIO;
-	}
-
-	zoltrix_radio.priv = &zoltrix_unit;
-	if (!request_region(io, 2, "zoltrix")) {
-		printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
-		return -EBUSY;
-	}
-
-	if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) == -1)
-	{
-		release_region(io, 2);
-		return -EINVAL;
-	}
-	printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");
-
-	mutex_init(&zoltrix_unit.lock);
-
-	/* mute card - prevents noisy bootups */
-
-	/* this ensures that the volume is all the way down  */
-
-	outb(0, io);
-	outb(0, io);
-	msleep(20);
-	inb(io + 3);
-
-	zoltrix_unit.curvol = 0;
-	zoltrix_unit.stereo = 1;
-
-	return 0;
+	return isa_register_driver(&zoltrix_driver.driver, ZOLTRIX_MAX);
 }
 
-MODULE_AUTHOR("C.van Schaik");
-MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
-module_param(radio_nr, int, 0);
-
-static void __exit zoltrix_cleanup_module(void)
+static void __exit zoltrix_exit(void)
 {
-	video_unregister_device(&zoltrix_radio);
-	release_region(io, 2);
+	isa_unregister_driver(&zoltrix_driver.driver);
 }
 
 module_init(zoltrix_init);
-module_exit(zoltrix_cleanup_module);
+module_exit(zoltrix_exit);