V4L/DVB (4353): V4L2 conversion: radio-sf16fmi

Driver conversion to V4L2 API.
Require some testing, since this obsolete hardware is not
common those days.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/radio/Kconfig

@@ -208,7 +208,7 @@ config RADIO_MIROPCM20_RDS
 
 config RADIO_SF16FMI
 	tristate "SF16FMI Radio"
-	depends on ISA && VIDEO_V4L1
+	depends on ISA && VIDEO_V4L2
 	---help---
 	  Choose Y here if you have one of these FM radio cards.  If you
 	  compile the driver into the kernel and your card is not PnP one, you

drivers/media/radio/radio-sf16fmi.c

@@ -13,6 +13,7 @@
  *  No volume control - only mute/unmute - you have to use line volume
  *  control on SB-part of SF16FMI
  *
+ * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
  */
 
 #include <linux/kernel.h>	/* __setup			*/
@@ -20,13 +21,26 @@
 #include <linux/init.h>		/* Initdata			*/
 #include <linux/ioport.h>	/* request_region		*/
 #include <linux/delay.h>	/* udelay			*/
-#include <linux/videodev.h>	/* kernel radio structs		*/
+#include <linux/videodev2.h>	/* kernel radio structs		*/
 #include <media/v4l2-common.h>
 #include <linux/isapnp.h>
 #include <asm/io.h>		/* outb, outb_p			*/
 #include <asm/uaccess.h>	/* copy to/from user		*/
 #include <linux/mutex.h>
 
+#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+
+static struct v4l2_queryctrl radio_qctrl[] = {
+	{
+		.id            = V4L2_CID_AUDIO_MUTE,
+		.name          = "Mute",
+		.minimum       = 0,
+		.maximum       = 1,
+		.default_value = 1,
+		.type          = V4L2_CTRL_TYPE_BOOLEAN,
+	}
+};
+
 struct fmi_device
 {
 	int port;
@@ -123,93 +137,122 @@ static int fmi_do_ioctl(struct inode *inode, struct file *file,
 
 	switch(cmd)
 	{
-		case VIDIOCGCAP:
+		case VIDIOC_QUERYCAP:
 		{
-			struct video_capability *v = arg;
+			struct v4l2_capability *v = arg;
 			memset(v,0,sizeof(*v));
-			strcpy(v->name, "SF16-FMx radio");
-			v->type=VID_TYPE_TUNER;
-			v->channels=1;
-			v->audios=1;
+			strlcpy(v->driver, "radio-sf16fmi", sizeof (v->driver));
+			strlcpy(v->card, "SF16-FMx radio", sizeof (v->card));
+			sprintf(v->bus_info,"ISA");
+			v->version = RADIO_VERSION;
+			v->capabilities = V4L2_CAP_TUNER;
+
 			return 0;
 		}
-		case VIDIOCGTUNER:
+		case VIDIOC_G_TUNER:
 		{
-			struct video_tuner *v = arg;
+			struct v4l2_tuner *v = arg;
 			int mult;
 
-			if(v->tuner)	/* Only 1 tuner */
+			if (v->index > 0)
 				return -EINVAL;
+
+			memset(v,0,sizeof(*v));
 			strcpy(v->name, "FM");
-			mult = (fmi->flags & VIDEO_TUNER_LOW) ? 1 : 1000;
+			v->type = V4L2_TUNER_RADIO;
+
+			mult = (fmi->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
 			v->rangelow = RSF16_MINFREQ/mult;
 			v->rangehigh = RSF16_MAXFREQ/mult;
-			v->flags=fmi->flags;
-			v->mode=VIDEO_MODE_AUTO;
+			v->rxsubchans =V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO;
+			v->capability=fmi->flags;
+			v->audmode = V4L2_TUNER_MODE_STEREO;
 			v->signal = fmi_getsigstr(fmi);
+
 			return 0;
 		}
-		case VIDIOCSTUNER:
+		case VIDIOC_S_TUNER:
 		{
-			struct video_tuner *v = arg;
-			if(v->tuner!=0)
+			struct v4l2_tuner *v = arg;
+
+			if (v->index > 0)
 				return -EINVAL;
-			fmi->flags = v->flags & VIDEO_TUNER_LOW;
-			/* Only 1 tuner so no setting needed ! */
-			return 0;
-		}
-		case VIDIOCGFREQ:
-		{
-			unsigned long *freq = arg;
-			*freq = fmi->curfreq;
-			if (!(fmi->flags & VIDEO_TUNER_LOW))
-			    *freq /= 1000;
+
 			return 0;
 		}
-		case VIDIOCSFREQ:
+		case VIDIOC_S_FREQUENCY:
 		{
-			unsigned long *freq = arg;
-			if (!(fmi->flags & VIDEO_TUNER_LOW))
-				*freq *= 1000;
-			if (*freq < RSF16_MINFREQ || *freq > RSF16_MAXFREQ )
+			struct v4l2_frequency *f = arg;
+
+			if (!(fmi->flags & V4L2_TUNER_CAP_LOW))
+				f->frequency *= 1000;
+			if (f->frequency < RSF16_MINFREQ ||
+					f->frequency > RSF16_MAXFREQ )
 				return -EINVAL;
 			/*rounding in steps of 800 to match th freq
 			  that will be used */
-			fmi->curfreq = (*freq/800)*800;
+			fmi->curfreq = (f->frequency/800)*800;
 			fmi_setfreq(fmi);
+
 			return 0;
 		}
-		case VIDIOCGAUDIO:
+		case VIDIOC_G_FREQUENCY:
 		{
-			struct video_audio *v = arg;
-			memset(v,0,sizeof(*v));
-			v->flags=( (!fmi->curvol)*VIDEO_AUDIO_MUTE | VIDEO_AUDIO_MUTABLE);
-			strcpy(v->name, "Radio");
-			v->mode=VIDEO_SOUND_STEREO;
+			struct v4l2_frequency *f = arg;
+
+			f->type = V4L2_TUNER_RADIO;
+			f->frequency = fmi->curfreq;
+			if (!(fmi->flags & V4L2_TUNER_CAP_LOW))
+				f->frequency /= 1000;
+
 			return 0;
 		}
-		case VIDIOCSAUDIO:
+		case VIDIOC_QUERYCTRL:
 		{
-			struct video_audio *v = arg;
-			if(v->audio)
+			struct v4l2_queryctrl *qc = arg;
+			int i;
+
+			for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
+				if (qc->id && qc->id == radio_qctrl[i].id) {
+					memcpy(qc, &(radio_qctrl[i]),
+								sizeof(*qc));
+					return (0);
+				}
+			}
 			return -EINVAL;
-			fmi->curvol= v->flags&VIDEO_AUDIO_MUTE ? 0 : 1;
-			fmi->curvol ?
-				fmi_unmute(fmi->port) : fmi_mute(fmi->port);
-			return 0;
 		}
-		case VIDIOCGUNIT:
+		case VIDIOC_G_CTRL:
 		{
-			struct video_unit *v = arg;
-			v->video=VIDEO_NO_UNIT;
-			v->vbi=VIDEO_NO_UNIT;
-			v->radio=dev->minor;
-			v->audio=0; /* How do we find out this??? */
-			v->teletext=VIDEO_NO_UNIT;
-			return 0;
+			struct v4l2_control *ctrl= arg;
+
+			switch (ctrl->id) {
+				case V4L2_CID_AUDIO_MUTE:
+					ctrl->value=fmi->curvol;
+					return (0);
+			}
+			return -EINVAL;
+		}
+		case VIDIOC_S_CTRL:
+		{
+			struct v4l2_control *ctrl= arg;
+
+			switch (ctrl->id) {
+				case V4L2_CID_AUDIO_MUTE:
+				{
+					if (ctrl->value)
+						fmi_mute(fmi->port);
+					else
+						fmi_unmute(fmi->port);
+
+					fmi->curvol=ctrl->value;
+					return (0);
+				}
+			}
+			return -EINVAL;
 		}
 		default:
-			return -ENOIOCTLCMD;
+			return v4l_compat_translate_ioctl(inode,file,cmd,arg,
+							  fmi_do_ioctl);
 	}
 }
 
@@ -235,7 +278,7 @@ static struct video_device fmi_radio=
 	.owner		= THIS_MODULE,
 	.name		= "SF16FMx radio",
 	.type		= VID_TYPE_TUNER,
-	.hardware	= VID_HARDWARE_SF16MI,
+	.hardware	= 0,
 	.fops           = &fmi_fops,
 };
 
@@ -294,7 +337,7 @@ static int __init fmi_init(void)
 	fmi_unit.port = io;
 	fmi_unit.curvol = 0;
 	fmi_unit.curfreq = 0;
-	fmi_unit.flags = VIDEO_TUNER_LOW;
+	fmi_unit.flags = V4L2_TUNER_CAP_LOW;
 	fmi_radio.priv = &fmi_unit;
 
 	mutex_init(&lock);