[media] radio-terratec: Convert to radio-isa

Tested with v4l2-compliance, but not with actual hardware. Contact the
linux-media mailinglist if you have this card!

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 59 insertions, 305 deletions

diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
index f2ed9cc3cf3b..2b82dd76a83b 100644
--- a/drivers/media/radio/radio-terratec.c
+++ b/drivers/media/radio/radio-terratec.c
@@ -16,11 +16,7 @@
  *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
  *  Volume Control is done digitally
  *
- *  there is a I2C controlled RDS decoder (SAA6588)  onboard, which i would like to support someday
- *  (as soon i have understand how to get started :)
- *  If you can help me out with that, please contact me!!
- *
- *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
  * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
  */
 
@@ -32,41 +28,21 @@
 #include <linux/io.h>           /* outb, outb_p                 */
 #include <media/v4l2-device.h>
 #include <media/v4l2-ioctl.h>
+#include "radio-isa.h"
 
-MODULE_AUTHOR("R.OFFERMANNS & others");
+MODULE_AUTHOR("R. Offermans & others");
 MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
 MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.3");
-
-#ifndef CONFIG_RADIO_TERRATEC_PORT
-#define CONFIG_RADIO_TERRATEC_PORT 0x590
-#endif
+MODULE_VERSION("0.1.99");
 
-static int io = CONFIG_RADIO_TERRATEC_PORT;
+/* Note: there seems to be only one possible port (0x590), but without
+   hardware this is hard to verify. For now, this is the only one we will
+   support. */
+static int io = 0x590;
 static int radio_nr = -1;
 
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
-module_param(radio_nr, int, 0);
-
-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,
-        },{
-                .id            = V4L2_CID_AUDIO_VOLUME,
-                .name          = "Volume",
-                .minimum       = 0,
-                .maximum       = 0xff,
-                .step          = 1,
-                .default_value = 0xff,
-                .type          = V4L2_CTRL_TYPE_INTEGER,
-        }
-};
+module_param(radio_nr, int, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device number");
 
 #define WRT_DIS         0x00
 #define CLK_OFF         0x00
@@ -76,63 +52,24 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 #define CLK_ON          0x08
 #define WRT_EN          0x10
 
-struct terratec
+static struct radio_isa_card *terratec_alloc(void)
 {
-        struct v4l2_device v4l2_dev;
-        struct video_device vdev;
-        int io;
-        int curvol;
-        unsigned long curfreq;
-        int muted;
-        struct mutex lock;
-};
-
-static struct terratec terratec_card;
-
-/* local things */
+        return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL);
+}
 
-static void tt_write_vol(struct terratec *tt, int volume)
+static int terratec_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
 {
         int i;
 
-        volume = volume + (volume * 32); /* change both channels */
-        mutex_lock(&tt->lock);
+        if (mute)
+                vol = 0;
+        vol = vol + (vol * 32); /* change both channels */
         for (i = 0; i < 8; i++) {
-                if (volume & (0x80 >> i))
-                        outb(0x80, tt->io + 1);
+                if (vol & (0x80 >> i))
+                        outb(0x80, isa->io + 1);
                 else
-                        outb(0x00, tt->io + 1);
-        }
-        mutex_unlock(&tt->lock);
-}
-
-
-
-static void tt_mute(struct terratec *tt)
-{
-        tt->muted = 1;
-        tt_write_vol(tt, 0);
-}
-
-static int tt_setvol(struct terratec *tt, int vol)
-{
-        if (vol == tt->curvol) {        /* requested volume = current */
-                if (tt->muted) {        /* user is unmuting the card  */
-                        tt->muted = 0;
-                        tt_write_vol(tt, vol);  /* enable card */
-                }
-                return 0;
-        }
-
-        if (vol == 0) {                 /* volume = 0 means mute the card */
-                tt_write_vol(tt, 0);    /* "turn off card" by setting vol to 0 */
-                tt->curvol = vol;       /* track the volume state!      */
-                return 0;
+                        outb(0x00, isa->io + 1);
         }
-
-        tt->muted = 0;
-        tt_write_vol(tt, vol);
-        tt->curvol = vol;
         return 0;
 }
 
@@ -140,20 +77,15 @@ static int tt_setvol(struct terratec *tt, int vol)
 /* this is the worst part in this driver */
 /* many more or less strange things are going on here, but hey, it works :) */
 
-static int tt_setfreq(struct terratec *tt, unsigned long freq1)
+static int terratec_s_frequency(struct radio_isa_card *isa, u32 freq)
 {
-        int freq;
         int i;
         int p;
-        int  temp;
+        int temp;
         long rest;
         unsigned char buffer[25];               /* we have to bit shift 25 registers */
 
-        mutex_lock(&tt->lock);
-
-        tt->curfreq = freq1;
-
-        freq = freq1 / 160;                     /* convert the freq. to a nice to handle value */
+        freq = freq / 160;                      /* convert the freq. to a nice to handle value */
         memset(buffer, 0, sizeof(buffer));
 
         rest = freq * 10 + 10700;       /* I once had understood what is going on here */
@@ -175,239 +107,61 @@ static int tt_setfreq(struct terratec *tt, unsigned long freq1)
 
         for (i = 24; i > -1; i--) {     /* bit shift the values to the radiocard */
                 if (buffer[i] == 1) {
-                        outb(WRT_EN | DATA, tt->io);
-                        outb(WRT_EN | DATA | CLK_ON, tt->io);
-                        outb(WRT_EN | DATA, tt->io);
+                        outb(WRT_EN | DATA, isa->io);
+                        outb(WRT_EN | DATA | CLK_ON, isa->io);
+                        outb(WRT_EN | DATA, isa->io);
                 } else {
-                        outb(WRT_EN | 0x00, tt->io);
-                        outb(WRT_EN | 0x00 | CLK_ON, tt->io);
-                }
-        }
-        outb(0x00, tt->io);
-
-        mutex_unlock(&tt->lock);
-
-        return 0;
-}
-
-static int tt_getsigstr(struct terratec *tt)
-{
-        if (inb(tt->io) & 2)    /* bit set = no signal present  */
-                return 0;
-        return 1;               /* signal present               */
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
-                                        struct v4l2_capability *v)
-{
-        strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
-        strlcpy(v->card, "ActiveRadio", sizeof(v->card));
-        strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
-        v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
-        return 0;
-}
-
-static int vidioc_g_tuner(struct file *file, void *priv,
-                                        struct v4l2_tuner *v)
-{
-        struct terratec *tt = video_drvdata(file);
-
-        if (v->index > 0)
-                return -EINVAL;
-
-        strlcpy(v->name, "FM", sizeof(v->name));
-        v->type = V4L2_TUNER_RADIO;
-        v->rangelow = 87 * 16000;
-        v->rangehigh = 108 * 16000;
-        v->rxsubchans = V4L2_TUNER_SUB_MONO;
-        v->capability = V4L2_TUNER_CAP_LOW;
-        v->audmode = V4L2_TUNER_MODE_MONO;
-        v->signal = 0xFFFF * tt_getsigstr(tt);
-        return 0;
-}
-
-static int vidioc_s_tuner(struct file *file, void *priv,
-                                        struct v4l2_tuner *v)
-{
-        return v->index ? -EINVAL : 0;
-}
-
-static int vidioc_s_frequency(struct file *file, void *priv,
-                                        struct v4l2_frequency *f)
-{
-        struct terratec *tt = video_drvdata(file);
-
-        if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
-                return -EINVAL;
-        tt_setfreq(tt, f->frequency);
-        return 0;
-}
-
-static int vidioc_g_frequency(struct file *file, void *priv,
-                                        struct v4l2_frequency *f)
-{
-        struct terratec *tt = video_drvdata(file);
-
-        if (f->tuner != 0)
-                return -EINVAL;
-        f->type = V4L2_TUNER_RADIO;
-        f->frequency = tt->curfreq;
-        return 0;
-}
-
-static int vidioc_queryctrl(struct file *file, void *priv,
-                                        struct v4l2_queryctrl *qc)
-{
-        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;
+                        outb(WRT_EN | 0x00, isa->io);
+                        outb(WRT_EN | 0x00 | CLK_ON, isa->io);
                 }
         }
-        return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
-                                        struct v4l2_control *ctrl)
-{
-        struct terratec *tt = video_drvdata(file);
-
-        switch (ctrl->id) {
-        case V4L2_CID_AUDIO_MUTE:
-                if (tt->muted)
-                        ctrl->value = 1;
-                else
-                        ctrl->value = 0;
-                return 0;
-        case V4L2_CID_AUDIO_VOLUME:
-                ctrl->value = tt->curvol * 6554;
-                return 0;
-        }
-        return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
-                                        struct v4l2_control *ctrl)
-{
-        struct terratec *tt = video_drvdata(file);
-
-        switch (ctrl->id) {
-        case V4L2_CID_AUDIO_MUTE:
-                if (ctrl->value)
-                        tt_mute(tt);
-                else
-                        tt_setvol(tt,tt->curvol);
-                return 0;
-        case V4L2_CID_AUDIO_VOLUME:
-                tt_setvol(tt,ctrl->value);
-                return 0;
-        }
-        return -EINVAL;
-}
-
-static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
-{
-        *i = 0;
-        return 0;
-}
-
-static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
-{
-        return i ? -EINVAL : 0;
-}
-
-static int vidioc_g_audio(struct file *file, void *priv,
-                                        struct v4l2_audio *a)
-{
-        a->index = 0;
-        strlcpy(a->name, "Radio", sizeof(a->name));
-        a->capability = V4L2_AUDCAP_STEREO;
+        outb(0x00, isa->io);
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *priv,
-                                        struct v4l2_audio *a)
+static u32 terratec_g_signal(struct radio_isa_card *isa)
 {
-        return a->index ? -EINVAL : 0;
+        /* bit set = no signal present  */
+        return (inb(isa->io) & 2) ? 0 : 0xffff;
 }
 
-static const struct v4l2_file_operations terratec_fops = {
-        .owner          = THIS_MODULE,
-        .unlocked_ioctl = video_ioctl2,
+static const struct radio_isa_ops terratec_ops = {
+        .alloc = terratec_alloc,
+        .s_mute_volume = terratec_s_mute_volume,
+        .s_frequency = terratec_s_frequency,
+        .g_signal = terratec_g_signal,
 };
 
-static const struct v4l2_ioctl_ops terratec_ioctl_ops = {
-        .vidioc_querycap    = vidioc_querycap,
-        .vidioc_g_tuner     = vidioc_g_tuner,
-        .vidioc_s_tuner     = vidioc_s_tuner,
-        .vidioc_g_frequency = vidioc_g_frequency,
-        .vidioc_s_frequency = vidioc_s_frequency,
-        .vidioc_queryctrl   = vidioc_queryctrl,
-        .vidioc_g_ctrl      = vidioc_g_ctrl,
-        .vidioc_s_ctrl      = vidioc_s_ctrl,
-        .vidioc_g_audio     = vidioc_g_audio,
-        .vidioc_s_audio     = vidioc_s_audio,
-        .vidioc_g_input     = vidioc_g_input,
-        .vidioc_s_input     = vidioc_s_input,
+static const int terratec_ioports[] = { 0x590 };
+
+static struct radio_isa_driver terratec_driver = {
+        .driver = {
+                .match          = radio_isa_match,
+                .probe          = radio_isa_probe,
+                .remove         = radio_isa_remove,
+                .driver         = {
+                        .name   = "radio-terratec",
+                },
+        },
+        .io_params = &io,
+        .radio_nr_params = &radio_nr,
+        .io_ports = terratec_ioports,
+        .num_of_io_ports = ARRAY_SIZE(terratec_ioports),
+        .region_size = 2,
+        .card = "TerraTec ActiveRadio",
+        .ops = &terratec_ops,
+        .has_stereo = true,
+        .max_volume = 10,
 };
 
 static int __init terratec_init(void)
 {
-        struct terratec *tt = &terratec_card;
-        struct v4l2_device *v4l2_dev = &tt->v4l2_dev;
-        int res;
-
-        strlcpy(v4l2_dev->name, "terratec", sizeof(v4l2_dev->name));
-        tt->io = io;
-        if (tt->io == -1) {
-                v4l2_err(v4l2_dev, "you must set an I/O address with io=0x590 or 0x591\n");
-                return -EINVAL;
-        }
-        if (!request_region(tt->io, 2, "terratec")) {
-                v4l2_err(v4l2_dev, "port 0x%x already in use\n", io);
-                return -EBUSY;
-        }
-
-        res = v4l2_device_register(NULL, v4l2_dev);
-        if (res < 0) {
-                release_region(tt->io, 2);
-                v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
-                return res;
-        }
-
-        strlcpy(tt->vdev.name, v4l2_dev->name, sizeof(tt->vdev.name));
-        tt->vdev.v4l2_dev = v4l2_dev;
-        tt->vdev.fops = &terratec_fops;
-        tt->vdev.ioctl_ops = &terratec_ioctl_ops;
-        tt->vdev.release = video_device_release_empty;
-        video_set_drvdata(&tt->vdev, tt);
-
-        mutex_init(&tt->lock);
-
-        /* mute card - prevents noisy bootups */
-        tt_write_vol(tt, 0);
-
-        if (video_register_device(&tt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
-                v4l2_device_unregister(&tt->v4l2_dev);
-                release_region(tt->io, 2);
-                return -EINVAL;
-        }
-
-        v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver.\n");
-        return 0;
+        return isa_register_driver(&terratec_driver.driver, 1);
 }
 
 static void __exit terratec_exit(void)
 {
-        struct terratec *tt = &terratec_card;
-        struct v4l2_device *v4l2_dev = &tt->v4l2_dev;
-
-        video_unregister_device(&tt->vdev);
-        v4l2_device_unregister(&tt->v4l2_dev);
-        release_region(tt->io, 2);
-        v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver unloaded.\n");
+        isa_unregister_driver(&terratec_driver.driver);
 }
 
 module_init(terratec_init);