[media] radio-rtrack2: 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>

2 files changed, 69 insertions, 271 deletions

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 06a8c7a53556..f76cbbc9a784 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -233,14 +233,14 @@ config RADIO_RTRACK_PORT
 config RADIO_RTRACK2
         tristate "AIMSlab RadioTrack II support"
         depends on ISA && VIDEO_V4L2
+        select RADIO_ISA
         ---help---
           Choose Y here if you have this FM radio card, and then fill in the
           port address below.
 
-          In order to control your radio card, you will need to use programs
-          that are compatible with the Video For Linux API.  Information on
-          this API and pointers to "v4l" programs may be found at
-          <file:Documentation/video4linux/API.html>.
+          Note: this driver hasn't been tested since a long time due to lack
+          of hardware. If you have this hardware, then please contact the
+          linux-media mailinglist.
 
           To compile this driver as a module, choose M here: the
           module will be called radio-rtrack2.
diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c
index 3628be617ee9..b275c5d0fe9a 100644
--- a/drivers/media/radio/radio-rtrack2.c
+++ b/drivers/media/radio/radio-rtrack2.c
@@ -1,11 +1,12 @@
-/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
+/*
+ * RadioTrack II driver
+ * Copyright 1998 Ben Pfaff
  *
  * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
  * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk>
  * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
  *
- * TODO: Allow for more than one of these foolish entities :-)
- *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
  * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
  */
 
@@ -18,323 +19,120 @@
 #include <linux/io.h>           /* outb, outb_p                 */
 #include <media/v4l2-device.h>
 #include <media/v4l2-ioctl.h>
+#include "radio-isa.h"
 
 MODULE_AUTHOR("Ben Pfaff");
 MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
 MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.3");
+MODULE_VERSION("0.1.99");
 
 #ifndef CONFIG_RADIO_RTRACK2_PORT
 #define CONFIG_RADIO_RTRACK2_PORT -1
 #endif
 
-static int io = CONFIG_RADIO_RTRACK2_PORT;
-static int radio_nr = -1;
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
-module_param(radio_nr, int, 0);
-
-struct rtrack2
-{
-        struct v4l2_device v4l2_dev;
-        struct video_device vdev;
-        int io;
-        unsigned long curfreq;
-        int muted;
-        struct mutex lock;
-};
+#define RTRACK2_MAX 2
 
-static struct rtrack2 rtrack2_card;
+static int io[RTRACK2_MAX] = { [0] = CONFIG_RADIO_RTRACK2_PORT,
+                              [1 ... (RTRACK2_MAX - 1)] = -1 };
+static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 };
 
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
 
-/* local things */
-
-static void rt_mute(struct rtrack2 *dev)
-{
-        if (dev->muted)
-                return;
-        mutex_lock(&dev->lock);
-        outb(1, dev->io);
-        mutex_unlock(&dev->lock);
-        dev->muted = 1;
-}
-
-static void rt_unmute(struct rtrack2 *dev)
+static struct radio_isa_card *rtrack2_alloc(void)
 {
-        if(dev->muted == 0)
-                return;
-        mutex_lock(&dev->lock);
-        outb(0, dev->io);
-        mutex_unlock(&dev->lock);
-        dev->muted = 0;
+        return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL);
 }
 
-static void zero(struct rtrack2 *dev)
+static void zero(struct radio_isa_card *isa)
 {
-        outb_p(1, dev->io);
-        outb_p(3, dev->io);
-        outb_p(1, dev->io);
+        outb_p(1, isa->io);
+        outb_p(3, isa->io);
+        outb_p(1, isa->io);
 }
 
-static void one(struct rtrack2 *dev)
+static void one(struct radio_isa_card *isa)
 {
-        outb_p(5, dev->io);
-        outb_p(7, dev->io);
-        outb_p(5, dev->io);
+        outb_p(5, isa->io);
+        outb_p(7, isa->io);
+        outb_p(5, isa->io);
 }
 
-static int rt_setfreq(struct rtrack2 *dev, unsigned long freq)
+static int rtrack2_s_frequency(struct radio_isa_card *isa, u32 freq)
 {
         int i;
 
-        mutex_lock(&dev->lock);
-        dev->curfreq = freq;
         freq = freq / 200 + 856;
 
-        outb_p(0xc8, dev->io);
-        outb_p(0xc9, dev->io);
-        outb_p(0xc9, dev->io);
+        outb_p(0xc8, isa->io);
+        outb_p(0xc9, isa->io);
+        outb_p(0xc9, isa->io);
 
         for (i = 0; i < 10; i++)
-                zero(dev);
+                zero(isa);
 
         for (i = 14; i >= 0; i--)
                 if (freq & (1 << i))
-                        one(dev);
+                        one(isa);
                 else
-                        zero(dev);
-
-        outb_p(0xc8, dev->io);
-        if (!dev->muted)
-                outb_p(0, dev->io);
-
-        mutex_unlock(&dev->lock);
-        return 0;
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
-                                struct v4l2_capability *v)
-{
-        strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
-        strlcpy(v->card, "RadioTrack II", sizeof(v->card));
-        strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
-        v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
-        return 0;
-}
+                        zero(isa);
 
-static int vidioc_s_tuner(struct file *file, void *priv,
-                                struct v4l2_tuner *v)
-{
-        return v->index ? -EINVAL : 0;
-}
-
-static int rt_getsigstr(struct rtrack2 *dev)
-{
-        int sig = 1;
-
-        mutex_lock(&dev->lock);
-        if (inb(dev->io) & 2)   /* bit set = no signal present  */
-                sig = 0;
-        mutex_unlock(&dev->lock);
-        return sig;
-}
-
-static int vidioc_g_tuner(struct file *file, void *priv,
-                                struct v4l2_tuner *v)
-{
-        struct rtrack2 *rt = video_drvdata(file);
-
-        if (v->index > 0)
-                return -EINVAL;
-
-        strlcpy(v->name, "FM", sizeof(v->name));
-        v->type = V4L2_TUNER_RADIO;
-        v->rangelow = 88 * 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 * rt_getsigstr(rt);
+        outb_p(0xc8, isa->io);
+        if (!v4l2_ctrl_g_ctrl(isa->mute))
+                outb_p(0, isa->io);
         return 0;
 }
 
-static int vidioc_s_frequency(struct file *file, void *priv,
-                                struct v4l2_frequency *f)
+static u32 rtrack2_g_signal(struct radio_isa_card *isa)
 {
-        struct rtrack2 *rt = video_drvdata(file);
-
-        if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
-                return -EINVAL;
-        rt_setfreq(rt, f->frequency);
-        return 0;
+        /* bit set = no signal present  */
+        return (inb(isa->io) & 2) ? 0 : 0xffff;
 }
 
-static int vidioc_g_frequency(struct file *file, void *priv,
-                                struct v4l2_frequency *f)
+static int rtrack2_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
 {
-        struct rtrack2 *rt = video_drvdata(file);
-
-        if (f->tuner != 0)
-                return -EINVAL;
-        f->type = V4L2_TUNER_RADIO;
-        f->frequency = rt->curfreq;
+        outb(mute, isa->io);
         return 0;
 }
 
-static int vidioc_queryctrl(struct file *file, void *priv,
-                                struct v4l2_queryctrl *qc)
-{
-        switch (qc->id) {
-        case V4L2_CID_AUDIO_MUTE:
-                return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
-        case V4L2_CID_AUDIO_VOLUME:
-                return v4l2_ctrl_query_fill(qc, 0, 65535, 65535, 65535);
-        }
-        return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
-                                struct v4l2_control *ctrl)
-{
-        struct rtrack2 *rt = video_drvdata(file);
-
-        switch (ctrl->id) {
-        case V4L2_CID_AUDIO_MUTE:
-                ctrl->value = rt->muted;
-                return 0;
-        case V4L2_CID_AUDIO_VOLUME:
-                if (rt->muted)
-                        ctrl->value = 0;
-                else
-                        ctrl->value = 65535;
-                return 0;
-        }
-        return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
-                                struct v4l2_control *ctrl)
-{
-        struct rtrack2 *rt = video_drvdata(file);
-
-        switch (ctrl->id) {
-        case V4L2_CID_AUDIO_MUTE:
-                if (ctrl->value)
-                        rt_mute(rt);
-                else
-                        rt_unmute(rt);
-                return 0;
-        case V4L2_CID_AUDIO_VOLUME:
-                if (ctrl->value)
-                        rt_unmute(rt);
-                else
-                        rt_mute(rt);
-                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;
-        return 0;
-}
-
-static int vidioc_s_audio(struct file *file, void *priv,
-                                struct v4l2_audio *a)
-{
-        return a->index ? -EINVAL : 0;
-}
-
-static const struct v4l2_file_operations rtrack2_fops = {
-        .owner          = THIS_MODULE,
-        .unlocked_ioctl = video_ioctl2,
+static const struct radio_isa_ops rtrack2_ops = {
+        .alloc = rtrack2_alloc,
+        .s_mute_volume = rtrack2_s_mute_volume,
+        .s_frequency = rtrack2_s_frequency,
+        .g_signal = rtrack2_g_signal,
 };
 
-static const struct v4l2_ioctl_ops rtrack2_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 rtrack2_ioports[] = { 0x20f, 0x30f };
+
+static struct radio_isa_driver rtrack2_driver = {
+        .driver = {
+                .match          = radio_isa_match,
+                .probe          = radio_isa_probe,
+                .remove         = radio_isa_remove,
+                .driver         = {
+                        .name   = "radio-rtrack2",
+                },
+        },
+        .io_params = io,
+        .radio_nr_params = radio_nr,
+        .io_ports = rtrack2_ioports,
+        .num_of_io_ports = ARRAY_SIZE(rtrack2_ioports),
+        .region_size = 4,
+        .card = "AIMSlab RadioTrack II",
+        .ops = &rtrack2_ops,
+        .has_stereo = true,
 };
 
 static int __init rtrack2_init(void)
 {
-        struct rtrack2 *dev = &rtrack2_card;
-        struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
-        int res;
-
-        strlcpy(v4l2_dev->name, "rtrack2", sizeof(v4l2_dev->name));
-        dev->io = io;
-        if (dev->io == -1) {
-                v4l2_err(v4l2_dev, "You must set an I/O address with io=0x20c or io=0x30c\n");
-                return -EINVAL;
-        }
-        if (!request_region(dev->io, 4, "rtrack2")) {
-                v4l2_err(v4l2_dev, "port 0x%x already in use\n", dev->io);
-                return -EBUSY;
-        }
-
-        res = v4l2_device_register(NULL, v4l2_dev);
-        if (res < 0) {
-                release_region(dev->io, 4);
-                v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
-                return res;
-        }
-
-        strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
-        dev->vdev.v4l2_dev = v4l2_dev;
-        dev->vdev.fops = &rtrack2_fops;
-        dev->vdev.ioctl_ops = &rtrack2_ioctl_ops;
-        dev->vdev.release = video_device_release_empty;
-        video_set_drvdata(&dev->vdev, dev);
-
-        /* mute card - prevents noisy bootups */
-        outb(1, dev->io);
-        dev->muted = 1;
-
-        mutex_init(&dev->lock);
-        if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
-                v4l2_device_unregister(v4l2_dev);
-                release_region(dev->io, 4);
-                return -EINVAL;
-        }
-
-        v4l2_info(v4l2_dev, "AIMSlab Radiotrack II card driver.\n");
-
-        return 0;
+        return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX);
 }
 
 static void __exit rtrack2_exit(void)
 {
-        struct rtrack2 *dev = &rtrack2_card;
-
-        video_unregister_device(&dev->vdev);
-        v4l2_device_unregister(&dev->v4l2_dev);
-        release_region(dev->io, 4);
+        isa_unregister_driver(&rtrack2_driver.driver);
 }
 
 module_init(rtrack2_init);