3 files changed, 289 insertions, 0 deletions

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index a87a477c87f2..b134553eb3b5 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -195,6 +195,24 @@ config RADIO_MAESTRO
           To compile this driver as a module, choose M here: the
           module will be called radio-maestro.
 
+config RADIO_MIROPCM20
+        tristate "miroSOUND PCM20 radio"
+        depends on ISA && VIDEO_V4L2
+        select SND_MIRO
+        ---help---
+          Choose Y here if you have this FM radio card. You also need to enable
+          the ALSA sound system. This choice automatically selects the ALSA
+          sound card driver "Miro miroSOUND PCM1pro/PCM12/PCM20radio" as this
+          is required for the radio-miropcm20.
+
+          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>.
+
+          To compile this driver as a module, choose M here: the
+          module will be called radio-miropcm20.
+
 config RADIO_SF16FMI
         tristate "SF16FMI Radio"
         depends on ISA && VIDEO_V4L2
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index 2a1be3bf4f7c..8a63d543ae41 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
 obj-$(CONFIG_I2C_SI4713) += si4713-i2c.o
 obj-$(CONFIG_RADIO_SI4713) += radio-si4713.o
 obj-$(CONFIG_RADIO_MAESTRO) += radio-maestro.o
+obj-$(CONFIG_RADIO_MIROPCM20) += radio-miropcm20.o
 obj-$(CONFIG_USB_DSBR) += dsbr100.o
 obj-$(CONFIG_RADIO_SI470X) += si470x/
 obj-$(CONFIG_USB_MR800) += radio-mr800.o
diff --git a/drivers/media/radio/radio-miropcm20.c b/drivers/media/radio/radio-miropcm20.c
new file mode 100644
index 000000000000..4ff885445fd4
--- /dev/null
+++ b/drivers/media/radio/radio-miropcm20.c
@@ -0,0 +1,270 @@
+/* Miro PCM20 radio driver for Linux radio support
+ * (c) 1998 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl>
+ * Thanks to Norberto Pellici for the ACI device interface specification
+ * The API part is based on the radiotrack driver by M. Kirkwood
+ * This driver relies on the aci mixer provided by the snd-miro
+ * ALSA driver.
+ * Look there for further info...
+ */
+
+/* What ever you think about the ACI, version 0x07 is not very well!
+ * I can't get frequency, 'tuner status', 'tuner flags' or mute/mono
+ * conditions...                Robert
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <sound/aci.h>
+
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
+
+static int mono;
+module_param(mono, bool, 0);
+MODULE_PARM_DESC(mono, "Force tuner into mono mode.");
+
+struct pcm20 {
+        struct v4l2_device v4l2_dev;
+        struct video_device vdev;
+        unsigned long freq;
+        int muted;
+        struct snd_miro_aci *aci;
+};
+
+static struct pcm20 pcm20_card = {
+        .freq   = 87*16000,
+        .muted  = 1,
+};
+
+static int pcm20_mute(struct pcm20 *dev, unsigned char mute)
+{
+        dev->muted = mute;
+        return snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, mute, -1);
+}
+
+static int pcm20_stereo(struct pcm20 *dev, unsigned char stereo)
+{
+        return snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, !stereo, -1);
+}
+
+static int pcm20_setfreq(struct pcm20 *dev, unsigned long freq)
+{
+        unsigned char freql;
+        unsigned char freqh;
+        struct snd_miro_aci *aci = dev->aci;
+
+        dev->freq = freq;
+
+        freq /= 160;
+        if (!(aci->aci_version == 0x07 || aci->aci_version >= 0xb0))
+                freq /= 10;  /* I don't know exactly which version
+                              * needs this hack */
+        freql = freq & 0xff;
+        freqh = freq >> 8;
+
+        pcm20_stereo(dev, !mono);
+        return snd_aci_cmd(aci, ACI_WRITE_TUNE, freql, freqh);
+}
+
+static const struct v4l2_file_operations pcm20_fops = {
+        .owner          = THIS_MODULE,
+        .ioctl          = video_ioctl2,
+};
+
+static int vidioc_querycap(struct file *file, void *priv,
+                                struct v4l2_capability *v)
+{
+        strlcpy(v->driver, "Miro PCM20", sizeof(v->driver));
+        strlcpy(v->card, "Miro PCM20", sizeof(v->card));
+        strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
+        v->version = 0x1;
+        v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+        return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+                                struct v4l2_tuner *v)
+{
+        if (v->index)   /* Only 1 tuner */
+                return -EINVAL;
+        strlcpy(v->name, "FM", sizeof(v->name));
+        v->type = V4L2_TUNER_RADIO;
+        v->rangelow = 87*16000;
+        v->rangehigh = 108*16000;
+        v->signal = 0xffff;
+        v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+        v->capability = V4L2_TUNER_CAP_LOW;
+        v->audmode = V4L2_TUNER_MODE_MONO;
+        return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+                                struct v4l2_tuner *v)
+{
+        return v->index ? -EINVAL : 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+                                struct v4l2_frequency *f)
+{
+        struct pcm20 *dev = video_drvdata(file);
+
+        if (f->tuner != 0)
+                return -EINVAL;
+
+        f->type = V4L2_TUNER_RADIO;
+        f->frequency = dev->freq;
+        return 0;
+}
+
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+                                struct v4l2_frequency *f)
+{
+        struct pcm20 *dev = video_drvdata(file);
+
+        if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
+                return -EINVAL;
+
+        dev->freq = f->frequency;
+        pcm20_setfreq(dev, f->frequency);
+        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);
+        }
+        return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+                                struct v4l2_control *ctrl)
+{
+        struct pcm20 *dev = video_drvdata(file);
+
+        switch (ctrl->id) {
+        case V4L2_CID_AUDIO_MUTE:
+                ctrl->value = dev->muted;
+                break;
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+                                struct v4l2_control *ctrl)
+{
+        struct pcm20 *dev = video_drvdata(file);
+
+        switch (ctrl->id) {
+        case V4L2_CID_AUDIO_MUTE:
+                pcm20_mute(dev, ctrl->value);
+                break;
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+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_ioctl_ops pcm20_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 int __init pcm20_init(void)
+{
+        struct pcm20 *dev = &pcm20_card;
+        struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+        int res;
+
+        dev->aci = snd_aci_get_aci();
+        if (dev->aci == NULL) {
+                v4l2_err(v4l2_dev,
+                         "you must load the snd-miro driver first!\n");
+                return -ENODEV;
+        }
+        strlcpy(v4l2_dev->name, "miropcm20", sizeof(v4l2_dev->name));
+
+
+        res = v4l2_device_register(NULL, v4l2_dev);
+        if (res < 0) {
+                v4l2_err(v4l2_dev, "could not register v4l2_device\n");
+                return -EINVAL;
+        }
+
+        strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
+        dev->vdev.v4l2_dev = v4l2_dev;
+        dev->vdev.fops = &pcm20_fops;
+        dev->vdev.ioctl_ops = &pcm20_ioctl_ops;
+        dev->vdev.release = video_device_release_empty;
+        video_set_drvdata(&dev->vdev, dev);
+
+        if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0)
+                goto fail;
+
+        v4l2_info(v4l2_dev, "Mirosound PCM20 Radio tuner\n");
+        return 0;
+fail:
+        v4l2_device_unregister(v4l2_dev);
+        return -EINVAL;
+}
+
+MODULE_AUTHOR("Ruurd Reitsma, Krzysztof Helt");
+MODULE_DESCRIPTION("A driver for the Miro PCM20 radio card.");
+MODULE_LICENSE("GPL");
+
+static void __exit pcm20_cleanup(void)
+{
+        struct pcm20 *dev = &pcm20_card;
+
+        video_unregister_device(&dev->vdev);
+        v4l2_device_unregister(&dev->v4l2_dev);
+}
+
+module_init(pcm20_init);
+module_exit(pcm20_cleanup);