At Fri, 27 Nov 2009 11:24:13 +0100,
Krzysztof Helt wrote:
>
> From: Krzysztof Helt <krzysztof.h1@xxxxx>
>
> This is recreated driver for the FM module found on Miro
> PCM20 sound cards. This driver was removed around the 2.6.2x
> kernels because it relied on the removed OSS module. Now, it
> uses a current ALSA module (snd-miro) and is adapted to v4l2
> layer.
>
> It provides only basic functionality: frequency changing and
> FM module muting.
>
> Signed-off-by: Krzysztof Helt <krzysztof.h1@xxxxx>
> Reviewed-by: Hans Verkuil <hverkuil@xxxxxxxxx>
> ---
> This is the third version of the patch with fixed issues pointed
> by Takashi Iwai.
Thanks, I merged now this to sound tree exceptionally since it's purely
depends on snd-miro driver. Will appear in the next linux-next.
Takashi
>
> drivers/media/radio/Kconfig | 18 +++
> drivers/media/radio/Makefile | 1 +
> drivers/media/radio/radio-miropcm20.c | 270 +++++++++++++++++++++++++++++++++
> 3 files changed, 289 insertions(+), 0 deletions(-)
> create mode 100644 drivers/media/radio/radio-miropcm20.c
>
> diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
> index a87a477..b134553 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 2a1be3b..8a63d54 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 0000000..4ff8854
> --- /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@xxxxxxxxxxxxxxx>
> + * 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);
> --
> 1.6.4
>
>
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