From 0be4375410f1ecc917f3c0caf8f98908d357c93f Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 5 Jan 2008 17:22:01 -0300 Subject: [PATCH] V4L/DVB (6956): Add Radio support for em28xx Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/em28xx/em28xx-video.c | 296 +++++++++++++++++----- drivers/media/video/em28xx/em28xx.h | 2 + 2 files changed, 238 insertions(+), 60 deletions(-) diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 0f075f532eae..5a90462d82e5 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -61,13 +61,17 @@ static LIST_HEAD(em28xx_devlist); static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; -static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; +static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; + module_param_array(card, int, NULL, 0444); module_param_array(video_nr, int, NULL, 0444); module_param_array(vbi_nr, int, NULL, 0444); -MODULE_PARM_DESC(card,"card type"); -MODULE_PARM_DESC(video_nr,"video device numbers"); -MODULE_PARM_DESC(vbi_nr,"vbi device numbers"); +module_param_array(radio_nr, int, NULL, 0444); +MODULE_PARM_DESC(card, "card type"); +MODULE_PARM_DESC(video_nr, "video device numbers"); +MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); +MODULE_PARM_DESC(radio_nr, "radio device numbers"); static unsigned int video_debug = 0; module_param(video_debug,int,0644); @@ -791,7 +795,7 @@ static int vidioc_g_frequency(struct file *file, void *priv, struct em28xx_fh *fh = priv; struct em28xx *dev = fh->dev; - f->type = V4L2_TUNER_ANALOG_TV; + f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; f->frequency = dev->ctl_freq; return 0; @@ -811,7 +815,9 @@ static int vidioc_s_frequency(struct file *file, void *priv, if (0 != f->tuner) return -EINVAL; - if (V4L2_TUNER_ANALOG_TV != f->type) + if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV)) + return -EINVAL; + if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO)) return -EINVAL; mutex_lock(&dev->lock); @@ -1148,6 +1154,102 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) return 0; } +/* ----------------------------------------------------------- */ +/* RADIO ESPECIFIC IOCTLS */ +/* ----------------------------------------------------------- */ + +static int radio_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; + + strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); + strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); + strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info)); + + cap->version = EM28XX_VERSION_CODE; + cap->capabilities = V4L2_CAP_TUNER; + return 0; +} + +static int radio_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; + + if (unlikely(t->index > 0)) + return -EINVAL; + + strcpy(t->name, "Radio"); + t->type = V4L2_TUNER_RADIO; + + em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); + return 0; +} + +static int radio_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + if (i->index != 0) + return -EINVAL; + strcpy(i->name, "Radio"); + i->type = V4L2_INPUT_TYPE_TUNER; + + return 0; +} + +static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a) +{ + if (unlikely(a->index)) + return -EINVAL; + + strcpy(a->name, "Radio"); + return 0; +} + +static int radio_s_tuner(struct file *file, void *priv, + struct v4l2_tuner *t) +{ + struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; + + if (0 != t->index) + return -EINVAL; + + em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); + + return 0; +} + +static int radio_s_audio(struct file *file, void *fh, + struct v4l2_audio *a) +{ + return 0; +} + +static int radio_s_input(struct file *file, void *fh, unsigned int i) +{ + return 0; +} + +static int radio_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + int i; + + if (qc->id < V4L2_CID_BASE || + qc->id >= V4L2_CID_LASTP1) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { + if (qc->id && qc->id == em28xx_qctrl[i].id) { + memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); + return 0; + } + } + + return -EINVAL; +} + /* * em28xx_v4l2_open() * inits the device and starts isoc transfer @@ -1155,7 +1257,7 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) static int em28xx_v4l2_open(struct inode *inode, struct file *filp) { int minor = iminor(inode); - int errCode = 0; + int errCode = 0, radio = 0; struct em28xx *h,*dev = NULL; struct em28xx_fh *fh; @@ -1168,6 +1270,11 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp) dev = h; dev->type = V4L2_BUF_TYPE_VBI_CAPTURE; } + if (h->radio_dev && + h->radio_dev->minor == minor) { + radio = 1; + dev = h; + } } if (NULL == dev) return -ENODEV; @@ -1183,6 +1290,7 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp) } mutex_lock(&dev->lock); fh->dev = dev; + fh->radio = radio; filp->private_data = fh; if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { @@ -1207,6 +1315,10 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp) em28xx_empty_framequeues(dev); } + if (fh->radio) { + em28xx_videodbg("video_open: setting radio device\n"); + em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL); + } dev->users++; @@ -1229,12 +1341,30 @@ static void em28xx_release_resources(struct em28xx *dev) dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); list_del(&dev->devlist); - video_unregister_device(dev->vdev); - video_unregister_device(dev->vbi_dev); + if (dev->radio_dev) { + if (-1 != dev->radio_dev->minor) + video_unregister_device(dev->radio_dev); + else + video_device_release(dev->radio_dev); + dev->radio_dev = NULL; + } + if (dev->vbi_dev) { + if (-1 != dev->vbi_dev->minor) + video_unregister_device(dev->vbi_dev); + else + video_device_release(dev->vbi_dev); + dev->vbi_dev = NULL; + } + if (dev->vdev) { + if (-1 != dev->vdev->minor) + video_unregister_device(dev->vdev); + else + video_device_release(dev->vdev); + dev->vdev = NULL; + } em28xx_i2c_unregister(dev); usb_put_dev(dev->udev); - /* Mark device as unused */ em28xx_devused&=~(1<devno); } @@ -1555,6 +1685,15 @@ static const struct file_operations em28xx_v4l_fops = { .compat_ioctl = v4l_compat_ioctl32, }; +static const struct file_operations radio_fops = { + .owner = THIS_MODULE, + .open = em28xx_v4l2_open, + .release = em28xx_v4l2_close, + .ioctl = video_ioctl2, + .compat_ioctl = v4l_compat_ioctl32, + .llseek = no_llseek, +}; + static const struct video_device em28xx_video_template = { .fops = &em28xx_v4l_fops, .release = video_device_release, @@ -1595,6 +1734,25 @@ static const struct video_device em28xx_video_template = { .current_norm = V4L2_STD_PAL, }; +static struct video_device em28xx_radio_template = { + .name = "em28xx-radio", + .type = VID_TYPE_TUNER, + .fops = &radio_fops, + .minor = -1, + .vidioc_querycap = radio_querycap, + .vidioc_g_tuner = radio_g_tuner, + .vidioc_enum_input = radio_enum_input, + .vidioc_g_audio = radio_g_audio, + .vidioc_s_tuner = radio_s_tuner, + .vidioc_s_audio = radio_s_audio, + .vidioc_s_input = radio_s_input, + .vidioc_queryctrl = radio_queryctrl, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_g_frequency = vidioc_g_frequency, + .vidioc_s_frequency = vidioc_s_frequency, +}; + /******************************** usb interface *****************************************/ @@ -1637,6 +1795,29 @@ void em28xx_unregister_extension(struct em28xx_ops *ops) } EXPORT_SYMBOL(em28xx_unregister_extension); +struct video_device *em28xx_vdev_init(struct em28xx *dev, + const struct video_device *template, + const int type, + const char *type_name) +{ + struct video_device *vfd; + + vfd = video_device_alloc(); + if (NULL == vfd) + return NULL; + *vfd = *template; + vfd->minor = -1; + vfd->dev = &dev->udev->dev; + vfd->release = video_device_release; + vfd->type = type; + + snprintf(vfd->name, sizeof(vfd->name), "%s %s", + dev->name, type_name); + + return vfd; +} + + /* * em28xx_init_dev() * allocates and inits the device structs, registers i2c bus and v4l device @@ -1710,40 +1891,55 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, errCode = em28xx_config(dev); + list_add_tail(&dev->devlist, &em28xx_devlist); + /* allocate and fill video video_device struct */ - dev->vdev = video_device_alloc(); + dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, + VID_TYPE_CAPTURE, "video"); if (NULL == dev->vdev) { em28xx_errdev("cannot allocate video_device.\n"); - em28xx_devused&=~(1<devno); - kfree(dev); - return -ENOMEM; + goto fail_unreg; } - memcpy(dev->vdev, &em28xx_video_template, - sizeof(em28xx_video_template)); - dev->vdev->type = VID_TYPE_CAPTURE; if (dev->has_tuner) dev->vdev->type |= VID_TYPE_TUNER; - dev->vdev->dev = &dev->udev->dev; - snprintf(dev->vdev->name, sizeof(dev->vbi_dev->name), - "%s#%d %s", "em28xx", dev->devno, "video"); + + /* register v4l2 video video_device */ + retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, + video_nr[dev->devno]); + if (retval) { + em28xx_errdev("unable to register video device (error=%i).\n", + retval); + goto fail_unreg; + } /* Allocate and fill vbi video_device struct */ - dev->vbi_dev = video_device_alloc(); - if (NULL == dev->vbi_dev) { - em28xx_errdev("cannot allocate video_device.\n"); - kfree(dev->vdev); - em28xx_devused&=~(1<devno); - kfree(dev); - return -ENOMEM; + dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, + VFL_TYPE_VBI, "vbi"); + /* register v4l2 vbi video_device */ + if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, + vbi_nr[dev->devno]) < 0) { + em28xx_errdev("unable to register vbi device\n"); + retval = -ENODEV; + goto fail_unreg; + } + + if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { + dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, + VFL_TYPE_RADIO, "radio"); + if (NULL == dev->radio_dev) { + em28xx_errdev("cannot allocate video_device.\n"); + goto fail_unreg; + } + retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, + radio_nr[dev->devno]); + if (retval < 0) { + em28xx_errdev("can't register radio device\n"); + goto fail_unreg; + } + em28xx_info("Registered radio device as /dev/radio%d\n", + dev->radio_dev->minor & 0x1f); } - memcpy(dev->vbi_dev, &em28xx_video_template, - sizeof(em28xx_video_template)); - dev->vbi_dev->type = VFL_TYPE_VBI; - dev->vbi_dev->dev = &dev->udev->dev; - snprintf(dev->vbi_dev->name, sizeof(dev->vbi_dev->name), - "%s#%d %s", "em28xx", dev->devno, "vbi"); - list_add_tail(&dev->devlist,&em28xx_devlist); if (dev->has_msp34xx) { /* Send a reset to other chips via gpio */ @@ -1755,32 +1951,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, video_mux(dev, 0); - /* register v4l2 video video_device */ - if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, - video_nr[dev->devno]))) { - em28xx_errdev("unable to register video device (error=%i).\n", - retval); - mutex_unlock(&dev->lock); - list_del(&dev->devlist); - video_device_release(dev->vdev); - em28xx_devused&=~(1<devno); - kfree(dev); - return -ENODEV; - } - - /* register v4l2 vbi video_device */ - if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, - vbi_nr[dev->devno]) < 0) { - printk("unable to register vbi device\n"); - mutex_unlock(&dev->lock); - list_del(&dev->devlist); - video_device_release(dev->vbi_dev); - video_device_release(dev->vdev); - em28xx_devused&=~(1<devno); - kfree(dev); - return -ENODEV; - } - em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); @@ -1795,6 +1965,12 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, mutex_unlock(&em28xx_extension_devlist_lock); return 0; + +fail_unreg: + em28xx_release_resources(dev); + mutex_unlock(&dev->lock); + kfree(dev); + return retval; } #if defined(CONFIG_MODULES) && defined(MODULE) diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h index 2d57330c4537..2ba34e5b4cc2 100644 --- a/drivers/media/video/em28xx/em28xx.h +++ b/drivers/media/video/em28xx/em28xx.h @@ -191,6 +191,7 @@ struct em28xx_board { enum em28xx_decoder decoder; struct em28xx_input input[MAX_EM28XX_INPUT]; + struct em28xx_input radio; }; struct em28xx_eeprom { @@ -307,6 +308,7 @@ struct em28xx { struct list_head inqueue, outqueue; wait_queue_head_t open, wait_frame, wait_stream; struct video_device *vbi_dev; + struct video_device *radio_dev; unsigned char eedata[256]; -- GitLab