V4L/DVB (3325): WSS output interface for av7110

- Implemented v4l2 api for sliced vbi data output
to pass WSS data from userspace to the av7110

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>

1 files changed, 109 insertions, 7 deletions

diff --git a/drivers/media/dvb/ttpci/av7110_v4l.c b/drivers/media/dvb/ttpci/av7110_v4l.c
index e3296b07caac..94cf38c7e8a8 100644
--- a/drivers/media/dvb/ttpci/av7110_v4l.c
+++ b/drivers/media/dvb/ttpci/av7110_v4l.c
@@ -490,6 +490,58 @@ static int av7110_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
                 dprintk(2, "VIDIOC_S_AUDIO: %d\n", a->index);
                 break;
         }
+        case VIDIOC_G_SLICED_VBI_CAP:
+        {
+                struct v4l2_sliced_vbi_cap *cap = arg;
+                dprintk(2, "VIDIOC_G_SLICED_VBI_CAP\n");
+                memset(cap, 0, sizeof *cap);
+                if (FW_VERSION(av7110->arm_app) >= 0x2623) {
+                        cap->service_set = V4L2_SLICED_WSS_625;
+                        cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
+                }
+                break;
+        }
+        case VIDIOC_G_FMT:
+        {
+                struct v4l2_format *f = arg;
+                dprintk(2, "VIDIOC_G_FMT:\n");
+                if (f->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ||
+                    FW_VERSION(av7110->arm_app) < 0x2623)
+                        return -EAGAIN; /* handled by core driver */
+                memset(&f->fmt.sliced, 0, sizeof f->fmt.sliced);
+                if (av7110->wssMode) {
+                        f->fmt.sliced.service_set = V4L2_SLICED_WSS_625;
+                        f->fmt.sliced.service_lines[0][23] = V4L2_SLICED_WSS_625;
+                        f->fmt.sliced.io_size = sizeof (struct v4l2_sliced_vbi_data);
+                }
+                break;
+        }
+        case VIDIOC_S_FMT:
+        {
+                struct v4l2_format *f = arg;
+                dprintk(2, "VIDIOC_S_FMT\n");
+                if (f->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT ||
+                    FW_VERSION(av7110->arm_app) < 0x2623)
+                        return -EAGAIN; /* handled by core driver */
+                if (f->fmt.sliced.service_set != V4L2_SLICED_WSS_625 &&
+                    f->fmt.sliced.service_lines[0][23] != V4L2_SLICED_WSS_625) {
+                        memset(&f->fmt.sliced, 0, sizeof f->fmt.sliced);
+                        /* WSS controlled by firmware */
+                        av7110->wssMode = 0;
+                        av7110->wssData = 0;
+                        return av7110_fw_cmd(av7110, COMTYPE_ENCODER,
+                                             SetWSSConfig, 1, 0);
+                } else {
+                        memset(&f->fmt.sliced, 0, sizeof f->fmt.sliced);
+                        f->fmt.sliced.service_set = V4L2_SLICED_WSS_625;
+                        f->fmt.sliced.service_lines[0][23] = V4L2_SLICED_WSS_625;
+                        f->fmt.sliced.io_size = sizeof (struct v4l2_sliced_vbi_data);
+                        /* WSS controlled by userspace */
+                        av7110->wssMode = 1;
+                        av7110->wssData = 0;
+                }
+                break;
+        }
         default:
                 printk("no such ioctl\n");
                 return -ENOIOCTLCMD;
@@ -497,6 +549,46 @@ static int av7110_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
         return 0;
 }
 
+static int av7110_vbi_reset(struct inode *inode, struct file *file)
+{
+        struct saa7146_fh *fh = file->private_data;
+        struct saa7146_dev *dev = fh->dev;
+        struct av7110 *av7110 = (struct av7110*) dev->ext_priv;
+
+        dprintk(2, "%s\n", __FUNCTION__);
+        av7110->wssMode = 0;
+        av7110->wssData = 0;
+        if (FW_VERSION(av7110->arm_app) < 0x2623)
+                return 0;
+        else
+                return av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig, 1, 0);
+}
+
+static ssize_t av7110_vbi_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
+{
+        struct saa7146_fh *fh = file->private_data;
+        struct saa7146_dev *dev = fh->dev;
+        struct av7110 *av7110 = (struct av7110*) dev->ext_priv;
+        struct v4l2_sliced_vbi_data d;
+        int rc;
+
+        dprintk(2, "%s\n", __FUNCTION__);
+        if (FW_VERSION(av7110->arm_app) < 0x2623 || !av7110->wssMode || count != sizeof d)
+                return -EINVAL;
+        if (copy_from_user(&d, data, count))
+                return -EFAULT;
+        if ((d.id != 0 && d.id != V4L2_SLICED_WSS_625) || d.field != 0 || d.line != 23)
+                return -EINVAL;
+        if (d.id) {
+                av7110->wssData = ((d.data[1] << 8) & 0x3f00) | d.data[0];
+                rc = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig,
+                                   2, 1, av7110->wssData);
+        } else {
+                av7110->wssData = 0;
+                rc = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetWSSConfig, 1, 0);
+        }
+        return (rc < 0) ? rc : count;
+}
 
 /****************************************************************************
  * INITIALIZATION
@@ -512,6 +604,9 @@ static struct saa7146_extension_ioctls ioctls[] = {
         { VIDIOC_S_TUNER,       SAA7146_EXCLUSIVE },
         { VIDIOC_G_AUDIO,       SAA7146_EXCLUSIVE },
         { VIDIOC_S_AUDIO,       SAA7146_EXCLUSIVE },
+        { VIDIOC_G_SLICED_VBI_CAP, SAA7146_EXCLUSIVE },
+        { VIDIOC_G_FMT,         SAA7146_BEFORE },
+        { VIDIOC_S_FMT,         SAA7146_BEFORE },
         { 0, 0 }
 };
 
@@ -692,12 +787,11 @@ int av7110_init_v4l(struct av7110 *av7110)
                 saa7146_vv_release(dev);
                 return -ENODEV;
         }
-        if (av7110->analog_tuner_flags) {
-                if (saa7146_register_device(&av7110->vbi_dev, dev, "av7110", VFL_TYPE_VBI)) {
-                        ERR(("cannot register vbi v4l2 device. skipping.\n"));
-                } else {
+        if (saa7146_register_device(&av7110->vbi_dev, dev, "av7110", VFL_TYPE_VBI)) {
+                ERR(("cannot register vbi v4l2 device. skipping.\n"));
+        } else {
+                if (av7110->analog_tuner_flags)
                         av7110->analog_tuner_flags |= ANALOG_TUNER_VBI;
-                }
         }
         return 0;
 }
@@ -778,7 +872,7 @@ static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
 static struct saa7146_ext_vv av7110_vv_data_st = {
         .inputs         = 1,
         .audios         = 1,
-        .capabilities   = 0,
+        .capabilities   = V4L2_CAP_SLICED_VBI_OUTPUT,
         .flags          = 0,
 
         .stds           = &standard[0],
@@ -787,12 +881,16 @@ static struct saa7146_ext_vv av7110_vv_data_st = {
 
         .ioctls         = &ioctls[0],
         .ioctl          = av7110_ioctl,
+
+        .vbi_fops.open  = av7110_vbi_reset,
+        .vbi_fops.release = av7110_vbi_reset,
+        .vbi_fops.write = av7110_vbi_write,
 };
 
 static struct saa7146_ext_vv av7110_vv_data_c = {
         .inputs         = 1,
         .audios         = 1,
-        .capabilities   = V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE,
+        .capabilities   = V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_OUTPUT,
         .flags          = SAA7146_USE_PORT_B_FOR_VBI,
 
         .stds           = &standard[0],
@@ -801,5 +899,9 @@ static struct saa7146_ext_vv av7110_vv_data_c = {
 
         .ioctls         = &ioctls[0],
         .ioctl          = av7110_ioctl,
+
+        .vbi_fops.open  = av7110_vbi_reset,
+        .vbi_fops.release = av7110_vbi_reset,
+        .vbi_fops.write = av7110_vbi_write,
 };