media: cx23885: Add i2c device analog tuner support

Hauppauge QuadHD/1265/5525 boards all use i2c device drivers and
have tuner_type equal TUNER_ABSENT. This means additional support
is required to enable the analog tuning capability, a case
statement is used to identify these models.
Signed-off-by: Brad Love <brad@nextdimension.cc>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/pci/cx23885/cx23885-video.c

@@ -639,8 +639,18 @@ static int vidioc_querycap(struct file *file, void  *priv,
 			    V4L2_CAP_AUDIO | V4L2_CAP_VBI_CAPTURE |
 			    V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE |
 			    V4L2_CAP_DEVICE_CAPS;
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		cap->capabilities |= V4L2_CAP_TUNER;
+		break;
+	default:
 		if (dev->tuner_type != TUNER_ABSENT)
 			cap->capabilities |= V4L2_CAP_TUNER;
+		break;
+	}
 	return 0;
 }
 
@@ -886,8 +896,17 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 {
 	struct cx23885_dev *dev = video_drvdata(file);
 
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		break;
+	default:
 		if (dev->tuner_type == TUNER_ABSENT)
 			return -EINVAL;
+		break;
+	}
 	if (0 != t->index)
 		return -EINVAL;
 
@@ -902,8 +921,17 @@ static int vidioc_s_tuner(struct file *file, void *priv,
 {
 	struct cx23885_dev *dev = video_drvdata(file);
 
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		break;
+	default:
 		if (dev->tuner_type == TUNER_ABSENT)
 			return -EINVAL;
+		break;
+	}
 	if (0 != t->index)
 		return -EINVAL;
 	/* Update the A/V core */
@@ -917,9 +945,17 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 {
 	struct cx23885_dev *dev = video_drvdata(file);
 
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		break;
+	default:
 		if (dev->tuner_type == TUNER_ABSENT)
 			return -EINVAL;
-
+		break;
+	}
 	f->type = V4L2_TUNER_ANALOG_TV;
 	f->frequency = dev->freq;
 
@@ -933,8 +969,17 @@ static int cx23885_set_freq(struct cx23885_dev *dev, const struct v4l2_frequency
 	struct v4l2_ctrl *mute;
 	int old_mute_val = 1;
 
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		break;
+	default:
 		if (dev->tuner_type == TUNER_ABSENT)
 			return -EINVAL;
+		break;
+	}
 	if (unlikely(f->tuner != 0))
 		return -EINVAL;
 
@@ -1311,8 +1356,18 @@ int cx23885_video_register(struct cx23885_dev *dev)
 	dev->video_dev->queue = &dev->vb2_vidq;
 	dev->video_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
 				      V4L2_CAP_AUDIO | V4L2_CAP_VIDEO_CAPTURE;
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		dev->video_dev->device_caps |= V4L2_CAP_TUNER;
+		break;
+	default:
 		if (dev->tuner_type != TUNER_ABSENT)
 			dev->video_dev->device_caps |= V4L2_CAP_TUNER;
+	}
+
 	err = video_register_device(dev->video_dev, VFL_TYPE_VIDEO,
 				    video_nr[dev->nr]);
 	if (err < 0) {
@@ -1329,8 +1384,17 @@ int cx23885_video_register(struct cx23885_dev *dev)
 	dev->vbi_dev->queue = &dev->vb2_vbiq;
 	dev->vbi_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
 				    V4L2_CAP_AUDIO | V4L2_CAP_VBI_CAPTURE;
+	switch (dev->board) { /* i2c device tuners */
+	case CX23885_BOARD_HAUPPAUGE_HVR1265_K4:
+	case CX23885_BOARD_HAUPPAUGE_HVR5525:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_DVB:
+	case CX23885_BOARD_HAUPPAUGE_QUADHD_ATSC:
+		dev->vbi_dev->device_caps |= V4L2_CAP_TUNER;
+		break;
+	default:
 		if (dev->tuner_type != TUNER_ABSENT)
 			dev->vbi_dev->device_caps |= V4L2_CAP_TUNER;
+	}
 	err = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
 				    vbi_nr[dev->nr]);
 	if (err < 0) {