diff options
author | Nick Dyer <nick@shmanahar.org> | 2016-08-22 09:28:23 (GMT) |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-08-23 19:34:29 (GMT) |
commit | b497265266a8083547e9ca162ace72cbb41522f1 (patch) | |
tree | 934656cbd9115584d2db93f931c4be6be56f57f4 /drivers/input | |
parent | 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d (diff) | |
download | linux-b497265266a8083547e9ca162ace72cbb41522f1.tar.xz |
[media] Input: sur40 - use new V4L2 touch input type
Support both V4L2_TCH_FMT_TU08 and V4L2_PIX_FMT_GREY for backwards
compatibility.
Signed-off-by: Nick Dyer <nick@shmanahar.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r-- | drivers/input/touchscreen/sur40.c | 124 |
1 files changed, 91 insertions, 33 deletions
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c index 4ea4757..3967d8c 100644 --- a/drivers/input/touchscreen/sur40.c +++ b/drivers/input/touchscreen/sur40.c @@ -139,6 +139,27 @@ struct sur40_image_header { #define SUR40_GET_STATE 0xc5 /* 4 bytes state (?) */ #define SUR40_GET_SENSORS 0xb1 /* 8 bytes sensors */ +static const struct v4l2_pix_format sur40_pix_format[] = { + { + .pixelformat = V4L2_TCH_FMT_TU08, + .width = SENSOR_RES_X / 2, + .height = SENSOR_RES_Y / 2, + .field = V4L2_FIELD_NONE, + .colorspace = V4L2_COLORSPACE_SRGB, + .bytesperline = SENSOR_RES_X / 2, + .sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2), + }, + { + .pixelformat = V4L2_PIX_FMT_GREY, + .width = SENSOR_RES_X / 2, + .height = SENSOR_RES_Y / 2, + .field = V4L2_FIELD_NONE, + .colorspace = V4L2_COLORSPACE_SRGB, + .bytesperline = SENSOR_RES_X / 2, + .sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2), + } +}; + /* master device state */ struct sur40_state { @@ -149,6 +170,7 @@ struct sur40_state { struct v4l2_device v4l2; struct video_device vdev; struct mutex lock; + struct v4l2_pix_format pix_fmt; struct vb2_queue queue; struct list_head buf_list; @@ -169,7 +191,6 @@ struct sur40_buffer { /* forward declarations */ static const struct video_device sur40_video_device; -static const struct v4l2_pix_format sur40_video_format; static const struct vb2_queue sur40_queue; static void sur40_process_video(struct sur40_state *sur40); @@ -420,7 +441,7 @@ static void sur40_process_video(struct sur40_state *sur40) goto err_poll; } - if (le32_to_cpu(img->size) != sur40_video_format.sizeimage) { + if (le32_to_cpu(img->size) != sur40->pix_fmt.sizeimage) { dev_err(sur40->dev, "image size mismatch\n"); goto err_poll; } @@ -431,7 +452,7 @@ static void sur40_process_video(struct sur40_state *sur40) result = usb_sg_init(&sgr, sur40->usbdev, usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT), 0, - sgt->sgl, sgt->nents, sur40_video_format.sizeimage, 0); + sgt->sgl, sgt->nents, sur40->pix_fmt.sizeimage, 0); if (result < 0) { dev_err(sur40->dev, "error %d in usb_sg_init\n", result); goto err_poll; @@ -586,13 +607,14 @@ static int sur40_probe(struct usb_interface *interface, if (error) goto err_unreg_v4l2; + sur40->pix_fmt = sur40_pix_format[0]; sur40->vdev = sur40_video_device; sur40->vdev.v4l2_dev = &sur40->v4l2; sur40->vdev.lock = &sur40->lock; sur40->vdev.queue = &sur40->queue; video_set_drvdata(&sur40->vdev, sur40); - error = video_register_device(&sur40->vdev, VFL_TYPE_GRABBER, -1); + error = video_register_device(&sur40->vdev, VFL_TYPE_TOUCH, -1); if (error) { dev_err(&interface->dev, "Unable to register video subdevice."); @@ -647,14 +669,16 @@ static int sur40_queue_setup(struct vb2_queue *q, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { + struct sur40_state *sur40 = vb2_get_drv_priv(q); + if (q->num_buffers + *nbuffers < 3) *nbuffers = 3 - q->num_buffers; if (*nplanes) - return sizes[0] < sur40_video_format.sizeimage ? -EINVAL : 0; + return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0; *nplanes = 1; - sizes[0] = sur40_video_format.sizeimage; + sizes[0] = sur40->pix_fmt.sizeimage; return 0; } @@ -666,7 +690,7 @@ static int sur40_queue_setup(struct vb2_queue *q, static int sur40_buffer_prepare(struct vb2_buffer *vb) { struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue); - unsigned long size = sur40_video_format.sizeimage; + unsigned long size = sur40->pix_fmt.sizeimage; if (vb2_plane_size(vb, 0) < size) { dev_err(&sur40->usbdev->dev, "buffer too small (%lu < %lu)\n", @@ -741,7 +765,7 @@ static int sur40_vidioc_querycap(struct file *file, void *priv, strlcpy(cap->driver, DRIVER_SHORT, sizeof(cap->driver)); strlcpy(cap->card, DRIVER_LONG, sizeof(cap->card)); usb_make_path(sur40->usbdev, cap->bus_info, sizeof(cap->bus_info)); - cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; @@ -753,7 +777,7 @@ static int sur40_vidioc_enum_input(struct file *file, void *priv, { if (i->index != 0) return -EINVAL; - i->type = V4L2_INPUT_TYPE_CAMERA; + i->type = V4L2_INPUT_TYPE_TOUCH; i->std = V4L2_STD_UNKNOWN; strlcpy(i->name, "In-Cell Sensor", sizeof(i->name)); i->capabilities = 0; @@ -771,19 +795,57 @@ static int sur40_vidioc_g_input(struct file *file, void *priv, unsigned int *i) return 0; } -static int sur40_vidioc_fmt(struct file *file, void *priv, +static int sur40_vidioc_try_fmt(struct file *file, void *priv, + struct v4l2_format *f) +{ + switch (f->fmt.pix.pixelformat) { + case V4L2_PIX_FMT_GREY: + f->fmt.pix = sur40_pix_format[1]; + break; + + default: + f->fmt.pix = sur40_pix_format[0]; + break; + } + + return 0; +} + +static int sur40_vidioc_s_fmt(struct file *file, void *priv, struct v4l2_format *f) { - f->fmt.pix = sur40_video_format; + struct sur40_state *sur40 = video_drvdata(file); + + switch (f->fmt.pix.pixelformat) { + case V4L2_PIX_FMT_GREY: + sur40->pix_fmt = sur40_pix_format[1]; + break; + + default: + sur40->pix_fmt = sur40_pix_format[0]; + break; + } + + f->fmt.pix = sur40->pix_fmt; + return 0; +} + +static int sur40_vidioc_g_fmt(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct sur40_state *sur40 = video_drvdata(file); + + f->fmt.pix = sur40->pix_fmt; return 0; } static int sur40_vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { - if (f->index != 0) + if (f->index >= ARRAY_SIZE(sur40_pix_format)) return -EINVAL; - f->pixelformat = V4L2_PIX_FMT_GREY; + + f->pixelformat = sur40_pix_format[f->index].pixelformat; f->flags = 0; return 0; } @@ -791,22 +853,28 @@ static int sur40_vidioc_enum_fmt(struct file *file, void *priv, static int sur40_vidioc_enum_framesizes(struct file *file, void *priv, struct v4l2_frmsizeenum *f) { - if ((f->index != 0) || (f->pixel_format != V4L2_PIX_FMT_GREY)) + struct sur40_state *sur40 = video_drvdata(file); + + if ((f->index != 0) || ((f->pixel_format != V4L2_TCH_FMT_TU08) + && (f->pixel_format != V4L2_PIX_FMT_GREY))) return -EINVAL; f->type = V4L2_FRMSIZE_TYPE_DISCRETE; - f->discrete.width = sur40_video_format.width; - f->discrete.height = sur40_video_format.height; + f->discrete.width = sur40->pix_fmt.width; + f->discrete.height = sur40->pix_fmt.height; return 0; } static int sur40_vidioc_enum_frameintervals(struct file *file, void *priv, struct v4l2_frmivalenum *f) { - if ((f->index > 1) || (f->pixel_format != V4L2_PIX_FMT_GREY) - || (f->width != sur40_video_format.width) - || (f->height != sur40_video_format.height)) - return -EINVAL; + struct sur40_state *sur40 = video_drvdata(file); + + if ((f->index > 1) || ((f->pixel_format != V4L2_TCH_FMT_TU08) + && (f->pixel_format != V4L2_PIX_FMT_GREY)) + || (f->width != sur40->pix_fmt.width) + || (f->height != sur40->pix_fmt.height)) + return -EINVAL; f->type = V4L2_FRMIVAL_TYPE_DISCRETE; f->discrete.denominator = 60/(f->index+1); @@ -862,9 +930,9 @@ static const struct v4l2_ioctl_ops sur40_video_ioctl_ops = { .vidioc_querycap = sur40_vidioc_querycap, .vidioc_enum_fmt_vid_cap = sur40_vidioc_enum_fmt, - .vidioc_try_fmt_vid_cap = sur40_vidioc_fmt, - .vidioc_s_fmt_vid_cap = sur40_vidioc_fmt, - .vidioc_g_fmt_vid_cap = sur40_vidioc_fmt, + .vidioc_try_fmt_vid_cap = sur40_vidioc_try_fmt, + .vidioc_s_fmt_vid_cap = sur40_vidioc_s_fmt, + .vidioc_g_fmt_vid_cap = sur40_vidioc_g_fmt, .vidioc_enum_framesizes = sur40_vidioc_enum_framesizes, .vidioc_enum_frameintervals = sur40_vidioc_enum_frameintervals, @@ -891,16 +959,6 @@ static const struct video_device sur40_video_device = { .release = video_device_release_empty, }; -static const struct v4l2_pix_format sur40_video_format = { - .pixelformat = V4L2_PIX_FMT_GREY, - .width = SENSOR_RES_X / 2, - .height = SENSOR_RES_Y / 2, - .field = V4L2_FIELD_NONE, - .colorspace = V4L2_COLORSPACE_SRGB, - .bytesperline = SENSOR_RES_X / 2, - .sizeimage = (SENSOR_RES_X/2) * (SENSOR_RES_Y/2), -}; - /* USB-specific object needed to register this driver with the USB subsystem. */ static struct usb_driver sur40_driver = { .name = DRIVER_SHORT, |