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341 lines
8.8 KiB
341 lines
8.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* vivid-touch-cap.c - touch support functions. |
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*/ |
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#include "vivid-core.h" |
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#include "vivid-kthread-touch.h" |
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#include "vivid-vid-common.h" |
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#include "vivid-touch-cap.h" |
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static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, |
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unsigned int *nplanes, unsigned int sizes[], |
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struct device *alloc_devs[]) |
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{ |
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struct vivid_dev *dev = vb2_get_drv_priv(vq); |
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struct v4l2_pix_format *f = &dev->tch_format; |
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unsigned int size = f->sizeimage; |
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if (*nplanes) { |
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if (sizes[0] < size) |
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return -EINVAL; |
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} else { |
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sizes[0] = size; |
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} |
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if (vq->num_buffers + *nbuffers < 2) |
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*nbuffers = 2 - vq->num_buffers; |
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*nplanes = 1; |
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return 0; |
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} |
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static int touch_cap_buf_prepare(struct vb2_buffer *vb) |
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{ |
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struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
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struct v4l2_pix_format *f = &dev->tch_format; |
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unsigned int size = f->sizeimage; |
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if (dev->buf_prepare_error) { |
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/* |
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* Error injection: test what happens if buf_prepare() returns |
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* an error. |
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*/ |
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dev->buf_prepare_error = false; |
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return -EINVAL; |
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} |
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if (vb2_plane_size(vb, 0) < size) { |
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dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", |
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__func__, vb2_plane_size(vb, 0), size); |
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return -EINVAL; |
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} |
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vb2_set_plane_payload(vb, 0, size); |
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return 0; |
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} |
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static void touch_cap_buf_queue(struct vb2_buffer *vb) |
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{ |
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
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struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
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struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb); |
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vbuf->field = V4L2_FIELD_NONE; |
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spin_lock(&dev->slock); |
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list_add_tail(&buf->list, &dev->touch_cap_active); |
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spin_unlock(&dev->slock); |
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} |
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static int touch_cap_start_streaming(struct vb2_queue *vq, unsigned int count) |
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{ |
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struct vivid_dev *dev = vb2_get_drv_priv(vq); |
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int err; |
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dev->touch_cap_seq_count = 0; |
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if (dev->start_streaming_error) { |
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dev->start_streaming_error = false; |
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err = -EINVAL; |
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} else { |
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err = vivid_start_generating_touch_cap(dev); |
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} |
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if (err) { |
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struct vivid_buffer *buf, *tmp; |
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list_for_each_entry_safe(buf, tmp, |
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&dev->touch_cap_active, list) { |
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list_del(&buf->list); |
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vb2_buffer_done(&buf->vb.vb2_buf, |
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VB2_BUF_STATE_QUEUED); |
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} |
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} |
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return err; |
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} |
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/* abort streaming and wait for last buffer */ |
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static void touch_cap_stop_streaming(struct vb2_queue *vq) |
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{ |
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struct vivid_dev *dev = vb2_get_drv_priv(vq); |
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vivid_stop_generating_touch_cap(dev); |
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} |
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static void touch_cap_buf_request_complete(struct vb2_buffer *vb) |
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{ |
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struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); |
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v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_touch_cap); |
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} |
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const struct vb2_ops vivid_touch_cap_qops = { |
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.queue_setup = touch_cap_queue_setup, |
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.buf_prepare = touch_cap_buf_prepare, |
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.buf_queue = touch_cap_buf_queue, |
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.start_streaming = touch_cap_start_streaming, |
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.stop_streaming = touch_cap_stop_streaming, |
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.buf_request_complete = touch_cap_buf_request_complete, |
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.wait_prepare = vb2_ops_wait_prepare, |
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.wait_finish = vb2_ops_wait_finish, |
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}; |
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int vivid_enum_fmt_tch(struct file *file, void *priv, struct v4l2_fmtdesc *f) |
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{ |
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if (f->index) |
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return -EINVAL; |
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f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; |
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return 0; |
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} |
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int vivid_g_fmt_tch(struct file *file, void *priv, struct v4l2_format *f) |
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{ |
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struct vivid_dev *dev = video_drvdata(file); |
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if (dev->multiplanar) |
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return -ENOTTY; |
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f->fmt.pix = dev->tch_format; |
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return 0; |
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} |
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int vivid_g_fmt_tch_mplane(struct file *file, void *priv, struct v4l2_format *f) |
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{ |
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struct vivid_dev *dev = video_drvdata(file); |
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struct v4l2_format sp_fmt; |
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if (!dev->multiplanar) |
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return -ENOTTY; |
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sp_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
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sp_fmt.fmt.pix = dev->tch_format; |
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fmt_sp2mp(&sp_fmt, f); |
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return 0; |
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} |
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int vivid_g_parm_tch(struct file *file, void *priv, |
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struct v4l2_streamparm *parm) |
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{ |
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struct vivid_dev *dev = video_drvdata(file); |
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if (parm->type != (dev->multiplanar ? |
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V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE : |
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V4L2_BUF_TYPE_VIDEO_CAPTURE)) |
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return -EINVAL; |
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parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; |
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parm->parm.capture.timeperframe = dev->timeperframe_tch_cap; |
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parm->parm.capture.readbuffers = 1; |
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return 0; |
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} |
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int vivid_enum_input_tch(struct file *file, void *priv, struct v4l2_input *inp) |
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{ |
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if (inp->index) |
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return -EINVAL; |
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inp->type = V4L2_INPUT_TYPE_TOUCH; |
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strscpy(inp->name, "Vivid Touch", sizeof(inp->name)); |
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inp->capabilities = 0; |
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return 0; |
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} |
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int vivid_g_input_tch(struct file *file, void *priv, unsigned int *i) |
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{ |
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*i = 0; |
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return 0; |
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} |
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int vivid_set_touch(struct vivid_dev *dev, unsigned int i) |
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{ |
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struct v4l2_pix_format *f = &dev->tch_format; |
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if (i) |
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return -EINVAL; |
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f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; |
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f->width = VIVID_TCH_WIDTH; |
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f->height = VIVID_TCH_HEIGHT; |
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f->field = V4L2_FIELD_NONE; |
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f->colorspace = V4L2_COLORSPACE_RAW; |
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f->bytesperline = f->width * sizeof(s16); |
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f->sizeimage = f->width * f->height * sizeof(s16); |
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return 0; |
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} |
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int vivid_s_input_tch(struct file *file, void *priv, unsigned int i) |
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{ |
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return vivid_set_touch(video_drvdata(file), i); |
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} |
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static void vivid_fill_buff_noise(__s16 *tch_buf, int size) |
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{ |
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int i; |
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/* Fill 10% of the values within range -3 and 3, zero the others */ |
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for (i = 0; i < size; i++) { |
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unsigned int rand = get_random_int(); |
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if (rand % 10) |
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tch_buf[i] = 0; |
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else |
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tch_buf[i] = (rand / 10) % 7 - 3; |
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} |
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} |
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static inline int get_random_pressure(void) |
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{ |
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return get_random_int() % VIVID_PRESSURE_LIMIT; |
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} |
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static void vivid_tch_buf_set(struct v4l2_pix_format *f, |
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__s16 *tch_buf, |
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int index) |
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{ |
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unsigned int x = index % f->width; |
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unsigned int y = index / f->width; |
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unsigned int offset = VIVID_MIN_PRESSURE; |
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tch_buf[index] = offset + get_random_pressure(); |
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offset /= 2; |
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if (x) |
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tch_buf[index - 1] = offset + get_random_pressure(); |
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if (x < f->width - 1) |
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tch_buf[index + 1] = offset + get_random_pressure(); |
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if (y) |
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tch_buf[index - f->width] = offset + get_random_pressure(); |
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if (y < f->height - 1) |
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tch_buf[index + f->width] = offset + get_random_pressure(); |
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offset /= 2; |
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if (x && y) |
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tch_buf[index - 1 - f->width] = offset + get_random_pressure(); |
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if (x < f->width - 1 && y) |
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tch_buf[index + 1 - f->width] = offset + get_random_pressure(); |
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if (x && y < f->height - 1) |
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tch_buf[index - 1 + f->width] = offset + get_random_pressure(); |
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if (x < f->width - 1 && y < f->height - 1) |
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tch_buf[index + 1 + f->width] = offset + get_random_pressure(); |
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} |
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void vivid_fillbuff_tch(struct vivid_dev *dev, struct vivid_buffer *buf) |
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{ |
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struct v4l2_pix_format *f = &dev->tch_format; |
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int size = f->width * f->height; |
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int x, y, xstart, ystart, offset_x, offset_y; |
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unsigned int test_pattern, test_pat_idx, rand; |
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__s16 *tch_buf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); |
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buf->vb.sequence = dev->touch_cap_seq_count; |
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test_pattern = (buf->vb.sequence / TCH_SEQ_COUNT) % TEST_CASE_MAX; |
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test_pat_idx = buf->vb.sequence % TCH_SEQ_COUNT; |
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vivid_fill_buff_noise(tch_buf, size); |
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if (test_pat_idx >= TCH_PATTERN_COUNT) |
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return; |
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if (test_pat_idx == 0) |
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dev->tch_pat_random = get_random_int(); |
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rand = dev->tch_pat_random; |
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switch (test_pattern) { |
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case SINGLE_TAP: |
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if (test_pat_idx == 2) |
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vivid_tch_buf_set(f, tch_buf, rand % size); |
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break; |
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case DOUBLE_TAP: |
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if (test_pat_idx == 2 || test_pat_idx == 4) |
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vivid_tch_buf_set(f, tch_buf, rand % size); |
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break; |
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case TRIPLE_TAP: |
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if (test_pat_idx == 2 || test_pat_idx == 4 || test_pat_idx == 6) |
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vivid_tch_buf_set(f, tch_buf, rand % size); |
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break; |
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case MOVE_LEFT_TO_RIGHT: |
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vivid_tch_buf_set(f, tch_buf, |
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(rand % f->height) * f->width + |
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test_pat_idx * |
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(f->width / TCH_PATTERN_COUNT)); |
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break; |
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case ZOOM_IN: |
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x = f->width / 2; |
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y = f->height / 2; |
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offset_x = ((TCH_PATTERN_COUNT - 1 - test_pat_idx) * x) / |
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TCH_PATTERN_COUNT; |
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offset_y = ((TCH_PATTERN_COUNT - 1 - test_pat_idx) * y) / |
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TCH_PATTERN_COUNT; |
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vivid_tch_buf_set(f, tch_buf, |
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(x - offset_x) + f->width * (y - offset_y)); |
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vivid_tch_buf_set(f, tch_buf, |
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(x + offset_x) + f->width * (y + offset_y)); |
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break; |
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case ZOOM_OUT: |
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x = f->width / 2; |
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y = f->height / 2; |
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offset_x = (test_pat_idx * x) / TCH_PATTERN_COUNT; |
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offset_y = (test_pat_idx * y) / TCH_PATTERN_COUNT; |
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vivid_tch_buf_set(f, tch_buf, |
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(x - offset_x) + f->width * (y - offset_y)); |
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vivid_tch_buf_set(f, tch_buf, |
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(x + offset_x) + f->width * (y + offset_y)); |
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break; |
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case PALM_PRESS: |
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for (x = 0; x < f->width; x++) |
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for (y = f->height / 2; y < f->height; y++) |
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tch_buf[x + f->width * y] = VIVID_MIN_PRESSURE + |
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get_random_pressure(); |
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break; |
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case MULTIPLE_PRESS: |
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/* 16 pressure points */ |
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for (y = 0; y < 4; y++) { |
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for (x = 0; x < 4; x++) { |
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ystart = (y * f->height) / 4 + f->height / 8; |
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xstart = (x * f->width) / 4 + f->width / 8; |
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vivid_tch_buf_set(f, tch_buf, |
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ystart * f->width + xstart); |
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} |
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} |
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break; |
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} |
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#ifdef __BIG_ENDIAN__ |
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for (x = 0; x < size; x++) |
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tch_buf[x] = (__force s16)__cpu_to_le16((u16)tch_buf[x]); |
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#endif |
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}
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