Support to emulate touch devices in vivid driver. Signed-off-by: Vandana BN <bnvandana@xxxxxxxxx> --- Incorporate changes from https://patchwork.linuxtv.org/patch/59782/, to avoid the mutex unlocking/relocking around the kthread_stop. --- drivers/media/platform/vivid/Makefile | 3 +- drivers/media/platform/vivid/vivid-core.c | 162 +++++++++- drivers/media/platform/vivid/vivid-core.h | 23 ++ drivers/media/platform/vivid/vivid-ctrls.c | 11 + .../platform/vivid/vivid-kthread-touch.c | 207 +++++++++++++ .../platform/vivid/vivid-kthread-touch.h | 13 + .../media/platform/vivid/vivid-touch-cap.c | 286 ++++++++++++++++++ .../media/platform/vivid/vivid-touch-cap.h | 38 +++ 8 files changed, 731 insertions(+), 12 deletions(-) create mode 100644 drivers/media/platform/vivid/vivid-kthread-touch.c create mode 100644 drivers/media/platform/vivid/vivid-kthread-touch.h create mode 100644 drivers/media/platform/vivid/vivid-touch-cap.c create mode 100644 drivers/media/platform/vivid/vivid-touch-cap.h diff --git a/drivers/media/platform/vivid/Makefile b/drivers/media/platform/vivid/Makefile index e8a50c506dc9..b12ad0152a3e 100644 --- a/drivers/media/platform/vivid/Makefile +++ b/drivers/media/platform/vivid/Makefile @@ -3,7 +3,8 @@ vivid-objs := vivid-core.o vivid-ctrls.o vivid-vid-common.o vivid-vbi-gen.o \ vivid-vid-cap.o vivid-vid-out.o vivid-kthread-cap.o vivid-kthread-out.o \ vivid-radio-rx.o vivid-radio-tx.o vivid-radio-common.o \ vivid-rds-gen.o vivid-sdr-cap.o vivid-vbi-cap.o vivid-vbi-out.o \ - vivid-osd.o vivid-meta-cap.o vivid-meta-out.o + vivid-osd.o vivid-meta-cap.o vivid-meta-out.o \ + vivid-kthread-touch.o vivid-touch-cap.o ifeq ($(CONFIG_VIDEO_VIVID_CEC),y) vivid-objs += vivid-cec.o endif diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c index dadfc59c92c5..cc7807dd0a36 100644 --- a/drivers/media/platform/vivid/vivid-core.c +++ b/drivers/media/platform/vivid/vivid-core.c @@ -39,6 +39,7 @@ #include "vivid-ctrls.h" #include "vivid-meta-cap.h" #include "vivid-meta-out.h" +#include "vivid-touch-cap.h" #define VIVID_MODULE_NAME "vivid" @@ -89,6 +90,10 @@ static int meta_out_nr[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = -1 }; module_param_array(meta_out_nr, int, NULL, 0444); MODULE_PARM_DESC(meta_out_nr, " videoX start number, -1 is autodetect"); +static int touch_cap_nr[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = -1 }; +module_param_array(touch_cap_nr, int, NULL, 0444); +MODULE_PARM_DESC(touch_cap_nr, " v4l-touchX start number, -1 is autodetect"); + static int ccs_cap_mode[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = -1 }; module_param_array(ccs_cap_mode, int, NULL, 0444); MODULE_PARM_DESC(ccs_cap_mode, " capture crop/compose/scale mode:\n" @@ -110,10 +115,10 @@ MODULE_PARM_DESC(multiplanar, " 1 (default) creates a single planar device, 2 cr * vbi-out + vid-out + meta-cap */ static unsigned int node_types[VIVID_MAX_DEVS] = { - [0 ... (VIVID_MAX_DEVS - 1)] = 0x61d3d + [0 ... (VIVID_MAX_DEVS - 1)] = 0xe1d3d }; module_param_array(node_types, uint, NULL, 0444); -MODULE_PARM_DESC(node_types, " node types, default is 0x61d3d. Bitmask with the following meaning:\n" +MODULE_PARM_DESC(node_types, " node types, default is 0xe1d3d. Bitmask with the following meaning:\n" "\t\t bit 0: Video Capture node\n" "\t\t bit 2-3: VBI Capture node: 0 = none, 1 = raw vbi, 2 = sliced vbi, 3 = both\n" "\t\t bit 4: Radio Receiver node\n" @@ -123,7 +128,8 @@ MODULE_PARM_DESC(node_types, " node types, default is 0x61d3d. Bitmask with the "\t\t bit 12: Radio Transmitter node\n" "\t\t bit 16: Framebuffer for testing overlays\n" "\t\t bit 17: Metadata Capture node\n" - "\t\t bit 18: Metadata Output node\n"); + "\t\t bit 18: Metadata Output node\n" + "\t\t bit 19: Touch Capture node\n"); /* Default: 4 inputs */ static unsigned num_inputs[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = 4 }; @@ -223,7 +229,8 @@ static int vidioc_querycap(struct file *file, void *priv, dev->vbi_cap_caps | dev->vbi_out_caps | dev->radio_rx_caps | dev->radio_tx_caps | dev->sdr_cap_caps | dev->meta_cap_caps | - dev->meta_out_caps | V4L2_CAP_DEVICE_CAPS; + dev->meta_out_caps | dev->touch_cap_caps | + V4L2_CAP_DEVICE_CAPS; return 0; } @@ -377,6 +384,8 @@ static int vidioc_g_parm(struct file *file, void *fh, { struct video_device *vdev = video_devdata(file); + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_g_parm_tch(file, fh, parm); if (vdev->vfl_dir == VFL_DIR_RX) return vivid_vid_cap_g_parm(file, fh, parm); return vivid_vid_out_g_parm(file, fh, parm); @@ -387,6 +396,8 @@ static int vidioc_s_parm(struct file *file, void *fh, { struct video_device *vdev = video_devdata(file); + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_g_parm_tch(file, fh, parm); if (vdev->vfl_dir == VFL_DIR_RX) return vivid_vid_cap_s_parm(file, fh, parm); return -ENOTTY; @@ -432,6 +443,60 @@ static __poll_t vivid_radio_poll(struct file *file, struct poll_table_struct *wa return vivid_radio_tx_poll(file, wait); } +int vivid_enum_input(struct file *file, void *priv, struct v4l2_input *inp) +{ + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_enum_input_tch(file, priv, inp); + return vidioc_enum_input(file, priv, inp); +} + +int vivid_s_input(struct file *file, void *priv, unsigned int i) +{ + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_s_input_tch(file, priv, i); + return vidioc_s_input(file, priv, i); +} + +int vivid_enum_fmt_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) +{ + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_enum_fmt_tch(file, priv, f); + return vivid_enum_fmt_vid(file, priv, f); +} + +int vivid_g_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) +{ + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_g_fmt_tch(file, priv, f); + return vidioc_g_fmt_vid_cap(file, priv, f); +} + +int vivid_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) +{ + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_g_fmt_tch(file, priv, f); + return vidioc_try_fmt_vid_cap(file, priv, f); +} + +int vivid_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) +{ + struct video_device *vdev = video_devdata(file); + + if (vdev->vfl_type == VFL_TYPE_TOUCH) + return vivid_g_fmt_tch(file, priv, f); + return vidioc_s_fmt_vid_cap(file, priv, f); +} + static bool vivid_is_in_use(struct video_device *vdev) { unsigned long flags; @@ -453,7 +518,8 @@ static bool vivid_is_last_user(struct vivid_dev *dev) vivid_is_in_use(&dev->radio_rx_dev) + vivid_is_in_use(&dev->radio_tx_dev) + vivid_is_in_use(&dev->meta_cap_dev) + - vivid_is_in_use(&dev->meta_out_dev); + vivid_is_in_use(&dev->meta_out_dev) + + vivid_is_in_use(&dev->touch_cap_dev); return uses == 1; } @@ -481,6 +547,7 @@ static int vivid_fop_release(struct file *file) set_bit(V4L2_FL_REGISTERED, &dev->radio_tx_dev.flags); set_bit(V4L2_FL_REGISTERED, &dev->meta_cap_dev.flags); set_bit(V4L2_FL_REGISTERED, &dev->meta_out_dev.flags); + set_bit(V4L2_FL_REGISTERED, &dev->touch_cap_dev.flags); } mutex_unlock(&dev->mutex); if (file->private_data == dev->overlay_cap_owner) @@ -522,10 +589,10 @@ static const struct v4l2_file_operations vivid_radio_fops = { static const struct v4l2_ioctl_ops vivid_ioctl_ops = { .vidioc_querycap = vidioc_querycap, - .vidioc_enum_fmt_vid_cap = vivid_enum_fmt_vid, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, + .vidioc_enum_fmt_vid_cap = vivid_enum_fmt_cap, + .vidioc_g_fmt_vid_cap = vivid_g_fmt_cap, + .vidioc_try_fmt_vid_cap = vivid_try_fmt_cap, + .vidioc_s_fmt_vid_cap = vivid_s_fmt_cap, .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap_mplane, .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap_mplane, .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap_mplane, @@ -590,9 +657,9 @@ static const struct v4l2_ioctl_ops vivid_ioctl_ops = { .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, - .vidioc_enum_input = vidioc_enum_input, + .vidioc_enum_input = vivid_enum_input, .vidioc_g_input = vidioc_g_input, - .vidioc_s_input = vidioc_s_input, + .vidioc_s_input = vivid_s_input, .vidioc_s_audio = vidioc_s_audio, .vidioc_g_audio = vidioc_g_audio, .vidioc_enumaudio = vidioc_enumaudio, @@ -856,6 +923,9 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) /* do we create a metadata output device */ dev->has_meta_out = node_type & 0x40000; + /* do we create a touch capture device */ + dev->has_touch_cap = node_type & 0x80000; + /* end detecting feature set */ if (dev->has_vid_cap) { @@ -929,6 +999,10 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) if (dev->has_audio_outputs) dev->meta_out_caps |= V4L2_CAP_AUDIO; } + /* set up the capabilities of the touch capture device */ + if (dev->has_touch_cap) + dev->touch_cap_caps = V4L2_CAP_TOUCH | V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; ret = -ENOMEM; /* initialize the test pattern generator */ @@ -992,6 +1066,9 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) v4l2_disable_ioctl(&dev->meta_cap_dev, VIDIOC_S_AUDIO); v4l2_disable_ioctl(&dev->meta_cap_dev, VIDIOC_G_AUDIO); v4l2_disable_ioctl(&dev->meta_cap_dev, VIDIOC_ENUMAUDIO); + v4l2_disable_ioctl(&dev->touch_cap_dev, VIDIOC_S_AUDIO); + v4l2_disable_ioctl(&dev->touch_cap_dev, VIDIOC_G_AUDIO); + v4l2_disable_ioctl(&dev->touch_cap_dev, VIDIOC_ENUMAUDIO); } if (!dev->has_audio_outputs) { v4l2_disable_ioctl(&dev->vid_out_dev, VIDIOC_S_AUDOUT); @@ -1136,6 +1213,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) dev->fb_cap.fmt.bytesperline = dev->src_rect.width * tpg_g_twopixelsize(&dev->tpg, 0) / 2; dev->fb_cap.fmt.sizeimage = dev->src_rect.height * dev->fb_cap.fmt.bytesperline; + /* update touch configuration */ + dev->timeperframe_tch_cap.numerator = 20; + dev->timeperframe_tch_cap.denominator = 10; + vivid_set_touch(dev, 0); + /* initialize locks */ spin_lock_init(&dev->slock); mutex_init(&dev->mutex); @@ -1148,6 +1230,7 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) INIT_LIST_HEAD(&dev->sdr_cap_active); INIT_LIST_HEAD(&dev->meta_cap_active); INIT_LIST_HEAD(&dev->meta_out_active); + INIT_LIST_HEAD(&dev->touch_cap_active); INIT_LIST_HEAD(&dev->cec_work_list); spin_lock_init(&dev->cec_slock); @@ -1336,6 +1419,27 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) if (ret) goto unreg_dev; } + if (dev->has_touch_cap) { + /* initialize touch_cap queue */ + q = &dev->vb_touch_cap_q; + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; + if (!allocator) + q->io_modes |= VB2_USERPTR; + q->drv_priv = dev; + q->buf_struct_size = sizeof(struct vivid_buffer); + q->ops = &vivid_touch_cap_qops; + q->mem_ops = vivid_mem_ops[allocator]; + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->min_buffers_needed = 1; + q->lock = &dev->mutex; + q->dev = dev->v4l2_dev.dev; + q->supports_requests = true; + + ret = vb2_queue_init(q); + if (ret) + goto unreg_dev; + } #ifdef CONFIG_VIDEO_VIVID_CEC if (dev->has_vid_cap && in_type_counter[HDMI]) { @@ -1379,6 +1483,7 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) v4l2_ctrl_handler_setup(&dev->ctrl_hdl_sdr_cap); v4l2_ctrl_handler_setup(&dev->ctrl_hdl_meta_cap); v4l2_ctrl_handler_setup(&dev->ctrl_hdl_meta_out); + v4l2_ctrl_handler_setup(&dev->ctrl_hdl_touch_cap); /* finally start creating the device nodes */ if (dev->has_vid_cap) { @@ -1665,6 +1770,35 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) video_device_node_name(vfd)); } + if (dev->has_touch_cap) { + vfd = &dev->touch_cap_dev; + snprintf(vfd->name, sizeof(vfd->name), + "vivid-%03d-touch-cap", inst); + vfd->fops = &vivid_fops; + vfd->ioctl_ops = &vivid_ioctl_ops; + vfd->device_caps = dev->touch_cap_caps; + vfd->release = video_device_release_empty; + vfd->v4l2_dev = &dev->v4l2_dev; + vfd->queue = &dev->vb_touch_cap_q; + vfd->tvnorms = tvnorms_cap; + vfd->lock = &dev->mutex; + video_set_drvdata(vfd, dev); +#ifdef CONFIG_MEDIA_CONTROLLER + dev->touch_cap_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(&vfd->entity, 1, + &dev->touch_cap_pad); + if (ret) + goto unreg_dev; +#endif + ret = video_register_device(vfd, VFL_TYPE_TOUCH, + touch_cap_nr[inst]); + if (ret < 0) + goto unreg_dev; + v4l2_info(&dev->v4l2_dev, + "V4L2 touch capture device registered as %s\n", + video_device_node_name(vfd)); + } + #ifdef CONFIG_MEDIA_CONTROLLER /* Register the media device */ ret = media_device_register(&dev->mdev); @@ -1681,6 +1815,7 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) return 0; unreg_dev: + video_unregister_device(&dev->touch_cap_dev); video_unregister_device(&dev->meta_out_dev); video_unregister_device(&dev->meta_cap_dev); video_unregister_device(&dev->radio_tx_dev); @@ -1809,6 +1944,11 @@ static int vivid_remove(struct platform_device *pdev) video_device_node_name(&dev->meta_out_dev)); video_unregister_device(&dev->meta_out_dev); } + if (dev->has_touch_cap) { + v4l2_info(&dev->v4l2_dev, "unregistering %s\n", + video_device_node_name(&dev->touch_cap_dev)); + video_unregister_device(&dev->touch_cap_dev); + } cec_unregister_adapter(dev->cec_rx_adap); for (j = 0; j < MAX_OUTPUTS; j++) cec_unregister_adapter(dev->cec_tx_adap[j]); diff --git a/drivers/media/platform/vivid/vivid-core.h b/drivers/media/platform/vivid/vivid-core.h index d57066ed31f0..077f2b3eeed9 100644 --- a/drivers/media/platform/vivid/vivid-core.h +++ b/drivers/media/platform/vivid/vivid-core.h @@ -133,6 +133,7 @@ struct vivid_dev { struct media_pad sdr_cap_pad; struct media_pad meta_cap_pad; struct media_pad meta_out_pad; + struct media_pad touch_cap_pad; #endif struct v4l2_ctrl_handler ctrl_hdl_user_gen; struct v4l2_ctrl_handler ctrl_hdl_user_vid; @@ -159,6 +160,8 @@ struct vivid_dev { struct v4l2_ctrl_handler ctrl_hdl_meta_cap; struct video_device meta_out_dev; struct v4l2_ctrl_handler ctrl_hdl_meta_out; + struct video_device touch_cap_dev; + struct v4l2_ctrl_handler ctrl_hdl_touch_cap; spinlock_t slock; struct mutex mutex; @@ -173,6 +176,7 @@ struct vivid_dev { u32 radio_tx_caps; u32 meta_cap_caps; u32 meta_out_caps; + u32 touch_cap_caps; /* supported features */ bool multiplanar; @@ -200,6 +204,7 @@ struct vivid_dev { bool has_fb; bool has_meta_cap; bool has_meta_out; + bool has_touch_cap; bool can_loop_video; @@ -403,6 +408,8 @@ struct vivid_dev { struct list_head vbi_cap_active; struct vb2_queue vb_meta_cap_q; struct list_head meta_cap_active; + struct vb2_queue vb_touch_cap_q; + struct list_head touch_cap_active; /* thread for generating video capture stream */ struct task_struct *kthread_vid_cap; @@ -424,6 +431,22 @@ struct vivid_dev { u32 meta_cap_seq_count; bool meta_cap_streaming; + /* Touch capture */ + struct task_struct *kthread_touch_cap; + unsigned long jiffies_touch_cap; + u64 touch_cap_stream_start; + u32 touch_cap_seq_offset; + bool touch_cap_seq_resync; + u32 touch_cap_seq_start; + u32 touch_cap_seq_count; + bool touch_cap_streaming; + struct v4l2_fract timeperframe_tch_cap; + struct v4l2_pix_format tch_format; + int tch_test_pattern; + int tch_index; + int tch_val; + int tch_cnt; + /* video output */ const struct vivid_fmt *fmt_out; struct v4l2_fract timeperframe_vid_out; diff --git a/drivers/media/platform/vivid/vivid-ctrls.c b/drivers/media/platform/vivid/vivid-ctrls.c index b250fc3764e2..c2a5597a6480 100644 --- a/drivers/media/platform/vivid/vivid-ctrls.c +++ b/drivers/media/platform/vivid/vivid-ctrls.c @@ -1495,6 +1495,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, struct v4l2_ctrl_handler *hdl_sdr_cap = &dev->ctrl_hdl_sdr_cap; struct v4l2_ctrl_handler *hdl_meta_cap = &dev->ctrl_hdl_meta_cap; struct v4l2_ctrl_handler *hdl_meta_out = &dev->ctrl_hdl_meta_out; + struct v4l2_ctrl_handler *hdl_tch_cap = &dev->ctrl_hdl_touch_cap; struct v4l2_ctrl_config vivid_ctrl_dv_timings = { .ops = &vivid_vid_cap_ctrl_ops, @@ -1538,6 +1539,8 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_new_custom(hdl_meta_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_meta_out, 2); v4l2_ctrl_new_custom(hdl_meta_out, &vivid_ctrl_class, NULL); + v4l2_ctrl_handler_init(hdl_tch_cap, 2); + v4l2_ctrl_new_custom(hdl_tch_cap, &vivid_ctrl_class, NULL); /* User Controls */ dev->volume = v4l2_ctrl_new_std(hdl_user_aud, NULL, @@ -1890,6 +1893,13 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, return hdl_meta_out->error; dev->meta_out_dev.ctrl_handler = hdl_meta_out; } + if (dev->has_touch_cap) { + v4l2_ctrl_add_handler(hdl_tch_cap, hdl_user_gen, NULL, false); + v4l2_ctrl_add_handler(hdl_tch_cap, hdl_streaming, NULL, false); + if (hdl_tch_cap->error) + return hdl_tch_cap->error; + dev->touch_cap_dev.ctrl_handler = hdl_tch_cap; + } return 0; } @@ -1911,4 +1921,5 @@ void vivid_free_controls(struct vivid_dev *dev) v4l2_ctrl_handler_free(&dev->ctrl_hdl_fb); v4l2_ctrl_handler_free(&dev->ctrl_hdl_meta_cap); v4l2_ctrl_handler_free(&dev->ctrl_hdl_meta_out); + v4l2_ctrl_handler_free(&dev->ctrl_hdl_touch_cap); } diff --git a/drivers/media/platform/vivid/vivid-kthread-touch.c b/drivers/media/platform/vivid/vivid-kthread-touch.c new file mode 100644 index 000000000000..7ef7230c9a27 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-kthread-touch.c @@ -0,0 +1,207 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * vivid-kthread-touch.c - touch capture thread support functions. + * + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/font.h> +#include <linux/mutex.h> +#include <linux/videodev2.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/random.h> +#include <asm/div64.h> +#include <media/videobuf2-vmalloc.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> +#include <media/v4l2-rect.h> + +#include "vivid-core.h" +#include "vivid-osd.h" +#include "vivid-ctrls.h" +#include "vivid-kthread-touch.h" +#include "vivid-touch-cap.h" + +static noinline_for_stack void vivid_thread_tch_cap_tick(struct vivid_dev *dev, + int dropped_bufs) +{ + struct vivid_buffer *tch_cap_buf = NULL; + + dprintk(dev, 1, "Touch Capture Thread Tick\n"); + + spin_lock(&dev->slock); + if (!list_empty(&dev->touch_cap_active)) { + tch_cap_buf = list_entry(dev->touch_cap_active.next, + struct vivid_buffer, list); + list_del(&tch_cap_buf->list); + } + + spin_unlock(&dev->slock); + + if (tch_cap_buf) { + v4l2_ctrl_request_setup(tch_cap_buf->vb.vb2_buf.req_obj.req, + &dev->ctrl_hdl_touch_cap); + + vivid_fillbuff_tch(dev, tch_cap_buf); + v4l2_ctrl_request_complete(tch_cap_buf->vb.vb2_buf.req_obj.req, + &dev->ctrl_hdl_touch_cap); + vb2_buffer_done(&tch_cap_buf->vb.vb2_buf, dev->dqbuf_error ? + VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); + dprintk(dev, 2, "touch_cap buffer %d done\n", + tch_cap_buf->vb.vb2_buf.index); + + tch_cap_buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset; + } + dev->dqbuf_error = false; +} + +static int vivid_thread_touch_cap(void *data) +{ + struct vivid_dev *dev = data; + u64 numerators_since_start; + u64 buffers_since_start; + u64 next_jiffies_since_start; + unsigned long jiffies_since_start; + unsigned long cur_jiffies; + unsigned int wait_jiffies; + unsigned int numerator; + unsigned int denominator; + int dropped_bufs; + + dprintk(dev, 1, "Touch Capture Thread Start\n"); + + set_freezable(); + + /* Resets frame counters */ + dev->touch_cap_seq_offset = 0; + dev->touch_cap_seq_count = 0; + dev->touch_cap_seq_resync = false; + dev->jiffies_touch_cap = jiffies; + + for (;;) { + try_to_freeze(); + if (kthread_should_stop()) + break; + + if (!mutex_trylock(&dev->mutex)) { + schedule_timeout_uninterruptible(1); + continue; + } + cur_jiffies = jiffies; + if (dev->touch_cap_seq_resync) { + dev->jiffies_touch_cap = cur_jiffies; + dev->touch_cap_seq_offset = dev->touch_cap_seq_count + 1; + dev->touch_cap_seq_count = 0; + dev->cap_seq_resync = false; + } + denominator = dev->timeperframe_tch_cap.denominator; + numerator = dev->timeperframe_tch_cap.numerator; + + /* Calculate the number of jiffies since we started streaming */ + jiffies_since_start = cur_jiffies - dev->jiffies_touch_cap; + /* Get the number of buffers streamed since the start */ + buffers_since_start = (u64)jiffies_since_start * denominator + + (HZ * numerator) / 2; + do_div(buffers_since_start, HZ * numerator); + + /* + * After more than 0xf0000000 (rounded down to a multiple of + * 'jiffies-per-day' to ease jiffies_to_msecs calculation) + * jiffies have passed since we started streaming reset the + * counters and keep track of the sequence offset. + */ + if (jiffies_since_start > JIFFIES_RESYNC) { + dev->jiffies_touch_cap = cur_jiffies; + dev->cap_seq_offset = buffers_since_start; + buffers_since_start = 0; + } + dropped_bufs = buffers_since_start + dev->touch_cap_seq_offset - dev->touch_cap_seq_count; + dev->touch_cap_seq_count = buffers_since_start + dev->touch_cap_seq_offset; + + vivid_thread_tch_cap_tick(dev, dropped_bufs); + + /* + * Calculate the number of 'numerators' streamed + * since we started, including the current buffer. + */ + numerators_since_start = ++buffers_since_start * numerator; + + /* And the number of jiffies since we started */ + jiffies_since_start = jiffies - dev->jiffies_touch_cap; + + mutex_unlock(&dev->mutex); + + /* + * Calculate when that next buffer is supposed to start + * in jiffies since we started streaming. + */ + next_jiffies_since_start = numerators_since_start * HZ + + denominator / 2; + do_div(next_jiffies_since_start, denominator); + /* If it is in the past, then just schedule asap */ + if (next_jiffies_since_start < jiffies_since_start) + next_jiffies_since_start = jiffies_since_start; + + wait_jiffies = next_jiffies_since_start - jiffies_since_start; + schedule_timeout_interruptible(wait_jiffies ? wait_jiffies : 1); + } + dprintk(dev, 1, "Touch Capture Thread End\n"); + return 0; +} + +int vivid_start_generating_touch_cap(struct vivid_dev *dev) +{ + dprintk(dev, 1, "%s\n", __func__); + + if (dev->kthread_touch_cap) { + dev->touch_cap_streaming = true; + return 0; + } + + dev->kthread_touch_cap = kthread_run(vivid_thread_touch_cap, dev, + "%s-tch-cap", dev->v4l2_dev.name); + + if (IS_ERR(dev->kthread_touch_cap)) { + int err = PTR_ERR(dev->kthread_touch_cap); + + dev->kthread_touch_cap = NULL; + v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); + return err; + } + dev->touch_cap_streaming = true; + dprintk(dev, 1, "returning from %s\n", __func__); + return 0; +} + +void vivid_stop_generating_touch_cap(struct vivid_dev *dev) +{ + dprintk(dev, 1, "%s\n", __func__); + + if (!dev->kthread_touch_cap) + return; + + dev->touch_cap_streaming = false; + + while (!list_empty(&dev->touch_cap_active)) { + struct vivid_buffer *buf; + + buf = list_entry(dev->touch_cap_active.next, + struct vivid_buffer, list); + list_del(&buf->list); + v4l2_ctrl_request_complete(buf->vb.vb2_buf.req_obj.req, + &dev->ctrl_hdl_touch_cap); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + dprintk(dev, 2, "touch_cap buffer %d done\n", + buf->vb.vb2_buf.index); + } + + kthread_stop(dev->kthread_touch_cap); + dev->kthread_touch_cap = NULL; +} diff --git a/drivers/media/platform/vivid/vivid-kthread-touch.h b/drivers/media/platform/vivid/vivid-kthread-touch.h new file mode 100644 index 000000000000..ecf79b46209e --- /dev/null +++ b/drivers/media/platform/vivid/vivid-kthread-touch.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * vivid-kthread-cap.h - video/vbi capture thread support functions. + * + */ + +#ifndef _VIVID_KTHREAD_CAP_H_ +#define _VIVID_KTHREAD_CAP_H_ + +int vivid_start_generating_touch_cap(struct vivid_dev *dev); +void vivid_stop_generating_touch_cap(struct vivid_dev *dev); + +#endif diff --git a/drivers/media/platform/vivid/vivid-touch-cap.c b/drivers/media/platform/vivid/vivid-touch-cap.c new file mode 100644 index 000000000000..56af43a09a7f --- /dev/null +++ b/drivers/media/platform/vivid/vivid-touch-cap.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * vivid-touch-cap.c - touch support functions. + */ + +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <linux/usb/video.h> + +#include "vivid-core.h" +#include "vivid-kthread-touch.h" +#include "vivid-touch-cap.h" + +static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + unsigned int size = sizeof(struct vivid_touch_buf); + + if (*nplanes) { + if (sizes[0] < size) + return -EINVAL; + } else { + sizes[0] = size; + } + + if (vq->num_buffers + *nbuffers < 2) + *nbuffers = 2 - vq->num_buffers; + + *nplanes = 1; + return 0; +} + +static int touch_cap_buf_prepare(struct vb2_buffer *vb) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + unsigned int size = sizeof(struct vivid_touch_buf); + + dprintk(dev, 1, "%s\n", __func__); + + if (dev->buf_prepare_error) { + /* + * Error injection: test what happens if buf_prepare() returns + * an error. + */ + dev->buf_prepare_error = false; + return -EINVAL; + } + if (vb2_plane_size(vb, 0) < size) { + dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", + __func__, vb2_plane_size(vb, 0), size); + return -EINVAL; + } + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void touch_cap_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb); + + dprintk(dev, 1, "%s\n", __func__); + + spin_lock(&dev->slock); + list_add_tail(&buf->list, &dev->touch_cap_active); + spin_unlock(&dev->slock); +} + +static int touch_cap_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + int err; + + dprintk(dev, 1, "%s\n", __func__); + dev->touch_cap_seq_count = 0; + dev->tch_test_pattern = 0; + if (dev->start_streaming_error) { + dev->start_streaming_error = false; + err = -EINVAL; + } else { + err = vivid_start_generating_touch_cap(dev); + } + if (err) { + struct vivid_buffer *buf, *tmp; + + list_for_each_entry_safe(buf, tmp, + &dev->touch_cap_active, list) { + list_del(&buf->list); + vb2_buffer_done(&buf->vb.vb2_buf, + VB2_BUF_STATE_QUEUED); + } + } + return err; +} + +/* abort streaming and wait for last buffer */ +static void touch_cap_stop_streaming(struct vb2_queue *vq) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vq); + + dprintk(dev, 1, "%s\n", __func__); + vivid_stop_generating_touch_cap(dev); +} + +static void touch_cap_buf_request_complete(struct vb2_buffer *vb) +{ + struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); + + v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_touch_cap); +} + +const struct vb2_ops vivid_touch_cap_qops = { + .queue_setup = touch_cap_queue_setup, + .buf_prepare = touch_cap_buf_prepare, + .buf_queue = touch_cap_buf_queue, + .start_streaming = touch_cap_start_streaming, + .stop_streaming = touch_cap_stop_streaming, + .buf_request_complete = touch_cap_buf_request_complete, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +int vivid_enum_fmt_tch(struct file *file, void *priv, struct v4l2_fmtdesc *f) +{ + struct vivid_dev *dev = video_drvdata(file); + + if (f->index) + return -EINVAL; + + dprintk(dev, 1, "%s\n", __func__); + + f->pixelformat = V4L2_TCH_FMT_TU16; + return 0; +} + +int vivid_g_fmt_tch(struct file *file, void *priv, struct v4l2_format *f) +{ + struct vivid_dev *dev = video_drvdata(file); + + dprintk(dev, 1, "%s\n", __func__); + f->fmt.pix = dev->tch_format; + return 0; +} + +int vivid_g_parm_tch(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct vivid_dev *dev = video_drvdata(file); + + dprintk(dev, 1, "%s\n", __func__); + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; + parm->parm.capture.timeperframe = dev->timeperframe_tch_cap; + parm->parm.capture.readbuffers = 1; + return 0; +} + +int vivid_enum_input_tch(struct file *file, void *priv, struct v4l2_input *inp) +{ + struct vivid_dev *dev = video_drvdata(file); + + dprintk(dev, 1, "%s\n", __func__); + + if (inp->index >= dev->num_inputs) + return -EINVAL; + + inp->type = V4L2_INPUT_TYPE_TOUCH; + snprintf(inp->name, sizeof(inp->name), "Vivid Touch %u", + dev->input_name_counter[inp->index]); + inp->capabilities = 0; + return 0; +} + +int vivid_set_touch(struct vivid_dev *dev, unsigned int i) +{ + struct v4l2_pix_format *f = &dev->tch_format; + + if (i >= dev->num_inputs) + return -EINVAL; + + dev->input = i; + f->pixelformat = V4L2_TCH_FMT_TU16; + f->width = VIVID_TCH_WIDTH; + f->height = VIVID_TCH_HEIGHT; + f->field = V4L2_FIELD_NONE; + f->colorspace = V4L2_COLORSPACE_RAW; + f->bytesperline = f->width * sizeof(u16); + f->sizeimage = f->width * f->height * sizeof(u16); + return 0; +} + +int vivid_s_input_tch(struct file *file, void *priv, unsigned int i) +{ + return vivid_set_touch(video_drvdata(file), i); +} + +void vivid_fillbuff_tch(struct vivid_dev *dev, struct vivid_buffer *buf) +{ + int size = VIVID_TCH_WIDTH * VIVID_TCH_HEIGHT; + int index = 0, x, y, xstart, ystart; + struct vivid_touch_buf *tch_buf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); + + buf->vb.sequence = dev->touch_cap_seq_count; + + memset(tch_buf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0)); + + tch_buf->test_pattern = dev->tch_test_pattern; + + switch (dev->tch_test_pattern) { + case SINGLE_TAP: + case DOUBLE_TAP: + case TRIPLE_TAP: + if (!dev->tch_cnt) { + dev->tch_index = get_random_int() % size; + dev->tch_val = buf->vb.sequence + dev->tch_index; + } + tch_buf->buf[dev->tch_index] = dev->tch_val; + dev->tch_cnt++; + if (dev->tch_cnt > dev->tch_test_pattern) { + dev->tch_test_pattern++; + dev->tch_cnt = 0; + } + break; + case SWAP_LEFT_RIGHT: + x = get_random_int() % VIVID_TCH_WIDTH; + for (index = x; index < VIVID_TCH_WIDTH ; index++) + tch_buf->buf[index] = buf->vb.sequence + index; + dev->tch_test_pattern++; + dev->tch_index = 0; + break; + case ZOOM_IN: + case ZOOM_OUT: + x = VIVID_TCH_WIDTH / 2; + y = VIVID_TCH_HEIGHT / 2; + if (!dev->tch_index) { + index = x + VIVID_TCH_WIDTH * y; + tch_buf->buf[index] = buf->vb.sequence + index; + if (dev->tch_test_pattern == ZOOM_OUT) + dev->tch_test_pattern++; + } else { + index = (x - dev->tch_index) + VIVID_TCH_WIDTH * (y - dev->tch_index); + tch_buf->buf[index] = buf->vb.sequence + index; + index = (x + dev->tch_index) + VIVID_TCH_WIDTH * (y + dev->tch_index); + tch_buf->buf[index] = buf->vb.sequence + index; + } + if (dev->tch_test_pattern == ZOOM_IN) { + dev->tch_index++; + if (x + dev->tch_index >= VIVID_TCH_WIDTH || + y + dev->tch_index >= VIVID_TCH_HEIGHT) + dev->tch_test_pattern++; + } + if (dev->tch_test_pattern == ZOOM_OUT) + dev->tch_index--; + break; + case PALM_PRESS: + xstart = VIVID_TCH_WIDTH - VIVID_TCH_WIDTH / 4; + ystart = VIVID_TCH_HEIGHT - VIVID_TCH_HEIGHT / 4; + for (x = xstart; x < VIVID_TCH_WIDTH; x++) { + for (y = ystart; y < VIVID_TCH_HEIGHT; y++) { + index = x + VIVID_TCH_WIDTH * y; + tch_buf->buf[index] = buf->vb.sequence + index; + } + } + dev->tch_test_pattern++; + break; + case MULTIPLE_PRESS: + /*16 pressure points*/ + for (x = 0; x < 16; x++) { + index = get_random_int() % size; + tch_buf->buf[index] = buf->vb.sequence + index; + } + dev->tch_test_pattern++; + break; + } + + if (dev->tch_test_pattern == TEST_CASE_MAX) + dev->tch_test_pattern = SINGLE_TAP; +} diff --git a/drivers/media/platform/vivid/vivid-touch-cap.h b/drivers/media/platform/vivid/vivid-touch-cap.h new file mode 100644 index 000000000000..6a159c91af87 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-touch-cap.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * vivid-touch-cap.h - touch support functions. + */ +#ifndef _VIVID_TOUCH_CAP_H_ +#define _VIVID_TOUCH_CAP_H_ + +#define VIVID_TCH_HEIGHT 24 +#define VIVID_TCH_WIDTH 14 + +enum vivid_tch_test { + SINGLE_TAP, + DOUBLE_TAP, + TRIPLE_TAP, + SWAP_LEFT_RIGHT, + ZOOM_IN, + ZOOM_OUT, + PALM_PRESS, + MULTIPLE_PRESS, + TEST_CASE_MAX +}; + +struct vivid_touch_buf { + u16 buf[VIVID_TCH_WIDTH * VIVID_TCH_HEIGHT]; + int test_pattern; +}; + +extern const struct vb2_ops vivid_touch_cap_qops; + +int vivid_enum_fmt_tch(struct file *file, void *priv, struct v4l2_fmtdesc *f); +int vivid_g_fmt_tch(struct file *file, void *priv, struct v4l2_format *f); +int vivid_enum_input_tch(struct file *file, void *priv, struct v4l2_input *inp); +int vivid_s_input_tch(struct file *file, void *priv, unsigned int i); +void vivid_fillbuff_tch(struct vivid_dev *dev, struct vivid_buffer *buf); +int vivid_set_touch(struct vivid_dev *dev, unsigned int i); +int vivid_g_parm_tch(struct file *file, void *priv, + struct v4l2_streamparm *parm); +#endif -- 2.17.1
