@@ -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
@@ -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 +443,94 @@ static __poll_t vivid_radio_poll(struct file *file, struct poll_table_struct *wa
return vivid_radio_tx_poll(file, wait);
}
+static 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);
+}
+
+static int vivid_g_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_g_input_tch(file, priv, i);
+ return vidioc_g_input(file, priv, i);
+}
+
+static 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);
+}
+
+static 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);
+}
+
+static 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);
+}
+
+static 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);
+}
+
+static 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 int vivid_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct video_device *vdev = video_devdata(file);
+
+ if (vdev->vfl_type == VFL_TYPE_TOUCH)
+ return vivid_enum_framesizes_tch(file, fh, fsize);
+ return vidioc_enum_framesizes(file, fh, fsize);
+}
+
+static int vivid_enum_frameintervals(struct file *file, void *priv,
+ struct v4l2_frmivalenum *fival)
+{
+ struct video_device *vdev = video_devdata(file);
+
+ if (vdev->vfl_type == VFL_TYPE_TOUCH)
+ return vivid_enum_frameintervals_tch(file, priv, fival);
+ return vidioc_enum_frameintervals(file, priv, fival);
+}
+
static bool vivid_is_in_use(struct video_device *vdev)
{
unsigned long flags;
@@ -453,7 +552,8 @@ 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 +581,7 @@ 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 +623,10 @@ 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,
@@ -565,8 +666,8 @@ static const struct v4l2_ioctl_ops vivid_ioctl_ops = {
.vidioc_s_fmt_sdr_cap = vidioc_s_fmt_sdr_cap,
.vidioc_overlay = vidioc_overlay,
- .vidioc_enum_framesizes = vidioc_enum_framesizes,
- .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+ .vidioc_enum_framesizes = vivid_enum_framesizes,
+ .vidioc_enum_frameintervals = vivid_enum_frameintervals,
.vidioc_g_parm = vidioc_g_parm,
.vidioc_s_parm = vidioc_s_parm,
@@ -590,9 +691,9 @@ 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_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
+ .vidioc_enum_input = vivid_enum_input,
+ .vidioc_g_input = vivid_g_input,
+ .vidioc_s_input = vivid_s_input,
.vidioc_s_audio = vidioc_s_audio,
.vidioc_g_audio = vidioc_g_audio,
.vidioc_enumaudio = vidioc_enumaudio,
@@ -921,6 +1022,9 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
dev->has_scaler_out ? 'Y' : 'N');
}
+ /* do we create a touch capture device */
+ dev->has_touch_cap = node_type & 0x80000;
+
/* end detecting feature set */
if (dev->has_vid_cap) {
@@ -994,6 +1098,10 @@ 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 */
@@ -1201,6 +1309,11 @@ 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);
@@ -1213,6 +1326,7 @@ 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);
@@ -1294,6 +1408,15 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
goto unreg_dev;
}
+ if (dev->has_touch_cap) {
+ /* initialize touch_cap queue */
+ ret = vivid_create_queue(dev, &dev->vb_touch_cap_q,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE, 1,
+ &vivid_touch_cap_qops);
+ if (ret)
+ goto unreg_dev;
+ }
+
if (dev->has_fb) {
/* Create framebuffer for testing capture/output overlay */
ret = vivid_fb_init(dev);
@@ -1345,6 +1468,7 @@ 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) {
@@ -1635,6 +1759,35 @@ 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);
@@ -1651,6 +1804,7 @@ 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);
@@ -1778,6 +1932,11 @@ 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]);
@@ -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;
@@ -201,6 +205,7 @@ struct vivid_dev {
bool has_meta_cap;
bool has_meta_out;
bool has_tv_tuner;
+ bool has_touch_cap;
bool can_loop_video;
@@ -404,6 +409,8 @@ 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;
@@ -425,6 +432,21 @@ 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_cnt;
+
/* video output */
const struct vivid_fmt *fmt_out;
struct v4l2_fract timeperframe_vid_out;
@@ -1508,6 +1508,7 @@ 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,
@@ -1551,6 +1552,8 @@ 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,
@@ -1904,6 +1907,13 @@ 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;
}
@@ -1925,4 +1935,5 @@ 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);
}
new file mode 100644
@@ -0,0 +1,187 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * vivid-kthread-touch.c - touch capture thread support functions.
+ *
+ */
+
+#include <linux/freezer.h>
+#include "vivid-core.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;
+}
new file mode 100644
@@ -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
new file mode 100644
@@ -0,0 +1,324 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * vivid-touch-cap.c - touch support functions.
+ */
+
+#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[])
+{
+ struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ struct v4l2_pix_format *f = &dev->tch_format;
+ unsigned int size = f->sizeimage;
+
+ 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);
+ struct v4l2_pix_format *f = &dev->tch_format;
+ unsigned int size = f->sizeimage;
+
+ 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 = SINGLE_TAP;
+ dev->tch_cnt = 1;
+ 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)
+ 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_g_input_tch(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+int vivid_set_touch(struct vivid_dev *dev, unsigned int i)
+{
+ struct v4l2_pix_format *f = &dev->tch_format;
+
+ if (i)
+ return -EINVAL;
+
+ 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);
+}
+
+int vivid_enum_frameintervals_tch(struct file *file, void *priv,
+ struct v4l2_frmivalenum *fival)
+{
+ struct vivid_dev *dev = video_drvdata(file);
+ struct v4l2_pix_format *f = &dev->tch_format;
+
+ if (fival->index)
+ return -EINVAL;
+ if (fival->width != f->width ||
+ fival->height != f->height)
+ return -EINVAL;
+
+ fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+ fival->discrete = dev->timeperframe_tch_cap;
+ return 0;
+}
+
+int vivid_enum_framesizes_tch(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct vivid_dev *dev = video_drvdata(file);
+ struct v4l2_pix_format *f = &dev->tch_format;
+
+ if (fsize->index)
+ return -EINVAL;
+ if (fsize->pixel_format != V4L2_TCH_FMT_TU16)
+ return -EINVAL;
+
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete.width = f->width;
+ fsize->discrete.height = f->height;
+ return 0;
+}
+
+void vivid_fillbuff_tch(struct vivid_dev *dev, struct vivid_buffer *buf)
+{
+ struct v4l2_pix_format *f = &dev->tch_format;
+ int size = f->width * f->height;
+ int index = 0, x, y, xstart, ystart;
+ __u16 *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));
+
+ switch (dev->tch_test_pattern) {
+ case SINGLE_TAP:
+ case DOUBLE_TAP:
+ case TRIPLE_TAP:
+ if (dev->tch_cnt == 1)
+ dev->tch_index = get_random_int() % size;
+ if (dev->tch_cnt % 2)
+ tch_buf[dev->tch_index] = get_random_int() % VIVID_MAX_PRESSURE;
+ dev->tch_cnt++;
+ if (dev->tch_cnt > dev->tch_test_pattern * 2) {
+ dev->tch_test_pattern++;
+ dev->tch_cnt = 1;
+ }
+ break;
+ case MOVE_LEFT_TO_RIGHT:
+ x = get_random_int() % f->width;
+ for (index = x; index < f->width ; index++)
+ tch_buf[index] = get_random_int() % VIVID_MAX_PRESSURE;
+ dev->tch_test_pattern++;
+ dev->tch_index = 0;
+ break;
+ case ZOOM_IN:
+ case ZOOM_OUT:
+ x = f->width / 2;
+ y = f->height/ 2;
+ if (!dev->tch_index) {
+ index = x + f->width * y;
+ tch_buf[index] = get_random_int() % VIVID_MAX_PRESSURE;
+ if (dev->tch_test_pattern == ZOOM_OUT)
+ dev->tch_test_pattern++;
+ } else {
+ index = (x - dev->tch_index) + f->width * (y - dev->tch_index);
+ tch_buf[index] = get_random_int() % VIVID_MAX_PRESSURE;
+ index = (x + dev->tch_index) + f->width * (y + dev->tch_index);
+ tch_buf[index] = get_random_int() % VIVID_MAX_PRESSURE;
+ }
+ if (dev->tch_test_pattern == ZOOM_IN) {
+ dev->tch_index++;
+ if (x + dev->tch_index >= f->width ||
+ y + dev->tch_index >= f->height)
+ dev->tch_test_pattern++;
+ }
+ if (dev->tch_test_pattern == ZOOM_OUT)
+ dev->tch_index--;
+ break;
+ case PALM_PRESS:
+ xstart = f->width - f->width / 4;
+ ystart = f->height - f->height / 4;
+ for (x = xstart; x < f->width; x++) {
+ for (y = ystart; y < f->height; y++) {
+ index = x + f->width * y;
+ tch_buf[index] = get_random_int() % VIVID_MAX_PRESSURE;
+ }
+ }
+ dev->tch_test_pattern++;
+ break;
+ case MULTIPLE_PRESS:
+ /*16 pressure points*/
+ for (x = 0; x < 16; x++) {
+ index = get_random_int() % size;
+ tch_buf[index] = get_random_int() % VIVID_MAX_PRESSURE;
+ }
+ dev->tch_test_pattern++;
+ break;
+ }
+
+ if (dev->tch_test_pattern == TEST_CASE_MAX) {
+ dev->tch_test_pattern = SINGLE_TAP;
+ dev->tch_cnt = 1;
+ }
+}
new file mode 100644
@@ -0,0 +1,39 @@
+/* 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
+#define VIVID_MAX_PRESSURE 65535
+
+enum vivid_tch_test {
+ SINGLE_TAP = 1,
+ DOUBLE_TAP,
+ TRIPLE_TAP,
+ MOVE_LEFT_TO_RIGHT,
+ ZOOM_IN,
+ ZOOM_OUT,
+ PALM_PRESS,
+ MULTIPLE_PRESS,
+ TEST_CASE_MAX
+};
+
+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_g_input_tch(struct file *file, void *priv, unsigned int *i);
+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);
+int vivid_enum_frameintervals_tch(struct file *file, void *priv,
+ struct v4l2_frmivalenum *fival);
+int vivid_enum_framesizes_tch(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize);
+#endif
Support to emulate touch devices in vivid driver. Signed-off-by: Vandana BN <bnvandana@gmail.com> --- 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 | 187 +++++++++- drivers/media/platform/vivid/vivid-core.h | 22 ++ drivers/media/platform/vivid/vivid-ctrls.c | 11 + .../platform/vivid/vivid-kthread-touch.c | 187 ++++++++++ .../platform/vivid/vivid-kthread-touch.h | 13 + .../media/platform/vivid/vivid-touch-cap.c | 324 ++++++++++++++++++ .../media/platform/vivid/vivid-touch-cap.h | 39 +++ 8 files changed, 771 insertions(+), 15 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