@@ -74,7 +74,8 @@ Section 11: Cropping, Composing, Scaling
Section 12: Formats
Section 13: Capture Overlay
Section 14: Output Overlay
-Section 15: Some Future Improvements
+Section 15: CEC (Consumer Electronics Control)
+Section 16: Some Future Improvements
Section 1: Configuring the driver
@@ -364,7 +365,11 @@ For HDMI inputs it is possible to set the EDID. By default a simple EDID
is provided. You can only set the EDID for HDMI inputs. Internally, however,
the EDID is shared between all HDMI inputs.
-No interpretation is done of the EDID data.
+No interpretation is done of the EDID data with the exception of the
+physical address. See the CEC section for more details.
+
+There is a maximum of 15 HDMI inputs (if there are more, then they will be
+reduced to 15) since that's the limitation of the EDID physical address.
Section 3: Video Output
@@ -409,6 +414,9 @@ standard, and for all others a 1:1 pixel aspect ratio is returned.
An HDMI output has a valid EDID which can be obtained through VIDIOC_G_EDID.
+There is a maximum of 15 HDMI outputs (if there are more, then they will be
+reduced to 15) since that's the limitation of the EDID physical address. See
+also the CEC section for more details.
Section 4: VBI Capture
----------------------
@@ -1108,7 +1116,26 @@ capabilities will slow down the video loop considerably as a lot of checks have
to be done per pixel.
-Section 15: Some Future Improvements
+Section 15: CEC (Consumer Electronics Control)
+----------------------------------------------
+
+If there are HDMI inputs then a CEC adapter will be created that has
+the same number of input ports. This is the equivalent of e.g. a TV that
+has that number of inputs. Each HDMI output will also create a
+CEC adapter that is hooked up to the corresponding input port, or (if there
+are more outputs than inputs) is not hooked up at all. In other words,
+this is the equivalent of hooking up each output device to an input port of
+the TV. Any remaining output devices remain unconnected.
+
+The EDID that each output reads reports a unique CEC physical address that is
+based on the physical address of the EDID of the input. So if the EDID of the
+receiver has physical address A.B.0.0, then each output will see an EDID
+containing physical address A.B.C.0 where C is 1 to the number of inputs. If
+there are more outputs than inputs then the remaining outputs have a CEC adapter
+that is disabled and reports an invalid physical address.
+
+
+Section 16: Some Future Improvements
------------------------------------
Just as a reminder and in no particular order:
@@ -1121,8 +1148,6 @@ Just as a reminder and in no particular order:
- Fix sequence/field numbering when looping of video with alternate fields
- Add support for V4L2_CID_BG_COLOR for video outputs
- Add ARGB888 overlay support: better testing of the alpha channel
-- Add custom DV timings support
-- Add support for V4L2_DV_FL_REDUCED_FPS
- Improve pixel aspect support in the tpg code by passing a real v4l2_fract
- Use per-queue locks and/or per-device locks to improve throughput
- Add support to loop from a specific output to a specific input across
@@ -1133,3 +1158,4 @@ Just as a reminder and in no particular order:
- Make a thread for the RDS generation, that would help in particular for the
"Controls" RDS Rx I/O Mode as the read-only RDS controls could be updated
in real-time.
+- Changing the EDID should cause hotplug detect emulation to happen.
@@ -6,6 +6,7 @@ config VIDEO_VIVID
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
+ select MEDIA_CEC
select VIDEOBUF2_VMALLOC
default n
---help---
@@ -396,10 +396,19 @@ static int vidioc_log_status(struct file *file, void *fh)
{
struct vivid_dev *dev = video_drvdata(file);
struct video_device *vdev = video_devdata(file);
+ unsigned bus_idx;
v4l2_ctrl_log_status(file, fh);
if (vdev->vfl_dir == VFL_DIR_RX && vdev->vfl_type == VFL_TYPE_GRABBER)
tpg_log_status(&dev->tpg);
+ if (vdev->vfl_dir == VFL_DIR_RX && vdev->vfl_type == VFL_TYPE_GRABBER &&
+ dev->cec_rx_adap)
+ cec_log_status(dev->cec_rx_adap, NULL);
+ if (vdev->vfl_dir == VFL_DIR_TX && vdev->vfl_type == VFL_TYPE_GRABBER &&
+ dev->output_type[dev->output] == HDMI) {
+ bus_idx = dev->cec_output2bus_map[dev->output];
+ cec_log_status(dev->cec_tx_adap[bus_idx], NULL);
+ }
return 0;
}
@@ -646,6 +655,238 @@ static void vivid_dev_release(struct v4l2_device *v4l2_dev)
kfree(dev);
}
+static void vivid_cec_bus_free_work(struct vivid_dev *dev)
+{
+ spin_lock(&dev->cec_slock);
+ while (!list_empty(&dev->cec_work_list)) {
+ struct vivid_cec_work *cw =
+ list_first_entry(&dev->cec_work_list,
+ struct vivid_cec_work, list);
+
+ spin_unlock(&dev->cec_slock);
+ cancel_delayed_work_sync(&cw->work);
+ spin_lock(&dev->cec_slock);
+ list_del(&cw->list);
+ cec_transmit_done(cw->adap, CEC_TX_STATUS_LOW_DRIVE, 0, 0, 1, 0);
+ kfree(cw);
+ }
+ spin_unlock(&dev->cec_slock);
+}
+
+static struct cec_adapter *vivid_cec_find_dest_adap(struct vivid_dev *dev,
+ struct cec_adapter *adap,
+ u8 dest)
+{
+ unsigned i;
+
+ if (dest >= 0xf)
+ return NULL;
+
+ if (adap != dev->cec_rx_adap && dev->cec_rx_adap &&
+ dev->cec_rx_adap->is_configured &&
+ cec_has_log_addr(dev->cec_rx_adap, dest))
+ return dev->cec_rx_adap;
+
+ for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++) {
+ if (adap == dev->cec_tx_adap[i])
+ continue;
+ if (!dev->cec_tx_adap[i]->is_configured)
+ continue;
+ if (cec_has_log_addr(dev->cec_tx_adap[i], dest))
+ return dev->cec_tx_adap[i];
+ }
+ return NULL;
+}
+
+static void vivid_cec_xfer_done_worker(struct work_struct *work)
+{
+ struct vivid_cec_work *cw =
+ container_of(work, struct vivid_cec_work, work.work);
+ struct vivid_dev *dev = cw->dev;
+ struct cec_adapter *adap = cw->adap;
+ bool is_poll = cw->msg.len == 1;
+ u8 dest = cec_msg_destination(&cw->msg);
+ struct cec_adapter *dest_adap = NULL;
+ bool valid_dest;
+ unsigned i;
+
+ valid_dest = cec_msg_is_broadcast(&cw->msg);
+ if (!valid_dest) {
+ dest_adap = vivid_cec_find_dest_adap(dev, adap, dest);
+ if (dest_adap)
+ valid_dest = true;
+ }
+ cw->tx_status = valid_dest ? CEC_TX_STATUS_OK : CEC_TX_STATUS_NACK;
+ spin_lock(&dev->cec_slock);
+ dev->cec_xfer_time_jiffies = 0;
+ dev->cec_xfer_start_jiffies = 0;
+ list_del(&cw->list);
+ spin_unlock(&dev->cec_slock);
+ cec_transmit_done(cw->adap, cw->tx_status, 0, valid_dest ? 0 : 1, 0, 0);
+
+ if (!is_poll && dest_adap) {
+ /* Directed message */
+ cec_received_msg(dest_adap, &cw->msg);
+ } else if (!is_poll && valid_dest) {
+ /* Broadcast message */
+ if (adap != dev->cec_rx_adap && dev->cec_rx_adap->log_addrs.log_addr_mask)
+ cec_received_msg(dev->cec_rx_adap, &cw->msg);
+ for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++) {
+ if (adap == dev->cec_tx_adap[i] ||
+ !dev->cec_tx_adap[i]->log_addrs.log_addr_mask)
+ continue;
+ cec_received_msg(dev->cec_tx_adap[i], &cw->msg);
+ }
+ }
+ kfree(cw);
+}
+
+static void vivid_cec_xfer_try_worker(struct work_struct *work)
+{
+ struct vivid_cec_work *cw =
+ container_of(work, struct vivid_cec_work, work.work);
+ struct vivid_dev *dev = cw->dev;
+
+ spin_lock(&dev->cec_slock);
+ if (dev->cec_xfer_time_jiffies) {
+ list_del(&cw->list);
+ spin_unlock(&dev->cec_slock);
+ cec_transmit_done(cw->adap, CEC_TX_STATUS_ARB_LOST, 1, 0, 0, 0);
+ kfree(cw);
+ } else {
+ INIT_DELAYED_WORK(&cw->work, vivid_cec_xfer_done_worker);
+ dev->cec_xfer_start_jiffies = jiffies;
+ dev->cec_xfer_time_jiffies = usecs_to_jiffies(cw->usecs);
+ spin_unlock(&dev->cec_slock);
+ schedule_delayed_work(&cw->work, dev->cec_xfer_time_jiffies);
+ }
+}
+
+static int vivid_cec_adap_enable(struct cec_adapter *adap, bool enable)
+{
+ return 0;
+}
+
+static int vivid_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
+{
+ return 0;
+}
+
+/*
+ * One data bit takes 2400 us, each byte needs 10 bits so that's 24000 us
+ * per byte.
+ */
+#define USECS_PER_BYTE 24000
+
+static int vivid_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
+ u32 signal_free_time, struct cec_msg *msg)
+{
+ struct vivid_dev *dev = adap->priv;
+ struct vivid_cec_work *cw = kzalloc(sizeof(*cw), GFP_KERNEL);
+ long delta_jiffies = 0;
+
+ if (cw == NULL)
+ return -ENOMEM;
+ cw->dev = dev;
+ cw->adap = adap;
+ cw->usecs = CEC_FREE_TIME_TO_USEC(signal_free_time) +
+ msg->len * USECS_PER_BYTE;
+ cw->msg = *msg;
+
+ spin_lock(&dev->cec_slock);
+ list_add(&cw->list, &dev->cec_work_list);
+ if (dev->cec_xfer_time_jiffies == 0) {
+ INIT_DELAYED_WORK(&cw->work, vivid_cec_xfer_done_worker);
+ dev->cec_xfer_start_jiffies = jiffies;
+ dev->cec_xfer_time_jiffies = usecs_to_jiffies(cw->usecs);
+ delta_jiffies = dev->cec_xfer_time_jiffies;
+ } else {
+ INIT_DELAYED_WORK(&cw->work, vivid_cec_xfer_try_worker);
+ delta_jiffies = dev->cec_xfer_start_jiffies +
+ dev->cec_xfer_time_jiffies - jiffies;
+ }
+ spin_unlock(&dev->cec_slock);
+ schedule_delayed_work(&cw->work, delta_jiffies < 0 ? 0 : delta_jiffies);
+ return 0;
+}
+
+static int vivid_received(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ struct vivid_dev *dev = adap->priv;
+ struct cec_msg reply;
+ u8 dest = cec_msg_destination(msg);
+ u16 pa;
+ u8 disp_ctl;
+ char osd[14];
+
+ if (cec_msg_is_broadcast(msg))
+ dest = adap->log_addrs.log_addr[0];
+ cec_msg_init(&reply, dest, cec_msg_initiator(msg));
+
+ switch (cec_msg_opcode(msg)) {
+ case CEC_MSG_SET_STREAM_PATH:
+ if (!adap->is_source)
+ return -ENOMSG;
+ cec_ops_set_stream_path(msg, &pa);
+ if (pa != adap->phys_addr)
+ return -ENOMSG;
+ cec_msg_active_source(&reply, adap->phys_addr);
+ cec_transmit_msg(adap, &reply, false);
+ break;
+ case CEC_MSG_SET_OSD_STRING:
+ if (adap->is_source)
+ return -ENOMSG;
+ cec_ops_set_osd_string(msg, &disp_ctl, osd);
+ switch (disp_ctl) {
+ case CEC_OP_DISP_CTL_DEFAULT:
+ strcpy(dev->osd, osd);
+ dev->osd_jiffies = jiffies;
+ break;
+ case CEC_OP_DISP_CTL_UNTIL_CLEARED:
+ strcpy(dev->osd, osd);
+ dev->osd_jiffies = 0;
+ break;
+ case CEC_OP_DISP_CTL_CLEAR:
+ dev->osd[0] = 0;
+ dev->osd_jiffies = 0;
+ break;
+ default:
+ cec_msg_feature_abort(&reply, cec_msg_opcode(msg),
+ CEC_OP_ABORT_INVALID_OP);
+ cec_transmit_msg(adap, &reply, false);
+ break;
+ }
+ break;
+ default:
+ return -ENOMSG;
+ }
+ return 0;
+}
+
+const struct cec_adap_ops vivid_cec_adap_ops = {
+ .adap_enable = vivid_cec_adap_enable,
+ .adap_log_addr = vivid_cec_adap_log_addr,
+ .adap_transmit = vivid_cec_adap_transmit,
+ .received = vivid_received,
+};
+
+static struct cec_adapter *vivid_create_cec_adap(struct vivid_dev *dev,
+ unsigned idx,
+ struct device *parent,
+ bool is_source)
+{
+ char name[sizeof(dev->vid_out_dev.name) + 2];
+ u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS |
+ CEC_CAP_PASSTHROUGH | CEC_CAP_RC |
+ (is_source ? CEC_CAP_IS_SOURCE : 0);
+
+ snprintf(name, sizeof(name), "%s%d",
+ is_source ? dev->vid_out_dev.name : dev->vid_cap_dev.name,
+ idx);
+ return cec_create_adapter(&vivid_cec_adap_ops, dev,
+ name, caps, 1, parent);
+}
+
static int vivid_create_instance(struct platform_device *pdev, int inst)
{
static const struct v4l2_dv_timings def_dv_timings =
@@ -699,6 +940,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
dev->input_name_counter[i] = in_type_counter[dev->input_type[i]]++;
}
dev->has_audio_inputs = in_type_counter[TV] && in_type_counter[SVID];
+ if (in_type_counter[HDMI] == 16) {
+ /* The CEC physical address only allows for max 15 inputs */
+ in_type_counter[HDMI]--;
+ dev->num_inputs--;
+ }
/* how many outputs do we have and of what type? */
dev->num_outputs = num_outputs[inst];
@@ -711,6 +957,15 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
dev->output_name_counter[i] = out_type_counter[dev->output_type[i]]++;
}
dev->has_audio_outputs = out_type_counter[SVID];
+ if (out_type_counter[HDMI] == 16) {
+ /*
+ * The CEC physical address only allows for max 15 inputs,
+ * so outputs are also limited to 15 to allow for easy
+ * CEC output to input mapping.
+ */
+ out_type_counter[HDMI]--;
+ dev->num_outputs--;
+ }
/* do we create a video capture device? */
dev->has_vid_cap = node_type & 0x0001;
@@ -1025,6 +1280,17 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
INIT_LIST_HEAD(&dev->vbi_out_active);
INIT_LIST_HEAD(&dev->sdr_cap_active);
+ INIT_LIST_HEAD(&dev->cec_work_list);
+ spin_lock_init(&dev->cec_slock);
+ /*
+ * Same as create_singlethread_workqueue, but now I can use the
+ * string formatting of alloc_ordered_workqueue.
+ */
+ dev->cec_workqueue =
+ alloc_ordered_workqueue("vivid-%03d-cec", WQ_MEM_RECLAIM, inst);
+ if (!dev->cec_workqueue)
+ goto unreg_dev;
+
/* start creating the vb2 queues */
if (dev->has_vid_cap) {
/* initialize vid_cap queue */
@@ -1131,8 +1397,12 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
/* finally start creating the device nodes */
if (dev->has_vid_cap) {
+ unsigned cec_cnt = in_type_counter[HDMI];
+ struct cec_adapter *adap;
+
vfd = &dev->vid_cap_dev;
- strlcpy(vfd->name, "vivid-vid-cap", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-vid-cap", inst);
vfd->fops = &vivid_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
vfd->release = video_device_release_empty;
@@ -1147,6 +1417,23 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
vfd->lock = &dev->mutex;
video_set_drvdata(vfd, dev);
+ if (cec_cnt) {
+ adap = vivid_create_cec_adap(dev, 0, &pdev->dev, false);
+ ret = PTR_ERR_OR_ZERO(adap);
+ if (ret < 0)
+ goto unreg_dev;
+ dev->cec_rx_adap = adap;
+ ret = cec_register_adapter(adap);
+ if (ret < 0) {
+ cec_delete_adapter(adap);
+ dev->cec_rx_adap = NULL;
+ goto unreg_dev;
+ }
+ cec_s_phys_addr(adap, 0, false);
+ v4l2_info(&dev->v4l2_dev, "CEC adapter %s registered for HDMI input %d\n",
+ dev_name(&adap->devnode.dev), i);
+ }
+
ret = video_register_device(vfd, VFL_TYPE_GRABBER, vid_cap_nr[inst]);
if (ret < 0)
goto unreg_dev;
@@ -1155,8 +1442,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
}
if (dev->has_vid_out) {
+ unsigned bus_cnt = 0;
+
vfd = &dev->vid_out_dev;
- strlcpy(vfd->name, "vivid-vid-out", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-vid-out", inst);
vfd->vfl_dir = VFL_DIR_TX;
vfd->fops = &vivid_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
@@ -1172,6 +1462,34 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
vfd->lock = &dev->mutex;
video_set_drvdata(vfd, dev);
+ for (i = 0; i < dev->num_outputs; i++) {
+ struct cec_adapter *adap;
+
+ if (dev->output_type[i] != HDMI)
+ continue;
+ dev->cec_output2bus_map[i] = bus_cnt;
+ adap = vivid_create_cec_adap(dev, bus_cnt,
+ &pdev->dev, true);
+ ret = PTR_ERR_OR_ZERO(adap);
+ if (ret < 0)
+ goto unreg_dev;
+ dev->cec_tx_adap[bus_cnt] = adap;
+ ret = cec_register_adapter(adap);
+ if (ret < 0) {
+ cec_delete_adapter(adap);
+ dev->cec_tx_adap[bus_cnt] = NULL;
+ goto unreg_dev;
+ }
+ bus_cnt++;
+ if (bus_cnt <= in_type_counter[HDMI]) {
+ cec_s_phys_addr(adap, bus_cnt << 12, false);
+ } else {
+ cec_s_phys_addr(adap, 0x1000, false);
+ }
+ v4l2_info(&dev->v4l2_dev, "CEC adapter %s registered for HDMI output %d\n",
+ dev_name(&adap->devnode.dev), i);
+ }
+
ret = video_register_device(vfd, VFL_TYPE_GRABBER, vid_out_nr[inst]);
if (ret < 0)
goto unreg_dev;
@@ -1181,7 +1499,8 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
if (dev->has_vbi_cap) {
vfd = &dev->vbi_cap_dev;
- strlcpy(vfd->name, "vivid-vbi-cap", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-vbi-cap", inst);
vfd->fops = &vivid_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
vfd->release = video_device_release_empty;
@@ -1203,7 +1522,8 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
if (dev->has_vbi_out) {
vfd = &dev->vbi_out_dev;
- strlcpy(vfd->name, "vivid-vbi-out", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-vbi-out", inst);
vfd->vfl_dir = VFL_DIR_TX;
vfd->fops = &vivid_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
@@ -1226,7 +1546,8 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
if (dev->has_sdr_cap) {
vfd = &dev->sdr_cap_dev;
- strlcpy(vfd->name, "vivid-sdr-cap", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-sdr-cap", inst);
vfd->fops = &vivid_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
vfd->release = video_device_release_empty;
@@ -1244,7 +1565,8 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
if (dev->has_radio_rx) {
vfd = &dev->radio_rx_dev;
- strlcpy(vfd->name, "vivid-rad-rx", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-rad-rx", inst);
vfd->fops = &vivid_radio_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
vfd->release = video_device_release_empty;
@@ -1261,7 +1583,8 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
if (dev->has_radio_tx) {
vfd = &dev->radio_tx_dev;
- strlcpy(vfd->name, "vivid-rad-tx", sizeof(vfd->name));
+ snprintf(vfd->name, sizeof(vfd->name),
+ "vivid-%03d-rad-tx", inst);
vfd->vfl_dir = VFL_DIR_TX;
vfd->fops = &vivid_radio_fops;
vfd->ioctl_ops = &vivid_ioctl_ops;
@@ -1290,6 +1613,13 @@ unreg_dev:
video_unregister_device(&dev->vbi_cap_dev);
video_unregister_device(&dev->vid_out_dev);
video_unregister_device(&dev->vid_cap_dev);
+ cec_unregister_adapter(dev->cec_rx_adap);
+ for (i = 0; i < MAX_OUTPUTS; i++)
+ cec_unregister_adapter(dev->cec_tx_adap[i]);
+ if (dev->cec_workqueue) {
+ vivid_cec_bus_free_work(dev);
+ destroy_workqueue(dev->cec_workqueue);
+ }
free_dev:
v4l2_device_put(&dev->v4l2_dev);
return ret;
@@ -1339,8 +1669,7 @@ static int vivid_probe(struct platform_device *pdev)
static int vivid_remove(struct platform_device *pdev)
{
struct vivid_dev *dev;
- unsigned i;
-
+ unsigned i, j;
for (i = 0; i < n_devs; i++) {
dev = vivid_devs[i];
@@ -1388,6 +1717,13 @@ static int vivid_remove(struct platform_device *pdev)
unregister_framebuffer(&dev->fb_info);
vivid_fb_release_buffers(dev);
}
+ cec_unregister_adapter(dev->cec_rx_adap);
+ for (j = 0; j < MAX_OUTPUTS; j++)
+ cec_unregister_adapter(dev->cec_tx_adap[j]);
+ if (dev->cec_workqueue) {
+ vivid_cec_bus_free_work(dev);
+ destroy_workqueue(dev->cec_workqueue);
+ }
v4l2_device_put(&dev->v4l2_dev);
vivid_devs[i] = NULL;
}
@@ -21,6 +21,8 @@
#define _VIVID_CORE_H_
#include <linux/fb.h>
+#include <linux/workqueue.h>
+#include <media/cec.h>
#include <media/videobuf2-v4l2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dev.h>
@@ -132,6 +134,17 @@ enum vivid_colorspace {
#define VIVID_INVALID_SIGNAL(mode) \
((mode) == NO_SIGNAL || (mode) == NO_LOCK || (mode) == OUT_OF_RANGE)
+struct vivid_cec_work {
+ struct list_head list;
+ struct delayed_work work;
+ struct cec_adapter *adap;
+ struct vivid_dev *dev;
+ unsigned usecs;
+ unsigned timeout_ms;
+ u8 tx_status;
+ struct cec_msg msg;
+};
+
struct vivid_dev {
unsigned inst;
struct v4l2_device v4l2_dev;
@@ -497,6 +510,20 @@ struct vivid_dev {
/* Shared between radio receiver and transmitter */
bool radio_rds_loop;
struct timespec radio_rds_init_ts;
+
+ /* CEC */
+ struct cec_adapter *cec_rx_adap;
+ struct cec_adapter *cec_tx_adap[MAX_OUTPUTS];
+ struct workqueue_struct *cec_workqueue;
+ spinlock_t cec_slock;
+ struct list_head cec_work_list;
+ unsigned cec_xfer_time_jiffies;
+ unsigned long cec_xfer_start_jiffies;
+ u8 cec_output2bus_map[MAX_OUTPUTS];
+
+ /* CEC OSD String */
+ char osd[14];
+ unsigned long osd_jiffies;
};
static inline bool vivid_is_webcam(const struct vivid_dev *dev)
@@ -551,6 +551,17 @@ static void vivid_fillbuff(struct vivid_dev *dev, struct vivid_buffer *buf)
snprintf(str, sizeof(str), " button pressed!");
tpg_gen_text(tpg, basep, line++ * line_height, 16, str);
}
+ if (dev->osd[0]) {
+ if (vivid_is_hdmi_cap(dev)) {
+ snprintf(str, sizeof(str), " OSD \"%s\"", dev->osd);
+ tpg_gen_text(tpg, basep, line++ * line_height, 16, str);
+ }
+ if (dev->osd_jiffies &&
+ time_is_before_jiffies(dev->osd_jiffies + 5 * HZ)) {
+ dev->osd[0] = 0;
+ dev->osd_jiffies = 0;
+ }
+ }
}
/*
@@ -1700,6 +1700,8 @@ int vidioc_s_edid(struct file *file, void *_fh,
struct v4l2_edid *edid)
{
struct vivid_dev *dev = video_drvdata(file);
+ u16 phys_addr;
+ unsigned i;
memset(edid->reserved, 0, sizeof(edid->reserved));
if (edid->pad >= dev->num_inputs)
@@ -1708,14 +1710,30 @@ int vidioc_s_edid(struct file *file, void *_fh,
return -EINVAL;
if (edid->blocks == 0) {
dev->edid_blocks = 0;
- return 0;
+ phys_addr = CEC_PHYS_ADDR_INVALID;
+ goto set_phys_addr;
}
if (edid->blocks > dev->edid_max_blocks) {
edid->blocks = dev->edid_max_blocks;
return -E2BIG;
}
+ phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
+ phys_addr = cec_phys_addr_parent(phys_addr);
+
+ if (vb2_is_busy(&dev->vb_vid_cap_q))
+ return -EBUSY;
+
dev->edid_blocks = edid->blocks;
memcpy(dev->edid, edid->edid, edid->blocks * 128);
+
+set_phys_addr:
+ /* TODO: a proper hotplug detect cycle should be emulated here */
+ cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
+
+ for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
+ cec_s_phys_addr(dev->cec_tx_adap[i],
+ cec_phys_addr_for_input(phys_addr, i + 1),
+ false);
return 0;
}
@@ -908,6 +908,7 @@ int vidioc_g_edid(struct file *file, void *_fh,
{
struct vivid_dev *dev = video_drvdata(file);
struct video_device *vdev = video_devdata(file);
+ struct cec_adapter *adap;
memset(edid->reserved, 0, sizeof(edid->reserved));
if (vdev->vfl_dir == VFL_DIR_RX) {
@@ -915,11 +916,16 @@ int vidioc_g_edid(struct file *file, void *_fh,
return -EINVAL;
if (dev->input_type[edid->pad] != HDMI)
return -EINVAL;
+ adap = dev->cec_rx_adap;
} else {
+ unsigned bus_idx;
+
if (edid->pad >= dev->num_outputs)
return -EINVAL;
if (dev->output_type[edid->pad] != HDMI)
return -EINVAL;
+ bus_idx = dev->cec_output2bus_map[edid->pad];
+ adap = dev->cec_tx_adap[bus_idx];
}
if (edid->start_block == 0 && edid->blocks == 0) {
edid->blocks = dev->edid_blocks;
@@ -932,5 +938,6 @@ int vidioc_g_edid(struct file *file, void *_fh,
if (edid->start_block + edid->blocks > dev->edid_blocks)
edid->blocks = dev->edid_blocks - edid->start_block;
memcpy(edid->edid, dev->edid, edid->blocks * 128);
+ cec_set_edid_phys_addr(edid->edid, edid->blocks * 128, adap->phys_addr);
return 0;
}