[PATCHv7 15/15] cobalt: add cec support
Hans Verkuil
hans.verkuil at cisco.com
Mon Jun 29 03:15:00 PDT 2015
Add CEC support to the cobalt driver.
Signed-off-by: Hans Verkuil <hans.verkuil at cisco.com>
---
drivers/media/pci/cobalt/cobalt-driver.c | 37 +++++++++--
drivers/media/pci/cobalt/cobalt-driver.h | 2 +
drivers/media/pci/cobalt/cobalt-v4l2.c | 110 +++++++++++++++++++++++++++++--
3 files changed, 138 insertions(+), 11 deletions(-)
diff --git a/drivers/media/pci/cobalt/cobalt-driver.c b/drivers/media/pci/cobalt/cobalt-driver.c
index b994b8e..a6d3644 100644
--- a/drivers/media/pci/cobalt/cobalt-driver.c
+++ b/drivers/media/pci/cobalt/cobalt-driver.c
@@ -76,6 +76,7 @@ static u8 edid[256] = {
0x0A, 0x0A, 0x0A, 0x0A, 0x00, 0x00, 0x00, 0x10,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x68,
+
0x02, 0x03, 0x1a, 0xc0, 0x48, 0xa2, 0x10, 0x04,
0x02, 0x01, 0x21, 0x14, 0x13, 0x23, 0x09, 0x07,
0x07, 0x65, 0x03, 0x0c, 0x00, 0x10, 0x00, 0xe2,
@@ -149,17 +150,44 @@ static void cobalt_notify(struct v4l2_subdev *sd,
struct cobalt *cobalt = to_cobalt(sd->v4l2_dev);
unsigned sd_nr = cobalt_get_sd_nr(sd);
struct cobalt_stream *s = &cobalt->streams[sd_nr];
- bool hotplug = arg ? *((int *)arg) : false;
- if (s->is_output)
+ switch (notification) {
+ case V4L2_SUBDEV_CEC_TX_DONE:
+ cec_transmit_done(&s->cec_adap, (unsigned long)arg);
+ return;
+ case V4L2_SUBDEV_CEC_RX_MSG:
+ cec_received_msg(&s->cec_adap, arg);
+ return;
+ default:
+ break;
+ }
+
+ if (s->is_output) {
+ switch (notification) {
+ case ADV7511_EDID_DETECT: {
+ struct adv7511_edid_detect *ed = arg;
+
+ s->cec_adap.phys_addr = ed->phys_addr;
+ if (!ed->present) {
+ cec_enable(&s->cec_adap, false);
+ break;
+ }
+ cec_enable(&s->cec_adap, true);
+ break;
+ }
+ }
return;
+ }
switch (notification) {
- case ADV76XX_HOTPLUG:
+ case ADV76XX_HOTPLUG: {
+ bool hotplug = arg ? *((int *)arg) : false;
+
cobalt_s_bit_sysctrl(cobalt,
COBALT_SYS_CTRL_HPD_TO_CONNECTOR_BIT(sd_nr), hotplug);
cobalt_dbg(1, "Set hotplug for adv %d to %d\n", sd_nr, hotplug);
break;
+ }
case V4L2_DEVICE_NOTIFY_EVENT:
cobalt_dbg(1, "Format changed for adv %d\n", sd_nr);
v4l2_event_queue(&s->vdev, arg);
@@ -626,8 +654,9 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt)
s->sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev,
s->i2c_adap, &adv7842_info, NULL);
if (s->sd) {
- int err = v4l2_subdev_call(s->sd, pad, set_edid, &cobalt_edid);
+ int err;
+ err = v4l2_subdev_call(s->sd, pad, set_edid, &cobalt_edid);
if (err)
return err;
err = v4l2_subdev_call(s->sd, pad, set_fmt, NULL,
diff --git a/drivers/media/pci/cobalt/cobalt-driver.h b/drivers/media/pci/cobalt/cobalt-driver.h
index c206df9..151c80f 100644
--- a/drivers/media/pci/cobalt/cobalt-driver.h
+++ b/drivers/media/pci/cobalt/cobalt-driver.h
@@ -31,6 +31,7 @@
#include <linux/workqueue.h>
#include <linux/mutex.h>
+#include <media/cec.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
@@ -221,6 +222,7 @@ struct cobalt_stream {
struct list_head bufs;
struct i2c_adapter *i2c_adap;
struct v4l2_subdev *sd;
+ struct cec_adapter cec_adap;
struct mutex lock;
spinlock_t irqlock;
struct v4l2_dv_timings timings;
diff --git a/drivers/media/pci/cobalt/cobalt-v4l2.c b/drivers/media/pci/cobalt/cobalt-v4l2.c
index b40c2d1..b37bfd5 100644
--- a/drivers/media/pci/cobalt/cobalt-v4l2.c
+++ b/drivers/media/pci/cobalt/cobalt-v4l2.c
@@ -1156,6 +1156,69 @@ static const struct v4l2_file_operations cobalt_empty_fops = {
.release = v4l2_fh_release,
};
+static inline struct v4l2_subdev *adap_to_sd(struct cec_adapter *adap)
+{
+ struct cobalt_stream *s = container_of(adap, struct cobalt_stream, cec_adap);
+
+ return s->sd;
+}
+
+static int cobalt_cec_enable(struct cec_adapter *adap, bool enable)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_enable, enable);
+}
+
+static int cobalt_cec_log_addr(struct cec_adapter *adap, u8 log_addr)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_log_addr,
+ log_addr);
+}
+
+static int cobalt_cec_transmit(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_transmit, msg);
+}
+
+static void cobalt_cec_transmit_timed_out(struct cec_adapter *adap)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_transmit_timed_out);
+}
+
+static u8 cobalt_cec_cdc_hpd(struct cec_adapter *adap, u8 cdc_hpd_state)
+{
+ switch (cdc_hpd_state) {
+ case CEC_OP_HPD_STATE_EDID_DISABLE:
+ case CEC_OP_HPD_STATE_EDID_ENABLE:
+ case CEC_OP_HPD_STATE_EDID_DISABLE_ENABLE:
+ return CEC_OP_HPD_ERROR_NONE;
+ case CEC_OP_HPD_STATE_CP_EDID_DISABLE:
+ case CEC_OP_HPD_STATE_CP_EDID_ENABLE:
+ case CEC_OP_HPD_STATE_CP_EDID_DISABLE_ENABLE:
+ default:
+ return CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE;
+ }
+}
+
+static int cobalt_sink_initiate_arc(struct cec_adapter *adap)
+{
+ return 0;
+}
+
+static int cobalt_sink_terminate_arc(struct cec_adapter *adap)
+{
+ return 0;
+}
+
+static int cobalt_source_arc_initiated(struct cec_adapter *adap)
+{
+ return 0;
+}
+
+static int cobalt_source_arc_terminated(struct cec_adapter *adap)
+{
+ return 0;
+}
+
static int cobalt_node_register(struct cobalt *cobalt, int node)
{
static const struct v4l2_dv_timings dv1080p60 =
@@ -1163,7 +1226,7 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
struct cobalt_stream *s = cobalt->streams + node;
struct video_device *vdev = &s->vdev;
struct vb2_queue *q = &s->q;
- int ret;
+ int ret = 0;
mutex_init(&s->lock);
spin_lock_init(&s->irqlock);
@@ -1190,6 +1253,29 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
if (!s->is_audio) {
if (s->is_dummy)
cobalt_warn("Setting up dummy video node %d\n", node);
+ if (s->sd) {
+ u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_RECEIVE |
+ CEC_CAP_LOG_ADDRS | CEC_CAP_PASSTHROUGH |
+ CEC_CAP_RC | CEC_CAP_ARC;
+
+ s->cec_adap.adap_enable = cobalt_cec_enable;
+ s->cec_adap.adap_log_addr = cobalt_cec_log_addr;
+ s->cec_adap.adap_transmit = cobalt_cec_transmit;
+ s->cec_adap.adap_transmit_timed_out =
+ cobalt_cec_transmit_timed_out;
+ s->cec_adap.source_cdc_hpd = cobalt_cec_cdc_hpd;
+ s->cec_adap.sink_initiate_arc = cobalt_sink_initiate_arc;
+ s->cec_adap.sink_terminate_arc = cobalt_sink_terminate_arc;
+ s->cec_adap.source_arc_initiated = cobalt_source_arc_initiated;
+ s->cec_adap.source_arc_terminated = cobalt_source_arc_terminated;
+ if (s->is_output)
+ caps |= CEC_CAP_CDC;
+ ret = cec_create_adapter(&s->cec_adap, vdev->name,
+ caps, !s->is_output, THIS_MODULE,
+ &cobalt->pci_dev->dev);
+ s->cec_adap.available_log_addrs =
+ v4l2_subdev_call(s->sd, video, cec_available_log_addrs);
+ }
vdev->v4l2_dev = &cobalt->v4l2_dev;
if (s->is_dummy)
vdev->fops = &cobalt_empty_fops;
@@ -1203,8 +1289,11 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
vdev->ctrl_handler = s->sd->ctrl_handler;
s->timings = dv1080p60;
v4l2_subdev_call(s->sd, video, s_dv_timings, &s->timings);
- if (!s->is_output && s->sd)
+ if (!s->is_output && s->sd) {
cobalt_enable_input(s);
+ s->cec_adap.phys_addr = 0;
+ ret = cec_enable(&s->cec_adap, true);
+ }
vdev->ioctl_ops = s->is_dummy ? &cobalt_ioctl_empty_ops :
&cobalt_ioctl_ops;
}
@@ -1224,16 +1313,20 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
vdev->queue = q;
video_set_drvdata(vdev, s);
- ret = vb2_queue_init(q);
+ if (ret == 0)
+ ret = vb2_queue_init(q);
if (!s->is_audio && ret == 0)
ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
- else if (!s->is_dummy)
+ else if (!s->is_dummy && ret == 0)
ret = cobalt_alsa_init(s);
if (ret < 0) {
- if (!s->is_audio)
+ if (!s->is_audio) {
+ if (s->sd)
+ cec_delete_adapter(&s->cec_adap);
cobalt_err("couldn't register v4l2 device node %d\n",
node);
+ }
return ret;
}
cobalt_info("registered node %d\n", node);
@@ -1264,9 +1357,12 @@ void cobalt_nodes_unregister(struct cobalt *cobalt)
struct cobalt_stream *s = cobalt->streams + node;
struct video_device *vdev = &s->vdev;
- if (!s->is_audio)
+ if (!s->is_audio) {
video_unregister_device(vdev);
- else if (!s->is_dummy)
+ if (s->sd)
+ cec_delete_adapter(&s->cec_adap);
+ } else if (!s->is_dummy) {
cobalt_alsa_exit(s);
+ }
}
}
--
2.1.4
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