Add CEC support to the cobalt driver.
Signed-off-by: Hans Verkuil hans.verkuil@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); + } } }