Add CEC support to the cobalt driver.
Signed-off-by: Hans Verkuil hans.verkuil@cisco.com --- drivers/media/pci/cobalt/Kconfig | 1 + drivers/media/pci/cobalt/cobalt-driver.c | 115 +++++++++++++++++++++++----- drivers/media/pci/cobalt/cobalt-driver.h | 2 + drivers/media/pci/cobalt/cobalt-irq.c | 3 + drivers/media/pci/cobalt/cobalt-v4l2.c | 126 ++++++++++++++++++++++++++++--- drivers/media/pci/cobalt/cobalt-v4l2.h | 2 + 6 files changed, 223 insertions(+), 26 deletions(-)
diff --git a/drivers/media/pci/cobalt/Kconfig b/drivers/media/pci/cobalt/Kconfig index a01f0cc..9125747 100644 --- a/drivers/media/pci/cobalt/Kconfig +++ b/drivers/media/pci/cobalt/Kconfig @@ -4,6 +4,7 @@ config VIDEO_COBALT depends on PCI_MSI && MTD_COMPLEX_MAPPINGS depends on GPIOLIB || COMPILE_TEST depends on SND + select MEDIA_CEC select I2C_ALGOBIT select VIDEO_ADV7604 select VIDEO_ADV7511 diff --git a/drivers/media/pci/cobalt/cobalt-driver.c b/drivers/media/pci/cobalt/cobalt-driver.c index 8d6f04f..adae989 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 +150,51 @@ 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; + struct v4l2_subdev_cec_tx_done *tx_done = arg;
- if (s->is_output) + switch (notification) { + case V4L2_SUBDEV_CEC_TX_DONE: + cec_transmit_done(s->cec_adap, tx_done->status, + tx_done->arb_lost_cnt, tx_done->nack_cnt, + tx_done->low_drive_cnt, tx_done->error_cnt); + return; + case V4L2_SUBDEV_CEC_RX_MSG: + cec_received_msg(s->cec_adap, arg); + return; + case V4L2_SUBDEV_CEC_CONN_INPUTS: + cec_connected_inputs(s->cec_adap, *(u16 *)arg); + return; + default: + break; + } + + if (s->is_output) { + switch (notification) { + case ADV7511_EDID_DETECT: { + struct adv7511_edid_detect *ed = arg; + + cec_set_phys_addr(s->cec_adap, ed->phys_addr); + /* Unconfigure the CEC adapter if the EDID disappears */ + if (!ed->present && s->cec_adap && + s->cec_adap->is_configured) + cec_claim_log_addrs(s->cec_adap, NULL, false); + 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); + if (s->cec_adap) + cec_connected_inputs(s->cec_adap, 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); @@ -438,12 +473,15 @@ static void cobalt_stream_struct_init(struct cobalt *cobalt)
for (i = 0; i < COBALT_NUM_STREAMS; i++) { struct cobalt_stream *s = &cobalt->streams[i]; + struct video_device *vdev = &s->vdev;
s->cobalt = cobalt; s->flags = 0; s->is_audio = false; s->is_output = false; s->is_dummy = true; + snprintf(vdev->name, sizeof(vdev->name), + "%s-%d", cobalt->v4l2_dev.name, i);
/* The Memory DMA channels will always get a lower channel * number than the FIFO DMA. Video input should map to the @@ -485,6 +523,23 @@ static void cobalt_stream_struct_init(struct cobalt *cobalt) } }
+static int cobalt_create_cec_adap(struct cobalt_stream *s) +{ + u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS | + CEC_CAP_PASSTHROUGH | CEC_CAP_RC | + CEC_CAP_ARC | CEC_CAP_VENDOR_ID; + u8 nsinks = 0; + + if (s->is_output) + caps |= CEC_CAP_IS_SOURCE | CEC_CAP_CDC_HPD; + else + nsinks = 1; + s->cec_adap = cec_create_adapter(&cobalt_cec_adap_ops, + s, s->vdev.name, caps, nsinks, + &s->cobalt->pci_dev->dev); + return PTR_ERR_OR_ZERO(s->cec_adap); +} + static int cobalt_subdevs_init(struct cobalt *cobalt) { static struct adv76xx_platform_data adv7604_pdata = { @@ -508,10 +563,10 @@ static int cobalt_subdevs_init(struct cobalt *cobalt) .platform_data = &adv7604_pdata, };
- struct cobalt_stream *s = cobalt->streams; int i;
for (i = 0; i < COBALT_NUM_INPUTS; i++) { + struct cobalt_stream *s = cobalt->streams + i; struct v4l2_subdev_format sd_fmt = { .pad = ADV7604_PAD_SOURCE, .which = V4L2_SUBDEV_FORMAT_ACTIVE, @@ -525,28 +580,37 @@ static int cobalt_subdevs_init(struct cobalt *cobalt) }; int err;
- s[i].pad_source = ADV7604_PAD_SOURCE; - s[i].i2c_adap = &cobalt->i2c_adap[i]; - if (s[i].i2c_adap->dev.parent == NULL) + s->pad_source = ADV7604_PAD_SOURCE; + s->i2c_adap = &cobalt->i2c_adap[i]; + if (s->i2c_adap->dev.parent == NULL) + continue; + err = cobalt_create_cec_adap(s); + if (err && !cobalt_ignore_err) continue; + if (err) + return err; cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_NRESET_TO_HDMI_BIT(i), 1); - s[i].sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev, - s[i].i2c_adap, &adv7604_info, NULL); - if (!s[i].sd) { + s->sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev, + s->i2c_adap, &adv7604_info, NULL); + if (!s->sd) { + cec_delete_adapter(s->cec_adap); + s->cec_adap = NULL; if (cobalt_ignore_err) continue; return -ENODEV; } - err = v4l2_subdev_call(s[i].sd, video, s_routing, + s->cec_adap->available_log_addrs = + v4l2_subdev_call(s->sd, cec, adap_available_log_addrs); + err = v4l2_subdev_call(s->sd, video, s_routing, ADV76XX_PAD_HDMI_PORT_A, 0, 0); if (err) return err; - err = v4l2_subdev_call(s[i].sd, pad, set_edid, + err = v4l2_subdev_call(s->sd, pad, set_edid, &cobalt_edid); if (err) return err; - err = v4l2_subdev_call(s[i].sd, pad, set_fmt, NULL, + err = v4l2_subdev_call(s->sd, pad, set_fmt, NULL, &sd_fmt); if (err) return err; @@ -557,7 +621,7 @@ static int cobalt_subdevs_init(struct cobalt *cobalt) cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_VIDEO_RX_RESETN_BIT(i), 1); mdelay(1); - s[i].is_dummy = false; + s->is_dummy = false; cobalt->streams[i + COBALT_AUDIO_IN_STREAM].is_dummy = false; } return 0; @@ -618,17 +682,24 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt) .edid = edid, }; struct cobalt_stream *s = &cobalt->streams[COBALT_HSMA_IN_NODE]; + int err;
s->i2c_adap = &cobalt->i2c_adap[COBALT_NUM_ADAPTERS - 1]; if (s->i2c_adap->dev.parent == NULL) return 0; + err = cobalt_create_cec_adap(s); + if (err) + return err; cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_NRESET_TO_HDMI_BIT(4), 1);
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;
+ s->cec_adap->available_log_addrs = + v4l2_subdev_call(s->sd, cec, adap_available_log_addrs); + 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, @@ -650,8 +721,13 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt) } cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_NRESET_TO_HDMI_BIT(4), 0); cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_PWRDN0_TO_HSMA_TX_BIT, 0); + cec_delete_adapter(s->cec_adap); + s->cec_adap = NULL; s++; s->i2c_adap = &cobalt->i2c_adap[COBALT_NUM_ADAPTERS - 1]; + err = cobalt_create_cec_adap(s); + if (err) + return err; s->sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev, s->i2c_adap, &adv7511_info, NULL); if (s->sd) { @@ -663,6 +739,8 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt) cobalt_s_bit_sysctrl(cobalt, COBALT_SYS_CTRL_VIDEO_TX_RESETN_BIT, 1); cobalt->have_hsma_tx = true; + s->cec_adap->available_log_addrs = + v4l2_subdev_call(s->sd, cec, adap_available_log_addrs); v4l2_subdev_call(s->sd, core, s_power, 1); v4l2_subdev_call(s->sd, video, s_stream, 1); v4l2_subdev_call(s->sd, audio, s_stream, 1); @@ -672,6 +750,8 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt) cobalt->streams[COBALT_AUDIO_OUT_STREAM].is_dummy = false; return 0; } + cec_delete_adapter(s->cec_adap); + s->cec_adap = NULL; return -ENODEV; }
@@ -797,8 +877,9 @@ static void cobalt_remove(struct pci_dev *pci_dev) cobalt_set_interrupt(cobalt, false); flush_workqueue(cobalt->irq_work_queues); cobalt_nodes_unregister(cobalt); - for (i = 0; i < COBALT_NUM_ADAPTERS; i++) { - struct v4l2_subdev *sd = cobalt->streams[i].sd; + for (i = 0; i < COBALT_NUM_STREAMS; i++) { + struct cobalt_stream *s = &cobalt->streams[i]; + struct v4l2_subdev *sd = s->sd; struct i2c_client *client;
if (sd == NULL) diff --git a/drivers/media/pci/cobalt/cobalt-driver.h b/drivers/media/pci/cobalt/cobalt-driver.h index b2f08e4..66211f8 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> @@ -223,6 +224,7 @@ 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-irq.c b/drivers/media/pci/cobalt/cobalt-irq.c index b190d4f..9cd1596 100644 --- a/drivers/media/pci/cobalt/cobalt-irq.c +++ b/drivers/media/pci/cobalt/cobalt-irq.c @@ -234,6 +234,9 @@ void cobalt_irq_log_status(struct cobalt *cobalt) u32 mask; int i;
+ cobalt_info("irq: edge=%08x mask=%08x\n", + cobalt_read_bar1(cobalt, COBALT_SYS_STAT_EDGE), + cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK)); cobalt_info("irq: adv1=%u adv2=%u advout=%u none=%u full=%u\n", cobalt->irq_adv1, cobalt->irq_adv2, cobalt->irq_advout, cobalt->irq_none, cobalt->irq_full_fifo); diff --git a/drivers/media/pci/cobalt/cobalt-v4l2.c b/drivers/media/pci/cobalt/cobalt-v4l2.c index c0ba458..87316ca 100644 --- a/drivers/media/pci/cobalt/cobalt-v4l2.c +++ b/drivers/media/pci/cobalt/cobalt-v4l2.c @@ -600,6 +600,7 @@ static int cobalt_log_status(struct file *file, void *priv_fh) cobalt_pcie_status_show(cobalt); cobalt_cpld_status(cobalt); cobalt_irq_log_status(cobalt); + cec_log_status(s->cec_adap, NULL); v4l2_subdev_call(s->sd, core, log_status); if (!s->is_output) { cobalt_video_input_status_show(s); @@ -1159,6 +1160,98 @@ 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 = adap->priv; + + return s->sd; +} + +static int cobalt_cec_adap_enable(struct cec_adapter *adap, bool enable) +{ + return v4l2_subdev_call(adap_to_sd(adap), cec, adap_enable, enable); +} + +static int cobalt_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) +{ + return v4l2_subdev_call(adap_to_sd(adap), cec, adap_log_addr, + log_addr); +} + +static int cobalt_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, + u32 signal_free_time, struct cec_msg *msg) +{ + return v4l2_subdev_call(adap_to_sd(adap), cec, adap_transmit, + attempts, signal_free_time, msg); +} + +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 void cobalt_sink_terminate_arc(struct cec_adapter *adap) +{ +} + +static void cobalt_source_arc_initiated(struct cec_adapter *adap) +{ +} + +static void cobalt_source_arc_terminated(struct cec_adapter *adap) +{ +} + +static int cobalt_received(struct cec_adapter *adap, struct cec_msg *msg) +{ + struct cec_msg reply; + u16 pa; + + cec_msg_init(&reply, adap->log_addr[0], cec_msg_initiator(msg)); + + switch (msg->msg[1]) { + 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; + default: + return -ENOMSG; + } + return 0; +} + +const struct cec_adap_ops cobalt_cec_adap_ops = { + .adap_enable = cobalt_cec_adap_enable, + .adap_log_addr = cobalt_cec_adap_log_addr, + .adap_transmit = cobalt_cec_adap_transmit, + .source_cdc_hpd = cobalt_cec_cdc_hpd, + .sink_initiate_arc = cobalt_sink_initiate_arc, + .sink_terminate_arc = cobalt_sink_terminate_arc, + .source_arc_initiated = cobalt_source_arc_initiated, + .source_arc_terminated = cobalt_source_arc_terminated, + .received = cobalt_received, +}; + static int cobalt_node_register(struct cobalt *cobalt, int node) { static const struct v4l2_dv_timings dv1080p60 = @@ -1166,13 +1259,11 @@ 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);
- snprintf(vdev->name, sizeof(vdev->name), - "%s-%d", cobalt->v4l2_dev.name, node); s->width = 1920; /* Audio frames are just 4 lines of 1920 bytes */ s->height = s->is_audio ? 4 : 1080; @@ -1193,6 +1284,11 @@ 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) { + ret = cec_register_adapter(s->cec_adap); + if (ret) + return ret; + } vdev->v4l2_dev = &cobalt->v4l2_dev; if (s->is_dummy) vdev->fops = &cobalt_empty_fops; @@ -1206,8 +1302,14 @@ 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); + cec_set_phys_addr(s->cec_adap, 0); + ret = cec_enable(s->cec_adap, true); + } else if (s->is_output && s->sd) { + cec_set_phys_addr(s->cec_adap, CEC_PHYS_ADDR_INVALID); + ret = cec_enable(s->cec_adap, true); + } vdev->ioctl_ops = s->is_dummy ? &cobalt_ioctl_empty_ops : &cobalt_ioctl_ops; } @@ -1227,16 +1329,20 @@ 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_unregister_adapter(s->cec_adap); cobalt_err("couldn't register v4l2 device node %d\n", node); + } return ret; } cobalt_info("registered node %d\n", node); @@ -1267,9 +1373,11 @@ 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) + cec_unregister_adapter(s->cec_adap); + } else if (!s->is_dummy) { cobalt_alsa_exit(s); + } } } diff --git a/drivers/media/pci/cobalt/cobalt-v4l2.h b/drivers/media/pci/cobalt/cobalt-v4l2.h index 62be553..5be36cc 100644 --- a/drivers/media/pci/cobalt/cobalt-v4l2.h +++ b/drivers/media/pci/cobalt/cobalt-v4l2.h @@ -18,5 +18,7 @@ * SOFTWARE. */
+extern const struct cec_adap_ops cobalt_cec_adap_ops; + int cobalt_nodes_register(struct cobalt *cobalt); void cobalt_nodes_unregister(struct cobalt *cobalt);