From: Hans Verkuil <hansv...@cisco.com> The added HDMI CEC framework provides a generic kernel interface for HDMI CEC devices.
Signed-off-by: Hans Verkuil <hans.verkuil at cisco.com> [k.debski at samsung.com: Merged CEC Updates commit by Hans Verkuil] [k.debski at samsung.com: Merged Update author commit by Hans Verkuil] [k.debski at samsung.com: change kthread handling when setting logical address] [k.debski at samsung.com: code cleanup and fixes] [k.debski at samsung.com: add missing CEC commands to match spec] [k.debski at samsung.com: add RC framework support] [k.debski at samsung.com: move and edit documentation] [k.debski at samsung.com: add vendor id reporting] [k.debski at samsung.com: add possibility to clear assigned logical addresses] [k.debski at samsung.com: documentation fixes, clenaup and expansion] [k.debski at samsung.com: reorder of API structs and add reserved fields] [k.debski at samsung.com: fix handling of events and fix 32/64bit timespec problem] [k.debski at samsung.com: add cec.h to include/uapi/linux/Kbuild] [k.debski at samsung.com: add sequence number handling] [k.debski at samsung.com: add passthrough mode] [k.debski at samsung.com: fix CEC defines, add missing CEC 2.0 commands] minor additions] Signed-off-by: Kamil Debski <kamil at wypas.org> --- MAINTAINERS | 14 + drivers/media/Kconfig | 7 + drivers/media/Makefile | 2 + drivers/media/cec.c | 2185 ++++++++++++++++++++++++++++++++++++++++ include/media/cec.h | 201 ++++ include/uapi/linux/Kbuild | 2 + include/uapi/linux/cec-funcs.h | 1852 ++++++++++++++++++++++++++++++++++ include/uapi/linux/cec.h | 928 +++++++++++++++++ 8 files changed, 5191 insertions(+) create mode 100644 drivers/media/cec.c create mode 100644 include/media/cec.h create mode 100644 include/uapi/linux/cec-funcs.h create mode 100644 include/uapi/linux/cec.h diff --git a/MAINTAINERS b/MAINTAINERS index f075926..65ccec4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2704,6 +2704,20 @@ F: drivers/net/ieee802154/cc2520.c F: include/linux/spi/cc2520.h F: Documentation/devicetree/bindings/net/ieee802154/cc2520.txt +CEC DRIVER +M: Hans Verkuil <hans.verkuil at cisco.com> +L: linux-media at vger.kernel.org +T: git git://linuxtv.org/media_tree.git +W: http://linuxtv.org +S: Supported +F: Documentation/cec.txt +F: Documentation/DocBook/media/v4l/cec* +F: drivers/media/cec.c +F: drivers/media/rc/keymaps/rc-cec.c +F: include/media/cec.h +F: include/uapi/linux/cec.h +F: include/uapi/linux/cec-funcs.h + CELL BROADBAND ENGINE ARCHITECTURE M: Arnd Bergmann <arnd at arndb.de> L: linuxppc-dev at lists.ozlabs.org diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig index a8518fb..4f7fd52 100644 --- a/drivers/media/Kconfig +++ b/drivers/media/Kconfig @@ -80,6 +80,13 @@ config MEDIA_RC_SUPPORT Say Y when you have a TV or an IR device. +config MEDIA_CEC + tristate "CEC API (EXPERIMENTAL)" + depends on MEDIA_RC_SUPPORT + select RC_CORE + ---help--- + Enable the CEC API. + # # Media controller # Selectable only for webcam/grabbers, as other drivers don't use it diff --git a/drivers/media/Makefile b/drivers/media/Makefile index e608bbc..58e8554 100644 --- a/drivers/media/Makefile +++ b/drivers/media/Makefile @@ -2,6 +2,8 @@ # Makefile for the kernel multimedia device drivers. # +obj-$(CONFIG_MEDIA_CEC) += cec.o + media-objs := media-device.o media-devnode.o media-entity.o # diff --git a/drivers/media/cec.c b/drivers/media/cec.c new file mode 100644 index 0000000..a14ac73 --- /dev/null +++ b/drivers/media/cec.c @@ -0,0 +1,2185 @@ +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/kmod.h> +#include <linux/ktime.h> +#include <linux/slab.h> +#include <linux/mm.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/uaccess.h> +#include <media/cec.h> + +#define CEC_NUM_DEVICES 256 +#define CEC_NAME "cec" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "debug level (0-2)"); + +#define dprintk(lvl, fmt, arg...) \ + do { \ + if (lvl <= debug) \ + pr_info("cec-%s: " fmt, adap->name, ## arg); \ + } while (0) + +static dev_t cec_dev_t; + +/* Active devices */ +static DEFINE_MUTEX(cec_devnode_lock); +static DECLARE_BITMAP(cec_devnode_nums, CEC_NUM_DEVICES); + +/* dev to cec_devnode */ +#define to_cec_devnode(cd) container_of(cd, struct cec_devnode, dev) + +static inline struct cec_devnode *cec_devnode_data(struct file *filp) +{ + struct cec_fh *fh = filp->private_data; + + return &fh->adap->devnode; +} + +static bool cec_pa_are_adjacent(const struct cec_adapter *adap, u16 pa1, u16 pa2) +{ + u16 mask = 0xf000; + int i; + + if (pa1 == CEC_PHYS_ADDR_INVALID || pa2 == CEC_PHYS_ADDR_INVALID) + return false; + for (i = 0; i < 3; i++) { + if ((pa1 & mask) != (pa2 & mask)) + break; + mask = (mask >> 4) | 0xf000; + } + if ((pa1 & ~mask) || (pa2 & ~mask)) + return false; + if (!(pa1 & mask) ^ !(pa2 & mask)) + return true; + return false; +} + +static bool cec_la_are_adjacent(const struct cec_adapter *adap, u8 la1, u8 la2) +{ + u16 pa1 = adap->phys_addrs[la1]; + u16 pa2 = adap->phys_addrs[la2]; + + return cec_pa_are_adjacent(adap, pa1, pa2); +} + +static int cec_log_addr2idx(const struct cec_adapter *adap, u8 log_addr) +{ + int i; + + for (i = 0; i < adap->num_log_addrs; i++) + if (adap->log_addr[i] == log_addr) + return i; + return -1; +} + +static unsigned cec_log_addr2dev(const struct cec_adapter *adap, u8 log_addr) +{ + int i = cec_log_addr2idx(adap, log_addr); + + return adap->prim_device[i < 0 ? 0 : i]; +} + +static int cec_queue_event_init(struct cec_fh *fh) +{ + /* This has the size of the event queue for each event type. */ + static const unsigned queue_sizes[CEC_NUM_EVENTS] = { + 2, /* CEC_EVENT_STATE_CHANGE */ + 2, /* CEC_EVENT_INPUTS_CHANGE */ + 1, /* CEC_EVENT_LOST_MSGS */ + }; + unsigned i; + + for (i = 0; i < CEC_NUM_EVENTS; i++) { + fh->evqueue[i].events = kcalloc(queue_sizes[i], + sizeof(struct cec_event), GFP_KERNEL); + if (fh->evqueue[i].events == NULL) { + while (i--) { + kfree(fh->evqueue[i].events); + fh->evqueue[i].events = NULL; + fh->evqueue[i].elems = 0; + } + return -ENOMEM; + } + fh->evqueue[i].elems = queue_sizes[i]; + } + return 0; +} + +static void cec_queue_event_free(struct cec_fh *fh) +{ + unsigned i; + + for (i = 0; i < CEC_NUM_EVENTS; i++) + kfree(fh->evqueue[i].events); +} + +static void cec_queue_event_fh(struct cec_fh *fh, + const struct cec_event *new_ev, u64 ts) +{ + struct cec_event_queue *evq = &fh->evqueue[new_ev->event - 1]; + struct cec_event *ev; + + if (ts == 0) + ts = ktime_get_ns(); + + mutex_lock(&fh->lock); + ev = evq->events + evq->num_events; + /* Overwrite the last event if there is no more room for the new event */ + if (evq->num_events == evq->elems) { + ev--; + } else { + evq->num_events++; + fh->events++; + } + *ev = *new_ev; + ev->ts = ts; + mutex_unlock(&fh->lock); + wake_up_interruptible(&fh->wait); +} + +static void cec_queue_event(struct cec_adapter *adap, + const struct cec_event *ev) +{ + u64 ts = ktime_get_ns(); + struct cec_fh *fh; + + mutex_lock(&adap->devnode.fhs_lock); + list_for_each_entry(fh, &adap->devnode.fhs, list) + cec_queue_event_fh(fh, ev, ts); + mutex_unlock(&adap->devnode.fhs_lock); +} + +static void cec_queue_msg_fh(struct cec_fh *fh, const struct cec_msg *msg) +{ + struct cec_event ev_lost_msg = { + .event = CEC_EVENT_LOST_MSGS, + }; + struct cec_msg_entry *entry; + + mutex_lock(&fh->lock); + if (fh->queued_msgs == CEC_MAX_MSG_QUEUE_SZ) + goto lost_msgs; + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (entry == NULL) + goto lost_msgs; + + entry->msg = *msg; + list_add(&entry->list, &fh->msgs); + fh->queued_msgs++; + mutex_unlock(&fh->lock); + wake_up_interruptible(&fh->wait); + return; + +lost_msgs: + ev_lost_msg.lost_msgs.lost_msgs = ++fh->lost_msgs; + mutex_unlock(&fh->lock); + cec_queue_event_fh(fh, &ev_lost_msg, 0); +} + +static void cec_queue_msg_monitor(struct cec_adapter *adap, + const struct cec_msg *msg) +{ + struct cec_fh *fh; + + mutex_lock(&adap->devnode.fhs_lock); + list_for_each_entry(fh, &adap->devnode.fhs, list) { + if (fh->monitor) + cec_queue_msg_fh(fh, msg); + } + mutex_unlock(&adap->devnode.fhs_lock); +} + +static unsigned cec_adap_state(struct cec_adapter *adap) +{ + if (!adap->is_enabled) + return CEC_EVENT_STATE_DISABLED; + if (adap->is_configuring) + return CEC_EVENT_STATE_CONFIGURING; + if (adap->is_configured) + return CEC_EVENT_STATE_CONFIGURED; + return CEC_EVENT_STATE_UNCONFIGURED; +} + +void cec_set_phys_addr(struct cec_adapter *adap, u16 phys_addr) +{ + struct cec_event ev = { + .event = CEC_EVENT_PHYS_ADDR_CHANGE, + .phys_addr_change.phys_addr = phys_addr, + }; + + if (phys_addr == adap->phys_addr) + return; + + adap->phys_addr = phys_addr; + cec_queue_event(adap, &ev); +} +EXPORT_SYMBOL_GPL(cec_set_phys_addr); + +static void cec_post_state_event(struct cec_adapter *adap) +{ + struct cec_event ev = { + .event = CEC_EVENT_STATE_CHANGE, + }; + + ev.state_change.state = cec_adap_state(adap); + cec_queue_event(adap, &ev); +} + +static void cec_post_inputs_event(struct cec_adapter *adap) +{ + struct cec_event ev = { + .event = CEC_EVENT_INPUTS_CHANGE, + }; + + ev.inputs_change.connected_inputs = adap->connected_inputs; + cec_queue_event(adap, &ev); +} + +static void cec_data_completed(struct cec_data *data) +{ + if (data->blocking) { + /* + * Someone is blocking so mark the message as completed + * and call complete. + */ + data->completed = true; + complete(&data->c); + } else { + /* + * No blocking, so just queue the message if needed and + * free the memory. + */ + if (data->fh) + cec_queue_msg_fh(data->fh, &data->msg); + kfree(data); + } +} + +/* + * Main CEC state machine + * + * Wait until the thread should be stopped, or we're not transmitting and + * a new transmit message is queued up, in which case we start transmitting + * that message. When the adapter finished transmitting the message it will + * call cec_transmit_done(). + * + * If the adapter is disabled, then remove all queued messages instead. + */ +static int cec_thread_func(void *_adap) +{ + struct cec_adapter *adap = _adap; + + for (;;) { + unsigned signal_free_time_ms; + struct cec_data *data; + u8 attempts; + + wait_event_interruptible(adap->kthread_waitq, + kthread_should_stop() || + (!adap->transmitting && + !list_empty(&adap->transmit_queue))); + + if (kthread_should_stop()) + break; + mutex_lock(&adap->lock); + + if (!adap->is_enabled) { + while (!list_empty(&adap->transmit_queue)) { + data = list_first_entry(&adap->transmit_queue, + struct cec_data, list); + list_del_init(&data->list); + data->msg.ts = ktime_get_ns(); + data->msg.tx_status |= CEC_TX_STATUS_ERROR; + data->msg.reply = 0; + cec_data_completed(data); + } + goto unlock; + } + + if (list_empty(&adap->transmit_queue)) + goto unlock; + + data = list_first_entry(&adap->transmit_queue, + struct cec_data, list); + list_del_init(&data->list); + adap->transmitting = data; + attempts = data->msg.len == 1 ? 2 : 4; + /* Set the signal free time */ + if (data->attempts) { + /* should be >= 3 * 2.4ms for a retry */ + signal_free_time_ms = 8; + } else if (data->new_initiator) { + /* should be >= 5 * 2.4ms for new initiator */ + signal_free_time_ms = 12; + } else { + /* + * should be >= 7 * 2.4ms for sending another frame + * immediately after another. + */ + signal_free_time_ms = 17; + } + if (data->attempts == 0) + data->attempts = attempts; + adap->ops->adap_transmit(adap, data->attempts, + signal_free_time_ms, &data->msg); +unlock: + mutex_unlock(&adap->lock); + } + return 0; +} + +void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt, + u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt) +{ + dprintk(2, "cec_transmit_done %02x\n", status); + mutex_lock(&adap->lock); + if (WARN_ON(adap->transmitting == NULL)) { + dprintk(0, "cec_transmit_done without an ongoing transmit!\n"); + } else { + struct cec_data *data = adap->transmitting; + struct cec_msg *msg = &data->msg; + + WARN_ON(status == 0); + msg->ts = ktime_get_ns(); + msg->tx_status |= status; + msg->tx_arb_lost_cnt += arb_lost_cnt; + msg->tx_nack_cnt += nack_cnt; + msg->tx_low_drive_cnt += low_drive_cnt; + msg->tx_error_cnt += error_cnt; + if (data->attempts > 1 && + !(status & (CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_OK))) { + data->attempts--; + list_add(&data->list, &adap->transmit_queue); + adap->transmitting = NULL; + goto retry; + } else { + data->attempts = 0; + if (!(status & CEC_TX_STATUS_OK)) + msg->tx_status |= CEC_TX_STATUS_MAX_RETRIES; + /* Queue transmitted message for monitoring purposes */ + cec_queue_msg_monitor(adap, msg); + if (!(status & CEC_TX_STATUS_OK) || !adap->is_configured) + msg->reply = 0; + } + adap->transmitting = NULL; + if (msg->reply) { + list_add_tail(&data->list, &adap->wait_queue); + schedule_delayed_work(&data->work, + msecs_to_jiffies(msg->timeout)); + } else { + cec_data_completed(data); + } +retry: + /* + * Wake up the main thread to see if another message is ready + * for transmitting or to retry the current message. + */ + wake_up_interruptible(&adap->kthread_waitq); + } + mutex_unlock(&adap->lock); +} +EXPORT_SYMBOL_GPL(cec_transmit_done); + +/* + * Called when waiting for a reply times out. + */ +static void cec_wait_timeout(struct work_struct *work) +{ + struct cec_data *data = container_of(work, struct cec_data, work.work); + struct cec_adapter *adap = data->adap; + + mutex_lock(&adap->lock); + if (list_empty(&data->list)) + goto unlock; + + list_del_init(&data->list); + data->msg.ts = ktime_get_ns(); + data->msg.rx_status = CEC_RX_STATUS_TIMEOUT; + cec_data_completed(data); +unlock: + mutex_unlock(&adap->lock); +} + +static int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg, + struct cec_fh *fh, bool block) +{ + struct cec_data *data; + u8 last_initiator = 0xff; + unsigned timeout; + int res = 0; + + /* Note: adap->lock is taken when this function is called */ + if (msg->len == 0 || msg->len > CEC_MAX_MSG_SIZE) { + dprintk(1, "cec_transmit_msg: invalid length %d\n", msg->len); + return -EINVAL; + } + if (msg->reply && msg->len == 1) { + dprintk(1, "cec_transmit_msg: can't reply for poll msg\n"); + return -EINVAL; + } + if (msg->len > 1 && !cec_msg_is_broadcast(msg) && + cec_has_log_addr(adap, cec_msg_destination(msg))) { + dprintk(1, "cec_transmit_msg: destination is the adapter itself\n"); + return -EINVAL; + } + if (cec_msg_initiator(msg) != 0xf && + !cec_has_log_addr(adap, cec_msg_initiator(msg))) { + dprintk(1, "cec_transmit_msg: initiator has unknown logical address %d\n", + cec_msg_initiator(msg)); + return -EINVAL; + } + if (msg->reply && msg->timeout == 0) { + /* Make sure the timeout isn't 0. */ + msg->timeout = 1000; + } + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data == NULL) + return -ENOMEM; + + if (msg->len == 1) + dprintk(2, "cec_transmit_msg: 0x%02x%s\n", + msg->msg[0], !block ? " nb" : ""); + else if (msg->reply) + dprintk(2, "cec_transmit_msg: 0x%02x 0x%02x (wait for 0x%02x)%s\n", + msg->msg[0], msg->msg[1], + msg->reply, !block ? " nb" : ""); + else + dprintk(2, "cec_transmit_msg: 0x%02x 0x%02x%s\n", + msg->msg[0], msg->msg[1], + !block ? " nb" : ""); + + if (msg->len > 1 && msg->msg[1] == CEC_MSG_CDC_MESSAGE) { + msg->msg[2] = adap->phys_addr >> 8; + msg->msg[3] = adap->phys_addr & 0xff; + } + msg->rx_status = msg->tx_status = 0; + msg->tx_arb_lost_cnt = msg->tx_nack_cnt = 0; + msg->tx_low_drive_cnt = msg->tx_error_cnt = 0; + data->msg = *msg; + data->fh = fh; + data->adap = adap; + data->blocking = block; + if (msg->len > 1) { + if (!(list_empty(&adap->transmit_queue))) { + const struct cec_data *last; + + last = list_last_entry(&adap->transmit_queue, + const struct cec_data, list); + last_initiator = cec_msg_initiator(&last->msg); + } else if (adap->transmitting) { + last_initiator = + cec_msg_initiator(&adap->transmitting->msg); + } + } + data->new_initiator = last_initiator != cec_msg_initiator(msg); + init_completion(&data->c); + INIT_DELAYED_WORK(&data->work, cec_wait_timeout); + + if (adap->is_configured || adap->is_configuring) { + data->msg.sequence = adap->sequence++; + list_add_tail(&data->list, &adap->transmit_queue); + if (adap->transmitting == NULL) + wake_up_interruptible(&adap->kthread_waitq); + } else { + res = -ENONET; + kfree(data); + } + if (res || !block) + return res; + mutex_unlock(&adap->lock); + /* + * 400 ms is the time it takes for one 16 byte message to be + * transferred and 5 is the maximum number of retries. Add + * another 100 ms as a margin. So if we don't get a completion + * before that time something is really wrong and we time out. + */ + timeout = 5 * 400 + 100; + /* Add the requested timeout if we have to wait for a reply */ + if (msg->reply) + timeout += msg->timeout; + res = wait_for_completion_killable_timeout(&data->c, + msecs_to_jiffies(timeout)); + mutex_lock(&adap->lock); + if (data->completed) { + *msg = data->msg; + kfree(data); + res = 0; + } else { + data->blocking = false; + data->fh = NULL; + if (res == 0) { /* timed out */ + /* Check if the reply or the transmit failed */ + if (msg->reply && (msg->tx_status & CEC_TX_STATUS_OK)) + msg->rx_status = CEC_RX_STATUS_TIMEOUT; + else + msg->tx_status = CEC_TX_STATUS_MAX_RETRIES; + } + } + return res; +} + +int cec_transmit_msg(struct cec_adapter *adap, struct cec_msg *msg, + bool block) +{ + int ret; + + mutex_lock(&adap->lock); + ret = cec_transmit_msg_fh(adap, msg, NULL, block); + mutex_unlock(&adap->lock); + return ret; +} +EXPORT_SYMBOL_GPL(cec_transmit_msg); + +static int cec_report_features(struct cec_adapter *adap, unsigned la_idx) +{ + struct cec_msg msg = { }; + u8 *features = adap->features[la_idx]; + bool op_is_dev_features = false; + unsigned idx; + + if (adap->cec_version < CEC_OP_CEC_VERSION_2_0) + return 0; + + /* Report Features */ + msg.msg[0] = (adap->log_addr[la_idx] << 4) | 0x0f; + msg.len = 4; + msg.msg[1] = CEC_MSG_REPORT_FEATURES; + msg.msg[2] = adap->cec_version; + msg.msg[3] = adap->all_device_types[la_idx]; + + /* Write RC Profiles first, then Device Features */ + for (idx = 0; idx < sizeof(adap->features[0]); idx++) { + msg.msg[msg.len++] = features[idx]; + if ((features[idx] & CEC_OP_FEAT_EXT) == 0) { + if (op_is_dev_features) + break; + op_is_dev_features = true; + } + } + return cec_transmit_msg(adap, &msg, false); +} + +static int cec_report_phys_addr(struct cec_adapter *adap, unsigned la_idx) +{ + struct cec_msg msg = { }; + + /* Report Physical Address */ + msg.msg[0] = (adap->log_addr[la_idx] << 4) | 0x0f; + cec_msg_report_physical_addr(&msg, adap->phys_addr, + adap->prim_device[la_idx]); + dprintk(2, "config: la %d pa %x.%x.%x.%x\n", + adap->log_addr[la_idx], + cec_phys_addr_exp(adap->phys_addr)); + return cec_transmit_msg(adap, &msg, false); +} + +static int cec_feature_abort_reason(struct cec_adapter *adap, + struct cec_msg *msg, u8 reason) +{ + struct cec_msg tx_msg = { }; + + /* + * Don't reply with CEC_MSG_FEATURE_ABORT to a CEC_MSG_FEATURE_ABORT + * message! + */ + if (msg->msg[1] == CEC_MSG_FEATURE_ABORT) + return 0; + cec_msg_set_reply_to(&tx_msg, msg); + cec_msg_feature_abort(&tx_msg, msg->msg[1], reason); + return cec_transmit_msg(adap, &tx_msg, false); +} + +static int cec_feature_abort(struct cec_adapter *adap, struct cec_msg *msg) +{ + return cec_feature_abort_reason(adap, msg, + CEC_OP_ABORT_UNRECOGNIZED_OP); +} + +static int cec_feature_refused(struct cec_adapter *adap, struct cec_msg *msg) +{ + return cec_feature_abort_reason(adap, msg, + CEC_OP_ABORT_REFUSED); +} + +/* + * Called when a CEC message is received. This function will do any + * necessary core processing. The is_reply bool is true if this message + * is a reply to an earlier transmit. + */ +static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg, + bool is_reply) +{ + bool is_broadcast = cec_msg_is_broadcast(msg); + u8 dest_laddr = cec_msg_destination(msg); + u8 init_laddr = cec_msg_initiator(msg); + u8 devtype = cec_log_addr2dev(adap, dest_laddr); + int la_idx = cec_log_addr2idx(adap, dest_laddr); + bool is_directed = la_idx >= 0; + bool from_unregistered = init_laddr == 0xf; + u16 cdc_phys_addr; + struct cec_msg tx_cec_msg = { }; + u8 *tx_msg = tx_cec_msg.msg; + + dprintk(1, "cec_receive_notify: %02x %02x\n", msg->msg[0], msg->msg[1]); + + if (!is_directed && !is_broadcast) { + if (adap->passthrough) + goto skip_processing; + return 0; + } + + if (adap->ops->received) { + /* Allow drivers to process the message first */ + if (adap->ops->received(adap, msg) != -ENOMSG) + return 0; + } + + /* + * ARC, CDC and REPORT_PHYSICAL_ADDR, CEC_MSG_USER_CONTROL_PRESSED and + * CEC_MSG_USER_CONTROL_RELEASED messages always have to be + * handled by the CEC core, even if the passthrough mode is on. + * ARC and CDC messages will never be seen even if passthrough is + * on, but the others are just passed on normally. + */ + switch (msg->msg[1]) { + case CEC_MSG_INITIATE_ARC: + case CEC_MSG_TERMINATE_ARC: + case CEC_MSG_REQUEST_ARC_INITIATION: + case CEC_MSG_REQUEST_ARC_TERMINATION: + case CEC_MSG_REPORT_ARC_INITIATED: + case CEC_MSG_REPORT_ARC_TERMINATED: + /* ARC messages are never passed through if CAP_ARC is set */ + + /* Abort/ignore if ARC is not supported */ + if (!(adap->capabilities & CEC_CAP_ARC)) { + /* Just abort if nobody is listening */ + if (is_directed && !is_reply && !adap->cec_owner) + return cec_feature_abort(adap, msg); + goto skip_processing; + } + /* Ignore if addressing is wrong */ + if (is_broadcast || from_unregistered) + return 0; + break; + + case CEC_MSG_CDC_MESSAGE: + switch (msg->msg[4]) { + case CEC_MSG_CDC_HPD_REPORT_STATE: + case CEC_MSG_CDC_HPD_SET_STATE: + /* + * CDC_HPD messages are never passed through if + * CAP_CDC_HPD is set + */ + + /* Ignore if CDC_HPD is not supported */ + if (!(adap->capabilities & CEC_CAP_CDC_HPD)) + goto skip_processing; + /* or the addressing is wrong */ + if (!is_broadcast) + return 0; + break; + default: + /* Other CDC messages are ignored */ + goto skip_processing; + } + break; + + case CEC_MSG_GET_CEC_VERSION: + case CEC_MSG_GIVE_DEVICE_VENDOR_ID: + case CEC_MSG_ABORT: + case CEC_MSG_GIVE_DEVICE_POWER_STATUS: + case CEC_MSG_GIVE_PHYSICAL_ADDR: + case CEC_MSG_GIVE_OSD_NAME: + case CEC_MSG_GIVE_FEATURES: + /* + * Skip processing these messages if the passthrough mode + * is on. + */ + if (adap->passthrough) + goto skip_processing; + /* Ignore if addressing is wrong */ + if (is_broadcast || from_unregistered) + return 0; + break; + + case CEC_MSG_USER_CONTROL_PRESSED: + case CEC_MSG_USER_CONTROL_RELEASED: + /* Wrong addressing mode: don't process */ + if (is_broadcast || from_unregistered) + goto skip_processing; + break; + + case CEC_MSG_REPORT_PHYSICAL_ADDR: + /* + * This message is always processed, regardless of the + * passthrough setting. + * + * Exception: don't process if wrong addressing mode. + */ + if (!is_broadcast) + goto skip_processing; + break; + + default: + break; + } + + cec_msg_set_reply_to(&tx_cec_msg, msg); + + switch (msg->msg[1]) { + /* The following messages are processed but still passed through */ + case CEC_MSG_REPORT_PHYSICAL_ADDR: + adap->phys_addrs[init_laddr] = + (msg->msg[2] << 8) | msg->msg[3]; + dprintk(1, "Reported physical address %04x for logical address %d\n", + adap->phys_addrs[init_laddr], init_laddr); + break; + + case CEC_MSG_USER_CONTROL_PRESSED: + if (!(adap->capabilities & CEC_CAP_RC)) + break; + + switch (msg->msg[2]) { + /* + * Play function, this message can have variable length + * depending on the specific play function that is used. + */ + case 0x60: + if (msg->len == 2) + rc_keydown(adap->rc, RC_TYPE_CEC, + msg->msg[2], 0); + else + rc_keydown(adap->rc, RC_TYPE_CEC, + msg->msg[2] << 8 | msg->msg[3], 0); + break; + /* + * Other function messages that are not handled. + * Currently the RC framework does not allow to supply an + * additional parameter to a keypress. These "keys" contain + * other information such as channel number, an input number + * etc. + * For the time being these messages are not processed by the + * framework and are simply forwarded to the user space. + */ + case 0x56: case 0x57: + case 0x67: case 0x68: case 0x69: case 0x6a: + break; + default: + rc_keydown(adap->rc, RC_TYPE_CEC, msg->msg[2], 0); + break; + } + break; + + case CEC_MSG_USER_CONTROL_RELEASED: + if (!(adap->capabilities & CEC_CAP_RC)) + break; + rc_keyup(adap->rc); + break; + + /* + * The remaining messages are only processed if the passthrough mode + * is off. + */ + case CEC_MSG_GET_CEC_VERSION: + cec_msg_cec_version(&tx_cec_msg, adap->cec_version); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_GIVE_PHYSICAL_ADDR: + /* Do nothing for CEC switches using addr 15 */ + if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH && dest_laddr == 15) + return 0; + cec_msg_report_physical_addr(&tx_cec_msg, adap->phys_addr, devtype); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_GIVE_DEVICE_VENDOR_ID: + if (!(adap->capabilities & CEC_CAP_VENDOR_ID) || + adap->vendor_id == CEC_VENDOR_ID_NONE) + return cec_feature_abort(adap, msg); + cec_msg_device_vendor_id(&tx_cec_msg, adap->vendor_id); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_ABORT: + /* Do nothing for CEC switches */ + if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH) + return 0; + return cec_feature_refused(adap, msg); + + case CEC_MSG_GIVE_DEVICE_POWER_STATUS: + /* Do nothing for CEC switches */ + if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH) + return 0; + cec_msg_report_power_status(&tx_cec_msg, adap->pwr_state); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_GIVE_OSD_NAME: { + if (adap->osd_name[0] == 0) + return cec_feature_abort(adap, msg); + cec_msg_set_osd_name(&tx_cec_msg, adap->osd_name); + return cec_transmit_msg(adap, &tx_cec_msg, false); + } + + case CEC_MSG_GIVE_FEATURES: + if (adap->cec_version >= CEC_OP_CEC_VERSION_2_0) + return cec_report_features(adap, la_idx); + return 0; + + case CEC_MSG_REQUEST_ARC_INITIATION: + if (!adap->is_source || + !cec_la_are_adjacent(adap, dest_laddr, init_laddr)) + return cec_feature_refused(adap, msg); + cec_msg_initiate_arc(&tx_cec_msg, false); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_REQUEST_ARC_TERMINATION: + if (!adap->is_source || + !cec_la_are_adjacent(adap, dest_laddr, init_laddr)) + return cec_feature_refused(adap, msg); + cec_msg_terminate_arc(&tx_cec_msg, false); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_INITIATE_ARC: + if (!adap->ninputs || + !cec_la_are_adjacent(adap, dest_laddr, init_laddr)) + return cec_feature_refused(adap, msg); + if (adap->ops->sink_initiate_arc && adap->ops->sink_initiate_arc(adap)) + return 0; + cec_msg_report_arc_initiated(&tx_cec_msg); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_TERMINATE_ARC: + if (!adap->ninputs || + !cec_la_are_adjacent(adap, dest_laddr, init_laddr)) + return cec_feature_refused(adap, msg); + if (adap->ops->sink_terminate_arc) + adap->ops->sink_terminate_arc(adap); + cec_msg_report_arc_terminated(&tx_cec_msg); + return cec_transmit_msg(adap, &tx_cec_msg, false); + + case CEC_MSG_REPORT_ARC_INITIATED: + if (!adap->is_source || + !cec_la_are_adjacent(adap, dest_laddr, init_laddr)) + return cec_feature_refused(adap, msg); + if (adap->ops->source_arc_initiated) + adap->ops->source_arc_initiated(adap); + return 0; + + case CEC_MSG_REPORT_ARC_TERMINATED: + if (!adap->is_source || + !cec_la_are_adjacent(adap, dest_laddr, init_laddr)) + return cec_feature_refused(adap, msg); + if (adap->ops->source_arc_terminated) + adap->ops->source_arc_terminated(adap); + return 0; + + case CEC_MSG_CDC_MESSAGE: { + unsigned shift; + unsigned input_port; + + cdc_phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + if (!cec_pa_are_adjacent(adap, cdc_phys_addr, adap->phys_addr)) + return 0; + + switch (msg->msg[4]) { + case CEC_MSG_CDC_HPD_REPORT_STATE: + /* + * Ignore if we're not a sink or the message comes from + * an upstream device. + */ + if (!adap->ninputs || cdc_phys_addr <= adap->phys_addr) + return 0; + adap->ops->sink_cdc_hpd(adap, msg->msg[5] >> 4, msg->msg[5] & 0xf); + return 0; + case CEC_MSG_CDC_HPD_SET_STATE: + /* Ignore if we're not a source */ + if (!adap->is_source) + return 0; + break; + default: + return 0; + } + + input_port = msg->msg[5] >> 4; + for (shift = 0; shift < 16; shift += 4) { + if (cdc_phys_addr & (0xf000 >> shift)) + continue; + cdc_phys_addr |= input_port << (12 - shift); + break; + } + if (cdc_phys_addr != adap->phys_addr) + return 0; + + tx_cec_msg.len = 6; + /* broadcast reply */ + tx_msg[0] = (adap->log_addr[0] << 4) | 0xf; + cec_msg_cdc_hpd_report_state(&tx_cec_msg, + msg->msg[5] & 0xf, + adap->ops->source_cdc_hpd(adap, msg->msg[5] & 0xf)); + return cec_transmit_msg(adap, &tx_cec_msg, false); + } + + default: + /* + * Unprocessed messages are aborted if userspace isn't doing + * any processing either. + */ + if (is_directed && !is_reply && !adap->cec_owner) + return cec_feature_abort(adap, msg); + break; + } + +skip_processing: + if (!is_reply && adap->cec_owner) + cec_queue_msg_fh(adap->cec_owner, msg); + return 0; +} + +void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg) +{ + struct cec_data *data; + u8 msg_init = cec_msg_initiator(msg); + u8 msg_dest = cec_msg_destination(msg); + bool is_reply = false; + bool is_snoop = false; + + mutex_lock(&adap->lock); + msg->ts = ktime_get_ns(); + msg->rx_status = CEC_RX_STATUS_OK; + msg->tx_status = 0; + msg->sequence = msg->reply = msg->timeout = 0; + memset(msg->reserved, 0, sizeof(msg->reserved)); + dprintk(2, "cec_received_msg: %02x %02x\n", msg->msg[0], msg->msg[1]); + if (!cec_msg_is_broadcast(msg)) { + u16 mask = (1 << msg_dest) | (1 << msg_init); + + /* We're snooping if neither msg_dest nor msg_init is us */ + is_snoop = !(adap->log_addr_mask & mask); + } + if (!is_snoop && msg->len > 1 && msg->msg[1] != CEC_MSG_CDC_MESSAGE) { + u8 cmd = msg->msg[1]; + bool abort = cmd == CEC_MSG_FEATURE_ABORT; + + if (abort) + cmd = msg->msg[2]; + list_for_each_entry(data, &adap->wait_queue, list) { + struct cec_msg *dst = &data->msg; + + if ((abort && cmd != dst->msg[1]) || + (!abort && cmd != dst->reply)) + continue; + if (msg_init != cec_msg_destination(dst) && + !cec_msg_is_broadcast(dst)) + continue; + msg->sequence = dst->sequence; + *dst = *msg; + if (abort) { + dst->reply = 0; + dst->rx_status |= CEC_RX_STATUS_FEATURE_ABORT; + } + list_del_init(&data->list); + if (!cancel_delayed_work(&data->work)) { + mutex_unlock(&adap->lock); + flush_scheduled_work(); + mutex_lock(&adap->lock); + } + if (data->blocking || data->fh) + is_reply = true; + cec_data_completed(data); + break; + } + } + mutex_unlock(&adap->lock); + cec_queue_msg_monitor(adap, msg); + + if (is_snoop || msg->len <= 1) + return; + + cec_receive_notify(adap, msg, is_reply); +} +EXPORT_SYMBOL_GPL(cec_received_msg); + +static int cec_receive_msg(struct cec_fh *fh, struct cec_msg *msg, bool block) +{ + int res; + + do { + mutex_lock(&fh->lock); + if (fh->queued_msgs) { + struct cec_msg_entry *entry = + list_first_entry(&fh->msgs, + struct cec_msg_entry, list); + + list_del(&entry->list); + *msg = entry->msg; + kfree(entry); + fh->queued_msgs--; + res = 0; + } else { + res = -EAGAIN; + } + mutex_unlock(&fh->lock); + if (!block || !res) + break; + if (msg->timeout) { + res = wait_event_interruptible_timeout(fh->wait, + fh->queued_msgs, + msecs_to_jiffies(msg->timeout)); + if (res == 0) + res = -ETIMEDOUT; + else if (res > 0) + res = 0; + } else { + res = wait_event_interruptible(fh->wait, + fh->queued_msgs); + } + } while (!res); + return res; +} + +int _cec_enable(struct cec_adapter *adap, bool enable) +{ + int ret; + + if (enable == adap->is_enabled) + return 0; + ret = adap->ops->adap_enable(adap, enable); + if (ret) + return ret; + adap->is_configured = false; + adap->is_enabled = enable; + if (!enable) { + adap->num_log_addrs = 0; + adap->log_addr_mask = 0; + memset(adap->phys_addrs, 0xff, sizeof(adap->phys_addrs)); + if (adap->is_source) + cec_set_phys_addr(adap, CEC_PHYS_ADDR_INVALID); + wake_up_interruptible(&adap->kthread_waitq); + } + cec_post_state_event(adap); + return 0; +} +EXPORT_SYMBOL_GPL(_cec_enable); + +int cec_enable(struct cec_adapter *adap, bool enable) +{ + int ret; + + mutex_lock(&adap->lock); + ret = _cec_enable(adap, enable); + mutex_unlock(&adap->lock); + return ret; +} +EXPORT_SYMBOL_GPL(cec_enable); + +struct cec_log_addrs_int { + struct cec_adapter *adap; + struct cec_log_addrs log_addrs; + struct completion c; + bool free_on_exit; + int err; +}; + +static int cec_config_log_addrs(struct cec_adapter *adap, + struct cec_log_addrs *log_addrs) +{ + static const u8 tv_log_addrs[] = { + 0, CEC_LOG_ADDR_INVALID + }; + static const u8 record_log_addrs[] = { + 1, 2, 9, 12, 13, CEC_LOG_ADDR_INVALID + }; + static const u8 tuner_log_addrs[] = { + 3, 6, 7, 10, 12, 13, CEC_LOG_ADDR_INVALID + }; + static const u8 playback_log_addrs[] = { + 4, 8, 11, 12, 13, CEC_LOG_ADDR_INVALID + }; + static const u8 audiosystem_log_addrs[] = { + 5, 12, 13, CEC_LOG_ADDR_INVALID + }; + static const u8 specific_use_log_addrs[] = { + 14, 12, 13, CEC_LOG_ADDR_INVALID + }; + static const u8 unregistered_log_addrs[] = { + CEC_LOG_ADDR_INVALID + }; + static const u8 *type2addrs[7] = { + [CEC_LOG_ADDR_TYPE_TV] = tv_log_addrs, + [CEC_LOG_ADDR_TYPE_RECORD] = record_log_addrs, + [CEC_LOG_ADDR_TYPE_TUNER] = tuner_log_addrs, + [CEC_LOG_ADDR_TYPE_PLAYBACK] = playback_log_addrs, + [CEC_LOG_ADDR_TYPE_AUDIOSYSTEM] = audiosystem_log_addrs, + [CEC_LOG_ADDR_TYPE_SPECIFIC] = specific_use_log_addrs, + [CEC_LOG_ADDR_TYPE_UNREGISTERED] = unregistered_log_addrs, + }; + struct cec_msg msg = { }; + int i, j; + int err; + + if (adap->phys_addr) { + /* + * The TV functionality can only map to physical address 0. + * For any other address, try the Specific functionality + * instead as per the spec. + */ + for (i = 0; i < log_addrs->num_log_addrs; i++) + if (log_addrs->log_addr_type[i] == CEC_LOG_ADDR_TYPE_TV) + log_addrs->log_addr_type[i] = + CEC_LOG_ADDR_TYPE_SPECIFIC; + } + + dprintk(2, "physical address: %x.%x.%x.%x, claim %d logical addresses\n", + cec_phys_addr_exp(adap->phys_addr), + log_addrs->num_log_addrs); + strlcpy(adap->osd_name, log_addrs->osd_name, sizeof(adap->osd_name)); + adap->num_log_addrs = 0; + adap->log_addr_mask = 0; + cec_post_state_event(adap); + + /* + * TODO: remember last used logical addr type to achieve + * faster logical address polling by trying that one first. + */ + for (i = 0; i < log_addrs->num_log_addrs; i++) { + const u8 *la_list = type2addrs[log_addrs->log_addr_type[i]]; + + if (kthread_should_stop()) { + err = -EINTR; + goto unconfigure; + } + + for (j = 0; la_list[j] != CEC_LOG_ADDR_INVALID; j++) { + u8 log_addr = la_list[j]; + + if (adap->log_addr_mask & (1 << log_addr)) + continue; + + /* Send polling message */ + msg.len = 1; + msg.msg[0] = 0xf0 | log_addr; + msg.reply = 0; + err = cec_transmit_msg(adap, &msg, true); + if (err) + goto unconfigure; + + if (!(msg.tx_status & CEC_TX_STATUS_OK)) { + unsigned idx = adap->num_log_addrs++; + + /* + * Message not acknowledged, so this logical + * address is free to use. + */ + adap->log_addr_mask |= 1 << log_addr; + adap->log_addr[idx] = log_addr; + log_addrs->log_addr[i] = log_addr; + adap->log_addr_type[idx] = + log_addrs->log_addr_type[i]; + adap->prim_device[idx] = + log_addrs->primary_device_type[i]; + adap->all_device_types[idx] = + log_addrs->all_device_types[i]; + adap->phys_addrs[log_addr] = adap->phys_addr; + memcpy(adap->features[idx], log_addrs->features[i], + sizeof(adap->features[idx])); + err = adap->ops->adap_log_addr(adap, log_addr); + dprintk(2, "claim addr %d (%d)\n", log_addr, + adap->prim_device[idx]); + if (err) + goto unconfigure; + + /* + * Report Features must come first according + * to CEC 2.0 + */ + cec_report_features(adap, idx); + cec_report_phys_addr(adap, idx); + break; + } + } + } + if (adap->num_log_addrs == 0) { + if (log_addrs->num_log_addrs > 1) + dprintk(2, "could not claim last %d addresses\n", + log_addrs->num_log_addrs - 1); + adap->log_addr[0] = 15; + adap->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED; + adap->prim_device[0] = CEC_OP_PRIM_DEVTYPE_SWITCH; + adap->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH; + err = adap->ops->adap_log_addr(adap, 15); + dprintk(2, "claim addr %d (%d)\n", 15, adap->prim_device[0]); + if (err) + goto unconfigure; + + adap->num_log_addrs = 1; + /* TODO: do we need to do this for an unregistered device? */ + cec_report_phys_addr(adap, 0); + } + mutex_lock(&adap->lock); + adap->is_configured = true; + adap->is_configuring = false; + cec_post_state_event(adap); + mutex_unlock(&adap->lock); + return 0; + +unconfigure: + mutex_lock(&adap->lock); + adap->num_log_addrs = 0; + adap->log_addr_mask = 0; + adap->is_configuring = false; + cec_post_state_event(adap); + mutex_unlock(&adap->lock); + return err; +} + +static int cec_config_thread_func(void *arg) +{ + struct cec_log_addrs_int *cla_int = arg; + int err; + + cla_int->err = err = cec_config_log_addrs(cla_int->adap, + &cla_int->log_addrs); + cla_int->adap->kthread_config = NULL; + if (cla_int->free_on_exit) + kfree(cla_int); + else + complete(&cla_int->c); + + return err; +} + +int cec_claim_log_addrs(struct cec_adapter *adap, + struct cec_log_addrs *log_addrs, bool block) +{ + struct cec_log_addrs_int *cla_int; + int i; + + if (!adap->is_enabled) + return -ENONET; + + if (log_addrs == NULL || log_addrs->num_log_addrs == 0) { + int err = adap->ops->adap_log_addr(adap, CEC_LOG_ADDR_INVALID); + + if (err) + return err; + mutex_lock(&adap->lock); + adap->is_configured = false; + adap->num_log_addrs = 0; + wake_up_interruptible(&adap->kthread_waitq); + cec_post_state_event(adap); + mutex_unlock(&adap->lock); + return 0; + } + if (log_addrs->num_log_addrs > CEC_MAX_LOG_ADDRS) { + dprintk(1, "num_log_addrs > %d\n", CEC_MAX_LOG_ADDRS); + return -EINVAL; + } + if (log_addrs->cec_version != CEC_OP_CEC_VERSION_1_4 && + log_addrs->cec_version != CEC_OP_CEC_VERSION_2_0) { + dprintk(1, "unsupported CEC version\n"); + return -EINVAL; + } + if (log_addrs->num_log_addrs > 1) + for (i = 0; i < log_addrs->num_log_addrs; i++) + if (log_addrs->log_addr_type[i] == + CEC_LOG_ADDR_TYPE_UNREGISTERED) { + dprintk(1, "can't claim unregistered logical address\n"); + return -EINVAL; + } + for (i = 0; i < log_addrs->num_log_addrs; i++) { + u8 *features = log_addrs->features[i]; + bool op_is_dev_features = false; + + if (log_addrs->primary_device_type[i] > + CEC_OP_PRIM_DEVTYPE_PROCESSOR) { + dprintk(1, "unknown primary device type\n"); + return -EINVAL; + } + if (log_addrs->primary_device_type[i] == 2) { + dprintk(1, "invalid primary device type\n"); + return -EINVAL; + } + if (log_addrs->log_addr_type[i] > CEC_LOG_ADDR_TYPE_UNREGISTERED) { + dprintk(1, "unknown logical address type\n"); + return -EINVAL; + } + if (log_addrs->cec_version < CEC_OP_CEC_VERSION_2_0) + continue; + + for (i = 0; i < sizeof(adap->features[0]); i++) { + if ((features[i] & 0x80) == 0) { + if (op_is_dev_features) + break; + op_is_dev_features = true; + } + } + if (!op_is_dev_features || i == sizeof(adap->features[0])) { + dprintk(1, "malformed features\n"); + return -EINVAL; + } + } + + /* + * For phys addr 0xffff only the Unregistered functionality is allowed. + */ + if (adap->phys_addr == CEC_PHYS_ADDR_INVALID && + (log_addrs->num_log_addrs > 1 || + log_addrs->log_addr_type[0] != CEC_LOG_ADDR_TYPE_UNREGISTERED)) { + dprintk(1, "physical addr 0xffff only allows unregistered logical address\n"); + return -EINVAL; + } + + cla_int = kzalloc(sizeof(*cla_int), GFP_KERNEL); + if (cla_int == NULL) + return -ENOMEM; + mutex_lock(&adap->lock); + if (adap->is_configuring || adap->is_configured) { + mutex_unlock(&adap->lock); + kfree(cla_int); + return -EBUSY; + } + adap->is_configuring = true; + mutex_unlock(&adap->lock); + init_completion(&cla_int->c); + cla_int->free_on_exit = !block; + cla_int->adap = adap; + cla_int->log_addrs = *log_addrs; + adap->kthread_config = kthread_run(cec_config_thread_func, cla_int, + "ceccfg-%s", adap->name); + if (block) { + wait_for_completion(&cla_int->c); + *log_addrs = cla_int->log_addrs; + kfree(cla_int); + } + return 0; +} +EXPORT_SYMBOL_GPL(cec_claim_log_addrs); + +void cec_log_status(struct cec_adapter *adap) +{ + dprintk(0, "enabled: %d\n", adap->is_enabled); + dprintk(0, "configured: %d\n", adap->is_configured); + dprintk(0, "configuring: %d\n", adap->is_configuring); + dprintk(0, "phys_addr: %04x\n", adap->phys_addr); + dprintk(0, "number of LAs: %d\n", adap->num_log_addrs); + if (adap->cec_owner) + dprintk(0, "has owner\n"); + if (adap->passthrough) + dprintk(0, "has passthrough\n"); + if (mutex_is_locked(&adap->lock)) + dprintk(0, "is locked\n"); +} +EXPORT_SYMBOL_GPL(cec_log_status); + +void cec_connected_inputs(struct cec_adapter *adap, u16 connected_inputs) +{ + if (adap->connected_inputs != connected_inputs) { + adap->connected_inputs = connected_inputs; + if (adap->devnode.registered) + cec_post_inputs_event(adap); + } +} +EXPORT_SYMBOL_GPL(cec_connected_inputs); + +u8 cec_sink_cdc_hpd(struct cec_adapter *adap, u8 input_port, u8 cdc_hpd_state) +{ + struct cec_msg msg = { }; + int err; + + if (!adap->is_configured) + return CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE; + + msg.msg[0] = (adap->log_addr[0] << 4) | 0xf; + cec_msg_cdc_hpd_set_state(&msg, input_port, cdc_hpd_state); + err = cec_transmit_msg(adap, &msg, false); + if (err) + return CEC_OP_HPD_ERROR_OTHER; + return CEC_OP_HPD_ERROR_NONE; +} +EXPORT_SYMBOL_GPL(cec_sink_cdc_hpd); + +static unsigned cec_poll(struct file *filp, + struct poll_table_struct *poll) +{ + struct cec_devnode *devnode = cec_devnode_data(filp); + struct cec_fh *fh = filp->private_data; + struct cec_adapter *adap = fh->adap; + unsigned res = 0; + + if (!devnode->registered) + return POLLERR | POLLHUP; + mutex_lock(&adap->lock); + if (adap->is_configured) + res |= POLLOUT | POLLWRNORM; + if (fh->queued_msgs) + res |= POLLIN | POLLRDNORM; + if (fh->events) + res |= POLLPRI; + poll_wait(filp, &fh->wait, poll); + mutex_unlock(&adap->lock); + return res; +} + +static long cec_ioctl(struct file *filp, unsigned cmd, unsigned long arg) +{ + struct cec_devnode *devnode = cec_devnode_data(filp); + struct cec_fh *fh = filp->private_data; + struct cec_adapter *adap = fh->adap; + bool block = !(filp->f_flags & O_NONBLOCK); + void __user *parg = (void __user *)arg; + int err = 0; + + if (!devnode->registered) + return -EIO; + + switch (cmd) { + case CEC_ADAP_G_CAPS: { + struct cec_caps caps; + + caps.available_log_addrs = adap->available_log_addrs; + caps.capabilities = adap->capabilities; + caps.ninputs = adap->ninputs; + memset(caps.reserved, 0, sizeof(caps.reserved)); + if (copy_to_user(parg, &caps, sizeof(caps))) + return -EFAULT; + break; + } + + case CEC_TRANSMIT: { + struct cec_msg msg; + + if (!(adap->capabilities & CEC_CAP_IO)) + return -ENOTTY; + if (copy_from_user(&msg, parg, sizeof(msg))) + return -EFAULT; + memset(msg.reserved, 0, sizeof(msg.reserved)); + mutex_lock(&adap->lock); + if (!adap->is_configured) { + err = -ENONET; + } else if (fh->monitor) { + err = -EPERM; + } else if (adap->cec_owner && adap->cec_owner != fh) { + err = -EBUSY; + } else { + if (block || !msg.reply) + fh = NULL; + err = cec_transmit_msg_fh(adap, &msg, fh, block); + } + mutex_unlock(&adap->lock); + if (err) + return err; + if (copy_to_user(parg, &msg, sizeof(msg))) + return -EFAULT; + break; + } + + case CEC_RECEIVE: { + struct cec_msg msg; + + if (!(adap->capabilities & CEC_CAP_IO)) + return -ENOTTY; + if (copy_from_user(&msg, parg, sizeof(msg))) + return -EFAULT; + memset(msg.reserved, 0, sizeof(msg.reserved)); + mutex_lock(&adap->lock); + if (!adap->is_configured) + err = -ENONET; + mutex_unlock(&adap->lock); + if (err) + return err; + if (!fh->monitor && adap->cec_owner != fh) + return -EPERM; + + err = cec_receive_msg(fh, &msg, block); + if (err) + return err; + if (copy_to_user(parg, &msg, sizeof(msg))) + return -EFAULT; + break; + } + + case CEC_DQEVENT: { + struct cec_event_queue *evq = NULL; + struct cec_event *ev = NULL; + u64 ts = ~0ULL; + unsigned i; + + mutex_lock(&fh->lock); + for (i = 0; i < CEC_NUM_EVENTS; i++) { + struct cec_event_queue *q = fh->evqueue + i; + + if (q->num_events && q->events->ts <= ts) { + evq = q; + ev = q->events; + ts = ev->ts; + } + } + err = -EAGAIN; + if (ev) { + if (copy_to_user(parg, ev, sizeof(*ev))) { + err = -EFAULT; + } else { + unsigned j; + + evq->num_events--; + fh->events--; + /* + * Reset lost message counter after returning + * this event. + */ + if (ev->event == CEC_EVENT_LOST_MSGS) + fh->lost_msgs = 0; + for (j = 0; j < evq->num_events; j++) + evq->events[j] = evq->events[j + 1]; + err = 0; + } + } + mutex_unlock(&fh->lock); + return err; + } + + case CEC_ADAP_G_STATE: { + u32 state; + + mutex_lock(&adap->lock); + state = adap->is_enabled; + mutex_unlock(&adap->lock); + if (copy_to_user(parg, &state, sizeof(state))) + return -EFAULT; + break; + } + + case CEC_ADAP_S_STATE: { + u32 state; + + if (!(adap->capabilities & CEC_CAP_STATE)) + return -ENOTTY; + if (copy_from_user(&state, parg, sizeof(state))) + return -EFAULT; + if (state > CEC_ADAP_ENABLED) + return -EINVAL; + mutex_lock(&adap->lock); + if (state != adap->is_enabled) { + if (adap->is_configuring) + err = -EBUSY; + else if (adap->cec_owner && adap->cec_owner != fh) + err = -EBUSY; + else + err = _cec_enable(adap, state); + } + mutex_unlock(&adap->lock); + break; + } + + case CEC_ADAP_G_PHYS_ADDR: { + u16 phys_addr; + + mutex_lock(&adap->lock); + phys_addr = adap->phys_addr; + if (copy_to_user(parg, &phys_addr, sizeof(adap->phys_addr))) + err = -EFAULT; + mutex_unlock(&adap->lock); + break; + } + + case CEC_ADAP_S_PHYS_ADDR: { + u16 phys_addr; + + if (!(adap->capabilities & CEC_CAP_PHYS_ADDR)) + return -ENOTTY; + if (copy_from_user(&phys_addr, parg, sizeof(phys_addr))) + return -EFAULT; + mutex_lock(&adap->lock); + if (adap->phys_addr != phys_addr) { + if (adap->is_enabled) + err = -EBUSY; + else if (adap->cec_owner && adap->cec_owner != fh) + err = -EBUSY; + else + cec_set_phys_addr(adap, phys_addr); + } + mutex_unlock(&adap->lock); + break; + } + + case CEC_ADAP_S_LOG_ADDRS: { + struct cec_log_addrs log_addrs; + + if (!(adap->capabilities & CEC_CAP_LOG_ADDRS)) + return -ENOTTY; + if (copy_from_user(&log_addrs, parg, sizeof(log_addrs))) + return -EFAULT; + mutex_lock(&adap->lock); + if (adap->is_configuring) + err = -EBUSY; + else if (log_addrs.num_log_addrs && adap->is_configured) + err = -EBUSY; + else if (adap->cec_owner && adap->cec_owner != fh) + err = -EBUSY; + mutex_unlock(&adap->lock); + if (err) + break; + + memset(log_addrs.reserved, 0, sizeof(log_addrs.reserved)); + err = cec_claim_log_addrs(adap, &log_addrs, block); + if (err) + return err; + + if (filp->f_flags & O_NONBLOCK) { + if (copy_to_user(parg, &log_addrs, sizeof(log_addrs))) + return -EFAULT; + break; + } + + /* fall through */ + } + + case CEC_ADAP_G_LOG_ADDRS: { + struct cec_log_addrs log_addrs = { }; + unsigned i; + + mutex_lock(&adap->lock); + log_addrs.cec_version = adap->cec_version; + log_addrs.num_log_addrs = adap->num_log_addrs; + strlcpy(log_addrs.osd_name, adap->osd_name, + sizeof(log_addrs.osd_name)); + for (i = 0; i < adap->num_log_addrs; i++) { + log_addrs.primary_device_type[i] = adap->prim_device[i]; + log_addrs.log_addr_type[i] = adap->log_addr_type[i]; + log_addrs.log_addr[i] = adap->log_addr[i]; + log_addrs.all_device_types[i] = adap->all_device_types[i]; + memcpy(log_addrs.features[i], adap->features[i], + sizeof(log_addrs.features[i])); + } + mutex_unlock(&adap->lock); + + if (copy_to_user(parg, &log_addrs, sizeof(log_addrs))) + return -EFAULT; + break; + } + + case CEC_ADAP_G_VENDOR_ID: + mutex_lock(&adap->lock); + if (copy_to_user(parg, &adap->vendor_id, + sizeof(adap->vendor_id))) + err = -EFAULT; + mutex_unlock(&adap->lock); + break; + + case CEC_ADAP_S_VENDOR_ID: { + u32 vendor_id; + + if (!(adap->capabilities & CEC_CAP_VENDOR_ID)) + return -ENOTTY; + if (copy_from_user(&vendor_id, parg, sizeof(vendor_id))) + return -EFAULT; + /* + * Vendor ID is a 24 bit number, so check if the value is + * within the correct range. + */ + if (vendor_id != CEC_VENDOR_ID_NONE && + (vendor_id & 0xff000000) != 0) + return -EINVAL; + mutex_lock(&adap->lock); + if (adap->vendor_id != vendor_id) { + if (adap->is_configuring || adap->is_configured) + err = -EBUSY; + else if (adap->cec_owner && adap->cec_owner != fh) + err = -EBUSY; + else + adap->vendor_id = vendor_id; + } + mutex_unlock(&adap->lock); + break; + } + + case CEC_G_PASSTHROUGH: { + u32 passthrough = CEC_PASSTHROUGH_DISABLED; + + if (!(adap->capabilities & CEC_CAP_PASSTHROUGH)) + return -ENOTTY; + mutex_lock(&adap->lock); + if (adap->cec_owner == fh) + passthrough = adap->passthrough; + mutex_unlock(&adap->lock); + if (copy_to_user(parg, &passthrough, sizeof(passthrough))) + return -EFAULT; + break; + } + + case CEC_G_MONITOR: { + u32 monitor = fh->monitor; + + if (copy_to_user(parg, &monitor, sizeof(monitor))) + return -EFAULT; + break; + } + + case CEC_S_MONITOR: { + u32 monitor; + + if (copy_from_user(&monitor, parg, sizeof(monitor))) + return -EFAULT; + if (monitor > CEC_MONITOR_ENABLED) + return -EINVAL; + if (fh->monitor == monitor) + break; + if (adap->cec_owner == fh) + return -EBUSY; + fh->monitor = monitor; + break; + } + + case CEC_CLAIM: { + u32 passthrough; + + if (copy_from_user(&passthrough, parg, sizeof(passthrough))) + return -EFAULT; + if (passthrough > CEC_PASSTHROUGH_ENABLED) + return -EINVAL; + if (passthrough && + !(adap->capabilities & CEC_CAP_PASSTHROUGH)) + return -EPERM; + mutex_lock(&adap->lock); + if (adap->cec_owner && adap->cec_owner != fh) { + err = -EBUSY; + } else if (fh->monitor) { + err = -EBUSY; + } else { + adap->passthrough = passthrough; + adap->cec_owner = fh; + } + mutex_unlock(&adap->lock); + break; + } + + case CEC_RELEASE: { + if (adap->cec_owner && adap->cec_owner != fh) + return -EBUSY; + mutex_lock(&adap->lock); + adap->cec_owner = NULL; + adap->passthrough = 0; + mutex_unlock(&adap->lock); + break; + } + + default: + return -ENOTTY; + } + return err; +} + +/* Override for the open function */ +static int cec_open(struct inode *inode, struct file *filp) +{ + struct cec_devnode *devnode; + struct cec_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); + struct cec_event ev_state = { + .event = CEC_EVENT_STATE_CHANGE, + .flags = CEC_EVENT_FL_INITIAL_STATE, + }; + struct cec_event ev_inputs = { + .event = CEC_EVENT_INPUTS_CHANGE, + .flags = CEC_EVENT_FL_INITIAL_STATE, + }; + struct cec_event ev_phys_addr = { + .event = CEC_EVENT_PHYS_ADDR_CHANGE, + .flags = CEC_EVENT_FL_INITIAL_STATE, + }; + int ret; + + if (fh == NULL) + return -ENOMEM; + + ret = cec_queue_event_init(fh); + + if (ret) { + kfree(fh); + return ret; + } + + INIT_LIST_HEAD(&fh->msgs); + mutex_init(&fh->lock); + init_waitqueue_head(&fh->wait); + + /* + * Check if the cec device is available. This needs to be done with + * the cec_devnode_lock held to prevent an open/unregister race: + * without the lock, the device could be unregistered and freed between + * the devnode->registered check and get_device() calls, leading to + * a crash. + */ + mutex_lock(&cec_devnode_lock); + devnode = container_of(inode->i_cdev, struct cec_devnode, cdev); + /* + * return ENXIO if the cec device has been removed + * already or if it is not registered anymore. + */ + if (!devnode->registered) { + mutex_unlock(&cec_devnode_lock); + cec_queue_event_free(fh); + kfree(fh); + return -ENXIO; + } + /* and increase the device refcount */ + get_device(&devnode->dev); + mutex_unlock(&cec_devnode_lock); + + fh->adap = to_cec_adapter(devnode); + filp->private_data = fh; + mutex_lock(&devnode->fhs_lock); + ev_state.state_change.state = cec_adap_state(fh->adap); + cec_queue_event_fh(fh, &ev_state, 0); + ev_phys_addr.phys_addr_change.phys_addr = fh->adap->phys_addr; + cec_queue_event_fh(fh, &ev_phys_addr, 0); + if (fh->adap->ninputs) { + ev_inputs.inputs_change.connected_inputs = + fh->adap->connected_inputs; + cec_queue_event_fh(fh, &ev_inputs, 0); + } + list_add(&fh->list, &devnode->fhs); + mutex_unlock(&devnode->fhs_lock); + + return 0; +} + +/* Override for the release function */ +static int cec_release(struct inode *inode, struct file *filp) +{ + struct cec_devnode *devnode = cec_devnode_data(filp); + struct cec_adapter *adap = to_cec_adapter(devnode); + struct cec_fh *fh = filp->private_data; + + if (adap->cec_owner == fh) + adap->cec_owner = NULL; + + mutex_lock(&devnode->fhs_lock); + list_del(&fh->list); + mutex_unlock(&devnode->fhs_lock); + + while (!list_empty(&fh->msgs)) { + struct cec_msg_entry *entry = + list_first_entry(&fh->msgs, struct cec_msg_entry, list); + + list_del(&entry->list); + kfree(entry); + } + cec_queue_event_free(fh); + kfree(fh); + + /* + * decrease the refcount unconditionally since the release() + * return value is ignored. + */ + put_device(&devnode->dev); + filp->private_data = NULL; + return 0; +} + +static const struct file_operations cec_devnode_fops = { + .owner = THIS_MODULE, + .open = cec_open, + .unlocked_ioctl = cec_ioctl, + .release = cec_release, + .poll = cec_poll, + .llseek = no_llseek, +}; + +/* Called when the last user of the cec device exits. */ +static void cec_devnode_release(struct device *cd) +{ + struct cec_devnode *devnode = to_cec_devnode(cd); + + mutex_lock(&cec_devnode_lock); + + /* Mark device node number as free */ + clear_bit(devnode->minor, cec_devnode_nums); + + mutex_unlock(&cec_devnode_lock); + cec_delete_adapter(to_cec_adapter(devnode)); +} + +static struct bus_type cec_bus_type = { + .name = CEC_NAME, +}; + +/** + * cec_devnode_register - register a cec device node + * @devnode: cec device node structure we want to register + * + * The registration code assigns minor numbers and registers the new device node + * with the kernel. An error is returned if no free minor number can be found, + * or if the registration of the device node fails. + * + * Zero is returned on success. + * + * Note that if the cec_devnode_register call fails, the release() callback of + * the cec_devnode structure is *not* called, so the caller is responsible for + * freeing any data. + */ +static int __must_check cec_devnode_register(struct cec_devnode *devnode, + struct module *owner) +{ + int minor; + int ret; + + /* Initialization */ + INIT_LIST_HEAD(&devnode->fhs); + mutex_init(&devnode->fhs_lock); + + /* Part 1: Find a free minor number */ + mutex_lock(&cec_devnode_lock); + minor = find_next_zero_bit(cec_devnode_nums, CEC_NUM_DEVICES, 0); + if (minor == CEC_NUM_DEVICES) { + mutex_unlock(&cec_devnode_lock); + pr_err("could not get a free minor\n"); + return -ENFILE; + } + + set_bit(minor, cec_devnode_nums); + mutex_unlock(&cec_devnode_lock); + + devnode->minor = minor; + devnode->dev.bus = &cec_bus_type; + devnode->dev.devt = MKDEV(MAJOR(cec_dev_t), minor); + devnode->dev.release = cec_devnode_release; + devnode->dev.parent = devnode->parent; + dev_set_name(&devnode->dev, "cec%d", devnode->minor); + device_initialize(&devnode->dev); + + /* Part 2: Initialize and register the character device */ + cdev_init(&devnode->cdev, &cec_devnode_fops); + devnode->cdev.kobj.parent = &devnode->dev.kobj; + devnode->cdev.owner = owner; + + ret = cdev_add(&devnode->cdev, devnode->dev.devt, 1); + if (ret < 0) { + pr_err("%s: cdev_add failed\n", __func__); + goto clr_bit; + } + + ret = device_add(&devnode->dev); + if (ret) + goto cdev_del; + + devnode->registered = true; + return 0; + +cdev_del: + cdev_del(&devnode->cdev); +clr_bit: + clear_bit(devnode->minor, cec_devnode_nums); + put_device(&devnode->dev); + return ret; +} + +/** + * cec_devnode_unregister - unregister a cec device node + * @devnode: the device node to unregister + * + * This unregisters the passed device. Future open calls will be met with + * errors. + * + * This function can safely be called if the device node has never been + * registered or has already been unregistered. + */ +static void cec_devnode_unregister(struct cec_devnode *devnode) +{ + struct cec_fh *fh; + + /* Check if devnode was never registered or already unregistered */ + if (!devnode->registered || devnode->unregistered) + return; + + mutex_lock(&devnode->fhs_lock); + list_for_each_entry(fh, &devnode->fhs, list) + wake_up_interruptible(&fh->wait); + mutex_unlock(&devnode->fhs_lock); + + devnode->registered = false; + devnode->unregistered = true; + device_del(&devnode->dev); + cdev_del(&devnode->cdev); + put_device(&devnode->dev); +} + +struct cec_adapter *cec_create_adapter(const struct cec_adap_ops *ops, + void *priv, const char *name, u32 caps, + u8 ninputs, struct module *owner, struct device *parent) +{ + struct cec_adapter *adap; + int res; + + if (WARN_ON(!parent)) + return ERR_PTR(-EINVAL); + if (WARN_ON(!ninputs && !(caps & CEC_CAP_IS_SOURCE))) + return ERR_PTR(-EINVAL); + if (WARN_ON(!caps)) + return ERR_PTR(-EINVAL); + if (WARN_ON(!ops)) + return ERR_PTR(-EINVAL); + adap = kzalloc(sizeof(*adap), GFP_KERNEL); + if (adap == NULL) + return ERR_PTR(-ENOMEM); + adap->owner = owner; + adap->devnode.parent = parent; + adap->name = kstrdup_const(name, GFP_KERNEL); + if (!adap->name) { + kfree(adap); + return ERR_PTR(-ENOMEM); + } + adap->phys_addr = CEC_PHYS_ADDR_INVALID; + adap->capabilities = caps; + adap->ninputs = ninputs; + adap->is_source = caps & CEC_CAP_IS_SOURCE; + adap->cec_version = CEC_OP_CEC_VERSION_2_0; + adap->vendor_id = CEC_VENDOR_ID_NONE; + adap->available_log_addrs = 1; + adap->sequence = 0; + adap->ops = ops; + adap->priv = priv; + memset(adap->phys_addrs, 0xff, sizeof(adap->phys_addrs)); + mutex_init(&adap->lock); + INIT_LIST_HEAD(&adap->transmit_queue); + INIT_LIST_HEAD(&adap->wait_queue); + init_waitqueue_head(&adap->kthread_waitq); + + adap->kthread = kthread_run(cec_thread_func, adap, "cec-%s", name); + if (IS_ERR(adap->kthread)) { + pr_err("cec-%s: kernel_thread() failed\n", name); + res = PTR_ERR(adap->kthread); + kfree(adap->name); + kfree(adap); + return ERR_PTR(res); + } + + if (!(caps & CEC_CAP_RC)) + return adap; + + /* Prepare the RC input device */ + adap->rc = rc_allocate_device(); + if (!adap->rc) { + pr_err("cec-%s: failed to allocate memory for rc_dev\n", + name); + kthread_stop(adap->kthread); + kfree(adap->name); + kfree(adap); + return ERR_PTR(-ENOMEM); + } + + snprintf(adap->input_name, sizeof(adap->input_name), + "RC for %s", name); + snprintf(adap->input_phys, sizeof(adap->input_phys), + "%s/input0", name); + strlcpy(adap->input_drv, name, sizeof(adap->input_drv)); + + adap->rc->input_name = adap->input_name; + adap->rc->input_phys = adap->input_phys; + adap->rc->input_id.bustype = BUS_CEC; + adap->rc->input_id.vendor = 0; + adap->rc->input_id.product = 0; + adap->rc->input_id.version = 1; + adap->rc->dev.parent = parent; + adap->rc->driver_name = adap->input_drv; + adap->rc->driver_type = RC_DRIVER_CEC; + adap->rc->allowed_protocols = RC_BIT_CEC; + adap->rc->priv = adap; + adap->rc->map_name = RC_MAP_CEC; + adap->rc->timeout = MS_TO_NS(100); + return adap; +} +EXPORT_SYMBOL_GPL(cec_create_adapter); + +int cec_register_adapter(struct cec_adapter *adap) +{ + int res; + + if (adap->capabilities & CEC_CAP_RC) { + res = rc_register_device(adap->rc); + + if (res) { + pr_err("cec-%s: failed to prepare input device\n", + adap->name); + rc_free_device(adap->rc); + adap->rc = NULL; + return res; + } + } + + res = cec_devnode_register(&adap->devnode, adap->owner); + if (res) { + /* Note: rc_unregister also calls rc_free */ + rc_unregister_device(adap->rc); + adap->rc = NULL; + } + return res; +} +EXPORT_SYMBOL_GPL(cec_register_adapter); + +void cec_unregister_adapter(struct cec_adapter *adap) +{ + if (IS_ERR_OR_NULL(adap)) + return; + /* Note: rc_unregister also calls rc_free */ + rc_unregister_device(adap->rc); + adap->rc = NULL; + cec_devnode_unregister(&adap->devnode); +} +EXPORT_SYMBOL_GPL(cec_unregister_adapter); + +void cec_delete_adapter(struct cec_adapter *adap) +{ + if (IS_ERR_OR_NULL(adap)) + return; + kthread_stop(adap->kthread); + if (adap->kthread_config) + kthread_stop(adap->kthread_config); + if (adap->is_enabled) + cec_enable(adap, false); + if (adap->rc) + rc_free_device(adap->rc); + kfree(adap->name); + kfree(adap); +} +EXPORT_SYMBOL_GPL(cec_delete_adapter); + +/* + * Initialise cec for linux + */ +static int __init cec_devnode_init(void) +{ + int ret; + + pr_info("Linux cec interface: v0.10\n"); + ret = alloc_chrdev_region(&cec_dev_t, 0, CEC_NUM_DEVICES, + CEC_NAME); + if (ret < 0) { + pr_warn("cec: unable to allocate major\n"); + return ret; + } + + ret = bus_register(&cec_bus_type); + if (ret < 0) { + unregister_chrdev_region(cec_dev_t, CEC_NUM_DEVICES); + pr_warn("cec: bus_register failed\n"); + return -EIO; + } + + return 0; +} + +static void __exit cec_devnode_exit(void) +{ + bus_unregister(&cec_bus_type); + unregister_chrdev_region(cec_dev_t, CEC_NUM_DEVICES); +} + +subsys_initcall(cec_devnode_init); +module_exit(cec_devnode_exit) + +MODULE_AUTHOR("Hans Verkuil <hans.verkuil at cisco.com>"); +MODULE_DESCRIPTION("Device node registration for cec drivers"); +MODULE_LICENSE("GPL"); diff --git a/include/media/cec.h b/include/media/cec.h new file mode 100644 index 0000000..9c0e4d6 --- /dev/null +++ b/include/media/cec.h @@ -0,0 +1,201 @@ +#ifndef _CEC_DEVNODE_H +#define _CEC_DEVNODE_H + +#include <linux/poll.h> +#include <linux/fs.h> +#include <linux/device.h> +#include <linux/cdev.h> +#include <linux/kthread.h> +#include <linux/timer.h> +#include <linux/cec-funcs.h> +#include <media/rc-core.h> + +#define cec_phys_addr_exp(pa) \ + ((pa) >> 12), ((pa) >> 8) & 0xf, ((pa) >> 4) & 0xf, (pa) & 0xf + +/** + * struct cec_devnode - cec device node + * @dev: cec device + * @cdev: cec character device + * @parent: parent device + * @minor: device node minor number + * @registered: the device was correctly registered + * @unregistered: the device was unregistered + * @fhs_lock: lock to control access to the filehandle list + * @fhs: the list of open filehandles (cec_fh) + * + * This structure represents a cec-related device node. + * + * The @parent is a physical device. It must be set by core or device drivers + * before registering the node. + */ +struct cec_devnode { + /* sysfs */ + struct device dev; + struct cdev cdev; + struct device *parent; + + /* device info */ + int minor; + bool registered; + bool unregistered; + struct mutex fhs_lock; + struct list_head fhs; +}; + +struct cec_adapter; +struct cec_data; + +struct cec_data { + struct list_head list; + struct cec_adapter *adap; + struct cec_msg msg; + struct cec_fh *fh; + struct delayed_work work; + struct completion c; + u8 attempts; + bool new_initiator; + bool blocking; + bool completed; +}; + +struct cec_msg_entry { + struct list_head list; + struct cec_msg msg; +}; + +#define CEC_NUM_EVENTS CEC_EVENT_LOST_MSGS + +struct cec_event_queue { + unsigned elems; + unsigned num_events; + struct cec_event *events; +}; + +struct cec_fh { + struct list_head list; + struct cec_adapter *adap; + bool monitor; + + /* Events */ + wait_queue_head_t wait; + unsigned events; + struct cec_event_queue evqueue[CEC_NUM_EVENTS]; + struct mutex lock; + struct list_head msgs; /* queued messages */ + unsigned queued_msgs; + unsigned lost_msgs; +}; + +struct cec_adap_ops { + /* Low-level callbacks */ + int (*adap_enable)(struct cec_adapter *adap, bool enable); + int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr); + int (*adap_transmit)(struct cec_adapter *adap, u8 attempts, + u32 signal_free_time_ms, struct cec_msg *msg); + + /* High-level CEC message callback */ + int (*received)(struct cec_adapter *adap, struct cec_msg *msg); + + /* High-level CDC Hotplug Detect callbacks */ + u8 (*source_cdc_hpd)(struct cec_adapter *adap, u8 cdc_hpd_state); + void (*sink_cdc_hpd)(struct cec_adapter *adap, u8 cdc_hpd_state, u8 cdc_hpd_error); + + /* High-level Audio Return Channel callbacks */ + int (*sink_initiate_arc)(struct cec_adapter *adap); + void (*sink_terminate_arc)(struct cec_adapter *adap); + void (*source_arc_initiated)(struct cec_adapter *adap); + void (*source_arc_terminated)(struct cec_adapter *adap); +}; + +/* + * The minimum message length you can receive (excepting poll messages) is 2. + * With a transfer rate of at most 36 bytes per second this makes 18 messages + * per second worst case. + * + * We queue at most 10 seconds worth of messages. + */ +#define CEC_MAX_MSG_QUEUE_SZ (18 * 10) + +struct cec_adapter { + struct module *owner; + const char *name; + struct cec_devnode devnode; + struct mutex lock; + struct rc_dev *rc; + + struct list_head transmit_queue; + struct list_head wait_queue; + struct cec_data *transmitting; + + struct task_struct *kthread_config; + + struct task_struct *kthread; + wait_queue_head_t kthread_waitq; + wait_queue_head_t waitq; + + /* Can be set by the main driver: */ + const struct cec_adap_ops *ops; + void *priv; + u32 capabilities; + u8 available_log_addrs; + u8 pwr_state; + u32 vendor_id; + u8 cec_version; + + u16 phys_addr; /* call cec_set_phys_addr() to change this */ + u8 ninputs; + u16 connected_inputs; + bool is_source; + bool is_enabled; + bool is_configuring; + bool is_configured; + u8 num_log_addrs; + struct cec_fh *cec_owner; + u8 prim_device[CEC_MAX_LOG_ADDRS]; + u8 log_addr_type[CEC_MAX_LOG_ADDRS]; + u8 log_addr[CEC_MAX_LOG_ADDRS]; + u16 log_addr_mask; + u8 all_device_types[CEC_MAX_LOG_ADDRS]; + u8 features[CEC_MAX_LOG_ADDRS][12]; + u16 phys_addrs[15]; + char osd_name[15]; + u8 passthrough; + u32 sequence; + + char input_name[32]; + char input_phys[32]; + char input_drv[32]; +}; + +static inline bool cec_has_log_addr(const struct cec_adapter *adap, u8 log_addr) +{ + return adap->log_addr_mask & (1 << log_addr); +} + +#define to_cec_adapter(node) container_of(node, struct cec_adapter, devnode) + +struct cec_adapter *cec_create_adapter(const struct cec_adap_ops *ops, + void *priv, const char *name, u32 caps, + u8 ninputs, struct module *owner, struct device *parent); +int cec_register_adapter(struct cec_adapter *adap); +void cec_unregister_adapter(struct cec_adapter *adap); +void cec_delete_adapter(struct cec_adapter *adap); +int cec_transmit_msg(struct cec_adapter *adap, struct cec_msg *msg, + bool block); +int cec_claim_log_addrs(struct cec_adapter *adap, + struct cec_log_addrs *log_addrs, bool block); +void cec_set_phys_addr(struct cec_adapter *adap, u16 phys_addr); +int _cec_enable(struct cec_adapter *adap, bool enable); +/* cec_enable takes the cec_adapter lock and calls _cec_enable */ +int cec_enable(struct cec_adapter *adap, bool enable); +u8 cec_sink_cdc_hpd(struct cec_adapter *adap, u8 input_port, u8 cdc_hpd_state); +void cec_log_status(struct cec_adapter *adap); + +/* Called by the adapter */ +void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt, + u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt); +void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg); +void cec_connected_inputs(struct cec_adapter *adap, u16 connected_inputs); + +#endif /* _CEC_DEVNODE_H */ diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index ebd10e6..3fd57c6 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -81,6 +81,8 @@ header-y += capi.h header-y += cciss_defs.h header-y += cciss_ioctl.h header-y += cdrom.h +header-y += cec.h +header-y += cec-funcs.h header-y += cgroupstats.h header-y += chio.h header-y += cm4000_cs.h diff --git a/include/uapi/linux/cec-funcs.h b/include/uapi/linux/cec-funcs.h new file mode 100644 index 0000000..65874d2 --- /dev/null +++ b/include/uapi/linux/cec-funcs.h @@ -0,0 +1,1852 @@ +#ifndef _CEC_FUNCS_H +#define _CEC_FUNCS_H + +#include <linux/cec.h> + +/* One Touch Play Feature */ +static inline void cec_msg_active_source(struct cec_msg *msg, __u16 phys_addr) +{ + msg->len = 4; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_ACTIVE_SOURCE; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; +} + +static inline void cec_ops_active_source(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + +static inline void cec_msg_image_view_on(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_IMAGE_VIEW_ON; +} + +static inline void cec_msg_text_view_on(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_TEXT_VIEW_ON; +} + + +/* Routing Control Feature */ +static inline void cec_msg_inactive_source(struct cec_msg *msg, + __u16 phys_addr) +{ + msg->len = 4; + msg->msg[1] = CEC_MSG_INACTIVE_SOURCE; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; +} + +static inline void cec_ops_inactive_source(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + +static inline void cec_msg_request_active_source(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_REQUEST_ACTIVE_SOURCE; + msg->reply = reply ? CEC_MSG_ACTIVE_SOURCE : 0; +} + +static inline void cec_msg_routing_information(struct cec_msg *msg, + __u16 phys_addr) +{ + msg->len = 4; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_ROUTING_INFORMATION; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; +} + +static inline void cec_ops_routing_information(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + +static inline void cec_msg_routing_change(struct cec_msg *msg, + bool reply, + __u16 orig_phys_addr, + __u16 new_phys_addr) +{ + msg->len = 6; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_ROUTING_CHANGE; + msg->msg[2] = orig_phys_addr >> 8; + msg->msg[3] = orig_phys_addr & 0xff; + msg->msg[4] = new_phys_addr >> 8; + msg->msg[5] = new_phys_addr & 0xff; + msg->reply = reply ? CEC_MSG_ROUTING_INFORMATION : 0; +} + +static inline void cec_ops_routing_change(const struct cec_msg *msg, + __u16 *orig_phys_addr, + __u16 *new_phys_addr) +{ + *orig_phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *new_phys_addr = (msg->msg[4] << 8) | msg->msg[5]; +} + +static inline void cec_msg_set_stream_path(struct cec_msg *msg, __u16 phys_addr) +{ + msg->len = 4; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_SET_STREAM_PATH; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; +} + +static inline void cec_ops_set_stream_path(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + + +/* Standby Feature */ +static inline void cec_msg_standby(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_STANDBY; +} + + +/* One Touch Record Feature */ +static inline void cec_msg_record_off(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_RECORD_OFF; +} + +struct cec_op_arib_data { + __u16 transport_id; + __u16 service_id; + __u16 orig_network_id; +}; + +struct cec_op_atsc_data { + __u16 transport_id; + __u16 program_number; +}; + +struct cec_op_dvb_data { + __u16 transport_id; + __u16 service_id; + __u16 orig_network_id; +}; + +struct cec_op_channel_data { + __u8 channel_number_fmt; + __u16 major; + __u16 minor; +}; + +struct cec_op_digital_service_id { + __u8 service_id_method; + __u8 dig_bcast_system; + union { + struct cec_op_arib_data arib; + struct cec_op_atsc_data atsc; + struct cec_op_dvb_data dvb; + struct cec_op_channel_data channel; + }; +}; + +struct cec_op_record_src { + __u8 type; + union { + struct cec_op_digital_service_id digital; + struct { + __u8 ana_bcast_type; + __u16 ana_freq; + __u8 bcast_system; + } analog; + struct { + __u8 plug; + } ext_plug; + struct { + __u16 phys_addr; + } ext_phys_addr; + }; +}; + +static inline void cec_set_digital_service_id(__u8 *msg, + const struct cec_op_digital_service_id *digital) +{ + *msg++ = (digital->service_id_method << 7) | digital->dig_bcast_system; + if (digital->service_id_method == CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL) { + *msg++ = (digital->channel.channel_number_fmt << 2) | + (digital->channel.major >> 8); + *msg++ = digital->channel.major && 0xff; + *msg++ = digital->channel.minor >> 8; + *msg++ = digital->channel.minor & 0xff; + *msg++ = 0; + *msg++ = 0; + return; + } + switch (digital->dig_bcast_system) { + case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_GEN: + case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_CABLE: + case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_SAT: + case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_T: + *msg++ = digital->atsc.transport_id >> 8; + *msg++ = digital->atsc.transport_id & 0xff; + *msg++ = digital->atsc.program_number >> 8; + *msg++ = digital->atsc.program_number & 0xff; + *msg++ = 0; + *msg++ = 0; + break; + default: + *msg++ = digital->dvb.transport_id >> 8; + *msg++ = digital->dvb.transport_id & 0xff; + *msg++ = digital->dvb.service_id >> 8; + *msg++ = digital->dvb.service_id & 0xff; + *msg++ = digital->dvb.orig_network_id >> 8; + *msg++ = digital->dvb.orig_network_id & 0xff; + break; + } +} + +static inline void cec_get_digital_service_id(const __u8 *msg, + struct cec_op_digital_service_id *digital) +{ + digital->service_id_method = msg[0] >> 7; + digital->dig_bcast_system = msg[0] & 0x7f; + if (digital->service_id_method == CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL) { + digital->channel.channel_number_fmt = msg[1] >> 2; + digital->channel.major = ((msg[1] & 3) << 6) | msg[2]; + digital->channel.minor = (msg[3] << 8) | msg[4]; + return; + } + digital->dvb.transport_id = (msg[1] << 8) | msg[2]; + digital->dvb.service_id = (msg[3] << 8) | msg[4]; + digital->dvb.orig_network_id = (msg[5] << 8) | msg[6]; +} + +static inline void cec_msg_record_on_own(struct cec_msg *msg) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_RECORD_ON; + msg->msg[2] = CEC_OP_RECORD_SRC_OWN; +} + +static inline void cec_msg_record_on_digital(struct cec_msg *msg, + const struct cec_op_digital_service_id *digital) +{ + msg->len = 10; + msg->msg[1] = CEC_MSG_RECORD_ON; + msg->msg[2] = CEC_OP_RECORD_SRC_DIGITAL; + cec_set_digital_service_id(msg->msg + 3, digital); +} + +static inline void cec_msg_record_on_analog(struct cec_msg *msg, + __u8 ana_bcast_type, + __u16 ana_freq, + __u8 bcast_system) +{ + msg->len = 7; + msg->msg[1] = CEC_MSG_RECORD_ON; + msg->msg[2] = CEC_OP_RECORD_SRC_ANALOG; + msg->msg[3] = ana_bcast_type; + msg->msg[4] = ana_freq >> 8; + msg->msg[5] = ana_freq & 0xff; + msg->msg[6] = bcast_system; +} + +static inline void cec_msg_record_on_plug(struct cec_msg *msg, + __u8 plug) +{ + msg->len = 4; + msg->msg[1] = CEC_MSG_RECORD_ON; + msg->msg[2] = CEC_OP_RECORD_SRC_EXT_PLUG; + msg->msg[3] = plug; +} + +static inline void cec_msg_record_on_phys_addr(struct cec_msg *msg, + __u16 phys_addr) +{ + msg->len = 5; + msg->msg[1] = CEC_MSG_RECORD_ON; + msg->msg[2] = CEC_OP_RECORD_SRC_EXT_PHYS_ADDR; + msg->msg[3] = phys_addr >> 8; + msg->msg[4] = phys_addr & 0xff; +} + +static inline void cec_msg_record_on(struct cec_msg *msg, + const struct cec_op_record_src *rec_src) +{ + switch (rec_src->type) { + case CEC_OP_RECORD_SRC_OWN: + cec_msg_record_on_own(msg); + break; + case CEC_OP_RECORD_SRC_DIGITAL: + cec_msg_record_on_digital(msg, &rec_src->digital); + break; + case CEC_OP_RECORD_SRC_ANALOG: + cec_msg_record_on_analog(msg, + rec_src->analog.ana_bcast_type, + rec_src->analog.ana_freq, + rec_src->analog.bcast_system); + break; + case CEC_OP_RECORD_SRC_EXT_PLUG: + cec_msg_record_on_plug(msg, rec_src->ext_plug.plug); + break; + case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR: + cec_msg_record_on_phys_addr(msg, + rec_src->ext_phys_addr.phys_addr); + break; + } +} + +static inline void cec_ops_record_on(const struct cec_msg *msg, + struct cec_op_record_src *rec_src) +{ + rec_src->type = msg->msg[2]; + switch (rec_src->type) { + case CEC_OP_RECORD_SRC_OWN: + break; + case CEC_OP_RECORD_SRC_DIGITAL: + cec_get_digital_service_id(msg->msg + 3, &rec_src->digital); + break; + case CEC_OP_RECORD_SRC_ANALOG: + rec_src->analog.ana_bcast_type = msg->msg[3]; + rec_src->analog.ana_freq = + (msg->msg[4] << 8) | msg->msg[5]; + rec_src->analog.bcast_system = msg->msg[6]; + break; + case CEC_OP_RECORD_SRC_EXT_PLUG: + rec_src->ext_plug.plug = msg->msg[3]; + break; + case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR: + rec_src->ext_phys_addr.phys_addr = + (msg->msg[3] << 8) | msg->msg[4]; + break; + } +} + +static inline void cec_msg_record_status(struct cec_msg *msg, __u8 rec_status) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_RECORD_STATUS; + msg->msg[2] = rec_status; +} + +static inline void cec_ops_record_status(const struct cec_msg *msg, + __u8 *rec_status) +{ + *rec_status = msg->msg[2]; +} + +static inline void cec_msg_record_tv_screen(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_RECORD_TV_SCREEN; + msg->reply = reply ? CEC_MSG_RECORD_ON : 0; +} + + +/* Timer Programming Feature */ +static inline void cec_msg_timer_status(struct cec_msg *msg, + __u8 timer_overlap_warning, + __u8 media_info, + __u8 prog_info, + __u8 prog_error, + __u8 duration_hr, + __u8 duration_min) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_TIMER_STATUS; + msg->msg[2] = (timer_overlap_warning << 7) | + (media_info << 5) | + (prog_info ? 0x10 : 0) | + (prog_info ? prog_info : prog_error); + if (prog_info == CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE || + prog_info == CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE || + prog_error == CEC_OP_PROG_ERROR_DUPLICATE) { + msg->len += 2; + msg->msg[3] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[4] = ((duration_min / 10) << 4) | (duration_min % 10); + } +} + +static inline void cec_ops_timer_status(struct cec_msg *msg, + __u8 *timer_overlap_warning, + __u8 *media_info, + __u8 *prog_info, + __u8 *prog_error, + __u8 *duration_hr, + __u8 *duration_min) +{ + *timer_overlap_warning = msg->msg[2] >> 7; + *media_info = (msg->msg[2] >> 5) & 3; + if (msg->msg[2] & 0x10) { + *prog_info = msg->msg[2] & 0xf; + *prog_error = 0; + } else { + *prog_info = 0; + *prog_error = msg->msg[2] & 0xf; + } + if (*prog_info == CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE || + *prog_info == CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE || + *prog_error == CEC_OP_PROG_ERROR_DUPLICATE) { + *duration_hr = (msg->msg[3] >> 4) * 10 + (msg->msg[3] & 0xf); + *duration_min = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + } else { + *duration_hr = *duration_min = 0; + } +} + +static inline void cec_msg_timer_cleared_status(struct cec_msg *msg, + __u8 timer_cleared_status) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_TIMER_CLEARED_STATUS; + msg->msg[2] = timer_cleared_status; +} + +static inline void cec_ops_timer_cleared_status(struct cec_msg *msg, + __u8 *timer_cleared_status) +{ + *timer_cleared_status = msg->msg[2]; +} + +static inline void cec_msg_clear_analogue_timer(struct cec_msg *msg, + bool reply, + __u8 day, + __u8 month, + __u8 start_hr, + __u8 start_min, + __u8 duration_hr, + __u8 duration_min, + __u8 recording_seq, + __u8 ana_bcast_type, + __u16 ana_freq, + __u8 bcast_system) +{ + msg->len = 13; + msg->msg[1] = CEC_MSG_CLEAR_ANALOGUE_TIMER; + msg->msg[2] = day; + msg->msg[3] = month; + /* Hours and minutes are in BCD format */ + msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10); + msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10); + msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10); + msg->msg[8] = recording_seq; + msg->msg[9] = ana_bcast_type; + msg->msg[10] = ana_freq >> 8; + msg->msg[11] = ana_freq & 0xff; + msg->msg[12] = bcast_system; + msg->reply = reply ? CEC_MSG_TIMER_CLEARED_STATUS : 0; +} + +static inline void cec_ops_clear_analogue_timer(struct cec_msg *msg, + __u8 *day, + __u8 *month, + __u8 *start_hr, + __u8 *start_min, + __u8 *duration_hr, + __u8 *duration_min, + __u8 *recording_seq, + __u8 *ana_bcast_type, + __u16 *ana_freq, + __u8 *bcast_system) +{ + *day = msg->msg[2]; + *month = msg->msg[3]; + /* Hours and minutes are in BCD format */ + *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf); + *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf); + *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf); + *recording_seq = msg->msg[8]; + *ana_bcast_type = msg->msg[9]; + *ana_freq = (msg->msg[10] << 8) | msg->msg[11]; + *bcast_system = msg->msg[12]; +} + +static inline void cec_msg_clear_digital_timer(struct cec_msg *msg, + bool reply, + __u8 day, + __u8 month, + __u8 start_hr, + __u8 start_min, + __u8 duration_hr, + __u8 duration_min, + __u8 recording_seq, + const struct cec_op_digital_service_id *digital) +{ + msg->len = 16; + msg->reply = reply ? CEC_MSG_TIMER_CLEARED_STATUS : 0; + msg->msg[1] = CEC_MSG_CLEAR_DIGITAL_TIMER; + msg->msg[2] = day; + msg->msg[3] = month; + /* Hours and minutes are in BCD format */ + msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10); + msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10); + msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10); + msg->msg[8] = recording_seq; + cec_set_digital_service_id(msg->msg + 9, digital); +} + +static inline void cec_ops_clear_digital_timer(struct cec_msg *msg, + __u8 *day, + __u8 *month, + __u8 *start_hr, + __u8 *start_min, + __u8 *duration_hr, + __u8 *duration_min, + __u8 *recording_seq, + struct cec_op_digital_service_id *digital) +{ + *day = msg->msg[2]; + *month = msg->msg[3]; + /* Hours and minutes are in BCD format */ + *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf); + *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf); + *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf); + *recording_seq = msg->msg[8]; + cec_get_digital_service_id(msg->msg + 9, digital); +} + +static inline void cec_msg_clear_ext_timer(struct cec_msg *msg, + bool reply, + __u8 day, + __u8 month, + __u8 start_hr, + __u8 start_min, + __u8 duration_hr, + __u8 duration_min, + __u8 recording_seq, + __u8 ext_src_spec, + __u8 plug, + __u16 phys_addr) +{ + msg->len = 13; + msg->msg[1] = CEC_MSG_CLEAR_EXT_TIMER; + msg->msg[2] = day; + msg->msg[3] = month; + /* Hours and minutes are in BCD format */ + msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10); + msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10); + msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10); + msg->msg[8] = recording_seq; + msg->msg[9] = ext_src_spec; + msg->msg[10] = plug; + msg->msg[11] = phys_addr >> 8; + msg->msg[12] = phys_addr & 0xff; + msg->reply = reply ? CEC_MSG_TIMER_CLEARED_STATUS : 0; +} + +static inline void cec_ops_clear_ext_timer(struct cec_msg *msg, + __u8 *day, + __u8 *month, + __u8 *start_hr, + __u8 *start_min, + __u8 *duration_hr, + __u8 *duration_min, + __u8 *recording_seq, + __u8 *ext_src_spec, + __u8 *plug, + __u16 *phys_addr) +{ + *day = msg->msg[2]; + *month = msg->msg[3]; + /* Hours and minutes are in BCD format */ + *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf); + *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf); + *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf); + *recording_seq = msg->msg[8]; + *ext_src_spec = msg->msg[9]; + *plug = msg->msg[10]; + *phys_addr = (msg->msg[11] << 8) | msg->msg[12]; +} + +static inline void cec_msg_set_analogue_timer(struct cec_msg *msg, + bool reply, + __u8 day, + __u8 month, + __u8 start_hr, + __u8 start_min, + __u8 duration_hr, + __u8 duration_min, + __u8 recording_seq, + __u8 ana_bcast_type, + __u16 ana_freq, + __u8 bcast_system) +{ + msg->len = 13; + msg->msg[1] = CEC_MSG_SET_ANALOGUE_TIMER; + msg->msg[2] = day; + msg->msg[3] = month; + /* Hours and minutes are in BCD format */ + msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10); + msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10); + msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10); + msg->msg[8] = recording_seq; + msg->msg[9] = ana_bcast_type; + msg->msg[10] = ana_freq >> 8; + msg->msg[11] = ana_freq & 0xff; + msg->msg[12] = bcast_system; + msg->reply = reply ? CEC_MSG_TIMER_STATUS : 0; +} + +static inline void cec_ops_set_analogue_timer(struct cec_msg *msg, + __u8 *day, + __u8 *month, + __u8 *start_hr, + __u8 *start_min, + __u8 *duration_hr, + __u8 *duration_min, + __u8 *recording_seq, + __u8 *ana_bcast_type, + __u16 *ana_freq, + __u8 *bcast_system) +{ + *day = msg->msg[2]; + *month = msg->msg[3]; + /* Hours and minutes are in BCD format */ + *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf); + *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf); + *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf); + *recording_seq = msg->msg[8]; + *ana_bcast_type = msg->msg[9]; + *ana_freq = (msg->msg[10] << 8) | msg->msg[11]; + *bcast_system = msg->msg[12]; +} + +static inline void cec_msg_set_digital_timer(struct cec_msg *msg, + bool reply, + __u8 day, + __u8 month, + __u8 start_hr, + __u8 start_min, + __u8 duration_hr, + __u8 duration_min, + __u8 recording_seq, + const struct cec_op_digital_service_id *digital) +{ + msg->len = 16; + msg->reply = reply ? CEC_MSG_TIMER_STATUS : 0; + msg->msg[1] = CEC_MSG_SET_DIGITAL_TIMER; + msg->msg[2] = day; + msg->msg[3] = month; + /* Hours and minutes are in BCD format */ + msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10); + msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10); + msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10); + msg->msg[8] = recording_seq; + cec_set_digital_service_id(msg->msg + 9, digital); +} + +static inline void cec_ops_set_digital_timer(struct cec_msg *msg, + __u8 *day, + __u8 *month, + __u8 *start_hr, + __u8 *start_min, + __u8 *duration_hr, + __u8 *duration_min, + __u8 *recording_seq, + struct cec_op_digital_service_id *digital) +{ + *day = msg->msg[2]; + *month = msg->msg[3]; + /* Hours and minutes are in BCD format */ + *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf); + *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf); + *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf); + *recording_seq = msg->msg[8]; + cec_get_digital_service_id(msg->msg + 9, digital); +} + +static inline void cec_msg_set_ext_timer(struct cec_msg *msg, + bool reply, + __u8 day, + __u8 month, + __u8 start_hr, + __u8 start_min, + __u8 duration_hr, + __u8 duration_min, + __u8 recording_seq, + __u8 ext_src_spec, + __u8 plug, + __u16 phys_addr) +{ + msg->len = 13; + msg->msg[1] = CEC_MSG_SET_EXT_TIMER; + msg->msg[2] = day; + msg->msg[3] = month; + /* Hours and minutes are in BCD format */ + msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10); + msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10); + msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10); + msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10); + msg->msg[8] = recording_seq; + msg->msg[9] = ext_src_spec; + msg->msg[10] = plug; + msg->msg[11] = phys_addr >> 8; + msg->msg[12] = phys_addr & 0xff; + msg->reply = reply ? CEC_MSG_TIMER_STATUS : 0; +} + +static inline void cec_ops_set_ext_timer(struct cec_msg *msg, + __u8 *day, + __u8 *month, + __u8 *start_hr, + __u8 *start_min, + __u8 *duration_hr, + __u8 *duration_min, + __u8 *recording_seq, + __u8 *ext_src_spec, + __u8 *plug, + __u16 *phys_addr) +{ + *day = msg->msg[2]; + *month = msg->msg[3]; + /* Hours and minutes are in BCD format */ + *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf); + *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf); + *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf); + *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf); + *recording_seq = msg->msg[8]; + *ext_src_spec = msg->msg[9]; + *plug = msg->msg[10]; + *phys_addr = (msg->msg[11] << 8) | msg->msg[12]; +} + +static inline void cec_msg_set_timer_program_title(struct cec_msg *msg, + const char *prog_title) +{ + unsigned len = strlen(prog_title); + + if (len > 14) + len = 14; + msg->len = 2 + len; + msg->msg[1] = CEC_MSG_SET_TIMER_PROGRAM_TITLE; + memcpy(msg->msg + 2, prog_title, len); +} + +static inline void cec_ops_set_timer_program_title(const struct cec_msg *msg, + char *prog_title) +{ + unsigned len = msg->len - 2; + + if (len > 14) + len = 14; + memcpy(prog_title, msg->msg + 2, len); + prog_title[len] = '\0'; +} + +/* System Information Feature */ +static inline void cec_msg_cec_version(struct cec_msg *msg, __u8 cec_version) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_CEC_VERSION; + msg->msg[2] = cec_version; +} + +static inline void cec_ops_cec_version(const struct cec_msg *msg, + __u8 *cec_version) +{ + *cec_version = msg->msg[2]; +} + +static inline void cec_msg_get_cec_version(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GET_CEC_VERSION; + msg->reply = reply ? CEC_MSG_CEC_VERSION : 0; +} + +static inline void cec_msg_report_physical_addr(struct cec_msg *msg, + __u16 phys_addr, __u8 prim_devtype) +{ + msg->len = 5; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_REPORT_PHYSICAL_ADDR; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; + msg->msg[4] = prim_devtype; +} + +static inline void cec_ops_report_physical_addr(const struct cec_msg *msg, + __u16 *phys_addr, __u8 *prim_devtype) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *prim_devtype = msg->msg[4]; +} + +static inline void cec_msg_give_physical_addr(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_PHYSICAL_ADDR; + msg->reply = reply ? CEC_MSG_REPORT_PHYSICAL_ADDR : 0; +} + +static inline void cec_msg_set_menu_language(struct cec_msg *msg, + const char *language) +{ + msg->len = 5; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_SET_MENU_LANGUAGE; + memcpy(msg->msg + 2, language, 3); +} + +static inline void cec_ops_set_menu_language(struct cec_msg *msg, + char *language) +{ + memcpy(language, msg->msg + 2, 3); +} + +static inline void cec_msg_get_menu_language(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GET_MENU_LANGUAGE; + msg->reply = reply ? CEC_MSG_SET_MENU_LANGUAGE : 0; +} + +/* + * Assumes a single RC Profile byte and a single Device Features byte, + * i.e. no extended features are supported by this helper function. + * + * As of CEC 2.0 no extended features are defined, should those be added + * in the future, then this function needs to be adapted or a new function + * should be added. + */ +static inline void cec_msg_report_features(struct cec_msg *msg, + __u8 cec_version, __u8 all_device_types, + __u8 rc_profile, __u8 dev_features) +{ + msg->len = 6; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_REPORT_FEATURES; + msg->msg[2] = cec_version; + msg->msg[3] = all_device_types; + msg->msg[4] = rc_profile; + msg->msg[5] = dev_features; +} + +static inline void cec_ops_report_features(const struct cec_msg *msg, + __u8 *cec_version, __u8 *all_device_types, + const __u8 **rc_profile, const __u8 **dev_features) +{ + const __u8 *p = &msg->msg[4]; + + *cec_version = msg->msg[2]; + *all_device_types = msg->msg[3]; + *rc_profile = p; + while (p < &msg->msg[14] && (*p & CEC_OP_FEAT_EXT)) + p++; + if (!(*p & CEC_OP_FEAT_EXT)) { + *dev_features = p + 1; + while (p < &msg->msg[15] && (*p & CEC_OP_FEAT_EXT)) + p++; + } + if (*p & CEC_OP_FEAT_EXT) + *rc_profile = *dev_features = NULL; +} + +static inline void cec_msg_give_features(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_FEATURES; + msg->reply = reply ? CEC_MSG_REPORT_FEATURES : 0; +} + +/* Deck Control Feature */ +static inline void cec_msg_deck_control(struct cec_msg *msg, + __u8 deck_control_mode) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_DECK_CONTROL; + msg->msg[2] = deck_control_mode; +} + +static inline void cec_ops_deck_control(struct cec_msg *msg, + __u8 *deck_control_mode) +{ + *deck_control_mode = msg->msg[2]; +} + +static inline void cec_msg_deck_status(struct cec_msg *msg, + __u8 deck_info) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_DECK_STATUS; + msg->msg[2] = deck_info; +} + +static inline void cec_ops_deck_status(struct cec_msg *msg, + __u8 *deck_info) +{ + *deck_info = msg->msg[2]; +} + +static inline void cec_msg_give_deck_status(struct cec_msg *msg, + bool reply, + __u8 status_req) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_GIVE_DECK_STATUS; + msg->msg[2] = status_req; + msg->reply = reply ? CEC_MSG_DECK_STATUS : 0; +} + +static inline void cec_ops_give_deck_status(struct cec_msg *msg, + __u8 *status_req) +{ + *status_req = msg->msg[2]; +} + +static inline void cec_msg_play(struct cec_msg *msg, + __u8 play_mode) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_PLAY; + msg->msg[2] = play_mode; +} + +static inline void cec_ops_play(struct cec_msg *msg, + __u8 *play_mode) +{ + *play_mode = msg->msg[2]; +} + + +/* Tuner Control Feature */ +struct cec_op_tuner_device_info { + __u8 rec_flag; + __u8 tuner_display_info; + bool is_analog; + union { + struct cec_op_digital_service_id digital; + struct { + __u8 ana_bcast_type; + __u16 ana_freq; + __u8 bcast_system; + } analog; + }; +}; + +static inline void cec_msg_tuner_device_status_analog(struct cec_msg *msg, + __u8 rec_flag, + __u8 tuner_display_info, + __u8 ana_bcast_type, + __u16 ana_freq, + __u8 bcast_system) +{ + msg->len = 7; + msg->msg[1] = CEC_MSG_TUNER_DEVICE_STATUS; + msg->msg[2] = (rec_flag << 7) | tuner_display_info; + msg->msg[3] = ana_bcast_type; + msg->msg[4] = ana_freq >> 8; + msg->msg[5] = ana_freq & 0xff; + msg->msg[6] = bcast_system; +} + +static inline void cec_msg_tuner_device_status_digital(struct cec_msg *msg, + __u8 rec_flag, __u8 tuner_display_info, + const struct cec_op_digital_service_id *digital) +{ + msg->len = 10; + msg->msg[1] = CEC_MSG_TUNER_DEVICE_STATUS; + msg->msg[2] = (rec_flag << 7) | tuner_display_info; + cec_set_digital_service_id(msg->msg + 3, digital); +} + +static inline void cec_msg_tuner_device_status(struct cec_msg *msg, + const struct cec_op_tuner_device_info *tuner_dev_info) +{ + if (tuner_dev_info->is_analog) + cec_msg_tuner_device_status_analog(msg, + tuner_dev_info->rec_flag, + tuner_dev_info->tuner_display_info, + tuner_dev_info->analog.ana_bcast_type, + tuner_dev_info->analog.ana_freq, + tuner_dev_info->analog.bcast_system); + else + cec_msg_tuner_device_status_digital(msg, + tuner_dev_info->rec_flag, + tuner_dev_info->tuner_display_info, + &tuner_dev_info->digital); +} + +static inline void cec_ops_tuner_device_status(struct cec_msg *msg, + struct cec_op_tuner_device_info *tuner_dev_info) +{ + tuner_dev_info->is_analog = msg->len < 10; + tuner_dev_info->rec_flag = msg->msg[2] >> 7; + tuner_dev_info->tuner_display_info = msg->msg[2] & 0x7f; + if (tuner_dev_info->is_analog) { + tuner_dev_info->analog.ana_bcast_type = msg->msg[3]; + tuner_dev_info->analog.ana_freq = (msg->msg[4] << 8) | msg->msg[5]; + tuner_dev_info->analog.bcast_system = msg->msg[6]; + return; + } + cec_get_digital_service_id(msg->msg + 3, &tuner_dev_info->digital); +} + +static inline void cec_msg_give_tuner_device_status(struct cec_msg *msg, + bool reply, + __u8 status_req) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_GIVE_TUNER_DEVICE_STATUS; + msg->msg[2] = status_req; + msg->reply = reply ? CEC_MSG_TUNER_DEVICE_STATUS : 0; +} + +static inline void cec_ops_give_tuner_device_status(struct cec_msg *msg, + __u8 *status_req) +{ + *status_req = msg->msg[2]; +} + +static inline void cec_msg_select_analogue_service(struct cec_msg *msg, + __u8 ana_bcast_type, + __u16 ana_freq, + __u8 bcast_system) +{ + msg->len = 6; + msg->msg[1] = CEC_MSG_SELECT_ANALOGUE_SERVICE; + msg->msg[2] = ana_bcast_type; + msg->msg[3] = ana_freq >> 8; + msg->msg[4] = ana_freq & 0xff; + msg->msg[5] = bcast_system; +} + +static inline void cec_ops_select_analogue_service(struct cec_msg *msg, + __u8 *ana_bcast_type, + __u16 *ana_freq, + __u8 *bcast_system) +{ + *ana_bcast_type = msg->msg[2]; + *ana_freq = (msg->msg[3] << 8) | msg->msg[4]; + *bcast_system = msg->msg[5]; +} + +static inline void cec_msg_select_digital_service(struct cec_msg *msg, + const struct cec_op_digital_service_id *digital) +{ + msg->len = 9; + msg->msg[1] = CEC_MSG_SELECT_DIGITAL_SERVICE; + cec_set_digital_service_id(msg->msg + 2, digital); +} + +static inline void cec_ops_select_digital_service(struct cec_msg *msg, + struct cec_op_digital_service_id *digital) +{ + cec_get_digital_service_id(msg->msg + 2, digital); +} + +static inline void cec_msg_tuner_step_decrement(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_TUNER_STEP_DECREMENT; +} + +static inline void cec_msg_tuner_step_increment(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_TUNER_STEP_INCREMENT; +} + + +/* Vendor Specific Commands Feature */ +static inline void cec_msg_device_vendor_id(struct cec_msg *msg, __u32 vendor_id) +{ + msg->len = 5; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_DEVICE_VENDOR_ID; + msg->msg[2] = vendor_id >> 16; + msg->msg[3] = (vendor_id >> 8) & 0xff; + msg->msg[4] = vendor_id & 0xff; +} + +static inline void cec_ops_device_vendor_id(const struct cec_msg *msg, + __u32 *vendor_id) +{ + *vendor_id = (msg->msg[2] << 16) | (msg->msg[3] << 8) | msg->msg[4]; +} + +static inline void cec_msg_give_device_vendor_id(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_DEVICE_VENDOR_ID; + msg->reply = reply ? CEC_MSG_DEVICE_VENDOR_ID : 0; +} + +static inline void cec_msg_vendor_remote_button_up(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_VENDOR_REMOTE_BUTTON_UP; +} + + +/* OSD Display Feature */ +static inline void cec_msg_set_osd_string(struct cec_msg *msg, + __u8 disp_ctl, + const char *osd) +{ + unsigned len = strlen(osd); + + if (len > 13) + len = 13; + msg->len = 3 + len; + msg->msg[1] = CEC_MSG_SET_OSD_STRING; + msg->msg[2] = disp_ctl; + memcpy(msg->msg + 3, osd, len); +} + +static inline void cec_ops_set_osd_string(const struct cec_msg *msg, + __u8 *disp_ctl, + char *osd) +{ + unsigned len = msg->len - 3; + + *disp_ctl = msg->msg[2]; + if (len > 13) + len = 13; + memcpy(osd, msg->msg + 3, len); + osd[len] = '\0'; +} + + +/* Device OSD Transfer Feature */ +static inline void cec_msg_set_osd_name(struct cec_msg *msg, const char *name) +{ + unsigned len = strlen(name); + + if (len > 14) + len = 14; + msg->len = 2 + len; + msg->msg[1] = CEC_MSG_SET_OSD_NAME; + memcpy(msg->msg + 2, name, len); +} + +static inline void cec_ops_set_osd_name(const struct cec_msg *msg, + char *name) +{ + unsigned len = msg->len - 2; + + if (len > 14) + len = 14; + memcpy(name, msg->msg + 2, len); + name[len] = '\0'; +} + +static inline void cec_msg_give_osd_name(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_OSD_NAME; + msg->reply = reply ? CEC_MSG_SET_OSD_NAME : 0; +} + + +/* Device Menu Control Feature */ +static inline void cec_msg_menu_status(struct cec_msg *msg, + __u8 menu_state) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_MENU_STATUS; + msg->msg[2] = menu_state; +} + +static inline void cec_ops_menu_status(struct cec_msg *msg, + __u8 *menu_state) +{ + *menu_state = msg->msg[2]; +} + +static inline void cec_msg_menu_request(struct cec_msg *msg, + bool reply, + __u8 menu_req) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_MENU_REQUEST; + msg->msg[2] = menu_req; + msg->reply = reply ? CEC_MSG_MENU_STATUS : 0; +} + +static inline void cec_ops_menu_request(struct cec_msg *msg, + __u8 *menu_req) +{ + *menu_req = msg->msg[2]; +} + +struct cec_op_ui_command { + __u8 ui_cmd; + bool has_opt_arg; + union { + struct cec_op_channel_data channel_identifier; + __u8 ui_broadcast_type; + __u8 ui_sound_presentation_control; + __u8 play_mode; + __u8 ui_function_media; + __u8 ui_function_select_av_input; + __u8 ui_function_select_audio_input; + }; +}; + +static inline void cec_msg_user_control_pressed(struct cec_msg *msg, + const struct cec_op_ui_command *ui_cmd) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_USER_CONTROL_PRESSED; + msg->msg[2] = ui_cmd->ui_cmd; + if (!ui_cmd->has_opt_arg) + return; + switch (ui_cmd->ui_cmd) { + case 0x56: + case 0x57: + case 0x60: + case 0x68: + case 0x69: + case 0x6a: + /* The optional operand is one byte for all these ui commands */ + msg->len++; + msg->msg[3] = ui_cmd->play_mode; + break; + case 0x67: + msg->len += 4; + msg->msg[3] = (ui_cmd->channel_identifier.channel_number_fmt << 2) | + (ui_cmd->channel_identifier.major >> 8); + msg->msg[4] = ui_cmd->channel_identifier.major && 0xff; + msg->msg[5] = ui_cmd->channel_identifier.minor >> 8; + msg->msg[6] = ui_cmd->channel_identifier.minor & 0xff; + break; + } +} + +static inline void cec_ops_user_control_pressed(struct cec_msg *msg, + struct cec_op_ui_command *ui_cmd) +{ + ui_cmd->ui_cmd = msg->msg[2]; + ui_cmd->has_opt_arg = false; + if (msg->len == 3) + return; + switch (ui_cmd->ui_cmd) { + case 0x56: + case 0x57: + case 0x60: + case 0x68: + case 0x69: + case 0x6a: + /* The optional operand is one byte for all these ui commands */ + ui_cmd->play_mode = msg->msg[3]; + ui_cmd->has_opt_arg = true; + break; + case 0x67: + if (msg->len < 7) + break; + ui_cmd->has_opt_arg = true; + ui_cmd->channel_identifier.channel_number_fmt = msg->msg[3] >> 2; + ui_cmd->channel_identifier.major = ((msg->msg[3] & 3) << 6) | msg->msg[4]; + ui_cmd->channel_identifier.minor = (msg->msg[5] << 8) | msg->msg[6]; + break; + } +} + +static inline void cec_msg_user_control_released(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_USER_CONTROL_RELEASED; +} + +/* Remote Control Passthrough Feature */ + +/* Power Status Feature */ +static inline void cec_msg_report_power_status(struct cec_msg *msg, + __u8 pwr_state) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_REPORT_POWER_STATUS; + msg->msg[2] = pwr_state; +} + +static inline void cec_ops_report_power_status(const struct cec_msg *msg, + __u8 *pwr_state) +{ + *pwr_state = msg->msg[2]; +} + +static inline void cec_msg_give_device_power_status(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_DEVICE_POWER_STATUS; + msg->reply = reply ? CEC_MSG_REPORT_POWER_STATUS : 0; +} + +/* General Protocol Messages */ +static inline void cec_msg_feature_abort(struct cec_msg *msg, + __u8 abort_msg, __u8 reason) +{ + msg->len = 4; + msg->msg[1] = CEC_MSG_FEATURE_ABORT; + msg->msg[2] = abort_msg; + msg->msg[3] = reason; +} + +static inline void cec_ops_feature_abort(const struct cec_msg *msg, + __u8 *abort_msg, __u8 *reason) +{ + *abort_msg = msg->msg[2]; + *reason = msg->msg[3]; +} + +/* This changes the current message into an abort message */ +static inline void cec_msg_reply_abort(struct cec_msg *msg, __u8 reason) +{ + cec_msg_set_reply_to(msg, msg); + msg->len = 4; + msg->msg[2] = msg->msg[1]; + msg->msg[3] = reason; + msg->msg[1] = CEC_MSG_FEATURE_ABORT; +} + +static inline void cec_msg_abort(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_ABORT; +} + + +/* System Audio Control Feature */ +static inline void cec_msg_report_audio_status(struct cec_msg *msg, + __u8 aud_mute_status, + __u8 aud_vol_status) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_REPORT_AUDIO_STATUS; + msg->msg[2] = (aud_mute_status << 7) | (aud_vol_status & 0x7f); +} + +static inline void cec_ops_report_audio_status(const struct cec_msg *msg, + __u8 *aud_mute_status, + __u8 *aud_vol_status) +{ + *aud_mute_status = msg->msg[2] >> 7; + *aud_vol_status = msg->msg[2] & 0x7f; +} + +static inline void cec_msg_give_audio_status(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_AUDIO_STATUS; + msg->reply = reply ? CEC_MSG_REPORT_AUDIO_STATUS : 0; +} + +static inline void cec_msg_set_system_audio_mode(struct cec_msg *msg, + __u8 sys_aud_status) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_SET_SYSTEM_AUDIO_MODE; + msg->msg[2] = sys_aud_status; +} + +static inline void cec_ops_set_system_audio_mode(const struct cec_msg *msg, + __u8 *sys_aud_status) +{ + *sys_aud_status = msg->msg[2]; +} + +static inline void cec_msg_system_audio_mode_request(struct cec_msg *msg, + bool reply, + __u16 phys_addr) +{ + msg->len = phys_addr == 0xffff ? 2 : 4; + msg->msg[1] = CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; + msg->reply = reply ? CEC_MSG_SET_SYSTEM_AUDIO_MODE : 0; + +} + +static inline void cec_ops_system_audio_mode_request(const struct cec_msg *msg, + __u16 *phys_addr) +{ + if (msg->len < 4) + *phys_addr = 0xffff; + else + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + +static inline void cec_msg_system_audio_mode_status(struct cec_msg *msg, + __u8 sys_aud_status) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_SYSTEM_AUDIO_MODE_STATUS; + msg->msg[2] = sys_aud_status; +} + +static inline void cec_ops_system_audio_mode_status(const struct cec_msg *msg, + __u8 *sys_aud_status) +{ + *sys_aud_status = msg->msg[2]; +} + +static inline void cec_msg_give_system_audio_mode_status(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS; + msg->reply = reply ? CEC_MSG_SYSTEM_AUDIO_MODE_STATUS : 0; +} + +static inline void cec_msg_report_short_audio_descriptor(struct cec_msg *msg, + __u8 num_descriptors, + const __u32 *descriptors) +{ + unsigned i; + + if (num_descriptors > 4) + num_descriptors = 4; + msg->len = 2 + num_descriptors * 3; + msg->msg[1] = CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR; + for (i = 0; i < num_descriptors; i++) { + msg->msg[2 + i * 3] = (descriptors[i] >> 16) & 0xff; + msg->msg[3 + i * 3] = (descriptors[i] >> 8) & 0xff; + msg->msg[4 + i * 3] = descriptors[i] & 0xff; + } +} + +static inline void cec_ops_report_short_audio_descriptor(const struct cec_msg *msg, + __u8 *num_descriptors, + __u32 *descriptors) +{ + unsigned i; + + *num_descriptors = (msg->len - 2) / 3; + if (*num_descriptors > 4) + *num_descriptors = 4; + for (i = 0; i < *num_descriptors; i++) + descriptors[i] = (msg->msg[2 + i * 3] << 16) | + (msg->msg[3 + i * 3] << 8) | + msg->msg[4 + i * 3]; +} + +static inline void cec_msg_request_short_audio_descriptor(struct cec_msg *msg, + __u8 num_descriptors, + const __u8 *audio_format_id, + const __u8 *audio_format_code) +{ + unsigned i; + + if (num_descriptors > 4) + num_descriptors = 4; + msg->len = 2 + num_descriptors; + msg->msg[1] = CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR; + for (i = 0; i < num_descriptors; i++) + msg->msg[2 + i] = (audio_format_id[i] << 6) | (audio_format_code[i] & 0x3f); +} + +static inline void cec_ops_request_short_audio_descriptor(const struct cec_msg *msg, + __u8 *num_descriptors, + __u8 *audio_format_id, + __u8 *audio_format_code) +{ + unsigned i; + + *num_descriptors = msg->len - 2; + if (*num_descriptors > 4) + *num_descriptors = 4; + for (i = 0; i < *num_descriptors; i++) { + audio_format_id[i] = msg->msg[2 + i] >> 6; + audio_format_code[i] = msg->msg[2 + i] & 0x3f; + } +} + + +/* Audio Rate Control Feature */ +static inline void cec_msg_set_audio_rate(struct cec_msg *msg, + __u8 audio_rate) +{ + msg->len = 3; + msg->msg[1] = CEC_MSG_SET_AUDIO_RATE; + msg->msg[2] = audio_rate; +} + +static inline void cec_ops_set_audio_rate(const struct cec_msg *msg, + __u8 *audio_rate) +{ + *audio_rate = msg->msg[2]; +} + + +/* Audio Return Channel Control Feature */ +static inline void cec_msg_report_arc_initiated(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_REPORT_ARC_INITIATED; +} + +static inline void cec_msg_initiate_arc(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_INITIATE_ARC; + msg->reply = reply ? CEC_MSG_REPORT_ARC_INITIATED : 0; +} + +static inline void cec_msg_request_arc_initiation(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_REQUEST_ARC_INITIATION; + msg->reply = reply ? CEC_MSG_INITIATE_ARC : 0; +} + +static inline void cec_msg_report_arc_terminated(struct cec_msg *msg) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_REPORT_ARC_TERMINATED; +} + +static inline void cec_msg_terminate_arc(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_TERMINATE_ARC; + msg->reply = reply ? CEC_MSG_REPORT_ARC_TERMINATED : 0; +} + +static inline void cec_msg_request_arc_termination(struct cec_msg *msg, + bool reply) +{ + msg->len = 2; + msg->msg[1] = CEC_MSG_REQUEST_ARC_TERMINATION; + msg->reply = reply ? CEC_MSG_TERMINATE_ARC : 0; +} + + +/* Dynamic Audio Lipsync Feature */ +/* Only for CEC 2.0 and up */ +static inline void cec_msg_report_current_latency(struct cec_msg *msg, + __u16 phys_addr, + __u8 video_latency, + __u8 low_latency_mode, + __u8 audio_out_compensated, + __u8 audio_out_delay) +{ + msg->len = 7; + msg->msg[1] = CEC_MSG_REPORT_CURRENT_LATENCY; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; + msg->msg[4] = video_latency; + msg->msg[5] = (low_latency_mode << 2) | audio_out_compensated; + msg->msg[6] = audio_out_delay; +} + +static inline void cec_ops_report_current_latency(const struct cec_msg *msg, + __u16 *phys_addr, + __u8 *video_latency, + __u8 *low_latency_mode, + __u8 *audio_out_compensated, + __u8 *audio_out_delay) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *video_latency = msg->msg[4]; + *low_latency_mode = (msg->msg[5] >> 2) & 1; + *audio_out_compensated = msg->msg[5] & 3; + *audio_out_delay = msg->msg[6]; +} + +static inline void cec_msg_request_current_latency(struct cec_msg *msg, + bool reply, + __u16 phys_addr) +{ + msg->len = 4; + msg->msg[1] = CEC_MSG_REQUEST_CURRENT_LATENCY; + msg->msg[2] = phys_addr >> 8; + msg->msg[3] = phys_addr & 0xff; + msg->reply = reply ? CEC_MSG_REPORT_CURRENT_LATENCY : 0; +} + +static inline void cec_ops_request_current_latency(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + + +/* Capability Discovery and Control Feature */ +static inline void cec_msg_cdc_hec_inquire_state(struct cec_msg *msg, + __u16 phys_addr1, + __u16 phys_addr2) +{ + msg->len = 9; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_INQUIRE_STATE; + msg->msg[5] = phys_addr1 >> 8; + msg->msg[6] = phys_addr1 & 0xff; + msg->msg[7] = phys_addr2 >> 8; + msg->msg[8] = phys_addr2 & 0xff; +} + +static inline void cec_ops_cdc_hec_inquire_state(const struct cec_msg *msg, + __u16 *phys_addr, + __u16 *phys_addr1, + __u16 *phys_addr2) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *phys_addr1 = (msg->msg[5] << 8) | msg->msg[6]; + *phys_addr2 = (msg->msg[7] << 8) | msg->msg[8]; +} + +static inline void cec_msg_cdc_hec_report_state(struct cec_msg *msg, + __u16 target_phys_addr, + __u8 hec_func_state, + __u8 host_func_state, + __u8 enc_func_state, + __u8 cdc_errcode, + __u8 has_field, + __u16 hec_field) +{ + msg->len = has_field ? 10 : 8; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_REPORT_STATE; + msg->msg[5] = target_phys_addr >> 8; + msg->msg[6] = target_phys_addr & 0xff; + msg->msg[7] = (hec_func_state << 6) | + (host_func_state << 4) | + (enc_func_state << 2) | + cdc_errcode; + if (has_field) { + msg->msg[8] = hec_field >> 8; + msg->msg[9] = hec_field & 0xff; + } +} + +static inline void cec_ops_cdc_hec_report_state(const struct cec_msg *msg, + __u16 *phys_addr, + __u16 *target_phys_addr, + __u8 *hec_func_state, + __u8 *host_func_state, + __u8 *enc_func_state, + __u8 *cdc_errcode, + __u8 *has_field, + __u16 *hec_field) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *target_phys_addr = (msg->msg[5] << 8) | msg->msg[6]; + *hec_func_state = msg->msg[7] >> 6; + *host_func_state = (msg->msg[7] >> 4) & 3; + *enc_func_state = (msg->msg[7] >> 4) & 3; + *cdc_errcode = msg->msg[7] & 3; + *has_field = msg->len >= 10; + *hec_field = *has_field ? ((msg->msg[8] << 8) | msg->msg[9]) : 0; +} + +static inline void cec_msg_cdc_hec_set_state(struct cec_msg *msg, + __u16 phys_addr1, + __u16 phys_addr2, + __u8 hec_set_state, + __u16 phys_addr3, + __u16 phys_addr4, + __u16 phys_addr5) +{ + msg->len = 10; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_INQUIRE_STATE; + msg->msg[5] = phys_addr1 >> 8; + msg->msg[6] = phys_addr1 & 0xff; + msg->msg[7] = phys_addr2 >> 8; + msg->msg[8] = phys_addr2 & 0xff; + msg->msg[9] = hec_set_state; + if (phys_addr3 != CEC_PHYS_ADDR_INVALID) { + msg->msg[msg->len++] = phys_addr3 >> 8; + msg->msg[msg->len++] = phys_addr3 & 0xff; + if (phys_addr4 != CEC_PHYS_ADDR_INVALID) { + msg->msg[msg->len++] = phys_addr4 >> 8; + msg->msg[msg->len++] = phys_addr4 & 0xff; + if (phys_addr5 != CEC_PHYS_ADDR_INVALID) { + msg->msg[msg->len++] = phys_addr5 >> 8; + msg->msg[msg->len++] = phys_addr5 & 0xff; + } + } + } +} + +static inline void cec_ops_cdc_hec_set_state(const struct cec_msg *msg, + __u16 *phys_addr, + __u16 *phys_addr1, + __u16 *phys_addr2, + __u8 *hec_set_state, + __u16 *phys_addr3, + __u16 *phys_addr4, + __u16 *phys_addr5) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *phys_addr1 = (msg->msg[5] << 8) | msg->msg[6]; + *phys_addr2 = (msg->msg[7] << 8) | msg->msg[8]; + *hec_set_state = msg->msg[9]; + *phys_addr3 = *phys_addr4 = *phys_addr5 = CEC_PHYS_ADDR_INVALID; + if (msg->len >= 12) + *phys_addr3 = (msg->msg[10] << 8) | msg->msg[11]; + if (msg->len >= 14) + *phys_addr4 = (msg->msg[12] << 8) | msg->msg[13]; + if (msg->len >= 16) + *phys_addr5 = (msg->msg[14] << 8) | msg->msg[15]; +} + +static inline void cec_msg_cdc_hec_set_state_adjacent(struct cec_msg *msg, + __u16 phys_addr1, + __u8 hec_set_state) +{ + msg->len = 8; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_SET_STATE_ADJACENT; + msg->msg[5] = phys_addr1 >> 8; + msg->msg[6] = phys_addr1 & 0xff; + msg->msg[7] = hec_set_state; +} + +static inline void cec_ops_cdc_hec_set_state_adjacent(const struct cec_msg *msg, + __u16 *phys_addr, + __u16 *phys_addr1, + __u8 *hec_set_state) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *phys_addr1 = (msg->msg[5] << 8) | msg->msg[6]; + *hec_set_state = msg->msg[7]; +} + +static inline void cec_msg_cdc_hec_request_deactivation(struct cec_msg *msg, + __u16 phys_addr1, + __u16 phys_addr2, + __u16 phys_addr3) +{ + msg->len = 11; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_REQUEST_DEACTIVATION; + msg->msg[5] = phys_addr1 >> 8; + msg->msg[6] = phys_addr1 & 0xff; + msg->msg[7] = phys_addr2 >> 8; + msg->msg[8] = phys_addr2 & 0xff; + msg->msg[9] = phys_addr3 >> 8; + msg->msg[10] = phys_addr3 & 0xff; +} + +static inline void cec_ops_cdc_hec_request_deactivation(const struct cec_msg *msg, + __u16 *phys_addr, + __u16 *phys_addr1, + __u16 *phys_addr2, + __u16 *phys_addr3) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *phys_addr1 = (msg->msg[5] << 8) | msg->msg[6]; + *phys_addr2 = (msg->msg[7] << 8) | msg->msg[8]; + *phys_addr3 = (msg->msg[9] << 8) | msg->msg[10]; +} + +static inline void cec_msg_cdc_hec_notify_alive(struct cec_msg *msg) +{ + msg->len = 5; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_NOTIFY_ALIVE; +} + +static inline void cec_ops_cdc_hec_notify_alive(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + +static inline void cec_msg_cdc_hec_discover(struct cec_msg *msg) +{ + msg->len = 5; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HEC_DISCOVER; +} + +static inline void cec_ops_cdc_hec_discover(const struct cec_msg *msg, + __u16 *phys_addr) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; +} + +static inline void cec_msg_cdc_hpd_set_state(struct cec_msg *msg, + __u8 input_port, + __u8 hpd_state) +{ + msg->len = 6; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HPD_SET_STATE; + msg->msg[5] = (input_port << 4) | hpd_state; +} + +static inline void cec_ops_cdc_hpd_set_state(const struct cec_msg *msg, + __u16 *phys_addr, + __u8 *input_port, + __u8 *hpd_state) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *input_port = msg->msg[5] >> 4; + *hpd_state = msg->msg[5] & 0xf; +} + +static inline void cec_msg_cdc_hpd_report_state(struct cec_msg *msg, + __u8 hpd_state, + __u8 hpd_error) +{ + msg->len = 6; + msg->msg[0] |= 0xf; /* broadcast */ + msg->msg[1] = CEC_MSG_CDC_MESSAGE; + /* msg[2] and msg[3] (phys_addr) are filled in by the CEC framework */ + msg->msg[4] = CEC_MSG_CDC_HPD_REPORT_STATE; + msg->msg[5] = (hpd_state << 4) | hpd_error; +} + +static inline void cec_ops_cdc_hpd_report_state(const struct cec_msg *msg, + __u16 *phys_addr, + __u8 *hpd_state, + __u8 *hpd_error) +{ + *phys_addr = (msg->msg[2] << 8) | msg->msg[3]; + *hpd_state = msg->msg[5] >> 4; + *hpd_error = msg->msg[5] & 0xf; +} + +#endif diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h new file mode 100644 index 0000000..4d9e4af --- /dev/null +++ b/include/uapi/linux/cec.h @@ -0,0 +1,928 @@ +#ifndef _CEC_H +#define _CEC_H + +#include <linux/types.h> + +#define CEC_MAX_MSG_SIZE 16 + +/** + * struct cec_msg - CEC message structure. + * @ts: Timestamp in nanoseconds using CLOCK_MONOTONIC. Set by the + * driver. It is set when the message transmission has finished + * and it is set when a message was received. + * @len: Length in bytes of the message. + * @timeout: The timeout (in ms) that is used to timeout CEC_RECEIVE. + * Set to 0 if you want to wait forever. This timeout can also be + * used with CEC_TRANSMIT as the timeout for waiting for a reply. + * If 0, then it will use a 1 second timeout instead of waiting + * forever as is done with CEC_RECEIVE. + * @sequence: The framework assigns a sequence number to messages that are + * sent. This can be used to track replies to previously sent + * messages. + * @rx_status: The message receive status bits. Set by the driver. + * @tx_status: The message transmit status bits. Set by the driver. + * @msg: The message payload. + * @reply: This field is ignored with CEC_RECEIVE and is only used by + * CEC_TRANSMIT. If non-zero, then wait for a reply with this + * opcode. If there was an error when sending the msg or + * FeatureAbort was returned, then reply is set to 0. + * If reply is non-zero upon return, then len/msg are set to + * the received message. + * If reply is zero upon return and status has the + * CEC_TX_STATUS_FEATURE_ABORT bit set, then len/msg are set to + * the received feature abort message. + * If reply is zero upon return and status has the + * CEC_TX_STATUS_MAX_RETRIES bit set, then no reply was seen at + * all. If reply is non-zero for CEC_TRANSMIT and the message is a + * broadcast, then -EINVAL is returned. + * if reply is non-zero, then timeout is set to 1000 (the required + * maximum response time). + * @tx_arb_lost_cnt: The number of 'Arbitration Lost' events. Set by the driver. + * @tx_nack_cnt: The number of 'Not Acknowledged' events. Set by the driver. + * @tx_low_drive_cnt: The number of 'Low Drive Detected' events. Set by the driver. + * @tx_error_cnt: The number of 'Error' events. Set by the driver. + * @reserved: Reserved fields, both driver and application must zero this + * array. + */ +struct cec_msg { + __u64 ts; + __u32 len; + __u32 timeout; + __u32 sequence; + __u8 rx_status; + __u8 tx_status; + __u8 msg[CEC_MAX_MSG_SIZE]; + __u8 reply; + __u8 tx_arb_lost_cnt; + __u8 tx_nack_cnt; + __u8 tx_low_drive_cnt; + __u8 tx_error_cnt; + __u8 reserved[33]; +}; + +/** + * cec_msg_initiator - return the initiator's logical address. + * @msg: the message structure + */ +static inline __u8 cec_msg_initiator(const struct cec_msg *msg) +{ + return msg->msg[0] >> 4; +} + +/** + * cec_msg_destination - return the destination's logical address. + * @msg: the message structure + */ +static inline __u8 cec_msg_destination(const struct cec_msg *msg) +{ + return msg->msg[0] & 0xf; +} + +/** + * cec_msg_is_broadcast - return true if this is a broadcast message. + * @msg: the message structure + */ +static inline bool cec_msg_is_broadcast(const struct cec_msg *msg) +{ + return (msg->msg[0] & 0xf) == 0xf; +} + +/** + * cec_msg_init - initialize the message structure. + * @msg: the message structure + * @initiator: the logical address of the initiator + * @destination:the logical address of the destination (0xf for broadcast) + * + * The whole structure is zeroed, the len field is set to 1 (i.e. a poll + * message) and the initiator and destination are filled in. + */ +static inline void cec_msg_init(struct cec_msg *msg, + __u8 initiator, __u8 destination) +{ + memset(msg, 0, sizeof(*msg)); + msg->msg[0] = (initiator << 4) | destination; + msg->len = 1; +} + +/** + * cec_msg_set_reply_to - fill in destination/initiator in a reply message. + * @msg: the message structure for the reply + * @orig: the original message structure + * + * Set the msg destination to the orig initiator and the msg initiator to the + * orig destination. Note that msg and orig may be the same pointer, in which + * case the change is done in place. + */ +static inline void cec_msg_set_reply_to(struct cec_msg *msg, struct cec_msg *orig) +{ + /* The destination becomes the initiator and vice versa */ + msg->msg[0] = (cec_msg_destination(orig) << 4) | cec_msg_initiator(orig); +} + +/* cec status field */ +#define CEC_TX_STATUS_OK (1 << 0) +#define CEC_TX_STATUS_ARB_LOST (1 << 1) +#define CEC_TX_STATUS_NACK (1 << 2) +#define CEC_TX_STATUS_LOW_DRIVE (1 << 3) +#define CEC_TX_STATUS_ERROR (1 << 4) +#define CEC_TX_STATUS_MAX_RETRIES (1 << 5) + +#define CEC_RX_STATUS_OK (1 << 0) +#define CEC_RX_STATUS_TIMEOUT (1 << 1) +#define CEC_RX_STATUS_FEATURE_ABORT (1 << 2) + +static inline bool cec_msg_status_is_ok(const struct cec_msg *msg) +{ + if (msg->tx_status && !(msg->tx_status & CEC_TX_STATUS_OK)) + return false; + if (msg->rx_status && !(msg->rx_status & CEC_RX_STATUS_OK)) + return false; + if (!msg->tx_status && !msg->rx_status) + return false; + return !(msg->rx_status & CEC_RX_STATUS_FEATURE_ABORT); +} + +#define CEC_LOG_ADDR_INVALID 0xff +#define CEC_PHYS_ADDR_INVALID 0xffff + +/* + * The maximum number of logical addresses one device can be assigned to. + * The CEC 2.0 spec allows for only 2 logical addresses at the moment. The + * Analog Devices CEC hardware supports 3. So let's go wild and go for 4. + */ +#define CEC_MAX_LOG_ADDRS 4 + +/* The logical address types that the CEC device wants to claim */ +#define CEC_LOG_ADDR_TYPE_TV 0 +#define CEC_LOG_ADDR_TYPE_RECORD 1 +#define CEC_LOG_ADDR_TYPE_TUNER 2 +#define CEC_LOG_ADDR_TYPE_PLAYBACK 3 +#define CEC_LOG_ADDR_TYPE_AUDIOSYSTEM 4 +#define CEC_LOG_ADDR_TYPE_SPECIFIC 5 +#define CEC_LOG_ADDR_TYPE_UNREGISTERED 6 +/* + * Switches should use UNREGISTERED. + * Processors should use SPECIFIC. + */ + +/* + * Use this if there is no vendor ID (CEC_G_VENDOR_ID) or if the vendor ID + * should be disabled (CEC_S_VENDOR_ID) + */ +#define CEC_VENDOR_ID_NONE 0xffffffff + +/* The CEC adapter state */ +#define CEC_ADAP_DISABLED 0 +#define CEC_ADAP_ENABLED 1 + +/* The passthrough mode state */ +#define CEC_PASSTHROUGH_DISABLED 0 +#define CEC_PASSTHROUGH_ENABLED 1 + +/* The monitor state */ +#define CEC_MONITOR_DISABLED 0 +#define CEC_MONITOR_ENABLED 1 + +/* Userspace has to configure the adapter state (enable/disable) */ +#define CEC_CAP_STATE (1 << 0) +/* Userspace has to configure the physical address */ +#define CEC_CAP_PHYS_ADDR (1 << 1) +/* Userspace has to configure the logical addresses */ +#define CEC_CAP_LOG_ADDRS (1 << 2) +/* Userspace can transmit and receive messages */ +#define CEC_CAP_IO (1 << 3) +/* Userspace has to configure the vendor id */ +#define CEC_CAP_VENDOR_ID (1 << 4) +/* + * Passthrough all messages instead of processing them. + * Note: ARC and CDC messages are always processed. + */ +#define CEC_CAP_PASSTHROUGH (1 << 5) +/* Supports remote control */ +#define CEC_CAP_RC (1 << 6) +/* Supports ARC */ +#define CEC_CAP_ARC (1 << 7) +/* Supports CDC HPD */ +#define CEC_CAP_CDC_HPD (1 << 8) +/* Is a source */ +#define CEC_CAP_IS_SOURCE (1 << 9) +/* Hardware can monitor all messages, not just directed and broadcast. */ +#define CEC_CAP_PROMISCUOUS (1 << 10) + +/** + * struct cec_caps - CEC capabilities structure. + * @available_log_addrs: number of available logical addresses. + * @capabilities: capabilities of the CEC adapter. + * @ninputs: The number of HDMI inputs controlled by the CEC adapter. + * @reserved: Reserved fields, both driver and application must zero this array. + */ +struct cec_caps { + __u32 available_log_addrs; + __u32 capabilities; + __u8 ninputs; + __u8 reserved[39]; +}; + +/** + * struct cec_log_addrs - CEC logical addresses structure. + * @cec_version: the CEC version that should be used. Set by the caller. + * @num_log_addrs: how many logical addresses should be claimed. Set by the + * caller. + * @primary_device_type: the primary device type for each logical address. + * Set by the caller. + * @log_addr_type: the logical address types. Set by the caller. + * @log_addr: the claimed logical addresses. Set by the driver. + * @osd_name: the OSD name of the device. Set by the caller. + * @all_device_types: CEC 2.0: all device types represented by the logical address. + * Set by the caller. + * @features: CEC 2.0: The logical address features. Set by the caller. + * @reserved: Reserved fields, both driver and application must zero this array. + */ +struct cec_log_addrs { + __u8 cec_version; + __u8 num_log_addrs; + __u8 primary_device_type[CEC_MAX_LOG_ADDRS]; + __u8 log_addr_type[CEC_MAX_LOG_ADDRS]; + __u8 log_addr[CEC_MAX_LOG_ADDRS]; + char osd_name[15]; + + /* CEC 2.0 */ + __u8 all_device_types[CEC_MAX_LOG_ADDRS]; + __u8 features[CEC_MAX_LOG_ADDRS][12]; + + __u8 reserved[63]; +}; + +/* Events */ + +/* Event that occurs when the adapter state changes */ +#define CEC_EVENT_STATE_CHANGE 1 +/* Event that occurs when inputs are connected/disconnected */ +#define CEC_EVENT_INPUTS_CHANGE 2 +/* Event that occurs when the physical address changes */ +#define CEC_EVENT_PHYS_ADDR_CHANGE 3 +/* + * This event is sent when messages are lost because the application + * didn't empty the message queue in time + */ +#define CEC_EVENT_LOST_MSGS 4 + +#define CEC_EVENT_FL_INITIAL_STATE (1 << 0) + +#define CEC_EVENT_STATE_DISABLED 0 +#define CEC_EVENT_STATE_UNCONFIGURED 1 +#define CEC_EVENT_STATE_CONFIGURING 2 +#define CEC_EVENT_STATE_CONFIGURED 3 + +/** + * struct cec_event_state_change - used when the CEC adapter changes state. + * @state: the new state of the CEC adapter. + */ +struct cec_event_state_change { + /* current CEC adapter state */ + __u8 state; +}; + +/** + * struct cec_event_inputs_change - used when HDMI inputs are (de)activated. + * @connected_inputs: which inputs are connected (bit X == input port X). + */ +struct cec_event_inputs_change { + /* bit 0 == input port 0, bit 15 == input port 15 */ + /* currently connected input ports */ + __u16 connected_inputs; +}; + +/** + * struct cec_event_phys_addr_change - used when the physical address changes. + * @phys_addr: the new physical address. + */ +struct cec_event_phys_addr_change { + __u16 phys_addr; +}; + +/** + * struct cec_event_lost_msgs - tells you how many messages were lost due. + * @lost_msgs: how many messages were lost. + */ +struct cec_event_lost_msgs { + __u32 lost_msgs; +}; + +/** + * struct cec_event - CEC event structure + * @ts: the timestamp of when the event was sent. + * @event: the event. + * @reserved: Reserved fields, both driver and application must zero this + * array. + * @state_change: the event payload for CEC_EVENT_STATE_CHANGE. + * @inputs_change: the event payload for CEC_EVENT_INPUTS_CHANGE. + * @phys_addr_change: the event payload for CEC_EVENT_PHYS_ADDR_CHANGE. + * @lost_msgs: the event payload for CEC_EVENT_LOST_MSGS. + * @raw: array to pad the union. + */ +struct cec_event { + __u64 ts; + __u32 event; + __u32 flags; + __u32 reserved[6]; + union { + struct cec_event_state_change state_change; + struct cec_event_inputs_change inputs_change; + struct cec_event_phys_addr_change phys_addr_change; + struct cec_event_lost_msgs lost_msgs; + __u32 raw[16]; + }; +}; + +/* ioctls */ + +/* Adapter capabilities */ +#define CEC_ADAP_G_CAPS _IOWR('a', 0, struct cec_caps) + +/* + * Configure the CEC adapter. It sets the device type and which + * logical types it will try to claim. It will return which + * logical addresses it could actually claim. + * An error is returned if the adapter is disabled or if there + * is no physical address assigned. + */ + +#define CEC_ADAP_G_LOG_ADDRS _IOR ('a', 1, struct cec_log_addrs) +#define CEC_ADAP_S_LOG_ADDRS _IOWR('a', 2, struct cec_log_addrs) + +/* + * Enable/disable the adapter. The Set state ioctl may not + * be available if that is handled internally. + */ +#define CEC_ADAP_G_STATE _IOR ('a', 3, __u32) +#define CEC_ADAP_S_STATE _IOW ('a', 4, __u32) + +/* + * phys_addr is either 0 (if this is the CEC root device) + * or a valid physical address obtained from the sink's EDID + * as read by this CEC device (if this is a source device) + * or a physical address obtained and modified from a sink + * EDID and used for a sink CEC device. + * If nothing is connected, then phys_addr is 0xffff. + * See HDMI 1.4b, section 8.7 (Physical Address). + * + * The Set ioctl may not be available if that is handled + * internally. + */ +#define CEC_ADAP_G_PHYS_ADDR _IOR ('a', 5, __u16) +#define CEC_ADAP_S_PHYS_ADDR _IOW ('a', 6, __u16) + +/* + * Read and set the vendor ID of the CEC adapter. + */ +#define CEC_ADAP_G_VENDOR_ID _IOR ('a', 7, __u32) +#define CEC_ADAP_S_VENDOR_ID _IOW ('a', 8, __u32) + +/* + * Read and set the monitor state of the filehandle. + */ +#define CEC_G_MONITOR _IOR ('a', 9, __u32) +#define CEC_S_MONITOR _IOW ('a', 10, __u32) + +/* + * Claim message handling and set passthrough mode, release message handling + * and get passthrough mode for this filehandle. + */ +#define CEC_CLAIM _IOW ('a', 11, __u32) +#define CEC_RELEASE _IO ('a', 12) +#define CEC_G_PASSTHROUGH _IOR ('a', 13, __u32) + +/* Transmit/receive a CEC command */ +#define CEC_TRANSMIT _IOWR('a', 14, struct cec_msg) +#define CEC_RECEIVE _IOWR('a', 15, struct cec_msg) + +/* Dequeue CEC events */ +#define CEC_DQEVENT _IOWR('a', 16, struct cec_event) + +/* + * The remainder of this header defines all CEC messages and operands. + * The format matters since it the cec-ctl utility parses it to generate + * code for implementing all these messages. + * + * Comments ending with 'Feature' group messages for each feature. + * If messages are part of multiple features, then the "Has also" + * comment is used to list the previously defined messages that are + * supported by the feature. + * + * Before operands are defined a comment is added that gives the + * name of the operand and in brackets the variable name of the + * corresponding argument in the cec-funcs.h function. + */ + +/* Messages */ + +/* One Touch Play Feature */ +#define CEC_MSG_ACTIVE_SOURCE 0x82 +#define CEC_MSG_IMAGE_VIEW_ON 0x04 +#define CEC_MSG_TEXT_VIEW_ON 0x0d + + +/* Routing Control Feature */ + +/* + * Has also: + * CEC_MSG_ACTIVE_SOURCE + */ + +#define CEC_MSG_INACTIVE_SOURCE 0x9d +#define CEC_MSG_REQUEST_ACTIVE_SOURCE 0x85 +#define CEC_MSG_ROUTING_CHANGE 0x80 +#define CEC_MSG_ROUTING_INFORMATION 0x81 +#define CEC_MSG_SET_STREAM_PATH 0x86 + + +/* Standby Feature */ +#define CEC_MSG_STANDBY 0x36 + + +/* One Touch Record Feature */ +#define CEC_MSG_RECORD_OFF 0x0b +#define CEC_MSG_RECORD_ON 0x09 +/* Record Source Type Operand (rec_src_type) */ +#define CEC_OP_RECORD_SRC_OWN 1 +#define CEC_OP_RECORD_SRC_DIGITAL 2 +#define CEC_OP_RECORD_SRC_ANALOG 3 +#define CEC_OP_RECORD_SRC_EXT_PLUG 4 +#define CEC_OP_RECORD_SRC_EXT_PHYS_ADDR 5 +/* Service Identification Method Operand (service_id_method) */ +#define CEC_OP_SERVICE_ID_METHOD_BY_DIG_ID 0 +#define CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL 1 +/* Digital Service Broadcast System Operand (dig_bcast_system) */ +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_GEN 0x00 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_GEN 0x01 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_GEN 0x02 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_BS 0x08 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_CS 0x09 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_T 0x0a +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_CABLE 0x10 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_SAT 0x11 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_T 0x12 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_C 0x18 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_S 0x19 +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_S2 0x1a +#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_T 0x1b +/* Analogue Broadcast Type Operand (ana_bcast_type) */ +#define CEC_OP_ANA_BCAST_TYPE_CABLE 0 +#define CEC_OP_ANA_BCAST_TYPE_SATELLITE 1 +#define CEC_OP_ANA_BCAST_TYPE_TERRESTRIAL 2 +/* Broadcast System Operand (bcast_system) */ +#define CEC_OP_BCAST_SYSTEM_PAL_BG 0x00 +#define CEC_OP_BCAST_SYSTEM_SECAM_LQ 0x01 /* SECAM L' */ +#define CEC_OP_BCAST_SYSTEM_PAL_M 0x02 +#define CEC_OP_BCAST_SYSTEM_NTSC_M 0x03 +#define CEC_OP_BCAST_SYSTEM_PAL_I 0x04 +#define CEC_OP_BCAST_SYSTEM_SECAM_DK 0x05 +#define CEC_OP_BCAST_SYSTEM_SECAM_BG 0x06 +#define CEC_OP_BCAST_SYSTEM_SECAM_L 0x07 +#define CEC_OP_BCAST_SYSTEM_PAL_DK 0x08 +#define CEC_OP_BCAST_SYSTEM_OTHER 0x1f +/* Channel Number Format Operand (channel_number_fmt) */ +#define CEC_OP_CHANNEL_NUMBER_FMT_1_PART 0x01 +#define CEC_OP_CHANNEL_NUMBER_FMT_2_PART 0x02 + +#define CEC_MSG_RECORD_STATUS 0x0a +/* Record Status Operand (rec_status) */ +#define CEC_OP_RECORD_STATUS_CUR_SRC 0x01 +#define CEC_OP_RECORD_STATUS_DIG_SERVICE 0x02 +#define CEC_OP_RECORD_STATUS_ANA_SERVICE 0x03 +#define CEC_OP_RECORD_STATUS_EXT_INPUT 0x04 +#define CEC_OP_RECORD_STATUS_NO_DIG_SERVICE 0x05 +#define CEC_OP_RECORD_STATUS_NO_ANA_SERVICE 0x06 +#define CEC_OP_RECORD_STATUS_NO_SERVICE 0x07 +#define CEC_OP_RECORD_STATUS_INVALID_EXT_PLUG 0x09 +#define CEC_OP_RECORD_STATUS_INVALID_EXT_PHYS_ADDR 0x0a +#define CEC_OP_RECORD_STATUS_UNSUP_CA 0x0b +#define CEC_OP_RECORD_STATUS_NO_CA_ENTITLEMENTS 0x0c +#define CEC_OP_RECORD_STATUS_CANT_COPY_SRC 0x0d +#define CEC_OP_RECORD_STATUS_NO_MORE_COPIES 0x0e +#define CEC_OP_RECORD_STATUS_NO_MEDIA 0x10 +#define CEC_OP_RECORD_STATUS_PLAYING 0x11 +#define CEC_OP_RECORD_STATUS_ALREADY_RECORDING 0x12 +#define CEC_OP_RECORD_STATUS_MEDIA_PROT 0x13 +#define CEC_OP_RECORD_STATUS_NO_SIGNAL 0x14 +#define CEC_OP_RECORD_STATUS_MEDIA_PROBLEM 0x15 +#define CEC_OP_RECORD_STATUS_NO_SPACE 0x16 +#define CEC_OP_RECORD_STATUS_PARENTAL_LOCK 0x17 +#define CEC_OP_RECORD_STATUS_TERMINATED_OK 0x1a +#define CEC_OP_RECORD_STATUS_ALREADY_TERM 0x1b +#define CEC_OP_RECORD_STATUS_OTHER 0x1f + +#define CEC_MSG_RECORD_TV_SCREEN 0x0f + + +/* Timer Programming Feature */ +#define CEC_MSG_CLEAR_ANALOGUE_TIMER 0x33 +/* Recording Sequence Operand (recording_seq) */ +#define CEC_OP_REC_SEQ_SUNDAY 0x01 +#define CEC_OP_REC_SEQ_MONDAY 0x02 +#define CEC_OP_REC_SEQ_TUESDAY 0x04 +#define CEC_OP_REC_SEQ_WEDNESDAY 0x08 +#define CEC_OP_REC_SEQ_THURSDAY 0x10 +#define CEC_OP_REC_SEQ_FRIDAY 0x20 +#define CEC_OP_REC_SEQ_SATERDAY 0x40 +#define CEC_OP_REC_SEQ_ONCE_ONLY 0x00 + +#define CEC_MSG_CLEAR_DIGITAL_TIMER 0x99 + +#define CEC_MSG_CLEAR_EXT_TIMER 0xa1 +/* External Source Specifier Operand (ext_src_spec) */ +#define CEC_OP_EXT_SRC_PLUG 0x04 +#define CEC_OP_EXT_SRC_PHYS_ADDR 0x05 + +#define CEC_MSG_SET_ANALOGUE_TIMER 0x34 +#define CEC_MSG_SET_DIGITAL_TIMER 0x97 +#define CEC_MSG_SET_EXT_TIMER 0xa2 + +#define CEC_MSG_SET_TIMER_PROGRAM_TITLE 0x67 +#define CEC_MSG_TIMER_CLEARED_STATUS 0x43 +/* Timer Cleared Status Data Operand (timer_cleared_status) */ +#define CEC_OP_TIMER_CLR_STAT_RECORDING 0x00 +#define CEC_OP_TIMER_CLR_STAT_NO_MATCHING 0x01 +#define CEC_OP_TIMER_CLR_STAT_NO_INFO 0x02 +#define CEC_OP_TIMER_CLR_STAT_CLEARED 0x80 + +#define CEC_MSG_TIMER_STATUS 0x35 +/* Timer Overlap Warning Operand (timer_overlap_warning) */ +#define CEC_OP_TIMER_OVERLAP_WARNING_NO_OVERLAP 0 +#define CEC_OP_TIMER_OVERLAP_WARNING_OVERLAP 1 +/* Media Info Operand (media_info) */ +#define CEC_OP_MEDIA_INFO_UNPROT_MEDIA 0 +#define CEC_OP_MEDIA_INFO_PROT_MEDIA 1 +#define CEC_OP_MEDIA_INFO_NO_MEDIA 2 +/* Programmed Indicator Operand (prog_indicator) */ +#define CEC_OP_PROG_IND_NOT_PROGRAMMED 0 +#define CEC_OP_PROG_IND_PROGRAMMED 1 +/* Programmed Info Operand (prog_info) */ +#define CEC_OP_PROG_INFO_ENOUGH_SPACE 0x08 +#define CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE 0x09 +#define CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE 0x0b +#define CEC_OP_PROG_INFO_NONE_AVAILABLE 0x0a +/* Not Programmed Error Info Operand (prog_error) */ +#define CEC_OP_PROG_ERROR_NO_FREE_TIMER 0x01 +#define CEC_OP_PROG_ERROR_DATE_OUT_OF_RANGE 0x02 +#define CEC_OP_PROG_ERROR_REC_SEQ_ERROR 0x03 +#define CEC_OP_PROG_ERROR_INV_EXT_PLUG 0x04 +#define CEC_OP_PROG_ERROR_INV_EXT_PHYS_ADDR 0x05 +#define CEC_OP_PROG_ERROR_CA_UNSUPP 0x06 +#define CEC_OP_PROG_ERROR_INSUF_CA_ENTITLEMENTS 0x07 +#define CEC_OP_PROG_ERROR_RESOLUTION_UNSUPP 0x08 +#define CEC_OP_PROG_ERROR_PARENTAL_LOCK 0x09 +#define CEC_OP_PROG_ERROR_CLOCK_FAILURE 0x0a +#define CEC_OP_PROG_ERROR_DUPLICATE 0x0e + + +/* System Information Feature */ +#define CEC_MSG_CEC_VERSION 0x9e +/* CEC Version Operand (cec_version) */ +#define CEC_OP_CEC_VERSION_1_3A 4 +#define CEC_OP_CEC_VERSION_1_4 5 +#define CEC_OP_CEC_VERSION_2_0 6 + +#define CEC_MSG_GET_CEC_VERSION 0x9f +#define CEC_MSG_GIVE_PHYSICAL_ADDR 0x83 +#define CEC_MSG_GET_MENU_LANGUAGE 0x91 +#define CEC_MSG_REPORT_PHYSICAL_ADDR 0x84 +/* Primary Device Type Operand (prim_devtype) */ +#define CEC_OP_PRIM_DEVTYPE_TV 0 +#define CEC_OP_PRIM_DEVTYPE_RECORD 1 +#define CEC_OP_PRIM_DEVTYPE_TUNER 3 +#define CEC_OP_PRIM_DEVTYPE_PLAYBACK 4 +#define CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM 5 +#define CEC_OP_PRIM_DEVTYPE_SWITCH 6 +#define CEC_OP_PRIM_DEVTYPE_PROCESSOR 7 + +#define CEC_MSG_SET_MENU_LANGUAGE 0x32 +#define CEC_MSG_REPORT_FEATURES 0xa6 /* HDMI 2.0 */ +/* All Device Types Operand (all_device_types) */ +#define CEC_OP_ALL_DEVTYPE_TV 0x80 +#define CEC_OP_ALL_DEVTYPE_RECORD 0x40 +#define CEC_OP_ALL_DEVTYPE_TUNER 0x20 +#define CEC_OP_ALL_DEVTYPE_PLAYBACK 0x10 +#define CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM 0x08 +#define CEC_OP_ALL_DEVTYPE_SWITCH 0x04 +/* + * And if you wondering what happened to PROCESSOR devices: those should + * be mapped to a SWITCH. + */ + +/* Valid for RC Profile and Device Feature operands */ +#define CEC_OP_FEAT_EXT 0x80 /* Extension bit */ +/* RC Profile Operand (rc_profile) */ +#define CEC_OP_FEAT_RC_TV_PROFILE_NONE 0x00 +#define CEC_OP_FEAT_RC_TV_PROFILE_1 0x02 +#define CEC_OP_FEAT_RC_TV_PROFILE_2 0x06 +#define CEC_OP_FEAT_RC_TV_PROFILE_3 0x0a +#define CEC_OP_FEAT_RC_TV_PROFILE_4 0x0e +#define CEC_OP_FEAT_RC_SRC_HAS_DEV_ROOT_MENU 0x50 +#define CEC_OP_FEAT_RC_SRC_HAS_DEV_SETUP_MENU 0x48 +#define CEC_OP_FEAT_RC_SRC_HAS_CONTENTS_MENU 0x44 +#define CEC_OP_FEAT_RC_SRC_HAS_MEDIA_TOP_MENU 0x42 +#define CEC_OP_FEAT_RC_SRC_HAS_MEDIA_CONTEXT_MENU 0x41 +/* Device Feature Operand (dev_features) */ +#define CEC_OP_FEAT_DEV_HAS_RECORD_TV_SCREEN 0x40 +#define CEC_OP_FEAT_DEV_HAS_SET_OSD_STRING 0x20 +#define CEC_OP_FEAT_DEV_HAS_DECK_CONTROL 0x10 +#define CEC_OP_FEAT_DEV_HAS_SET_AUDIO_RATE 0x08 +#define CEC_OP_FEAT_DEV_SINK_HAS_ARC_TX 0x04 +#define CEC_OP_FEAT_DEV_SOURCE_HAS_ARC_RX 0x02 + +#define CEC_MSG_GIVE_FEATURES 0xa5 /* HDMI 2.0 */ + + +/* Deck Control Feature */ +#define CEC_MSG_DECK_CONTROL 0x42 +/* Deck Control Mode Operand (deck_control_mode) */ +#define CEC_OP_DECK_CTL_MODE_SKIP_FWD 1 +#define CEC_OP_DECK_CTL_MODE_SKIP_REV 2 +#define CEC_OP_DECK_CTL_MODE_STOP 3 +#define CEC_OP_DECK_CTL_MODE_EJECT 4 + +#define CEC_MSG_DECK_STATUS 0x1b +/* Deck Info Operand (deck_info) */ +#define CEC_OP_DECK_INFO_PLAY 0x11 +#define CEC_OP_DECK_INFO_RECORD 0x12 +#define CEC_OP_DECK_INFO_PLAY_REV 0x13 +#define CEC_OP_DECK_INFO_STILL 0x14 +#define CEC_OP_DECK_INFO_SLOW 0x15 +#define CEC_OP_DECK_INFO_SLOW_REV 0x16 +#define CEC_OP_DECK_INFO_FAST_FWD 0x17 +#define CEC_OP_DECK_INFO_FAST_REV 0x18 +#define CEC_OP_DECK_INFO_NO_MEDIA 0x19 +#define CEC_OP_DECK_INFO_STOP 0x1a +#define CEC_OP_DECK_INFO_SKIP_FWD 0x1b +#define CEC_OP_DECK_INFO_SKIP_REV 0x1c +#define CEC_OP_DECK_INFO_INDEX_SEARCH_FWD 0x1d +#define CEC_OP_DECK_INFO_INDEX_SEARCH_REV 0x1e +#define CEC_OP_DECK_INFO_OTHER 0x1f + +#define CEC_MSG_GIVE_DECK_STATUS 0x1a +/* Status Request Operand (status_req) */ +#define CEC_OP_STATUS_REQ_ON 1 +#define CEC_OP_STATUS_REQ_OFF 2 +#define CEC_OP_STATUS_REQ_ONCE 3 + +#define CEC_MSG_PLAY 0x41 +/* Play Mode Operand (play_mode) */ +#define CEC_OP_PLAY_MODE_PLAY_FWD 0x24 +#define CEC_OP_PLAY_MODE_PLAY_REV 0x20 +#define CEC_OP_PLAY_MODE_PLAY_STILL 0x25 +#define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MIN 0x05 +#define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MED 0x06 +#define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MAX 0x07 +#define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MIN 0x09 +#define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MED 0x0a +#define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MAX 0x0b +#define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MIN 0x15 +#define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MED 0x16 +#define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MAX 0x17 +#define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MIN 0x19 +#define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MED 0x1a +#define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MAX 0x1b + + +/* Tuner Control Feature */ +#define CEC_MSG_GIVE_TUNER_DEVICE_STATUS 0x08 +#define CEC_MSG_SELECT_ANALOGUE_SERVICE 0x92 +#define CEC_MSG_SELECT_DIGITAL_SERVICE 0x93 +#define CEC_MSG_TUNER_DEVICE_STATUS 0x07 +/* Recording Flag Operand (rec_flag) */ +#define CEC_OP_REC_FLAG_USED 0 +#define CEC_OP_REC_FLAG_NOT_USED 1 +/* Tuner Display Info Operand (tuner_display_info) */ +#define CEC_OP_TUNER_DISPLAY_INFO_DIGITAL 0 +#define CEC_OP_TUNER_DISPLAY_INFO_NONE 1 +#define CEC_OP_TUNER_DISPLAY_INFO_ANALOGUE 2 + +#define CEC_MSG_TUNER_STEP_DECREMENT 0x06 +#define CEC_MSG_TUNER_STEP_INCREMENT 0x05 + + +/* Vendor Specific Commands Feature */ + +/* + * Has also: + * CEC_MSG_CEC_VERSION + * CEC_MSG_GET_CEC_VERSION + */ +#define CEC_MSG_DEVICE_VENDOR_ID 0x87 +#define CEC_MSG_GIVE_DEVICE_VENDOR_ID 0x8c +#define CEC_MSG_VENDOR_COMMAND 0x89 +#define CEC_MSG_VENDOR_COMMAND_WITH_ID 0xa0 +#define CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN 0x8a +#define CEC_MSG_VENDOR_REMOTE_BUTTON_UP 0x8b + + +/* OSD Display Feature */ +#define CEC_MSG_SET_OSD_STRING 0x64 +/* Display Control Operand (disp_ctl) */ +#define CEC_OP_DISP_CTL_DEFAULT 0x00 +#define CEC_OP_DISP_CTL_UNTIL_CLEARED 0x40 +#define CEC_OP_DISP_CTL_CLEAR 0x80 + + +/* Device OSD Transfer Feature */ +#define CEC_MSG_GIVE_OSD_NAME 0x46 +#define CEC_MSG_SET_OSD_NAME 0x47 + + +/* Device Menu Control Feature */ +#define CEC_MSG_MENU_REQUEST 0x8d +/* Menu Request Type Operand (menu_req) */ +#define CEC_OP_MENU_REQUEST_ACTIVATE 0x00 +#define CEC_OP_MENU_REQUEST_DEACTIVATE 0x01 +#define CEC_OP_MENU_REQUEST_QUERY 0x02 + +#define CEC_MSG_MENU_STATUS 0x8e +/* Menu State Operand (menu_state) */ +#define CEC_OP_MENU_STATE_ACTIVATED 0x00 +#define CEC_OP_MENU_STATE_DEACTIVATED 0x01 + +#define CEC_MSG_USER_CONTROL_PRESSED 0x44 +/* UI Broadcast Type Operand (ui_bcast_type) */ +#define CEC_OP_UI_BCAST_TYPE_TOGGLE_ALL 0x00 +#define CEC_OP_UI_BCAST_TYPE_TOGGLE_DIG_ANA 0x01 +#define CEC_OP_UI_BCAST_TYPE_ANALOGUE 0x10 +#define CEC_OP_UI_BCAST_TYPE_ANALOGUE_T 0x20 +#define CEC_OP_UI_BCAST_TYPE_ANALOGUE_CABLE 0x30 +#define CEC_OP_UI_BCAST_TYPE_ANALOGUE_SAT 0x40 +#define CEC_OP_UI_BCAST_TYPE_DIGITAL 0x50 +#define CEC_OP_UI_BCAST_TYPE_DIGITAL_T 0x60 +#define CEC_OP_UI_BCAST_TYPE_DIGITAL_CABLE 0x70 +#define CEC_OP_UI_BCAST_TYPE_DIGITAL_SAT 0x80 +#define CEC_OP_UI_BCAST_TYPE_DIGITAL_COM_SAT 0x90 +#define CEC_OP_UI_BCAST_TYPE_DIGITAL_COM_SAT2 0x91 +#define CEC_OP_UI_BCAST_TYPE_IP 0xa0 +/* UI Sound Presentation Control Operand (ui_snd_pres_ctl) */ +#define CEC_OP_UI_SND_PRES_CTL_DUAL_MONO 0x10 +#define CEC_OP_UI_SND_PRES_CTL_KARAOKE 0x20 +#define CEC_OP_UI_SND_PRES_CTL_DOWNMIX 0x80 +#define CEC_OP_UI_SND_PRES_CTL_REVERB 0x90 +#define CEC_OP_UI_SND_PRES_CTL_EQUALIZER 0xa0 +#define CEC_OP_UI_SND_PRES_CTL_BASS_UP 0xb1 +#define CEC_OP_UI_SND_PRES_CTL_BASS_NEUTRAL 0xb2 +#define CEC_OP_UI_SND_PRES_CTL_BASS_DOWN 0xb3 +#define CEC_OP_UI_SND_PRES_CTL_TREBLE_UP 0xc1 +#define CEC_OP_UI_SND_PRES_CTL_TREBLE_NEUTRAL 0xc2 +#define CEC_OP_UI_SND_PRES_CTL_TREBLE_DOWN 0xc3 + +#define CEC_MSG_USER_CONTROL_RELEASED 0x45 + + +/* Remote Control Passthrough Feature */ + +/* + * Has also: + * CEC_MSG_USER_CONTROL_PRESSED + * CEC_MSG_USER_CONTROL_RELEASED + */ + + +/* Power Status Feature */ +#define CEC_MSG_GIVE_DEVICE_POWER_STATUS 0x8f +#define CEC_MSG_REPORT_POWER_STATUS 0x90 +/* Power Status Operand (pwr_state) */ +#define CEC_OP_POWER_STATUS_ON 0 +#define CEC_OP_POWER_STATUS_STANDBY 1 +#define CEC_OP_POWER_STATUS_TO_ON 2 +#define CEC_OP_POWER_STATUS_TO_STANDBY 3 + + +/* General Protocol Messages */ +#define CEC_MSG_FEATURE_ABORT 0x00 +/* Abort Reason Operand (reason) */ +#define CEC_OP_ABORT_UNRECOGNIZED_OP 0 +#define CEC_OP_ABORT_INCORRECT_MODE 1 +#define CEC_OP_ABORT_NO_SOURCE 2 +#define CEC_OP_ABORT_INVALID_OP 3 +#define CEC_OP_ABORT_REFUSED 4 +#define CEC_OP_ABORT_UNDETERMINED 5 + +#define CEC_MSG_ABORT 0xff + + +/* System Audio Control Feature */ + +/* + * Has also: + * CEC_MSG_USER_CONTROL_PRESSED + * CEC_MSG_USER_CONTROL_RELEASED + */ +#define CEC_MSG_GIVE_AUDIO_STATUS 0x71 +#define CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS 0x7d +#define CEC_MSG_REPORT_AUDIO_STATUS 0x7a +/* Audio Mute Status Operand (aud_mute_status) */ +#define CEC_OP_AUD_MUTE_STATUS_OFF 0 +#define CEC_OP_AUD_MUTE_STATUS_ON 1 + +#define CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR 0xa3 +#define CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR 0xa4 +#define CEC_MSG_SET_SYSTEM_AUDIO_MODE 0x72 +/* System Audio Status Operand (sys_aud_status) */ +#define CEC_OP_SYS_AUD_STATUS_OFF 0 +#define CEC_OP_SYS_AUD_STATUS_ON 1 + +#define CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST 0x70 +#define CEC_MSG_SYSTEM_AUDIO_MODE_STATUS 0x7e +/* Audio Format ID Operand (audio_format_id) */ +#define CEC_OP_AUD_FMT_ID_CEA861 0 +#define CEC_OP_AUD_FMT_ID_CEA861_CXT 1 + + +/* Audio Rate Control Feature */ +#define CEC_MSG_SET_AUDIO_RATE 0x9a +/* Audio Rate Operand (audio_rate) */ +#define CEC_OP_AUD_RATE_OFF 0 +#define CEC_OP_AUD_RATE_WIDE_STD 1 +#define CEC_OP_AUD_RATE_WIDE_FAST 2 +#define CEC_OP_AUD_RATE_WIDE_SLOW 3 +#define CEC_OP_AUD_RATE_NARROW_STD 4 +#define CEC_OP_AUD_RATE_NARROW_FAST 5 +#define CEC_OP_AUD_RATE_NARROW_SLOW 6 + + +/* Audio Return Channel Control Feature */ +#define CEC_MSG_INITIATE_ARC 0xc0 +#define CEC_MSG_REPORT_ARC_INITIATED 0xc1 +#define CEC_MSG_REPORT_ARC_TERMINATED 0xc2 +#define CEC_MSG_REQUEST_ARC_INITIATION 0xc3 +#define CEC_MSG_REQUEST_ARC_TERMINATION 0xc4 +#define CEC_MSG_TERMINATE_ARC 0xc5 + + +/* Dynamic Audio Lipsync Feature */ +/* Only for CEC 2.0 and up */ +#define CEC_MSG_REQUEST_CURRENT_LATENCY 0xa7 +#define CEC_MSG_REPORT_CURRENT_LATENCY 0xa8 +/* Low Latency Mode Operand (low_latency_mode) */ +#define CEC_OP_LOW_LATENCY_MODE_OFF 0 +#define CEC_OP_LOW_LATENCY_MODE_ON 1 +/* Audio Output Compensated Operand (audio_out_compensated) */ +#define CEC_OP_AUD_OUT_COMPENSATED_NA 0 +#define CEC_OP_AUD_OUT_COMPENSATED_DELAY 1 +#define CEC_OP_AUD_OUT_COMPENSATED_NO_DELAY 2 +#define CEC_OP_AUD_OUT_COMPENSATED_PARTIAL_DELAY 3 + + +/* Capability Discovery and Control Feature */ +#define CEC_MSG_CDC_MESSAGE 0xf8 +/* Ethernet-over-HDMI: nobody ever does this... */ +#define CEC_MSG_CDC_HEC_INQUIRE_STATE 0x00 +#define CEC_MSG_CDC_HEC_REPORT_STATE 0x01 +/* HEC Functionality State Operand (hec_func_state) */ +#define CEC_OP_HEC_FUNC_STATE_NOT_SUPPORTED 0 +#define CEC_OP_HEC_FUNC_STATE_INACTIVE 1 +#define CEC_OP_HEC_FUNC_STATE_ACTIVE 2 +#define CEC_OP_HEC_FUNC_STATE_ACTIVATION_FIELD 3 +/* Host Functionality State Operand (host_func_state) */ +#define CEC_OP_HOST_FUNC_STATE_NOT_SUPPORTED 0 +#define CEC_OP_HOST_FUNC_STATE_INACTIVE 1 +#define CEC_OP_HOST_FUNC_STATE_ACTIVE 2 +/* ENC Functionality State Operand (enc_func_state) */ +#define CEC_OP_ENC_FUNC_STATE_EXT_CON_NOT_SUPPORTED 0 +#define CEC_OP_ENC_FUNC_STATE_EXT_CON_INACTIVE 1 +#define CEC_OP_ENC_FUNC_STATE_EXT_CON_ACTIVE 2 +/* CDC Error Code Operand (cdc_errcode) */ +#define CEC_OP_CDC_ERROR_CODE_NONE 0 +#define CEC_OP_CDC_ERROR_CODE_CAP_UNSUPPORTED 1 +#define CEC_OP_CDC_ERROR_CODE_WRONG_STATE 2 +#define CEC_OP_CDC_ERROR_CODE_OTHER 3 +/* HEC Support Operand (hec_support) */ +#define CEC_OP_HEC_SUPPORT_NO 0 +#define CEC_OP_HEC_SUPPORT_YES 1 +/* HEC Activation Operand (hec_activation) */ +#define CEC_OP_HEC_ACTIVATION_ON 0 +#define CEC_OP_HEC_ACTIVATION_OFF 1 + +#define CEC_MSG_CDC_HEC_SET_STATE_ADJACENT 0x02 +#define CEC_MSG_CDC_HEC_SET_STATE 0x03 +/* HEC Set State Operand (hec_set_state) */ +#define CEC_OP_HEC_SET_STATE_DEACTIVATE 0 +#define CEC_OP_HEC_SET_STATE_ACTIVATE 1 + +#define CEC_MSG_CDC_HEC_REQUEST_DEACTIVATION 0x04 +#define CEC_MSG_CDC_HEC_NOTIFY_ALIVE 0x05 +#define CEC_MSG_CDC_HEC_DISCOVER 0x06 +/* Hotplug Detect messages */ +#define CEC_MSG_CDC_HPD_SET_STATE 0x10 +/* HPD State Operand (hpd_state) */ +#define CEC_OP_HPD_STATE_CP_EDID_DISABLE 0 +#define CEC_OP_HPD_STATE_CP_EDID_ENABLE 1 +#define CEC_OP_HPD_STATE_CP_EDID_DISABLE_ENABLE 2 +#define CEC_OP_HPD_STATE_EDID_DISABLE 3 +#define CEC_OP_HPD_STATE_EDID_ENABLE 4 +#define CEC_OP_HPD_STATE_EDID_DISABLE_ENABLE 5 +#define CEC_MSG_CDC_HPD_REPORT_STATE 0x11 +/* HPD Error Code Operand (hpd_error) */ +#define CEC_OP_HPD_ERROR_NONE 0 +#define CEC_OP_HPD_ERROR_INITIATOR_NOT_CAPABLE 1 +#define CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE 2 +#define CEC_OP_HPD_ERROR_OTHER 3 +#define CEC_OP_HPD_ERROR_NONE_NO_VIDEO 4 + +#endif -- 2.7.0
