static void vivid_cec_xfer_done_worker(struct work_struct *work)
{
struct vivid_cec_work *cw =
container_of(work, struct vivid_cec_work, work.work);
struct vivid_dev *dev = cw->dev;
struct cec_adapter *adap = cw->adap;
u8 dest = cec_msg_destination(&cw->msg);
bool valid_dest;
unsigned int i;
valid_dest = cec_msg_is_broadcast(&cw->msg);
if (!valid_dest)
valid_dest = vivid_cec_find_dest_adap(dev, adap, dest);
cw->tx_status = valid_dest ? CEC_TX_STATUS_OK : CEC_TX_STATUS_NACK;
spin_lock(&dev->cec_slock);
dev->cec_xfer_time_jiffies = 0;
dev->cec_xfer_start_jiffies = 0;
list_del(&cw->list);
spin_unlock(&dev->cec_slock);
cec_transmit_done(cw->adap, cw->tx_status, 0, valid_dest ? 0 : 1, 0, 0);
/* Broadcast message */
if (adap != dev->cec_rx_adap)
cec_received_msg(dev->cec_rx_adap, &cw->msg);
for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
if (adap != dev->cec_tx_adap[i])
cec_received_msg(dev->cec_tx_adap[i], &cw->msg);
kfree(cw);
}
static irqreturn_t s5p_cec_irq_handler_thread(int irq, void *priv)
{
struct s5p_cec_dev *cec = priv;
dev_dbg(cec->dev, "irq processing thread\n");
switch (cec->tx) {
case STATE_DONE:
cec_transmit_done(cec->adap, CEC_TX_STATUS_OK, 0, 0, 0, 0);
cec->tx = STATE_IDLE;
break;
case STATE_ERROR:
cec_transmit_done(cec->adap,
CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_ERROR,
0, 0, 0, 1);
cec->tx = STATE_IDLE;
break;
case STATE_BUSY:
dev_err(cec->dev, "state set to busy, this should not occur here\n");
break;
default:
break;
}
switch (cec->rx) {
case STATE_DONE:
cec_received_msg(cec->adap, &cec->msg);
cec->rx = STATE_IDLE;
break;
default:
break;
}
return IRQ_HANDLED;
}
static void vivid_cec_xfer_done_worker(struct work_struct *work)
{
struct vivid_cec_work *cw =
container_of(work, struct vivid_cec_work, work.work);
struct vivid_dev *dev = cw->dev;
struct cec_adapter *adap = cw->adap;
bool is_poll = cw->msg.len == 1;
u8 dest = cec_msg_destination(&cw->msg);
struct cec_adapter *dest_adap = NULL;
bool valid_dest;
unsigned int i;
valid_dest = cec_msg_is_broadcast(&cw->msg);
if (!valid_dest) {
dest_adap = vivid_cec_find_dest_adap(dev, adap, dest);
if (dest_adap)
valid_dest = true;
}
cw->tx_status = valid_dest ? CEC_TX_STATUS_OK : CEC_TX_STATUS_NACK;
spin_lock(&dev->cec_slock);
dev->cec_xfer_time_jiffies = 0;
dev->cec_xfer_start_jiffies = 0;
list_del(&cw->list);
spin_unlock(&dev->cec_slock);
cec_transmit_done(cw->adap, cw->tx_status, 0, valid_dest ? 0 : 1, 0, 0);
if (!is_poll && dest_adap) {
/* Directed message */
cec_received_msg(dest_adap, &cw->msg);
} else if (!is_poll && valid_dest) {
/* Broadcast message */
if (adap != dev->cec_rx_adap &&
dev->cec_rx_adap->log_addrs.log_addr_mask)
cec_received_msg(dev->cec_rx_adap, &cw->msg);
for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++) {
if (adap == dev->cec_tx_adap[i] ||
!dev->cec_tx_adap[i]->log_addrs.log_addr_mask)
continue;
cec_received_msg(dev->cec_tx_adap[i], &cw->msg);
}
}
kfree(cw);
}
static void handle_cec_message(struct cros_ec_cec *cros_ec_cec)
{
struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
uint8_t *cec_message = cros_ec->event_data.data.cec_message;
unsigned int len = cros_ec->event_size;
cros_ec_cec->rx_msg.len = len;
memcpy(cros_ec_cec->rx_msg.msg, cec_message, len);
cec_received_msg(cros_ec_cec->adap, &cros_ec_cec->rx_msg);
}
static void meson_ao_cec_irq_rx(struct meson_ao_cec_device *ao_cec)
{
int i, ret = 0;
u8 reg;
meson_ao_cec_read(ao_cec, CEC_RX_MSG_STATUS, ®, &ret);
if (reg != RX_DONE)
goto rx_out;
meson_ao_cec_read(ao_cec, CEC_RX_NUM_MSG, ®, &ret);
if (reg != 1)
goto rx_out;
meson_ao_cec_read(ao_cec, CEC_RX_MSG_LENGTH, ®, &ret);
ao_cec->rx_msg.len = reg + 1;
if (ao_cec->rx_msg.len > CEC_MAX_MSG_SIZE)
ao_cec->rx_msg.len = CEC_MAX_MSG_SIZE;
for (i = 0; i < ao_cec->rx_msg.len; i++) {
u8 byte;
meson_ao_cec_read(ao_cec, CEC_RX_MSG_0_HEADER + i, &byte, &ret);
ao_cec->rx_msg.msg[i] = byte;
}
if (ret)
goto rx_out;
cec_received_msg(ao_cec->adap, &ao_cec->rx_msg);
rx_out:
/* Clear Interruption */
writel_relaxed(CEC_INTR_RX, ao_cec->base + CEC_INTR_CLR_REG);
/* Ack RX message */
meson_ao_cec_write(ao_cec, CEC_RX_MSG_CMD, RX_ACK_CURRENT, &ret);
meson_ao_cec_write(ao_cec, CEC_RX_MSG_CMD, RX_NO_OP, &ret);
/* Clear RX buffer */
meson_ao_cec_write(ao_cec, CEC_RX_CLEAR_BUF, CLEAR_START, &ret);
meson_ao_cec_write(ao_cec, CEC_RX_CLEAR_BUF, CLEAR_STOP, &ret);
}
static irqreturn_t tegra_cec_irq_thread_handler(int irq, void *data)
{
struct device *dev = data;
struct tegra_cec *cec = dev_get_drvdata(dev);
if (cec->tx_done) {
cec_transmit_attempt_done(cec->adap, cec->tx_status);
cec->tx_done = false;
}
if (cec->rx_done) {
struct cec_msg msg = {};
msg.len = cec->rx_buf_cnt;
memcpy(msg.msg, cec->rx_buf, msg.len);
cec_received_msg(cec->adap, &msg);
cec->rx_done = false;
cec->rx_buf_cnt = 0;
}
return IRQ_HANDLED;
}
static void rain_process_msg(struct rain *rain)
{
struct cec_msg msg = {};
const char *cmd = rain->cmd + 3;
int stat = -1;
for (; *cmd; cmd++) {
if (!isxdigit(*cmd))
continue;
if (isxdigit(cmd[0]) && isxdigit(cmd[1])) {
if (msg.len == CEC_MAX_MSG_SIZE)
break;
if (hex2bin(msg.msg + msg.len, cmd, 1))
continue;
msg.len++;
cmd++;
continue;
}
if (!cmd[1])
stat = hex_to_bin(cmd[0]);
break;
}
if (rain->cmd[0] == 'R') {
if (stat == 1 || stat == 2)
cec_received_msg(rain->adap, &msg);
return;
}
switch (stat) {
case 1:
cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_OK);
break;
case 2:
cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_NACK);
break;
default:
cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_LOW_DRIVE);
break;
}
}
static int drm_dp_cec_received(struct drm_dp_aux *aux)
{
struct cec_adapter *adap = aux->cec.adap;
struct cec_msg msg;
u8 rx_msg_info;
ssize_t err;
err = drm_dp_dpcd_readb(aux, DP_CEC_RX_MESSAGE_INFO, &rx_msg_info);
if (err < 0)
return err;
if (!(rx_msg_info & DP_CEC_RX_MESSAGE_ENDED))
return 0;
msg.len = (rx_msg_info & DP_CEC_RX_MESSAGE_LEN_MASK) + 1;
err = drm_dp_dpcd_read(aux, DP_CEC_RX_MESSAGE_BUFFER, msg.msg, msg.len);
if (err < 0)
return err;
cec_received_msg(adap, &msg);
return 0;
}
static void stih_rx_done(struct stih_cec *cec, u32 status)
{
struct cec_msg msg = {};
u8 i;
if (status & CEC_RX_ERROR_MIN)
return;
if (status & CEC_RX_ERROR_MAX)
return;
msg.len = readl(cec->regs + CEC_DATA_ARRAY_STATUS) & 0x1f;
if (!msg.len)
return;
if (msg.len > 16)
msg.len = 16;
for (i = 0; i < msg.len; i++)
msg.msg[i] = readl(cec->regs + CEC_RX_DATA_BASE + i);
cec_received_msg(cec->adap, &msg);
}
