static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
unsigned count)
{
struct redrat3_dev *rr3 = rcdev->priv;
struct device *dev = rr3->dev;
struct redrat3_signal_header header;
int i, j, ret, ret_len, offset;
int lencheck, cur_sample_len, pipe;
char *buffer = NULL, *sigdata = NULL;
int *sample_lens = NULL;
u32 tmpi;
u16 tmps;
u8 *datap;
u8 curlencheck = 0;
u16 *lengths_ptr;
int sendbuf_len;
rr3_ftr(dev, "Entering %s\n", __func__);
if (rr3->transmitting) {
dev_warn(dev, "%s: transmitter already in use\n", __func__);
return -EAGAIN;
}
if (count > (RR3_DRIVER_MAXLENS * 2))
return -EINVAL;
/* */
rr3->det_enabled = false;
rr3->transmitting = true;
sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
if (!sample_lens) {
ret = -ENOMEM;
goto out;
}
for (i = 0; i < count; i++) {
for (lencheck = 0; lencheck < curlencheck; lencheck++) {
cur_sample_len = redrat3_us_to_len(txbuf[i]);
if (sample_lens[lencheck] == cur_sample_len)
break;
}
if (lencheck == curlencheck) {
cur_sample_len = redrat3_us_to_len(txbuf[i]);
rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
i, txbuf[i], curlencheck, cur_sample_len);
if (curlencheck < 255) {
/*
*/
sample_lens[curlencheck] = cur_sample_len;
curlencheck++;
} else {
dev_err(dev, "signal too long\n");
ret = -EINVAL;
goto out;
}
}
}
sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL);
if (!sigdata) {
ret = -ENOMEM;
goto out;
}
sigdata[count] = RR3_END_OF_SIGNAL;
sigdata[count + 1] = RR3_END_OF_SIGNAL;
for (i = 0; i < count; i++) {
for (j = 0; j < curlencheck; j++) {
if (sample_lens[j] == redrat3_us_to_len(txbuf[i]))
sigdata[i] = j;
}
}
offset = RR3_TX_HEADER_OFFSET;
sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS)
+ count + RR3_TX_TRAILER_LEN + offset;
buffer = kzalloc(sendbuf_len, GFP_KERNEL);
if (!buffer) {
ret = -ENOMEM;
goto out;
}
/* */
header.length = sendbuf_len - offset;
header.transfer_type = RR3_MOD_SIGNAL_OUT;
header.pause = redrat3_len_to_us(100);
header.mod_freq_count = mod_freq_to_val(rr3->carrier);
header.no_periods = 0; /* */
header.max_lengths = RR3_DRIVER_MAXLENS;
header.no_lengths = curlencheck;
header.max_sig_size = RR3_MAX_SIG_SIZE;
header.sig_size = count + RR3_TX_TRAILER_LEN;
/* */
header.no_repeats = 0;
tmps = cpu_to_be16(header.length);
memcpy(buffer, &tmps, 2);
tmps = cpu_to_be16(header.transfer_type);
memcpy(buffer + 2, &tmps, 2);
tmpi = cpu_to_be32(header.pause);
memcpy(buffer + offset, &tmpi, sizeof(tmpi));
tmps = cpu_to_be16(header.mod_freq_count);
memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2);
buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths;
tmps = cpu_to_be16(header.sig_size);
memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2);
buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats;
lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH);
for (i = 0; i < curlencheck; ++i)
lengths_ptr[i] = cpu_to_be16(sample_lens[i]);
datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH +
(sizeof(u16) * RR3_DRIVER_MAXLENS));
memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN));
if (debug) {
redrat3_dump_signal_header(&header);
redrat3_dump_signal_data(buffer, header.sig_size);
}
pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
tmps = usb_bulk_msg(rr3->udev, pipe, buffer,
sendbuf_len, &ret_len, 10 * HZ);
rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps);
/* */
pipe = usb_rcvctrlpipe(rr3->udev, 0);
ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0, 0, buffer, 2, HZ * 10);
if (ret < 0)
dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
else
ret = count;
out:
kfree(sample_lens);
kfree(buffer);
kfree(sigdata);
rr3->transmitting = false;
/* */
rr3->det_enabled = true;
return ret;
}
static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
unsigned count)
{
struct redrat3_dev *rr3 = rcdev->priv;
struct device *dev = rr3->dev;
struct redrat3_irdata *irdata = NULL;
int ret, ret_len;
int lencheck, cur_sample_len, pipe;
int *sample_lens = NULL;
u8 curlencheck = 0;
unsigned i, sendbuf_len;
rr3_ftr(dev, "Entering %s\n", __func__);
if (rr3->transmitting) {
dev_warn(dev, "%s: transmitter already in use\n", __func__);
return -EAGAIN;
}
if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN)
return -EINVAL;
/* rr3 will disable rc detector on transmit */
rr3->transmitting = true;
sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
if (!sample_lens) {
ret = -ENOMEM;
goto out;
}
irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
if (!irdata) {
ret = -ENOMEM;
goto out;
}
for (i = 0; i < count; i++) {
cur_sample_len = redrat3_us_to_len(txbuf[i]);
if (cur_sample_len > 0xffff) {
dev_warn(dev, "transmit period of %uus truncated to %uus\n",
txbuf[i], redrat3_len_to_us(0xffff));
cur_sample_len = 0xffff;
}
for (lencheck = 0; lencheck < curlencheck; lencheck++) {
if (sample_lens[lencheck] == cur_sample_len)
break;
}
if (lencheck == curlencheck) {
rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
i, txbuf[i], curlencheck, cur_sample_len);
if (curlencheck < RR3_DRIVER_MAXLENS) {
/* now convert the value to a proper
* rr3 value.. */
sample_lens[curlencheck] = cur_sample_len;
put_unaligned_be16(cur_sample_len,
&irdata->lens[curlencheck]);
curlencheck++;
} else {
ret = -EINVAL;
goto out;
}
}
irdata->sigdata[i] = lencheck;
}
irdata->sigdata[count] = RR3_END_OF_SIGNAL;
irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;
sendbuf_len = offsetof(struct redrat3_irdata,
sigdata[count + RR3_TX_TRAILER_LEN]);
/* fill in our packet header */
irdata->header.length = cpu_to_be16(sendbuf_len -
sizeof(struct redrat3_header));
irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);
irdata->pause = cpu_to_be32(redrat3_len_to_us(100));
irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));
irdata->no_lengths = curlencheck;
irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);
pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
ret = usb_bulk_msg(rr3->udev, pipe, irdata,
sendbuf_len, &ret_len, 10 * HZ);
rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
/* now tell the hardware to transmit what we sent it */
pipe = usb_rcvctrlpipe(rr3->udev, 0);
ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0, 0, irdata, 2, HZ * 10);
if (ret < 0)
dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
else
ret = count;
out:
kfree(sample_lens);
kfree(irdata);
rr3->transmitting = false;
/* rr3 re-enables rc detector because it was enabled before */
return ret;
}