diff options
Diffstat (limited to 'drivers/media/dvb/dvb-usb/dib0700_core.c')
| -rw-r--r-- | drivers/media/dvb/dvb-usb/dib0700_core.c | 197 |
1 files changed, 196 insertions, 1 deletions
diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c index 0d3c9a9a33b..4f961d2d181 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_core.c +++ b/drivers/media/dvb/dvb-usb/dib0700_core.c @@ -471,14 +471,209 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) return dib0700_ctrl_wr(adap->dev, b, 4); } +/* Number of keypresses to ignore before start repeating */ +#define RC_REPEAT_DELAY_V1_20 10 + +/* This is the structure of the RC response packet starting in firmware 1.20 */ +struct dib0700_rc_response { + u8 report_id; + u8 data_state; + u16 system; + u8 data; + u8 not_data; +}; +#define RC_MSG_SIZE_V1_20 6 + +static void dib0700_rc_urb_completion(struct urb *purb) +{ + struct dvb_usb_device *d = purb->context; + struct dvb_usb_rc_key *keymap; + struct dib0700_state *st; + struct dib0700_rc_response poll_reply; + u8 *buf; + int found = 0; + u32 event; + int state; + int i; + + deb_info("%s()\n", __func__); + if (d == NULL) + return; + + if (d->rc_input_dev == NULL) { + /* This will occur if disable_rc_polling=1 */ + usb_free_urb(purb); + return; + } + + keymap = d->props.rc_key_map; + st = d->priv; + buf = (u8 *)purb->transfer_buffer; + + if (purb->status < 0) { + deb_info("discontinuing polling\n"); + usb_free_urb(purb); + return; + } + + if (purb->actual_length != RC_MSG_SIZE_V1_20) { + deb_info("malformed rc msg size=%d\n", purb->actual_length); + goto resubmit; + } + + /* Set initial results in case we exit the function early */ + event = 0; + state = REMOTE_NO_KEY_PRESSED; + + deb_data("IR raw %02X %02X %02X %02X %02X %02X (len %d)\n", buf[0], + buf[1], buf[2], buf[3], buf[4], buf[5], purb->actual_length); + + switch (dvb_usb_dib0700_ir_proto) { + case 0: + /* NEC Protocol */ + poll_reply.report_id = 0; + poll_reply.data_state = 1; + poll_reply.system = buf[2]; + poll_reply.data = buf[4]; + poll_reply.not_data = buf[5]; + + /* NEC protocol sends repeat code as 0 0 0 FF */ + if ((poll_reply.system == 0x00) && (poll_reply.data == 0x00) + && (poll_reply.not_data == 0xff)) { + poll_reply.data_state = 2; + break; + } + break; + default: + /* RC5 Protocol */ + poll_reply.report_id = buf[0]; + poll_reply.data_state = buf[1]; + poll_reply.system = (buf[2] << 8) | buf[3]; + poll_reply.data = buf[4]; + poll_reply.not_data = buf[5]; + break; + } + + if ((poll_reply.data + poll_reply.not_data) != 0xff) { + /* Key failed integrity check */ + err("key failed integrity check: %04x %02x %02x", + poll_reply.system, + poll_reply.data, poll_reply.not_data); + goto resubmit; + } + + deb_data("rid=%02x ds=%02x sm=%04x d=%02x nd=%02x\n", + poll_reply.report_id, poll_reply.data_state, + poll_reply.system, poll_reply.data, poll_reply.not_data); + + /* Find the key in the map */ + for (i = 0; i < d->props.rc_key_map_size; i++) { + if (rc5_custom(&keymap[i]) == (poll_reply.system & 0xff) && + rc5_data(&keymap[i]) == poll_reply.data) { + event = keymap[i].event; + found = 1; + break; + } + } + + if (found == 0) { + err("Unknown remote controller key: %04x %02x %02x", + poll_reply.system, poll_reply.data, poll_reply.not_data); + d->last_event = 0; + goto resubmit; + } + + if (poll_reply.data_state == 1) { + /* New key hit */ + st->rc_counter = 0; + event = keymap[i].event; + state = REMOTE_KEY_PRESSED; + d->last_event = keymap[i].event; + } else if (poll_reply.data_state == 2) { + /* Key repeated */ + st->rc_counter++; + + /* prevents unwanted double hits */ + if (st->rc_counter > RC_REPEAT_DELAY_V1_20) { + event = d->last_event; + state = REMOTE_KEY_PRESSED; + st->rc_counter = RC_REPEAT_DELAY_V1_20; + } + } else { + err("Unknown data state [%d]", poll_reply.data_state); + } + + switch (state) { + case REMOTE_NO_KEY_PRESSED: + break; + case REMOTE_KEY_PRESSED: + deb_info("key pressed\n"); + d->last_event = event; + case REMOTE_KEY_REPEAT: + deb_info("key repeated\n"); + input_event(d->rc_input_dev, EV_KEY, event, 1); + input_sync(d->rc_input_dev); + input_event(d->rc_input_dev, EV_KEY, d->last_event, 0); + input_sync(d->rc_input_dev); + break; + default: + break; + } + +resubmit: + /* Clean the buffer before we requeue */ + memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20); + + /* Requeue URB */ + usb_submit_urb(purb, GFP_ATOMIC); +} + int dib0700_rc_setup(struct dvb_usb_device *d) { + struct dib0700_state *st = d->priv; u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0}; - int i = dib0700_ctrl_wr(d, rc_setup, 3); + struct urb *purb; + int ret; + int i; + + if (d->props.rc_key_map == NULL) + return 0; + + /* Set the IR mode */ + i = dib0700_ctrl_wr(d, rc_setup, 3); if (i<0) { err("ir protocol setup failed"); return -1; } + + if (st->fw_version < 0x10200) + return 0; + + /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */ + purb = usb_alloc_urb(0, GFP_KERNEL); + if (purb == NULL) { + err("rc usb alloc urb failed\n"); + return -1; + } + + purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL); + if (purb->transfer_buffer == NULL) { + err("rc kzalloc failed\n"); + usb_free_urb(purb); + return -1; + } + + purb->status = -EINPROGRESS; + usb_fill_bulk_urb(purb, d->udev, usb_rcvbulkpipe(d->udev, 1), + purb->transfer_buffer, RC_MSG_SIZE_V1_20, + dib0700_rc_urb_completion, d); + + ret = usb_submit_urb(purb, GFP_ATOMIC); + if (ret != 0) { + err("rc submit urb failed\n"); + return -1; + } + return 0; } |