diff options
| author | Malcolm Priestley | 2014-05-24 11:35:57 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2014-06-17 17:04:47 +0200 |
| commit | 3a370222b0c514360863ec79c1481dffbbf1ddab (patch) | |
| tree | f2315765635caa6362d0c6430e7ed0d4254046a9 /drivers | |
| parent | [media] m2m-deinterlace: Convert to devm* API (diff) | |
| download | kernel-qcow2-linux-3a370222b0c514360863ec79c1481dffbbf1ddab.tar.gz kernel-qcow2-linux-3a370222b0c514360863ec79c1481dffbbf1ddab.tar.xz kernel-qcow2-linux-3a370222b0c514360863ec79c1481dffbbf1ddab.zip | |
[media] lmedm04: rs2000 check if interrupt urb is over due
Change handling of signal_lock on rs2000. Use ibuf[2] to detect
lock as there is a longer wait for lock to appear in ibuf[6].
Remove last_key and key_timeout and use jiffies plus 60ms
to detect that streaming is still active.
If the current jiffies is time_after the interrupt urb overdue and
clear signal lock.
This results in far faster recovery of lock and streaming.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/lmedm04.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c b/drivers/media/usb/dvb-usb-v2/lmedm04.c index f674dc024d06..7d685bc8c2c0 100644 --- a/drivers/media/usb/dvb-usb-v2/lmedm04.c +++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c @@ -125,14 +125,13 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); #define TUNER_RS2000 0x4 struct lme2510_state { + unsigned long int_urb_due; u8 id; u8 tuner_config; u8 signal_lock; u8 signal_level; u8 signal_sn; u8 time_key; - u8 last_key; - u8 key_timeout; u8 i2c_talk_onoff; u8 i2c_gate; u8 i2c_tuner_gate_w; @@ -323,7 +322,7 @@ static void lme2510_int_response(struct urb *lme_urb) } break; case TUNER_RS2000: - if (ibuf[1] == 0x3 && ibuf[6] == 0xff) + if (ibuf[2] & 0x1) st->signal_lock = 0xff; else st->signal_lock = 0x00; @@ -343,7 +342,12 @@ static void lme2510_int_response(struct urb *lme_urb) break; } } + usb_submit_urb(lme_urb, GFP_ATOMIC); + + /* interrupt urb is due every 48 msecs while streaming + * add 12msecs for system lag */ + st->int_urb_due = jiffies + msecs_to_jiffies(60); } static int lme2510_int_read(struct dvb_usb_adapter *adap) @@ -584,14 +588,13 @@ static int lme2510_msg(struct dvb_usb_device *d, switch (wbuf[3]) { case 0x8c: rbuf[0] = 0x55; - rbuf[1] = 0xff; - if (st->last_key == st->time_key) { - st->key_timeout++; - if (st->key_timeout > 5) - rbuf[1] = 0; - } else - st->key_timeout = 0; - st->last_key = st->time_key; + rbuf[1] = st->signal_lock; + + /* If int_urb_due overdue + * set rbuf[1] to 0 to clear lock */ + if (time_after(jiffies, st->int_urb_due)) + rbuf[1] = 0; + break; default: lme2510_usb_talk(d, wbuf, wlen, rbuf, rlen); |