diff options
| author | Andreas Eversberg <andreas@eversberg.eu> | 2008-09-28 13:01:01 +0200 |
|---|---|---|
| committer | Karsten Keil <kkeil@suse.de> | 2009-01-09 22:44:28 +0100 |
| commit | 87c5fa1bb42624254a2013cbbc3b170d6017f5d6 (patch) | |
| tree | 49772208b9e511d233e6b715b44fb4062fe1760f /drivers/isdn/mISDN/dsp_cmx.c | |
| parent | mISDN: Minor fixes (diff) | |
| download | linux-87c5fa1bb42624254a2013cbbc3b170d6017f5d6.tar.xz linux-87c5fa1bb42624254a2013cbbc3b170d6017f5d6.zip | |
mISDN: Add different different timer settings for hfc-pci
- Poll-timer can now be set from 8 to 256 samples, depending on your kernel.
- If default or 128 is used, the normal controller's clock is used as before.
Usage: modprobe hfcpci poll=XXX
- Added some debug code for dsp buffer size. (CMX_DELAY_DEBUG)
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Diffstat (limited to 'drivers/isdn/mISDN/dsp_cmx.c')
| -rw-r--r-- | drivers/isdn/mISDN/dsp_cmx.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c index efe4c7430e6d..02f643456b16 100644 --- a/drivers/isdn/mISDN/dsp_cmx.c +++ b/drivers/isdn/mISDN/dsp_cmx.c @@ -137,6 +137,7 @@ /* #define CMX_CONF_DEBUG */ /*#define CMX_DEBUG * massive read/write pointer output */ +/*#define CMX_DELAY_DEBUG * gives rx-buffer delay overview */ /*#define CMX_TX_DEBUG * massive read/write on tx-buffer with content */ static inline int @@ -1135,6 +1136,25 @@ dsp_cmx_conf(struct dsp *dsp, u32 conf_id) return 0; } +#ifdef CMX_DELAY_DEBUG +int delaycount; +static void +showdelay(struct dsp *dsp, int samples, int delay) +{ + char bar[] = "--------------------------------------------------|"; + int sdelay; + + delaycount += samples; + if (delaycount < 8000) + return; + delaycount = 0; + + sdelay = delay * 50 / (dsp_poll << 2); + + printk(KERN_DEBUG "DELAY (%s) %3d >%s\n", dsp->name, delay, + sdelay > 50 ? "..." : bar + 50 - sdelay); +} +#endif /* * audio data is received from card @@ -1256,6 +1276,9 @@ dsp_cmx_receive(struct dsp *dsp, struct sk_buff *skb) /* increase write-pointer */ dsp->rx_W = ((dsp->rx_W+len) & CMX_BUFF_MASK); +#ifdef CMX_DELAY_DEBUG + showdelay(dsp, len, (dsp->rx_W-dsp->rx_R) & CMX_BUFF_MASK); +#endif } |