Hello!
Flash plugin version 5 refuses to work with the VIA 82Cxxx driver. It
turns out that Flash uses SNDCTL_DSP_NONBLOCK on /dev/dsp, which is not
supported by the driver.
I also looked what other ioctls can be implemented easily on VIA 82Cxxx.
There is another one - SNDCTL_DSP_GETTRIGGER. Everything else is not
trivial, sorry.
This patch add support for SNDCTL_DSP_NONBLOCK and SNDCTL_DSP_GETTRIGGER.
It can be found at http://www.red-bean.com/~proski/linux/via-ioctl.diff
Flash 5 plugin plays just fine after applying the patch (check e.g.
http://wcrb.com/sparks.html)
The patch is against 2.4.13-ac2.
----------------------------------------
--- linux.orig/drivers/sound/via82cxxx_audio.c
+++ linux/drivers/sound/via82cxxx_audio.c
@@ -2800,6 +2800,11 @@ static int via_dsp_ioctl (struct inode *
rc = 0;
break;
+ case SNDCTL_DSP_NONBLOCK:
+ file->f_flags |= O_NONBLOCK;
+ rc = 0;
+ break;
+
/* obtain bitmask of device capabilities, such as mmap, full duplex, etc. */
case SNDCTL_DSP_GETCAPS:
DPRINTK ("DSP_GETCAPS\n");
@@ -2898,6 +2903,15 @@ static int via_dsp_ioctl (struct inode *
if (!rc && wr)
rc = via_dsp_ioctl_trigger (&card->ch_out, val);
+ break;
+
+ case SNDCTL_DSP_GETTRIGGER:
+ val = 0;
+ if ((file->f_mode & FMODE_READ) && card->ch_in.is_enabled)
+ val |= PCM_ENABLE_INPUT;
+ if ((file->f_mode & FMODE_WRITE) && card->ch_out.is_enabled)
+ val |= PCM_ENABLE_OUTPUT;
+ rc = put_user(val, (int *)arg);
break;
/* Enable full duplex. Since we do this as soon as we are opened
----------------------------------------
Thanks for applying my previous patches.
P.S. Loading and unloading the driver with CONFIG_SOUND_VIA82CXXX_PROCFS
enabled blocks something in the kernel (no new process can be run). The
kernel prints:
de_put: deferred delete of 0
de_put: deferred delete of via
Just be aware that it can happen and that it's not related to my ioctl
patch. If I fix it, I'll post a separate patch.
-- Regards, Pavel Roskin- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Oct 31 2001 - 21:00:32 EST