Date: Fri, 12 Apr 2002 07:49:44 -0700 From: orion@freebsd.org To: Colin Perkins <csp@isi.edu> Cc: freebsd-multimedia@freebsd.org Subject: Re: Sound on ThinkPad X22 Message-ID: <200204121449.g3CEniv05936@puma.icir.org> In-Reply-To: Your message of "Fri, 12 Apr 2002 00:05:21 EDT." <200204120405.g3C45L59000480@purple.nge.isi.edu>
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Thank you for sharing - good news that you got this working. Moving over to the dark side, eh ;-) I'll chase up the existing pr's and re-examine the ac97 attach code. ALSA seems to do much better in terms of the delays during the AC97 attach and fbsd should be comparable. Cheers - Orion /-- Colin Perkins wrote: | Hi, | | I've been fighting to get audio working on my ThinkPad X22, running | 4.5-STABLE. Seems I finally have success, and I wanted to share the | information with the list for the record. | | Stock 4.5-STABLE detects the soundcard, but can't map the IO port | space. The dmesg shows: | | pcm0: <Intel 82801CA (ICH3)> irq 5 at device 31.5 on pci0 | pcm0: unable to map IO port space | device_probe_and_attach: pcm0 attach returned 6 | | Applying the patches from PR kern/36716 and i386/36972 and recompiling with | the PCI_ENABLE_IO_MODES option in the kernel config results in: | | pcm0: <Intel 82801CA (ICH3)> port 0x18c0-0x18ff,0x1c00-0x1cff irq 5 at de | vice 31.5 on pci0 | pcm0: ac97 codec reports dac not ready | pcm0: measured ac97 link rate at 44201 Hz | | and non-functional sound. However, this can be fixed by increasing the | delay in sys/dev/sound/pcm/ac97.c as follows: | | *** ac97.c.orig Thu Apr 11 14:29:49 2002 | --- ac97.c Thu Apr 11 23:30:54 2002 | *************** | *** 367,373 **** | | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | wrcd(codec, AC97_REG_RESET, 0); | ! DELAY(100000); | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | | i = rdcd(codec, AC97_REG_RESET); | --- 367,373 ---- | | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | wrcd(codec, AC97_REG_RESET, 0); | ! DELAY(400000); | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | | i = rdcd(codec, AC97_REG_RESET); | *************** | *** 462,468 **** | | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | wrcd(codec, AC97_REG_RESET, 0); | ! DELAY(100000); | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | i = rdcd(codec, AC97_REG_RESET); | | --- 462,468 ---- | | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | wrcd(codec, AC97_REG_RESET, 0); | ! DELAY(400000); | wrcd(codec, AC97_REG_POWER, (codec->flags & AC97_F_EAPD_INV)? 0x8000 | : 0x0000); | i = rdcd(codec, AC97_REG_RESET); | | and dmesg now shows: | | pcm0: <Intel 82801CA (ICH3)> port 0x18c0-0x18ff,0x1c00-0x1cff irq 5 at de | vice 31.5 on pci0 | | Question for the list: is this increase in the delay parameter likely to | cause problems with other devices? If not, can someone consider committing | the necessary changes? | | Cheers, | Colin | | To Unsubscribe: send mail to majordomo@FreeBSD.org | with "unsubscribe freebsd-multimedia" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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