From: Clemens Ladisch <clemens@ladisch.de>
To: Huacai Chen <chenhuacai@gmail.com>
Cc: linux-mips@linux-mips.org, alsa-devel@alsa-project.org,
Zhangjin Wu <wuzhangjin@gmail.com>, Hua Yan <yanh@lemote.com>,
Ralf Baechle <ralf@linux-mips.org>,
Fuxin Zhang <zhangfx@lemote.com>, Huacai Chen <chenhc@lemote.com>,
Hongliang Tao <taohl@lemote.com>
Subject: Re: [PATCH V2 13/16] ALSA: HDA: Make hda sound card usable for Loongson.
Date: Tue, 19 Jun 2012 11:09:41 +0200 [thread overview]
Message-ID: <4FE041D5.8030002@ladisch.de> (raw)
In-Reply-To: <1340088624-25550-14-git-send-email-chenhc@lemote.com>
Huacai Chen wrote:
> 1, Use 32-bit DMA as a workaround (Loongson has a hardware bug that it
> doesn't support DMA address above 4GB).
> 2, Modify patch_conexant.c to add Lemote specific code.
Please create separate patches for these two changes.
> +++ b/include/linux/pci_ids.h
> @@ -2906,3 +2906,5 @@
> #define PCI_DEVICE_ID_XEN_PLATFORM 0x0001
>
> #define PCI_VENDOR_ID_OCZ 0x1b85
> +
> +#define PCI_VENDOR_ID_LEMOTE 0x1c06
AFAICS this symbol is not used in this patch.
> +#ifdef CONFIG_CPU_LOONGSON3
> + /* Workaround: Loongson 3 doesn't support 64-bit DMA */
> + gcap &= ~ICH6_GCAP_64OK;
> +#endif
/* Workaround: Loongson 3 doesn't actually support 64-bit DMA */
Regards,
Clemens
next prev parent reply other threads:[~2012-06-19 9:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1340088624-25550-1-git-send-email-chenhc@lemote.com>
2012-06-19 6:50 ` [PATCH V2 13/16] ALSA: HDA: Make hda sound card usable for Loongson Huacai Chen
2012-06-19 9:09 ` Clemens Ladisch [this message]
2012-06-19 9:26 ` [alsa-devel] " Takashi Iwai
2012-06-19 10:47 ` Huacai Chen
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