From: Hideki EIRAKU <hdk@igel.co.jp>
To: laurent.pinchart@ideasonboard.com
Cc: FlorianSchandinat@gmx.de, linux-fbdev@vger.kernel.org,
linux-kernel@vger.kernel.org, m.szyprowski@samsung.com,
matsu@igel.co.jp, dhobsong@igel.co.jp
Subject: Re: [PATCH v4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent
Date: Mon, 10 Dec 2012 19:31:25 +0900 (JST) [thread overview]
Message-ID: <20121210.193125.442743545.hdk@igel.co.jp> (raw)
In-Reply-To: <14014166.3JMiBq7jRA@avalon>
Hi Laurent,
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: Re: [PATCH v4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent
Date: Thu, 16 Aug 2012 14:16:32 +0200
> Hi Eiraku-san,
>
> On Thursday 16 August 2012 19:13:20 Hideki EIRAKU wrote:
>> fb_mmap() implemented in fbmem.c uses smem_start as the physical
>> address of the frame buffer. In the sh_mobile_lcdc driver, the
>> smem_start is a dma_addr_t that is not a physical address when IOMMU is
>> enabled. dma_mmap_coherent() maps the address correctly.
>>
>> Signed-off-by: Hideki EIRAKU <hdk@igel.co.jp>
>
> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> I will push the patch to v3.7 through my tree.
I'd like to use this patch to test IOMMU implementation of Renesas
IPMMU. But I could not find it in v3.7-rc8. Could you please tell me if
this has already been merged somewhere or not?
--
Hideki EIRAKU <hdk@igel.co.jp>
next prev parent reply other threads:[~2012-12-10 10:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-16 10:13 [PATCH v4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent Hideki EIRAKU
2012-08-16 12:16 ` Laurent Pinchart
2012-12-10 10:31 ` Hideki EIRAKU [this message]
2012-12-10 22:54 ` Laurent Pinchart
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