linux-kernel - Re: [PATCH v4] fbdev: sh_mobile_lcdc: use dma_mmap

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Date:	Mon, 10 Dec 2012 23:54:45 +0100
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Hideki EIRAKU <hdk@...l.co.jp>
Cc:	FlorianSchandinat@....de, linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, m.szyprowski@...sung.com,
	matsu@...l.co.jp, dhobsong@...l.co.jp
Subject: Re: [PATCH v4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent

Hi Eiraku-san,

On Monday 10 December 2012 19:31:25 Hideki EIRAKU wrote:
> On Thu, 16 Aug 2012 14:16:32 +0200 Laurent Pinchart wrote:
> > 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@...l.co.jp>
> > 
> > Acked-by: Laurent Pinchart <laurent.pinchart@...asonboard.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?

I'm afraid the patch got delayed to v3.8, sorry about that. I've sent a pull 
request for v3.8, the patch is currently in linux-next 
(bf10a53765b4435a5349a92a5a51753902ed86f1) and will be merged during the next 
merge window (which should open in the very near future).

-- 
Regards,

Laurent Pinchart

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