Thread (7 messages) 7 messages, 3 authors, 2012-07-30
STALE5102d
Revisions (3)
  1. v1 [diff vs current]
  2. v2 current
  3. v3 [diff vs current]

[PATCH v2 0/4] Use dma_mmap_coherent to support IOMMU mapper

From: Hideki EIRAKU <hidden>
Date: 2012-07-26 11:13:40
Also in: alsa-devel, linux-arm-kernel, linux-media, lkml

There is a dma_mmap_coherent() API in some architectures.  This API
provides a mmap function for memory allocated by dma_alloc_coherent().
Some drivers mmap a dma_addr_t returned by dma_alloc_coherent() as a
physical address.  But such drivers do not work correctly when IOMMU
mapper is used.

v2:
- Rebase on fbdev-next branch of
  git://github.com/schandinat/linux-2.6.git.
- Initialize .fb_mmap in both sh_mobile_lcdc_overlay_ops and
  sh_mobile_lcdc_ops.
- Add Laurent's clean up patch.

Hideki EIRAKU (3):
  ARM: dma-mapping: define ARCH_HAS_DMA_MMAP_COHERENT
  media: videobuf2-dma-contig: use dma_mmap_coherent if available
  fbdev: sh_mobile_lcdc: use dma_mmap_coherent if available

Laurent Pinchart (1):
  ALSA: pcm - Don't define ARCH_HAS_DMA_MMAP_COHERENT privately for ARM

 arch/arm/include/asm/dma-mapping.h         |    1 +
 drivers/media/video/videobuf2-dma-contig.c |   18 ++++++++++++++++++
 drivers/video/sh_mobile_lcdcfb.c           |   28 ++++++++++++++++++++++++++++
 sound/core/pcm_native.c                    |    7 -------
 4 files changed, 47 insertions(+), 7 deletions(-)
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