dw_dmac: repair driver for use with AVR32 (AP7000)
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b4 am [email protected]Versions newest first · linked by author and title
- v4 Latest3 patches 7 repliesIn review
- v33 patches 0 repliesSuperseded
- v2 posting 2/22 patches 4 repliesSuperseded
Earlier versions · 2
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v2 posting 1/2 | 2 patches | 0 replies | Superseded | |
| v1 | 2 patches | 13 replies | Superseded |
Patches in v4 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | dw_dmac: make driver endianness configurabledrivers/ drivers/ | +25 | 0 replies | |
| 2/3 | dw_dmac: max_mem_width limits value for SRC/DST_TR_WID registerdrivers/ include/ | +10 | 6 replies | |
| 3/3 | avr32: at32ap700x: set DMA slave properties for MCI dw_dmacarch/ | +4 | 1 reply |
Reviews trailers per patch
All 3 patches have a Reviewed-by or Acked-by.
| Patch | Viresh Kumar | Arnd Bergmann | Hans-Christian Egtvedt |
|---|---|---|---|
| 1/3 | A-b | A-b | R-b |
| 2/3 | A-b | ||
| 3/3 | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 3 reviewers.
Cover letter [PATCH v4 0/3] dw_dmac: repair driver for use with AVR32 (AP7000)
v3 was based and tested on 3.5.2. the patches didn't apply to the latest kernel because dw_dmac.c has had some changes since then. Now it is based and tested on linux-3.6-rc4
From: Hein Tibosch <[email protected]>
v4: now based and tested on 3.6-rc4
After some recent changes to dw_dmac, the driver got broken for the AVR32 platform for several reasons:
The accessors to i/o memory had become little-endian.
The maximum transfer width on the memory side was increased from 32 to 64 bits. This led to undefined behavior on the avr32 platform.
These patches will repair the driver so it can be used again on avr32. For other users of dw_dmac (ARM platform), nothing will change and no code has to be adapted.
The small patch for Atmel (at32ap700x.c) is included here because of its dependency on the second dw_dmac patch.
Thanks to all for reviewing, both people from Atmel and Linaro
Hein Tibosch (3):
dw_dmac: make driver endianness configurable
dw_dmac: max_mem_width limits value for SRC/DST_TR_WID register
avr32: at32ap700x: set DMA slave properties for MCI dw_dmac
arch/avr32/mach-at32ap/at32ap700x.c | 4 ++++ drivers/dma/Kconfig | 11 +++++++++++ drivers/dma/dw_dmac.c | 13 +++++++------ drivers/dma/dw_dmac_regs.h | 14 ++++++++++++++ include/linux/dw_dmac.h | 3 +++ 5 files changed, 39 insertions(+), 6 deletions(-)