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path: root/drivers/dma/ste_dma40_ll.c
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2013-01-14dmaengine: ste_dma40: minor cosmetic fixesFabio Baltieri
This patch contains various non functional cosmetic fixes. Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
2013-01-14dmaengine: ste_dma40: use writel_relaxed for lcxaPer Forlin
lcpa and lcla are written often and the cache_sync() overhead in writel is costly, especially for wlan where every single network packet (in RX mode) corresponds to a separate DMA transfer. Signed-off-by: Per Forlin <per.forlin@stericsson.com> Reviewed-by: Narayanan Gopalakrishnan <narayanan.gopalakrishnan@stericsson.com> Reviewed-by: Rabin Vincent <rabin.vincent@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
2013-01-14dmaengine: ste_dma40: reset priority bit for logical channelsNarayanan
This patch sets the SSCFG/SDCFG bit[7] PRI only for physical channel requests with high priority. For logical channels, this bit will be zero. Signed-off-by: Narayanan G <narayanan.gopalakrishnan@stericsson.com> Reviewed-by: Rabin Vincent <rabin.vincent@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
2012-11-05ARM: plat-nomadik: move DMA40 header to <linux/platform_data>Linus Walleij
This moves the DMA40 platform data header from <plat/ste_dma40.h> to <linux/platform_data/dma-ste-dma40.h> where is belongs. Cc: Dan Williams <djbw@fb.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Ola Lilja <ola.o.lilja@stericsson.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Andreas Westin <andreas.westin@stericsson.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-01-31dma40: cyclic xfer supportRabin Vincent
Support cyclic transfers, which are useful for ALSA drivers. Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: use flags to reduce parameter countRabin Vincent
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: make d40_log_buf_to_lli staticRabin Vincent
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: pass the info pointer all the way to reduce argument countRabin Vincent
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: unify d40_log_sg_to_lli funcs for mem and slaveRabin Vincent
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: combine duplicated code in log_sg_to_devRabin Vincent
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: move lli_load to main source fileRabin Vincent
These register writes are better placed in the main source file rather than ll.c. Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: implement prep_memcpy as a wrapper around memcpy_sgRabin Vincent
To simplify the code. Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-31dma40: use sg_dma_address() instead of sg_phys()Rabin Vincent
The address to use for DMA should be taken from sg_dma_address() and not sg_phys(). Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-01-05dmaengine: dma40: Add support to split up large elementsPer Forlin
The maximum transfer size of the stedma40 is (64k-1) x data-width. If the transfer size of one element exceeds this limit the job is split up and sent as linked transfer. Signed-off-by: Per Forlin <per.forlin@linaro.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-10-19ste_dma40: remove enum for endianessRabin Vincent
A bool will suffice. The default is little endian. Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-10-19ste_dma40: move priority to separate fieldRabin Vincent
And keep it low priority by default. Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-09-22DMAENGINE: ste_dma40: rewrote LCLA entries allocation codeJonas Aaberg
LLI allocation is now done on job level instead of channel level. Previously the maximum length of a linked job in hw on a logical channel was 8, since the LLIs where evenly divided. Now only executing jobs have allocated LLIs which increase the length to a maximum of 64 links in HW. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-09-22DMAENGINE: ste_dma40: code clean-upJonas Aaberg
This patch includes non functional code clean up changes, file header updates and a few magic numbers got defined. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-09-22DMAENGINE: ste_dma40: fix bug related to callback handlingJonas Aaberg
The callback got called even when it was not supposed to. Also removed some not needed interrupt trigger on/off code. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-06-23DMAENGINE: ste_dma40: allocate LCLA dynamicallyLinus Walleij
Switch to allocating LCLA in memory instead of having a fixed address. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-06-23DMAENGINE: ste_dma40: interrupts only on dstJonas Aaberg
We don't want interrupts when the source is done, only when the destination is done and everything is complete at the recieveing end of a transfer. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-06-23DMAENGINE: ste_dma40: various cosmetic clean-upsJonas Aaberg
This cleans up some extra newlines, removes some code duplication and moves the code to comply better with checkpatch. Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-04-14DMAENGINE: Support for ST-Ericssons DMA40 block v3Linus Walleij
This is a straightforward driver for the ST-Ericsson DMA40 DMA controller found in U8500, implemented akin to the existing COH 901 318 driver. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidh Kasagar <srinidhi.kasagar@stericsson.com> Cc: STEricsson_nomadik_linux@list.st.com Cc: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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