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path: root/drivers/dma/ste_dma40.c
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2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-01-30dma40: 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>
2011-01-30dma40: stop ongoing transfers in DMA_TERMINATE_ALLRabin Vincent
The current implementation of DMA_TERMINATE_ALL leaves ongoing transfers running. Fix it. 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>
2011-01-30dma40: fix DMA_SG capability and channelsRabin Vincent
The DMA_SG cap is enabled on the wrong channel, and the pointers are repeatedly set incorrectly. Fix it and combine the ops settings to a common function. 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>
2011-01-30dma40: handle failure to allocate first LCLARabin 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>
2011-01-30dma40: extract lcla code into separate functionRabin 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>
2011-01-30dma40: unify src/dst addr checkRabin 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>
2011-01-30dma40: 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>
2011-01-30dma40: 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>
2011-01-30dma40: 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>
2011-01-30dma40: combine mem and slave prep_sg functionsRabin 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>
2011-01-30dma40: remove export of stedma40_memcpy_sgRabin Vincent
The dmaengine framework has the API for this now. 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>
2011-01-30dma40: combine mem and slave sg-to-lli functionsRabin 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>
2011-01-30dma40: remove duplicated dev addr codeRabin 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>
2011-01-30dma40: combine duplicated d40_pool_lli_alloc() callsRabin 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>
2011-01-30dma40: combine desc init functionsRabin Vincent
The desc init code can be shared between the mem and slave prep routines. 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>
2011-01-30dma40: 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>
2011-01-30dma40: remove unnecessary castsRabin 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>
2011-01-30dma40: fix DMA API usage for LLIsRabin Vincent
Map and unmap the LLIs and use dma_sync_single_for_device() appropriately instead of mapping and never unmapping them. 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>
2011-01-30dma40: fix DMA API usage for LCLARabin Vincent
Map the buffer once and use dma_sync*() appropriately instead of mapping the buffer over and over without unmapping it. 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>
2011-01-30dma40: remove unnecessary ALIGN()sRabin Vincent
ALIGN(x * y, y) == x * y ALIGN(aligned + x * y, y) == aligned + x * y 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>
2011-01-30dma40: allow realtime and priority for event linesRabin Vincent
DB8500v2's DMA40 (revision 3) allows setting event lines as high priority and real time. 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>
2011-01-30dma40: fix comment to refer to SOCs rather than boardsRabin Vincent
And add DB8500v2 information. 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>
2011-01-30dma40: use helpers for error functionsRabin Vincent
Almost every use of dev_err in this driver prints the function name. Abstract out wrappers to help with this and reduce code duplication. 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>
2011-01-30dma40: use helpers for channel type checkRabin Vincent
The somewhat confusing check d40c->log_num == D40_PHY_CHAN and its variants are used in several places to check if a channel is logical or physical. Use appropriately named helpers to do this to make the code more readable. 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>
2011-01-30dma40: use helper for channel registers baseRabin Vincent
The register offset computation for accessing channel registers is copy/pasted in several places. Create a helper function to do it. 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>
2011-01-30dma40: remove "hardware link with previous jobs" codeRabin Vincent
This link in hardware with previous jobs code is: - unused, no clients using or requiring this feature - incomplete, being implemented only for physical channels - broken, only working to perform one link Remove it. This also allows us to get rid of the channel pause in the submit_tx() routine. 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>
2011-01-30dma40: ensure event lines get enabledRabin Vincent
The controller sometimes fails to register the enable of the event line when both src and dst event lines are used on the same logical channel. Implement the recommended software workaround, which is to retry the write until it works. 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>
2011-01-30dma40: make init function 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>
2011-01-04dmaengine: 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>
2010-10-19Merge branch 'dma40' into dmaengineDan Williams
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 mode_opt to separate configRabin Vincent
Defaults are "basic mode" for physical channels, and "logical source logical destination" for logical channels. 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 channel mode to a separate fieldRabin Vincent
And keep it logical 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>
2010-10-19ste_dma40: add variable to indicate valid dma_cfgRabin Vincent
Since we want to reduce the amount of required channel configuration and remove channel_type, don't depend on it to indicate whether the configuration is valid. 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>
2010-10-07Merge branches 'dma40', 'pl08x', 'fsldma', 'imx' and 'intel-mid' into dmaengineDan Williams
2010-10-07DMAENGINE: Remove stedma40_set_psize and pre_transfer hook in ste_dma40Per Forlin
Remove obsolete pre_transfer hook in stedma40_chan_cfg. The intent of this hook is merely to handle burst size compensation for ux500 variant MMCI. Remove obsolete stedma40_set_psize since it is only called from pre_transfer. DMAEngine device_control replaces the functionality of stedma40_set_psize. Signed-off-by: Per Forlin <per.forlin@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-10-07DMAENGINE: Set burst size for phy and log chans in ste_dma40 dev_controlPer Forlin
Set burst for physical or logical channels respectively. Convert the values in dma_cfg to dma reg bits for physical or logical channels. Signed-off-by: Per Forlin <per.forlin@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-10-07DMAENGINE: ste_dma40: fix resource leaks in error paths.Rabin Vincent
Fix some leaks of allocated descriptors in error paths. 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>
2010-10-07DMAENGINE: ste_dma40: fix desc_getRabin Vincent
Fix desc_get to alloc a descriptor from the cache if the ones in the list are waiting for the ack. Also, memzero the descriptor when allocated from the list to ensure all fields are cleared. 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>
2010-10-07DMAENGINE: ste_dma40: fix clk_get failure pathRabin Vincent
clk_get returns an ERR_PTR. 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>
2010-10-07DMAENGINE: ste_dma40: fix disabled channels listRabin Vincent
The value in the array, not the index, specifies the channel to be disabled. 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>
2010-10-07ste_dma40: implement support for scatterlist to scatterlist copyIra Snyder
Now that the DMAEngine API has support for scatterlist to scatterlist copy, implement support for the STE DMA40 DMA controller. Cc: Linus Walleij <linus.ml.walleij@gmail.com> Acked-by: Per Fridén <per.friden@stericsson.com> Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-09-22DMAENGINE: ste_dma40: don't pause/resume non-executing channelsJonas Aaberg
There is no point in pausing what isn't running. 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: 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: fix possible use of uninitialized variableJonas Aaberg
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: corrected is_paused behaviorJonas Aaberg
The handling of pause detection was slightly incorrect. 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: added support for link jobs in hwJonas Aaberg
If a new job is added on a physical channel that already has a job, the new job is linked in hw to the old job instead of queueing up the jobs. 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: removed a few magic numbersJonas Aaberg
Make sure to extract the revision field explicitly and document what bits are being accessed here without magic numbers. 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>
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-04 14:02:19 +0000