Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-25 Thread Tony Lindgren
* Benoit Cousson b-cous...@ti.com [130624 07:42]:
 Hi Tony,
 
 On 06/24/2013 12:19 PM, Tony Lindgren wrote:
  Hi,
  
  For merging this series, I suggest the following sets:
  
  * Joel A Fernandes joelag...@ti.com [130620 14:13]:
 
  Joel A Fernandes (3):
edma: config: Enable config options for EDMA
da8xx: config: Enable MMC and FS options
ARM: davinci: Fix compiler warnings in devices-da8xx
 
  Matt Porter (8):
dmaengine: edma: Add TI EDMA device tree binding
ARM: edma: Add DT and runtime PM support to the private EDMA API
ARM: edma: Add EDMA crossbar event mux support
dmaengine: edma: enable build for AM33XX
  
  Sekhar should queue the above patches, I've acked the
  mach-omap2/Kconfig change.
  
spi: omap2-mcspi: add generic DMA request support to the DT binding
spi: omap2-mcspi: convert to dma_request_slave_channel_compat()
  
  
  The spi changes should get merged via the driver list.
  
ARM: dts: add AM33XX EDMA support
ARM: dts: add AM33XX SPI DMA support
  
  Benoit should queue the .dts changes.
 
 I'll do that, but do you consider them for 3.11?

Yes right after -rc1 if it makes the DMA work. We almost
certainly need to send few branches of fixes after -rc1 once
we find out what might have broken by the removal of the
hwmod data..

But let's stick to minimal changes for the -rc series
naturally.

Regards,

Tony
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-25 Thread Sekhar Nori
On 6/25/2013 12:24 PM, Tony Lindgren wrote:
 * Benoit Cousson b-cous...@ti.com [130624 07:42]:
 Hi Tony,

 On 06/24/2013 12:19 PM, Tony Lindgren wrote:
 Hi,

 For merging this series, I suggest the following sets:

 * Joel A Fernandes joelag...@ti.com [130620 14:13]:

 Joel A Fernandes (3):
   edma: config: Enable config options for EDMA
   da8xx: config: Enable MMC and FS options
   ARM: davinci: Fix compiler warnings in devices-da8xx

 Matt Porter (8):
   dmaengine: edma: Add TI EDMA device tree binding
   ARM: edma: Add DT and runtime PM support to the private EDMA API
   ARM: edma: Add EDMA crossbar event mux support
   dmaengine: edma: enable build for AM33XX

 Sekhar should queue the above patches, I've acked the
 mach-omap2/Kconfig change.

   spi: omap2-mcspi: add generic DMA request support to the DT binding
   spi: omap2-mcspi: convert to dma_request_slave_channel_compat()


 The spi changes should get merged via the driver list.

   ARM: dts: add AM33XX EDMA support
   ARM: dts: add AM33XX SPI DMA support

 Benoit should queue the .dts changes.

 I'll do that, but do you consider them for 3.11?
 
 Yes right after -rc1 if it makes the DMA work. We almost
 certainly need to send few branches of fixes after -rc1 once
 we find out what might have broken by the removal of the
 hwmod data..

The DMA related changes went into arm-soc yesterday. So it should be
safe to send the DT patches in before the merge window opens. If Tony is
done with sending his pull requests may be Benoit can send to arm-soc
directly?

Thanks,
Sekhar
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-25 Thread Santosh Shilimkar
On Tuesday 25 June 2013 10:16 AM, Sekhar Nori wrote:
 On 6/25/2013 12:24 PM, Tony Lindgren wrote:
 * Benoit Cousson b-cous...@ti.com [130624 07:42]:
 Hi Tony,

 On 06/24/2013 12:19 PM, Tony Lindgren wrote:
 Hi,

 For merging this series, I suggest the following sets:

 * Joel A Fernandes joelag...@ti.com [130620 14:13]:

 Joel A Fernandes (3):
   edma: config: Enable config options for EDMA
   da8xx: config: Enable MMC and FS options
   ARM: davinci: Fix compiler warnings in devices-da8xx

 Matt Porter (8):
   dmaengine: edma: Add TI EDMA device tree binding
   ARM: edma: Add DT and runtime PM support to the private EDMA API
   ARM: edma: Add EDMA crossbar event mux support
   dmaengine: edma: enable build for AM33XX

 Sekhar should queue the above patches, I've acked the
 mach-omap2/Kconfig change.

   spi: omap2-mcspi: add generic DMA request support to the DT binding
   spi: omap2-mcspi: convert to dma_request_slave_channel_compat()


 The spi changes should get merged via the driver list.

   ARM: dts: add AM33XX EDMA support
   ARM: dts: add AM33XX SPI DMA support

 Benoit should queue the .dts changes.

 I'll do that, but do you consider them for 3.11?

 Yes right after -rc1 if it makes the DMA work. We almost
 certainly need to send few branches of fixes after -rc1 once
 we find out what might have broken by the removal of the
 hwmod data..
 
 The DMA related changes went into arm-soc yesterday. So it should be
 safe to send the DT patches in before the merge window opens. If Tony is
 done with sending his pull requests may be Benoit can send to arm-soc
 directly?
 
I was just typing the same thing. Even if Tony send them during rc's,
thats fine.

Regards,
Santosh

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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-24 Thread Tony Lindgren
Hi,

For merging this series, I suggest the following sets:

* Joel A Fernandes joelag...@ti.com [130620 14:13]:
 
 Joel A Fernandes (3):
   edma: config: Enable config options for EDMA
   da8xx: config: Enable MMC and FS options
   ARM: davinci: Fix compiler warnings in devices-da8xx

 Matt Porter (8):
   dmaengine: edma: Add TI EDMA device tree binding
   ARM: edma: Add DT and runtime PM support to the private EDMA API
   ARM: edma: Add EDMA crossbar event mux support
   dmaengine: edma: enable build for AM33XX

Sekhar should queue the above patches, I've acked the
mach-omap2/Kconfig change.

   spi: omap2-mcspi: add generic DMA request support to the DT binding
   spi: omap2-mcspi: convert to dma_request_slave_channel_compat()


The spi changes should get merged via the driver list.

   ARM: dts: add AM33XX EDMA support
   ARM: dts: add AM33XX SPI DMA support

Benoit should queue the .dts changes.
 
  Documentation/devicetree/bindings/dma/ti-edma.txt  |   34 +++
  Documentation/devicetree/bindings/spi/omap-spi.txt |   27 ++-
  arch/arm/Kconfig   |1 +
  arch/arm/boot/dts/am33xx.dtsi  |   22 ++
  arch/arm/common/edma.c |  242 
 ++--
  arch/arm/configs/da8xx_omapl_defconfig |3 +
  arch/arm/mach-davinci/devices-da8xx.c  |8 +-
  arch/arm/mach-omap2/Kconfig|2 +
  drivers/dma/Kconfig|4 +-
  drivers/spi/spi-omap2-mcspi.c  |   64 --
  include/linux/platform_data/edma.h |5 +-
  11 files changed, 369 insertions(+), 43 deletions(-)
  create mode 100644 Documentation/devicetree/bindings/dma/ti-edma.txt

Regards,

Tony
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-24 Thread Sekhar Nori
Sourav,

On 6/24/2013 3:49 PM, Tony Lindgren wrote:
 Hi,
 
 For merging this series, I suggest the following sets:
 
 * Joel A Fernandes joelag...@ti.com [130620 14:13]:

   spi: omap2-mcspi: add generic DMA request support to the DT binding
   spi: omap2-mcspi: convert to dma_request_slave_channel_compat()
 
 
 The spi changes should get merged via the driver list.

Can you please send just the DT binding patch above to Mark's correct
address with the relevant lists copied.

Thanks,
Sekhar
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-24 Thread Sourav Poddar

On Monday 24 June 2013 05:09 PM, Sekhar Nori wrote:

Sourav,

On 6/24/2013 3:49 PM, Tony Lindgren wrote:

Hi,

For merging this series, I suggest the following sets:

* Joel A Fernandesjoelag...@ti.com  [130620 14:13]:

   spi: omap2-mcspi: add generic DMA request support to the DT binding
   spi: omap2-mcspi: convert to dma_request_slave_channel_compat()


The spi changes should get merged via the driver list.

Can you please send just the DT binding patch above to Mark's correct
address with the relevant lists copied.

Thanks,
Sekhar

Sure. Will send that.
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-24 Thread Benoit Cousson
Hi Tony,

On 06/24/2013 12:19 PM, Tony Lindgren wrote:
 Hi,
 
 For merging this series, I suggest the following sets:
 
 * Joel A Fernandes joelag...@ti.com [130620 14:13]:

 Joel A Fernandes (3):
   edma: config: Enable config options for EDMA
   da8xx: config: Enable MMC and FS options
   ARM: davinci: Fix compiler warnings in devices-da8xx

 Matt Porter (8):
   dmaengine: edma: Add TI EDMA device tree binding
   ARM: edma: Add DT and runtime PM support to the private EDMA API
   ARM: edma: Add EDMA crossbar event mux support
   dmaengine: edma: enable build for AM33XX
 
 Sekhar should queue the above patches, I've acked the
 mach-omap2/Kconfig change.
 
   spi: omap2-mcspi: add generic DMA request support to the DT binding
   spi: omap2-mcspi: convert to dma_request_slave_channel_compat()
 
 
 The spi changes should get merged via the driver list.
 
   ARM: dts: add AM33XX EDMA support
   ARM: dts: add AM33XX SPI DMA support
 
 Benoit should queue the .dts changes.

I'll do that, but do you consider them for 3.11?

Thanks,
Benoit

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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-21 Thread Sekhar Nori
Joel,

On 6/21/2013 2:36 AM, Joel A Fernandes wrote:
 From: Joel A Fernandes agnel.j...@gmail.com
 
 This series is remaining of Matt Porter's EDMA patches for AM33XX EDMA support
 with changes for few pending review comments on v11 series.

I have posted a branch with fixes for patches accepted by me in this
series (also posted inline as replies to specific patches).

https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/log/?h=v3.11/soc-2

Can you please give it a good test - especially on AM335x? I will send a
pull request after you confirm. If you find bugs please send incremental
patches so I can merge into the original patch.

Thanks,
Sekhar
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-21 Thread Joel A Fernandes
Hi Sekhar,

On Fri, Jun 21, 2013 at 5:27 AM, Sekhar Nori nsek...@ti.com wrote:
 Joel,

 On 6/21/2013 2:36 AM, Joel A Fernandes wrote:
 From: Joel A Fernandes agnel.j...@gmail.com

 This series is remaining of Matt Porter's EDMA patches for AM33XX EDMA 
 support
 with changes for few pending review comments on v11 series.

 I have posted a branch with fixes for patches accepted by me in this
 series (also posted inline as replies to specific patches).

 https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/log/?h=v3.11/soc-2

 Can you please give it a good test - especially on AM335x? I will send a
 pull request after you confirm. If you find bugs please send incremental
 patches so I can merge into the original patch.

This breaks on AM33XX due to dangling pointer, I sent a follow up
patch addressing it.

However, with this branch I still get..
mmc: unable to obtain RX DMA engine channel 25

Is there anything obvious you might have changed that is causing this?

Thanks,
Joel
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Re: [PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-21 Thread Joel A Fernandes
On Fri, Jun 21, 2013 at 7:07 PM, Joel A Fernandes agnel.j...@gmail.com wrote:
 Hi Sekhar,

 On Fri, Jun 21, 2013 at 5:27 AM, Sekhar Nori nsek...@ti.com wrote:
 Joel,

 On 6/21/2013 2:36 AM, Joel A Fernandes wrote:
 From: Joel A Fernandes agnel.j...@gmail.com

 This series is remaining of Matt Porter's EDMA patches for AM33XX EDMA 
 support
 with changes for few pending review comments on v11 series.

 I have posted a branch with fixes for patches accepted by me in this
 series (also posted inline as replies to specific patches).

 https://git.kernel.org/cgit/linux/kernel/git/nsekhar/linux-davinci.git/log/?h=v3.11/soc-2

 Can you please give it a good test - especially on AM335x? I will send a
 pull request after you confirm. If you find bugs please send incremental
 patches so I can merge into the original patch.

 [Joel]
 This breaks on AM33XX due to dangling pointer, I sent a follow up
 patch addressing it.

 However, with this branch I still get..
 mmc: unable to obtain RX DMA engine channel 25

[Joel]
Fixed. I posted a v2 patch. With this, on v3.11/soc-2 branch - AM33xx
MMC is working (root fs mount).

Tested-by: Joel A Fernandes joelag...@ti.com

Thanks,
Joel
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[PATCH v12 00/11] DMA Engine support for AM33XX

2013-06-20 Thread Joel A Fernandes
From: Joel A Fernandes agnel.j...@gmail.com

This series is remaining of Matt Porter's EDMA patches for AM33XX EDMA support
with changes for few pending review comments on v11 series.

Also included are EDMA config and build options for OMAP2PLUS and Davinci by
selecting DMADEVICES, and options to enable MMCSD on Davinci (da8xx_omapl).

Currently this is required for AM33XX (Beaglebone or EVM) to access MMC
and be able mount to rootfs and boot till command prompt over MMC.
Unless there are other pending review comments, I hope this series can
make it into 3.11 merge window, the dependent series has been posted at [1]
and completed review.

Tested EDMA on AM1808 EVM and AM33XX Beaglebone with MMC.

Sekhar Nori has posted a GIT PULL [1] which has 2 patches this series depends 
on:
[1] http://www.spinics.net/lists/arm-kernel/msg251503.html

Changes since v11:
- Fixed several style issues and warnings
- Broke up the build option patch into smaller ones
- Various miscellaneous fixups addressed from v10 feedback

Changes since v10:
- Reworked documentation based on Arnd's feedback
- Moved EDMA bindings documentation earlier in series
- Dropped mention on am33xx on 2/8 and 3/8 in the series

Changes since v9:
- Droped reserved and queue DT entries from Documentation
for now from the original patch series.
- Drop DT entries that are non-hardware-description
- Split EDMA xbar support out of original EDMA DT parsing patch
to keep it easier for review.
- Rewrite shift and offset calculation xbar event mapping.
- Setup default one-to-one mapping for queue_priority and queue_tc
mapping as discussed in.
- Split out xbar stuff to separate patch.

Reference discussion:
   https://patchwork.kernel.org/patch/2226761/

Changes since v8:
- Removed edma node interrupt-parent property, it is inherited

Changes since v7:
- Dropped dmaengine compat() patch. It is upstream.
- Submitted edma_alloc_slot() error checking bug fix separately,
  now a dependency
- Fixed bisect issues due to 3/10 hunks that went into 1/10
- Fixed incorrect IS_ERRVALUE() use in 3/10

Changes since v6:
- Converted edma_of_read_*() to wrappers around of_property_read_*()
- Fixed wording on the omap-spi generic DMA properties
- Added comment/check to clarify that the driver only supports
  a single EDMA instance when booting from DT

Changes since v5:
- Dropped mmc portion and moved it to a separate series
- Incorporate corrected version of dma_request_slave_channel_compat()
- Fix #defines and enablement of TI_PRIV_EDMA option

Changes since v4:
- Fixed debug section mismatch in private edma api [01/14]
- Respun format-patch to catch the platform_data/edma.h rename [01/14]
- Removed address/size-cells from the EDMA binding [05/14]

Changes since v3:
- Rebased on 3.8-rc3
- No longer an RFC
- Fixed bugs in DT/pdata parsing reported by Vaibhav Bedia
- Restored all the Davinci pdata to const
- Removed max_segs hack in favor of using dma_get_channel_caps()
- Fixed extra parens, __raw_* accessors and, ioremap error checks
  in xbar handling
- Removed excess license info in platform_data/edma.h
- Removed unneeded reserved channels data for AM33xx
- Removed test-specific pinmuxing from dts files
- Adjusted mmc1 node to be disabled by default in the dtsi

Changes since v2:
- Rebased on 3.7-rc1
- Fixed bug in DT/pdata parsing first found by Gururaja
  that turned out to be masked by some toolchains
- Dropped unused mach-omap2/devices.c hsmmc patch
- Added AM33XX crossbar DMA event mux support
- Added am335x-evm support

Changes since v1:
- Rebased on top of mainline from 12250d8
- Dropped the feature removal schedule patch
- Implemented dma_request_slave_channel_compat() and
  converted the mmc and spi drivers to use it
- Dropped unneeded #address-cells and #size-cells from
  EDMA DT support
- Moved private EDMA header to linux/platform_data/ and
  removed some unneeded definitions
- Fixed parsing of optional properties

This series adds DMA Engine support for AM33xx, which uses
an EDMA DMAC. The EDMA DMAC has been previously supported by only
a private API implementation (much like the situation with OMAP
DMA) found on the DaVinci family of SoCs.

The series applies on top of 3.10-rc4.

The approach taken is similar to how OMAP DMA is being converted to
DMA Engine support. With the functional EDMA private API already
existing in mach-davinci/dma.c, we first move that to an ARM common
area so it can be shared. Adding DT and runtime PM support to the
private EDMA API implementation allows it to run on AM33xx. AM33xx
*only* boots using DT so the