linux-toradex.git/drivers/dma/mmp_tdma.c, branch v4.4.64 Linux kernel for Apalis and Colibri modules dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05T05:23:52+00:00 Maxime Ripard maxime.ripard@free-electrons.com 2015-07-20T08:41:32+00:00 77a68e56aae141d3e9c740a0ac43362af75d4890 Most drivers need to set constraints on the buffer alignment for async tx operations. However, even though it is documented, some drivers either use a defined constant that is not matching what the alignment variable expects (like DMA_BUSWIDTH_* constants) or fill the alignment in bytes instead of power of two. Add a new enum for these alignments that matches what the framework expects, and convert the drivers to it. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
Most drivers need to set constraints on the buffer alignment for async tx
operations. However, even though it is documented, some drivers either use
a defined constant that is not matching what the alignment variable expects
(like DMA_BUSWIDTH_* constants) or fill the alignment in bytes instead of
power of two.

Add a new enum for these alignments that matches what the framework
expects, and convert the drivers to it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
genalloc: rename of_get_named_gen_pool() to of_gen_pool_get() 2015-07-01T02:45:01+00:00 Vladimir Zapolskiy vladimir_zapolskiy@mentor.com 2015-06-30T22:00:07+00:00 abdd4a7025282fbe3737e1bcb5f51afc8d8ea1b8 To be consistent with other kernel interface namings, rename of_get_named_gen_pool() to of_gen_pool_get(). In the original function name "_named" suffix references to a device tree property, which contains a phandle to a device and the corresponding device driver is assumed to register a gen_pool object. Due to a weak relation and to avoid any confusion (e.g. in future possible scenario if gen_pool objects are named) the suffix is removed. [sfr@canb.auug.org.au: crypto/marvell/cesa - fix up for of_get_named_gen_pool() rename] Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Boris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
To be consistent with other kernel interface namings, rename
of_get_named_gen_pool() to of_gen_pool_get().  In the original function
name "_named" suffix references to a device tree property, which contains
a phandle to a device and the corresponding device driver is assumed to
register a gen_pool object.

Due to a weak relation and to avoid any confusion (e.g.  in future
possible scenario if gen_pool objects are named) the suffix is removed.

[sfr@canb.auug.org.au: crypto/marvell/cesa - fix up for of_get_named_gen_pool() rename]
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2015-04-24T16:49:37+00:00 Linus Torvalds torvalds@linux-foundation.org 2015-04-24T16:49:37+00:00 d6a4c0e5d3d433ef296f8f417e835329a834a256 Pull slave-dmaengine updates from Vinod Koul: - new drivers for: - Ingenic JZ4780 controller - APM X-Gene controller - Freescale RaidEngine device - Renesas USB Controller - remove device_alloc_chan_resources dummy handlers - sh driver cleanups for peri peri and related emmc and asoc patches as well - fixes and enhancements spread over the drivers * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits) dmaengine: dw: don't prompt for DW_DMAC_CORE dmaengine: shdmac: avoid unused variable warnings dmaengine: fix platform_no_drv_owner.cocci warnings dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe() dmaengine: at_xdmac: unlock spin lock before return dmaengine: xgene: devm_ioremap() returns NULL on error dmaengine: xgene: buffer overflow in xgene_dma_init_channels() dmaengine: usb-dmac: Fix dereferencing freed memory 'desc' dmaengine: sa11x0: report slave capabilities to upper layers dmaengine: vdma: Fix compilation warnings dmaengine: fsl_raid: statify fsl_re_chan_probe dmaengine: Driver support for FSL RaidEngine device. dmaengine: xgene_dma_init_ring_mngr() can be static Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes dmaengine: Add support for APM X-Gene SoC DMA engine driver dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver dmaengine: renesas,usb-dmac: Add device tree bindings documentation dmaengine: edma: fixed wrongly initialized data parameter to the edma callback dmaengine: ste_dma40: fix implicit conversion ... 
Pull slave-dmaengine updates from Vinod Koul:

 - new drivers for:
        - Ingenic JZ4780 controller
        - APM X-Gene controller
        - Freescale RaidEngine device
        - Renesas USB Controller

  - remove device_alloc_chan_resources dummy handlers

  - sh driver cleanups for peri peri and related emmc and asoc patches
    as well

  - fixes and enhancements spread over the drivers

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits)
  dmaengine: dw: don't prompt for DW_DMAC_CORE
  dmaengine: shdmac: avoid unused variable warnings
  dmaengine: fix platform_no_drv_owner.cocci warnings
  dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()
  dmaengine: at_xdmac: unlock spin lock before return
  dmaengine: xgene: devm_ioremap() returns NULL on error
  dmaengine: xgene: buffer overflow in xgene_dma_init_channels()
  dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'
  dmaengine: sa11x0: report slave capabilities to upper layers
  dmaengine: vdma: Fix compilation warnings
  dmaengine: fsl_raid: statify fsl_re_chan_probe
  dmaengine: Driver support for FSL RaidEngine device.
  dmaengine: xgene_dma_init_ring_mngr() can be static
  Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding
  arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes
  dmaengine: Add support for APM X-Gene SoC DMA engine driver
  dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver
  dmaengine: renesas,usb-dmac: Add device tree bindings documentation
  dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
  dmaengine: ste_dma40: fix implicit conversion
  ...
dmaengine: constify of_device_id array 2015-03-18T16:43:14+00:00 Fabian Frederick fabf@skynet.be 2015-03-16T19:17:14+00:00 57c0342239b028db54741209a051a4d5f7c857e7 of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dma: mmp-tdma: refine dma disable and dma-pos update 2015-03-04T12:33:15+00:00 Qiao Zhou zhouqiao@marvell.com 2015-03-03T01:16:08+00:00 1eed601a5b02a1f0bbabd155aeea7879fc3708eb Below are the refinements. 1. Set DMA abort bit when disabling dma channel. This will clear the remaining data in dma FIFO, to fix channel-swap issue. 2. Read DMA HW pointer when updating DMA status. Previously dma position is calculated by adding one period size in dma interrupt. This is inaccurate/insufficient for some high-quality audio APP. Since interrupt bottom half handler has variable schedule delay, it causes big error when calculating sample delay. Read the actual HW pointer and feedback can improve the accuracy. 3. Do some minor code clean. Signed-off-by: Qiao Zhou <zhouqiao@marvell.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
Below are the refinements.
1. Set DMA abort bit when disabling dma channel. This will clear
the remaining data in dma FIFO, to fix channel-swap issue.
2. Read DMA HW pointer when updating DMA status. Previously dma
position is calculated by adding one period size in dma interrupt.
This is inaccurate/insufficient for some high-quality audio APP.
Since interrupt bottom half handler has variable schedule delay,
it causes big error when calculating sample delay. Read the actual
HW pointer and feedback can improve the accuracy.
3. Do some minor code clean.

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dmaengine: mmp-tdma: fix terminate_all return code 2015-01-13T15:50:10+00:00 Arnd Bergmann arnd@arndb.de 2015-01-13T13:31:46+00:00 3c20ba5fb5b9e3d5e266bfab316ee10b77da88e0 In a recent cleanup, the mmp_tdma_terminate_all function was introduced but does not set a proper return value. Almost no slave driver uses that return value, but if one does, the result will be undefined, which the compiler warns about: dma/mmp_tdma.c: In function 'mmp_tdma_terminate_all': dma/mmp_tdma.c:474:1: warning: no return statement in function returning non-void [-Wreturn-type] This changes the driver to return zero, like most other drivers do. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: f43a6fd400ba6 ("dmaengine: mmp-tdma: Split device_control") Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
In a recent cleanup, the mmp_tdma_terminate_all function was
introduced but does not set a proper return value. Almost
no slave driver uses that return value, but if one does, the
result will be undefined, which the compiler warns about:

dma/mmp_tdma.c: In function 'mmp_tdma_terminate_all':
dma/mmp_tdma.c:474:1: warning: no return statement in function returning non-void [-Wreturn-type]

This changes the driver to return zero, like most other
drivers do.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: f43a6fd400ba6 ("dmaengine: mmp-tdma: Split device_control")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dmaengine: mmp-tdma: don't include mach/regs-icu.h 2015-01-13T15:50:10+00:00 Arnd Bergmann arnd@arndb.de 2015-01-13T13:25:19+00:00 2f56eaff2010326848f13c4a1e468a2dd1527f0b The mmp tdma driver does not actually require this header, and we want to enable multiplatform support for MMP, which would make it inaccessible and cause a build error. This patch just removes the old #include. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
The mmp tdma driver does not actually require this header, and
we want to enable multiplatform support for MMP, which would
make it inaccessible and cause a build error.

This patch just removes the old #include.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dmaengine: mmp-tdma: Split device_control 2014-12-22T06:59:00+00:00 Maxime Ripard maxime.ripard@free-electrons.com 2014-11-17T13:42:22+00:00 f43a6fd400ba66b59bda41e72db2ae1bd5cd549b Split the device_control callback of the Marvell MMP TDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
Split the device_control callback of the Marvell MMP TDMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dmaengine: Remove .owner field for driver 2014-11-06T06:24:18+00:00 Kiran Padwal kiran.padwal@smartplayin.com 2014-09-24T06:39:23+00:00 cd166280b7a1d74248897b48aea39217015ee8c2 There is no need to init .owner field. Based on the patch from Peter Griffin <peter.griffin@linaro.org> "mmc: remove .owner field for drivers using module_platform_driver" This patch removes the superflous .owner field for drivers which use the module_platform_driver API, as this is overriden in platform_driver_register anyway." Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com> [for nvidia] Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
There is no need to init .owner field.

Based on the patch from Peter Griffin <peter.griffin@linaro.org>
"mmc: remove .owner field for drivers using module_platform_driver"

This patch removes the superflous .owner field for drivers which
use the module_platform_driver API, as this is overriden in
platform_driver_register anyway."

Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com>
[for nvidia]
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
dmaengine: mmp_tdma: add DMA_PREP_INTERRUPT flag support 2014-09-11T05:17:44+00:00 Qiao Zhou zhouqiao@marvell.com 2014-09-10T08:40:48+00:00 e6222263124daae6be4b38b856af352667d95929 add DMA_PREP_INTERRUPT flag to support no_period_wakeup, in which user space app doesn't want audio interrupt to wake up audio threads. Signed-off-by: Qiao Zhou <zhouqiao@marvell.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 
add DMA_PREP_INTERRUPT flag to support no_period_wakeup, in which
user space app doesn't want audio interrupt to wake up audio threads.

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>