Commit Graph

83 Commits

Author SHA1 Message Date
Miquel Raynal e52dca7216
ASoC: soc-generic-dmaengine-pcm: Fix function name in comment
While browsing/grepping in the sound core, I found that
snd_dmaengine_set_config_from_dai_data() did not exist, in favor of
snd_dmaengine_pcm_set_config_from_dai_data(). Fix the typo.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230922161547.594484-1-miquel.raynal@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-09-22 17:33:04 +01:00
Takashi Iwai ef98a48832 ASoC: Name iov_iter argument as iterator instead of buffer
While transitioning ASoC code for iov_iter usages, I kept the argument
name as "buf" as the original code.  But, iov_iter is an iterator, and
using the name "buf" may be misleading: the crucial difference is that
iov_iter can be proceeded after the operation, hence it can't be
passed twice, while a simple "buffer" sounds as if reusable.

To make the usage clearer, rename the argument from "buf" to "iter".
There is no functional changes, just names.

Fixes: 66201cacc3 ("ASoC: component: Add generic PCM copy ops")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/CAHk-=wje+VkXjjfVTmK-uJdG_M5=ar14QxAwK+XDiq07k_pzBg@mail.gmail.com
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230831130457.8180-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-01 15:38:49 +02:00
Takashi Iwai 69d0fd348d ASoC: dmaengine: Drop unused iov_iter for process callback
Passing the iov_iter to the process callback is rather buggy, as the
iterator has been already processed for playback.  Similarly, it makes
the copy for capture buggy after the process callback reading the
iterator out.  Moreover, all existing process callbacks don't refer to
the passed iterator at all.  So, it's better to drop the argument from
the process callback.

Fixes: 9bebd65443 ("ASoC: dmaengine: Use iov_iter for process callback, too")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/CAHk-=wje+VkXjjfVTmK-uJdG_M5=ar14QxAwK+XDiq07k_pzBg@mail.gmail.com
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230831130457.8180-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-09-01 15:38:29 +02:00
Takashi Iwai 9bebd65443 ASoC: dmaengine: Use iov_iter for process callback, too
Along with the conversion to PCM copy ops, use the iov_iter for the
pointer to be passed to the dmaengine process callback, too.  It
avoids the direct reference of iter_iov_addr(), and it can potentially
help for the drivers to access memory properly (although both atmel
and stm drivers don't use the given buffer address at all for now).

Reviewed-by: Mark Brown <broonie@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: Olivier Moysan <olivier.moysan@foss.st.com>
Cc: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20230815190136.8987-23-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-18 12:19:18 +02:00
Takashi Iwai 56b00d10ff ASoC: dmaengine: Convert to generic PCM copy ops
This patch converts the ASoC dmaenging driver code to use the new
unified PCM copy callback.  It's a straightforward conversion from
*_user() to *_iter() variants.

The process callback is still using the direct pointer as of now, but
it'll be converted in the next patch.

Note that copy_from/to_iter() returns the copied bytes, hence the
error condition is adjusted accordingly.

Reviewed-by: Mark Brown <broonie@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20230815190136.8987-22-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2023-08-18 12:19:18 +02:00
Kuninori Morimoto 3989ade2d1
ASoC: soc.h: remove num_cpus/codecs
Current rtd has both dai_link pointer (A) and num_cpus/codecs (B).

(A)	rtd->dai_link	= dai_link;
(B)	rtd->num_cpus	= dai_link->num_cpus;
(B)	rtd->num_codecs	= dai_link->num_codecs;

But, we can get num_cpus/codecs (B) via dai_link (A).
This means we don't need to keep num_cpus/codecs on rtd.
This patch removes these.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87sfkmv9n3.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-09-20 12:19:30 +01:00
Sascha Hauer 43556516ff
ASoC: soc-generic-dmaengine-pcm: Use default config when none is given
snd_dmaengine_pcm_register() can be passed a NULL pointer for the config
which means that the we have to test for pcm->config being non NULL
before accessing it. Make the code more straight forward by providing a
default config when none is passed. With this pcm->config is never NULL
and we can skip all the if (pcm->config) tests.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20220502131335.2604158-1-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-04 15:31:19 +01:00
Codrin Ciubotariu 660564fc9a
ASoC: dmaengine: Restore NULL prepare_slave_config() callback
As pointed out by Sascha Hauer, this patch changes:
if (pmc->config && !pcm->config->prepare_slave_config)
        <do nothing>
to:
if (pmc->config && !pcm->config->prepare_slave_config)
        snd_dmaengine_pcm_prepare_slave_config()

This breaks the drivers that do not need a call to
dmaengine_slave_config(). Drivers that still need to call
snd_dmaengine_pcm_prepare_slave_config(), but have a NULL
pcm->config->prepare_slave_config should use
snd_dmaengine_pcm_prepare_slave_config() as their prepare_slave_config
callback.

Fixes: 9a1e13440a ("ASoC: dmaengine: do not use a NULL prepare_slave_config() callback")
Reported-by: Sascha Hauer <sha@pengutronix.de>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220421125403.2180824-1-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-25 13:58:18 +01:00
Codrin Ciubotariu 9a1e13440a
ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
Even if struct snd_dmaengine_pcm_config is used, prepare_slave_config()
callback might not be set. Check if this callback is set before using it.

Fixes: fa654e0853 ("ASoC: dmaengine-pcm: Provide default config")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220307122202.2251639-2-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-08 13:38:56 +00:00
Sascha Hauer 300689fb04
ASoC: soc-generic-dmaengine-pcm: set period_bytes_min based on maxburst
In dmaengine_pcm_set_runtime_hwparams() period_bytes_min is hardcoded to
256. For some applications that may be too big. This patch changes that
to calculate the value based on dma_data->maxburst. The correct value
would be maxburst multiplied by the address width of the hardware FIFO.
Unfortunately the address width is dynamically calculated based on the
stream parameters and is not known at open time, so the worst case
is chosen here which is 8 bytes, the maximum that is supported by
dmaengine drivers.
Not all drivers may set a maxburst value, so we fall back to the
previously used hardcoded value of 256 bytes.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20220301113446.1053171-1-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-02 13:45:25 +00:00
Shengjiu Wang 88c62b1628
ASoC: soc-generic-dmaengine-pcm: separate max_buffer_size assignment
The config->pcm_hardware may be NULL when config->prealloc_buffer_size
is not zero, so it is better to move max_buffer_size assignment under
a separate condition.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1642646642-15908-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-24 13:31:57 +00:00
Sugar Zhang b0e3b0a707
ASoC: dmaengine: Introduce module option prealloc_buffer_size_kbytes
Currently, The fixed 512KB prealloc buffer size is too larger for
tiny memory kernel (such as 16MB memory). This patch adds the module
option "prealloc_buffer_size_kbytes" to specify prealloc buffer size.

It's suitable for cards which use the generic dmaengine pcm driver
with no config.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1632394246-59341-1-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-09-27 13:01:13 +01:00
Kuninori Morimoto a265976889
ASoC: soc-generic-dmaengine-pcm: cleanup cppcheck warning at dmaengine_copy_user()
This patch cleanups below cppcheck warning.

sound/soc/soc-generic-dmaengine-pcm.c:310:6: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int ret;
     ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87zgtiyomb.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-16 13:29:30 +01:00
Kuninori Morimoto 9cec66fa70
ASoC: soc-generic-dmaengine-pcm: cleanup cppcheck warning at dmaengine_pcm_new()
This patch cleanups below cppcheck warning.

sound/soc/soc-generic-dmaengine-pcm.c:233:28: style: The scope of the variable 'substream' can be reduced. [variableScope]
 struct snd_pcm_substream *substream;
                           ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/871r6u0yzs.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-16 13:29:29 +01:00
Kuninori Morimoto 0a1e5ac50d
ASoC: soc-generic-dmaengine-pcm: cleanup cppcheck warning at dmaengine_pcm_hw_params()
This patch cleanups below cppcheck warning.

sound/soc/soc-generic-dmaengine-pcm.c:82:6: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int ret;
     ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/8735ra0yzz.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-16 13:29:28 +01:00
Mark Brown 86f29c7442
ASoC: dmaengine: Document support for TX only or RX only streams
We intentionally do not return an error if we get a permanent failure
from dma_request_chan() in order to support systems which have TX only
or RX only channels. Add a comment documenting this.

Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Link: https://lore.kernel.org/r/20201008161105.21804-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-10-09 15:11:20 +01:00
Cezary Rojewski ea029dd8d0
ASoC: core: Two step component registration
Modify snd_soc_add_component so it calls snd_soc_component_initialize
no longer and thus providing true two-step registration. Drivers may
choose to change component's fields before actually adding it to ASoC
subsystem.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20200731144146.6678-4-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-31 19:35:59 +01:00
Kuninori Morimoto 0ceef681e3
ASoC: soc-xxx: add asoc_substream_to_rtd()
Current soc-xxx are getting rtd from substream by

	rtd = substream->private_data;

But, getting data from "private_data" is very unclear.
This patch adds asoc_substream_to_rtd() macro which is
easy to understand that rtd from substream.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87wo2z0yve.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-23 19:07:19 +01:00
Maxime Ripard 58f30150ff
ASoC: core: Remove only the registered component in devm functions
The ASoC devm_ functions that register a component
(devm_snd_soc_register_component and devm_snd_dmaengine_pcm_register) will
clean their component by running snd_soc_unregister_component.

snd_soc_unregister_component will then remove all the components for the
device that was used to register the component in the first place.

However, some drivers register several components (such as a DAI and a
dmaengine PCM) on the same device, and if the dmaengine PCM is registered
first, then the DAI will be cleaned up first and
snd_dmaengine_pcm_unregister will be called next.

snd_dmaengine_pcm_unregister will then lookup the dmaengine PCM component
on the device, and if there's one unregister that component and release its
dmaengine channels. That doesn't happen in practice though since the first
call to snd_soc_unregister_component removed all the components, so we
never get the chance to release the dmaengine channels.

In order to fix this, instead of removing all the components for a given
device, we can simply remove the component that was registered in the first
place. We should have the same number of component registration than we
have components, so it should work just fine.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200707074237.287171-1-maxime@cerno.tech
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-07 11:55:46 +01:00
Shengjiu Wang a9a21e1eaf
ASoC: dmaengine_pcm: export soc_component_to_pcm
In DPCM case, Front-End needs to get the dma chan which has
been requested by Back-End and reuse it.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/429c6ae1f3c5b47eb893f475d531d71cdcfe34c0.1591947428.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-12 14:18:02 +01:00
Kuninori Morimoto c2233a2661
ASoC: soc: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87imimboli.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-14 14:00:44 +01:00
Bard Liao 6e1276a5e6
ASoC: Return error if the function does not support multi-cpu
Multi cpu is not supported by all functions yet. Add an error message
and return.

Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200225133917.21314-6-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-26 17:35:04 +00:00
Kuninori Morimoto ee10fbe1cd
ASoC: soc-generic-dmaengine-pcm: use for_each_pcm_streams() macro
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87zhdhaa8x.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-18 23:37:08 +00:00
Mark Brown a7196caf83
Merge branch 'asoc-5.6' into asoc-next 2020-01-23 12:36:45 +00:00
Shengjiu Wang 130128098a
ASoC: soc-generic-dmaengine-pcm: Fix error handling
Remove the return value checking, that is to align with the code
before adding snd_dmaengine_pcm_refine_runtime_hwparams function.

Otherwise it causes a regression on the HiKey board:

[   17.721424] hi6210_i2s f7118000.i2s: ASoC: can't open component f7118000.i2s: -6

Fixes: e957204e73 ("ASoC: pcm_dmaengine: Extract snd_dmaengine_pcm_refine_runtime_hwparams")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reported-by: John Stultz <john.stultz@linaro.org>
Link: https://lore.kernel.org/r/1579505286-32085-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-21 17:01:34 +00:00
Takashi Iwai d708c2b36b
ASoC: generic-dmaengine-pcm: Use managed buffer allocation
Clean up the driver with the new managed buffer allocation API.
The hw_free callback became superfluous and got dropped.

Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210142614.19405-11-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11 16:43:23 +00:00
Takashi Iwai 2680c3127c
ASoC: generic-dmaengine: Drop superfluous ioctl PCM ops
ASoC PCM core deals the empty ioctl field now as default.
Let's kill the redundant lines.

Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210145406.21419-16-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11 15:59:03 +00:00
Peter Ujfalusi de8cf95231
ASoC: dmaengine: Use dma_request_chan() directly for channel request
dma_request_slave_channel_reason() is:
#define dma_request_slave_channel_reason(dev, name) \
	dma_request_chan(dev, name)

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191113095445.3211-2-peter.ujfalusi@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-11-15 12:02:58 +00:00
Kuninori Morimoto ece23171ea
ASoC: soc-generic-dmaengine-pcm: remove snd_pcm_ops
snd_pcm_ops is no longer needed.
Let's use component driver callback.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/875zl790cb.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-08 13:50:25 +01:00
Shengjiu Wang e957204e73
ASoC: pcm_dmaengine: Extract snd_dmaengine_pcm_refine_runtime_hwparams
When set the runtime hardware parameters, we may need to query
the capability of DMA to complete the parameters.

This patch is to Extract this operation from
dmaengine_pcm_set_runtime_hwparams function to a separate function
snd_dmaengine_pcm_refine_runtime_hwparams, that other components
which need this feature can call this function.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/d728f65194e9978cbec4132b522d4fed420d704a.1569493933.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01 12:18:25 +01:00
Peter Ujfalusi 48118a9323
ASoC: dmaengine: Replace strncpy() with strscpy_pad() for pcm->name
While it is safe to use strncpy in this case, the advice is to move to
strscpy or strscpy_pad.

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190911083331.16801-1-peter.ujfalusi@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-09-11 15:55:28 +01:00
Peter Ujfalusi 2ec42f3147
ASoC: dmaengine: Make the pcm->name equal to pcm->id if the name is not set
Some tools use the snd_pcm_info_get_name() to try to identify PCMs or for
other purposes.

Currently it is left empty with the dmaengine-pcm, in this case copy the
pcm->id string as pcm->name.

For example IGT is using this to find the HDMI PCM for testing audio on it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reported-by: Arthur She <arthur.she@linaro.org>
Link: https://lore.kernel.org/r/20190906055524.7393-1-peter.ujfalusi@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-09-09 10:47:10 +01:00
Takashi Iwai 70395a96bd ASoC: More changes for v5.1
Another batch of changes for ASoC, no big core changes - it's mainly
 small fixes and improvements for individual drivers.
 
  - A big refresh and cleanup of the Samsung drivers, fixing a number of
    issues which allow the driver to be used with a wider range of
    userspaces.
  - Fixes for the Intel drivers to make them more standard so less likely
    to get bitten by core issues.
  - New driver for Cirrus Logic CS35L26.
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Merge tag 'asoc-v5.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: More changes for v5.1

Another batch of changes for ASoC, no big core changes - it's mainly
small fixes and improvements for individual drivers.

 - A big refresh and cleanup of the Samsung drivers, fixing a number of
   issues which allow the driver to be used with a wider range of
   userspaces.
 - Fixes for the Intel drivers to make them more standard so less likely
   to get bitten by core issues.
 - New driver for Cirrus Logic CS35L26.
2019-02-28 13:30:55 +01:00
Sylwester Nawrocki 76d9c68b36
ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag
There is now no users of this flag so remove it together with
related code.  The chan_name field of snd_dmaengine_dai_dma_data
data structure is not removed as it is still in use by the PXA
platform.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-14 16:17:35 +00:00
Sylwester Nawrocki 10cbf3507b
ASoC: dmaengine: Extend use of chan_names provided in custom DMA config
There are currently two ways to specify custom DMA channel names:
 - through the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag and
   snd_dmaengine_dai_dma_data data structure,
 - through chan_names field of struct snd_dmaengine_pcm_config.

In order to replace the DAI DMA data method with the custom DMA config
one on non-DT platforms the dmaengine_pcm_new() function is extended
to also consider channel names specified in the custom DMA config.
If both config->chan_names and dma_data->chan_name are provided
the former will be used.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:31:42 +00:00
Sylwester Nawrocki 51256d348c
ASoC: dmaengine: Improve of_node test in dmaengine_pcm_request_chan_of()
Currently when of_node of the "PCM" device is null
dmaengine_pcm_request_chan_of() function will bail out, including cases
when custom DMA device is intended to be used.  To have the channels
properly requested when custom DMA device is provided extend the of_node
test to also consider dma_dev->of_node.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-12 16:29:29 +00:00
Takashi Iwai 6c42243663 ASoC: dmaengine: Drop superfluous PCM preallocation error checks
snd_pcm_lib_preallocate_pages() and co always succeed, so the error
check is simply redundant.  Drop it.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-02-06 18:29:49 +01:00
Linus Torvalds 13bf2cf9e2 DMAengine updates for v4.19-rc1
This round brings couple of framework changes, a new driver and usual driver
 updates:
  - New managed helper for dmaengine framework registration
  - Split dmaengine pause capability to pause and resume and allow drivers to
    report that individually
  - Update dma_request_chan_by_mask() to handle deferred probing
  - Move imx-sdma to use virt-dma
  - New driver for Actions Semi Owl family S900 controller
  - Minor updates to intel, renesas, mv_xor, pl330 etc
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Merge tag 'dmaengine-4.19-rc1' of git://git.infradead.org/users/vkoul/slave-dma

Pull DMAengine updates from Vinod Koul:
 "This round brings couple of framework changes, a new driver and usual
  driver updates:

   - new managed helper for dmaengine framework registration

   - split dmaengine pause capability to pause and resume and allow
     drivers to report that individually

   - update dma_request_chan_by_mask() to handle deferred probing

   - move imx-sdma to use virt-dma

   - new driver for Actions Semi Owl family S900 controller

   - minor updates to intel, renesas, mv_xor, pl330 etc"

* tag 'dmaengine-4.19-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits)
  dmaengine: Add Actions Semi Owl family S900 DMA driver
  dt-bindings: dmaengine: Add binding for Actions Semi Owl SoCs
  dmaengine: sh: rcar-dmac: Should not stop the DMAC by rcar_dmac_sync_tcr()
  dmaengine: mic_x100_dma: use the new helper to simplify the code
  dmaengine: add a new helper dmaenginem_async_device_register
  dmaengine: imx-sdma: add memcpy interface
  dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff'
  dmaengine: dma_request_chan_by_mask() to handle deferred probing
  dmaengine: pl330: fix irq race with terminate_all
  dmaengine: Revert "dmaengine: mv_xor_v2: enable COMPILE_TEST"
  dmaengine: mv_xor_v2: use {lower,upper}_32_bits to configure HW descriptor address
  dmaengine: mv_xor_v2: enable COMPILE_TEST
  dmaengine: mv_xor_v2: move unmap to before callback
  dmaengine: mv_xor_v2: convert callback to helper function
  dmaengine: mv_xor_v2: kill the tasklets upon exit
  dmaengine: mv_xor_v2: explicitly freeup irq
  dmaengine: sh: rcar-dmac: Add dma_pause operation
  dmaengine: sh: rcar-dmac: add a new function to clear CHCR.DE with barrier
  dmaengine: idma64: Support dmaengine_terminate_sync()
  dmaengine: hsu: Support dmaengine_terminate_sync()
  ...
2018-08-18 15:55:59 -07:00
Takashi Iwai 8adf3df415
ASoC: dmaengine: Use standard pcm_format_to_bits() macro
The conversion from PCM format type to bits needs an explicit cast,
and it'll be uglier.  Since we have a standard macro for that, let's
use it instead.

This patch fixes the sparse warning:
  sound/soc/soc-generic-dmaengine-pcm.c:200:63: warning: restricted snd_pcm_format_t degrades to integer

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-07-26 17:09:09 +01:00
Takashi Iwai 40d1299f87
ASoC: dmaengine: Fix missing __user prefix in copy_user callback
It seems that __user prefix was forgotten to be added to
dmaengine_copy_user callback while we refactored the user-copy PCM
core.

This patch adds the missing prefix, remove the superfluous cast, and
add the needed cast (__force is needed for downgrading from user
pointer to kernel pointer), too.

Spotted by a sparse warning like:
  sound/soc/soc-generic-dmaengine-pcm.c:397:27: warning: incorrect type in initializer (incompatible argument 4 (different address spaces))

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-07-26 15:48:20 +01:00
Marek Szyprowski d8095f94e1 dmaengine: add support for reporting pause and resume separately
'cmd_pause' DMA channel capability means that respective DMA engine
supports both pausing and resuming given DMA channel. However, in some
cases it is important to know if DMA channel can be paused without the
need to resume it. This is a typical requirement for proper residue
reading on transfer timeout in UART drivers. There are also some DMA
engines with limited hardware, which doesn't really support resuming.

Reporting pause and resume capabilities separately allows UART drivers to
properly check for the really required capabilities and operate in DMA
mode also in systems with limited DMA hardware. On the other hand drivers,
which rely on full channel suspend/resume support, should now check for
both 'pause' and 'resume' features.

Existing clients of dma_get_slave_caps() have been checked and the only
driver which rely on proper channel resuming is soc-generic-dmaengine-pcm
driver, which has been updated to check the newly added capability.
Existing 'cmd_pause' now only indicates that DMA engine support pausing
given DMA channel.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-07-09 22:59:04 +05:30
Kuninori Morimoto 1356a6071c
ASoC: soc-generic-dmaengine-pcm: convert to SPDX identifiers
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-07-02 10:55:52 +01:00
Fabio Estevam b84acf44d5
ASoC: Revert "ASoC: soc-generic-dmaengine-pcm: Fix error handling"
This reverts commit f91b1e73cc.

As explained by Lars-Peter Clausen:

"This creates a resource leak. dmaengine_pcm_request_chan_of() requests
bothtransmit and receive channels. It might return with an error if one
of them fails, but the other one succeeded. In this case we need to call
dmaengine_pcm_release_chan() to free the requested channel"

So revert the commit.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-26 19:59:31 +00:00
Olivier Moysan 78648092ef
ASoC: dmaengine_pcm: add processing support
Allow dmaengine client to optionally register a processing callback.
This callback is intended to apply processing
on samples in buffer copied from/to user space, before/after DMA transfer.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-26 11:11:20 +00:00
Fabio Estevam 7ed310bd51
ASoC: soc-generic-dmaengine-pcm: Fix sparse warnings
Currently the following sparse warnings are observed:

sound/soc/soc-generic-dmaengine-pcm.c:185:34: warning: restricted snd_pcm_format_t degrades to integer
sound/soc/soc-generic-dmaengine-pcm.c:186:66: warning: incorrect type in argument 1 (different base types)
sound/soc/soc-generic-dmaengine-pcm.c:186:66:    expected restricted snd_pcm_format_t [usertype] format
sound/soc/soc-generic-dmaengine-pcm.c:186:66:    got int [signed] [assigned] i

Fix it by changing the loop variable to be of 'snd_pcm_format_t'.

Also introduce a SNDRV_PCM_FORMAT_FIRST label, which corresponds to the
first member (index 0) of the snd_pcm_format_t formats.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-26 11:05:12 +00:00
Fabio Estevam f91b1e73cc
ASoC: soc-generic-dmaengine-pcm: Fix error handling
When dmaengine_pcm_request_chan_of() fails it should release
the previously acquired resources, which in this case is to
call kfree(pcm), so jump to the correct point in the error
path.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-26 11:05:11 +00:00
Mark Brown 4e36301012
Merge branch 'topic/component-platform' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into HEAD 2018-02-26 11:05:04 +00:00
Fabio Estevam f0b3bdbd5c
ASoC: soc-generic-dmaengine-pcm: Add a DMA debugfs_prefix entry
After the conversion from platform to component the following warnings
are seen:

fsl-ssi-dai 2028000.ssi: ASoC: Failed to create component debugfs
directory
fsl-spdif-dai 2004000.spdif: ASoC: Failed to create component debugfs
directory

As explained by Mark Brown:

"It's a legit warning - we shouldn't really be creating two components
for the same device.  However this is a bit of a corner case as it's the
dmaengine platform driver which is kind of a virtual device, it's not
really the device that we use with DMA that's being represented but
rather the link between that and the DMA controller."

Disambiguate the DMA component name by adding a "dma" debugfs_prefix
entry.

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-22 11:38:05 +00:00
Kuninori Morimoto be7ee5f32a
ASoC: soc-generic-dmaengine-pcm: replace platform to component
Now platform can be replaced to component, let's do it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-12 11:45:08 +00:00
Sylwester Nawrocki 9bfa24e909 ASoC: Revert "Drop SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag"
This reverts commit c6644119a3 and
restores the ability to specify DMA channel names per DAI dma_data.
Unfortunately the functionality removed in the patch being reverted
cannot be entirely replaced by specifying DMA channel names in struct
snd_dmaengine_pcm_config as that does not cover devices with more than
2 DMA channels.

Together with patch "ASoC: Revert "samsung: Remove unneeded
initialization of chan_name"" this fixes broken sound on the s3c24xx
SoC platforms.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-01-23 18:16:33 +00:00