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path: root/sound/soc/stm/stm32_sai_sub.c
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2021-12-20ASoC: stm: Use dev_err_probe() helperKuninori Morimoto1-17/+8
Use the dev_err_probe() helper, instead of open-coding the same operation. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/20211214020843.2225831-22-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-17ASoC: stm32: sai: increase channels_max limitOlivier Moysan1-2/+2
The SAI peripheral supports up to 16 channels in TDM mode (8L+8R). The driver currently supports TDM over two channels. Increase SAI DAI playback/record channels_max, to also allow up to 16 channels in TDM mode. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20211117110031.19345-1-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-17ASoC: stm32: sai: Use devm_platform_get_and_ioremap_resource()Yang Yingliang1-2/+1
Use devm_platform_get_and_ioremap_resource() to simplify code. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20210617043847.1113092-3-yangyingliang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-28ASoC: stm32: do not request a new clock consummer referenceJerome Brunet1-4/+1
This reverts commit 65d1cce726d4912793d0a84c55ecdb0ef5832130. There is problem with clk_hw_get_hw(). Using it pins the clock provider to itself, making it impossible to remove the module. Revert commit 65d1cce726d4 ("ASoC: stm32: properly get clk from the provider") until this gets sorted out. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Link: https://lore.kernel.org/r/20210428122632.46244-2-jbrunet@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-23ASoC: stm32: properly get clk from the providerJerome Brunet1-1/+4
Instead of using the clk embedded in the clk_hw (which is meant to go away), a clock provider which need to interact with its own clock should request clk reference through the clock provider API. Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Link: https://lore.kernel.org/r/20210421120512.413057-2-jbrunet@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-11ASoC: stm32: sai: add pm_runtime supportOlivier Moysan1-2/+8
Enable support of pm_runtime on STM32 SAI driver to allow SAI power state monitoring. pm_runtime_put_autosuspend() is called from ASoC framework on pcm device close. The pmdown_time delay is available in runtime context, and may be set in SAI driver to take into account shutdown delay on playback. However, this shutdown delay is already handled in the DAPMs of the audio codec linked to SAI CPU DAI. So, the choice is made, not to support this delay on CPU DAI side. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20200911081507.7276-1-olivier.moysan@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-23ASoC: stm: use asoc_substream_to_rtd()Kuninori Morimoto1-1/+1
Now we can use asoc_substream_to_rtd() macro, let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87pn8r0yus.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-17ASoC: stm32: sai: fix sai probeOlivier Moysan1-7/+5
pcm config must be set before snd_dmaengine_pcm_register() call. Fixes: 0d6defc7e0e4 ("ASoC: stm32: sai: manage rebind issue") Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20200417142122.10212-1-olivier.moysan@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-14soc/stm/stm32_sub_sai: Add missing '\n' in log messagesSebastian Fricke1-1/+1
Message logged by 'dev_xxx()' or 'pr_xxx()' should end with a '\n'. Fixes: 3e086ed("ASoC: stm32: add SAI drivers") Signed-off-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com> Link: https://lore.kernel.org/r/20200413042952.7675-1-sebastian.fricke.linux@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-06ASoC: stm32: sai: Add missing cleanupJulia Lawall1-1/+3
The commit 0d6defc7e0e4 ("ASoC: stm32: sai: manage rebind issue") converts some function calls to their non-devm equivalents. The appropriate cleanup code was added to the remove function, but not to the probe function. Add a call to snd_dmaengine_pcm_unregister to compensate for the call to snd_dmaengine_pcm_register in case of subsequent failure. Fixes: commit 0d6defc7e0e4 ("ASoC: stm32: sai: manage rebind issue") Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Acked-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/1586099028-5104-1-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-27ASoC: stm: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointerKuninori Morimoto1-1/+1
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/87a747ir4b.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-04Merge branch 'for-5.6' of ↵Mark Brown1-9/+11
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.7
2020-03-04ASoC: stm32: sai: manage rebind issueOlivier Moysan1-8/+10
The commit e894efef9ac7 ("ASoC: core: add support to card rebind") allows to rebind the sound card after a rebind of one of its component. With this commit, the sound card is actually rebound, but may be no more functional. The following problems have been seen with STM32 SAI driver. 1) DMA channel is not requested: With the sound card rebind the simplified call sequence is: stm32_sai_sub_probe snd_soc_register_component snd_soc_try_rebind_card snd_soc_instantiate_card devm_snd_dmaengine_pcm_register The problem occurs because the pcm must be registered, before snd_soc_instantiate_card() is called. Modify SAI driver, to change the call sequence as follows: stm32_sai_sub_probe devm_snd_dmaengine_pcm_register snd_soc_register_component snd_soc_try_rebind_card 2) DMA channel is not released: dma_release_channel() is not called when devm_dmaengine_pcm_release() is executed. This occurs because SND_DMAENGINE_PCM_DRV_NAME component, has already been released through devm_component_release(). devm_dmaengine_pcm_release() should be called before devm_component_release() to avoid this problem. Call snd_dmaengine_pcm_unregister() and snd_soc_unregister_component() explicitly from SAI driver, to have the right sequence. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Message-Id: <20200304102406.8093-1-olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-11ASoC: stm32: sai: improve error management on probe deferralOlivier Moysan1-3/+8
Do not print an error trace when deferring probe for SAI driver. Signed-off-by: Etienne Carriere <etienne.carriere@st.com> Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20200203100814.22944-5-olivier.moysan@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-10ASoC: stm32: sai: fix possible circular lockingOlivier Moysan1-54/+140
In current driver, locks can be taken as follows: - Register access: take a lock on regmap config and then on clock. - Master clock provider: take a lock on clock and then on regmap config. This can lead to the circular locking summarized below. Remove peripheral clock management through regmap framework, and manage peripheral clock in driver instead. On register access, lock on clock is taken first, which allows to avoid possible locking issue. [ 6696.561513] ====================================================== [ 6696.567670] WARNING: possible circular locking dependency detected [ 6696.573842] 4.19.49 #866 Not tainted [ 6696.577397] ------------------------------------------------------ [ 6696.583566] pulseaudio/6439 is trying to acquire lock: [ 6696.588697] 87b0a25b (enable_lock){..-.}, at: clk_enable_lock+0x64/0x128 [ 6696.595377] [ 6696.595377] but task is already holding lock: [ 6696.601197] d858f825 (stm32_sai_sub:1342:(sai->regmap_config)->lock){....} ... [ 6696.812513] Possible unsafe locking scenario: [ 6696.812513] [ 6696.818418] CPU0 CPU1 [ 6696.822935] ---- ---- [ 6696.827451] lock(stm32_sai_sub:1342:(sai->regmap_config)->lock); [ 6696.833618] lock(enable_lock); [ 6696.839350] lock(stm32_sai_sub:1342: (sai->regmap_config)->lock); [ 6696.848035] lock(enable_lock); Fixes: 03e78a242a15 ("ASoC: stm32: sai: add h7 support") Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20200109083254.478-1-olivier.moysan@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-11-05ASoC: stm32: sai: add restriction on mmap supportOlivier Moysan1-1/+11
Do not support mmap in S/PDIF mode. In S/PDIF mode the buffer has to be copied, to allow the channel status bits insertion. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20191104133654.28750-1-olivier.moysan@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-18ASoC: stm32: sai: fix sysclk management on shutdownOlivier Moysan1-10/+11
The commit below, adds a call to sysclk callback on shutdown. This introduces a regression in stm32 SAI driver, as some clock services are called twice, leading to unbalanced calls. Move processing related to mclk from shutdown to sysclk callback. When requested frequency is 0, assume shutdown and release mclk. Fixes: 2458adb8f92a ("SoC: simple-card-utils: set 0Hz to sysclk when shutdown") Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Link: https://lore.kernel.org/r/20191018082040.31022-1-olivier.moysan@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-26Merge tag 'v5.2-rc6' into asoc-5.3Mark Brown1-11/+1
Linux 5.2-rc6
2019-06-03ASoC: stm32: sai: manage identification registersOlivier Moysan1-6/+8
Add support of identification registers in STM32 SAI. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174Thomas Gleixner1-11/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-06Merge branch 'asoc-5.2' into asoc-nextMark Brown1-44/+44
2019-04-26ASoC: stm32: sai: simplify dai driver initialisationArnaud Pouliquen1-34/+9
Suppress the useless dynamic allocation of the dai driver structure. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-04-26Merge branch 'asoc-5.1' into asoc-5.2Mark Brown1-1/+1
2019-04-10ASoC: stm32: sai: fix master clock managementOlivier Moysan1-17/+47
When master clock is used, master clock rate is set exclusively. Parent clocks of master clock cannot be changed after a call to clk_set_rate_exclusive(). So the parent clock of SAI kernel clock must be set before. Ensure also that exclusive rate operations are balanced in STM32 SAI driver. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-04-08ASoC: stm32: fix sai driver name initialisationArnaud Pouliquen1-1/+1
This patch fixes the sai driver structure overwriting which results in a cpu dai name equal NULL. Fixes: 3e086ed ("ASoC: stm32: add SAI driver") Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-25ASoC: stm32: sai: add power managementOlivier Moysan1-10/+35
Add support of low power modes to STM32 SAI driver. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-04ASoC: stm32: sai: fix set_sync serviceOlivier Moysan1-3/+5
Add error check on set_sync function return. Add of_node_put() as of_get_parent() takes a reference which has to be released. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-04ASoC: stm32: sai: fix oversampling modeOlivier Moysan1-3/+9
Set OSR bit if mclk/fs ratio is 512. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-04ASoC: stm32: sai: fix race condition in irq handlerOlivier Moysan1-1/+12
When snd_pcm_stop_xrun() is called in interrupt routine, substream context may have already been released. Add protection on substream context. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-04ASoC: stm32: sai: fix exposed capabilities in spdif modeOlivier Moysan1-0/+8
Change capabilities exposed in SAI S/PDIF mode, to match actually supported formats. In S/PDIF mode only 32 bits stereo is supported. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-04ASoC: stm32: sai: fix iec958 controls indexationOlivier Moysan1-3/+4
Allow indexation of sai iec958 controls according to device id. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-18ASoC: stm32: sai: remove set but not used variables 'mask, cr1'YueHaibing1-5/+3
Fixes gcc '-Wunused-but-set-variable' warning: sound/soc/stm/stm32_sai_sub.c: In function 'stm32_sai_configure_clock': sound/soc/stm/stm32_sai_sub.c:902:11: warning: variable 'mask' set but not used [-Wunused-but-set-variable] sound/soc/stm/stm32_sai_sub.c:902:6: warning: variable 'cr1' set but not used [-Wunused-but-set-variable] It's not used any more after 8307b2afd386 ("ASoC: stm32: sai: set sai as mclk clock provider") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-14ASoC: stm32: sai: fix invalid use of sizeof in stm32_sai_add_mclk_provider()Wei Yongjun1-1/+1
sizeof() when applied to a pointer typed expression gives the size of the pointer, not that of the pointed data. Fixes: 8307b2afd386 ("ASoC: stm32: sai: set sai as mclk clock provider") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-05ASoC: stm32: sai: fix less than zero comparison on unsigned intColin Ian King1-2/+1
Currently, the comparison of div < 0 is always false because div is an unsigned int. Fix this by making div an int. Detected by CoverityScan, CID#1475309 ("Unsigned compared against 0") Fixes: 8307b2afd386 "(ASoC: stm32: sai: set sai as mclk clock provider") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-23ASoC: stm32: sai: fix master clock namingOlivier Moysan1-3/+2
Fixes: 8307b2afd386 ("ASoC: stm32: sai: set sai as mclk clock provider") Fix warning issued by strncat when bound equals to source length. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-19ASoC: stm32: sai: set sai as mclk clock providerOlivier Moysan1-36/+239
Add master clock generation support in STM32 SAI. The master clock provided by SAI can be used to feed a codec. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-08-28ASoC: Convert to using %pOFn instead of device_node.nameRob Herring1-4/+3
In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-07-04ASoC: stm32: Use snd_pcm_stop_xrun() helperTakashi Iwai1-5/+2
The XRUN trigger from the driver should be done via snd_pcm_stop_xrun(). It simplifies the locking as well. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-06-18ASoC: stm32: sai: add iec958 controls supportolivier moysan1-12/+127
Add support of iec958 controls for STM32 SAI. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-26ASoC: stm32: sai: Add support of S/PDIF playbackOlivier Moysan1-24/+129
Add support of S/PDIF iec60958 playback on STM32 SAI. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-02ASoC: stm32: sai: fix warning in stm32_sai_set_config()olivier moysan1-3/+3
Fix uninitialized warning introduced by "Move static settings to DAI init" commit in stm32_sai_set_config() function. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-21ASoC: stm32: sai: Add synchronization supportOlivier Moysan1-0/+95
Add Synchronization support for STM32 SAI. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-21ASoC: stm32: sai: Remove spurious IRQs on stopOlivier Moysan1-2/+3
Clear IRQ mask on stream stop to avoid spurious IRQs. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-21ASoC: stm32: sai: Move static settings to DAI initOlivier Moysan1-10/+13
Audio interface direction and protocol settings does not change at runtime. So, these settings are moved from hw_params function to dai_probe and set_fmt. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-21ASoC: stm32: sai: Fix DMA burst sizeOlivier Moysan1-8/+13
Set best burst size tradeoff for 8, 16, 32 bits transfers. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-21ASoC: stm32: sai: fix stop management in isrOlivier Moysan1-4/+8
Add check on substream validity. Signed-off-by: Olivier Moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-06-28ASoC: stm32: sai: remove some stray tabsDan Carpenter1-1/+1
This line was accidentally indented too far. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-06-16ASoC: stm32: sai: add h7 supportolivier moysan1-15/+77
Add support of SAI on STM32H7 family. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-06-16ASoC: stm32: sai: manage master clockolivier moysan1-0/+14
Disable master clock by default, and activate it only when requested. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-06-16ASoC: stm32: sai: fix clock managementolivier moysan1-2/+2
Allow peripheral clock enable/disable on regmap accesses. Signed-off-by: olivier moysan <olivier.moysan@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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