Commit Graph

12 Commits

Author SHA1 Message Date
Maxim Kochetkov
8e45fb70f4 ASoC: dwc: move DMA init to snd_soc_dai_driver probe()
[ Upstream commit 011a8719d6105dcb48077ea7a6a88ac019d4aa50 ]

When using DMA mode we are facing with Oops:
[  396.458157] Unable to handle kernel access to user memory without uaccess routines at virtual address 000000000000000c
[  396.469374] Oops [#1]
[  396.471839] Modules linked in:
[  396.475144] CPU: 0 PID: 114 Comm: arecord Not tainted 6.0.0-00164-g9a8eccdaf2be-dirty #68
[  396.483619] Hardware name: YMP ELCT FPGA (DT)
[  396.488156] epc : dmaengine_pcm_open+0x1d2/0x342
[  396.493227]  ra : dmaengine_pcm_open+0x1d2/0x342
[  396.498140] epc : ffffffff807fe346 ra : ffffffff807fe346 sp : ffffffc804e138f0
[  396.505602]  gp : ffffffff817bf730 tp : ffffffd8042c8ac0 t0 : 6500000000000000
[  396.513045]  t1 : 0000000000000064 t2 : 656e69676e65616d s0 : ffffffc804e13990
[  396.520477]  s1 : ffffffd801b86a18 a0 : 0000000000000026 a1 : ffffffff816920f8
[  396.527897]  a2 : 0000000000000010 a3 : fffffffffffffffe a4 : 0000000000000000
[  396.535319]  a5 : 0000000000000000 a6 : ffffffd801b87040 a7 : 0000000000000038
[  396.542740]  s2 : ffffffd801b94a00 s3 : 0000000000000000 s4 : ffffffd80427f5e8
[  396.550153]  s5 : ffffffd80427f5e8 s6 : ffffffd801b44410 s7 : fffffffffffffff5
[  396.557569]  s8 : 0000000000000800 s9 : 0000000000000001 s10: ffffffff8066d254
[  396.564978]  s11: ffffffd8059cf768 t3 : ffffffff817d5577 t4 : ffffffff817d5577
[  396.572391]  t5 : ffffffff817d5578 t6 : ffffffc804e136e8
[  396.577876] status: 0000000200000120 badaddr: 000000000000000c cause: 000000000000000d
[  396.586007] [<ffffffff806839f4>] snd_soc_component_open+0x1a/0x68
[  396.592439] [<ffffffff807fdd62>] __soc_pcm_open+0xf0/0x502
[  396.598217] [<ffffffff80685d86>] soc_pcm_open+0x2e/0x4e
[  396.603741] [<ffffffff8066cea4>] snd_pcm_open_substream+0x442/0x68e
[  396.610313] [<ffffffff8066d1ea>] snd_pcm_open+0xfa/0x212
[  396.615868] [<ffffffff8066d39c>] snd_pcm_capture_open+0x3a/0x60
[  396.622048] [<ffffffff8065b35a>] snd_open+0xa8/0x17a
[  396.627421] [<ffffffff801ae036>] chrdev_open+0xa0/0x218
[  396.632893] [<ffffffff801a5a28>] do_dentry_open+0x17c/0x2a6
[  396.638713] [<ffffffff801a6d9a>] vfs_open+0x1e/0x26
[  396.643850] [<ffffffff801b8544>] path_openat+0x96e/0xc96
[  396.649518] [<ffffffff801b9390>] do_filp_open+0x7c/0xf6
[  396.655034] [<ffffffff801a6ff2>] do_sys_openat2+0x8a/0x11e
[  396.660765] [<ffffffff801a735a>] sys_openat+0x50/0x7c
[  396.666068] [<ffffffff80003aca>] ret_from_syscall+0x0/0x2
[  396.674964] ---[ end trace 0000000000000000 ]---

It happens because of play_dma_data/capture_dma_data pointers are NULL.
Current implementation assigns these pointers at snd_soc_dai_driver
startup() callback and reset them back to NULL at shutdown(). But
soc_pcm_open() sequence uses DMA pointers in dmaengine_pcm_open()
before snd_soc_dai_driver startup().
Most generic DMA capable I2S drivers use snd_soc_dai_driver probe()
callback to init DMA pointers only once at probe. So move DMA init
to dw_i2s_dai_probe and drop shutdown() and startup() callbacks.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Link: https://lore.kernel.org/r/20230512110343.66664-1-fido_max@inbox.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-21 15:45:36 +02:00
Maxim Kochetkov
5ee83fef0c ASoC: dwc: limit the number of overrun messages
[ Upstream commit ab6ecfbf40fccf74b6ec2ba7ed6dd2fc024c3af2 ]

On slow CPU (FPGA/QEMU emulated) printing overrun messages from
interrupt handler to uart console may leads to more overrun errors.
So use dev_err_ratelimited to limit the number of error messages.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru
Link: https://lore.kernel.org/r/20230505062820.21840-1-fido_max@inbox.ru
Signed-off-by: Mark Brown <broonie@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-09 10:30:09 +02:00
Jiasheng Jiang
a6ee60d4a9 ASoC: dwc-i2s: Handle errors for clk_enable
[ Upstream commit 45ea97d74313bae681328b0c36fa348036777644 ]

As the potential failure of the clk_enable(),
it should be better to check it, as same as clk_prepare_enable().

Fixes: c9afc1834e ("ASoC: dwc: Disallow building designware_pcm as a module")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220301084742.3751939-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-08 14:40:09 +02:00
Kuninori Morimoto
8db4f94fb3 ASoC: dwc: use snd_soc_xxx_active()
We have snd_soc_dai/dai_stream/component_active() macro
This patch uses it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/87k11e58hu.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-18 16:15:15 +01:00
Kuninori Morimoto
0a170be963 ASoC: dwc: dwc-i2s: 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/87y2t1aa8t.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-18 23:37:09 +00:00
Kuninori Morimoto
0f6011fd79 ASoC: soc-pcm: merge playback/cature_active into stream_active
DAI has playback_active and capture_active to care usage count.
OTOH, we have SNDRV_PCM_STREAM_PLAYBACK/CAPTURE.
But because of this kind of implementation mismatch,
ALSA SoC has many verbose code.

To solve this issue, this patch merge playback_active/capture_active
into stream_active[2];

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/875zg5botu.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-18 23:37:05 +00:00
Kuninori Morimoto
ef20061a34 ASoC: dwc: dwc-i2s: move .suspend/.resume to component
There is no big difference at implementation for .suspend/.resume
between DAI driver and Component driver.
But because some driver is using DAI version, thus ALSA SoC needs
to keep supporting it, hence, framework becoming verbose.
If we can switch all DAI driver .suspend/.resume to Component driver,
we can remove verbose code from ALSA SoC.

Driver is getting its private data via dai->dev.
But dai->dev and component->dev are same dev, thus, we can convert
these. For same reason, we can convert dai->active to
component->active if necessary.

This patch moves DAI driver .suspend/.resume to Component driver

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87y2u3x7iy.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-21 17:05:35 +00:00
Akshu Agrawal
97a865d3c3 ASoC: dwc: Extends DW_I2S_QUIRK_COMP_PARAM1 to playback
When we have same register to tell capture and playback capability
of a device and we want separate cpu dais for playback and
capture. Then, DW_I2S_QUIRK_COMP_PARAM1 is used to enable one
capability per dai.

Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-16 16:15:37 +00:00
Markus Elfring
b88845484d ASoC: dwc: Delete an error message for a failed memory allocation in dw_i2s_probe()
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-08-14 17:28:51 +01:00
Gustavo A. R. Silva
73a995ca90 ASoC: dwc: constify snd_soc_dai_ops structure
This structure is only stored in the ops field of a snd_soc_dai_driver
structure. That field is declared const, so snd_soc_dai_ops structures
that have this property can be declared as const also.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-07-17 16:54:30 +01:00
Vijendar Mukunda
286345eef9 ASoC: dwc: Added a quirk DW_I2S_QUIRK_16BIT_IDX_OVERRIDE to dwc driver
Added quirk DW_I2S_QUIRK_16BIT_IDX_OVERRIDE to Designware
driver. This quirk will set idx value to 1.

By setting this quirk, it will override supported format
as 16 bit resolution and bus width as 2 Bytes.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-06-28 19:01:12 +01:00
Jose Abreu
c9afc1834e ASoC: dwc: Disallow building designware_pcm as a module
Designware PCM is an extension to Designware I2S and they are dependent
on each other. For this reason, make Designware PCM a boolean which will
compile with Desigwnare I2S module. The name of the module is not changed
but the name of the files need to be changed.

Also, without this commit we get errors when probbing designware_i2s module
because of unspecified license:

designware_pcm: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
designware_pcm: Unknown symbol __rcu_read_lock (err 0)
designware_pcm: Unknown symbol devm_snd_soc_register_platform (err 0)
designware_pcm: Unknown symbol synchronize_rcu (err 0)
designware_pcm: Unknown symbol __rcu_read_unlock (err 0)
designware_pcm: Unknown symbol snd_soc_set_runtime_hwparams (err 0)

So, this is really needed as a fix.

Fixes: 79361b2b98 ("ASoC: dwc: Add PIO PCM extension")
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-04-30 20:27:04 +08:00