Commit graph

1176 commits

Author SHA1 Message Date
Kuninori Morimoto
2ce1b21cb3
ASoC: rsnd: fixup DMAEngine API
commit d5bb69dc54 ("ASoC: sh: rcar: dma: : use proper DMAENGINE
API for termination") updated DMAEngine API _all() to _sync(),
but it should be _async().
_all() and _async() are almost same, the difference is only return
error code. _sync() will call dmaengine_synchronize() and will be
kernel panic.
This patch is needed for v5.15 or later.

[   27.293264] BUG: scheduling while atomic: irq/130-ec70000/131/0x00000003
[   27.300084] 2 locks held by irq/130-ec70000/131:
[   27.304743]  #0: ffff0004c274d908 (&group->lock){....}-{2:2}, at: _snd_pcm_stream_lock_irqsave+0x48/0x54
[   27.314344]  #1: ffff0004c1788c60 (&priv->lock#2){....}-{2:2}, at: rsnd_soc_dai_trigger+0x70/0x7bc
[   27.323409] irq event stamp: 206
[   27.326664] hardirqs last  enabled at (205): [<ffff80001082de50>] _raw_spin_unlock_irq+0x50/0xa0
[   27.335529] hardirqs last disabled at (206): [<ffff80001082d9e4>] _raw_spin_lock_irqsave+0xc4/0xd0
[   27.344564] softirqs last  enabled at (0): [<ffff800010037324>] copy_process+0x644/0x1b10
[   27.352819] softirqs last disabled at (0): [<0000000000000000>] 0x0
[   27.359142] CPU: 0 PID: 131 Comm: irq/130-ec70000 Not tainted 5.14.0-rc1+ #918
[   27.366429] Hardware name: Renesas H3ULCB Kingfisher board based on r8a77950 (DT)
[   27.373975] Call trace:
[   27.376442]  dump_backtrace+0x0/0x1b4
[   27.380141]  show_stack+0x24/0x30
[   27.383488]  dump_stack_lvl+0x8c/0xb8
[   27.387184]  dump_stack+0x18/0x34
[   27.390528]  __schedule_bug+0x8c/0x9c
[   27.394224]  __schedule+0x790/0x8dc
[   27.397746]  schedule+0x7c/0x110
[   27.401003]  synchronize_irq+0x94/0xd0
[   27.404786]  rcar_dmac_device_synchronize+0x20/0x2c
[   27.409710]  rsnd_dmaen_stop+0x50/0x64
[   27.413495]  rsnd_soc_dai_trigger+0x554/0x7bc
[   27.417890]  snd_soc_pcm_dai_trigger+0xe8/0x264

Cc: <stable@kernel.org>
Fixes: commit d5bb69dc54 ("ASoC: sh: rcar: dma: : use proper DMAENGINE API for termination")
Link: https://lore.kernel.org/r/TY2PR01MB3692889E1A7476C4322CC296D8AE9@TY2PR01MB3692.jpnprd01.prod.outlook.com
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87mtmfz36o.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-11-12 21:25:19 +00:00
Christophe JAILLET
173632358f
ASoC: rsnd: Fix an error handling path in 'rsnd_node_count()'
If we return before the end of the 'for_each_child_of_node()' iterator, the
reference taken on 'np' must be released.

Add the missing 'of_node_put()' call.

Fixes: c413983eb6 ("ASoC: rsnd: adjust disabled module")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/4c0e893cbfa21dc76c1ede0b6f4f8cff42209299.1634586167.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-10-29 18:55:25 +01:00
Kuninori Morimoto
cc64c390b2
ASoC: rsnd: adg: clearly handle clock error / NULL case
This driver is assuming that all adg->clk[i] is not NULL.
Because of this prerequisites, for_each_rsnd_clk() is possible to work
for all clk without checking NULL. In other words, all adg->clk[i]
should not NULL.

Some SoC might doesn't have clk_a/b/c/i. devm_clk_get() returns error in
such case. This driver calls rsnd_adg_null_clk_get() and use null_clk
instead of NULL in such cases.

But devm_clk_get() might returns NULL even though such clocks exist, but
it doesn't mean error (user deliberately chose to disable the feature).
NULL clk itself is not error from clk point of view, but is error from
this driver point of view because it is not assuming such case.

But current code is using IS_ERR() which doesn't care NULL.
This driver uses IS_ERR_OR_NULL() instead of IS_ERR() for clk check.
And it uses ERR_CAST() to clarify null_clk error.

One concern here is that it unconditionally uses null_clk if clk_a/b/c/i
was error. It is correct if it doesn't exist, but is not correct if it
returns error even though it exist.
It needs to check "clock-names" from DT before calling devm_clk_get() to
handling such case. But let's assume it is overkill so far.

Link: https://lore.kernel.org/r/YMCmhfQUimHCSH/n@mwanda
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87v940wyf9.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-20 13:07:26 +01:00
Kuninori Morimoto
28889de643
ASoC: rsnd: core: make some arrays static const, makes object smaller
Don't populate arrays on the stack but instead them static const.
Makes the object code smaller by 48 bytes.

Before:
   text    data     bss     dec     hex filename
  20938     916     104   21958    55c6 ./sound/soc/sh/rcar/core.o

After:
   text    data     bss     dec     hex filename
  20890     916     104   21910    5596 ./sound/soc/sh/rcar/core.o

gcc version 11.1.0)

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87tujkwydx.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-20 13:07:25 +01:00
Biju Das
4b14f17912
ASoC: sh: rz-ssi: Improve error handling in rz_ssi_dma_request function
dma_request_chan() returns error pointer in case of failures, but
the rz_ssi_dma_request() checked for NULL pointer instead.

This patch fixes the issue by checking for ERR_PTR() instead of
NULL and sets the DMA pointers to NULL in error case so that ssi
can fallback to PIO mode.

Fixes: 26ac471c53 ("ASoC: sh: rz-ssi: Add SSI DMAC support")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210818101450.15948-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-19 18:21:22 +01:00
Biju Das
1b5d1d3a2f
ASoC: sh: rz-ssi: Fix wrong operator used issue
Fix wrong operator used issue reported by Coverity by replacing |
operator with & operator.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reported-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210816182336.29959-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-17 13:35:01 +01:00
Biju Das
d40dfb860a
ASoC: sh: rz-ssi: Fix dereference of noderef expression warning
Fix following sparse warning:
sound/soc/sh/rz-ssi.c:156:15: sparse: warning: dereference of
noderef expression

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20210816132049.28128-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-16 16:36:49 +01:00
Biju Das
26ac471c53
ASoC: sh: rz-ssi: Add SSI DMAC support
Add SSI DMAC support to RZ/G2L SoC.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210813091156.10700-4-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-13 13:17:18 +01:00
Biju Das
03e786bd43
ASoC: sh: Add RZ/G2L SSIF-2 driver
Add serial sound interface(SSIF-2) driver support for
RZ/G2L SoC.

Based on the work done by Chris Brandt for RZ/A SSI driver.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210813091156.10700-2-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-13 13:17:16 +01:00
Colin Ian King
6dfeb70276
ASoC: rsnd: make some arrays static const, makes object smaller
Don't populate arrays on the stack but instead them static const.
Makes the object code smaller by 242 bytes.

Before:
   text    data     bss     dec     hex filename
  23827    8764       0   32591    7f4f ./sound/soc/sh/rcar/ssi.o

After:
   text    data     bss     dec     hex filename
  23361    8988       0   32349    7e5d ./sound/soc/sh/rcar/ssi.o

gcc version 10.2.0)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210801063237.137998-1-colin.king@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-02 12:14:05 +01:00
Wolfram Sang
d5bb69dc54
ASoC: sh: rcar: dma: : use proper DMAENGINE API for termination
dmaengine_terminate_all() is deprecated in favor of explicitly saying if
it should be sync or async. Here, we want dmaengine_terminate_sync()
because there is no other synchronization code in the driver to handle
an async case.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20210623100545.3926-1-wsa+renesas@sang-engineering.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-07-11 23:48:38 +01:00
Flavio Suligoi
eb1e9b8f58
ASoC: fsi: fix spelling mistake
Fix "thse" --> "these" in struct fsi_stream declaration.

Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Link: https://lore.kernel.org/r/20210618085324.1038524-1-f.suligoi@asem.it
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-18 12:55:19 +01:00
Kuninori Morimoto
af69f47df1
ASoC: fsi: add .auto_selectable_formats support
By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87bl8wnc5x.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-07 15:55:16 +01:00
Kuninori Morimoto
0292176522
ASoC: rsnd: add .auto_selectable_formats support
By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87cztcnc6k.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-07 15:55:15 +01:00
Mark Brown
f3b3bceb85
Merge series "ASoC: rsnd: tidyup adg and header" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:
Hi Mark

I noticed that adg can be more clean code.
And rsnd.h header comment was not so good
because patch has been randomly added.

This patch tidyup these.

Kuninori Morimoto (5):
  ASoC: rsnd: adg: supply __printf(x, y) formatting for dbg_msg()
  ASoC: rsnd: adg: tidyup rsnd_adg_get_clkin/out() parameter
  ASoC: rsnd: adg: use more simple method for null_clk
  ASoC: rsnd: adg: check return value for rsnd_adg_get_clkin/out()
  ASoC: rsnd: tidyup __rsnd_mod_xxx macro comments

 sound/soc/sh/rcar/adg.c  | 139 +++++++++++++++++++++++++--------------
 sound/soc/sh/rcar/rsnd.h |  21 ++----
 2 files changed, 97 insertions(+), 63 deletions(-)

--
2.25.1
2021-06-03 19:36:04 +01:00
Colin Ian King
d66e033910
ASoC: rsnd: check for zero node count
Most callers of_get_child_count() check that "nr" is non-zero so it
causes a static checker warning when we don't do that here.  This
does not cause a problem or a crash, but having zero SSUIes does not
make sense either so let's add a check.

Addresses-Coverity: ("Unchecked return value")
Fixes: c413983eb6 ("ASoC: rsnd: adjust disabled module")
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210603110315.81146-1-colin.king@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-03 13:59:59 +01:00
Kuninori Morimoto
3f4593fb4a
ASoC: rsnd: tidyup __rsnd_mod_xxx macro comments
status and __rsnd_mod_xxx were updated, but some related comments were
not. And it has verbose comments. This patch cleanup/tidyup these.

1) adds missing "D" to status sample
2) remove verbose list for "H"
3) add "needs protect" to __rsnd_mod_call_xxx

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87o8cpi1zs.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-03 13:56:42 +01:00
Kuninori Morimoto
d668a5e240
ASoC: rsnd: adg: check return value for rsnd_adg_get_clkin/out()
Current rsnd_adg_get_clkin/out() are void function,
thus adg->clk/clkout[i] might be NULL.

But, for_each_rsnd_clk/clkout() macros are assuming
all clks are non NULL.

Because of this mismatch, code can be complex and/or buggy.
These functions return error by this patch,
and make sure all clks are non NULL.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pmx5i20m.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-03 13:56:41 +01:00
Kuninori Morimoto
cb2f97d89f
ASoC: rsnd: adg: use more simple method for null_clk
commit 965386c976 ("ASoC: rsnd: call unregister for null_hw when
removed") tried unregister null_clk, but it has some issues.

1st issue is kernel will indicate below message when unregistering,
because of its timing. unregistering should be happen after clk_disable().

	clk_unregister: unregistering prepared clock: rsnd_adg_null

2nd issue is, it is using priv->null_clk, but it should be adg->null_clk.

3rd issue is it is using very complex clk registering method.
more simple clk_register/unregister_fixed_rate() should be OK.

This patch fixes these.

Fixes: 965386c976 ("ASoC: rsnd: call unregister for null_hw when removed")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87r1hli215.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-03 13:56:40 +01:00
Kuninori Morimoto
b48e4aa489
ASoC: rsnd: adg: tidyup rsnd_adg_get_clkin/out() parameter
set priv->adg before rsnd_adg_get_clkin/out() to be more simple code.
Nothing is changed, but is preparation for
next "ASoC: rsnd: adg: use more simple method for null_clk" patch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87sg21i21j.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-03 13:56:39 +01:00
Kuninori Morimoto
2cdfe6520c
ASoC: rsnd: adg: supply __printf(x, y) formatting for dbg_msg()
Fixes the following W=1 kernel build warning(s):

sound/soc/sh/rcar/adg.c: In function 'dbg_msg':
sound/soc/sh/rcar/adg.c:594:2: warning: function 'dbg_msg' might \
 be a candidate for 'gnu_printf' format attribute\
 [-Wsuggest-attribute=format]

Fixes: 1f9c82b5ab ("ASoC: rsnd: add debugfs support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87tumhi21r.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-03 13:56:38 +01:00
Kuninori Morimoto
c413983eb6
ASoC: rsnd: adjust disabled module
In general Renesas SoC's SSI/SRC are all enabled, but some SoC is not.

	H2	E2

	SRC0	      <=
	SRC1	SRC1
	SRC2	SRC2
	...	...

Renesas Sound driver is assuming that *all* modules are
enabled, and thus it is using *data array* to access each modules.
Because of it, we have been using "status = disabled" at DT,
and using *full size* array but avoiding disabled module.

ex)
	rcar_sound,src {
		src-0 {
=>			status = "disabled";
		};
		src1: src-1 {
			...
		};
		...

But R-Car D3 have many disabled modules (It has SSI3/SSI4, SRC5/SRC6),
and Renesas SoC maintainer don't want above style on DT.

ex)
	rcar_sound,src {
=>		src0: src-0 { status = "disabled"; };
=>		src1: src-1 { status = "disabled"; };
=>		src2: src-2 { status = "disabled"; };
=>		src3: src-3 { status = "disabled"; };
=>		src4: src-4 { status = "disabled"; };
		src5: src-5 {
			...
		};
		src6: src-6 {
			...
		};
	};

	rcar_sound,ssi {
=>		ssi0: ssi-0 { status = "disabled"; };
=>		ssi1: ssi-1 { status = "disabled"; };
=>		ssi2: ssi-2 { status = "disabled"; };
		ssi3: ssi-3 {
			...
		};
		ssi4: ssi-4 {
			...
		};
	};

To adjust it, it needs to care about related for_each_child_of_node()
loop on rsnd driver, and it is used from...

	> grep -l for_each_child_of_node sound/soc/sh/rcar/*
	sound/soc/sh/rcar/core.c
	sound/soc/sh/rcar/ctu.c
	sound/soc/sh/rcar/dma.c
	sound/soc/sh/rcar/dvc.c
	sound/soc/sh/rcar/mix.c
	sound/soc/sh/rcar/src.c
	sound/soc/sh/rcar/ssi.c
	sound/soc/sh/rcar/ssiu.c

This patch adjust to this situation.
By this patch, we can avoid disabled modules on DT

	rcar_sound,src {
		src5: src-5 {
			...
		};
		src6: src-6 {
			...
		};
	};

	rcar_sound,ssi {
		ssi3: ssi-3 {
			...
		};
		ssi4: ssi-4 {
			...
		};
	};

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/875yyzk017.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-01 14:04:15 +01:00
Kuninori Morimoto
73919dbe48
ASoC: rsnd: tidyup rsnd_parse_connect_xxx()
This patch tidyup rsnd_parse_connect_xxx() style.
Nothing is changed, but is preparation for
next "ASoC: rsnd: adjust disabled module" patch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/877djfk01l.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-01 14:04:15 +01:00
Kuninori Morimoto
039f2ccc64
ASoC: rsnd: tidyup rsnd_dma_request_channel()
This patch adds "char *name" to rsnd_dma_request_channel().
It is not yet used so far, but is preparation for
next "ASoC: rsnd: adjust disabled module" patch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/878s3vk01q.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-01 14:04:14 +01:00
Kuninori Morimoto
ec02b5a1d1
ASoC: rsnd: tidyup rsnd_parse_connect_common()
This patch adds "char *name" to rsnd_parse_connect_common().
It is not yet used so far, but is preparation for
next "ASoC: rsnd: adjust disabled module" patch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87a6obk01v.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-01 14:04:13 +01:00
Kuninori Morimoto
0ab000e5e5
ASoC: rsnd: tidyup rsnd_ssiu_busif_err_irq_ctrl()
rsnd_ssiu_busif_err_irq_ctrl() has very similar duplicated code.
This patch merge and tidyup the code.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <87sg28lwxw.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:34 +01:00
Kuninori Morimoto
cfb7b8bf1e
ASoC: rsnd: tidyup rsnd_ssiu_busif_err_status_clear()
rsnd_ssiu_busif_err_status_clear() has very similar duplicated code.
This patch merge and tidyup the code.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <87tumolwy3.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:33 +01:00
Kuninori Morimoto
83b220cf8e
ASoC: rsnd: implement BUSIF related code in ssiu.c
BUSIF is SSIU feature, but its related code is
implemented at ssi.c today.
This patch moves it to ssiu.c

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <87v974lwy9.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:32 +01:00
Kuninori Morimoto
b43b8ae87c
ASoC: rsnd: protect mod->status
Renesas Sound uses many modules (SSI/SSIU/SRC/CTU/MIX/DVC/DMA),
and supports complex connections/path.
Thus each modules needs to save its status to correctly control it.
This status is updated when by .trigger, and .hw_params/.hw_free.

Renesas Sound is protecting modules by using lock when .trigger,
but it was not enough to protecting each modules "status" if it was
used from many paths.

1) .hw_params/.hw_free update status
2) another doesn't update status, but overwrites by same value

This patch do
1) protects .hw_params/.hw_free by lock
2) do nothing if no status update

Without this patch, protected mod->status (= .trigger) might be
overwrote by non protected mod->status (= .hw_params / .hw_free),
and in such case, CTU/MIX/DVC/SSIU/SSI which are used from
many paths might get damage.

If above issue happens, Renesas Sound will be hung (= silence)
and never be recoverd.
I could reproduce this issue by continue playing very short sound
with loop very long term (3-4 hours) through 2 inputs (= MIXer).

For updating rsnd_status_update(), this patch removes rsnd_dai_call()
debug message. Because we already have debugfs support, and is not
good match to new code.

Reported-by: Linh Phung T. Y <linh.phung.jy@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <87wnrklwyh.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:31 +01:00
Kuninori Morimoto
1f9c82b5ab
ASoC: rsnd: add debugfs support
Current rsnd supports #define DEBUG, but it is not helpful
if issue happen after 4-5 hours.
This patch adds debugfs support for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <87y2c0lwyn.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:31 +01:00
Kuninori Morimoto
1788a15201
ASoC: rsnd: incidate irq error message
Current rsnd is using dev_dbg() if irq error happen,
but it makes debug very difficult if some strange things happen.
This patch uses dev_info() for it, and rename the macro name.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <87zgwglwyv.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:30 +01:00
Kuninori Morimoto
9ff07d19fb
ASoC: rsnd: indicate unknown error at rsnd_dai_call()
Current rsnd_dai_call() doesn't indicate error message,
thus it is very difficult to know the issue
when strange things happen.
This patch indicates error for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <871r9snbji.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:29 +01:00
Kuninori Morimoto
54e81e9446
ASoC: rsnd: check BUIF error everytime
Current ssi.c checks BUSIF when TDM mode, but it should be checked
everytime.
This patch do it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <8735u8nbjr.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:28 +01:00
Kuninori Morimoto
ab62e8a8bc
ASoC: rsnd: attach SSIU when SSI was DMA mode
SSIU is not needed if SSI was PIO mode.
This patch ignores such case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <874keonbkg.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:27 +01:00
Kuninori Morimoto
6da8f00e7a
ASoC: rsnd: ignore runtime NULL case at rsnd_runtime_channel_original_with_params()
runtime might be NULL. Let's ignore such case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <875yz4nbkt.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:26 +01:00
Kuninori Morimoto
965386c976
ASoC: rsnd: call unregister for null_hw when removed
commit d6956a7dde ("ASoC: rsnd: add null CLOCKIN support")
added null_clk, but it is using local static valuable.
It will be leaked if rsnd driver was removed.
This patch moves it to priv, and call unregister when removing.

Fixes: d6956a7dde ("ASoC: rsnd: add null CLOCKIN support")
Link: https://lore.kernel.org/r/87tumsoe2p.wl-kuninori.morimoto.gx@renesas.com
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Message-Id: <877djknbl5.wl-kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-27 11:15:26 +01:00
Kuninori Morimoto
d6956a7dde
ASoC: rsnd: add null CLOCKIN support
Some Renesas SoC doesn't have full CLOCKIN.
This patch add null_clk, and accepts it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87tumsoe2p.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-24 09:51:26 +01:00
Kuninori Morimoto
cf9d5c6619
ASoC: rsnd: tidyup loop on rsnd_adg_clk_query()
commit 06e8f5c842 ("ASoC: rsnd: don't call clk_get_rate() under
atomic context") used saved clk_rate, thus for_each_rsnd_clk()
is no longer needed. This patch fixes it.

Fixes: 06e8f5c842 ("ASoC: rsnd: don't call clk_get_rate() under atomic context")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87v978oe2u.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-05-24 09:51:25 +01:00
Kuninori Morimoto
63346d3d2f
ASoC: rsnd: add usage for SRC
This patch add missing usage comment for SRC.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87zgy9z9es.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-14 15:24:14 +01:00
Kuninori Morimoto
15c57ce07c
ASoC: rsnd: add rsnd_ssi_busif_err_irq_enable/disable()
Current ssi.c has duplicated code to control BUSIF
over/under run interrupt.
This patch adds new rsnd_ssi_busif_err_irq_enable/disable()
and share the code.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Yongbo Zhang <giraffesnn123@gmail.com>
Cc: Chen Li <licheng0822@thundersoft.com>
Link: https://lore.kernel.org/r/871rbl1jsb.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-14 15:24:13 +01:00
Kuninori Morimoto
691b379cbe
ASoC: rsnd: add rsnd_ssi_busif_err_status_clear()
Current ssi.c clears BUSIF error status at __rsnd_ssi_interrupt(),
but its code is verbose.
This patch off-load it to rsnd_ssi_busif_err_status_clear().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/8735w11jso.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-14 15:24:12 +01:00
Kuninori Morimoto
a4856e15e5
ASoC: rsnd: check all BUSIF status when error
commit 66c705d07d ("SoC: rsnd: add interrupt support for SSI BUSIF
buffer") adds __rsnd_ssi_interrupt() checks for BUSIF status,
but is using "break" at for loop.
This means it is not checking all status. Let's check all BUSIF status.

Fixes: commit 66c705d07d ("SoC: rsnd: add interrupt support for SSI BUSIF buffer")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/874kgh1jsw.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-14 15:24:10 +01:00
Kuninori Morimoto
a122a116fc
ASoC: rsnd: call rsnd_ssi_master_clk_start() from rsnd_ssi_init()
Current rsnd needs to call .prepare (P) for clock settings,
.trigger for playback start (S) and stop (E).
It should be called as below from SSI point of view.

	P -> S -> E -> P -> S -> E -> ...

But, if you used MIXer, below case might happen

	              (2)
	1: P -> S ---> E -> ...
	2:         P ----> S -> ...
	          (1)     (3)

P(1) setups clock, but E(2) resets it. and starts playback (3).
In such case, it will reports "SSI parent/child should use same rate".

rsnd_ssi_master_clk_start() which is the main function at (P)
was called from rsnd_ssi_init() (= S) before,
but was moved by below patch to rsnd_soc_dai_prepare() (= P) to avoid
using clk_get_rate() which shouldn't be used under atomic context.

	commit 4d230d1271 ("ASoC: rsnd: fixup not to call clk_get/set
				under non-atomic")

Because of above patch, rsnd_ssi_master_clk_start() is now called at (P)
which is for non atomic context. But (P) is assuming that spin lock is
*not* used.
One issue now is rsnd_ssi_master_clk_start() is checking ssi->xxx
which should be protected by spin lock.

After above patch, adg.c had below patch for other reasons.

	commit 06e8f5c842 ("ASoC: rsnd: don't call clk_get_rate()
				under atomic context")

clk_get_rate() is used at probe() timing by this patch.
In other words, rsnd_ssi_master_clk_start() is no longer using
clk_get_rate() any more.

This means we can call it from rsnd_ssi_init() (= S) again which is
protected by spin lock.
This patch re-move it to under spin lock, and solves
1. checking ssi->xxx without spin lock issue.
2. clk setting / device start / device stop race condition.

Reported-by: Linh Phung T. Y. <linh.phung.jy@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/875z0x1jt5.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-14 15:24:09 +01:00
Mikhail Durnev
19c6a63ced
ASoC: rsnd: core: Check convert rate in rsnd_hw_params
snd_pcm_hw_params_set_rate_near can return incorrect sample rate in
some cases, e.g. when the backend output rate is set to some value higher
than 48000 Hz and the input rate is 8000 Hz. So passing the value returned
by snd_pcm_hw_params_set_rate_near to snd_pcm_hw_params will result in
"FSO/FSI ratio error" and playing no audio at all while the userland
is not properly notified about the issue.

If SRC is unable to convert the requested sample rate to the sample rate
the backend is using, then the requested sample rate should be adjusted in
rsnd_hw_params. The userland will be notified about that change in the
returned hw_params structure.

Signed-off-by: Mikhail Durnev <mikhail_durnev@mentor.com>
Link: https://lore.kernel.org/r/1615870055-13954-1-git-send-email-mikhail_durnev@mentor.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-16 13:29:37 +00:00
Mark Brown
fa576ff64f
Merge series "ASoC: rsnd: cleanup ppcheck warning for Renesas sound driver" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:
Hi Mark, Pierre-Louis

These patches are based on below patch-set which from Pierre-Louis,
and cleanup cppcheck warnings for Rensas sound driver.
[3/5] has Reported-by Pierre-Louis tag.

	Subject: [PATCH 0/8] ASoC: sh: remove cppcheck warnings
	Date: Fri, 19 Feb 2021 17:16:27 -0600

Kuninori Morimoto (5):
  ASoC: rsnd: cleanup ppcheck warning for ssiu.c
  ASoC: rsnd: cleanup ppcheck warning for ssi.c
  ASoC: rsnd: cleanup ppcheck warning for core.c
  ASoC: rsnd: cleanup ppcheck warning for cmd.c
  ASoC: rsnd: cleanup ppcheck warning for adg.c

 sound/soc/sh/rcar/adg.c  | 15 +++++++-------
 sound/soc/sh/rcar/cmd.c  | 15 +++++++-------
 sound/soc/sh/rcar/core.c | 32 +++++++++++++---------------
 sound/soc/sh/rcar/ssi.c  | 45 ++++++++++++++++++++--------------------
 sound/soc/sh/rcar/ssiu.c | 22 +++++++++++---------
 5 files changed, 64 insertions(+), 65 deletions(-)

--
2.25.1
2021-03-10 13:08:35 +00:00
Kuninori Morimoto
b6e499bcb3
ASoC: rsnd: cleanup ppcheck warning for adg.c
This patch cleanups below ppcheck warning.

sound/soc/sh/rcar/adg.c:67:9: style: The scope of the variable 'ratio' can be reduced. [variableScope]
 int i, ratio;
        ^
sound/soc/sh/rcar/adg.c:114:6: style: The scope of the variable 'idx' can be reduced. [variableScope]
 int idx, sel, div, step;
     ^
sound/soc/sh/rcar/adg.c:114:21: style: The scope of the variable 'step' can be reduced. [variableScope]
 int idx, sel, div, step;
                    ^
sound/soc/sh/rcar/adg.c:397:14: style: The scope of the variable 'clk' can be reduced. [variableScope]
 struct clk *clk;
             ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87ft1lro24.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-10 13:07:13 +00:00
Kuninori Morimoto
31dbf7acc6
ASoC: rsnd: cleanup ppcheck warning for cmd.c
This patch cleanups below ppcheck warning.

sound/soc/sh/rcar/cmd.c:46:20: style: The scope of the variable 'src' can be reduced. [variableScope]
  struct rsnd_mod *src;
                   ^
sound/soc/sh/rcar/cmd.c:47:27: style: The scope of the variable 'tio' can be reduced. [variableScope]
  struct rsnd_dai_stream *tio;
                          ^
sound/soc/sh/rcar/cmd.c:145:13: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int i, nr, ret;
            ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87h7m1ro28.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-10 13:07:12 +00:00
Kuninori Morimoto
e539943c66
ASoC: rsnd: cleanup ppcheck warning for core.c
This patch cleanups below ppcheck warning.

sound/soc/sh/rcar/core.c:233:26: style: The scope of the variable 'io' can be reduced. [variableScope]
 struct rsnd_dai_stream *io;
                         ^
sound/soc/sh/rcar/core.c:489:19: style: The scope of the variable 'mod' can be reduced. [variableScope]
 struct rsnd_mod *mod;
                  ^
sound/soc/sh/rcar/core.c:1064:9: style: The scope of the variable 'j' can be reduced. [variableScope]
 int i, j;
        ^
sound/soc/sh/rcar/core.c:1143:19: style: The scope of the variable 'mod' can be reduced. [variableScope]
 struct rsnd_mod *mod;
                  ^
sound/soc/sh/rcar/core.c:1261:22: style: The scope of the variable 'playback' can be reduced. [variableScope]
 struct device_node *playback, *capture;
                     ^
sound/soc/sh/rcar/core.c:1261:33: style: The scope of the variable 'capture' can be reduced. [variableScope]
 struct device_node *playback, *capture;
                                ^
sound/soc/sh/rcar/core.c:1419:29: style: The scope of the variable 'be_params' can be reduced. [variableScope]
  struct snd_pcm_hw_params *be_params;
                            ^
sound/soc/sh/rcar/core.c:1369:22: style: Local variable 'rdai' shadows outer variable [shadowVariable]
    struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
                     ^
sound/soc/sh/rcar/core.c:1338:19: note: Shadowed declaration
 struct rsnd_dai *rdai;
                  ^
sound/soc/sh/rcar/core.c:1369:22: note: Shadow variable
    struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
                     ^
sound/soc/sh/rcar/core.c:1380:22: style: Local variable 'rdai' shadows outer variable [shadowVariable]
    struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
                     ^

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87im6hro2d.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-10 13:07:11 +00:00
Kuninori Morimoto
0779baa812
ASoC: rsnd: cleanup ppcheck warning for ssi.c
This patch cleanups below ppcheck warning.

sound/soc/sh/rcar/ssi.c:170:19: style: The scope of the variable 'mod' can be reduced. [variableScope]
 struct rsnd_mod *mod;
                  ^
sound/soc/sh/rcar/ssi.c:535:6: style: The scope of the variable 'i' can be reduced. [variableScope]
 int i;
     ^
sound/soc/sh/rcar/ssi.c:1212:19: style: The scope of the variable 'mod' can be reduced. [variableScope]
 struct rsnd_mod *mod;
                  ^
sound/soc/sh/rcar/ssi.c:328:16: portability: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
 ssi->cr_clk = FORCE | rsnd_rdai_width_to_swl(rdai) |
               ^
sound/soc/sh/rcar/ssi.c:387:12: portability: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
 cr_own |= FORCE | rsnd_rdai_width_to_swl(rdai);
           ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87k0qxro2j.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-10 13:07:10 +00:00
Kuninori Morimoto
929cc78260
ASoC: rsnd: cleanup ppcheck warning for ssiu.c
This patch cleanups below ppcheck warning.

sound/soc/sh/rcar/ssiu.c:212:10: style: The scope of the variable 'shift' can be reduced. [variableScope]
  int i, shift;
         ^
sound/soc/sh/rcar/ssiu.c:337:19: style: The scope of the variable 'mod' can be reduced. [variableScope]
 struct rsnd_mod *mod;
                  ^
sound/soc/sh/rcar/ssiu.c:362:22: style: The scope of the variable 'np' can be reduced. [variableScope]
 struct device_node *np;
                     ^
sound/soc/sh/rcar/ssiu.c:363:19: style: The scope of the variable 'mod' can be reduced. [variableScope]
 struct rsnd_mod *mod;
                  ^
sound/soc/sh/rcar/ssiu.c:366:6: style: The scope of the variable 'i' can be reduced. [variableScope]
 int i;
     ^
sound/soc/sh/rcar/ssiu.c:397:13: style: The scope of the variable 'ret' can be reduced. [variableScope]
 int i, nr, ret;
            ^

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87lfbdro2p.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-10 13:07:09 +00:00