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The previous fix for event generation for custom controls compared the
value already in the register with the value being written, missing the
logic that only applies the value to the register when the control is
already enabled. Fix this, compare the value cached in the driver data
rather than the register.
This should really be an autodisable control rather than open coded.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220428113221.15326-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
As part of the ongoing i2c transition to the simple probe
("probe_new"), this patch uses i2c_match_id to retrieve the
driver_data for the probed device. The id parameter is thus no longer
necessary and the simple probe can be used instead.
In the context of an i2c probe, i2c_match_id with the module id table
and the probed client never returns null, so removing the null check
on the i2c_device_id pointer is safe.
The i2c id tables are moved up before the probe function, as
suggested by Wolfram Sang.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20220415160613.148882-4-steve@sk2.org
Signed-off-by: Mark Brown <broonie@kernel.org>
The max98090 driver has some custom controls which share a put() function
which returns 0 unconditionally, meaning that events are not generated
when the value changes. Fix that.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220420193454.2647908-2-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
The max98090 driver has a custom put function for some controls which can
only be updated in certain circumstances which makes no effort to validate
that input is suitable for the control, allowing out of spec values to be
written to the hardware and presented to userspace. Fix this by returning
an error when invalid values are written.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220420193454.2647908-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
The logic for the jack detection has not changed since the first
commit for this driver. Remove a duplicate read and remove useless
assignment
sound/soc/codecs/max98090.c:2170:6: style: Variable 'reg' is
reassigned a value before the old one has been
used. [redundantAssignment]
reg = snd_soc_component_read(component, M98090_REG_JACK_STATUS);
^
sound/soc/codecs/max98090.c:2161:7: note: reg is assigned
reg = snd_soc_component_read(component, M98090_REG_JACK_STATUS);
^
sound/soc/codecs/max98090.c:2170:6: note: reg is overwritten
reg = snd_soc_component_read(component, M98090_REG_JACK_STATUS);
^
sound/soc/codecs/max98090.c:2170:6: style: Variable 'reg' is
reassigned a value before the old one has been
used. [redundantAssignment]
reg = snd_soc_component_read(component, M98090_REG_JACK_STATUS);
^
sound/soc/codecs/max98090.c:2167:7: note: reg is assigned
reg = snd_soc_component_read(component, M98090_REG_JACK_STATUS);
^
sound/soc/codecs/max98090.c:2170:6: note: reg is overwritten
reg = snd_soc_component_read(component, M98090_REG_JACK_STATUS);
^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210804192456.278702-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
cppcheck warning:
sound/soc/codecs/max98090.c:1835:16: style: Variable 'test_diff' is
assigned a value that is never used. [unreadVariable]
int test_diff = INT_MAX;
^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210312182246.5153-13-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The driver can match by multiple methods. Its of_device_id table is
referenced via of_match_ptr() so it will be unused for !CONFIG_OF
builds:
sound/soc/codecs/max98090.c:2671:34: warning: ‘max98090_of_match’ defined but not used [-Wunused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201125164452.89239-22-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
snd_soc_dai_digital_mute() is internally using both
mute_stream() (1) or digital_mute() (2), but the difference between
these 2 are only handling direction.
We can merge digital_mute() into mute_stream
int snd_soc_dai_digital_mute(xxx, int direction)
{
...
else if (dai->driver->ops->mute_stream)
(1) return dai->driver->ops->mute_stream(xxx, direction);
else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
dai->driver->ops->digital_mute)
(2) return dai->driver->ops->digital_mute(xxx);
...
}
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/87y2ntwix0.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We need to use snd_soc_component_read()
instead of snd_soc_component_read32()
This patch renames _read32() to _read()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87imfr4mdl.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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/87wo5e58j4.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Reverts commit 62d5ae4cafb7 ("ASoC: max98090: save and restore
SHDN when changing sensitive registers").
A critical side-effect was observed: when keep playing something,
the recorded sound has chance to break (clipping).
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200214105744.82258-2-tzungbi@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 08df0d9a00f7 ("ASoC: max98090: revert "ASoC: max98090: fix lockdep
warning"") provided a good rationale for removing separate lock for the
SHDN register access. However it restored the lockdep warning during the
system boot. To silence the lockdep warning, mark the mutex taken in the
max98090_shdn_save() function with the lockdep class dedicated for the
runtime DAPM operations: SND_SOC_DAPM_CLASS_RUNTIME. This finally fixes
the following lockdep warning observed on Exynos4412-based Odroid U3
board:
======================================================
WARNING: possible circular locking dependency detected
5.5.0-rc7-next-20200123 #7329 Not tainted
------------------------------------------------------
alsactl/1105 is trying to acquire lock:
ed4f7cf4 (&card->dapm_mutex){+.+.}, at: max98090_shdn_save+0x1c/0x28
but task is already holding lock:
edb8d49c (&card->controls_rwsem){++++}, at: snd_ctl_ioctl+0xcc/0xbb8
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&card->controls_rwsem){++++}:
snd_ctl_add_replace+0x3c/0x84
dapm_create_or_share_kcontrol+0x24c/0x2e0
snd_soc_dapm_new_widgets+0x308/0x594
snd_soc_bind_card+0x834/0xa94
devm_snd_soc_register_card+0x34/0x6c
odroid_audio_probe+0x288/0x34c
platform_drv_probe+0x6c/0xa4
really_probe+0x200/0x48c
driver_probe_device+0x78/0x1f8
bus_for_each_drv+0x74/0xb8
__device_attach+0xd4/0x16c
bus_probe_device+0x88/0x90
deferred_probe_work_func+0x3c/0xd0
process_one_work+0x230/0x7bc
worker_thread+0x44/0x524
kthread+0x130/0x164
ret_from_fork+0x14/0x20
0x0
-> #0 (&card->dapm_mutex){+.+.}:
lock_acquire+0xe8/0x270
__mutex_lock+0x9c/0xb18
mutex_lock_nested+0x1c/0x24
max98090_shdn_save+0x1c/0x28
max98090_put_enum_double+0x20/0x40
snd_ctl_ioctl+0x190/0xbb8
ksys_ioctl+0x484/0xb10
ret_fast_syscall+0x0/0x28
0xbede0564
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&card->controls_rwsem);
lock(&card->dapm_mutex);
lock(&card->controls_rwsem);
lock(&card->dapm_mutex);
*** DEADLOCK ***
1 lock held by alsactl/1105:
#0: edb8d49c (&card->controls_rwsem){++++}, at: snd_ctl_ioctl+0xcc/0xbb8
stack backtrace:
CPU: 2 PID: 1105 Comm: alsactl Not tainted 5.5.0-rc7-next-20200123 #7329
Hardware name: Samsung Exynos (Flattened Device Tree)
[<c01126f0>] (unwind_backtrace) from [<c010e1e8>] (show_stack+0x10/0x14)
[<c010e1e8>] (show_stack) from [<c0b5234c>] (dump_stack+0xb4/0xe0)
[<c0b5234c>] (dump_stack) from [<c018a610>] (check_noncircular+0x1ec/0x208)
[<c018a610>] (check_noncircular) from [<c018ca2c>] (__lock_acquire+0x1210/0x25ec)
[<c018ca2c>] (__lock_acquire) from [<c018e728>] (lock_acquire+0xe8/0x270)
[<c018e728>] (lock_acquire) from [<c0b71928>] (__mutex_lock+0x9c/0xb18)
[<c0b71928>] (__mutex_lock) from [<c0b723c0>] (mutex_lock_nested+0x1c/0x24)
[<c0b723c0>] (mutex_lock_nested) from [<c086097c>] (max98090_shdn_save+0x1c/0x28)
[<c086097c>] (max98090_shdn_save) from [<c08613f8>] (max98090_put_enum_double+0x20/0x40)
[<c08613f8>] (max98090_put_enum_double) from [<c0833f20>] (snd_ctl_ioctl+0x190/0xbb8)
[<c0833f20>] (snd_ctl_ioctl) from [<c02cae14>] (ksys_ioctl+0x484/0xb10)
[<c02cae14>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
Exception stack(0xed331fa8 to 0xed331ff0)
...
Fixes: 08df0d9a00f7 ("ASoC: max98090: revert "ASoC: max98090: fix lockdep warning"")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200123134046.9769-1-m.szyprowski@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when
changing sensitive registers SHDN bit") uses dapm_mutex to protect SHDN
bit. However, snd_soc_dapm_put_enum_double() in
max98090_dapm_put_enum_double() acquires the dapm_mutex again which
cause a deadlock.
Use snd_soc_dapm_put_enum_double_locked() instead to fix the deadlock.
Fixes: 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing sensitive registers SHDN bit")
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200117073814.82441-4-tzungbi@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 2dc98af62c32 ("ASoC: max98090: fix lockdep warning") introduced
a helpful-less small lock: shdn_lock. Reverts the commit.
Reasons:
1. Lockdep should not be happy by either the original or current code.
From lockdep's point of view, there is a lock inversion anyway.
Let d = dapm_mutex, c = controls_rwsem, s = shdn_lock,
From the reported calling stack: lock acquisition order of
snd_soc_register_card() is: d -> c.
> snd_ctl_add_replace+0x3c/0x84
> dapm_create_or_share_kcontrol+0x24c/0x2e0
> snd_soc_dapm_new_widgets+0x308/0x594
> snd_soc_bind_card+0x80c/0xad4
> devm_snd_soc_register_card+0x34/0x6c
If calling snd_soc_dapm_put_enum_double() in kcontrol's put (e.g.
SOC_DAPM_ENUM_EXT), lock acquisition order is: c -> d. Note that,
snd_soc_dapm_put_enum_double() acquires d.
The possible lock inversion is always there if registering sound card
and putting mixer control happen at the same time. In fact, it never
happens because the control device don't show up to the userspace until
the sound card build success.
Commit 2dc98af62c32 ("ASoC: max98090: fix lockdep warning") changes the
order to: c -> s -> d. The lock inversion is still there.
2. Commit 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when
changing sensitive registers SHDN bit") designed to use dapm_mutex to
protect SHDN bit. Use a separate lock breaks the protection.
DAPM changes SHDN bit automatically when it finds the path. Thus, any
code wants to change the SHDN bit, need to acquire the dapm_mutex first.
> SND_SOC_DAPM_SUPPLY("SHDN", M98090_REG_DEVICE_SHUTDOWN,
> M98090_SHDNN_SHIFT, 0, NULL, 0),
Fixes: 2dc98af62c32 ("ASoC: max98090: fix lockdep warning")
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200117073814.82441-2-tzungbi@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This reverts commit 4e93c1294f4b051 (ASoC: max98090: fix incorrect
helper in max98090_dapm_put_enum_double()) which was misapplied.
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing
sensitive registers") extended the code for handling many controls by
adding a custom put function to them. That new custom put function
properly handles relations between codec's hardware registers. However
they used card->dapm_mutex to properly serialize those operations. This
in turn triggers a lockdep warning about possible circular dependency.
Fix this by introducing a separate mutex only for serializing the SHDN
hardware register related operations.
This fixes the following lockdep warning observed on Exynos4412-based
Odroid U3 board:
======================================================
WARNING: possible circular locking dependency detected
5.5.0-rc5-next-20200107 #166 Not tainted
------------------------------------------------------
alsactl/1104 is trying to acquire lock:
ed0d50f4 (&card->dapm_mutex){+.+.}, at: max98090_shdn_save+0x1c/0x28
but task is already holding lock:
edb4b49c (&card->controls_rwsem){++++}, at: snd_ctl_ioctl+0xcc/0xbb8
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&card->controls_rwsem){++++}:
snd_ctl_add_replace+0x3c/0x84
dapm_create_or_share_kcontrol+0x24c/0x2e0
snd_soc_dapm_new_widgets+0x308/0x594
snd_soc_bind_card+0x80c/0xad4
devm_snd_soc_register_card+0x34/0x6c
odroid_audio_probe+0x288/0x34c
platform_drv_probe+0x6c/0xa4
really_probe+0x200/0x490
driver_probe_device+0x78/0x1f8
bus_for_each_drv+0x74/0xb8
__device_attach+0xd4/0x16c
bus_probe_device+0x88/0x90
deferred_probe_work_func+0x3c/0xd0
process_one_work+0x22c/0x7c4
worker_thread+0x44/0x524
kthread+0x130/0x164
ret_from_fork+0x14/0x20
0x0
-> #0 (&card->dapm_mutex){+.+.}:
lock_acquire+0xe8/0x270
__mutex_lock+0x9c/0xb18
mutex_lock_nested+0x1c/0x24
max98090_shdn_save+0x1c/0x28
max98090_put_enum_double+0x20/0x40
snd_ctl_ioctl+0x190/0xbb8
ksys_ioctl+0x470/0xaf8
ret_fast_syscall+0x0/0x28
0xbefaa564
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&card->controls_rwsem);
lock(&card->dapm_mutex);
lock(&card->controls_rwsem);
lock(&card->dapm_mutex);
*** DEADLOCK ***
1 lock held by alsactl/1104:
#0: edb4b49c (&card->controls_rwsem){++++}, at: snd_ctl_ioctl+0xcc/0xbb8
stack backtrace:
CPU: 0 PID: 1104 Comm: alsactl Not tainted 5.5.0-rc5-next-20200107 #166
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
(unwind_backtrace) from [<c010e180>] (show_stack+0x10/0x14)
(show_stack) from [<c0b2a09c>] (dump_stack+0xb4/0xe0)
(dump_stack) from [<c018a1c0>] (check_noncircular+0x1ec/0x208)
(check_noncircular) from [<c018c5dc>] (__lock_acquire+0x1210/0x25ec)
(__lock_acquire) from [<c018e2d8>] (lock_acquire+0xe8/0x270)
(lock_acquire) from [<c0b49678>] (__mutex_lock+0x9c/0xb18)
(__mutex_lock) from [<c0b4a110>] (mutex_lock_nested+0x1c/0x24)
(mutex_lock_nested) from [<c0839b3c>] (max98090_shdn_save+0x1c/0x28)
(max98090_shdn_save) from [<c083a5b8>] (max98090_put_enum_double+0x20/0x40)
(max98090_put_enum_double) from [<c080d0e8>] (snd_ctl_ioctl+0x190/0xbb8)
(snd_ctl_ioctl) from [<c02cafec>] (ksys_ioctl+0x470/0xaf8)
(ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
...
Fixes: 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing sensitive registers")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200108115007.31095-2-m.szyprowski@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing
sensitive registers") extended the code for handling "LTENL Mux", "LTENR
Mux", "LBENL Mux" and "LBENR Mux" controls by adding a custom
max98090_dapm_put_enum_double() function to them. However that function
used incorrect helper to get its component object. Fix this by using the
proper snd_soc_dapm_* helper.
This fixes the following NULL pointer exception observed on
Exynos4412-based Odroid U3 board:
8<--- cut here ---
Unable to handle kernel NULL pointer dereference at virtual address 000000b0
pgd = (ptrval)
[000000b0] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 1104 Comm: alsactl Not tainted 5.5.0-rc5-next-20200107 #166
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
PC is at __mutex_lock+0x54/0xb18
LR is at ___might_sleep+0x3c/0x2e0
...
Process alsactl (pid: 1104, stack limit = 0x(ptrval))
...
[<c0b49630>] (__mutex_lock) from [<c0b4a110>] (mutex_lock_nested+0x1c/0x24)
[<c0b4a110>] (mutex_lock_nested) from [<c0839b3c>] (max98090_shdn_save+0x1c/0x28)
[<c0839b3c>] (max98090_shdn_save) from [<c083a4f8>] (max98090_dapm_put_enum_double+0x20/0x40)
[<c083a4f8>] (max98090_dapm_put_enum_double) from [<c080d0e8>] (snd_ctl_ioctl+0x190/0xbb8)
[<c080d0e8>] (snd_ctl_ioctl) from [<c02cafec>] (ksys_ioctl+0x470/0xaf8)
[<c02cafec>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
...
---[ end trace 0e93f0580f4b9241 ]---
Fixes: 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing sensitive registers")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200108115007.31095-1-m.szyprowski@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing
sensitive registers") extended the code for handling "LTENL Mux", "LTENR
Mux", "LBENL Mux" and "LBENR Mux" controls by adding a custom
max98090_dapm_put_enum_double() function to them. However that function
used incorrect helper to get its component object. Fix this by using the
proper snd_soc_dapm_* helper.
This fixes the following NULL pointer exception observed on
Exynos4412-based Odroid U3 board:
8<--- cut here ---
Unable to handle kernel NULL pointer dereference at virtual address 000000b0
pgd = (ptrval)
[000000b0] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 1104 Comm: alsactl Not tainted 5.5.0-rc5-next-20200107 #166
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
PC is at __mutex_lock+0x54/0xb18
LR is at ___might_sleep+0x3c/0x2e0
...
Process alsactl (pid: 1104, stack limit = 0x(ptrval))
...
[<c0b49630>] (__mutex_lock) from [<c0b4a110>] (mutex_lock_nested+0x1c/0x24)
[<c0b4a110>] (mutex_lock_nested) from [<c0839b3c>] (max98090_shdn_save+0x1c/0x28)
[<c0839b3c>] (max98090_shdn_save) from [<c083a4f8>] (max98090_dapm_put_enum_double+0x20/0x40)
[<c083a4f8>] (max98090_dapm_put_enum_double) from [<c080d0e8>] (snd_ctl_ioctl+0x190/0xbb8)
[<c080d0e8>] (snd_ctl_ioctl) from [<c02cafec>] (ksys_ioctl+0x470/0xaf8)
[<c02cafec>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
...
---[ end trace 0e93f0580f4b9241 ]---
Fixes: 62d5ae4cafb7 ("ASoC: max98090: save and restore SHDN when changing sensitive registers")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20200108115007.31095-1-m.szyprowski@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
According to the datasheet, there are some registers can only be changed
when SHDN is 0. Changing these settings during SHDN = 1 can compromise
device stability and performance specifications.
Saves SHDN before writing to these sensitive registers and restores SHDN
afterward.
Here is the register list codec driver of max98090 wants to change:
M98090_REG_QUICK_SYSTEM_CLOCK 0x04
M98090_REG_QUICK_SAMPLE_RATE 0x05
M98090_REG_DAI_INTERFACE 0x06
M98090_REG_DAC_PATH 0x07
M98090_REG_MIC_DIRECT_TO_ADC 0x08
M98090_REG_LINE_TO_ADC 0x09
M98090_REG_ANALOG_MIC_LOOP 0x0A
M98090_REG_ANALOG_LINE_LOOP 0x0B
M98090_REG_SYSTEM_CLOCK 0x1B
M98090_REG_CLOCK_MODE 0x1C
M98090_REG_CLOCK_RATIO_NI_MSB 0x1D
M98090_REG_CLOCK_RATIO_NI_LSB 0x1E
M98090_REG_CLOCK_RATIO_MI_MSB 0x1F
M98090_REG_CLOCK_RATIO_MI_LSB 0x20
M98090_REG_MASTER_MODE 0x21
M98090_REG_INTERFACE_FORMAT 0x22
M98090_REG_TDM_CONTROL 0x23
M98090_REG_TDM_FORMAT 0x24
M98090_REG_IO_CONFIGURATION 0x25
M98090_REG_FILTER_CONFIG 0x26
M98090_REG_INPUT_ENABLE 0x3E
M98090_REG_OUTPUT_ENABLE 0x3F
M98090_REG_BIAS_CONTROL 0x42
M98090_REG_DAC_CONTROL 0x43
M98090_REG_ADC_CONTROL 0x44
M98090_REG_DRC_TIMING 0x33
M98090_REG_DRC_COMPRESSOR 0x34
M98090_REG_DRC_EXPANDER 0x35
M98090_REG_DSP_FILTER_ENABLE 0x41
M98090_REG_EQUALIZER_BASE 0x46
M98090_REG_RECORD_BIQUAD_BASE 0xAF
M98090_REG_DIGITAL_MIC_ENABLE 0x13
M98090_REG_DIGITAL_MIC_CONFIG 0x14
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20191128151908.180871-1-tzungbi@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
max98090_interrupt() and max98090_pll_work() run in 2 different threads.
There are 2 possible races:
Note: M98090_REG_DEVICE_STATUS = 0x01.
Note: ULK == 0, PLL is locked; ULK == 1, PLL is unlocked.
max98090_interrupt max98090_pll_work
----------------------------------------------
schedule max98090_pll_work
restart max98090 codec
receive ULK INT
assert ULK == 0
schedule max98090_pll_work (1).
In the case (1), the PLL is locked but max98090_interrupt unnecessarily
schedules another max98090_pll_work.
max98090_interrupt max98090_pll_work max98090 codec
----------------------------------------------------------------------
ULK = 1
receive ULK INT
read 0x01
ULK = 0 (clear on read)
schedule max98090_pll_work
restart max98090 codec
ULK = 1
receive ULK INT
read 0x01
ULK = 0 (clear on read)
read 0x01
assert ULK == 0 (2).
In the case (2), both max98090_interrupt and max98090_pll_work read
the same clear-on-read register. max98090_pll_work would falsely
thought PLL is locked.
Note: the case (2) race is introduced by the previous commit ("ASoC:
max98090: exit workaround earlier if PLL is locked") to check the status
and exit the loop earlier in max98090_pll_work.
There are 2 possible solution options:
A. turn off ULK interrupt before scheduling max98090_pll_work; and turn
on again before exiting max98090_pll_work.
B. remove the second thread of execution.
Option A cannot fix the case (2) race because it still has 2 threads
access the same clear-on-read register simultaneously. Although we
could suppose the register is volatile and read the status via I2C could
be much slower than the hardware raises the bits.
Option B introduces a maximum 10~12 msec penalty delay in the interrupt
handler. However, it could only punish the jack detection by extra
10~12 msec.
Adopts option B which is the better solution overall.
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20191122073114.219945-4-tzungbi@google.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
According to the datasheet, PLL lock time typically takes 2 msec and
at most takes 7 msec.
Check the lock status every 1 msec and exit the workaround if PLL is
locked.
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20191122073114.219945-3-tzungbi@google.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
It was observed Baytrail-based chromebooks could cause continuous PLL
unlocked when using playback stream and capture stream simultaneously.
Specifically, starting a capture stream after started a playback stream.
As a result, the audio data could corrupt or turn completely silent.
As the datasheet suggested, the maximum PLL lock time should be 7 msec.
The workaround resets the codec softly by toggling SHDN off and on if
PLL failed to lock for 10 msec. Notably, there is no suggested hold
time for SHDN off.
On Baytrail-based chromebooks, it would easily happen continuous PLL
unlocked if there is a 10 msec delay between SHDN off and on. Removes
the msleep().
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20191122073114.219945-2-tzungbi@google.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Based on 2 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 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 #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The supported formats are S16_LE and S24_LE now. However, by datasheet
of max98090, S24_LE is only supported when it is in the right justified
mode. We should remove 24-bit format if it is not in that mode to avoid
triggering error.
Signed-off-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The max98090 driver defines 3 DAPM muxes; one for the right line output
(LINMOD Mux), one for the left headphone mixer source (MIXHPLSEL Mux)
and one for the right headphone mixer source (MIXHPRSEL Mux). The same
bit is used for the mux as well as the DAPM enable, and although the mux
can be correctly configured, after playback has completed, the mux will
be reset during the disable phase. This is preventing the state of these
muxes from being saved and restored correctly on system reboot. Fix this
by marking these muxes as SND_SOC_NOPM.
Note this has been verified this on the Tegra124 Nyan Big which features
the MAX98090 codec.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Fix warnings with W=1
If these variables are useful then this driver should be modified to
expose them.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
'commit b8a3ee820f7b ("ASoC: max98090: Add recovery for PLL lock failure")'
enabled a workaround PLL unlocked issues, but generates annoying
dev_info "PLL unlocked" messages at a 10ms rate, usually on startup.
Move to dev_info_ratelimited. This issue doesn't seem to impact audio
functionality. This trace is commented out in the GalliumOS patches,
it's better to keep it to check on potential quality issues
Tested on Lenovo 100s (Baytrail Chromebook)
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Declare snd_soc_codec_driver structures as const as they are only passed
as an argument to the function snd_soc_register_codec. This argument is
of type const, so declare the structures with this property as const.
In file codecs/sn95031.c, snd_soc_codec_driver structure is also used in
a copy operation along with getting passed to snd_soc_register_codec.
So, it can be made const too.
Done using Coccinelle:
@match disable optional_qualifier@
identifier s;
position p;
@@
static struct snd_soc_codec_driver s@p={...};
@good1@
identifier match.s;
position p;
@@
snd_soc_register_codec(...,&s@p,...)
@bad@
identifier match.s;
position p!={match.p,good1.p};
@@
s@p
@depends on !bad disable optional_qualifier@
identifier match.s;
@@
static
+const
struct snd_soc_codec_driver s={...};
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
In max98090_probe(), code checks for micbias being out of range. The
'micbias' variable in unsigned and checked against M98090_MBVSEL_2V2 which
is zero, so remove this check.
sound/soc/codecs/max98090.c: In function ‘max98090_probe’:
sound/soc/codecs/max98090.c:2459:2: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
} else if (micbias < M98090_MBVSEL_2V2 || micbias > M98090_MBVSEL_2V8) {
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Enforce correct device sequencing when configuring a new
audio route when there is an existing active audio route(s).
This patch fixed recording noise issue while playback is active.
We have some registers which require the device to be in full shutdown
or to enter full shutdown before the register settings will take effect.
Currently the driver is not shutting down the device when a new audio
route is created. If a new audio route is made active while there is
already an active audio route, then the required register sequencing is
violated. A hardware shutdown toggle when creating a new audio route
corrects the sequencing error. The device must remain in hardware
shutdown for 40ms to allow the internal hardware core to fully shutdown.
Signed-off-by: Fang, Yang A <yang.a.fang@intel.com>
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Acked-by: Anish Kumar <anish.kumar@maximintegrated.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
DECLARE_TLV_DB_RANGE() has the advantage over using TLV_DB_RANGE_HEAD()
that it automatically calculates the number of items in the TLV and is
hence less prone to manual error.
Generate using the following coccinelle script
// <smpl>
@@
declarer name DECLARE_TLV_DB_RANGE;
identifier tlv;
constant x;
@@
-unsigned int tlv[] = {
- TLV_DB_RANGE_HEAD(x),
+DECLARE_TLV_DB_RANGE(tlv,
...
-};
+);
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
The readable registers are in consecutive ranges:
0x01 ~ 0x03, 0x0D ~ 0xD1, 0xFF
So simplify the implementation by specifying a range of consecutive values
in a single case label.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The snd_soc_dai_ops variables are not modified after initialization in
these drivers, so make them const.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Constify the ACPI device ID array and the register map, no need to have
them writable at runtime.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The dapm field of the snd_soc_codec struct is eventually going to be
removed, in preparation for this replace all manual access to
codec->dapm.bias_level with snd_soc_codec_get_bias_level() and all other
manual access to codec->dapm with snd_soc_codec_get_dapm().
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
max98090_jack_work() doesn't modify the DAPM graph other than what's done
in snd_soc_jack_report(). snd_soc_jack_report() already calls
snd_soc_dapm_sync() internally, so there is no need to call it manually
and can be removed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
All drivers have the same line at the end of the set_bias_level callback to
update the bias_level state. Move this update into
snd_soc_dapm_force_bias_level() and remove them from the drivers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
