Commit Graph

781793 Commits

Author SHA1 Message Date
Kuninori Morimoto f70f18f7d4
ASoC: add for_each_card_components() macro
To be more readable code, this patch adds
new for_each_card_components() macro, and replace existing code to it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-20 10:22:58 -07:00
Kuninori Morimoto bcb1fd1fcd
ASoC: add for_each_card_rtds() macro
To be more readable code, this patch adds
new for_each_card_rtds() macro, and replace existing code to it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-20 10:21:28 -07:00
Kuninori Morimoto 98061fdbfc
ASoC: add for_each_card_links() macro
To be more readable code, this patch adds
new for_each_card_links() macro, and replace existing code to it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-20 10:20:02 -07:00
Kuninori Morimoto 7fe072b4df
ASoC: add for_each_card_prelinks() macro
To be more readable code, this patch adds
new for_each_card_prelinks() macro, and replace existing code to it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-20 10:18:34 -07:00
Kuninori Morimoto 6d11b12879
ASoC: rename for_each_rtd_codec_dai_reverse to rollback
commit 0b7990e389 ("ASoC: add for_each_rtd_codec_dai() macro")
added for_each_rtd_codec_dai_reverse(). but _rollback() is better
naming than _reverse(). This patch rename it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-20 10:17:05 -07:00
Kuninori Morimoto 7afecb3073
ASoC: convert for_each_rtd_codec_dai() for missing part
commit 0b7990e389 ("ASoC: add for_each_rtd_codec_dai() macro")
added for_each_rtd_codec_dai(), but it didn't convert few loop
which is not using "rtd". This patch fixup it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-20 10:11:12 -07:00
Rohit kumar 3a6818c771
ASoC: q6afe: dt-bindings: Update input range for qcom,sd-lines
Input to qcom,sd-lines should be between 0 and 3 instead of
1 to 4 as 0 corresponds to BIT(0) which is MI2S_SD0 line.
Bit 1 to 3 corresponds to SD1 to SD3 lines respectively.
Updated documentation for the same.

Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-19 10:35:21 -07:00
Linus Walleij 65ba4dd520
ASoC: rt5677-spi: Drop unused GPIO include
This SPI driver does not use the legacy GPIO header so
just delete it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 12:49:33 -07:00
Shuming Fan 37efe23dcc
ASoC: rt5682: Minor code modification
Minor code changes are:
 - improve the readability in patch list
 - add i2c remove function
 - regmap_register_patch changes to regmap_multi_reg_write

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 10:38:34 -07:00
Shuming Fan 28b20dde5e
ASoC: rt5682: Fix the boost volume at the begining of playback
This patch fixed the boost volume at the begining of playback
while DAC volume set to lower level.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 10:30:40 -07:00
Shuming Fan afd603e4de
ASoC: rt5682: Update calibration function
The ADC/DAC path should open while calibration process.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 10:30:30 -07:00
Mark Brown 90fbeb0cab
Merge branch 'asoc-4.19' into asoc-4.20 for rt5682 deps. 2018-09-18 10:30:14 -07:00
Shuming Fan 3f24f37adb
ASoC: rt5682: Remove HP volume control
This patch removed Headphone Playback Volume control.
Due to codec settings, we don't want the user to change HP analog gain.
The user could use DAC1 Playback Volume control to
change playback volume.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 10:29:47 -07:00
Shuming Fan bf0fa00fd8
ASoC: rt5682: Improve HP performance
We change the settings while HP power-up for better performance.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 10:28:38 -07:00
zhong jiang 29ca7d32d7
ASoC: remove redundant include
module.h already contained moduleparam.h,  so it is safe to remove
the redundant include.

The issue is detected with the help of Coccinelle.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18 10:28:29 -07:00
Oder Chiou fbb673f7c6
ASoC: rt5514-spi: Get the period_bytes in the copy work to make sure the value correctly
The value of period_bytes will get the zero before the hw_params() is not
run completely. Move the function snd_pcm_lib_period_bytes() to copy work,
and make sure that is not zero.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-17 10:48:40 -07:00
Kuninori Morimoto be6ac0a9ce
ASoC: soc-core: add snd_soc_is_matching_component()
To find (CPU/)Codec/Platform, we need to find component first
(= on CPU/Codec/Platform), and find DAI from it (= CPU/Codec).
These are similar operation but difficult to be simple,
and has many duplicate code to finding component.
This patch adds new snd_soc_is_matching_component(),
and reduce duplicate codes.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-17 10:46:08 -07:00
Kuninori Morimoto 4a9ed39477
ASoC: soc-core: manage platform name under snd_soc_init_platform()
Now "platform" is controlled by snd_soc_dai_link_component,
thus its "name" can be initialized in snd_soc_init_platform(),
instead of soc_bind_dai_link() local.
This patch do it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-17 10:46:06 -07:00
YueHaibing 24b7a0aa1a
ASoC: qdsp6: q6asm-dai: remove duplicated include from q6asm-dai.c
Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-17 10:32:05 -07:00
Gustavo A. R. Silva 982e386379
ASoC: hisilicon: fix fall-through annotations
Replace "fallthru" with a proper "fall through" annotation.

This fix is part of the ongoing efforts to enabling
-Wimplicit-fallthrough

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-17 10:30:23 -07:00
Gustavo A. R. Silva 597d18325a
ASoC: es8328: Fix fall-through annotations
Replace "fallthru" with a proper "fall through" annotation.

This fix is part of the ongoing efforts to enabling
-Wimplicit-fallthrough

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-17 09:55:48 -07:00
Mark Brown d9b84a1589
ALSA: hda: Fix implicit definition of pci_iomap() on SH
Include asm/io.h directly so we've got a definition of pci_iomap(), the
current set of includes do this implicitly on most architectures but not
on SH.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 12:43:38 +01:00
Yu Zhao 75383f8d39
sound: don't call skl_init_chip() to reset intel skl soc
Internally, skl_init_chip() calls snd_hdac_bus_init_chip() which
1) sets bus->chip_init to prevent multiple entrances before device
is stopped; 2) enables interrupt.

We shouldn't use it for the purpose of resetting device only because
1) when we really want to initialize device, we won't be able to do
so; 2) we are ready to handle interrupt yet, and kernel crashes when
interrupt comes in.

Rename azx_reset() to snd_hdac_bus_reset_link(), and use it to reset
device properly.

Fixes: 60767abcea ("ASoC: Intel: Skylake: Reset the controller in probe")
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 11:22:09 +01:00
Yu Zhao b61749a89f
sound: enable interrupt after dma buffer initialization
In snd_hdac_bus_init_chip(), we enable interrupt before
snd_hdac_bus_init_cmd_io() initializing dma buffers. If irq has
been acquired and irq handler uses the dma buffer, kernel may crash
when interrupt comes in.

Fix the problem by postponing enabling irq after dma buffer
initialization. And warn once on null dma buffer pointer during the
initialization.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 11:21:55 +01:00
Yu Zhao 542cedec53
Revert "ASoC: Intel: Skylake: Acquire irq after RIRB allocation"
This reverts commit 12eeeb4f47.

The patch doesn't fix accessing memory with null pointer in
skl_interrupt().

There are two problems: 1) skl_init_chip() is called twice, before
and after dma buffer is allocate. The first call sets bus->chip_init
which prevents the second from initializing bus->corb.buf and
rirb.buf from bus->rb.area. 2) snd_hdac_bus_init_chip() enables
interrupt before snd_hdac_bus_init_cmd_io() initializing dma buffers.
There is a small window which skl_interrupt() can be called if irq
has been acquired. If so, it crashes when using null dma buffer
pointers.

Will fix the problems in the following patches. Also attaching the
crash for future reference.

[   16.949148] general protection fault: 0000 [#1] PREEMPT SMP KASAN PTI
<snipped>
[   16.950903] Call Trace:
[   16.950906]  <IRQ>
[   16.950918]  skl_interrupt+0x19e/0x2d6 [snd_soc_skl]
[   16.950926]  ? dma_supported+0xb5/0xb5 [snd_soc_skl]
[   16.950933]  __handle_irq_event_percpu+0x27a/0x6c8
[   16.950937]  ? __irq_wake_thread+0x1d1/0x1d1
[   16.950942]  ? __do_softirq+0x57a/0x69e
[   16.950944]  handle_irq_event_percpu+0x95/0x1ba
[   16.950948]  ? _raw_spin_unlock+0x65/0xdc
[   16.950951]  ? __handle_irq_event_percpu+0x6c8/0x6c8
[   16.950953]  ? _raw_spin_unlock+0x65/0xdc
[   16.950957]  ? time_cpufreq_notifier+0x483/0x483
[   16.950959]  handle_irq_event+0x89/0x123
[   16.950962]  handle_fasteoi_irq+0x16f/0x425
[   16.950965]  handle_irq+0x1fe/0x28e
[   16.950969]  do_IRQ+0x6e/0x12e
[   16.950972]  common_interrupt+0x7a/0x7a
[   16.950974]  </IRQ>
<snipped>
[   16.951031] RIP: snd_hdac_bus_update_rirb+0x19b/0x4cf [snd_hda_core] RSP: ffff88015c807c08
[   16.951036] ---[ end trace 58bf9ece1775bc92 ]---

Fixes: 2eeeb4f4733b ("ASoC: Intel: Skylake: Acquire irq after RIRB allocation")
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 11:19:43 +01:00
Kuninori Morimoto a7c439d612
ASoC: soc-core: remove dai->driver NULL check
It is strange if it has "dai" but doesn't have "dai->driver".
And more over "dai->driver->xxx" is used everywhere without
"dai->driver" pointer NULL checking.
It got Oops already if "dai->driver" was NULL.
Let's remove un-needed "dai->driver" NULL check.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 11:12:27 +01:00
Srinivas Kandagatla e894efef9a
ASoC: core: add support to card rebind
Current behaviour of ASoC core w.r.t to component removal is that it
unregisters dependent sound card totally. There is no support to
rebind the card if the component comes back.
Typical use case is DSP restart or kernel modules itself.

With this patch, core now maintains list of cards that are unbind due to
any of its depended components are removed and card not unregistered yet.
This list is cleared when the card is rebind successfully or when the
card is unregistered from machine driver.

This list of unbind cards are tried to bind once again after every new
component is successfully added, giving a fair chance for card bind
to be successful.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 11:09:04 +01:00
zhong jiang e1e38ea14e
ASoC: remove unneeded static set .owner field in platform_driver
platform_driver_register will set the .owner field. So it is safe
to remove the redundant assignment.

The issue is detected with the help of Coccinelle.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-12 10:52:25 +01:00
Katsuhiro Suzuki 24d6638302
ASoC: rockchip: add missing INTERLEAVED PCM attribute
This patch adds SNDRV_PCM_INFO_INTERLEAVED into PCM hardware info.

Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-11 19:19:53 +01:00
Kuninori Morimoto 4f1b327e65
ASoC: soc-core: remove unused num_dai_links
ALSA SoC is counting card->dai_link_list user,
but no-one is using it.
Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-11 17:18:39 +01:00
Kuninori Morimoto 2eda3cb108
ASoC: soc-core: avoid nested code on soc_remove_dai()
Nested code is not readable.
This patch avoid it on soc_remove_dai().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-11 17:18:23 +01:00
Kuninori Morimoto a6ebf4c977
ASoC: rt5668: remove empty rt5668_i2c_remove()
rt5668_i2c_remove() is empty, and no longer needed.
Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-11 16:57:39 +01:00
Rohit kumar ae7d1247d8
ASoC: Fix UBSAN warning at snd_soc_get/put_volsw_sx()
In functions snd_soc_get_volsw_sx() or snd_soc_put_volsw_sx(),
if the result of (min + max) is negative, then fls() returns
signed integer with value as 32. This leads to signed integer
overflow as complete operation is considered as signed integer.

UBSAN: Undefined behaviour in sound/soc/soc-ops.c:382:50
signed integer overflow:
-2147483648 - 1 cannot be represented in type 'int'
Call trace:
[<ffffff852f746fe4>] __dump_stack lib/dump_stack.c:15 [inline]
[<ffffff852f746fe4>] dump_stack+0xec/0x158 lib/dump_stack.c:51
[<ffffff852f7b5f3c>] ubsan_epilogue+0x18/0x50 lib/ubsan.c:164
[<ffffff852f7b6840>] handle_overflow+0xf8/0x130 lib/ubsan.c:195
[<ffffff852f7b68f0>] __ubsan_handle_sub_overflow+0x34/0x44 lib/ubsan.c:211
[<ffffff85307971a0>] snd_soc_get_volsw_sx+0x1a8/0x1f8 sound/soc/soc-ops.c:382

Typecast the operation to unsigned int to fix the issue.

Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-11 11:58:52 +01:00
Mark Brown 54a3da1c10
Merge branch 'asoc-4.19' into asoc-4.20 Cirrus conflict 2018-09-10 18:55:12 +01:00
Robert Jarzmik 1c8bc7b3de
ASoC: pxa: switch to new ac97 bus support
Switch to the new ac97 bus support in sound/ac97 instead of the legacy
snd_ac97 one.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 18:47:58 +01:00
Akshu Agrawal 8dcb0c90c6
ASoC: AMD: Fix simultaneous playback and capture on different channel
If capture and playback are started on different channel (I2S/BT)
there is a possibilty that channel information passed from machine driver
is overwritten before the configuration is done in dma driver.
Example:
113.597588: cz_max_startup: ---playback sets BT channel
113.597694: cz_dmic1_startup: ---capture sets I2S channel
113.597979: acp_dma_hw_params: ---configures capture for I2S channel
113.598114: acp_dma_hw_params: ---configures playback for I2S channel

This is fixed by having 2 separate instance for playback and capture.

Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 18:46:09 +01:00
Sébastien Szymanski 90a3b7f8ab
ASoC: cs4265: fix MMTLR Data switch control
The MMTLR bit is in the CS4265_SPDIF_CTL2 register at address 0x12 bit 0
and not at address 0x0 bit 1. Fix this.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2018-09-10 15:49:02 +01:00
Charles Keepax e36a1d0d24
ASoC: dapm: Add missing return value check for snd_soc_dapm_new_dai
snd_soc_dapm_new_dai may return an error pointer and currently this
isn't checked for in dapm_connect_dai_link_widgets. Add code to check
the return value and not add routes in that case.

Fixes: 778ff5bb86 ("ASoC: dapm: Move connection of CODEC to CODEC DAIs")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:43:50 +01:00
zhong jiang ca92cc4636
ASoC: skl-topology: Use kmemdup to replace kzalloc + memcpy
kmemdup has implemented the function that kzalloc() + memcpy() will
do. and we prefer to kmemdup rather than the open coded implementation.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:20:20 +01:00
zhong jiang 18fbe800e6
ASoC: q6core: Use kmemdup to replace kzalloc + memcpy
kmemdup has implemented the function that kzalloc() + memcpy() will
do. and we prefer to use the kmemdup rather than the open coded implementation.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:20:16 +01:00
Kuninori Morimoto fb77436a44
ASoC: txx9: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:14:47 +01:00
Kuninori Morimoto afa88ee37b
ASoC: sh: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:14:38 +01:00
Kuninori Morimoto 642a722d31
ASoC: omap: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:14:23 +01:00
Kuninori Morimoto bfacaa8c89
ASoC: nuc900: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:14:14 +01:00
Kuninori Morimoto 007ac42db9
ASoC: tscs454: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:13:58 +01:00
Kuninori Morimoto 4fe1984ebc
ASoC: rt5668: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:13:43 +01:00
Kuninori Morimoto 10ccaa39d7
ASoC: hdac_hda: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:13:27 +01:00
Kuninori Morimoto 570f75b935
ASoC: bcm: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:13:12 +01:00
Kuninori Morimoto e14614dc51
ASoC: atmel_ssc_dai: use devm_snd_soc_register_component()
Now we have devm_snd_soc_register_component().
Let's use it instead of snd_soc_register_component().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 15:10:50 +01:00
Akshu Agrawal 2a665dba01
ASoC: AMD: Ensure reset bit is cleared before configuring
HW register descriptions says:
"DMA Channel Reset...Software must confirm that this bit is
cleared before reprogramming any of the channel configuration registers."
There could be cases where dma stop errored out leaving dma channel
in reset state. We need to ensure that before the start of another dma,
channel is out of the reset state.

Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-10 12:20:52 +01:00