This patch adds CTU (Channel Transfer Unit) support for rsnd driver.
But, it does nothing to data at this point, but is required for MIX
support.

CTU design is a little different from other IPs (CTU0 is including
CTU00 - CTU03, and CTU1 is including CTU10 - CTU13, these have different
register mapping) We need to care about it on this driver.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current rsnd driver is assuming Audio DMAC / Audio DMAC peri peri
are used from SSI/SSIU/SRC/DVC. But we will add CTU/MIX to this driver.
Then, current DMA path searching method is not understandable, and good
enough for this purpose. This patch update DMA path search method, more
simply.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

This is cleanup for CTU/MIX support
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Sometimes we would like to get each module directly, especially data path
searching. this patch adds rsnd_io_to_mod() macro, and existing
rsnd_io_to_mod_xxx() use it.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current rsnd driver is using Audio DMAC (via DMAEngine) and
Audio DMAC peri peri (via original method), and usage of these DMAC
are different. Indicates its naming is useful for debugging.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

DVC doesn't support Gen1, check it beginning of probe
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

rsnd_dma_ops is used only from dma.c, rsnd.h doesn't need it.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

It can help for connection debug
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Sound L/R order of SSI is different from Linux sound data order.
So current rsnd driver is using DALIGN (= data align) to exchange data
align on SSIU. OTOH, CMD/SRC/SSIU have DALIGN register. Now inverted
sound volume will be exchanged if user used volume control on DVC.
Because SSIU which exchanges data align is located after DVC.

	MEM -> SRC -> DVC -> SSI

This patch exchanges data align SRC if possible
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current rsnd driver has rsnd_get_adinr_bit() to get bit settings for
ADINR (= Audio Information Register) of SSIU/SRC/DVC.
This patch adds rsnd_get_adinr_chan() to get channel settings for
ADINR (= Audio Information Register) of CTU/MIX.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Renesas sound IP (= SSIU/SRC/CTU/MIX/DVC) have ADINR
(= Audio Information Register), but some of them (= SSIU/SRC/DVC)
are for audio data bits, some of them (= CTU/MIX) are for audio data
channels.
Current rsnd driver is supporting SSIU/SRC/DVC, and these ADINR were
for bits. This patch rename rsnd_get_adinr() to rsnd_get_adinr_bit(),
and we will have rsnd_get_adinr_chan() for CTU/MIX.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Renesas SCU (Sampling Rate Convert Unit) includes SRC/CTU/MIX/DVC,
and these have similar register. xxxIR (Initialization Register) is one
of them. These xxxIR need be set to 1 during initialization.
Current rsnd driver has src.c / dvc.c, and we will have mix.c.
It is readable if these have same named function.
This patch adds rsnd_src_initialize_lock/unlock() and make sure it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Renesas SCU (Sampling Rate Convert Unit) includes SRC/CTU/MIX/DVC,
and these have similar register. xxxIR (Initialization Register) is one
of them. These xxxIR need be set to 1 during initialization.
Current rsnd driver has src.c / dvc.c, and we will have mix.c.
It is readable if these have same named function.
This patch adds rsnd_dvc_initialize_lock/unlock() and make sure it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current sound data route settings is done in dvc.c, and it doesn't care
about CTU/MIX at this poinnt, but we need to care about these.
OTOH, rsnd driver already has rsnd_path_xxx() functions for data path which
are good match for CTU/MIX/DVC path selectio.
This patch adds new rsnd_path_parse() to select sound data route which will
care about CTU/MIX/DVC path.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

parse/break is a little ambiguous/confusable name for rsnd module path.
Especially for CTU/MIX support. It was renamed to add/remove
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

'8a4e379b("ASoC: rsnd: remove io from rsnd_mod")' removed mod/io
relationship. rsnd_dai_connect() mod/io check is no longer needed
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Renesas SCU (Sampling Rate Convert Unit) includes SRC/CTU/MIX/DVC,
and these have similar register. xxxRSR (Software reset Register) is one
of them. These xxxRSR need be set to 1 to 0 when software reset.
Current rsnd driver has src.c / dvc.c, and we will have mix.c.
It is readable if these have same named function.
This patch adds rsnd_src_soft_reset() and make sure it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Renesas SCU (Sampling Rate Convert Unit) includes SRC/CTU/MIX/DVC,
and these have similar register. xxxRSR (Software reset Register) is one
of them. These xxxRSR need be set to 1 to 0 when software reset.
Current rsnd driver has src.c / dvc.c, and we will have mix.c.
It is readable if these have same named function.
This patch adds rsnd_dvc_soft_reset() and make sure it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

rsnd_src_nr() is used only from src.c
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

rsnd_dvc_nr() is used only from dvc.c
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

enabling to use same method for exception case is useful.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

We couldn't use SRC sync convert mode together with DVC,
but we can use workaround for it.
This patch adds workaround and can use SRC sync convert + DVC
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

'5451ea44 ("ASoC: rsnd: count each mod (SSI/SRC/DVC)")' counts each
module's callback status, but counts 1st callback only.
This patch fixup it. Otherwise, multi-called function will be trouble
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

based on datasheet
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

based on datasheet
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current checkpatch.pl indicates 'out of memory' message is unnecessary.
Let's remove it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current checkpatch.pl indicates 'out of memory' message is unnecessary.
Let's remove it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Current checkpatch.pl indicates 'out of memory' message is unnecessary.
Let's remove it
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

using common audio routing path method makes sense.
Let's use snd_soc_of_parse_audio_route/prefix.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Merge branch 'topic/of-name' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-rcar

Current ASoC can add name_prefix for DAPM, and it is necessary for
route settings. This patch adds snd_soc_of_parse_audio_prefix() for
this purpose. It will be used with snd_soc_of_parse_audio_routing().
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

rsnd_force_write() is similar to rsnd_write(),
but rsnd_force_write() write data to register even though
it is same value.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

regmap: Force write support

This allows users to use _update_bits() without the write suppression,
useful for some hardware.

regmap_fields_force_write() is similar to regmap_fields_write(),
but regmap_fields_force_write() write data to register even though
it is same value.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

regmap_write_bits() is similar to regmap_update_bits(),
but regmap_write_bits() write data to register even though
it is same value.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Sometimes we want to write data even though it doesn't change value.
Then, force_write option on _regmap_update_bits() helps this purpose.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull late x86 platform driver updates from Darren Hart:
 "The following came in a bit later and I wanted them to bake in next a
  few more days before submitting, thus the second pull.

  A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
  dell-laptop, a couple minor fixes, and some updated documentation in
  the dell-laptop comments.

  intel_pmc_ipc:
   - Add Intel Apollo Lake PMC IPC driver

  tc1100-wmi:
   - Delete an unnecessary check before the function call "kfree"

  dell-laptop:
   - Fix allocating & freeing SMI buffer page
   - Show info about WiGig and UWB in debugfs
   - Update information about wireless control"

* tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
  tc1100-wmi: Delete an unnecessary check before the function call "kfree"
  dell-laptop: Fix allocating & freeing SMI buffer page
  dell-laptop: Show info about WiGig and UWB in debugfs
  dell-laptop: Update information about wireless control

Pull more vfs updates from Al Viro:
 "Assorted VFS fixes and related cleanups (IMO the most interesting in
  that part are f_path-related things and Eric's descriptor-related
  stuff).  UFS regression fixes (it got broken last cycle).  9P fixes.
  fs-cache series, DAX patches, Jan's file_remove_suid() work"

[ I'd say this is much more than "fixes and related cleanups".  The
  file_table locking rule change by Eric Dumazet is a rather big and
  fundamental update even if the patch isn't huge.   - Linus ]

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
  9p: cope with bogus responses from server in p9_client_{read,write}
  p9_client_write(): avoid double p9_free_req()
  9p: forgetting to cancel request on interrupted zero-copy RPC
  dax: bdev_direct_access() may sleep
  block: Add support for DAX reads/writes to block devices
  dax: Use copy_from_iter_nocache
  dax: Add block size note to documentation
  fs/file.c: __fget() and dup2() atomicity rules
  fs/file.c: don't acquire files->file_lock in fd_install()
  fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
  vfs: avoid creation of inode number 0 in get_next_ino
  namei: make set_root_rcu() return void
  make simple_positive() public
  ufs: use dir_pages instead of ufs_dir_pages()
  pagemap.h: move dir_pages() over there
  remove the pointless include of lglock.h
  fs: cleanup slight list_entry abuse
  xfs: Correctly lock inode when removing suid and file capabilities
  fs: Call security_ops->inode_killpriv on truncate
  fs: Provide function telling whether file_remove_privs() will do anything
  ...

Commit 835a6a2f ("Bluetooth: Stop sabotaging list poisoning")
thought that the code was sabotaging the list poisoning when NULL'ing
out the list pointers and removed it.

But what was going on was that the bluetooth code was using NULL
pointers for the list as a way to mark it empty, and that commit just
broke it (and replaced the test with NULL with a "list_empty()" test on
a uninitialized list instead, breaking things even further).

So fix it all up to use the regular and real list_empty() handling
(which does not use NULL, but a pointer to itself), also making sure to
initialize the list properly (the previous NULL case was initialized
implicitly by the session being allocated with kzalloc())

This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
An.

[ I would normally expect to get this through the bt tree, but I'm going
  to release -rc1, so I'm just committing this directly   - Linus ]
Reported-and-tested-by: NJörg Otte <jrg.otte@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Original-by: NTedd Ho-Jeong An <tedd.an@intel.com>
Original-by: Marcel Holtmann <marcel@holtmann.org>:
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>