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30 commits

Author SHA1 Message Date
Mauro Carvalho Chehab
34962fb807 docs: Fix more broken references
As we move stuff around, some doc references are broken. Fix some of
them via this script:
	./scripts/documentation-file-ref-check --fix

Manually checked that produced results are valid.

Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-15 18:11:26 -03:00
Linus Torvalds
abf7dba7c4 Char/Misc driver patches for 4.18-rc1
Here is the "big" char and misc driver patches for 4.18-rc1.
 
 It's not a lot of stuff here, but there are some highlights:
 	- coreboot driver updates
 	- soundwire driver updates
 	- android binder updates
 	- fpga big sync, mostly documentation
 	- lots of minor driver updates
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the "big" char and misc driver patches for 4.18-rc1.

  It's not a lot of stuff here, but there are some highlights:

   - coreboot driver updates

   - soundwire driver updates

   - android binder updates

   - fpga big sync, mostly documentation

   - lots of minor driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (81 commits)
  vmw_balloon: fixing double free when batching mode is off
  MAINTAINERS: Add driver-api/fpga path
  fpga: clarify that unregister functions also free
  documentation: fpga: move fpga-region.txt to driver-api
  documentation: fpga: add bridge document to driver-api
  documentation: fpga: move fpga-mgr.txt to driver-api
  Documentation: fpga: move fpga overview to driver-api
  fpga: region: kernel-doc fixes
  fpga: bridge: kernel-doc fixes
  fpga: mgr: kernel-doc fixes
  fpga: use SPDX
  fpga: region: change api, add fpga_region_create/free
  fpga: bridge: change api, don't use drvdata
  fpga: manager: change api, don't use drvdata
  fpga: region: don't use drvdata in common fpga code
  Drivers: hv: vmbus: Removed an unnecessary cast from void *
  ver_linux: Drop redundant calls to system() to test if file is readable
  ver_linux: Move stderr redirection from function parameter to function body
  misc: IBM Virtual Management Channel Driver (VMC)
  rpmsg: Correct support for MODULE_DEVICE_TABLE()
  ...
2018-06-05 16:20:22 -07:00
Ulf Hansson
29ffcc88f2 soundwire: Respect all error codes from dev_pm_domain_attach()
The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-14 22:58:45 +02:00
Vinod Koul
c46302ec55 soundwire: intel: Add audio DAI ops
Add DAI registration and DAI ops for the Intel driver along with
callback for topology configuration.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:48:07 +05:30
Vinod Koul
37a2d22b40 soundwire: intel: Add stream initialization
Add Intel stream init routines which initialize the Physical
Data Interface (PDI), Audio Link Hub (ALH) and Audio shim.
Also add bank switch routines.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:48:07 +05:30
Vinod Koul
5d6b3c8ba1 soundwire: cdns: Add stream routines
Add support for Cadence stream initialization and implement
stream APIs.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:48:06 +05:30
Vinod Koul
07abeff1ef soundwire: cdns: Add port routines
Add support for Cadence port management and implement
master port ops.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:48:05 +05:30
Shreyas NC
c91605f489 soundwire: Remove cdns_master_ops
There can be instances where drivers using Cadence IP might want
to set sdw_master_ops differently per instance of it's use, so
remove the cdns_master_ops and export the APIs.

Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:48:05 +05:30
Sanyog Kale
5c3eb9f7bd soundwire: Add stream configuration APIs
Add APIs for prepare, enable, disable and de-prepare stream.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:47:06 +05:30
Sanyog Kale
99b8a5d608 soundwire: Add bank switch routine
SoundWire supports two registers banks. So, program the alternate bank
with new configuration and then performs bank switch.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:47:05 +05:30
Sanyog Kale
79df15b7d3 soundwire: Add helpers for ports operations
Add helpers to configure, prepare, enable, disable and
de-prepare ports.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:47:05 +05:30
Sanyog Kale
f8101c74aa soundwire: Add Master and Slave port programming
Master and Slave port registers need to be programmed for each port
used in a stream. Add the helpers for port register programming.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:47:04 +05:30
Sanyog Kale
bbe7379d80 soundwire: Add support for port management
Add Soundwire port data structures and APIS for initialization
and release of ports.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:47:04 +05:30
Sanyog Kale
89e590535f soundwire: Add support for SoundWire stream management
This patch adds APIs and relevant stream data structures
for initialization and release of stream.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-05-11 21:47:03 +05:30
Dan Carpenter
51c266561e soundwire: Fix a signedness bug
"ret" is an int and "buf" is a u8.  sdw_read() returns negative error
codes which are truncated to the u8, 0-255 range before being stored as
an int.  It means that "ret" can't be less than zero.

Fixes: b0a9c37b01 ("soundwire: Add slave status handling")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-22 16:45:26 +01:00
Vinod Koul
6c49b32d3c soundwire: select REGMAP_SOUNDWIRE
SoundWire bus needs to select the regmap support. So, add it

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09 17:01:16 +01:00
Shreyas NC
c22c0ae523 soundwire: Fix incorrect return value check
pm_runtime_get_sync will return negative values for error
and 0 or 1 for success. Update the error check accordingly.

Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 9d715fa005: ("soundwire: Add IO transfer")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09 17:01:16 +01:00
Wei Yongjun
80cd8f0175 soundwire: Fix typo in return value check of sdw_read()
Fix the typo, 'status' should be instead of 'status2'.

Fixes: b0a9c37b01 ("soundwire: Add slave status handling")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-08 17:53:21 +01:00
Colin Ian King
7094dc2b53 soundwire: intel: fix missing assignment to ret
Currently the return status ret is being checked but it has not been
updated since the previous check on ret. It appears that assignment of
ret from return status of the call to sdw_cdns_enable_interrupt was
accidentally ommited.  Fix this.

Detected by CoverityScan, CID#1463148 ("Logically dead code")

Fixes: 71bb8a1b05 ("soundwire: intel: Add Intel Master driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-08 17:53:21 +01:00
Colin Ian King
0132af05fc soundwire: fix sign extension when shifting buf[2] 24 places
The buf[2] left shift by 24 bits is promoted to int (32 bit signed)
and then signed-extended to unsigned long long. Hence if the upper
bit to buf[2] is set then all the upper bits of addr end up as 1.
Fix this by casting it to u64 before shifting it. Also replace the
unsigned long long casts to u64 casts to match the same type of
addr.

Detected by CoverityScan, CID#1463147 ("Unintended sign extension")

Fixes: d52d7a1be0 ("soundwire: Add Slave status handling helpers")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-08 17:53:20 +01:00
Vinod Koul
d62a7d41f3 soundwire: intel: Add Intel init module
The SoundWire Master is implemented as part of Audio controller in
Intel platforms. Add a init module which creates SoundWire Master
platform devices based on the links supported in the hardware.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:32:35 +01:00
Vinod Koul
71bb8a1b05 soundwire: intel: Add Intel Master driver
Some Intel platforms have SoundWire Master, so add Intel SoundWire
Master driver which uses Cadence module. This patch adds probe and
initialization routines for Intel Master driver.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:32:02 +01:00
Sanyog Kale
956baa1992 soundwire: cdns: Add sdw_master_ops and IO transfer support
Implement sdw_master_ops with support for xfer_msg, xfer_msg_defer
and reset_page_addr. Since Cadence module doesn't know the systems
it will be used, set the read_prop to the bus helper.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:31:33 +01:00
Vinod Koul
2f52a5177c soundwire: cdns: Add cadence library
Cadence IP implements SoundWire Master. Add base cadence library
initialization and interrupt handling

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:31:00 +01:00
Vinod Koul
b0a9c37b01 soundwire: Add slave status handling
Add status handling API sdw_handle_slave_status() to handle
Slave status changes.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:28:13 +01:00
Sanyog Kale
d52d7a1be0 soundwire: Add Slave status handling helpers
SoundWire Slaves report status to bus. Add helpers to handle
the status changes.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:27:33 +01:00
Vinod Koul
9d715fa005 soundwire: Add IO transfer
SoundWire bus supports read or write register(s) for SoundWire Slave
device. sdw_read() and sdw_write() APIs are provided for single
register read/write. sdw_nread() and sdw_nwrite() for operations on
contiguous registers.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:14:57 +01:00
Vinod Koul
56d4fe31af soundwire: Add MIPI DisCo property helpers
MIPI Discovery And Configuration (DisCo) Specification for SoundWire
specifies properties to be implemented for SoundWire Masters and
Slaves. The DisCo spec doesn't mandate these properties. However,
SDW bus cannot work without knowing these values.

The helper functions read the Master and Slave properties.
Implementers of Master or Slave drivers can use any of the below
three mechanisms:
   a) Use these APIs here as .read_prop() callback for Master
      and Slave
   b) Implement own methods and set those as .read_prop(), but invoke
      APIs in this file for generic read and override the values with
      platform specific data
   c) Implement ones own methods which do not use anything provided
      here

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:14:57 +01:00
Vinod Koul
7c3cd189b8 soundwire: Add Master registration
A Master adds a SoundWire bus instance which scans the firmware
provided for device description.

In this patch we scan ACPI namespaces and create SoundWire
Slave devices based on ACPI description

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:14:56 +01:00
Vinod Koul
9251345dca soundwire: Add SoundWire bus type
This adds the base SoundWire bus type, bus and driver registration.
along with changes to module device table for new SoundWire
device type.

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:14:56 +01:00