Commit Graph

200 Commits

Author SHA1 Message Date
Bjorn Andersson 64bf6b260e soc: qcom: smd-rpm: Add msm8998 compatible
Add the compatible for the RPM in MSM8998, so that rpm resources can be
made available.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-04-25 00:11:28 -05:00
Linus Torvalds 92589cbdda remoteproc updates for v4.17
This adds support for generating coredumps for remoteprocs using
 devcoredump, adds the Qualcomm sysmon driver for intra-remoteproc crash
 handling and a number of fixes in Qualcomm and IMX drivers.
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Merge tag 'rproc-v4.17' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:

 - add support for generating coredumps for remoteprocs using
   devcoredump

 - add the Qualcomm sysmon driver for intra-remoteproc crash handling

 - a number of fixes in Qualcomm and IMX drivers

* tag 'rproc-v4.17' of git://github.com/andersson/remoteproc:
  remoteproc: fix null pointer dereference on glink only platforms
  soc: qcom: qmi: add CONFIG_NET dependency
  remoteproc: imx_rproc: Slightly simplify code in 'imx_rproc_probe()'
  remoteproc: imx_rproc: Re-use existing error handling path in 'imx_rproc_probe()'
  remoteproc: imx_rproc: Fix an error handling path in 'imx_rproc_probe()'
  samples: Introduce Qualcomm QMI sample client
  remoteproc: qcom: Introduce sysmon
  remoteproc: Pass type of shutdown to subdev remove
  remoteproc: qcom: Register segments for core dump
  soc: qcom: mdt-loader: Return relocation base
  remoteproc: Rename "load_rsc_table" to "parse_fw"
  remoteproc: Add remote processor coredump support
  remoteproc: Remove null character write of shared mem
2018-04-10 12:09:27 -07:00
Linus Torvalds 38c23685b2 ARM: SoC driver updates for 4.17
The main addition this time around is the new ARM "SCMI" framework,
 which is the latest in a series of standards coming from ARM to do power
 management in a platform independent way. This has been through many
 review cycles, and it relies on a rather interesting way of using the
 mailbox subsystem, but in the end I agreed that Sudeep's version was
 the best we could do after all.
 
 Other changes include:
 
 - the ARM CCN driver is moved out of drivers/bus into drivers/perf,
   which makes more sense. Similarly, the performance monitoring
   portion of the CCI driver are moved the same way and cleaned up
   a little more.
 
 - a series of updates to the SCPI framework
 
 - support for the Mediatek mt7623a SoC in drivers/soc
 
 - support for additional NVIDIA Tegra hardware in drivers/soc
 
 - a new reset driver for Socionext Uniphier
 
 - lesser bug fixes in drivers/soc, drivers/tee, drivers/memory, and
   drivers/firmware and drivers/reset across platforms
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "The main addition this time around is the new ARM "SCMI" framework,
  which is the latest in a series of standards coming from ARM to do
  power management in a platform independent way.

  This has been through many review cycles, and it relies on a rather
  interesting way of using the mailbox subsystem, but in the end I
  agreed that Sudeep's version was the best we could do after all.

  Other changes include:

   - the ARM CCN driver is moved out of drivers/bus into drivers/perf,
     which makes more sense. Similarly, the performance monitoring
     portion of the CCI driver are moved the same way and cleaned up a
     little more.

   - a series of updates to the SCPI framework

   - support for the Mediatek mt7623a SoC in drivers/soc

   - support for additional NVIDIA Tegra hardware in drivers/soc

   - a new reset driver for Socionext Uniphier

   - lesser bug fixes in drivers/soc, drivers/tee, drivers/memory, and
     drivers/firmware and drivers/reset across platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (87 commits)
  reset: uniphier: add ethernet reset control support for PXs3
  reset: stm32mp1: Enable stm32mp1 reset driver
  dt-bindings: reset: add STM32MP1 resets
  reset: uniphier: add Pro4/Pro5/PXs2 audio systems reset control
  reset: imx7: add 'depends on HAS_IOMEM' to fix unmet dependency
  reset: modify the way reset lookup works for board files
  reset: add support for non-DT systems
  clk: scmi: use devm_of_clk_add_hw_provider() API and drop scmi_clocks_remove
  firmware: arm_scmi: prevent accessing rate_discrete uninitialized
  hwmon: (scmi) return -EINVAL when sensor information is unavailable
  amlogic: meson-gx-socinfo: Update soc ids
  soc/tegra: pmc: Use the new reset APIs to manage reset controllers
  soc: mediatek: update power domain data of MT2712
  dt-bindings: soc: update MT2712 power dt-bindings
  cpufreq: scmi: add thermal dependency
  soc: mediatek: fix the mistaken pointer accessed when subdomains are added
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7623A SoC
  soc: mediatek: avoid hardcoded value with bus_prot_mask
  dt-bindings: soc: add header files required for MT7623A SCPSYS dt-binding
  dt-bindings: soc: add SCPSYS binding for MT7623 and MT7623A SoC
  ...
2018-04-05 21:29:35 -07:00
Arnd Bergmann dea4bd1975 soc: qcom: qmi: add CONFIG_NET dependency
Access to the socket API and the root network namespace is only available
when networking is enabled:

ERROR: "kernel_sendmsg" [drivers/soc/qcom/qmi_helpers.ko] undefined!
ERROR: "sock_release" [drivers/soc/qcom/qmi_helpers.ko] undefined!
ERROR: "sock_create_kern" [drivers/soc/qcom/qmi_helpers.ko] undefined!
ERROR: "kernel_getsockname" [drivers/soc/qcom/qmi_helpers.ko] undefined!
ERROR: "init_net" [drivers/soc/qcom/qmi_helpers.ko] undefined!
ERROR: "kernel_recvmsg" [drivers/soc/qcom/qmi_helpers.ko] undefined!

Adding a dependency on CONFIG_NET lets us build it in all randconfig
builds.

Fixes: 9b8a11e826 ("soc: qcom: Introduce QMI encoder/decoder")
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-03-27 13:43:29 -07:00
Bjorn Andersson 90c29ed762 soc: qcom: wcnss_ctrl: Fix increment in NV upload
hdr.len includes both the size of the header and the fragment, so using
this when stepping through the firmware causes us to skip 16 bytes every
chunk of 3072 bytes; causing only the first fragment to actually be
valid data.

Instead use fragment size steps through the firmware blob.

Fixes: ea7a1f275c ("soc: qcom: Introduce WCNSS_CTRL SMD client")
Reported-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-03-08 18:40:35 -06:00
Bjorn Andersson fa65f80451 soc: qcom: rmtfs-mem: Add support for assigning memory to remote
On some platform the remote processor's memory map is not statically
configured in TrustZone, so each memory region that is to be accessed by
the remote needs a call into TrustZone to set up the remote's
permissions.

Implement this for the rmtfs memory driver, to give the modem on 8996
access to the shared file system buffers.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-03-08 18:40:24 -06:00
Denys Vlasenko 9b2c45d479 net: make getname() functions return length rather than use int* parameter
Changes since v1:
Added changes in these files:
    drivers/infiniband/hw/usnic/usnic_transport.c
    drivers/staging/lustre/lnet/lnet/lib-socket.c
    drivers/target/iscsi/iscsi_target_login.c
    drivers/vhost/net.c
    fs/dlm/lowcomms.c
    fs/ocfs2/cluster/tcp.c
    security/tomoyo/network.c

Before:
All these functions either return a negative error indicator,
or store length of sockaddr into "int *socklen" parameter
and return zero on success.

"int *socklen" parameter is awkward. For example, if caller does not
care, it still needs to provide on-stack storage for the value
it does not need.

None of the many FOO_getname() functions of various protocols
ever used old value of *socklen. They always just overwrite it.

This change drops this parameter, and makes all these functions, on success,
return length of sockaddr. It's always >= 0 and can be differentiated
from an error.

Tests in callers are changed from "if (err)" to "if (err < 0)", where needed.

rpc_sockname() lost "int buflen" parameter, since its only use was
to be passed to kernel_getsockname() as &buflen and subsequently
not used in any way.

Userspace API is not changed.

    text    data     bss      dec     hex filename
30108430 2633624  873672 33615726 200ef6e vmlinux.before.o
30108109 2633612  873672 33615393 200ee21 vmlinux.o

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: David S. Miller <davem@davemloft.net>
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-bluetooth@vger.kernel.org
CC: linux-decnet-user@lists.sourceforge.net
CC: linux-wireless@vger.kernel.org
CC: linux-rdma@vger.kernel.org
CC: linux-sctp@vger.kernel.org
CC: linux-nfs@vger.kernel.org
CC: linux-x25@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-12 14:15:04 -05:00
Bjorn Andersson 4dd27f544c soc: qcom: mdt-loader: Return relocation base
In order to implement support for grabbing core dumps in remoteproc it's
necessary to know the relocated base of the image, as the offsets from
the virtual memory base might not be based on the physical address.

Return the adjusted physical base address to the caller.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-02-12 11:05:38 -08:00
Markus Elfring c01fc2275e soc: qcom: smp2p: Use common error handling code in qcom_smp2p_probe()
* Add a jump target so that a specific error message is stored only once
  at the end of this function implementation.

* Replace two calls of the function "dev_err" by goto statements.

* Adjust two condition checks.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2018-01-01 00:29:09 -06:00
Bjorn Andersson 3830d0771e soc: qcom: Introduce QMI helpers
Drivers that needs to communicate with a remote QMI service all has to
perform the operations of discovering the service, encoding and decoding
the messages and operate the socket. This introduces an abstraction for
these common operations, reducing most of the duplication in such cases.

Acked-by: Chris Lew <clew@codeaurora.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-12-20 15:38:34 -06:00
Bjorn Andersson 9b8a11e826 soc: qcom: Introduce QMI encoder/decoder
Add the helper library for encoding and decoding QMI encoded messages.
The implementation is taken from lib/qmi_encdec.c of the Qualcomm kernel
(msm-3.18).

Modifications has been made to the public API, source buffers has been
made const and the debug-logging part was omitted, for now.

Acked-by: Chris Lew <clew@codeaurora.org>
Tested-by: Chris Lew <clew@codeaurora.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-12-20 15:38:34 -06:00
Bjorn Andersson e71802647b soc: qcom: smp2p: Access APCS as mailbox client
Attempt to acquire the APCS IPC through the mailbox framework and fall
back to the old syscon based approach, to allow us to move away from
using the syscon.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-12-20 15:38:34 -06:00
Jesse Chan 3b229bdb54 soc: qcom: rmtfs_mem: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
This change resolves a new compile-time warning
when built as a loadable module:

WARNING: modpost: missing MODULE_LICENSE() in drivers/soc/qcom/rmtfs_mem.o
see include/linux/module.h for more information

This adds the license as "GPL v2", which matches the header of the file.

MODULE_DESCRIPTION and MODULE_AUTHOR are also added.

Signed-off-by: Jesse Chan <jc@linux.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-12-20 15:38:34 -06:00
Johan Hovold 8804517e9f soc: qcom: smsm: fix child-node lookup
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.

Note that the original premature free of the parent node has already
been fixed separately.

Also note that this pattern of looking up the first child node with a
given property is rare enough that a generic helper is probably not
warranted.

Fixes: c97c4090ff ("soc: qcom: smsm: Add driver for Qualcomm SMSM")
Fixes: 3e8b554114 ("soc: qcom: smsm: fix of_node refcnting problem")
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-12-20 15:38:34 -06:00
Linus Torvalds cf9b0772f2 ARM: SoC driver updates for v4.15
This branch contains platform-related driver updates for ARM and ARM64,
 these are the areas that bring the changes:
 
 New drivers:
  - Driver support for Renesas R-Car V3M (R8A77970)
  - Power management support for Amlogic GX
  - A new driver for the Tegra BPMP thermal sensor
  - A new bus driver for Technologic Systems NBUS
 
 Changes for subsystems that prefer to merge through arm-soc:
  - The usual updates for reset controller drivers from Philipp Zabel,
    with five added drivers for SoCs in the arc, meson, socfpa, uniphier
    and mediatek families.
  - Updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
    Heiner Kallweit and Lorenzo Pieralisi.
 
 Changes specific to some ARM-based SoC
  - The Freescale/NXP DPAA QBMan drivers from PowerPC can now work
    on ARM as well.
  - Several changes for power management on Broadcom SoCs
  - Various improvements on Qualcomm, Broadcom, Amlogic, Atmel, Mediatek
  - Minor Cleanups for Samsung, TI OMAP SoCs
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "This branch contains platform-related driver updates for ARM and
  ARM64, these are the areas that bring the changes:

  New drivers:

   - driver support for Renesas R-Car V3M (R8A77970)

   - power management support for Amlogic GX

   - a new driver for the Tegra BPMP thermal sensor

   - a new bus driver for Technologic Systems NBUS

  Changes for subsystems that prefer to merge through arm-soc:

   - the usual updates for reset controller drivers from Philipp Zabel,
     with five added drivers for SoCs in the arc, meson, socfpa,
     uniphier and mediatek families

   - updates to the ARM SCPI and PSCI frameworks, from Sudeep Holla,
     Heiner Kallweit and Lorenzo Pieralisi

  Changes specific to some ARM-based SoC

   - the Freescale/NXP DPAA QBMan drivers from PowerPC can now work on
     ARM as well

   - several changes for power management on Broadcom SoCs

   - various improvements on Qualcomm, Broadcom, Amlogic, Atmel,
     Mediatek

   - minor Cleanups for Samsung, TI OMAP SoCs"

[ NOTE! This doesn't work without the previous ARM SoC device-tree pull,
  because the R8A77970 driver is missing a header file that came from
  that pull.

  The fact that this got merged afterwards only fixes it at this point,
  and bisection of that driver will fail if/when you walk into the
  history of that driver.           - Linus ]

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (96 commits)
  soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloader
  bus: add driver for the Technologic Systems NBUS
  memory: omap-gpmc: Remove deprecated gpmc_update_nand_reg()
  soc: qcom: remove unused label
  soc: amlogic: gx pm domain: add PM and OF dependencies
  drivers/firmware: psci_checker: Add missing destroy_timer_on_stack()
  dt-bindings: power: add amlogic meson power domain bindings
  soc: amlogic: add Meson GX VPU Domains driver
  soc: qcom: Remote filesystem memory driver
  dt-binding: soc: qcom: Add binding for rmtfs memory
  of: reserved_mem: Accessor for acquiring reserved_mem
  of/platform: Generalize /reserved-memory handling
  soc: mediatek: pwrap: fix fatal compiler error
  soc: mediatek: pwrap: fix compiler errors
  arm64: mediatek: cleanup message for platform selection
  soc: Allow test-building of MediaTek drivers
  soc: mediatek: place Kconfig for all SoC drivers under menu
  soc: mediatek: pwrap: add support for MT7622 SoC
  soc: mediatek: pwrap: add common way for setup CS timing extenstion
  soc: mediatek: pwrap: add MediaTek MT6380 as one slave of pwrap
  ..
2017-11-16 16:05:01 -08:00
Arnd Bergmann d771d62e31 soc: qcom: remove unused label
The newly added driver comes with a harmless warning:

drivers/soc/qcom/rmtfs_mem.c: In function 'qcom_rmtfs_mem_probe':
drivers/soc/qcom/rmtfs_mem.c:211:1: error: label 'remove_cdev' defined but not used [-Werror=unused-label]

This removes the unused label to avoid the warning.

Fixes: 702baebb8e00 ("soc: qcom: Remote filesystem memory driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-11-03 13:24:56 +01:00
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Bjorn Andersson d1de6d6c63 soc: qcom: Remote filesystem memory driver
The Qualcomm remote file system protocol is used by certain remoteprocs,
in particular the modem, to read and write persistent storage in
platforms where only the application CPU has physical storage access.

The protocol is based on a set of QMI-encoded control-messages and a
shared memory buffer for exchaning the data. This driver implements the
latter, providing the user space service access to the carved out chunk
of memory.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-22 05:06:34 -05:00
Chris Lew e691b48dcc soc: qcom: smem: Increase the number of hosts
Increase the maximum number of hosts in a system to 10.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 23:48:27 -05:00
Chris Lew 5b39406761 soc: qcom: smem: Support dynamic item limit
In V12 SMEM, SBL writes SMEM parameter information after the TOC. Use
the SBL provided item count as the max item number.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 23:48:27 -05:00
Chris Lew d52e404874 soc: qcom: smem: Support global partition
SMEM V12 creates a global partition to allocate global smem items from
instead of a global heap. The global partition has the same structure as
a private partition.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 23:48:27 -05:00
Chris Lew dcc0967dd7 soc: qcom: smem: Read version from the smem header
The SMEM header structure includes the version information. Read the
version directly from the header instead of getting an item from the
global heap.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 23:48:27 -05:00
Chris Lew a216000f01 soc: qcom: smem: Use le32_to_cpu for comparison
Endianness can vary in the system, add le32_to_cpu when comparing
partition sizes from smem.

Signed-off-by: Chris Lew <clew@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 23:48:27 -05:00
Bjorn Andersson c7c1dc3587 soc: qcom: smem: Support getting cached entries
On msm8996 cached SMEM items are used for storing the GLINK FIFOs, so
for items not found in the uncached list we need to also search the
cased list for these items.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 16:58:11 -05:00
Bjorn Andersson 01f1415444 soc: qcom: smem: Rename "uncached" accessors
In preparation for adding accessors for "cached" entries rename the
"uncached" accessors. Also rename "first" cached entry to "last", as
the cached list grows backwards.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-10-11 16:58:11 -05:00
Linus Torvalds ae46654bcf ARM: SoC driver updates for v4.14
This branch contains platform-related driver updates for ARM and ARM64.
 
 Among them:
 
  - Reset driver updates:
   + New API for dealing with arrays of resets
   + Make unimplemented {de,}assert return success on shared resets
   + MSDKv1 driver
   + Removal of obsolete Gemini reset driver
   + Misc updates for sunxi and Uniphier
 
  - SoC drivers:
   + Platform SoC driver registration on Tegra
   + Shuffle of Qualcomm drivers into a submenu
   + Allwinner A64 support for SRAM
   + Renesas R-Car R3 support
   + Power domains for Rockchip RK3366
 
  - Misc updates and smaller fixes for TEE and memory driver subsystems
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "This branch contains platform-related driver updates for ARM and ARM64.

  Among them:

   - Reset driver updates:
     + New API for dealing with arrays of resets
     + Make unimplemented {de,}assert return success on shared resets
     + MSDKv1 driver
     + Removal of obsolete Gemini reset driver
     + Misc updates for sunxi and Uniphier

   - SoC drivers:
     + Platform SoC driver registration on Tegra
     + Shuffle of Qualcomm drivers into a submenu
     + Allwinner A64 support for SRAM
     + Renesas R-Car R3 support
     + Power domains for Rockchip RK3366

   - Misc updates and smaller fixes for TEE and memory driver
     subsystems"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set
  soc/tegra: fuse: Add missing semi-colon
  soc/tegra: Restrict SoC device registration to Tegra
  drivers: soc: sunxi: add support for A64 and its SRAM C
  drivers: soc: sunxi: add support for remapping func value to reg value
  drivers: soc: sunxi: fix error processing on base address when claiming
  dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
  bus: sunxi-rsb: Enable by default for ARM64
  soc/tegra: Register SoC device
  firmware: tegra: set drvdata earlier
  memory: Convert to using %pOF instead of full_name
  soc: Convert to using %pOF instead of full_name
  bus: Convert to using %pOF instead of full_name
  firmware: Convert to using %pOF instead of full_name
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC
  soc: mediatek: add header files required for MT7622 SCPSYS dt-binding
  soc: mediatek: reduce code duplication of scpsys_probe across all SoCs
  dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC
  reset: uniphier: add analog amplifiers reset control
  reset: uniphier: add video input subsystem reset control
  ...
2017-09-10 20:40:00 -07:00
Bjorn Andersson 445c2410a4 soc: qcom: mdt_loader: Use request_firmware_into_buf()
By switching to the request_firmware_into_buf() we load the segment data
straight into the preallocated buffers, reducing the need for allocating
scratch buffers for these. In particular the modem firmware consists of
multiple segments in the range 5-15MB, making this worth while.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 17:41:23 -05:00
Srinivas Kandagatla 2a464815d3 soc: qcom: bring all qcom drivers into a submenu
As the number of qcom drivers increase, entries in SOC menu looks
scattered with other SOC drivers. Make a submenu for Qcom drivers
to make it visibly clear while selecting qcom SOC specific drivers.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 14:39:17 -05:00
Rob Clark b833990901 soc: qcom: wcnss_ctrl: add missing MODULE_DEVICE_TABLE()
This fixes a problem of wifi module not loading on db410c.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 14:37:42 -05:00
Rob Clark 3e8b554114 soc: qcom: smsm: fix of_node refcnting problem
of_find_node_with_property() drops the reference to the 'from' node,
which eventually (after enough -EPROBE_DEFERs) drops the last reference
to the node causing all sorts of fun problems, and this nice splat.

  BUG: sleeping function called from invalid context at ../kernel/locking/mutex.c:747
  in_atomic(): 1, irqs_disabled(): 128, pid: 33, name: kworker/0:1
  4 locks held by kworker/0:1/33:
   #0:  ("events"){.+.+.+}, at: [<ffff0000080fa91c>] process_one_work+0x1a4/0x728
   #1:  (deferred_probe_work){+.+.+.}, at: [<ffff0000080fa91c>] process_one_work+0x1a4/0x728
   #2:  (&dev->mutex){......}, at: [<ffff000008676078>] __device_attach+0x30/0x168
   #3:  (devtree_lock){......}, at: [<ffff000008828fd0>] of_find_node_with_property+0x30/0xe0
  irq event stamp: 18976
  hardirqs last  enabled at (18975): [<ffff00000815794c>] __down_trylock_console_sem+0x74/0xb8
  hardirqs last disabled at (18976): [<ffff0000089e26d4>] _raw_spin_lock_irqsave+0x2c/0x78
  softirqs last  enabled at (16880): [<ffff0000080e0f00>] __do_softirq+0x580/0x640
  softirqs last disabled at (16871): [<ffff0000080e13a4>] irq_exit+0xe4/0x138
  CPU: 0 PID: 33 Comm: kworker/0:1 Tainted: G            E   4.12.0-rc5+ #1455
  Hardware name: qualcomm dragonboard410c/dragonboard410c, BIOS 2017.07-rc1-00234-g22fa70a-dirty 06/26/2017
  Workqueue: events deferred_probe_work_func
  Call trace:
  [<ffff000008089ee0>] dump_backtrace+0x0/0x230
  [<ffff00000808a134>] show_stack+0x24/0x30
  [<ffff0000084e1944>] dump_stack+0xac/0xe8
  [<ffff00000810d7e0>] ___might_sleep+0x150/0x230
  [<ffff00000810d918>] __might_sleep+0x58/0x90
  [<ffff0000089dde18>] __mutex_lock+0x50/0x870
  [<ffff0000089de674>] mutex_lock_nested+0x3c/0x50
  [<ffff000008388ae0>] kernfs_remove+0x30/0x50
  [<ffff00000838b720>] sysfs_remove_dir+0x58/0x70
  [<ffff0000084e393c>] kobject_del+0x1c/0x58
  [<ffff0000084e374c>] kobject_put+0xb4/0x208
  [<ffff00000882c364>] of_node_put+0x24/0x30
  [<ffff000008829018>] of_find_node_with_property+0x78/0xe0
  [<ffff000000aff5f4>] qcom_smsm_probe+0x194/0x720 [smsm]
  [<ffff0000086793b4>] platform_drv_probe+0x74/0x110
  [<ffff0000086765bc>] driver_probe_device+0x2b4/0x420
  [<ffff000008676920>] __device_attach_driver+0xd0/0x150
  [<ffff000008673e78>] bus_for_each_drv+0x68/0xa8
  [<ffff00000867611c>] __device_attach+0xd4/0x168
  [<ffff000008676a1c>] device_initial_probe+0x24/0x30
  [<ffff000008675380>] bus_probe_device+0xa0/0xa8
  [<ffff000008675948>] deferred_probe_work_func+0xb8/0xf8
  [<ffff0000080fa9d4>] process_one_work+0x25c/0x728
  [<ffff0000080faef4>] worker_thread+0x54/0x3d8
  [<ffff0000081031d8>] kthread+0x110/0x140
  [<ffff000008082d90>] ret_from_fork+0x10/0x40
  OF: ERROR: Bad of_node_put() on /smsm
  CPU: 0 PID: 33 Comm: kworker/0:1 Tainted: G        W   E   4.12.0-rc5+ #1455
  Hardware name: qualcomm dragonboard410c/dragonboard410c, BIOS 2017.07-rc1-00234-g22fa70a-dirty 06/26/2017
  Workqueue: events deferred_probe_work_func

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 14:37:42 -05:00
Bjorn Andersson c4d77d5fcd soc: qcom: GLINK SSR notifier
This driver register as a subsystem restart notifier and will send out
notifications to remote processors that has opened the "glink_ssr" GLINK
channel.

This mechanism is used to signal any GLINK participants that a 3rd party
is gone and that the communication state has to be reset; i.e. that read
and write pointers of the GLINK FIFOs are stale.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-08-02 12:43:29 -07:00
Jonathan Neuschäfer 35dfa3efea soc: qcom: smsm: Improve error handling, quiesce probe deferral
Don't use size if info indicates an error condition. Previously a
non-ENOENT error (such as -EPROBE_DEFER) would lead to size being used
even though it hadn't necessarily been initialized in qcom_smem_get.

Don't print an error message in the -EPROBE_DEFER case.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-06-05 21:50:44 -05:00
Bjorn Andersson 2b62425045 soc: qcom: smd-rpm: Add msm8996 compatibility
With the RPM driver transitioned to RPMSG we can reuse the SMD-RPM
driver ontop of GLINK for 8996, without any modifications.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-28 17:58:08 -07:00
Bjorn Andersson 395a48053a soc: qcom: smd: Remove standalone driver
Remove the standalone SMD implementation as we have transitioned the
client drivers to use the RPMSG based one.

Also remove all dependencies on QCOM_SMD from Kconfig files, in order to
keep them selectable in the absence of the removed symbol.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-28 17:58:07 -07:00
Bjorn Andersson 5052de8def soc: qcom: smd: Transition client drivers from smd to rpmsg
By moving these client drivers to use RPMSG instead of the direct SMD
API we can reuse them ontop of the newly added GLINK wire-protocol
support found in the 820 and 835 Qualcomm platforms.

As the new (RPMSG-based) and old SMD implementations are mutually
exclusive we have to change all client drivers in one commit, to make
sure we have a working system before and after this transition.

Acked-by: Andy Gross <andy.gross@linaro.org>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-28 17:58:07 -07:00
Bjorn Andersson 01625cc5e6 remoteproc: qcom: mdt_loader: Use signed type for offset
In the transition from using rproc_da_to_va(), the type of the load
offset became unsigned. This causes the subsequent check to let negative
values less than p_memsz + mem_size through and we write outside of the
buffer.

Change the type back to a signed value to catch this.

Fixes: 7f0dd07a9b ("remoteproc: qcom: mdt_loader: Refactor MDT loader")
Fixes: e7fd252262 ("remoteproc: qcom: q6v5: Decouple driver from MDT loader")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-02-22 02:07:13 -08:00
Bjorn Andersson 2aad40d911 remoteproc: Move qcom_mdt_loader into drivers/soc/qcom
With the remoteproc parts cleaned out of the MDT loader we can move it
to drivers/soc/qcom.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-02-06 08:57:25 -08:00
Bjorn Andersson 4e21a95d7f soc: qcom: smd: Reset rx tail rather than tx
The local end of each SMD channel is responsible for updating the tx
head and the rx tail, as such we should not touch the tx tail during a
reset.

Reported-by: Jeremy McNicoll <jmcnicol@redhat.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-09-01 14:19:50 -05:00
Bjorn Andersson da0573026c soc: qcom: smd: Represent smd edges as devices
By representing each edge as its own device the channels are no longer
tied to being parented by the same smd device and as such an edge can
live as children of e.g. remoteproc instances.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23 15:46:33 -05:00
Bjorn Andersson 381a0b4ce4 soc: qcom: smd: Request irqs after parsing properties
The code exectued by the interrupt handler depends on the values parsed
after requesting the irq, just to be save we should therefor move the
request_irq() call to be done after parsing the properties.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23 15:46:33 -05:00
Bjorn Andersson 0a0c08cae0 soc: qcom: smd: Simplify multi channel handling
Multi-channel clients split between several drivers need a way to close
individual channels, as these drivers might be removed individually.
With this in place the responsibility of closing additionally opened
channels to the client as well only concerning smd about the primary
channel.

With this approach we will only trigger removal of SMD devices based on
the state of the primary channel, however we get in sync with how rpmsg
works.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23 15:46:32 -05:00
Stephen Boyd 951a5af922 soc: qcom: smem: Silence probe defer error
If we fail to get the hwspinlock due to probe defer, we shouldn't
print an error message. Just be silent in this case.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23 15:46:32 -05:00
Bjorn Andersson 3680a4a974 soc: qcom: Update properties for smem state referencing
Update the property names to match device tree bindings, the correct
values should be qcom,smem-states and qcom,smem-state-names.

Also update the #qcom,smem-state-cells for consistency, before we merge
any users of these properties.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-06-24 22:53:41 -05:00
Bjorn Andersson e7306dd751 soc: qcom: smp2p: Drop io-accessors
SMEM is now mapped write-combine and we can use memcpy to access the
name of the entires.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-06-24 13:34:00 -05:00
Bjorn Andersson 63af8e44ea soc: qcom: smp2p: Correct addressing of outgoing value
The valid_entries index should not be incremented until after we have
acquired the pointer to the value, or we will read and write data one
item off.

Fixes: 50e9964141 ("soc: qcom: smp2p: Qualcomm Shared Memory Point to Point")
Cc: stable@vger.kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-06-24 13:34:00 -05:00
Bjorn Andersson 6be2b3d084 soc: qcom: wcnss_ctrl: Make wcnss_ctrl parent the other components
We need the signal from wcnss_ctrl indicating that the firmware is up
and running before we can communicate with the other components of the
chip. So make these other components children of the wcnss_ctrl device,
so they can be probed in order.

The process seems to take between 1/2-5 seconds, so this is done in a
worker, instead of holding up the probe.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-06-24 13:34:00 -05:00
Linus Torvalds a7fd20d1c4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Highlights:

   1) Support SPI based w5100 devices, from Akinobu Mita.

   2) Partial Segmentation Offload, from Alexander Duyck.

   3) Add GMAC4 support to stmmac driver, from Alexandre TORGUE.

   4) Allow cls_flower stats offload, from Amir Vadai.

   5) Implement bpf blinding, from Daniel Borkmann.

   6) Optimize _ASYNC_ bit twiddling on sockets, unless the socket is
      actually using FASYNC these atomics are superfluous.  From Eric
      Dumazet.

   7) Run TCP more preemptibly, also from Eric Dumazet.

   8) Support LED blinking, EEPROM dumps, and rxvlan offloading in mlx5e
      driver, from Gal Pressman.

   9) Allow creating ppp devices via rtnetlink, from Guillaume Nault.

  10) Improve BPF usage documentation, from Jesper Dangaard Brouer.

  11) Support tunneling offloads in qed, from Manish Chopra.

  12) aRFS offloading in mlx5e, from Maor Gottlieb.

  13) Add RFS and RPS support to SCTP protocol, from Marcelo Ricardo
      Leitner.

  14) Add MSG_EOR support to TCP, this allows controlling packet
      coalescing on application record boundaries for more accurate
      socket timestamp sampling.  From Martin KaFai Lau.

  15) Fix alignment of 64-bit netlink attributes across the board, from
      Nicolas Dichtel.

  16) Per-vlan stats in bridging, from Nikolay Aleksandrov.

  17) Several conversions of drivers to ethtool ksettings, from Philippe
      Reynes.

  18) Checksum neutral ILA in ipv6, from Tom Herbert.

  19) Factorize all of the various marvell dsa drivers into one, from
      Vivien Didelot

  20) Add VF support to qed driver, from Yuval Mintz"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1649 commits)
  Revert "phy dp83867: Fix compilation with CONFIG_OF_MDIO=m"
  Revert "phy dp83867: Make rgmii parameters optional"
  r8169: default to 64-bit DMA on recent PCIe chips
  phy dp83867: Make rgmii parameters optional
  phy dp83867: Fix compilation with CONFIG_OF_MDIO=m
  bpf: arm64: remove callee-save registers use for tmp registers
  asix: Fix offset calculation in asix_rx_fixup() causing slow transmissions
  switchdev: pass pointer to fib_info instead of copy
  net_sched: close another race condition in tcf_mirred_release()
  tipc: fix nametable publication field in nl compat
  drivers: net: Don't print unpopulated net_device name
  qed: add support for dcbx.
  ravb: Add missing free_irq() calls to ravb_close()
  qed: Remove a stray tab
  net: ethernet: fec-mpc52xx: use phy_ethtool_{get|set}_link_ksettings
  net: ethernet: fec-mpc52xx: use phydev from struct net_device
  bpf, doc: fix typo on bpf_asm descriptions
  stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set
  net: ethernet: fs-enet: use phy_ethtool_{get|set}_link_ksettings
  net: ethernet: fs-enet: use phydev from struct net_device
  ...
2016-05-17 16:26:30 -07:00
Jisheng Zhang 1e712d9be8 soc: qcom: spm: Use const and __initconst for qcom_cpuidle_ops
The qcom_cpuidle_ops structures is not over-written, so add "const"
qualifier and replace __initdata with __initconst.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
2016-04-20 06:59:41 +02:00
Bjorn Andersson b853cb9628 soc: qcom: smd: Make callback pass channel reference
By passing the smd channel reference to the callback, rather than the
smd device, we can open additional smd channels from sub-devices of smd
devices.

Also updates the two smd clients today found in mainline.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-04-19 21:55:12 -05:00
Bjorn Andersson afd356dfb3 soc: qcom: smem: Use write-combine remap for SMEM
Mapping the SMEM region as write combine makes the contiguous writes
in SMD perform better and also allows us to do unaligned read and writes
on ARM64.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-04-19 21:55:06 -05:00
Bjorn Andersson 028021d29e soc: qcom: smd: Support opening additional channels
With the qcom_smd_open_channel() API we allow SMD devices to open
additional SMD channels, to allow implementation of multi-channel SMD
devices - like Bluetooth.

Channels are opened from the same edge as the calling SMD device is tied
to.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-03-30 17:21:12 -05:00
Bjorn Andersson d5933855c0 soc: qcom: smd: Support multiple channels per sdev
This patch allows chaining additional channels to a SMD device, enabling
implementation of multi-channel SMD devies - like Bluetooth.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-03-30 17:21:03 -05:00
Bjorn Andersson 3fd3f2fd86 soc: qcom: smd: Refactor channel open and close handling
Refactor opening and closing of channels into two separate functions
instead of open coding this in the various places.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-03-30 17:20:57 -05:00
Bjorn Andersson 995b170aea soc: qcom: smd: Split discovery and state change work
Split the two steps of channel discovery and state change handling into
two different workers. This allows for new channels to be found while
we're are probing, which is required as we introduce multi-channel
support.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-03-30 17:20:51 -05:00
Bjorn Andersson 39f0db298e soc: qcom: smd: Introduce callback setter
Introduce a setter for the callback function pointer to clarify the
locking around the operation and to reduce some duplication.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-03-30 17:20:43 -05:00
Lina Iyer 3b904b046c drivers: qcom: spm: avoid module usage in non-modular SPM driver
SPM driver provides cpuidle support on some QC SoC's. The functionality
is non-modular and there is no need for module support. Convert module
platform init to builtin platform driver init. The driver functionality
is not affected by this change.

Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-03-30 17:20:35 -05:00
Linus Torvalds 1b8ee1ec41 ARM: SoC fixes for v4.5 merge window
A few fixes for fallout that we didn't catch in time in -next, or smaller
 warning fixes that have been discovered since.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A few fixes for fallout that we didn't catch in time in -next, or
  smaller warning fixes that have been discovered since"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  soc: qcom/spm: shut up uninitialized variable warning
  ARM: realview: fix device tree build
  ARM: debug-ll: fix BCM63xx entry for multiplatform
  ARM: dts: armadillo800eva Correct extal1 frequency to 24 MHz
2016-01-22 17:26:00 -08:00
Arnd Bergmann 00affcac69 soc: qcom/spm: shut up uninitialized variable warning
gcc warns about the 'found' variable possibly being used uninitialized:

drivers/soc/qcom/spm.c: In function 'spm_dev_probe':
drivers/soc/qcom/spm.c:305:5: error: 'found' may be used uninitialized in this function [-Werror=maybe-uninitialized]

However, the code is correct because we know that there is
always at least one online CPU. This initializes the 'found'
variable to zero before the loop so the compiler knows
it does not have to warn about it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-01-22 11:49:45 +01:00
Linus Torvalds eae21770b4 Merge branch 'akpm' (patches from Andrew)
Merge third patch-bomb from Andrew Morton:
 "I'm pretty much done for -rc1 now:

   - the rest of MM, basically

   - lib/ updates

   - checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit

   - cpu_mask simplifications

   - kexec, rapidio, MAINTAINERS etc, etc.

   - more dma-mapping cleanups/simplifications from hch"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits)
  MAINTAINERS: add/fix git URLs for various subsystems
  mm: memcontrol: add "sock" to cgroup2 memory.stat
  mm: memcontrol: basic memory statistics in cgroup2 memory controller
  mm: memcontrol: do not uncharge old page in page cache replacement
  Documentation: cgroup: add memory.swap.{current,max} description
  mm: free swap cache aggressively if memcg swap is full
  mm: vmscan: do not scan anon pages if memcg swap limit is hit
  swap.h: move memcg related stuff to the end of the file
  mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online
  mm: vmscan: pass memcg to get_scan_count()
  mm: memcontrol: charge swap to cgroup2
  mm: memcontrol: clean up alloc, online, offline, free functions
  mm: memcontrol: flatten struct cg_proto
  mm: memcontrol: rein in the CONFIG space madness
  net: drop tcp_memcontrol.c
  mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM
  mm: memcontrol: allow to disable kmem accounting for cgroup2
  mm: memcontrol: account "kmem" consumers in cgroup2 memory controller
  mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
  mm: memcontrol: separate kmem code from legacy tcp accounting code
  ...
2016-01-21 12:32:08 -08:00
Linus Torvalds 9638685e32 ARM: SoC driver updates for v4.5
Driver updates for ARM SoCs. Some for SoC-family code under drivers/soc,
 but also some other driver updates that don't belong anywhere else. We also
 bring in the drivers/reset code through arm-soc.
 
 Some of the larger updates:
 
 - Qualcomm support for SMEM, SMSM, SMP2P. All used to communicate with other
   parts of the chip/board on these platforms, all proprietary protocols that
   don't fit into other subsystems and live in drivers/soc for now.
 
 - System bus driver for UniPhier
 - Driver for the TI Wakeup M3 IPC device
 
 - Power management for Raspberry PI
 
 + Again a bunch of other smaller updates and patches.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "Driver updates for ARM SoCs.  Some for SoC-family code under
  drivers/soc, but also some other driver updates that don't belong
  anywhere else.  We also bring in the drivers/reset code through
  arm-soc.

  Some of the larger updates:

   - Qualcomm support for SMEM, SMSM, SMP2P.  All used to communicate
     with other parts of the chip/board on these platforms, all
     proprietary protocols that don't fit into other subsystems and live
     in drivers/soc for now.

   - System bus driver for UniPhier

   - Driver for the TI Wakeup M3 IPC device

   - Power management for Raspberry PI

  + Again a bunch of other smaller updates and patches"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
  bus: uniphier: allow only built-in driver
  ARM: bcm2835: clarify RASPBERRYPI_FIRMWARE dependency
  MAINTAINERS: Drop Kumar Gala from QCOM
  bus: uniphier-system-bus: add UniPhier System Bus driver
  ARM: bcm2835: add rpi power domain driver
  dt-bindings: add rpi power domain driver bindings
  ARM: bcm2835: Define two new packets from the latest firmware.
  drivers/soc: make mediatek/mtk-scpsys.c explicitly non-modular
  soc: mediatek: SCPSYS: Add regulator support
  MAINTAINERS: Change QCOM entries
  soc: qcom: smd-rpm: Add existing platform support
  memory/tegra: Add number of TLB lines for Tegra124
  reset: hi6220: fix modular build
  soc: qcom: Introduce WCNSS_CTRL SMD client
  ARM: qcom: select ARM_CPU_SUSPEND for power management
  MAINTAINERS: Add rules for Qualcomm dts files
  soc: qcom: enable smsm/smp2p modular build
  serial: msm_serial: Make config tristate
  soc: qcom: smp2p: Qualcomm Shared Memory Point to Point
  soc: qcom: smsm: Add driver for Qualcomm SMSM
  ...
2016-01-20 18:42:30 -08:00
Stephen Boyd c431e67812 drivers/soc/qcom/smd.c: use __ioread32_copy() instead of open-coding it
Now that we have a generic library function for this, replace the
open-coded instance.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Cc: <zajec5@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Lorenzo Pieralisi f6419f240b ARM: 8485/1: cpuidle: remove cpu parameter from the cpuidle_ops suspend hook
The suspend() hook in the cpuidle_ops struct is always called on
the cpu entering idle, which means that the cpu parameter passed
to the suspend hook always corresponds to the local cpu, making
it somewhat redundant.

This patch removes the logical cpu parameter from the ARM
cpuidle_ops.suspend hook and updates all the existing kernel
implementations to reflect this change.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lina Iyer <lina.iyer@linaro.org>
Tested-by: Lina Iyer <lina.iyer@linaro.org>
Tested-by: Jisheng Zhang <jszhang@marvell.com> [psci]
Cc: Lina Iyer <lina.iyer@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-12-22 12:09:43 +00:00
Andy Gross 1f0947fe3a soc: qcom: smd-rpm: Add existing platform support
This patch adds support for all current Qualcomm platforms which utilize
RPM over SMD.  This includes both MSM8916 and APQ8084.

Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-14 23:58:32 -06:00
Bjorn Andersson ea7a1f275c soc: qcom: Introduce WCNSS_CTRL SMD client
The WCNSS_CTRL SMD client is used for among other things upload nv
firmware to a newly booted WCNSS chip.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-08 13:19:50 -06:00
Arnd Bergmann d9d6888feb ARM: qcom: select ARM_CPU_SUSPEND for power management
The qcom spm driver uses cpu_resume_arm(), which is not included
in the kernel in all configurations:

drivers/built-in.o: In function `qcom_cpu_spc':
:(.text+0xbc022): undefined reference to `cpu_suspend'
drivers/built-in.o: In function `qcom_cpuidle_init':
:(.init.text+0x610c): undefined reference to `cpu_resume_arm'

This adds a 'select' Kconfig statement to ensure it's always
enabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-08 13:01:02 -06:00
Arnd Bergmann 10475d592b soc: qcom: enable smsm/smp2p modular build
The newly added smp2p and smsm drivers cannot be loadable modules
but depend on smem, which can be, and that causes a link error:

drivers/built-in.o: In function `qcom_smp2p_intr':
:(.text+0xa6e68): undefined reference to `qcom_smem_get'
drivers/built-in.o: In function `qcom_smp2p_probe':
:(.text+0xa7320): undefined reference to `qcom_smem_alloc'
:(.text+0xa736c): undefined reference to `qcom_smem_get'
drivers/built-in.o: In function `qcom_smsm_probe':
:(.text+0xa7b34): undefined reference to `qcom_smem_get'

This marks all the drivers as 'tristate' to make the Kconfig
dependency resolution work properly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: dbb04bd7122f ("soc: qcom: smp2p: Qualcomm Shared Memory Point to Point")
Fixes: d7387fc6add4 ("soc: qcom: smsm: Add driver for Qualcomm SMSM")
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-08 13:01:02 -06:00
Bjorn Andersson 50e9964141 soc: qcom: smp2p: Qualcomm Shared Memory Point to Point
Introduce the Qualcomm Shard Memory Point to Point driver.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-08 13:01:01 -06:00
Bjorn Andersson c97c4090ff soc: qcom: smsm: Add driver for Qualcomm SMSM
This driver exposed the Qualcomm Shared Memory State Machine bits.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-08 13:01:01 -06:00
Bjorn Andersson 9460ae2ff3 soc: qcom: Introduce common SMEM state machine code
This implements a common API for handling and exposing SMP2P and SMSM
state information.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-12-08 13:01:01 -06:00
Bjorn Andersson d13a5c8c4c soc: qcom: smd-rpm: Correct size of outgoing message
With the removal of VLAIS the size was incorrectly changed to only cover
the headers of the packet, resulting in "empty" requests being sent to
the RPM. Correct this so the entire message is transfered.

Fixes: 50e1b29b44 ("soc: qcom: smd: Remove use of VLAIS")
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-31 01:51:20 +00:00
Arnd Bergmann 73ebb85444 soc: qcom/smem: add HWSPINLOCK dependency
This fixes a build error when smem is enabled without hwspinlock:

drivers/built-in.o: In function `qcom_smem_alloc':
rockchip-efuse.c:(.text+0x7a3e4): undefined reference to `__hwspin_lock_timeout'
rockchip-efuse.c:(.text+0x7a568): undefined reference to `__hwspin_unlock'
drivers/built-in.o: In function `qcom_smem_remove':
rockchip-efuse.c:(.text+0x7a5cc): undefined reference to `hwspin_lock_free'
drivers/built-in.o: In function `qcom_smem_probe':
rockchip-efuse.c:(.text+0x7a960): undefined reference to `hwspin_lock_request_specific'
rockchip-efuse.c:(.text+0x7a988): undefined reference to `of_hwspin_lock_get_id'
drivers/built-in.o: In function `qcom_smem_get':
rockchip-efuse.c:(.text+0x7aa24): undefined reference to `__hwspin_lock_timeout'
rockchip-efuse.c:(.text+0x7aafc): undefined reference to `__hwspin_unlock'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-10-15 23:04:11 +02:00
Stephen Boyd d0bfd7c9b1 soc: qcom: smem: Move RPM message ram out of smem DT node
SMEM is a software construct built on top of a DDR reserved region
and sometimes a device memory region called RPM message ram. Having
the RPM message ram in the smem DT node's reg property leads to the
smem node being located in different places depending on if the
message ram is being used or not. Let's add a qcom specific
property, qcom,rpm-msg-ram, and point to the device memory from
the SMEM node via a phandle.  As SMEM is a software construct, it
really needs to reside at the root of the DT regardless of whether
it's using the message ram or not.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:40 -05:00
Bjorn Andersson a8ddd1b998 soc: qcom: smd-rpm: Correct the active vs sleep state flagging
The BIT() was incorrectly inherited from family A and should not be used
on family B where the state is denoted by an enum.

Reported-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Tested-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:22 -05:00
Julia Lawall 6083096d96 soc: qcom: smd: delete unneeded of_node_put
Device node iterators perform an of_node_put on each iteration, so putting
an of_node_put before a continue results in a double put.

A simplified version of the semantic match that finds this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
iterator i;
@@

 i(..., child, ...) {
   ... when != of_node_get(child)
*  of_node_put(child);
   ...
*  continue;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:22 -05:00
Bjorn Andersson ea4683e0b6 soc: qcom: smd: Correct SMEM items for upper channels
Update the SMEM items for the second set of SMD channels, as these where
incorrect.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:22 -05:00
Bjorn Andersson a208ca98ff soc: qcom: smd: Reject send of too big packets
Attempting to find room for a packet that's bigger than the fifo will
never succeed and the calling process will be sleeping forever in the
loop, waiting for enough room. So fail early instead.

Reported-by: Courtney Cavin <courtney.cavin@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Reviewed-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:21 -05:00
Stephen Boyd 24f60e3776 soc: qcom: smd: Handle big endian CPUs
The smd structures are always in little endian, but the smd
driver is not capable of being used on big endian CPUs. Annotate
the little endian data members and update the code to do the
proper byte swapping.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:21 -05:00
Stephen Boyd 30b7ea5eda soc: qcom: smd_rpm: Handle big endian CPUs
The smd rpm structures are always in little endian, but this
driver is not capable of being used on big endian CPUs. Annotate
the little endian data members and update the code to do the
proper byte swapping.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:21 -05:00
Stephen Boyd 50e1b29b44 soc: qcom: smd: Remove use of VLAIS
Usage of VLAIS prevents clang from compiling this file, and it
also opens us to the possibility of allocating a large structure
on the stack to the point that we blow past the limit of the
kernel stack. Remove the VLAIS and allocate a structure on the
heap with kmalloc so that we're safer and more clang friendly.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:21 -05:00
Stephen Boyd 3b781e55c6 soc: qcom: smd: Use __iowrite32_copy() instead of open-coding it
We already have a function to do this and it silences some sparse
warnings along the way.

Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:21 -05:00
Stephen Boyd f02dc82523 soc: qcom: smd: Represent channel layout in structures
The rx and tx channel info are laid out in memory next to each
other, and there are two types of channel info structures, byte
based and word based. We have 4 pointers to these info
structures, when we really only need two to point to the
different types of structures. Encapsulate the byte based and
word based tx/rx structures in a "channel pair" structure that
describes the layout of memory and reduces the number of pointers
in the smd channel structure by two.

Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:20 -05:00
Stephen Boyd 9806884d8c soc: qcom: smem: Handle big endian CPUs
The contents of smem are always in little endian, but the smem
driver is not capable of being used on big endian CPUs. Annotate
the little endian data members and update the code to do the
proper byte swapping.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:20 -05:00
Stephen Boyd 1a03964dec soc: qcom: Make qcom_smem_get() return a pointer
Passing a void ** almost always requires a cast at the call site.
Instead of littering the code with casts every time this function
is called, have qcom_smem_get() return a void pointer to the
location of the smem item. This frees the caller from having to
cast the pointer.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:20 -05:00
Stephen Boyd 7d0c8beea6 soc: qcom: Reorder SMEM/SMD configs
When I make nconfig, having the SMEM option after the SMD option
causes the configurator to get confused when I'm enabling and
disabling these options. Let's move SMEM before SMD so there's a
clear indented dependency chain.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:20 -05:00
Stephen Boyd f8c67df71b soc: qcom: smem: Avoid NULL pointer exception on remove
Don't set a pointer to NULL and then dereference it in the next
line.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:20 -05:00
Bjorn Andersson 1a7caca20e soc: qcom: smd: Implement id_table driver matching
Implement a id_table based driver maching mechanism for drivers that
binds to fixed channels and doesn't need any additional configuration,
e.g. IPCRTR and DIAG.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:20 -05:00
Bjorn Andersson 208487a8f6 soc: qcom: smd: Correct fBLOCKREADINTR handling
fBLOCKREADINTR is masking the notification from the remote and should
hence be cleared while we're waiting the tx fifo to drain. Also change
the reset state to mask the notification, as send is the only use case
where we're interested in it.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-09-09 15:58:04 -05:00
Andy Gross 93dbed9121 soc: qcom: smd: Use correct remote processor ID
This patch fixes SMEM addressing issues when remote processors need to use
secure SMEM partitions.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
2015-09-09 15:57:09 -05:00
Andy Gross 18912806bb soc: qcom: smem: Fix errant private access
This patch corrects private partition item access.  Instead of falling back to
global for instances where we have an actual host and remote partition existing,
return the results of the private lookup.

Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-09-09 15:56:52 -05:00
Bjorn Andersson 936f14cf4e soc: qcom: Driver for the Qualcomm RPM over SMD
Driver for the Resource Power Manager (RPM) found in Qualcomm 8974 based
devices.
The driver exposes resources that child drivers can operate on; to
implementing regulator, clock and bus frequency drivers.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-07-29 14:13:48 -05:00
Bjorn Andersson f2ab3298fb soc: qcom: Add Shared Memory Driver
This adds the Qualcomm Shared Memory Driver (SMD) providing
communication channels to remote processors, ontop of SMEM.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-07-29 14:13:48 -05:00
Lina Iyer 23b38ceb81 drivers: qcom: Select QCOM_SCM unconditionally for QCOM_PM
Enable QCOM_SCM for QCOM power management driver

Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-07-28 15:50:17 -05:00
Bjorn Andersson 4b638df4c9 soc: qcom: Add Shared Memory Manager driver
The Shared Memory Manager driver implements an interface for allocating
and accessing items in the memory area shared among all of the
processors in a Qualcomm platform.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Acked-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-07-28 15:50:16 -05:00
Stephen Boyd 498f09bce4 soc: qcom: spm: Fix idle on THUMB2 kernels
The ifc6410 firmware always enters the kernel in ARM state from
deep idle. Use the cpu_resume_arm() wrapper instead of
cpu_resume() to property switch into the THUMB2 state when we
wake up from idle.

This fixes a problem reported by Kevin Hilman on next-20150601
where the ifc6410 fails to boot a THUMB2 kernel because the
platform's firmware always enters the kernel in ARM mode from
deep idle states.

Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2015-07-01 12:16:30 -07:00
Lina Iyer 7ce75bb2c0 ARM: qcom: Add Subsystem Power Manager (SPM) driver
SPM is a hardware block that controls the peripheral logic surrounding
the application cores (cpu/l$). When the core executes WFI instruction,
the SPM takes over the putting the core in low power state as
configured. The wake up for the SPM is an interrupt at the GIC, which
then completes the rest of low power mode sequence and brings the core
out of low power mode.

The SPM has a set of control registers that configure the SPMs
individually based on the type of the core and the runtime conditions.
SPM is a finite state machine block to which a sequence is provided and
it interprets the bytes and executes them in sequence. Each low power
mode that the core can enter into is provided to the SPM as a sequence.

Configure the SPM to set the core (cpu or L2) into its low power mode,
the index of the first command in the sequence is set in the SPM_CTL
register. When the core executes ARM wfi instruction, it triggers the
SPM state machine to start executing from that index. The SPM state
machine waits until the interrupt occurs and starts executing the rest
of the sequence until it hits the end of the sequence. The end of the
sequence jumps the core out of its low power mode.

Add support for an idle driver to set up the SPM to place the core in
Standby or Standalone power collapse mode when the core is idle.

Based on work by: Mahesh Sivasubramanian <msivasub@codeaurora.org>,
Ai Li <ali@codeaurora.org>, Praveen Chidambaram <pchidamb@codeaurora.org>
Original tree available at -
git://codeaurora.org/quic/la/kernel/msm-3.10.git

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Kumar Gala <galak@codeaurora.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-04-27 16:35:06 -05:00
Andy Gross e5fdad68d4 soc: qcom: gsbi: Add support for ADM CRCI muxing
This patch adds automatic configuration for the ADM CRCI muxing required to
support DMA operations for GSBI clients.  The GSBI mode and instance determine
the correct TCSR ADM CRCI MUX value that must be programmed so that the DMA
works properly.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:18:39 -05:00
Wolfram Sang ea84768e9a soc: qcom: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:21:34 +02:00
Srinivas Kandagatla fa9eb32418 drivers/soc: qcom: do not disable the iface clock in probe
since commit 31964ffebb ("tty: serial: msm: Remove direct access to GSBI")'
serial hangs if earlyprintk are enabled.

This hang is noticed only when the GSBI driver is probed and all the
earlyprintks before gsbi probe are seen on the console.
The reason why it hangs is because GSBI driver disables hclk in its
probe function without realizing that the serial IP might be in use by
a bootconsole. As gsbi driver disables the clock in probe the
bootconsole locks up.

Turning off hclk's could be dangerous if there are system components
like earlyprintk using the hclk.

This patch fixes the issue by delegating the clock management to
probe and remove functions in gsbi rather than disabling the clock in probe.

More detailed problem description can be found here:
http://www.spinics.net/lists/linux-arm-msm/msg10589.html

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-09-23 21:38:32 -07:00
Arnd Bergmann 1b7f0c7b93 soc: qcom: fix of_device_id table
The match tables must be zero-terminated, and Kbuild now helpfully
fails to link the kernel if that isn't the case.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-05-26 21:27:09 +02:00
Andy Gross 5d144e36b7 soc: qcom: Add GSBI driver
The GSBI (General Serial Bus Interface) driver controls the overarching
configuration of the shared serial bus infrastructure on APQ8064, IPQ8064, and
earlier QCOM processors.  The GSBI supports UART, I2C, SPI, and UIM
functionality in various combinations.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2014-05-23 11:38:04 -05:00