Pull mailbox updates from Jassi Brar:
- Remove HAS_DMA config dependencies
- New STMicroelectronics STM32 IPCC driver
- Enable QCom driver to run more controllers
- Fixed return code from null to ptr-err for Brcm driver
- Fix kconfig dependencies for the HiSilicon driver
* tag 'mailbox-v4.18' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox/drivers/hisi: Consolidate the Kconfig for the MAILBOX
mailbox: Add support for Qualcomm SDM845 SoCs
dt-bindings: mailbox: Add APSS shared binding for SDM845 SoCs
mailbox: bcm2835: Fix of_xlate return value
mailbox: qcom: Add msm8998 hmss compatible
mailbox: add STMicroelectronics STM32 IPCC driver
dt-bindings: mailbox: add STMicroelectronics STM32 IPCC binding
mailbox: Remove depends on HAS_DMA in case of platform dependency
The current defconfig is inconsistent as it selects the mailbox and
the clock for the hi6220 and the hi3660 without having their Kconfigs
making sure the dependencies are correct. It ends up when selecting
different versions for the kernel (for example when git bisecting)
those options disappear and they don't get back, leading to unexpected
behaviors. In our case, the cpufreq driver does no longer work because
the clock fails to initialize due to the clock stub and the mailbox
missing.
In order to have the dependencies correctly set when defaulting, let's
do the same as commit 3a49afb84c ("clk: enable hi655x common clk
automatically") where we select automatically the driver when the
parent driver is selected. With sensible defaults in place, we can leave
other choices for EXPERT.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
The bcm2835-mailbox returns NULL instead of an error pointer, which could
result in a NULL ptr dereference in mbox_request_channel. So fix this
by returning a proper error pointer.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 0bae6af6d7 ("mailbox: Enable BCM2835 mailbox support")
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
The STMicroelectronics STM32 Inter-Processor Communication Controller
(IPCC) is used for communicating data between two processors.
It provides a non blocking signaling mechanism to post and retrieve
communication data in an atomic way.
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Remove dependencies on HAS_DMA where a Kconfig symbol depends on another
symbol that implies HAS_DMA, and, optionally, on "|| COMPILE_TEST".
In most cases this other symbol is an architecture or platform specific
symbol, or PCI.
Generic symbols and drivers without platform dependencies keep their
dependencies on HAS_DMA, to prevent compiling subsystems or drivers that
cannot work anyway.
This simplifies the dependencies, and allows to improve compile-testing.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
There have been multiple reports of the following error message:
[ 0.068293] Error parsing PCC subspaces from PCCT
This error message is not correct. In multiple cases examined, the PCCT
(Platform Communications Channel Table) concerned is actually properly
constructed; the problem is that acpi_pcc_probe() which reads the PCCT
is making the assumption that the only valid PCCT is one that contains
subtables of one of two types: ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE or
ACPI_PCCT_TYPE_HW_REDUCED_TYPE2. The number of subtables of these
types are counted and as long as there is at least one of the desired
types, the acpi_pcc_probe() succeeds. When no subtables of these types
are found, regardless of whether or not any other subtable types are
present, the error mentioned above is reported.
In the cases reported to me personally, the PCCT contains exactly one
subtable of type ACPI_PCCT_TYPE_GENERIC_SUBSPACE. The function
acpi_pcc_probe() does not count it as a valid subtable, so believes
there to be no valid subtables, and hence outputs the error message.
An example of the PCCT being reported as erroneous yet perfectly fine
is the following:
Signature : "PCCT"
Table Length : 0000006E
Revision : 05
Checksum : A9
Oem ID : "XXXXXX"
Oem Table ID : "XXXXX "
Oem Revision : 00002280
Asl Compiler ID : "XXXX"
Asl Compiler Revision : 00000002
Flags (decoded below) : 00000001
Platform : 1
Reserved : 0000000000000000
Subtable Type : 00 [Generic Communications Subspace]
Length : 3E
Reserved : 000000000000
Base Address : 00000000DCE43018
Address Length : 0000000000001000
Doorbell Register : [Generic Address Structure]
Space ID : 01 [SystemIO]
Bit Width : 08
Bit Offset : 00
Encoded Access Width : 01 [Byte Access:8]
Address : 0000000000001842
Preserve Mask : 00000000000000FD
Write Mask : 0000000000000002
Command Latency : 00001388
Maximum Access Rate : 00000000
Minimum Turnaround Time : 0000
To fix this, we count up all of the possible subtable types for the
PCCT, and only report an error when there are none (which could mean
either no subtables, or no valid subtables), or there are too many.
We also change the logic so that if there is a valid subtable, we
do try to initialize it per the PCCT subtable contents. This is a
change in functionality; previously, the probe would have returned
right after the error message and would not have tried to use any
other subtable definition.
Tested on my personal laptop which showed the error previously; the
error message no longer appears and the laptop appears to operate
normally.
Signed-off-by: Al Stone <ahs3@redhat.com>
Reviewed-by: Prashanth Prakash <pprakash@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Hi3660 mailbox controller is used to send message within multiple
processors, MCU, HIFI, etc. It supports 32 mailbox channels and every
channel can only be used for single transferring direction. Once the
channel is enabled, it needs to specify the destination interrupt and
acknowledge interrupt, these two interrupt vectors are used to create
the connection between the mailbox and interrupt controllers.
The data transferring supports two modes, one is named as "automatic
acknowledge" mode so after send message the kernel doesn't need to wait
for acknowledge from remote and directly return; there have another mode
is to rely on handling interrupt for acknowledge.
This commit is for initial version driver, which only supports
"automatic acknowledge" mode to support CPU clock, which is the only
one consumer to use mailbox and has been verified. Later may enhance
this driver for interrupt mode (e.g. for supporting HIFI).
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Ruyi Wang <wangruyi@huawei.com>
Signed-off-by: Kaihua Zhong <zhongkaihua@huawei.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
With the addition of the ARCH_TEGRA_194_SOC driver, we get a new Kconfig warning:
warning: (ARCH_TEGRA_186_SOC && ARCH_TEGRA_194_SOC) selects TEGRA_HSP_MBOX which has unmet direct dependencies (MAILBOX && ARCH_TEGRA_186_SOC)
It looks like the dependency is a bit too strict here, allowing the driver to
be built for any Tegra chip avoids the problem.
Fixes: 6f9ed07fde ("soc/tegra: Add Tegra194 SoC configuration option")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:
for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
done
with de-mangling cleanups yet to come.
NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do. But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.
The next patch from Al will sort out the final differences, and we
should be all done.
Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull mailbox updates from Jassi Brar:
"Misc driver changes only:
- TI-MsgMgr: Fix print format for a printk
- TI-MSgMgr: SPDX license switch for the driver
- QCOM-IPC: Convert driver to use regmap
- QCOM-IPC: Spawn sibling clock device from mailbox driver"
* tag 'mailbox-v4.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
dt-bindings: mailbox: qcom: Document the APCS clock binding
mailbox: qcom: Create APCS child device for clock controller
mailbox: qcom: Convert APCS IPC driver to use regmap
mailbox: ti-msgmgr: Use %zu for size_t print format
mailbox: ti-msgmgr: Switch to SPDX Licensing
There is a clock controller functionality provided by the APCS hardware
block of msm8916 devices. The device-tree would represent an APCS node
with both mailbox and clock provider properties.
Create a platform child device for the clock controller functionality so
the driver can probe and use APCS as parent.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This hardware block provides more functionalities that just IPC. Convert
it to regmap to allow other child platform devices to use the same regmap.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
message->len is of type size_t and %d is incorrect format usage.
Instead use %zu for handling size_t correctly.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Switch to SPDX licensing and drop the GPL text which comes redundant.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Pull mailbox updates from Jassi Brar:
"Change to POLL api and fixes for FlexRM and OMAP driver.
Summary:
- Core: Prefer ACK method over POLL, if both supported
- Test: use flag instead of special character
- FlexRM: Usual driver internal minor churn
- Omap: fix error path"
* tag 'mailbox-v4.15' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox/omap: unregister mbox class
mailbox: mailbox-test: don't rely on rx_buffer content to signal data ready
mailbox: reset txdone_method TXDONE_BY_POLL if client knows_txdone
mailbox: Build Broadcom FlexRM driver as loadable module for iProc SOCs
mailbox: bcm-flexrm-mailbox: Use common GPL comment header
mailbox: bcm-flexrm-mailbox: add depends on ARCH_BCM_IPROC
mailbox: bcm-flexrm-mailbox: Print ring number in errors and warnings
mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush sequence
Currently we rely on the first byte of the Rx buffer to check if there's
any data available to be read. If the first byte of the received buffer
is zero (i.e. null character), then we fail to signal that data is
available even when it's available.
Instead introduce a boolean variable to track the data availability and
update it in the channel receive callback as ready and clear it when the
data is read.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Currently the mailbox framework sets txdone_method to TXDONE_BY_POLL if
the controller sets txdone_by_poll. However some clients can have a
mechanism to do TXDONE_BY_ACK which they can specify by knows_txdone.
However, we endup setting both TXDONE_BY_POLL and TXDONE_BY_ACK in that
case. In such scenario, we may end up with below warnings as the tx
ticker is run both by mailbox framework and the client.
WARNING: CPU: 1 PID: 0 at kernel/time/hrtimer.c:805 hrtimer_forward+0x88/0xd8
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.12.0-rc5 #242
Hardware name: ARM LTD ARM Juno Development Platform
task: ffff8009768ca700 task.stack: ffff8009768f8000
PC is at hrtimer_forward+0x88/0xd8
LR is at txdone_hrtimer+0xd4/0xf8
Call trace:
hrtimer_forward+0x88/0xd8
__hrtimer_run_queues+0xe4/0x158
hrtimer_interrupt+0xa4/0x220
arch_timer_handler_phys+0x30/0x40
handle_percpu_devid_irq+0x78/0x130
generic_handle_irq+0x24/0x38
__handle_domain_irq+0x5c/0xb8
gic_handle_irq+0x54/0xa8
This patch fixes the issue by resetting TXDONE_BY_POLL if client has set
knows_txdone.
Cc: Alexey Klimov <alexey.klimov@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Pull ACPI updates from Rafael Wysocki:
"These update ACPICA to upstream revision 20170831, fix APEI to use the
fixmap instead of ioremap_page_range(), add an operation region driver
for TI PMIC TPS68470, add support for PCC subspace IDs to the ACPI
CPPC driver, fix a few assorted issues and clean up some code.
Specifics:
- Update the ACPICA code to upstream revision 20170831 including
* PDTT table header support (Bob Moore).
* Cleanup and extension of internal string-to-integer conversion
functions (Bob Moore).
* Support for 64-bit hardware accesses (Lv Zheng).
* ACPI PM Timer code adjustment to deal with 64-bit return values
of acpi_hw_read() (Bob Moore).
* Support for deferred table verification in acpiexec (Lv Zheng).
- Fix APEI to use the fixmap instead of ioremap_page_range() which
cannot work correctly the way the code in there attempted to use it
and drop some code that's not necessary any more after that change
(James Morse).
- Clean up the APEI support code and make it use 64-bit timestamps
(Arnd Bergmann, Dongjiu Geng, Jan Beulich).
- Add operation region driver for TI PMIC TPS68470 (Rajmohan Mani).
- Add support for PCC subspace IDs to the ACPI CPPC driver (George
Cherian).
- Fix an ACPI EC driver regression related to the handling of EC
events during the "noirq" phases of system suspend/resume (Lv
Zheng).
- Delay the initialization of the lid state in the ACPI button driver
to fix issues appearing on some systems (Hans de Goede).
- Extend the KIOX000A "device always present" quirk to cover all
affected BIOS versions (Hans de Goede).
- Clean up some code in the ACPI core and drivers (Colin Ian King,
Gustavo Silva)"
* tag 'acpi-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (24 commits)
ACPI: Mark expected switch fall-throughs
ACPI / LPSS: Remove redundant initialization of clk
ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs
mailbox: PCC: Move the MAX_PCC_SUBSPACES definition to header file
ACPI / sysfs: Make function param_set_trace_method_name() static
ACPI / button: Delay acpi_lid_initialize_state() until first user space open
ACPI / EC: Fix regression related to triggering source of EC event handling
APEI / ERST: use 64-bit timestamps
ACPI / APEI: Remove arch_apei_flush_tlb_one()
arm64: mm: Remove arch_apei_flush_tlb_one()
ACPI / APEI: Remove ghes_ioremap_area
ACPI / APEI: Replace ioremap_page_range() with fixmap
ACPI / APEI: remove the unused dead-code for SEA/NMI notification type
ACPI / x86: Extend KIOX000A quirk to cover all affected BIOS versions
ACPI / APEI: adjust a local variable type in ghes_ioremap_pfn_irq()
ACPICA: Update version to 20170831
ACPICA: Update acpi_get_timer for 64-bit interface to acpi_hw_read
ACPICA: String conversions: Update to add new behaviors
ACPICA: String conversions: Cleanup/format comments. No functional changes
ACPICA: Restructure/cleanup all string-to-integer conversion functions
...
