We do not expect to receive spurious interrupts so rise a warning
if it happens.
RX overrun is an error condition that signals a corrupted RX
stream both in dma and in irq modes. Report the error and
abort the transfer in either cases.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-9-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Replace SPI_1HZ_NS private constant with NSEC_PER_SEC, which is easier
to read and understand.
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-8-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Defer the probe operation when a reset controller device is expected
but have not yet been probed.
This change replaces use of devm_reset_control_get_exclusive() with
devm_reset_control_get_optional_exclusive() as reset controller is
optional which is now explicitly stated.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-7-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Remove reset controller device reference from the device private
structure since it is used only at probe time and can be discarded
once used to reset the SPI device.
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-6-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Ensure that messages given to transfer_one handler can actually be
handled by it. For that purpose rely on the SPI framework
spi_split_transfers_maxsize function to split messages whenever necessary.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-5-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
To avoid defining shift and mask separately and hand-coding the bit
manipulation, use the bitfield macros.
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-4-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This driver likely also supports earlier (RTL8196) and later (RTL93xx)
SoCs.
The SPI hardware in these SoCs is specifically intended for connecting NOR
bootflash chips, and only used for that in dozens of examined devices.
However boiled down to basics, it's really just a half-duplex SPI
controller.
The hardware appears to have a vestigial second chip-select control, but
it hasn't been seen in the wild and is thus not supported.
Signed-off-by: Bert Vermeulen <bert@biot.com>
Link: https://lore.kernel.org/r/20210120135928.246054-3-bert@biot.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The address mode is either 3 or 4 for the controller, which is configured
by the firmware and cannot be modified in the OS driver. Get the
firmware configuration and add address mode check in the .supports_op()
to block invalid operations.
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Acked-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1611740450-47975-3-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add the obvious compatible name to the existing SPI binding, and pair
it with the existing H3 fallback compatible string, as the devices are
compatible.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210125151811.11871-14-andre.przywara@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The CSR SiRF prima2/atlas platforms are getting removed, so this driver
is no longer needed.
Cc: Barry Song <baohua@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Barry Song <baohua@kernel.org>
Link: https://lore.kernel.org/r/20210120161658.3820610-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.
The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).
[1] commit bebcfd272d ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")
Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean-OyLXuOCK7orQT0dZR+AlfA@public.gmane.org>
Link: https://lore.kernel.org/r/20200227143931.20688-1-sergiu.cuciurean@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Set the struct spi_controller max_speed_hz. This is based on the
reported source clock frequency during probe. The maximum bus clock
is half the source clock (as per the code in bcm2835_spi_transfer_one).
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210107164825.21919-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Hi Mark,
This patch series makes the Renesas MSIOF SPI driver fill in actual
transfer speeds and controller limits, so the SPI core can take them
into account.
This has been tested on R-Car Gen2 and Gen3.
Thanks!
Geert Uytterhoeven (2):
spi: sh-msiof: Fill in spi_transfer.effective_speed_hz
spi: sh-msiof: Fill in controller speed limits
drivers/spi/spi-sh-msiof.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--
2.25.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
Add QSPI controller support for Intel LGM SoC.
Patches to move move bindings over to
"Documentation/devicetree/bindings/spi/" directory and also added compatible
Support for Intel platform.
dt-bindings: spi: cadence-qspi: Add support for Intel lgm-qspi
(earlier patch mail thread and Ack-by)
link: "https://lore.kernel.org/lkml/5d6d1b85.1c69fb81.96938.0315@mx.google.com/"
Reference:
https://lkml.org/lkml/2020/6/1/50
---
v9:
- Vignesh review comments address and update
- Retain the patchv4 move the binding documentation from mtd to spi
directory.
- Add intel's compatible string over the legacy documentation
- Remove unused variable, CQSPI_SUPPORTS_MULTI_CHIPSELECT macro and check
- YAML convertion patch alone dropped
v8:
- As Mark suggested to add the dt-bindings documentation patches
end of the series , so dropped.
v7:
- Rob's review comments address and fixed dt-schema warning
- Pratyush review comments address and update
- DAC bit reset to 0 and 1 (enable/disable)
- tested QSI-NOR flash mx25l12805d on LGM soc, it's working after disable DAC
- Linus suggested to use 'num-cs' prperty instead of 'num-chipselect'
v6:
- Rob's review comments update
- add compatible string in properly aligned
- remove cadence-qspi extra comaptible string in example
v5:
- Rob's review comments update
- const with single compatible string kept
v4:
- Rob's review comments update
- remove '|' no formatting to preserve
- child node attributes follows under 'properties' under '@[0-9a-f]+$'.
v3:
- Pratyush review comments update
- CQSPI_SUPPORTS_MULTI_CHIPSELECT macro used instead of cqspi->use_direct_mode
- disable DAC support placed in end of controller_init
v2:
- Rob's review comments update for dt-bindings
- add 'oneOf' for compatible selection
- drop un-neccessary descriptions
- add the cdns,is-decoded-cs and cdns,rclk-en properties as schema
- remove 'allOf' in not required place
- add AdditionalProperties false
- add minItems/maxItems for qspi reset attributes
resend-v1:
- As per Mark's suggestion , reorder the patch series 1-3 driver
support patches, series 4-6 dt-bindings patches.
v1:
- initial version
Ramuthevar Vadivel Murugan (5):
spi: cadence-quadspi: Add QSPI support for Intel LGM SoC
spi: cadence-quadspi: Disable the DAC for Intel LGM SoC
spi: cadence-quadspi: Add multi-chipselect support for Intel LGM SoC
spi: Move cadence-quadspi.txt to Documentation/devicetree/bindings/spi
dt-bindings: spi: cadence-qspi: Add support for Intel lgm-qspi
.../bindings/{mtd => spi}/cadence-quadspi.txt | 1 +
drivers/spi/Kconfig | 2 +-
drivers/spi/spi-cadence-quadspi.c | 24 ++++++++++++++++++----
3 files changed, 22 insertions(+), 5 deletions(-)
rename Documentation/devicetree/bindings/{mtd => spi}/cadence-quadspi.txt (97%)
--
2.11.0
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
Simplify stm32h7_spi_prepare_fthlv() function implementation,
no functional change intended.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alain Volmat <alain.volmat@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Amelie Delaunay <amelie.delaunay@st.com>
Cc: Antonio Borneo <antonio.borneo@st.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Roman Guskov <rguskov@dh-electronics.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-spi@vger.kernel.org
Link: https://lore.kernel.org/r/20210104123114.261596-1-marex@denx.de
Signed-off-by: Mark Brown <broonie@kernel.org>
We don't need to force this to be trigger high here, as the firmware
properly configures the irq flags already. Drop it to save a line.
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Rajendra Nayak <rnayak@codeaurora.org>
Cc: Mukesh Kumar Savaliya <msavaliy@codeaurora.org>
Cc: Akash Asthana <akashast@codeaurora.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210112001301.687628-1-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Currently we use concrete version to determine the max_cmd_dword.
New entries should be added for compatible hardwares of new version
or on new platform, otherwise the device will use 16 dwords instead
of 64 even if it supports, which will degrade the performance.
This will decrease the compatibility and the maintainability.
Drop the switch-case statement of the version checking. Only version
less than 0x351 supports maximum 16 command dwords.
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Acked-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1610526716-14882-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Fill in the controller speed limits, so the SPI core can use them for
validating SPI transfers, and adjust or reject transfers when needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210113101916.1147695-3-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
Fill in the effective bit rate used for transfers, so the SPI core can
calculate instead of estimate delays.
Restore "reverse Christmas tree" order of local variables while adding
new variables.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210113101916.1147695-2-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
Add new vendor specific compatible string to check Intel's Lightning
Mountain(LGM) QSPI features enablement in cadence-quadspi driver.
Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201124041840.31066-6-vadivel.muruganx.ramuthevar@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Move the Documentation/devicetree/bindings/mtd/cadence-quadspi.txt to
Documentation/devicetree/bindings/spi/
Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201124041840.31066-5-vadivel.muruganx.ramuthevar@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
On Intel Lightning Mountain(LGM) SoCs QSPI controller do not use
Direct Access Controller(DAC).
This patch adds a quirk to disable the Direct Access Controller
for data transfer instead it uses indirect data transfe
DAC bit resets to 1 so there is no need to explicitly set it.
Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
Link: https://lore.kernel.org/r/20201124041840.31066-3-vadivel.muruganx.ramuthevar@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
With CONFIG_PM_SLEEP disabled the rpcif_spi_pm_ops variable is still
referenced and thus increasing the size of kernel.
Fix this issue by adding CONFIG_PM_SLEEP #ifdef check around the .pm
assignment (image size is critical on RZ/A SoC's where the SRAM sizes
range 4~5 MiB).
Fixes: 9584fc95ca ("spi: rpc-if: Remove CONFIG_PM_SLEEP ifdefery")
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Suggested-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210107145329.27966-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The kernel test robot reports the following warning.
drivers/spi/spi-cadence-quadspi.c:966:24: warning: comparison of distinct pointer types ('typeof (len) *' (aka 'unsigned int *') and 'typeof (500UL) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types]
msecs_to_jiffies(max(len, 500UL)))) {
^~~~~~~~~~~~~~~
include/linux/minmax.h:58:19: note: expanded from macro 'max'
#define max(x, y) __careful_cmp(x, y, >)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:42:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:32:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:18:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
1 warning generated.
This happens because size_t is unsigned long on 64-bit platforms like
arm64 but it is unsigned int on 32-bit platforms like arm. Omitting the
"UL" would result in a warning on 64-bit platforms. Squash it by type
casting the arguments to size_t using max_t(). This way builds on both
type of platforms can be satisfied. There is no chance of any truncation
since 500 is small enough to fit into both int and long.
Fixes: f453f29397 ("spi: cadence-quadspi: Wait at least 500 ms for direct reads")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210108181457.30291-1-p.yadav@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
- Search for <ncurses.h> in the default header path of HOSTCC
- Tweak the option order to be kind to old BSD awk
- Remove 'kvmconfig' and 'xenconfig' shorthands
- Fix documentation
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Merge tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Search for <ncurses.h> in the default header path of HOSTCC
- Tweak the option order to be kind to old BSD awk
- Remove 'kvmconfig' and 'xenconfig' shorthands
- Fix documentation
* tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Documentation: kbuild: Fix section reference
kconfig: remove 'kvmconfig' and 'xenconfig' shorthands
lib/raid6: Let $(UNROLL) rules work with macOS userland
kconfig: Support building mconf with vendor sysroot ncurses
kconfig: config script: add a little user help
MAINTAINERS: adjust GCC PLUGINS after gcc-plugin.sh removal
This is two driver fixes (megaraid_sas and hisi_sas). The megaraid
one is a revert of a previous revert of a cpu hotplug fix which
exposed a bug in the block layer which has been fixed in this merge
window and the hisi_sas performance enhancement comes from switching
to interrupt managed completion queues, which depended on the addition
of devm_platform_get_irqs_affinity() which is now upstream via the irq
tree in the last merge window.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is two driver fixes (megaraid_sas and hisi_sas).
The megaraid one is a revert of a previous revert of a cpu hotplug fix
which exposed a bug in the block layer which has been fixed in this
merge window.
The hisi_sas performance enhancement comes from switching to interrupt
managed completion queues, which depended on the addition of
devm_platform_get_irqs_affinity() which is now upstream via the irq
tree in the last merge window"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: hisi_sas: Expose HW queues for v2 hw
Revert "Revert "scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug""
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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- Missing CRC32 selections (Arnd)
- Fix for a merge window regression with bdev inode init (Christoph)
- bcache fixes
- rnbd fixes
- NVMe pull request from Christoph:
- fix a race in the nvme-tcp send code (Sagi Grimberg)
- fix a list corruption in an nvme-rdma error path (Israel Rukshin)
- avoid a possible double fetch in nvme-pci (Lalithambika Krishnakumar)
- add the susystem NQN quirk for a Samsung driver (Gopal Tiwari)
- fix two compiler warnings in nvme-fcloop (James Smart)
- don't call sleeping functions from irq context in nvme-fc (James Smart)
- remove an unused argument (Max Gurtovoy)
- remove unused exports (Minwoo Im)
- Use-after-free fix for partition iteration (Ming)
- Missing blk-mq debugfs flag annotation (John)
- Bdev freeze regression fix (Satya)
- blk-iocost NULL pointer deref fix (Tejun)
* tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block: (26 commits)
bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket
bcache: check unsupported feature sets for bcache register
bcache: fix typo from SUUP to SUPP in features.h
bcache: set pdev_set_uuid before scond loop iteration
blk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
block/rnbd-clt: avoid module unload race with close confirmation
block/rnbd: Adding name to the Contributors List
block/rnbd-clt: Fix sg table use after free
block/rnbd-srv: Fix use after free in rnbd_srv_sess_dev_force_close
block/rnbd: Select SG_POOL for RNBD_CLIENT
block: pre-initialize struct block_device in bdev_alloc_inode
fs: Fix freeze_bdev()/thaw_bdev() accounting of bd_fsfreeze_sb
nvme: remove the unused status argument from nvme_trace_bio_complete
nvmet-rdma: Fix list_del corruption on queue establishment failure
nvme: unexport functions with no external caller
nvme: avoid possible double fetch in handling CQE
nvme-tcp: Fix possible race of io_work and direct send
nvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN
nvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings
...
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Merge tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A bit larger than I had hoped at this point, but it's all changes that
will be directed towards stable anyway. In detail:
- Fix a merge window regression on error return (Matthew)
- Remove useless variable declaration/assignment (Ye Bin)
- IOPOLL fixes (Pavel)
- Exit and cancelation fixes (Pavel)
- fasync lockdep complaint fix (Pavel)
- Ensure SQPOLL is synchronized with creator life time (Pavel)"
* tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block:
io_uring: stop SQPOLL submit on creator's death
io_uring: add warn_once for io_uring_flush()
io_uring: inline io_uring_attempt_task_drop()
io_uring: io_rw_reissue lockdep annotations
io_uring: synchronise ev_posted() with waitqueues
io_uring: dont kill fasync under completion_lock
io_uring: trigger eventfd for IOPOLL
io_uring: Fix return value from alloc_fixed_file_ref_node
io_uring: Delete useless variable ‘id’ in io_prep_async_work
io_uring: cancel more aggressively in exit_work
io_uring: drop file refs after task cancel
io_uring: patch up IOPOLL overflow_flush sync
io_uring: synchronise IOPOLL on task_submit fail
