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Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based
on the alias from of_device_id table.
Signed-off-by: Liao Chen <liaochen4@huawei.com>
Link: https://patch.msgid.link/20240831094231.795024-1-liaochen4@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use the dev_err_probe() helper to simplify error handling during probe.
This also handle scenario, when EDEFER is returned and useless error
is printed.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20240826121421.3384792-3-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use devm_spi_alloc_host() so that there's no need to call
spi_controller_put() in the error path.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20240826121421.3384792-2-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The header file linux/platform_device.h is included
twice. Remove the last one.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://patch.msgid.link/20240830075800.3541646-1-lihongbo22@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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intel_spi_populate_chip() use devm_kasprintf() to set pdata->name.
This can return a NULL pointer on failure but this returned value
is not checked.
Fixes: e58db3bcd93b ("spi: intel: Add default partition and name to the second chip")
Signed-off-by: Charles Han <hanchunchao@inspur.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/20240830074106.8744-1-hanchunchao@inspur.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Jinjie Ruan <ruanjinjie@huawei.com>:
Fix uninitialized res in probe function.
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Merge series from Jinjie Ruan <ruanjinjie@huawei.com>:
Fix missing pm_runtime_disable().
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Merge series from Jinjie Ruan <ruanjinjie@huawei.com>:
Fix uninitialized res in probe function.
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The rv1108-elgin-r1 board has an LCD controlled via SPI in userspace.
The marking on the LCD is JG10309-01.
Add the "elgin,jg10309-01" compatible string.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20240828180057.3167190-2-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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When the original file is guaranteed to contain the minmax.h header file
and compile correctly, using the real macro is usually
more intuitive and readable.
Signed-off-by: Yan Zhen <yanzhen@vivo.com>
Link: https://patch.msgid.link/20240827131203.3918516-1-yanzhen@vivo.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The rv1108-elgin-r1 board has an LCD controlled via SPI in userspace.
The marking on the LCD is JG10309-01.
Add the "elgin,jg10309-01" compatible string.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20240829113158.3324928-2-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Increase the reference count by calling pci_get_slot(), and remember to
decrement the reference count by calling pci_dev_put().
Signed-off-by: Yang Ruibin <11162571@vivo.com>
Link: https://patch.msgid.link/20240829033511.1917015-1-11162571@vivo.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use the dev_err_probe() helper to simplify error handling during probe.
This also handle scenario, when EDEFER is returned and useless error
is printed.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240826132544.3463616-3-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The second platform_get_resource_byname() can not be replaced with
devm_platform_ioremap_resource_byname(), because the intermediate "res"
is used by resource_size() later.
Fixes: 3bf2a5359b0b ("spi: wpcm-fiu: Use devm_platform_ioremap_resource_byname()")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240826132544.3463616-2-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use the dev_err_probe() helper to simplify error handling during probe.
This also handle scenario, when EDEFER is returned and useless error
is printed.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240826125913.3434305-3-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The second platform_get_resource_byname() can not be replaced with
devm_platform_ioremap_resource_byname(), because the intermediate "res"
is used to assign for "aq->mmap_size".
Fixes: 3ccea1dedef3 ("spi: atmel-quadspi: Simpify resource lookup")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
Link: https://patch.msgid.link/20240826125913.3434305-2-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use devm_spi_alloc_host() so that there's no need to call
spi_controller_put() in the error path.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: William Zhang <william.zhang@broadcom.com>
Link: https://patch.msgid.link/20240826124903.3429235-3-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The pm_runtime_disable() is missing in remove function, use
devm_pm_runtime_enable() to fix it. So the pm_runtime_disable() in
the probe error path can also be removed.
Fixes: a38a2233f23b ("spi: bcmbca-hsspi: Add driver for newer HSSPI controller")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: William Zhang <william.zhang@broadcom.com>
Link: https://patch.msgid.link/20240826124903.3429235-2-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Commit e882575efc77 ("spi: rockchip: Suspend and resume the bus during
NOIRQ_SYSTEM_SLEEP_PM ops") stopped respecting runtime PM status and
simply disabled clocks unconditionally when suspending the system. This
causes problems when the device is already runtime suspended when we go
to sleep -- in which case we double-disable clocks and produce a
WARNing.
Switch back to pm_runtime_force_{suspend,resume}(), because that still
seems like the right thing to do, and the aforementioned commit makes no
explanation why it stopped using it.
Also, refactor some of the resume() error handling, because it's not
actually a good idea to re-disable clocks on failure.
Fixes: e882575efc77 ("spi: rockchip: Suspend and resume the bus during NOIRQ_SYSTEM_SLEEP_PM ops")
Cc: stable@vger.kernel.org
Reported-by: Ondřej Jirman <megi@xff.cz>
Closes: https://lore.kernel.org/lkml/20220621154218.sau54jeij4bunf56@core/
Signed-off-by: Brian Norris <briannorris@chromium.org>
Link: https://patch.msgid.link/20240827171126.1115748-1-briannorris@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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The timeout used when waiting for transfer's completion is always set to
HZ. This isn't enough if a transfer is too large or if the bus speed is
too low.
Use the bus speed and the transfer length to calculate an appropriate
timeout
Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
Link: https://patch.msgid.link/20240828063131.10507-1-bastien.curutchet@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Instead of calling platform_get_resource_byname() and
devm_ioremap_resource(), simplify the code by simply calling
devm_platform_ioremap_resource_byname().
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240820124011.1788479-1-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240820123818.1788432-1-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240820123518.1788294-1-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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PCI and platform buses have different defaults for runtime PM.
In particular PCI probe is assumed to be called when PM runtime
is enabled by the PCI core. In this case if we try enable it again
the PM runtime complaints with
pxa2xx_spi_pci 0000:00:07.0: Unbalanced pm_runtime_enable!
Fix this by moving PM runtime handling from the SPI PXA2xx core
to the glue drivers.
Fixes: cc160697a576 ("spi: pxa2xx: Convert PCI driver to use spi-pxa2xx code directly")
Fixes: 3d8f037fbcab ("spi: pxa2xx: Move platform driver to a separate file")
Fixes: 20ade9b9771c ("spi: pxa2xx: Extract pxa2xx_spi_platform_*() callbacks")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20240822113408.750831-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The platform_data field may be supplied by legacy board code.
In other cases we override it, and module remove and probe cycle
will crash the kernel since it will carry a stale pointer.
Fix this by supplying a third argument to the pxa2xx_spi_probe()
and avoid overriding dev->platform_data.
Reported-by: Hao Ma <hao.ma@intel.com>
Fixes: cc160697a576 ("spi: pxa2xx: Convert PCI driver to use spi-pxa2xx code directly")
Fixes: 3d8f037fbcab ("spi: pxa2xx: Move platform driver to a separate file")
Fixes: 20ade9b9771c ("spi: pxa2xx: Extract pxa2xx_spi_platform_*() callbacks")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20240822113408.750831-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Referring to the errata ERR051608 of I.MX93, LPSPI TCR[PRESCALE]
can only be configured to be 0 or 1, other values are not valid
and will cause LPSPI to not work.
Add the prescale limitation for LPSPI in I.MX93. Other platforms
are not affected.
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Link: https://patch.msgid.link/20240820070658.672127-1-carlos.song@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Jinjie Ruan <ruanjinjie@huawei.com>:
Fix module autoloading and missing pm_runtime_disable().
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The pm_runtime_disable() is missing in the remove function, fix it
by using devm_pm_runtime_enable(), so the pm_runtime_disable() in
the probe error path can also be removed.
Fixes: 2d13f2ff6073 ("spi: bcm63xx-spi: fix pm_runtime")
Cc: stable@vger.kernel.org # v5.13+
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Suggested-by: Jonas Gorski <jonas.gorski@gmail.com>
Link: https://patch.msgid.link/20240819123349.4020472-3-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded
based on the alias from platform_device_id table.
Fixes: 44d8fb30941d ("spi/bcm63xx: move register definitions into the driver")
Cc: stable@vger.kernel.org
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Jonas Gorski <jonas.gorski@gmail.com>
Link: https://patch.msgid.link/20240819123349.4020472-2-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded
based on the alias from of_device_id table.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240819040523.2801461-1-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The sparse tool complains as follows:
drivers/spi/spi-cadence-xspi.c:334:11: warning:
symbol 'cdns_mrvl_xspi_clk_div_list' was not declared. Should it be static?
This symbol is not used outside spi-cadence-xspi.c, so marks it static.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240819120031.3884913-1-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use scoped for_each_available_child_of_node_scoped() when iterating over
device nodes to make code a bit simpler.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240814143805.98874-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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0 is incorrect error code when failed to parse and map IRQ.
Replace OF specific old API for IRQ retrieval with a generic
one to fix this issue.
Fixes: 0f245463b01e ("spi: ppc4xx: handle irq_of_parse_and_map() errors")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20240814144525.2648450-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Zero and negative number is not a valid IRQ for in-kernel code and the
irq_of_parse_and_map() function returns zero on error. So this check for
valid IRQs should only accept values > 0.
Fixes: 44dab88e7cc9 ("spi: add spi_ppc4xx driver")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Link: https://patch.msgid.link/20240722141822.1052370-1-make24@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
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Its necessary to call pm_runtime_force_*() hooks as part of system
suspend/resume calls so that the runtime_pm hooks get called. This
ensures latest state of the IP is cached and restored during system
sleep. This is especially true if runtime autosuspend is enabled as
runtime suspend hooks may not be called at all before system sleeps.
Without this patch, OSPI NOR enumeration (READ_ID) fails during resume
as context saved during suspend path is inconsistent.
Fixes: 078d62de433b ("spi: cadence-qspi: add system-wide suspend and resume callbacks")
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://patch.msgid.link/20240814151237.3856184-1-vigneshr@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Large blocks of data time out when reading because we don't wait long
enough for the transfer to complete. Scale our timeouts based on the
amount of data we are tranferring, with a healthy dose of pessimism.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20240809201540.3363243-1-sean.anderson@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
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The effective SPI clock frequency should never exceed speed_hz
otherwise this might result in undefined behavior of the SPI device.
Currently the scldiv calculation could violate this constraint.
For the example parameters perclk_rate = 24 MHz and speed_hz = 7 MHz,
the function fsl_lpspi_set_bitrate will determine perscale = 0 and
scldiv = 1, which is a effective SPI clock of 8 MHz.
So fix this by rounding up the quotient of perclk_rate and speed_hz.
While this never change within the loop, we can pull this out.
Fixes: 5314987de5e5 ("spi: imx: add lpspi bus driver")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240804113611.83613-1-wahrenst@gmx.net
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add missing MODULE_DEVICE_TABLE definition for automatic loading of the
driver when it is built as a module.
Fixes: eb8d6d464a27 ("spi: add Renesas RPC-IF driver")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20240731072955.224125-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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When the of_device_id entry for "rohm,bh2228fv" was added, the
corresponding spi_device_id was forgotten, causing a warning message
during boot-up:
SPI driver spidev has no spi_device_id for rohm,bh2228fv
Fix module autoloading and shut up the warning by adding the missing
entry.
Fixes: fc28d1c1fe3b3e2f ("spi: spidev: add correct compatible for Rohm BH2228FV")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/cb571d4128f41175f31319cd9febc829417ea167.1722346539.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
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xSPI block requires 64 bit operation for proper Marvell SDMA handling.
Disallow bulding on targets without 64 bit support.
Signed-off-by: Witold Sadowski <wsadowski@marvell.com>
Link: https://patch.msgid.link/20240730131627.1874257-1-wsadowski@marvell.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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firmware
If the value of max_speed_hz is 0, it may cause a division by zero
error in hisi_calc_effective_speed().
The value of max_speed_hz is provided by firmware.
Firmware is generally considered as a trusted domain. However, as
division by zero errors can cause system failure, for defense measure,
the value of max_speed is validated here. So 0 is regarded as invalid
and an error code is returned.
Signed-off-by: Devyn Liu <liudingyuan@huawei.com>
Reviewed-by: Jay Fang <f.fangjian@huawei.com>
Link: https://patch.msgid.link/20240730032040.3156393-3-liudingyuan@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The speed specified by the user is used to calculate the clk_div based
on the max_speed_hz in hisi_calc_effective_speed. A very low speed
value can lead to a clk_div larger than the variable range. Avoid this
by setting the min_speed_hz so that such a small speed value is
rejected. __spi_validate() in spi.c will return -EINVAL for the
specified speed_hz lower than min_speed_hz.
Signed-off-by: Devyn Liu <liudingyuan@huawei.com>
Reviewed-by: Jay Fang <f.fangjian@huawei.com>
Link: https://patch.msgid.link/20240730032040.3156393-2-liudingyuan@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Witold Sadowski <wsadowski@marvell.com>:
This patch series adds support for the second version of the Marvell
hardware overlay for the Cadence xSPI IP block. The overlay is a hardware
change made around the original xSPI block. It extends xSPI features with
clock configuration, interrupt masking, and full-duplex, variable-length SPI
operations.
These functionalities allow the xSPI block to operate not only with memory
devices but also with simple SPI devices and TPM devices.
Example ACPI entry:
Device (SPI0) {
Name (_HID, "PRP0001") // ACPI_DT_NAMESPACE_HID
Name (_UID, 0)
Name (_DDN, "SPI controller 0")
Name (_CCA, ONE)
Method (_STA) {Return (0xF)}
Name (_CRS, ResourceTemplate() {
QWordMemory ( ResourceConsumer,// ResourceUsage
PosDecode, // Decode
MinFixed, // MinType
MaxFixed, // MaxType
NonCacheable, // MemType
ReadWrite, // ReadWriteType
0, // AddressGranularity
0x804000000000, // MinAddress
0x804000001037, // MaxAddress
0, // AddressTranslation
0x1038) // AddressLength
QWordMemory ( ResourceConsumer,// ResourceUsage
PosDecode, // Decode
MinFixed, // MinType
MaxFixed, // MaxType
NonCacheable, // MemType
ReadWrite, // ReadWriteType
0, // AddressGranularity
0x804010000000, // MinAddress
0x804010000007, // MaxAddress
0, // AddressTranslation
0x8) // AddressLength
QWordMemory ( ResourceConsumer,// ResourceUsage
PosDecode, // Decode
MinFixed, // MinType
MaxFixed, // MaxType
NonCacheable, // MemType
ReadWrite, // ReadWriteType
0, // AddressGranularity
0x804000002000, // MinAddress
0x804000004027, // MaxAddress
0, // AddressTranslation
0x2028) // AddressLength
QWordMemory ( ResourceConsumer,// ResourceUsage
PosDecode, // Decode
MinFixed, // MinType
MaxFixed, // MaxType
NonCacheable, // MemType
ReadWrite, // ReadWriteType
0, // AddressGranularity
0x804000008000, // MinAddress
0x804000008237, // MaxAddress
0, // AddressTranslation
0x238) // AddressLength
Interrupt(ResourceConsumer, Edge, ActiveHigh, Exclusive) { 0x7A }
})
Name (_DSD, Package() {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "compatible", "marvell,cn10-xspi-nor"},
Package () { "reg", 0x8040},
}
})
} // SPI0
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Merge series from Marcelo Schmitt <marcelo.schmitt@analog.com>:
This patch series extends the SPI bitbang, gpio, and spi-engine controllers to
support configurable MOSI line idle states.
It then introduces the ad4000 driver which uses the MOSI idle configuration to
provide improved support for the AD4000 series of ADCs.
Documentation is added describing the new extension to the SPI protocol.
The currently supported wiring modes for AD4000 devices were documented under
IIO documentation directory.
Change log v6 -> v7:
[Device tree]
No changes to device tree from v6 to v7.
[SPI]
spi.c: Removed blank line added in code not related to MOSI idle feature.
spi: bitbang: Rewrapped commit message.
spi: bitbang: Rebased bitbang patch on top of spi for-next branch.
[IIO]
ad4000: Checked gain-milli read from dt and made it match one of supported gains or fail.
ad4000: Added blank lines to improve code readability.
ad4000: return 0; when known that no errors occurred.
Link to v6: https://lore.kernel.org/linux-iio/cover.1719686465.git.marcelo.schmitt@analog.com/
Link to v5: https://lore.kernel.org/linux-iio/cover.1719351923.git.marcelo.schmitt@analog.com/
Link to v4: https://lore.kernel.org/linux-iio/cover.1718749981.git.marcelo.schmitt@analog.com/
Link to v3: https://lore.kernel.org/linux-iio/cover.1717539384.git.marcelo.schmitt@analog.com/
Link to v2: https://lore.kernel.org/linux-iio/cover.1712585500.git.marcelo.schmitt@analog.com/
Link to v1: https://lore.kernel.org/linux-iio/cover.1711131830.git.marcelo.schmitt@analog.com/
Prerequisite patches to apply this series to IIO testing branch:
c3358a746e078d0f9048732c90fdab4f37c00e0d "spi: bitbang: Convert unsigned to unsigned int"
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/commit/?id=c3358a746e078d0f9048732c90fdab4f37c00e0d
f261172d39f358dcecce13c310690d3937e0cca6 "spi: bitbang: Use typedef for txrx_*() callbacks"
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/commit/?id=f261172d39f358dcecce13c310690d3937e0cca6
6ecdb0aa4dca62d236a659426e11e6cf302e8f18 "spi: axi-spi-engine: Add SPI_CS_HIGH support"
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/commit/?h=for-6.11&id=6ecdb0aa4dca62d236a659426e11e6cf302e8f18
Prerequisite patches to apply the series to SPI for-next brach:
ef60f9ca26d33d0f8e1a709771c61d3e96f64559 "docs: iio: add documentation for adis16480 driver"
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git/commit/?h=testing&id=ef60f9ca26d33d0f8e1a709771c61d3e96f64559
Thanks,
Marcelo
Marcelo Schmitt (7):
spi: Enable controllers to extend the SPI protocol with MOSI idle
configuration
spi: bitbang: Implement support for MOSI idle state configuration
spi: spi-gpio: Add support for MOSI idle state configuration
spi: spi-axi-spi-engine: Add support for MOSI idle configuration
dt-bindings: iio: adc: Add AD4000
iio: adc: Add support for AD4000
Documentation: Add AD4000 documentation
.../bindings/iio/adc/adi,ad4000.yaml | 197 +++++
Documentation/iio/ad4000.rst | 131 ++++
Documentation/iio/index.rst | 1 +
Documentation/spi/spi-summary.rst | 83 ++
MAINTAINERS | 9 +
drivers/iio/adc/Kconfig | 12 +
drivers/iio/adc/Makefile | 1 +
drivers/iio/adc/ad4000.c | 722 ++++++++++++++++++
drivers/spi/spi-axi-spi-engine.c | 15 +-
drivers/spi/spi-bitbang.c | 24 +
drivers/spi/spi-gpio.c | 12 +-
drivers/spi/spi.c | 6 +
include/linux/spi/spi_bitbang.h | 1 +
include/uapi/linux/spi/spi.h | 5 +-
14 files changed, 1213 insertions(+), 6 deletions(-)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml
create mode 100644 Documentation/iio/ad4000.rst
create mode 100644 drivers/iio/adc/ad4000.c
base-commit: 986da024b99a72e64f6bdb3f3f0e52af024b1f50
prerequisite-patch-id: 76a35c35c2af889be2ff20052da02df561b3d71b
prerequisite-patch-id: ce5abb83d4f04e72c69d0df4ded79077065cd649
prerequisite-patch-id: b30f54a92e47dbad33ca7450089c7b19610e9cf2
--
2.43.0
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In order to avoid blocking for an excessive amount of time, eventually
impacting on system responsiveness, interrupt handlers should finish
executing in as little time as possible.
Use threaded interrupt and move the SPI transfer handling (both
CPU and DMA) for the non-spimem case to an interrupt thread instead.
For SPI-MEM (IPM) controllers, handling is kept in the blocking
interrupt as it simply consists in signalling completion.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patch.msgid.link/20240726114721.142196-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a comma between expression statements by a semicolon.
Fixes: 3e0cf4d3fc29 ("spi: meson-spicc: add a linear clock divider support")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20240716091151.1434450-1-nichen@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
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Zero and negative number is not a valid IRQ for in-kernel code and the
irq_of_parse_and_map() function returns zero on error. So this check for
valid IRQs should only accept values > 0.
Fixes: 44dab88e7cc9 ("spi: add spi_ppc4xx driver")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Link: https://patch.msgid.link/20240724084047.1506084-1-make24@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
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This adds a check on xfer->len to avoid emitting an XFER_BITS
instruction for empty transfers in the AXI SPI Engine driver. This
avoids unnecessary delays caused by executing an instruction that has
no effect on the actual SPI transfer.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240723-spi-axi-spi-engine-opt-bpw-v1-1-2625ba4c4387@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Implement MOSI idle low and MOSI idle high to better support peripherals
that request specific MOSI behavior.
Acked-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://patch.msgid.link/f237166c7bbe0a1cdabce243b97484bf2f428143.1720810545.git.marcelo.schmitt@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Implement MOSI idle low and MOSI idle high to better support peripherals
that request specific MOSI behavior.
Acked-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://patch.msgid.link/629c55a10005ba26825c3a6a19184372ef81b3e1.1720810545.git.marcelo.schmitt@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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