- 31 Mar, 2021 3 commits
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Linus Walleij authored
This converts the PL022 driver to use GPIO descriptors instead of the old global GPIO numberspace. Since the driver handles messages on its own it needs to manage the GPIO descriptor directly. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210330164907.2346010-3-linus.walleij@linaro.orgSigned-off-by:
Mark Brown <broonie@kernel.org>
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Linus Walleij authored
The SPI core looks up GPIO lines from the device tree, so let's stop trying to do that on our own and rely on the core to do this for us. In addition to the GPIO line we also need to keep track of the chip select index separately, as the native chip select needs this index. The driver was reusing the same GPIO array for native chip select indices, so keep this in a separate state variable instead. The facility to pass in custom GPIO lines from the platform data can go, because even if we do have out-of-tree code that want to use platform data, they can soon pass in GPIOs using machine GPIO descriptor tables which will be available after the next step when we convert the driver to using GPIO descriptors. The implicit inclusion of <linux/of.h> is made explicit as we no longer need to include <linux/of_gpio.h>. Signed-off-by:
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Linus Walleij authored
Drop the custom cs_control() assigned through platform data, we have no in-tree users and the only out-of-tree use I have ever seen of this facility is to pull GPIO lines, which is something the driver can already do for us. Signed-off-by:
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- 29 Mar, 2021 1 commit
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Linus Walleij authored
When using the device tree, which must be considered normal these days, in order to get some kind of normal functionality out of the PL022 users have to actively go into the device tree and edit the SPI clients like this: spi { compatible = "arm,pl022"; num-cs = <1>; cs-gpios = <&gpio 0 GPIO_ACTIVE_LOW>; foo@0 { compatible = "foo"; reg = <0>; pl022,interface = <0>; pl022,com-mode = <0>; }; }; Otherwise the PL022 will come up as a client (slave) and using polling mode. This is quite unintuitive and many users will get their device trees wrong. Alter the defaults such that we come up in host mode (master) and use interrupt mode. Signed-off-by:
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- 25 Mar, 2021 4 commits
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Mark Brown authored
add compatible entry in nxp_fspi driver for imx8mp @Shawn: If this series is accepted, can you apply the DTS patches from series v2? http://lists.infradead.org/pipermail/linux-arm-kernel/2021-March/643292.html http://lists.infradead.org/pipermail/linux-arm-kernel/2021-March/643293.html Changes in v4: rebased against: git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next a43e89624baea ("Merge remote-tracking branch 'spi/for-5.13' into spi-next") Changes in v3: - seperate spi changes from series: http://lists.infradead.org/pipermail/linux-arm-kernel/2021-March/643289.html into own series as Kuldeep suggested and rebased against git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next 144c79ef ("Merge tag 'perf-tools-fixes-for-v5.12-2020-03-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux") - no changes, rebased against git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next 144c79ef Merge tag 'perf-tools-fixes-for-v5.12-2020-03-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Changes in v2: - work in comments from Marco add own compatible entry for imx8mp Heiko Schocher (2): spi: fspi: enable fspi driver for on imx8mp dt-bindings: spi: add compatible entry for imx8mp in FlexSPI controller Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt | 1 + drivers/spi/spi-nxp-fspi.c | 1 + 2 files changed, 2 insertions(+) -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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Eddie James authored
Updated restricted chips have trouble processing multiple sequenced operations. So remove the capability to sequence multiple operations and reduce the maximum transfer size to 8 bytes. Signed-off-by:
Eddie James <eajames@linux.ibm.com> Reviewed-by:
Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20210324220516.41192-1-eajames@linux.ibm.comSigned-off-by:
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Heiko Schocher authored
add compatible entry "nxp,imx8mp-fspi" in NXP FlexSPI controller Signed-off-by:
Heiko Schocher <hs@denx.de> Link: https://lore.kernel.org/r/20210316075928.1763460-3-hs@denx.deSigned-off-by:
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Heiko Schocher authored
add compatible entry in nxp_fspi driver for imx8mp. Signed-off-by:
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- 24 Mar, 2021 11 commits
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Jay Fang authored
Fix checkpatch error: ERROR: trailing whitespace #1198: FILE: spi-pl022.c:1198: Signed-off-by:
Jay Fang <f.fangjian@huawei.com> Link: https://lore.kernel.org/r/1616566602-13894-12-git-send-email-f.fangjian@huawei.comSigned-off-by:
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Jay Fang authored
Fix checkpatch errors: ERROR: code indent should use tabs where possible #484: FILE: spi-rockchip.c:484: +^I | CR0_BHT_8BIT << CR0_BHT_OFFSET$ ERROR: code indent should use tabs where possible #485: FILE: spi-rockchip.c:485: +^I | CR0_SSD_ONE << CR0_SSD_OFFSET$ ERROR: code indent should use tabs where possible #486: FILE: spi-rockchip.c:486: +^I | CR0_EM_BIG << CR0_EM_OFFSET;$ Signed-off-by:
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Jay Fang authored
Fix checkpatch errors: ERROR: code indent should use tabs where possible #624: FILE: spi-mem.c:624: ERROR: code indent should use tabs where possible #626: FILE: spi-mem.c:626: ERROR: code indent should use tabs where possible #627: FILE: spi-mem.c:627: Signed-off-by:
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Jay Fang authored
Fix checkpatch error: ERROR: trailing statements should be on next line #85: FILE: spi-jcore.c:85: + if (speed == hw->speed_hz) return; Signed-off-by:
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Jay Fang authored
Fix checkpatch errors: ERROR: open brace '{' following function definitions go on the next line #54: FILE: spi-bitbang.c:54: ERROR: open brace '{' following function definitions go on the next line #82: FILE: spi-bitbang.c:82: ERROR: open brace '{' following function definitions go on the next line #110: FILE: spi-bitbang.c:110: Signed-off-by: -
Jay Fang authored
Fix checkpatch error: ERROR: open brace '{' following function definitions go on the next line #545: FILE: spi-dln2.c:545: +static int dln2_spi_rdwr(struct dln2_spi *dln2, const u8 *tx_data, + u8 *rx_data, u16 data_len, u8 attr) { Signed-off-by: -
Jay Fang authored
Fix checkpatch error: ERROR: space required before the open parenthesis '(' #295: FILE: spi-mtk-nor.c:295: + switch(op->data.dir) { Signed-off-by: -
Jay Fang authored
Fix checkpatch errors: ERROR: space prohibited before that ',' (ctx:WxW) #113: FILE: spi-omap-100k.c:113: + writew(data , spi100k->base + SPI_TX_MSB); ^ ERROR: space prohibited before that ',' (ctx:WxW) #249: FILE: spi-omap-100k.c:249: + writew(0x3e , spi100k->base + SPI_SETUP1); ^ ERROR: space prohibited before that ',' (ctx:WxW) #250: FILE: spi-omap-100k.c:250: + writew(0x00 , spi100k->base + SPI_STATUS); ^ ERROR: space prohibited before that ',' (ctx:WxW) #251: FILE: spi-omap-100k.c:251: + writew(0x3e , spi100k->base + SPI_CTRL); ^ Signed-off-by:
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Jay Fang authored
Fix checkpatch errors: ERROR: space prohibited before that ',' (ctx:WxW) #255: FILE: spi-pxa2xx-pci.c:255: + ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0, ^ ERROR: "foo* bar" should be "foo *bar" #621: FILE: spi-pxa2xx.c:621: +static void int_error_stop(struct driver_data *drv_data, const char* msg) Signed-off-by:
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Jay Fang authored
Fix checkpatch error: ERROR: space prohibited before that close parenthesis ')' #213: FILE: spi-sprd-adi.c:213: + rd_addr = (val & RD_ADDR_MASK ) >> RD_ADDR_SHIFT; Signed-off-by:
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Jay Fang authored
Fix checkpatch error: ERROR: space prohibited before that '++' (ctx:WxB) #1204: FILE: spi-topcliff-pch.c:1204: + for (i = 0; i < cnt; i ++) { ^ Signed-off-by:
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- 23 Mar, 2021 4 commits
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Leilk Liu authored
this patch adds mt8195 spi slave compatible support. Signed-off-by:
Leilk Liu <leilk.liu@mediatek.com> Link: https://lore.kernel.org/r/20210322055244.30179-5-leilk.liu@mediatek.comSigned-off-by:
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Leilk Liu authored
this patch adds max_fifo_size and must_rx compat support. Signed-off-by:
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Leilk Liu authored
Add a DT binding documentation for the MT8195 soc. Signed-off-by:
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Leilk Liu authored
Add a DT binding documentation for the MT8195 soc. Signed-off-by:
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- 19 Mar, 2021 1 commit
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Alain Volmat authored
stm32_spi_remove() accesses the driver's private data after calling spi_unregister_master() even though that function releases the last reference on the spi_master and thereby frees the private data. Fix by switching over to the new devm_spi_alloc_master() helper which keeps the private data accessible until the driver has unbound. Fixes: 8d559a64 ("spi: stm32: drop devres version of spi_register_master") Reported-by:
Lukas Wunner <lukas@wunner.de> Signed-off-by:
Alain Volmat <alain.volmat@foss.st.com> Link: https://lore.kernel.org/r/1616052290-10887-1-git-send-email-alain.volmat@foss.st.comSigned-off-by:
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- 17 Mar, 2021 2 commits
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Fabio Estevam authored
"SPI Controller driver" is a too generic description. Make it i.MX specific instead. Signed-off-by:
Fabio Estevam <festevam@gmail.com> Link: https://lore.kernel.org/r/20210316180922.239805-1-festevam@gmail.comSigned-off-by:
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Colin Ian King authored
There is a spelling mistake in a dev_err message. Fix it. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20210317093936.5572-1-colin.king@canonical.comSigned-off-by:
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- 16 Mar, 2021 5 commits
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Mark Brown authored
Merge series "spi: Adding support for software nodes" from Heikki Krogerus <heikki.krogerus@linux.intel.com>: Hi, The older API used to supply additional device properties for the devices - so mainly the function device_add_properties() - is going to be removed. The reason why the API will be removed is because it gives false impression that the properties are assigned directly to the devices, which has actually never been the case - the properties have always been assigned to a software fwnode which was then just directly linked with the device when the old API was used. By only accepting device properties instead of complete software nodes, the subsystems remove any change of taking advantage of the other features the software nodes have. The change that is required from the spi subsystem and the drivers is trivial. Basically only the "properties" member in struct spi_board_info, which was a pointer to struct property_entry, is replaced with a pointer to a complete software node. thanks, Heikki Krogerus (4): spi: Add support for software nodes ARM: pxa: icontrol: Constify the software node ARM: pxa: zeus: Constify the software node spi: Remove support for dangling device properties arch/arm/mach-pxa/icontrol.c | 12 ++++++++---- arch/arm/mach-pxa/zeus.c | 6 +++++- drivers/spi/spi.c | 21 ++++++--------------- include/linux/spi/spi.h | 7 +++---- 4 files changed, 22 insertions(+), 24 deletions(-) -- 2.30.1 base-commit: a38fd874
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Heikki Krogerus authored
>From now on only accepting complete software nodes. Signed-off-by:
Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20210303152814.35070-5-heikki.krogerus@linux.intel.comSigned-off-by:
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Heikki Krogerus authored
When device properties are supplied to the devices, in reality a software fwnode that holds those properties is created which is then assigned to the device. If the device properties are constant the software node can also be constant. Signed-off-by:
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Heikki Krogerus authored
When device properties are supplied to the devices, in reality a software fwnode that holds those properties is created which is then assigned to the device. If the device properties are constant the software node can also be constant. Signed-off-by:
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Heikki Krogerus authored
Making it possible for the drivers to assign complete software fwnodes to the devices instead of only the device properties in those nodes. Signed-off-by:
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- 12 Mar, 2021 9 commits
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Mark Brown authored
Merge series "spi: finalize 'delay_usecs' removal/transition" from Alexandru Ardelean <aardelean@deviqon.com>: A while back I started the introduction of the 'spi_delay' data type: https://lore.kernel.org/linux-spi/20190926105147.7839-1-alexandru.ardelean@analog.com/ Users of the 'delay_usecs' were removed from drivers. Now it's time to remove the 'delay_usecs' from the SPI subsystem and use only the 'delay' field. This changeset adapts all SPI drivers to do without 'delay_usecs'. Additionally, for greybus we need to adapt it to use the 'delay' in nano-seconds and convert it to micro-seconds. Alexandru Ardelean (10): spi: spi-axi-spi-engine: remove usage of delay_usecs spi: bcm63xx-spi: don't check 'delay_usecs' field spi: spi-bcm-qspi: replace 'delay_usecs' with 'delay.value' check spi: spi-sh: replace 'delay_usecs' with 'delay.value' in pr_debug spi: spi-tegra20-flash: don't check 'delay_usecs' field for spi transfer staging: greybus: spilib: use 'spi_delay_to_ns' for getting xfer delay spi: spi-falcon: remove check for 'delay_usecs' spi: fsl-espi: remove usage of 'delay_usecs' field spi: core: remove 'delay_usecs' field from spi_transfer spi: docs: update info about 'delay_usecs' Documentation/spi/spi-summary.rst | 7 +++++-- drivers/spi/spi-axi-spi-engine.c | 12 ++++-------- drivers/spi/spi-bcm-qspi.c | 2 +- drivers/spi/spi-bcm63xx.c | 2 +- drivers/spi/spi-falcon.c | 2 +- drivers/spi/spi-fsl-espi.c | 17 +++++------------ drivers/spi/spi-sh.c | 4 ++-- drivers/spi/spi-tegra20-sflash.c | 3 +-- drivers/spi/spi.c | 1 - drivers/staging/greybus/spilib.c | 5 ++++- include/linux/spi/spi.h | 12 ------------ 11 files changed, 24 insertions(+), 43 deletions(-) -- 2.29.2 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
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Alain Volmat authored
Avoid CONFIG_PM preprocessor check for pm suspend/resume callbacks and identify the functions with __maybe_unused. Signed-off-by:
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Alexandru Ardelean authored
The 'delay_usecs' field is no longer present on the spi_transfer struct. This change updates the doc to mention the usage of the (relatively) new 'delay' field. Signed-off-by:
Alexandru Ardelean <aardelean@deviqon.com> Link: https://lore.kernel.org/r/20210308145502.1075689-11-aardelean@deviqon.comSigned-off-by:
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Alexandru Ardelean authored
The 'delay' field in the spi_transfer struct is meant to replace the 'delay_usecs' field. However some cleanup was required to remove the uses of 'delay_usecs'. Now that it's been cleaned up, we can remove it from the kernel tree. Signed-off-by:
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Alexandru Ardelean authored
The 'delay_usecs' field is being removed from the spi_transfer struct. This change removes it from the SPI FSL ESPI driver. Signed-off-by:
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Alexandru Ardelean authored
The 'delay_usecs' field is being removed from the spi_transfer struct. This change removes it from the SPI Falcon driver. Signed-off-by:
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Alexandru Ardelean authored
The intent is the removal of the 'delay_usecs' field from the spi_transfer struct, as there is a 'delay' field that does the same thing. The spi_delay_to_ns() can be used to get the transfer delay. It works by using the 'delay_usecs' field first (if it is non-zero), and finally uses the 'delay' field. Since the 'delay_usecs' field is going away, this change makes use of the spi_delay_to_ns() function. This also means dividing the return value of the function by 1000, to convert it to microseconds. To prevent any potential faults when converting to microseconds and since the result of spi_delay_to_ns() is int, the delay is being computed in 32 bits and then clamped between 0 & U16_MAX. Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Acked-by:
Rui Miguel Silva <rmfrfs@gmail.com> Acked-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210308145502.1075689-7-aardelean@deviqon.comSigned-off-by:
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Alexandru Ardelean authored
The 'delay_usecs' field was handled for backwards compatibility in case there were some users that still configured SPI delay transfers with this field. They should all be removed by now. So we can remove the 'delay_usecs' handling in this driver. Signed-off-by:
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Alexandru Ardelean authored
The 'delay_usecs' field is going away. The replacement for it is the 'delay' field. So, we should print the 'delay.value' value instead. Signed-off-by:
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