If device_get_match_data returns NULL, devdata isn't being updated
properly. It is being used later in the function. Both devdata and
spi->devdata should be updated to avoid NULL pointer dereference.

Addresses-Coverity: ("NULL pointer dereference")
Fixes: 0e6521f1 ("spi: orion: Use device_get_match_data() helper")
Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Link: https://lore.kernel.org/r/20210408195718.GA3075166@LEGIONSigned-off-by: Mark Brown <broonie@kernel.org>

When some drivers use spi to send data, spi_transfer->speed_hz is
not assigned. If spidev->max_speed_hz is not assigned as well, it
will cause an error in configuring the clock.
Add a check for these two values before configuring the clock. An
error will be returned when they are not assigned.
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Link: https://lore.kernel.org/r/20210408103347.244313-2-xiaoning.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Call spi_master_get() holds the reference count to master device, thus
we need an additional spi_master_put() call to reduce the reference
count, otherwise we will leak a reference to master.

This commit fix it by removing the unnecessary spi_master_get().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210409082954.2906933-1-weiyongjun1@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Fixes: 944c01a8 ("spi: lpspi: enable runtime pm for lpspi")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Li <wangli74@huawei.com>
Link: https://lore.kernel.org/r/20210409095430.29868-1-wangli74@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/1617843307-53853-1-git-send-email-tiantao6@hisilicon.comSigned-off-by: Mark Brown <broonie@kernel.org>

Call spi_master_get() holds the reference count to master device, thus
we need an additional spi_master_put() call to reduce the reference
count, otherwise we will leak a reference to master.

This commit fix it by removing the unnecessary spi_master_get().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210409082955.2907950-1-weiyongjun1@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add the missing iounmap() before return from of_fsl_spi_probe()
in the error handling case.

Fixes: 0f0581b2 ("spi: fsl: Convert to use CS GPIO descriptors")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210401140350.1677925-1-yangyingliang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

A previous refactoring moved the chip select number handling
to the SPI core and we missed a leftover platform data user
in the ST spear platform. The spear is not using this
chipselect or PL022 for anything and should be using device
tree like the rest of the platform so just delete the
offending platform data.

Cc: Viresh Kumar <vireshk@kernel.org>
Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20210408075045.3435046-1-linus.walleij@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Use the device_get_match_data() helper instead of open coding.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1617258288-1490-1-git-send-email-tiantao6@hisilicon.comSigned-off-by: Mark Brown <broonie@kernel.org>

Fix warning Woverflow on type conversion reported on x86_64:

  drivers/spi/spi-hisi-kunpeng.c:361:9: warning: conversion from 'long unsigned int' to 'u32'
  {aka 'unsigned int'} changes value from '18446744073709551600' to '4294967280' [-Woverflow]

The registers are 32 bit, so fix by casting to u32.

Fixes: c770d863 ("spi: Add HiSilicon SPI Controller Driver for Kunpeng SoCs")
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1617762660-54681-1-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

struct spi_transfer is declared twice. One is declared at 24th line.
The blew one is not needed though. Remove the duplicate.
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Link: https://lore.kernel.org/r/20210401065904.994121-1-wanjiabing@vivo.comSigned-off-by: Mark Brown <broonie@kernel.org>

Hi,

This series picks up Ramuthevar's effort on converting the Cadence QSPI
bindings to yaml [0]. During the conversion process, I discovered that
some TI device tree files were not using the compatible correctly. Those
are fixed in patches 1-3.

[0] https://patchwork.kernel.org/project/spi-devel-general/patch/20201116031003.19062-6-vadivel.muruganx.ramuthevar@linux.intel.com/

Pratyush Yadav (3):
  arm64: dts: ti: k3-j721e-mcu: Fix ospi compatible
  arm64: dts: ti: k3-j7200-mcu: Fix ospi compatible
  arm64: dts: ti: k3-am64-main: Fix ospi compatible

Ramuthevar Vadivel Murugan (1):
  dt-bindings: spi: Convert cadence-quadspi.txt to cadence-quadspi.yaml

 .../bindings/spi/cadence-quadspi.txt          |  68 ---------
 .../bindings/spi/cdns,qspi-nor.yaml           | 143 ++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am64-main.dtsi      |   2 +-
 .../boot/dts/ti/k3-j7200-mcu-wakeup.dtsi      |   2 +-
 .../boot/dts/ti/k3-j721e-mcu-wakeup.dtsi      |   4 +-
 5 files changed, 147 insertions(+), 72 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/spi/cadence-quadspi.txt
 create mode 100644 Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml

--
2.30.0

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

There is no way as of now to have a parent or bus defining properties
for child nodes. For now, avoid it in the example to silence warnings on
dt_schema_check. We can figure out how to deal with actual dts files
later.

[p.yadav@ti.com: Fix how compatible is defined, make reset optional, fix
minor typos, remove subnode properties in example, update commit
message.]
Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210326130034.15231-5-p.yadav@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>

This driver supports SPI Controller for HiSilicon Kunpeng SoCs. This
driver supports SPI operations using FIFO mode of transfer.

DMA is not supported, and we just use IRQ mode for operation completion
notification.

Only ACPI firmware is supported.
Signed-off-by: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616836200-45827-1-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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>

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: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210330164907.2346010-2-linus.walleij@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

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: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210330164907.2346010-1-linus.walleij@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

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: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210328121530.1983081-1-linus.walleij@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

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

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: Mark Brown <broonie@kernel.org>

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: Mark Brown <broonie@kernel.org>

add compatible entry in nxp_fspi driver for imx8mp.
Signed-off-by: Heiko Schocher <hs@denx.de>
Link: https://lore.kernel.org/r/20210316075928.1763460-2-hs@denx.deSigned-off-by: Mark Brown <broonie@kernel.org>

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: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-11-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-10-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-9-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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 <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-8-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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 <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-7-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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 <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-6-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-5-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-4-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-3-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-2-git-send-email-f.fangjian@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Mark Brown <broonie@kernel.org>

this patch adds max_fifo_size and must_rx compat support.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Link: https://lore.kernel.org/r/20210322055244.30179-4-leilk.liu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add a DT binding documentation for the MT8195 soc.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Link: https://lore.kernel.org/r/20210322055244.30179-3-leilk.liu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add a DT binding documentation for the MT8195 soc.
Signed-off-by: leilk.liu <leilk.liu@mediatek.com>
Link: https://lore.kernel.org/r/20210322055244.30179-2-leilk.liu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

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: Mark Brown <broonie@kernel.org>

"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: Mark Brown <broonie@kernel.org>

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: Mark Brown <broonie@kernel.org>