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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: 944c01a889d9 ("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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add the missing iounmap() before return from of_fsl_spi_probe()
in the error handling case.
Fixes: 0f0581b24bd0 ("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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: c770d8631e18 ("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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.de
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.de
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: 8d559a64f00b ("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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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"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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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>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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Link: https://lore.kernel.org/r/20210303152814.35070-4-heikki.krogerus@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Link: https://lore.kernel.org/r/20210303152814.35070-3-heikki.krogerus@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20210303152814.35070-2-heikki.krogerus@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Avoid CONFIG_PM preprocessor check for pm suspend/resume
callbacks and identify the functions with __maybe_unused.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1615545329-5496-1-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-10-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-9-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The 'delay_usecs' field is being removed from the spi_transfer struct.
This change removes it from the SPI Falcon driver.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-8-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Alexandru Ardelean <aardelean@deviqon.com>
Acked-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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-6-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-5-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The 'delay_usecs' field is going away. The replacement for it is the
'delay' field. So, we should check for 'delay.value' being non-zero.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-4-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-3-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
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.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-2-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|