Enable runtime pm support for spi-imx driver.
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Link: https://lore.kernel.org/r/20200727063354.17031-1-xiaoning.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add a DT binding documentation for the MT8192 soc.
Signed-off-by: leilk.liu <leilk.liu@mediatek.com>
Link: https://lore.kernel.org/r/20200721122436.31544-1-leilk.liu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

This patch add spi support for mt8192 IC.
Signed-off-by: leilk.liu <leilk.liu@mediatek.com>
Link: https://lore.kernel.org/r/20200721122436.31544-2-leilk.liu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add support to SPI controller on Intel Atom based Lightning Mountain
SoC which reuses the Lantiq SPI controller IP.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/7d644e5d03ef534f719763e5c823c1673e53d1a5.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add support to SPI controller on Intel Atom based Lightning Mountain SoC
which reuses Lantiq SPI controller IP.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/4d61a75381aca9479f9fc15d07a7b05534da6bb3.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Moving interrupt configuration to SoC specific data structure helps to add
support for newer SoCs on which SPI controller with lesser interrupt lines
compared to existing chipsets.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/7eb6d863515245fedfa0296c72082df107367d07.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

On newer chipsets, SPI controller has fifos of larger size.
So add the fifo size bit mask entry in SoC specific data structure.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/a0889abf17a9fbc7077f10be0f0342b7ebdf9361.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

On newer chipsets interrupt need to be acknowledged as they use
different interrupt controller which does not acknowledge the
interrupts automatically.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/608923b484d9ef239b44bb545c0b79b27030a6ae.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Address of Interrupt control registers are different on new chipsets.
So move them to SoC specific data structure.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/f0f9723a30ea9c2ee48d2199f7512af9e15803b0.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Existing driver supports only single core SoC. New multicore platforms uses
the same driver/IP so SMP support is required. This patch adds multicore
support in the driver.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/d6663296b41f102c582fda08e71f62b72ca05d5d.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

In full duplex mode, rx overflow error is observed. To overcome the error,
wait until the complete data got received and proceed further.

Fixes: 17f84b79 ("spi: lantiq-ssc: add support for Lantiq SSC SPI controller")
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Link: https://lore.kernel.org/r/efb650b0faa49a00788c4e0ca8ef7196bdba851d.1594957019.git.eswara.kota@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Drivers using legacy PM have to manage PCI states and device's PM states
themselves. They also need to take care of configuration registers.

With improved and powerful support of generic PM, PCI Core takes care of
above mentioned, device-independent, jobs.

This driver makes use of PCI helper functions like
pci_save/restore_state(), pci_enable/disable_device(), pci_enable_wake()
and pci_set_power_state() to do required operations. In generic mode, they
are no longer needed.

Change function parameter in both .suspend() and .resume() to
"struct device*" type. Use dev_get_drvdata() to get drv data.

Compile-tested only.
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Link: https://lore.kernel.org/r/20200720155714.714114-1-vaibhavgupta40@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

This converts the PPC4xx SPI driver to use GPIO descriptors.

The driver is already just picking some GPIOs from the device
tree so the conversion is pretty straight forward. However
this driver is looking form a pure "gpios" property rather
than the standard binding "cs-gpios" so we need to add a new
exception to the gpiolib OF parser to allow this for this
driver's compatibles.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20200714072226.26071-1-linus.walleij@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

The spi cadence driver should support spi-cs-high in mode bits
so that the peripherals that needs the chip select to be high active can
use it. Add the SPI-CS-HIGH flag in the supported mode bits.
Signed-off-by: Shreyas Joshi <shreyas.joshi@biamp.com>
Link: https://lore.kernel.org/r/20200710211655.1564-1-shreyas.joshi@biamp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Call the put function after probe successfully. Otherwise, the lpspi
module will keep active status until the first spi transfer called.

Disable runtime pm when probe fails. There is no need to active runtime
pm after probe failed.
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Link: https://lore.kernel.org/r/20200714075251.12777-2-xiaoning.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series "Add support for [H]SCIF/TMU/CMT/THS/SDHI/MSIOF/CAN[FD]/I2C/IIC/RWDT on R8A774E1" from Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>:

Hi All,

This patch series enables support for following on RZ/G2H SoC,
* CPU OPP
* THS
* CMT/TMU
* I2C/IIC
* MSIOF
* RWDT
* SDHI
* SCIF/HSCIF
* CAN/CANFD

Cheers,
Prabhakar

Lad Prabhakar (14):
  dt-bindings: thermal: rcar-gen3-thermal: Add r8a774e1 support
  dt-bindings: timer: renesas,cmt: Document r8a774e1 CMT support
  arm64: dts: renesas: r8a774e1: Add SCIF and HSCIF nodes
  arm64: dts: renesas: r8a774e1: Add SDHI nodes
  dt-bindings: i2c: renesas,i2c: Document r8a774e1 support
  dt-bindings: i2c: renesas,iic: Document r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add I2C and IIC-DVFS support
  dt-bindings: spi: renesas,sh-msiof: Add r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add MSIOF nodes
  dt-bindings: watchdog: renesas,wdt: Document r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add RWDT node
  dt-bindings: can: rcar_can: Document r8a774e1 support
  dt-bindings: can: rcar_canfd: Document r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add CAN[FD] support

Marian-Cristian Rotariu (6):
  arm64: dts: renesas: r8a774e1: Add operating points
  thermal: rcar_gen3_thermal: Add r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add RZ/G2H thermal support
  arm64: dts: renesas: r8a774e1: Add CMT device nodes
  dt-bindings: timer: renesas,tmu: Document r8a774e1 bindings
  arm64: dts: renesas: r8a774e1: Add TMU device nodes

 .../devicetree/bindings/i2c/renesas,i2c.txt   |   1 +
 .../devicetree/bindings/i2c/renesas,iic.txt   |   1 +
 .../devicetree/bindings/net/can/rcar_can.txt  |   1 +
 .../bindings/net/can/rcar_canfd.txt           |   1 +
 .../bindings/spi/renesas,sh-msiof.yaml        |   1 +
 .../bindings/thermal/rcar-gen3-thermal.yaml   |   1 +
 .../bindings/timer/renesas,cmt.yaml           |   2 +
 .../devicetree/bindings/timer/renesas,tmu.txt |   1 +
 .../bindings/watchdog/renesas,wdt.yaml        |   1 +
 arch/arm64/boot/dts/renesas/r8a774e1.dtsi     | 713 +++++++++++++++++-
 drivers/thermal/rcar_gen3_thermal.c           |   4 +
 11 files changed, 715 insertions(+), 12 deletions(-)

--
2.17.1

Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
struct 'spi_acpi_match' becomes defined but unused.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-amd.c:297:36: warning: ‘spi_acpi_match’ defined but not used [-Wunused-const-variable=]
 297 | static const struct acpi_device_id spi_acpi_match[] = {
 | ^~~~~~~~~~~~~~
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-15-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
struct 'pxa2xx_spi_acpi_match' becomes defined but unused.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-pxa2xx.c:1435:36: warning: ‘pxa2xx_spi_acpi_match’ defined but not used [-Wunused-const-variable=]
 1435 | static const struct acpi_device_id pxa2xx_spi_acpi_match[] = {
 | ^~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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/20200717135424.2442271-14-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

The only way this driver can be probed by MFD via its parent device.

No other reference to 'microchip,at91sam9g45-usart-spi' exists in the kernel.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-at91-usart.c:684:34: warning: ‘at91_usart_spi_dt_ids’ defined but not used [-Wunused-const-variable=]
 684 | static const struct of_device_id at91_usart_spi_dt_ids[] = {
 | ^~~~~~~~~~~~~~~~~~~~~
Suggested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Radu Pirea <radu_nicolae.pirea@upb.ro>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-13-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'io_base_addr' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'pkt_tx_buff' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'pkt_rx_buff' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'dma' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'use_dma' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'save_total_len' not described in 'pch_spi_data'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200717135424.2442271-12-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Function parameter or member 'slavecs' not described in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Function parameter or member 'slavebus' not described in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Excess function parameter 'flashcs' description in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Excess function parameter 'flashbus' description in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:902: warning: Function parameter or member 'dev' not described in 'zynqmp_qspi_suspend'
 drivers/spi/spi-zynqmp-gqspi.c:902: warning: Excess function parameter '_dev' description in 'zynqmp_qspi_suspend'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-11-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-zynq-qspi.c:143: warning: Function parameter or member 'dev' not described in 'zynq_qspi'
 drivers/spi/spi-zynq-qspi.c:334: warning: Function parameter or member 'spi' not described in 'zynq_qspi_config_op'
 drivers/spi/spi-zynq-qspi.c:334: warning: Excess function parameter 'qspi' description in 'zynq_qspi_config_op'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Cc: Sureshkumar Relli <nagasure@xilinx.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-10-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Also demote non-worthy kerneldoc headers to standard comment blocks.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-pl022.c:304: warning: cannot understand function prototype: 'enum ssp_writing '
 drivers/spi/spi-pl022.c:330: warning: Function parameter or member 'loopback' not described in 'vendor_data'
 drivers/spi/spi-pl022.c:398: warning: Function parameter or member 'rx_lev_trig' not described in 'pl022'
 drivers/spi/spi-pl022.c:398: warning: Function parameter or member 'tx_lev_trig' not described in 'pl022'
 drivers/spi/spi-pl022.c:398: warning: Function parameter or member 'dma_running' not described in 'pl022'
 drivers/spi/spi-pl022.c:670: warning: Function parameter or member 'pl022' not described in 'readwriter'
 drivers/spi/spi-pl022.c:1250: warning: Function parameter or member 'irq' not described in 'pl022_interrupt_handler'
 drivers/spi/spi-pl022.c:1250: warning: Function parameter or member 'dev_id' not described in 'pl022_interrupt_handler'
 drivers/spi/spi-pl022.c:1343: warning: Function parameter or member 'pl022' not described in 'set_up_next_transfer'
 drivers/spi/spi-pl022.c:1343: warning: Function parameter or member 'transfer' not described in 'set_up_next_transfer'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Sachin Verma <sachin.verma@st.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-9-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-s3c64xx.c:150: warning: Function parameter or member 'quirks' not described in 's3c64xx_spi_port_config'
 drivers/spi/spi-s3c64xx.c:150: warning: Function parameter or member 'clk_ioclk' not described in 's3c64xx_spi_port_config'
 drivers/spi/spi-s3c64xx.c:189: warning: Function parameter or member 'pdev' not described in 's3c64xx_spi_driver_data'
 drivers/spi/spi-s3c64xx.c:189: warning: Function parameter or member 'rx_dma' not described in 's3c64xx_spi_driver_data'
 drivers/spi/spi-s3c64xx.c:189: warning: Function parameter or member 'tx_dma' not described in 's3c64xx_spi_driver_data'
 drivers/spi/spi-s3c64xx.c:189: warning: Function parameter or member 'port_conf' not described in 's3c64xx_spi_driver_data'
 drivers/spi/spi-s3c64xx.c:189: warning: Function parameter or member 'port_id' not described in 's3c64xx_spi_driver_data'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Andi Shyti <andi@etezian.org>
Cc: Jaswinder Singh <jassi.brar@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
Link: https://lore.kernel.org/r/20200717135424.2442271-8-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Looks like it hasn't ever been checked.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-meson-spicc.c: In function ‘meson_spicc_reset_fifo’:
 drivers/spi/spi-meson-spicc.c:365:6: warning: variable ‘data’ set but not used [-Wunused-but-set-variable]
 365 | u32 data;
 | ^~~~
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: linux-amlogic@lists.infradead.org
Link: https://lore.kernel.org/r/20200717135424.2442271-7-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-meson-spifc.c:80: warning: Function parameter or member 'dev' not described in 'meson_spifc'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Beniamino Galvani <b.galvani@gmail.com>
Cc: linux-amlogic@lists.infradead.org
Link: https://lore.kernel.org/r/20200717135424.2442271-6-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

ep93xx_spi_read_write() changed is parameters, but the function
documentation was left unchanged.  Let's realign.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-ep93xx.c:227: warning: Function parameter or member 'master' not described in 'ep93xx_spi_read_write'
 drivers/spi/spi-ep93xx.c:227: warning: Excess function parameter 'espi' description in 'ep93xx_spi_read_write'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Mika Westerberg <mika.westerberg@iki.fi>
Link: https://lore.kernel.org/r/20200717135424.2442271-5-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-davinci.c:249: warning: Function parameter or member 'dspi' not described in 'davinci_spi_get_prescale'
 drivers/spi/spi-davinci.c:249: warning: Function parameter or member 'max_speed_hz' not described in 'davinci_spi_get_prescale'
 drivers/spi/spi-davinci.c:249: warning: Excess function parameter 'maxspeed_hz' description in 'davinci_spi_get_prescale'
 drivers/spi/spi-davinci.c:719: warning: Function parameter or member 'data' not described in 'dummy_thread_fn'
 drivers/spi/spi-davinci.c:719: warning: Excess function parameter 'context_data' description in 'dummy_thread_fn'
 drivers/spi/spi-davinci.c:735: warning: Function parameter or member 'data' not described in 'davinci_spi_irq'
 drivers/spi/spi-davinci.c:735: warning: Excess function parameter 'context_data' description in 'davinci_spi_irq'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200717135424.2442271-4-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

No attempt has been made to document any of the demoted functions here.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-bitbang.c:181: warning: Function parameter or member 'spi' not described in 'spi_bitbang_setup'
 drivers/spi/spi-bitbang.c:215: warning: Function parameter or member 'spi' not described in 'spi_bitbang_cleanup'
 drivers/spi/spi-bitbang.c:434: warning: Function parameter or member 'bitbang' not described in 'spi_bitbang_stop'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200717135424.2442271-3-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Kerneldoc function parameter descriptions must be in '@.*: ' format.

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-loopback-test.c:897: warning: Function parameter or member 'spi' not described in 'spi_test_execute_msg'
 drivers/spi/spi-loopback-test.c:897: warning: Function parameter or member 'test' not described in 'spi_test_execute_msg'
 drivers/spi/spi-loopback-test.c:897: warning: Function parameter or member 'tx' not described in 'spi_test_execute_msg'
 drivers/spi/spi-loopback-test.c:897: warning: Function parameter or member 'rx' not described in 'spi_test_execute_msg'
 drivers/spi/spi-loopback-test.c:970: warning: Function parameter or member 'spi' not described in 'spi_test_run_test'
 drivers/spi/spi-loopback-test.c:970: warning: Function parameter or member 'test' not described in 'spi_test_run_test'
 drivers/spi/spi-loopback-test.c:970: warning: Function parameter or member 'tx' not described in 'spi_test_run_test'
 drivers/spi/spi-loopback-test.c:970: warning: Function parameter or member 'rx' not described in 'spi_test_run_test'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Martin Sperl <kernel@martin.sperl.org>
Cc: linux-spi@vger.kernel.org
Link: https://lore.kernel.org/r/20200717135424.2442271-2-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Document RZ/G2H (R8A774E1) SoC bindings.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1594811350-14066-15-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series "spi: bcm2835/bcm2835aux: support effective_speed_hz" from Marc Kleine-Budde <mkl@pengutronix.de>:

Hello,

I've picked up and forward ported Martin Sperl's patches which add support for
effective_speed_hz to the SPI controllers found on all raspberry pi models.

See the following patch, which adds this feature to the SPI core, for more
information:

    5d7e2b5e spi: core: allow reporting the effectivly used speed_hz for a transfer

regards,
Marc

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Convert clk_enable() to clk_prepare_enable() and clk_disable() to
clk_disable_unprepare() respectively in the spi-coldfire-qspi.c.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Link: https://lore.kernel.org/r/1594790807-32319-2-git-send-email-zhangqing@loongson.cnSigned-off-by: Mark Brown <broonie@kernel.org>

The industry refers to these flash types as "SPI NOR" and
"SPI NAND". Be consistent and use the same acronyms.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200716051144.568606-1-tudor.ambarus@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

Optimezed mem*io operations are defined for LE platforms, use them.

The ARM and !ARCH_EBSA110 dependencies for COMPILE_TEST were added
only for the _memcpy_fromio()/_memcpy_toio() functions. Drop these
dependencies.

Tested unaligned accesses on both sama5d2 and sam9x60 QSPI controllers
using SPI NOR flashes, everything works ok. The following performance
improvement can be seen when running mtd_speedtest:

sama5d2_xplained (mx25l25635e)
- before:
	mtd_speedtest: eraseblock write speed is 983 KiB/s
	mtd_speedtest: eraseblock read speed is 6150 KiB/s
- after:
	mtd_speedtest: eraseblock write speed is 1055 KiB/s
	mtd_speedtest: eraseblock read speed is 20144 KiB/s

sam9x60ek (sst26vf064b)
- before:
	mtd_speedtest: eraseblock write speed is 4770 KiB/s
	mtd_speedtest: eraseblock read speed is 8062 KiB/s
- after:
	mtd_speedtest: eraseblock write speed is 4524 KiB/s
	mtd_speedtest: eraseblock read speed is 21186 KiB/s
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200716043139.565734-1-tudor.ambarus@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

Currently we always defer idling of controllers to the SPI thread, the goal
being to ensure that we're doing teardown that's not suitable for atomic
context in an appropriate context and to try to batch up more expensive
teardown operations when the system is under higher load, allowing more
work to be started before the SPI thread is scheduled. However when the
controller does not require any substantial work to idle there is no need
to do this, we can instead save the context switch and immediately mark
the controller as idle. This is particularly useful for systems where there
is frequent but not constant activity.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20200715163610.9475-1-broonie@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Change doubled word "as" to "as a".

Change "Return: Return:" in kernel-doc notation to have only one
"Return:".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-spi@vger.kernel.org
Link: https://lore.kernel.org/r/40354d64-be71-3952-a980-63a76a278145@infradead.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Setting spi_transfer->effective_speed_hz in transfer_one so that
it can get used in cs_change_delay configured with delay as a muliple
of SPI clock cycles.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20200709074120.110069-3-mkl@pengutronix.deSigned-off-by: Mark Brown <broonie@kernel.org>

Setting spi_transfer->effective_speed_hz in transfer_one so that
it can get used in cs_change_delay configured with delay as a muliple
of SPI clock cycles.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20200709074120.110069-2-mkl@pengutronix.deSigned-off-by: Mark Brown <broonie@kernel.org>

Convert clk_enable() to clk_prepare_enable() and clk_disable() to
clk_disable_unprepare() respectively in the spi-omap-uwire.c.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Link: https://lore.kernel.org/r/1594790807-32319-1-git-send-email-zhangqing@loongson.cnSigned-off-by: Mark Brown <broonie@kernel.org>