Pull MMC updates from Ulf Hansson:
"This time, this pull request contains changes crossing subsystems and
archs/platforms, which is mainly because of a bigger modernization of
moving from legacy GPIO to GPIO descriptors for MMC (by Linus
Walleij).
Additionally, once again, I am funneling changes to
drivers/misc/cardreader/* and drivers/memstick/* through my MMC tree,
mostly due to that we lack a maintainer for these.
Summary:
MMC core:
- Cleanup BKOPS support
- Introduce MMC_CAP_SYNC_RUNTIME_PM
- slot-gpio: Delete legacy slot GPIO handling
MMC host:
- alcor: Add new mmc host driver for Alcor Micro PCI based cardreader
- bcm2835: Several improvements to better recover from errors
- jz4740: Rework and fixup pre|post_req support
- mediatek: Add support for SDIO IRQs
- meson-gx: Improve clock phase management
- meson-gx: Stop descriptor on errors
- mmci: Complete the sbc error path by sending a stop command
- renesas_sdhi/tmio: Fixup reset/resume operations
- renesas_sdhi: Add support for r8a774c0 and R7S9210
- renesas_sdhi: Whitelist R8A77990 SDHI
- renesas_sdhi: Fixup eMMC HS400 compatibility issues for H3 and M3-W
- rtsx_usb_sdmmc: Re-work card detection/removal support
- rtsx_usb_sdmmc: Re-work runtime PM support
- sdhci: Fix timeout loops for some variant drivers
- sdhci: Improve support for error handling due to failing commands
- sdhci-acpi/pci: Disable LED control for Intel BYT-based controllers
- sdhci_am654: Add new SDHCI variant driver to support TI's AM654 SOCs
- sdhci-of-esdhc: Add support for eMMC HS400 mode
- sdhci-omap: Fixup reset support
- sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures
- sdhci-msm: Fixup sporadic write transfers issues for SDR104/HS200
- sdhci-msm: Fixup dynamical clock gating issues
- various: Complete converting all hosts into using slot GPIO descriptors
Other:
- Move GPIO mmc platform data for mips/sh/arm to GPIO descriptors
- Add new Alcor Micro cardreader PCI driver
- Support runtime power management for memstick rtsx_usb_ms driver
- Use USB remote wakeups for card detection for rtsx_usb misc driver"
* tag 'mmc-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (99 commits)
mmc: mediatek: Add MMC_CAP_SDIO_IRQ support
mmc: renesas_sdhi_internal_dmac: Whitelist r8a774c0
dt-bindings: mmc: renesas_sdhi: Add r8a774c0 support
mmc: core: Cleanup BKOPS support
mmc: core: Drop redundant check in mmc_send_hpi_cmd()
mmc: sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures (i929)
dt-bindings: sdhci-omap: Add note for cpu_thermal
mmc: sdhci-acpi: Disable LED control for Intel BYT-based controllers
mmc: sdhci-pci: Disable LED control for Intel BYT-based controllers
mmc: sdhci: Add quirk to disable LED control
mmc: mmci: add variant property to set command stop bit
misc: alcor_pci: fix spelling mistake "invailid" -> "invalid"
mmc: meson-gx: add signal resampling
mmc: meson-gx: align default phase on soc vendor tree
mmc: meson-gx: remove useless lock
mmc: meson-gx: make sure the descriptor is stopped on errors
mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver
dt-bindings: mmc: sdhci-of-arasan: Add deprecated message for AM65
dt-bindings: mmc: sdhci-am654: Document bindings for the host controllers on TI's AM654 SOCs
mmc: sdhci-msm: avoid unused function warning
...
Switch the SPI MMC driver to use GPIO descriptors internally
and just look those up using the standard slot GPIO
functions mmc_gpiod_request_cd() and mmc_gpiod_request_ro().
Make sure to request index 0 and 1 in accordance with the
SPI MMC DT binding, and add the same GPIOs in machine
descriptor tables on all boards that use SPI MMC in
board files.
The lines are flagged as GPIO_ACTIVE_[LOW|HIGH] as that is
what they are, and since we can now rely on the descriptors
to have the right polarity, we set the
"override_active_level" to false in mmc_gpiod_request_cd()
and mmc_gpiod_request_ro().
Cc: Hartley Sweeten <hsweeten@visionengravers.com> # Vision EP9307
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add flags for Octal mode I/O data transfer
Required for the SPI controller which can do the data transfer (TX/RX)
on 8 data lines e.g. NXP FlexSPI controller.
SPI_TX_OCTAL: transmit with 8 wires
SPI_RX_OCTAL: receive with 8 wires
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Most modern SPI controllers can directly map a SPI memory (or a portion
of the SPI memory) in the CPU address space. Most of the time this
brings significant performance improvements as it automates the whole
process of sending SPI memory operations every time a new region is
accessed.
This new API allows SPI memory drivers to create direct mappings and
then use them to access the memory instead of using spi_mem_exec_op().
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
When defining spi_mem_op templates we don't necessarily know the size
that will be passed when the template is actually used, and basing the
supports_op() check on op->data.nbytes to know whether there will be
data transferred for a specific operation is this not possible.
Add SPI_MEM_NO_DATA to the spi_mem_data_dir enum so that we can base
our checks on op->data.dir instead of op->data.nbytes.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Tested on an OLPC XO-1.75 machine, where the Embedded Controller happens
to be a SPI master.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Mark Brown <broonie@kernel.org>
Some devices such as the TPO TPG110 display panel require
a "high-impedance turn-around", in effect a clock cycle after
switching the line from output to input mode.
Support this in the GPIO driver to begin with. Other driver
may implement it if they can, it is unclear if this can
be achieved with anything else than GPIO bit-banging.
Cc: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This attribute works the same was as the identically named attribute
for PCI, AMBA, and platform devices. For reference, see:
commit 3cf3857134 ("ARM: 8256/1: driver coamba: add device binding
path 'driver_override'")
commit 3d713e0e38 ("driver core: platform: add device binding path
'driver_override'")
commit 782a985d7a ("PCI: Introduce new device binding path using
pci_dev.driver_override")
If the name of a driver is written to this attribute, then the device
will bind to the named driver and only the named driver.
The device will bind to the driver even if the driver does not list the
device in its id table. This behavior is different than the driver's
bind attribute, which only allows binding to devices that are listed as
supported by the driver.
It can be used to bind a generic driver, like spidev, to a device.
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Reviewed-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
Mark writes:
"spi: Fixes for v4.19
Quite a few fixes for the Renesas drivers in here, plus a fix for the
Tegra driver and some documentation fixes for the recently added
spi-mem code. The Tegra fix is relatively large but fairly
straightforward and mechanical, it runs on probe so it's been
reasonably well covered in -next testing."
* tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header
spi: spi-mem: Add missing description for data.nbytes field
spi: rspi: Fix interrupted DMA transfers
spi: rspi: Fix invalid SPI use during system suspend
spi: sh-msiof: Fix handling of write value for SISTR register
spi: sh-msiof: Fix invalid SPI use during system suspend
spi: gpio: Fix copy-and-paste error
spi: tegra20-slink: explicitly enable/disable clock
The of_find_spi_device_by_node() helper function is useful for other
modules too. Export the funciton as GPL like all other spi helper
functions and make it available if CONFIG_OF is enabled, because it isn't
related to the CONFIG_OF_DYNAMIC context. Finally add a stub if
CONFIG_OF isn't enabled, so others must not care about it.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Use the appropriate SPDX license identifier and drop the previous
license text.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
We'd better have that documented in the kerneldoc header, so that it's
exposed to the doc generated by Sphinx.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a description for spi_mem_op.data.nbytes to the kerneldoc header.
Fixes: c36ff266dc ("spi: Extend the core to ease integration of SPI memory controllers")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This adds a new SPI mode flag, SPI_CS_WORD, that is used to indicate
that a SPI device requires the chip select to be toggled after each
word that is transferred.
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
For some SPI controllers, after each word size (specified by bits_per_word)
transimission, the hardware need some delay to make sure the slave has enough
time to receive the whole data.
So introducing one new 'word_delay' field of struct spi_tansfer for slave
devices to set this inter word delay time.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Pull spi updates from Mark Brown:
"Quite an active release for the SPI subsystem, lots of small updates
and fixes scattered about with highlights including:
- 3-wire support in the GPIO driver.
- support for setting a custom memory name in the memory mapped flash
drivers.
- support for extended mode in the Freescale DSPI controller.
- support for the non-standard integration with the Microsemi Ocelot
platform in the DesignWare driver.
- new driver for the SocioNext UniPhier"
* tag 'spi-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (47 commits)
spi: davinci: fix a NULL pointer dereference
spi: spi-mem: Constify spi_mem->name
mtd: m25p80: Call spi_mem_get_name() to let controller set a custom name
spi: spi-mem: Extend the SPI mem interface to set a custom memory name
spi: spi-mem: Fix a typo in the documentation of struct spi_mem
spi: uniphier: remove unnecessary include headers
spi: spi-gpio: add SPI_3WIRE support
spi: add flags parameter to txrx_word function pointers
spi: add SPI controller driver for UniPhier SoC
spi: add DT bindings for UniPhier SPI controller
spi: dw: document Microsemi integration
spi: img-spfi: Set device select bits for SPFI port state
spi: omap2-mcspi: remove several redundant variables
spi: dw-mmio: add MSCC Ocelot support
spi: dw: export dw_spi_set_cs
spi: spi-fsl-espi: Log fifo counters on error
spi: imx: Use the longuest possible burst size when in dynamic_burst
spi: imx: remove unnecessary check in spi_imx_can_dma
spi: imx: Use correct number of bytes per words
spi: imx: Use dynamic bursts only when bits_per_word is 8, 16 or 32
...
There is no reason to make spi_mem->name modifiable. Moreover,
spi_mem_ops->get_name() returns a const char *, which generates a gcc
warning when assigning the value returned by spi_mem_ops->get_name()
to spi_mem->name.
Fixes: 5d27a9c8ea ("spi: spi-mem: Extend the SPI mem interface to set a custom memory name")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
When porting (Q)SPI controller drivers from the MTD layer to the SPI
layer, the naming scheme for the memory devices changes. To be able
to keep compatibility with the old drivers naming scheme, a name
field is added to struct spi_mem and a hook is added to let controller
drivers set a custom name for the memory device.
Example for the FSL QSPI driver:
Name with the old driver: 21e0000.qspi,
or with multiple devices: 21e0000.qspi-0, 21e0000.qspi-1, ...
Name with the new driver without spi_mem_get_name: spi4.0
Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
