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2020-06-26mtd: rawnand: trivial spellingKieran Bingham2-2/+2
The word 'descriptor' is misspelled throughout the tree. Fix it up accordingly: decriptors -> descriptors Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200609124610.3445662-5-kieran.bingham+renesas@ideasonboard.com
2020-06-26mtd: rawnand: gpio: Get rid of the legacy interface implementationBoris Brezillon1-35/+0
Now that exec_op() is implemented, we can get rid of the legacy interface implementation. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603150746.1423257-4-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: gpio: Implement exec_op()Boris Brezillon1-3/+101
Implement exec_op() so we can get rid of the legacy interface implementation. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603150746.1423257-3-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: gpio: Inherit from nand_controllerBoris Brezillon1-0/+3
Inherit from nand_controller so we don't rely on the nand_chip.legacy.dummy_controller field. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603150746.1423257-2-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Get rid of the legacy interface implementationBoris Brezillon1-133/+0
Now that the driver implements exec_op(), we can get rid of the legacy interface implementation. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-10-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Implement exec_op()Boris Brezillon1-0/+86
Implement exec_op() so we can get rid of the legacy interface implementation. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-9-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Inherit from nand_controllerBoris Brezillon1-0/+3
Explicitly inherit from nand_controller instead of relying on the nand_chip.legacy.dummy_controller field. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-8-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Use gpio descriptorsBoris Brezillon1-34/+10
The integer-based GPIO ids are now deprecated in favor of the GPIO desc API. The PPC platforms have already been converted to GPIOLIB, so let's use gpio descs in the NAND driver too. While at it, we use devm_gpiod_get_index_optional() so we can get rid of the manual gpio desc release done in the init error path and in the remove function. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-7-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Use platform_get_resource() + devm_ioremap_resource()Boris Brezillon1-16/+7
Replace the of_address_to_resource() + devm_ioremap() calls by platform_get_resource() + devm_ioremap_resource() ones which allows us to get rid of one error message since devm_ioremap_resource() already takes care of that. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-6-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Use devm_kasprintf() to allocate the MTD nameBoris Brezillon1-5/+3
This simplifies the init() error path and the remove() handler. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-5-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Allocate the fsl_upm_nand object using devm_kzalloc()Boris Brezillon1-12/+6
This simplifies the init error path and remove function. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-4-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Get rid of the unused fsl_upm_nand.parts fieldBoris Brezillon1-1/+0
fsl_upm_nand.parts is unused, let's get rid of it. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-3-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: fsl_upm: Remove unused mtd varBoris Brezillon1-1/+0
The mtd var in fun_wait_rnb() is now unused, let's get rid of it and fix the warning resulting from this unused var. Fixes: 50a487e7719c ("mtd: rawnand: Pass a nand_chip object to chip->dev_ready()") Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200603134922.1352340-2-boris.brezillon@collabora.com
2020-06-26mtd: rawnand: Allocate the interface configurations dynamicallyMiquel Raynal3-32/+59
Instead of manipulating the statically allocated structure and copy timings around, allocate one at identification time and save it in the nand_chip structure once it has been initialized. All NAND chips using the same interface configuration during reset and startup, we define a helper to retrieve a single reset interface configuration object, shared across all NAND chips. We use a second pointer to always have a reference on the currently applied interface configuration, which may either point to the "best interface configuration" or to the "default reset interface configuration". Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-29-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Get rid of the default ONFI timing modeMiquel Raynal1-15/+4
The ->choose_interface() hook is here for manufacturer drivers to provide a better timing interface than the default one, this field is not needed anymore. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-28-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: toshiba: Choose the interface configuration for TH58NVG2S3HBAI4Rickard x Andersson2-0/+41
The Kioxia/Toshiba TH58NVG2S3HBAI4 NAND memory is not ONFI compliant. The timings of the NAND chip memory are quite close to ONFI mode 4 but is breaking that spec. By providing our own set of timings, erase block read speed is increased from 6910 kiB/s to 13490 kiB/s and erase block write speed is increased from 3350 kiB/s to 4410 kiB/s. Tested on IMX6SX which has a NAND controller supporting EDO mode. Signed-off-by: Rickard x Andersson <rickaran@axis.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-27-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: hynix: Implement ->choose_interface_config() for H27UCG8T2ATR-BCMiquel Raynal2-1/+15
This chip supports ONFI SDR timing mode 4, implement the new hook to advertize it. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-26-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: toshiba: Implement ->choose_interface_config() for TC58NVG0S3EMiquel Raynal2-2/+21
This chip supports ONFI SDR timing mode 2, implement the new hook to advertize it. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-25-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: toshiba: Implement ->choose_interface_config() for TC58TEG5DCLTA00Miquel Raynal1-1/+11
Implement this hook for the tc58teg5dclta00 NAND chip and stop setting ->default_timing_mode. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-24-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Add the ->choose_interface_config() hookMiquel Raynal1-6/+11
This hook can be overloaded by NAND manufacturer drivers to propose alternative timings when not following the main standards. In this case, the manufacturer drivers is responsible for choosing the best interface configuration that fits both the controller and chip capabilities. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-23-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Introduce nand_choose_best_sdr_timings()Miquel Raynal2-36/+61
Extract the logic out of nand_choose_interface_config() to create a public helper that can be reused by manufacturer drivers. Add the possibility to provide a specific set of timings. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-22-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: Make onfi_fill_interface_config() a void helperMiquel Raynal3-18/+14
Warn the user if the parameters are wrong but basically it would mean there is a serious issue in the NAND core. So no need to ever check its output, let's make this helper return void. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-21-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: s/data_interface/interface_config/Miquel Raynal21-122/+123
The name/suffix data_interface is a bit misleading in that the field or functions actually represent a configuration that can be applied by the controller/chip. Let's rename all fields/functions/hooks that are worth renaming. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2020-06-26mtd: rawnand: Hide the chip->data_interface indirectionMiquel Raynal7-28/+34
As a preparation for allocating the data interface structure dynamically (and rename it), let's avoid accessing chip->data_interface directly. Instead, we introduce a helper, nand_get_interface_config(), and use it to retrieve the current data interface configuration out of a nand_chip object. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-19-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: Use default values for tPROG_max and tBERS_maxMiquel Raynal1-12/+19
The ONFI parameter page of a chip might define more fine grained tPROG_max and tBERS_max. When we do not have this information, we default to the highest possible values (they are maxima anyway). There is no point setting these fields at runtime, so explicitly move these defaults to the main ONFI SDR timings structure. This way, we will also be able to return a pointer to mode 0 directly when we will create a default reset configuration. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-18-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: Avoid redefining tR_max and tCCS_minMiquel Raynal1-3/+0
These two values are already hardcoded in the default ONFI timing structure, no need to redefine them here. Plus, we want to be able to reference timing mode 0 easily and reliably, without extra computation, so we get rid of the extra assignations. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-17-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: Add a helper to find the closest ONFI modeMiquel Raynal2-0/+49
Vendors are allowed to provide their own set of timings. In this case, we provide a way to derive the "closest" timing mode so that, if the NAND controller does not support tweaking these parameters, it will be able to configure itself anyway. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-16-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: onfi_fill_data_interface timing mode is unsignedMiquel Raynal2-3/+3
Turn this argument into an unsigned int, as it cannot be signed. This also spares a check. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-15-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: Provide onfi_fill_data_interface() with a data interfaceMiquel Raynal3-4/+7
Right now the core uses onfi_fill_data_interface() to initialize the nand_data_interface object embedded in nand_chip, but we are about to allocate this object dynamically and let manufacturer drivers provide their own interface config. Let's patch the onfi_fill_data_interface() so it can initialize an interface config that's not the one currently attached to the nand_chip. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-14-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: timings: Update onfi_fill_data_interface() kernel docMiquel Raynal1-3/+4
Describe all parameters and drop the legacy [NAND Interface] prefix. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-13-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Rename nand_init_data_interface()Miquel Raynal1-4/+4
This name is a bit misleading, what we do in this helper is trying to find the best SDR timings supported by the controller and the chip. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-12-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Fix nand_setup_data_interface() descriptionMiquel Raynal1-5/+2
This is a copy/paste error and belongs to nand_init_data_interface() description. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-11-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Rename nand_has_setup_data_iface()Miquel Raynal3-5/+5
This is really a NAND controller hook so call it nand_controller_can_setup_data_iface(), which makes much more sense. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-10-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Use the data interface mode entry when relevantMiquel Raynal1-5/+4
The data interface setup does not care about the default timing mode but cares about the actual timing mode at the time of the call of this helper. Use this entry instead and let chip->default_timing_mode only be used at initialization time. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-9-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Compare the actual timing valuesMiquel Raynal1-1/+2
Avoid relying just on the default timing mode to discriminate if the data interface must be restored. This field should only be used at initialization time by legacy chips statically defined. Do a memcmp() instead. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-8-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Rename the manufacturer structureMiquel Raynal3-18/+18
It is currently called nand_manufacturer but could actually be called nand_manufacturer_desc, like its instances, so that the former name is left unused for now. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-5-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: Create a nand_chip operations structureMiquel Raynal4-17/+17
And move nand_chip hooks there. While moving entries from one structure to the other, adapt the documentation style. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529111322.7184-4-miquel.raynal@bootlin.com
2020-06-26mtd: nand: Drop useless 'depends on' in KconfigMiquel Raynal2-2/+0
Both OneNAND and raw NAND bits can't be compiled if MTD is disabled because of the if/endif logic in drivers/mtd/Kconfig. There is no need for an extra "depends on MTD" in their respective Kconfig files. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529002517.3546-12-miquel.raynal@bootlin.com
2020-06-26mtd: nand: Add an extra level in the Kconfig hierarchyMiquel Raynal1-0/+5
Use an extra level in Kconfig for all NAND related entries. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200529002517.3546-11-miquel.raynal@bootlin.com
2020-06-26mtd: rawnand: tango: Convert the driver to exec_op()Boris Brezillon1-46/+79
Let's convert the driver to exec_op() to have one less driver relying on the legacy interface. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200518170912.328988-1-boris.brezillon@collabora.com
2020-06-19spi: Move cadence-quadspi driver to drivers/spi/Ramuthevar Vadivel Murugan3-1431/+0
Now that cadence-quadspi has been converted to use spi-mem framework, move it under drivers/spi/ Update license header to match SPI subsystem style Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-9-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: Convert cadence-quadspi to use spi-mem frameworkRamuthevar Vadivel Murugan1-285/+191
Move cadence-quadspi driver to use spi-mem framework. This is required to make the driver support for SPI NAND flashes in future. Driver is feature compliant with existing SPI NOR version. Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-8-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Drop redundant WREN in erase pathVignesh Raghavendra1-5/+0
Drop redundant WREN command in cqspi_erase() as SPI NOR core takes care of sending WREN command before sending erase command. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-7-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Handle probe deferral while requesting DMA channelVignesh Raghavendra1-5/+13
dma_request_chan_by_mask() can throw EPROBE_DEFER if DMA provider is not yet probed. Currently driver just falls back to using PIO mode (which is less efficient) in this case. Instead return probe deferral error as is so that driver will be re probed once DMA provider is available. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-6-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Fix error path on failure to acquire reset linesVignesh Raghavendra1-4/+4
Make sure to undo the prior changes done by the driver when exiting due to failure to acquire reset lines. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-5-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Don't initialize rx_dma_complete on failureVignesh Raghavendra1-0/+1
If driver fails to acquire DMA channel then don't initialize rx_dma_complete struct as it won't be used. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-4-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Provide a way to disable DAC modeVignesh Raghavendra1-1/+4
Currently direct access mode is used on platforms that have AHB window (memory mapped window) larger than flash size. This feature is limited to TI platforms as non TI platforms have < 1MB of AHB window. Therefore introduce a driver quirk to disable DAC mode and set it for non TI compatibles. This is in preparation to move to spi-mem framework where flash geometry cannot be known. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-3-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Make driver independent of flash geometryVignesh Raghavendra1-35/+1
Drop configuration of Flash size, erase size and page size configuration. Flash size is needed only if using AHB decoder (BIT 23 of CONFIG_REG) which is not used by the driver. Erase size and page size are needed if IP is configured to send WREN automatically. But since SPI NOR layer takes care of sending WREN, there is no need to configure these fields either. Therefore drop these in preparation to move the driver to spi-mem framework where flash geometry is not visible to controller driver. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-2-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-15mtd: set master partition panic write flagKamal Dasu1-2/+2
Check and set master panic write flag so that low level drivers can use it to take required action to ensure oops data gets written to assigned mtdoops device partition. Fixes: 9f897bfdd89f ("mtd: Add flag to indicate panic_write") Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200615155134.32007-1-kdasu.kdev@gmail.com
2020-06-15nandsim: Fix return code testing of ns_find_operation()Richard Weinberger1-1/+1
ns_find_operation() returns 0 on success. Fixes: 052a7a5374bc ("mtd: rawnand: nandsim: Clean error handling") Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200615113404.25447-1-richard@nod.at
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