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path: root/drivers/spi/atmel-quadspi.c
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2019-02-06spi: atmel-quadspi: switch to SPDX license identifiersTudor Ambarus
Adopt the SPDX license identifiers to ease license compliance management. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06spi: atmel-quadspi: return appropriate error codeTudor Ambarus
Return -ENOTSUPP when atmel_qspi_find_mode() fails. Propagate the error in atmel_qspi_exec_op(). Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06spi: atmel-quadspi: remove unnecessary castTudor Ambarus
The cast is done implicitly. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06spi: atmel-quadspi: fix naming schemeTudor Ambarus
Let general names to core drivers. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06spi: atmel-quadspi: drop wrappers for iomem accessesTudor Ambarus
The wrappers hid that the accesses are relaxed. Drop them. Suggested-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06spi: atmel-quadspi: order header files inclusion alphabeticallyTudor Ambarus
Cosmetic change, no functional change. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06spi: atmel-quadspi: cache MR value to avoid a write accessTudor Ambarus
Set the controller by default in Serial Memory Mode (SMM) at probe. Cache Mode Register (MR) value to avoid write access when setting the controller in serial memory mode at exec_op(). Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-07spi: Add QuadSPI driver for Atmel SAMA5D2Piotr Bugalski
Kernel contains QSPI driver strongly tied to MTD and nor-flash memory. New spi-mem interface allows usage also other memory types, especially much larger NAND with SPI interface. This driver works as SPI controller and is not related to MTD, however can work with NAND-flash or other peripherals using spi-mem interface. Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Piotr Bugalski <bugalski.piotr@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>