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path: root/drivers/spi/spi.c
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2018-01-24spi: Remove obsolete spi_base_setup_slave_fdtMario Six
0efc024 ("spi_flash: Add spi_flash_probe_fdt() to locate SPI by FDT node") added a helper function spi_base_setup_slave_fdt to to set up a SPI slave from a given FDT blob. The only user was the exynos SPI driver. But commit 73186c9 ("dm: exynos: Convert SPI to driver model") removed the use of this function, hence rendering it obsolete. Remove this function, as well as the CONFIG_OF_SPI option, which guarded only this function. Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com> Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-01-24spi: Fix style violation and improve codeMario Six
This patch fixes a printf specifier style violation, reduces the scope of a variable, and turns a void pointer that is used with pointer arithmetic into a u8 pointer. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Jagan Teki <jagan@openedev.com>
2014-08-06spi: Support half-duplex mode in FDT decodeSimon Glass
This parameter should also be supported. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Ajay Kumar <ajaykumar.rs@samsung.com> Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-12-09spi_flash: Add spi_flash_probe_fdt() to locate SPI by FDT nodeSimon Glass
This allows us to put the SPI flash chip inside the SPI interface node, with U-Boot finding the correct bus and chip select automatically. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-11-12spi: omap3: add support for more word lengthsNikita Kiryanov
Current implementation only supports 8 bit word lengths, even though omap3 can handle anything between 4 and 32. Update the spi interface to support changing the SPI word length, and implement it in omap3_spi driver to support the full range of possible word lengths. This implementation is backwards compatible by defaulting to the old behavior of 8 bit word lengths. Also, it required a change to the omap3_spi non static I/O functions, but since they are not used anywhere else, no collateral changes are required. Cc: Tom Rini <trini@ti.com> Cc: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-03-19spi: Add function to allocate a new SPI slaveSimon Glass
At present it is difficult to extend the SPI structure since all drivers allocate it themselves, and few of them zero all fields. Add a new function spi_alloc_slave() which can be used by SPI drivers to perform this allocation, and thus ensure that all drivers can better cope with SPI structure changes. Signed-off-by: Simon Glass <sjg@chromium.org>