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path: root/drivers/spi/soft_spi.c
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* dm: spi: Move slave details to child platdataSimon Glass2015-01-29-9/+0
| | | | | | | | | | | | | | | | At present we go through various contortions to store the SPI slave's chip select in its private data. This only exists when the slave is active so must be set up when it is probed. Until the device is probed we don't actually know what chip select it will appear on. However, now that we can support per-child platform data, we can use that instead. This allows us to set up the chip select when the child is bound, and avoid the messy contortions. Unfortunately this is a fairly large change and it seems to be difficult to break it down further. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: spi: Move the per-child data size to the uclassSimon Glass2015-01-29-1/+0
| | | | | | | | This is common to all SPI drivers and specifies a structure used by the uclass. It makes more sense to define it in the uclass. Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: spi: Remove use of fdtdec GPIO supportSimon Glass2015-01-29-34/+28
| | | | | | These functions are going away, so use the new uclass support instead. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: spi: Add soft_spi implementationSimon Glass2014-10-22-0/+252
| | | | | | | | Add a new implementation of soft_spi that uses device tree to specify the GPIOs. This will replace soft_spi_legacy for boards which use driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Rename soft_spi.c to soft_spi_legacy.cSimon Glass2014-10-22-181/+0
| | | | | | | | Reserve the 'normal' name for use by driver model, and rename the old driver so that it is clear that it is for 'legacy' drivers only. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* spi: soft_spi: Support NULL din/dout buffersAndrew Ruder2014-06-08-6/+12
| | | | | | | | | | | | | | | This mirrors the conventions used in other SPI drivers (kirkwood, davinci, atmel, et al) where the din/dout buffer can be NULL when the received/transmitted data isn't important. This reduces the need for allocating additional buffers when write-only/read-only functionality is needed. In the din == NULL case, the received data is simply not stored. In the dout == NULL case, zeroes are transmitted. Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* spi: Use spi_alloc_slave() in each SPI driverSimon Glass2013-03-19-3/+1
| | | | | | | | Rather than each driver having its own way to allocate a SPI slave, use the new allocation function everywhere. This will make it easier to extend the interface without breaking drivers. Signed-off-by: Simon Glass <sjg@chromium.org>
* rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD2008-10-18-5/+5
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* soft_spi: move to drivers/spiJean-Christophe PLAGNIOL-VILLARD2008-08-29-0/+193
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>