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path: root/drivers/spi/atmel_spi.c
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2018-11-27spi: Remove unused spi_initJagan Teki
Remove spi_init definition which never used on respective code since from many years. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTRTom Rini
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-07Revert "spi: atmel: Drop non-dm code"Tom Rini
As we aren't quite able to convert some platforms with a very small size limit in SPL yet, we need to revert this for now. This reverts commit 7b0947787358c6b277431d6b76ce043d8bec641d. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-07Revert "spi: atmel: Drop atmel_spi.h"Tom Rini
As we aren't quite able to convert some platforms with a very small size limit in SPL yet, we need to revert this for now. This reverts commit 37434db29be495ef41f204a97b8bf13b1418f97d. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-06spi: atmel: Drop atmel_spi.hJagan Teki
atmel_spi.h has register offsets, and atmel_spi_slave structure, move it into .c file for better readability and drop atmel_spi.h Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Wenyou Yang <wenyouya@gmail.com>
2018-04-06spi: atmel: Drop non-dm codeJagan Teki
All board configs are now enabled DM_SPI for SPL and U-Boot proper, so now its time to drop non-dm code. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Wenyou Yang <wenyouya@gmail.com>
2018-04-06spi: atmel: Add ifdef for DM_GPIO codeJagan Teki
Few boards are configuring gpio directly from board instead using drivers/gpio so add ifdef for DM_GPIO to compatible for both the cases. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Wenyou Yang <wenyouya@gmail.com>
2018-01-24wait_bit: use wait_for_bit_le32 and remove wait_for_bitÁlvaro Fernández Rojas
wait_for_bit callers use the 32 bit LE version Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
2017-10-04treewide: replace with error() with pr_err()Masahiro Yamada
U-Boot widely uses error() as a bit noisier variant of printf(). This macro causes name conflict with the following line in include/linux/compiler-gcc.h: # define __compiletime_error(message) __attribute__((error(message))) This prevents us from using __compiletime_error(), and makes it difficult to fully sync BUILD_BUG macros with Linux. (Notice Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().) Let's convert error() into now treewide-available pr_err(). Done with the help of Coccinelle, excluing tools/ directory. The semantic patch I used is as follows: // <smpl> @@@@ -error +pr_err (...) // </smpl> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: Re-run Coccinelle] Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-01dm: Rename dev_addr..() functionsSimon Glass
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-03spi: atmel: check GPIO validity before using cs_gpiosWenyou Yang
Before using the cs_gpio, check if the GPIO is valid or not. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-10-28dm: at91: Add driver model support for the spi driverWenyou Yang
Add driver model support while retaining the existing legacy code. This allows the driver to support boards that have converted to driver model as well as those that have not. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com>
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>
2013-05-12spi: atmel_spi: using ip version to check whether has wdrbtBo Shen
Using IP version to check whether it has wdrbt bit in mode register Tested in at91sam9x5ek and at91sam9n12ek. Signed-off-by: Bo Shen <voice.shen@atmel.com> [fix warning about incompatible parameter] Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-03-19spi: Use spi_alloc_slave() in each SPI driverSimon Glass
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>
2012-12-09spi: atmel: sam9m10g45 also support WDRBT bitBo Shen
The at91sam9m10g45 also support WDRBT bit, add support for it Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2012-09-01spi: atmel: add WDRBT bit to avoid receive overrunBo Shen
The atmel at91sam9x5 series spi has feature to avoid receive overren Using the patch to enable it Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2011-11-16drivers/spi/atmel_spi.c: Fix GCC 4.6 warningAnatolij Gustschin
Fix: atmel_spi.c: In function 'spi_xfer': atmel_spi.c:139:7: warning: variable 'ret' set but not used [-Wunused-but-set-variable] Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-05-18ATMEL: fix related common atmel driver filesReinhard Meyer
Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-09-03AT91/AVR32: atmel_spi.c: flush RDR before next SPI transactionReinhard Meyer
Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2008-06-03atmel_spi: Driver for the Atmel SPI controllerHans-Christian Egtvedt
This adds a driver for the SPI controller found on most AT91 and AVR32 chips, implementing the new SPI API. Changed in v4: - Update to new API - Handle zero-length transfers appropriately. The user may send a zero-length SPI transfer with SPI_XFER_END set in order to deactivate the chip select after a series of transfers with chip select active. This is useful e.g. when polling the status register of DataFlash. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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