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path: root/drivers/spi/spi-rb4xx.c
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2020-05-22spi: rb4xx: update driver to be device tree awareChristopher Hill
This patch updates the spi driver spi-rb4xx.c to be device tree aware Signed-off-by: Christopher Hill <ch6574@gmail.com> Link: https://lore.kernel.org/r/20200521183631.37806-2-ch6574@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-22spi: rb4xx: null pointer bug fixChristopher Hill
This patch fixes a null pointer bug in the spi driver spi-rb4xx.c by moving the private data initialization to earlier in probe Signed-off-by: Christopher Hill <ch6574@gmail.com> Link: https://lore.kernel.org/r/20200521183631.37806-1-ch6574@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-09-04spi: rb4xx: use devm_platform_ioremap_resource() to simplify codeYueHaibing
Use devm_platform_ioremap_resource() to simplify the code a bit. This is detected by coccinelle. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20190904135918.25352-25-yuehaibing@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-10spi: rb4xx: Use SPI_BPW_MASK to set bits_per_word_maskAxel Lin
Improve readability a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-01spi: rb4xx: Fix checking return value of devm_ioremap_resource()Axel Lin
devm_ioremap_resource() returns ERR_PTR on failure. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-20spi: rb4xx: Fix set_cs logic.Bert Vermeulen
As it turns out, the set_cs() enable parameter refers to the logic level on the CS pin, not the state of chip selection. This broke functionality of the LEDs behind the CPLD, or at least delayed the commands until another one came in to toggle CS. Signed-off-by: Bert Vermeulen <bert@biot.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-18spi: Add SPI driver for Mikrotik RB4xx series boardsBert Vermeulen
This driver mediates access between the connected CPLD and other devices on the bus. The m25p80-compatible boot flash and (some models) MMC use regular SPI, bitbanged as required by the SoC. However the SPI-connected CPLD has a two-wire mode, in which two bits are transferred per SPI clock cycle. The second bit is transmitted with the SoC's CS2 pin. Signed-off-by: Bert Vermeulen <bert@biot.com> Signed-off-by: Mark Brown <broonie@kernel.org>