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path: root/drivers/i2c/busses/i2c-xgene-slimpro.c
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2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13Thomas 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 as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details [based] [from] [clk] [highbank] [c] you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 355 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01i2c: xgene-slimpro: Support v2Hoan Tran
This patch supports xgene-slimpro-i2c v2 which uses the non-cachable memory as the PCC shared memory. Signed-off-by: Hoan Tran <hotran@apm.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-18i2c: xgene-slimpro: include linux/io.h for memremapArnd Bergmann
The newly added support for the pcc mailbox fails to build in some configurations: drivers/i2c/busses/i2c-xgene-slimpro.c: In function 'xgene_slimpro_i2c_probe': drivers/i2c/busses/i2c-xgene-slimpro.c:516:25: error: implicit declaration of function 'memremap'; did you mean 'memcmp'? [-Werror=implicit-function-declaration] drivers/i2c/busses/i2c-xgene-slimpro.c:518:13: error: 'MEMREMAP_WB' undeclared (first use in this function) drivers/i2c/busses/i2c-xgene-slimpro.c:518:13: note: each undeclared identifier is reported only once for each function it appears in This includes the missing header file. Fixes: df5da47fe722 ("i2c: xgene-slimpro: Add ACPI support by using PCC mailbox") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-02i2c: xgene-slimpro: Add ACPI support by using PCC mailboxHoan Tran
This patch adds ACPI support by using PCC mailbox communication interface. Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-02i2c: xgene-slimpro: Use a single function to send command messageHoan Tran
This patch refactors the code to use a single message function to send command message. Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-05-17i2c: xgene: Set ACPI_COMPANION_I2CTin Huynh
With ACPI, i2c-core requires ACPI companion to be set in order for it to create slave device. This patch sets the ACPI companion accordingly. Signed-off-by: Tin Huynh <tnhuynh@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-02-09i2c: busses: constify i2c_algorithm structuresBhumika Goyal
Declare i2c_algorithm structures as const as they are only stored in the algo field of an i2c_adapter structure. This field is of type const, so i2c_algorithm structures having this property can be made const too. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> for Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-12-17i2c: xgene: Fix missing code of DTB supportTin Huynh
In DTB case, i2c-core doesn't create slave device which is installed on i2c-xgene bus because of missing code in this driver. This patch fixes this issue. Signed-off-by: Tin Huynh <tnhuynh@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-10-25i2c: xgene: Avoid dma_buffer overrunHoan Tran
SMBus block command uses the first byte of buffer for the data length. The dma_buffer should be increased by 1 to avoid the overrun issue. Reported-by: Phil Endecott <phil_gjouf_endecott@chezphil.org> Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
2016-08-22i2c: don't print error when adding adapter failsWolfram Sang
The core will do this for us now. Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Acked-by: Peter Korsgaard <peter@korsgaard.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Ray Jui <ray.jui@broadcom.com> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-08-24i2c: xgene-slimpro: dma_mapping_error() doesn't return an error codeDan Carpenter
The dma_mapping_error() function returns true if there is an error, it doesn't return an error code. We should return -ENOMEM. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
2015-07-09i2c: xgene-slimpro: Fix missing mbox_free_channel call in probe error pathAxel Lin
Free requested mailbox channel before return error. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-06-10i2c: busses: xgene-slimpro: fix incorrect __init declation for probeFeng Kan
Fix section mismatch error during kernel build for xgene_slimpro_i2c_probe function. It was incorrectly defined with __init declaration. Signed-off-by: Feng Kan <fkan@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-05-12i2c: add SLIMpro I2C device driver on APM X-Gene platformFeng Kan
Add SLIMpro I2C device driver on APM X-Gene platform. This I2C device driver use the SLIMpro Mailbox driver to tunnel message to the SLIMpro coprocessor to do the work of accessing I2C components. Signed-off-by: Feng Kan <fkan@apm.com> Signed-off-by: Hieu Le <hnle@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>