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path: root/drivers/i2c/busses/i2c-stm32f4.c
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2020-09-21i2c: stm32: Simplify with dev_err_probe()Krzysztof Kozlowski
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Alain Volmat <alain.volmat@st.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-04-26i2c: stm32: don't print an error on probe deferralEtienne Carriere
Do not print an error trace when deferring probe for some resource. Fix as well the error message in case of tx dma_request_chan failure. Signed-off-by: Etienne Carriere <etienne.carriere@st.com> Signed-off-by: Alain Volmat <alain.volmat@st.com> Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-03-24i2c: drivers: Use generic definitions for bus frequenciesAndy Shevchenko
Since we have generic definitions for bus frequencies, let's use them. Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Robert Richter <rrichter@marvell.com> Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com> Acked-by: Elie Morisse <syniurge@gmail.com> Acked-by: Nehal Shah <nehal-bakulchandra.shah@amd.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Acked-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Baolin Wang <baolin.wang7@gmail.com> Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-02-27i2c-stm32f4: remove redundant initialization of pointer regColin Ian King
The pointer reg is assigned a value that is never read, it is later overwritten with a new value, hence the redundant initialization can be removed. Cleans up clang warning: drivers/i2c/busses/i2c-stm32f4.c:352:16: warning: Value stored to 'reg' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-12-12i2c: stm32: Fix copyrightsBenjamin Gaignard
Uniformize STMicroelectronics copyrights headers and add SPDX identifier. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Acked-by: Alexandre TORGUE <alexandre.torgue@st.com> Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Acked-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14i2c: i2c-stm32f4: use generic definition of speed enumPierre-Yves MORDRET
This patch uses a more generic definition of speed enum for i2c-stm32f4 driver. Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Reviewed-by: Ludovic BARRE <ludovic.barre@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-08-14i2c: stm32f4: explicitly request exclusive reset controlPhilipp Zabel
Commit a53e35db70d1 ("reset: Ensure drivers are explicit when requesting reset lines") started to transition the reset control request API calls to explicitly state whether the driver needs exclusive or shared reset control behavior. Convert all drivers requesting exclusive resets to the explicit API call so the temporary transition helpers can be removed. No functional changes. Cc: Wolfram Sang <wsa@the-dreams.de> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: linux-i2c@vger.kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-08-12i2c: constify internal structuresGustavo A. R. Silva
Check for i2c_algorithm and i2c_adapter_quirks structures that are only stored in the algo and quirks fields of an i2c_adapter structure correspondingly. These fields are declared const, so i2c_algorithm and i2c_adapter_quirks structures that have this property can be declared as const also. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> (for designware) Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-01-25i2c: stm32f4: add driverM'boumba Cedric Madianga
This patch adds support for the STM32F4 I2C controller. Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>