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path: root/drivers/i2c/stm32f7_i2c.c
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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>
2018-03-19stm32mp: stm32f7_i2c: use calloc instead of kmallocPatrick Delaunay
Kmalloc is using memalign allocation function. It is not necessary to align this structure so to save bytes, we move to calloc. And kmalloc function can't be used in SPL early stage (in board_init_f()) Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2017-10-17i2c: stm32f7_i2c: fix usage of useless local variablePatrice Chotard
Remove useless local variable "s" and use directly function's parameter "output" Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-10-17i2c: stm32f7_i2c: fix data abortChristophe Kerello
As "v" is a local variable in stm32_i2c_choose_solution() "v" has to be copied into "s" to avoid data abort in stm32_i2c_compute_timing(). Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.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>
2017-08-23i2c: add i2c driver for stm32Patrice Chotard
Add i2c driver which can be used on both STM32F7 and STM32H7. This I2C block supports the following features: _ Slave and master modes _ Multimaster capability _ Standard-mode (up to 100 kHz) _ Fast-mode (up to 400 kHz) _ Fast-mode Plus (up to 1 MHz) _ 7-bit and 10-bit addressing mode _ Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask) _ All 7-bit addresses acknowledge mode _ General call _ Programmable setup and hold times _ Easy to use event management _ Optional clock stretching _ Software reset Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>