07 Dec, 2017
6 commits
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The .probe_chip function is supposed to probe an i2c device on the bus to
determine whether a device is answering to a particular address.
at91_i2c_probe_chip() did not do anything resembling this and always
returned 0.It looks as though at91_i2c_probe_chip() was intended to be a .probe
function for the controller, as it was copied-and-pasted to become
at91_i2c_probe() in 0bc8f640a4d7ed.Removing the at91_i2c_probe_chip() function makes the higher layer
(i2c_probe_chip()) try a zero-length read transfer to test for the
presence of a device instead, which does work.Signed-off-by: Alan Ott
Acked-by: Wenyou Yang
Reviewed-by: Heiko Schocher -
The driver must wait for TXRDY after each byte is pushed into
the i2c FIFO before pushing the next byte. Previously this was
not done for the first byte, causing a race condition with zeros
sometimes being sent for the next byte (which is typically the
first actual data byte).Signed-off-by: Alan Ott
Reviewed-by: Heiko Schocher -
Add some comment describing the purpose of struct members and
functions.Signed-off-by: Beniamino Galvani
Reviewed-by: Simon Glass
Reviewed-by: Heiko Schocher -
Change meson_i2c_xfer_msg() to return -EREMOTEIO in case of NACK, as
done by other drivers. Also, don't change the return error in
meson_i2c_xfer().Signed-off-by: Beniamino Galvani
Reviewed-by: Simon Glass
Reviewed-by: Heiko Schocher -
The datasheet doesn't specify a suggested timeout and 500ms seems very
long: reduce it to 100ms.Signed-off-by: Beniamino Galvani
Reviewed-by: Simon Glass
Reviewed-by: Heiko Schocher -
Expand the Kconfig description with hardware features.
Signed-off-by: Beniamino Galvani
Reviewed-by: Simon Glass
Reviewed-by: Heiko Schocher
30 Nov, 2017
1 commit
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Add driver for the RCar IIC or DVFS I2C controller. This driver is based
on the SH I2C driver, but supports DM and DT probing as well as modern
I2C framework API.Signed-off-by: Marek Vasut
Cc: Nobuhiro Iwamatsu
27 Nov, 2017
1 commit
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Signed-off-by: Tom Rini
20 Nov, 2017
2 commits
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Add a driver for the I2C controller available on Amlogic Meson SoCs.
Signed-off-by: Beniamino Galvani
Reviewed-by: Neil Armstrong -
Tweak the i2c transfer to work for devices that want to read data
without addressing a register.Signed-off-by: Nandor Han
Signed-off-by: Martyn Welch
Acked-by: Heiko Schocher
Cc: Heiko Schocher
Cc: Stefano Babic
27 Oct, 2017
2 commits
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CONFIG_SYS_I2C_FTI2C010 is not enabled by anyone.
Commit 2852709676c8 ("dm: i2c: Add a note to I2C drivers which need
conversion") prompted to convert this driver to DM before June 2017,
but not converted yet.Signed-off-by: Masahiro Yamada
Acked-by: Heiko Schocher -
This driver was used by Blackfin boards, but Blackfin support is
gone. There is no user of this driver.Signed-off-by: Masahiro Yamada
Acked-by: Heiko Schocher
17 Oct, 2017
3 commits
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Remove useless local variable "s" and use directly
function's parameter "output"Signed-off-by: Patrice Chotard
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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
Reviewed-by: Patrick DELAUNAY
Signed-off-by: Patrice Chotard -
No global pointer is used in this file.
Signed-off-by: Masahiro Yamada
Reviewed-by: Heiko Schocher
15 Oct, 2017
2 commits
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Use dev_dbg() functions. It will be helpful to prefix log messages
with the corresponding device name when the core framework is ready.While I am here, I renamed "dev", which was actually private data,
into "priv" because dev->dev looks confusing.Signed-off-by: Masahiro Yamada
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Use dev_dbg() functions. It will be helpful to prefix log messages
with the corresponding device name when the core framework is ready.While I am here, I renamed "dev", which was actually private data,
into "priv" because dev->dev looks confusing.Signed-off-by: Masahiro Yamada
11 Oct, 2017
1 commit
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Commit 8e6eda7cda6c ("drivers/i2c/muxes/pca954x: Add pca9547 I2C mux
support") introduced a chip_desc for the pca954x devices but failed to
update pca954x_ofdata_to_platdata() to be aware of it. Make
pca954x_ofdata_to_platdata() lookup the chip_desc to validate the device
width.Signed-off-by: Chris Packham
Reviewed-by: Marek Behun
09 Oct, 2017
1 commit
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In U-Boot -ENODEV means that there is no device. When there is a problem
with the device, drivers should return an error like -ENXIO or -EREMOTEIO.
When the device tree properties cannot be read correct , they should
return -EINVAL.Update various GPIO drivers to follow this rule, to help with consistency
for future driver writers.Signed-off-by: Simon Glass
Reported-by: Adam Ford
04 Oct, 2017
1 commit
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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:
//
@@@@
-error
+pr_err
(...)
//Signed-off-by: Masahiro Yamada
Reviewed-by: Simon Glass
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini
01 Oct, 2017
1 commit
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Add compatible to support rk3328 i2c
Signed-off-by: Elaine Zhang
Signed-off-by: Kever Yang
Acked-by: Philipp Tomsich
Reviewed-by: Philipp Tomsich
Acked-by: Heiko Schocher
19 Sep, 2017
1 commit
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Update the Rockchip I2C driver to support livetree.
Signed-off-by: Philipp Tomsich
Reviewed-by: Simon Glass
Acked-by: Philipp Tomsich
Acked-by: Heiko Schocher
13 Sep, 2017
1 commit
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This commit adds support for GPIO reset lines matching the
common linux "reset-gpios" devicetree binding.Signed-off-by: Moritz Fischer
Reviewed-by: Heiko Schocher
Reviewed-by: Simon Glass
05 Sep, 2017
1 commit
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The hw can read up to 32 bytes at a time. If we need
more than one chunk, we have to enter the plain RX mode.Signed-off-by: Wadim Egorov
Acked-by: Philipp Tomsich
02 Sep, 2017
2 commits
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This converts the following to Kconfig:
CONFIG_SYS_I2C_BUS_MAXSigned-off-by: Adam Ford
Reviewed-by: Heiko Schocher
[trini: Fix AM43XX drop AM44XX]
Signed-off-by: Tom Rini -
For consistency with other platforms and in preparation of Kconfig
migration, let's change Several TI platforms that use I2C_BUS_MAX
to CONFIG_SYS_I2C_BUS_MAXSigned-off-by: Adam Ford
23 Aug, 2017
2 commits
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Add an i2c mux driver providing access to i2c bus segments using a
hardware MUX sitting on a master bus and controlled through gpio pins.E.G. something like:
---------- ---------- Bus segment 1 - - - - -
| | SCL/SDA | |-------------- | |
| |------------| |
| | | | Bus segment 2 | |
| Linux | GPIO 1..N | MUX |--------------- Devices
| |------------| | | |
| | | | Bus segment M
| | | |---------------| |
---------- ---------- - - - - -SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M
according to the settings of the GPIO pins 1..N.Note commit log from kernel
commit 92ed1a76("i2c: Add generic I2C multiplexer using GPIO API")Signed-off-by: Peng Fan
Tested-by: Peng Fan (i.MX6QP-Sabreauto)
Cc: Heiko Schocher
Cc: Stefano Babic
Cc: Simon Glass -
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 resetSigned-off-by: Christophe Kerello
Signed-off-by: Patrice Chotard
Reviewed-by: Simon Glass
10 Aug, 2017
2 commits
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Allow sending restart conditions upon direction change as this is
required by some chips.Signed-off-by: Marek Vasut
Cc: Stefan Roese
Cc: Alexey Brodkin
Cc: Heiko Schocher
Reviewed-by: Heiko Schocher -
This converts the following to Kconfig:
CONFIG_SYS_I2C_OMAP24XXSigned-off-by: Adam Ford
Reviewed-by: Heiko Schocher
09 Aug, 2017
2 commits
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The driver is for all boards 24XX and up, so let's eliminate the
extra option called CONFIG_SYS_I2C_OMAP34XX since the driver checks
for CONFIG_OMAP34XX we don't need CONFIG_SYS_I2C_OMAP34XX.Signed-off-by: Adam Ford
Reviewed-by: Heiko Schocher -
Add missing probe function to the device driver to active a device.
Signed-off-by: Wenyou Yang
Reviewed-by: Heiko Schocher
29 Jul, 2017
1 commit
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Update the tegra i2c driver to support a live device tree.
Signed-off-by: Simon Glass
Tested-by: Marcel Ziswiler
Tested-on: Beaver, Jetson-TK1
Tested-by: Stephen Warren
23 Jul, 2017
1 commit
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commit 2eb48ff7a210d ("powerpc, 8260: remove support for mpc8260")
removed support for 8260 CPU.This patch remove some remainders.
Signed-off-by: Christophe Leroy
18 Jul, 2017
1 commit
12 Jul, 2017
2 commits
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Change is consistent with other SOCs and it is in preparation
for adding SOMs. SOC's related files are moved from cpu/ to
mach-imx/.This change is also coherent with the structure in kernel.
Signed-off-by: Stefano Babic
CC: Fabio Estevam
CC: Akshay Bhat
CC: Ken Lin
CC: Marek Vasut
CC: Heiko Schocher
CC: "Sébastien Szymanski"
CC: Christian Gmeiner
CC: Stefan Roese
CC: Patrick Bruenn
CC: Troy Kisky
CC: Nikita Kiryanov
CC: Otavio Salvador
CC: "Eric Bénard"
CC: Jagan Teki
CC: Ye Li
CC: Peng Fan
CC: Adrian Alonso
CC: Alison Wang
CC: Tim Harvey
CC: Martin Donnelly
CC: Marcin Niestroj
CC: Lukasz Majewski
CC: Adam Ford
CC: "Albert ARIBAUD (3ADEV)"
CC: Boris Brezillon
CC: Soeren Moch
CC: Richard Hu
CC: Wig Cheng
CC: Vanessa Maegima
CC: Max Krummenacher
CC: Stefan Agner
CC: Markus Niebel
CC: Breno Lima
CC: Francesco Montefoschi
CC: Jaehoon Chung
CC: Scott Wood
CC: Joe Hershberger
CC: Anatolij Gustschin
CC: Simon Glass
CC: "Andrew F. Davis"
CC: "Łukasz Majewski"
CC: Patrice Chotard
CC: Nobuhiro Iwamatsu
CC: Hans de Goede
CC: Masahiro Yamada
CC: Stephen Warren
CC: Andre Przywara
CC: "Álvaro Fernández Rojas"
CC: York Sun
CC: Xiaoliang Yang
CC: Chen-Yu Tsai
CC: George McCollister
CC: Sven Ebenfeld
CC: Filip Brozovic
CC: Petr Kulhavy
CC: Eric Nelson
CC: Bai Ping
CC: Anson Huang
CC: Sanchayan Maity
CC: Lokesh Vutla
CC: Patrick Delaunay
CC: Gary Bisson
CC: Alexander Graf
CC: u-boot@lists.denx.de
Reviewed-by: Fabio Estevam
Reviewed-by: Christian Gmeiner -
This I2C mux is found, for example, on the Turris Omnia board.
Signed-off-by: Marek Behun
Reviewed-by: Heiko Schocher
Signed-off-by: Stefan Roese
09 Jul, 2017
1 commit
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Signed-off-by: Christophe Leroy
Reviewed-by: Heiko Schocher
07 Jul, 2017
1 commit
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AVR32 is gone. It's already more than two years for no support in Buildroot,
even longer there is no support in GCC (last version is heavily patched 4.2.4).Linux kernel v4.12 got rid of it (and v4.11 didn't build successfully).
There is no good point to keep this support in U-Boot either.
Reviewed-by: Simon Glass
Reviewed-by: Tom Rini
Reviewed-by: Heiko Schocher
Signed-off-by: Andy Shevchenko
04 Jul, 2017
1 commit
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There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.Signed-off-by: Heiko Schocher
