Commit graph

656 commits

Author SHA1 Message Date
Bin Meng
e0cfc20984 i2c: omap24xx: Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.

To mitigate this potential impact, the following changes are
implemented:

- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
  only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
  is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
  drivers that support both statically declared devices and
  configuration from device tree

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:28 -08:00
Tom Rini
cf033e04da Merged imx8 architecture, fix build for imx8 + warnings
-----BEGIN PGP SIGNATURE-----
 
 iQHDBAABCgAtFiEEiZClFGvhzbUNsmAvKMTY0yrV63cFAlvRk0gPHHNiYWJpY0Bk
 ZW54LmRlAAoJECjE2NMq1et3IuAL/0jfCqEIzKbPXIz81zJ+43ZNPsyu4LluUFsP
 2s5+yKN4zPnxDaHmVyxKynREqCNCcbfz7biStEPRzIjQYPBWUWrqz1yceqvOTqWQ
 eh51ItNeow28IlnVEr40e5cNL28KPsAdO8Tx6yNiXdPndPOgm3DuFlT+Xbnv2/+P
 X9GYBoCD7EQ3aUJBDUKcN/AFSAl8YCQ43FKhowM18/ExeURiKk8YDRXVFgTDDd4J
 HIlzUbyeIG24xfmxc0MsUMEufMjqQE7k/tMfFvQJiwLBLkzuO+1WmbPlWd7XHqco
 t68mheBcm8m2G/CZJoxCy8ymUi5PKDJBhw3qQz646h+JiXP1lg7Yw8hf4nREV56k
 v/bMiDU1exIflI9Qf8CibxRAYv3bjKJD6p/uua2CIvsLO4emLPbi7DHFBdaQq+WB
 r32O0Xc6LiRBIhr/qeL/5HmxFT2o4lo+O9ybo10uhK8RA1LTPlQ0UNMwmSPLl4zR
 7e5YwnRCcHV492+/Fn31LWXUUVVxVw==
 =kkpS
 -----END PGP SIGNATURE-----

Merge tag 'u-boot-imx-20181025' of git://git.denx.de/u-boot-imx

Merged imx8 architecture, fix build for imx8 + warnings
2018-10-25 10:16:21 -04:00
Anatolij Gustschin
7677c0de14 i2c: imx_lpi2c: fix typo and register base address format
Output the register base address in hex notation.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2018-10-22 14:35:57 +02:00
Heiko Schocher
e3bc4bb861 i2c: fix: Add support for the Arm's Versatile Express I2C controller
accidentially while fixing merge errors for patch:
https://lists.denx.de/pipermail/u-boot/2018-September/342278.html

missed to add files:

MAINTAINERS
drivers/i2c/Kconfig
drivers/i2c/Makefile

add them with this patch.

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Liviu Dudau <liviu.dudau@foss.arm.com>
2018-10-12 07:25:39 +02:00
Liviu Dudau
86c83e8400 i2c: Add support for the Arm's Versatile Express I2C controller.
The Arm Versatile Express I2C controller is a simple register-based
controller that uses a register to control the state of the SCL and
SDA lines. Add support for it.

Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2018-10-03 06:08:06 +02:00
Tom Rini
45ec3228f2 Merge branch 'master' of git://git.denx.de/u-boot-i2c 2018-09-14 09:33:01 -04:00
Tuomas Tynkkynen
ca1d6ca365 i2c: Drop CONFIG_SYS_I2C_MXS
Last user of this driver went away in May 2017, in
commit eb5ba3aefd ("i2c: Drop use of CONFIG_I2C_HARD")

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
2018-09-14 06:30:29 +02:00
Adam Ford
410c505cc1 DM: OMAP24XX_I2C: Reduce overhead when used with OF_PLATDATA
Platforms with limited resources in SPL may enably OF_PLATDATA,
this limits some of the library functions and cannot extract data
from the device tree.  This patch adds additional wrappers around
these functions to only allow them when OF_CONTROL is enabled and
OF_PLATDATA is not.

Signed-off-by: Adam Ford <aford173@gmail.com>
2018-09-11 21:38:47 -04:00
Adam Ford
afa8cdd607 DM: I2C: Reduce overhead when used with OF_PLATDATA
Platforms with limited resources in SPL may enably OF_PLATDATA,
this limits some of the library functions and cannot extract data
from the device tree.  This patch adds additional wrappers around
these functions to only allow them when OF_CONTROL is enabled and
OF_PLATDATA is not.

Signed-off-by: Adam Ford <aford173@gmail.com>
2018-09-11 21:38:42 -04:00
Adam Ford
9f8cf76be2 Convert CONFIG_SYS_I2C_DAVINCI to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_I2C_DAVINCI

Signed-off-by: Adam Ford <aford173@gmail.com>
2018-08-17 15:43:38 -04:00
Simon Goldschmidt
004167048d kconfig: fix typo 'parition'
Replaced misspelled words "parition"/"paritioning" (missing 't') in two
Kconfig files by correct words "partition"/"partitioning"

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-08-17 09:22:35 -04:00
Peng Fan
3d7690aec1 i2c: imx_lpi2c: add uclass api support
Use uclass clk api to get per clk when CONFIG_CLK enabled.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2018-08-06 14:28:23 +02:00
Peng Fan
16f513ee78 i2c-mux: pca954x: support pca9646 i2c switch
Add the PCA9646 support, which is 2-wire bus switch and buffered 4-channel.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2018-08-06 14:28:20 +02:00
Alexander Kochetkov
5944bd9a25 rockchip: i2c: enable i2c controller for rk3066 and rk3188
rk3066 and rk3188 has two I2C controller implementations.
Current I2C driver wan't work with legacy implementation.
Switching between controllers is performed using a bit inside
GFR_SOC_CON1 register. The bit setting is performed by pinctrl
driver. The patch ask pinctrl to do settings.

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[fix warnings by including the rk3228 variant in the compatible-list]:
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-07-21 01:55:25 +02:00
Ye Li
971490c892 lpi2c: Add bus busy error handling
When doing "i2c dev 4; i2c probe" with ENET daughter card connected
on iMX8QXP MEK board, we met a i2c bus busy issue, that the BBF of
lpi2c always show busy, but the master is idle, and stop is detected
(SDF set).

This patch addes a handling to re-init the lpi2c master for this
case. Then the issue can be worked around.

Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2018-07-12 11:09:42 +02:00
Ye Li
d144f61ad3 lpi2c: Fix bus stop problem in xfer
In xfer function, both bus_i2c_read and bus_i2c_write will
send a STOP command.  This causes a problem when reading register
data from i2c device.

Generally two operations comprise the register data reading:
   1. Write the register address to i2c device.
      START | chip_addr | W | ACK | register_addr | ACK |

   2. Read the Data from i2c device.
      START | chip_addr | R | ACK | DATA          | NACK | STOP

The STOP command should happen at the end of the transfer, otherwise
we will always get data from register address 0

Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2018-07-12 11:09:23 +02:00
Gao Pan
a32effd283 imx: lpi2c: fix clock issue when NACK detected
For LPI2C IP, NACK is detected by the rising edge of the ninth clock.
In current uboot driver, once NACK is detected, it will reset and then
disable LPI2C master. As a result, we can never see the falling edge
of the ninth clock.

Signed-off-by: Gao Pan <pandy.gao@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2018-07-12 11:09:07 +02:00
Ye Li
9b2ebcc060 imx_lpi2c: Update lpi2c driver to support imx8
Add compatible string for i.MX8 and move imx_lpi2c.h from mx7ulp directory
to u-boot include directory as a common header file.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2018-07-12 11:08:41 +02:00
Beniamino Galvani
2e668af553 meson: use the clock driver
Use the clk framework to initialize clocks from drivers that need them
instead of having hardcoded frequencies and initializations from board
code.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2018-06-19 07:31:47 -04:00
Baruch Siach
173ec35191 i2c: mvtwsi: disable i2c slave on Armada 38x
Equivalent code that disables the hidden i2c0 slave already exists in
the Turris Omnia platform specific code. But this hidden i2c0 slave that
interferes the i2c bus is not board specific. Armada 38x SoCs and at
least some Kirkwood variants are affected as well. Add code to disable
this slave to the i2c bus driver to make it work on all affected
hardware.

Use the bind callback because we want this to always run at boot,
regardless of whether U-Boot uses the i2c bus.

Cc: Rabeeh Khoury <rabeeh@solid-run.com>
Cc: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
2018-06-07 14:19:55 +02:00
Tuomas Tynkkynen
2239690aca i2c: Drop CONFIG_SH_SH7734_I2C
Last user of this driver went away in May 2017 in commit
eb5ba3aefd ("i2c: Drop use of CONFIG_I2C_HARD").

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
Acked-by: Heiko Schocher <hs@denx.de>
2018-05-23 17:30:04 -04:00
Tuomas Tynkkynen
d70c79fa89 i2c: Drop CONFIG_TSI108_I2C
Last user of this driver went away in June 2015 in commit
d928664f41 ("powerpc: 74xx_7xx: remove 74xx_7xx cpu support")

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
Acked-by: Heiko Schocher <hs@denx.de>
2018-05-23 17:30:04 -04:00
Marek Vasut
a06a0ac36d i2c: rcar_i2c: Add DM and DT capable I2C driver
Add derivative of the rcar_i2c driver which is capable of
probing itself from DM and uses DT.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2018-05-20 12:06:54 +02:00
Marek Vasut
a4d9aafadb i2c: rcar_i2c: Remove the driver
Remove the rcar_i2c driver, since it's no longer used by any
board and will be superseded by a DM and DT capable variant.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2018-05-20 12:06:54 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00
Tom Rini
d024236e5a Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
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>
2018-04-27 14:54:48 -04:00
Dinh Nguyen
622597dee4 i2c: designware: add reset ctrl to driver
Add code to look for a reset manager property. Specifically, look for the
reset-names of 'i2c'. A reset property is an optional feature, so only print
out a warning and do not fail if a reset property is not present.

If a reset property is discovered, then use it to deassert, thus bringing the
IP out of reset.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
2018-04-17 11:39:49 +02:00
Tom Rini
ebca902aeb Merge git://git.denx.de/u-boot-imx
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-15 08:43:50 -04:00
Mario Six
e5c762f5a7 i2c: fsl: Add option to get clock from DT
Add an option to get the clock speed from the device tree, hence adding
compatibility with DM clock drivers.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-04-11 11:34:55 +02:00
Mario Six
d934832de6 i2c: fsl: Use dev_read_addr
Since bus translations are now fully supported, use a plain
"dev_read_addr" to get the device address from the device tree.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-04-11 11:34:46 +02:00
Mario Six
2df71d6d6a i2c: ihs_i2c: Use new fpgamap interface
The fpgamap interface has been switched to a "single function + data
size" interface. Reflect this change in the IHS I2C driver.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-04-11 11:34:37 +02:00
Alexander Kochetkov
aa54192d4a dm: i2c: implement gpio-based I2C deblock
The commit implement a gpio-based software deblocking. The code
extract I2C pins description from device tree, switch pins to GPIO
mode, toggle SCL until slave release SDA, send I2C stop and switch
I2C pins back to I2C mode.

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
2018-04-11 11:34:27 +02:00
Christophe Leroy
f110892f3d soft_i2c: cleanup - no mpc8xx support
commit 907208c452 ("powerpc: Partialy restore core of mpc8xx")
didn't bring back support for I2C on the mpc8xx

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
2018-04-06 16:30:37 -04:00
Sriram Dash
fa452192cb drivers: i2c: mxc: Update support to 8 I2C controllers
Existing driver supports upto 4 I2C controllers.
But some of future NXPs SoCs like lx2160a has
eight I2C controllers.

Update MXC driver to support upto 8 I2C controllers

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
2018-03-29 17:21:06 +02:00
Sriram Dash
942ecc8bd8 drivers: i2c: mxc: Update SYS_I2C_MXC_I2C support in Kconfig
NXP layerscape platforms like ls1088a, ls2088a
uses MXC I2C Controller.
-Remove dependency of MX6 for the same.

Update related configs to use Kconfig file.
-Add SYS_I2C_MXC_I2C1,_I2C2,_I2C3,_I2C4 in Kconfig
-Add CONFIG_SYS_MXC_I2C1_SPEED,_I2C2_,_I2C3_,_I2C4_ in Kconfig
-Add CONFIG_SYS_MXC_I2C1_SLAVE,_I2C2_,_I2C3_,_I2C4_ in Kconfig

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
2018-03-29 17:20:42 +02:00
Heinrich Schuchardt
d45c2f392e i2c: lpi2c: remove superfluous assignments
In

	lpi2c_status_t result = A;
	result = B;

the first assignment has no effect. Let's remove it.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-03-23 08:28:49 +01:00
Patrick Delaunay
2514c2d0e6 arm: stm32: add new architecture for STM32MP family
- add new arch stm32mp for STM32 MPU/Soc based on Cortex A
- support for stm32mp157 SOC
- SPL is used as first boot stage loader
- using driver model for all the drivers, even in SPL
- all security feature are deactivated (ETZC and TZC)
- reused STM32 MCU drivers when it is possible

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-03-19 16:14:21 -04:00
Patrick Delaunay
35746c0138 stm32mp: stm32f7_i2c: use calloc instead of kmalloc
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>
2018-03-19 16:14:21 -04:00
Mario Six
d38826a3dc treewide: Fix gdsys mail addresses
The @gdsys.cc addresses are supposed to be used for mailing lists.
Switch all occurrences of @gdsys.de mail addresses to their @gdsys.cc
equivalent.

Also, Dirk's address was wrong in one place; fix that as well.

Signed-off-by: Mario Six <six@gdsys.cc>
2018-03-09 09:23:10 -05:00
Vipul Kumar
e885b4255f i2c: Added kconfig support for CONFIG_ZYNQ_I2C0 and CONFIG_ZYNQ_I2C1
This patch added Kconfig support for CONFIG_ZYNQ_I2C0 and
CONFIG_ZYNQ_I2C1 and enabled it in respective defconfig.

Signed-off-by: Vipul Kumar <vipulk@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-03-01 08:03:01 +01:00
Vipul Kumar
ce3c9a59af i2c: Added Kconfig support for CONFIG_SYS_I2C_ZYNQ_SPEED
This patch added Kconfig support for CONFIG_SYS_I2C_ZYNQ_SPEED
and set it to default value 100000.

Signed-off-by: Vipul Kumar <vipulk@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-03-01 08:03:01 +01:00
Vipul Kumar
e7affad190 i2c: Added Kconfig support for CONFIG_SYS_I2C_ZYNQ_SLAVE
This patch added Kconfig support for CONFIG_SYS_I2C_ZYNQ_SLAVE
and set it default to 0.

Signed-off-by: Vipul Kumar <vipulk@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-03-01 08:03:01 +01:00
Vipul Kumar
38a69e96b3 i2c: Added Kconfig support for CONFIG_SYS_I2C_ZYNQ
This patch added Kconfig support for CONFIG_SYS_I2C_ZYNQ.

Signed-off-by: Vipul Kumar <vipulk@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-03-01 08:03:00 +01:00
Stefan Mavrodiev
004b4cdaec i2c: mvtwsi.c: Fix set speed
Previous patch for this driver breaks i2c initialization.

commit 8bcf12ccce ("i2c: mvtwsi.c: Avoid NULL dereference")

If actual_speed is passed as NULL in this function:
static void __twsi_i2c_init(struct mvtwsi_registers *twsi, int speed,
			    int slaveadd, uint *actual_speed)
than __twsi_i2c_set_bus_speed never get called. This causes i2c clock
to run on default speed - 2MHz (measured with oscilloscope). This is issue
on some boards, sunxi for example, since on I2C0 bus PMU is connected.

The bootlogs with and without the patch are as follows:

Wihtout the patch:
U-Boot SPL 2018.03-rc2 (Feb 13 2018 - 09:23:17 +0200)
DRAM: 1024 MiB
Failed to set core voltage! Can't set CPU frequency
Trying to boot from FEL

U-Boot 2018.03-rc2 (Feb 13 2018 - 09:23:17 +0200) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
Model: Olimex A20-OLinuXino-LIME2
I2C:   ready
DRAM:  1 GiB
MMC:   SUNXI SD/MMC: 0

With the patch:
U-Boot SPL 2018.03-rc2-00001-g838ff85 (Feb 13 2018 - 09:24:34 +0200)
DRAM: 1024 MiB
CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
Trying to boot from FEL

U-Boot 2018.03-rc2-00001-g838ff85 (Feb 13 2018 - 09:24:34 +0200) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
Model: Olimex A20-OLinuXino-LIME2
I2C:   ready
DRAM:  1 GiB
MMC:   SUNXI SD/MMC: 0

Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2018-02-19 08:21:38 +01:00
Marek Vasut
f51155eced i2c: rcar_iic: Allow IIC on RCar Gen2
The IIC on Gen2 is compatible with this driver as well, allow it.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2018-02-17 21:59:22 +01:00
Heinrich Schuchardt
8bcf12ccce i2c: mvtwsi.c: Avoid NULL dereference
For '#ifndef CONFIG_DM_I2C' twsi_i2c_init() passes NULL as
4th parameter to __twsi_i2c_init().

Identified with cppcheck.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-02-06 07:02:32 +01:00
Mario Six
9cef983d1c i2c: ihs_i2c: Factor out send_buffer method
Simplify the driver logic by extracting a common send_buffer method.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-02-06 07:02:11 +01:00
Mario Six
92164216a7 i2c: ihs_i2c: Make DM compatible
Make the ihs_i2c driver DM-compatible; for legacy boards, the old functions are
retained within #ifdefs.

No board uses the new DM driver yet; this patch only lays the foundation for
future support.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-02-06 07:01:06 +01:00
Mario Six
64ef094bc5 i2c: ihs_i2c: Prepare DM conversion
Prepare the function interface of the ihs_i2c driver for DM conversion
in a future patch.

While we're at it, fix some style violations, and make the code more readable.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-02-06 07:00:33 +01:00
Mario Six
84a4d34e96 i2c: fsl_i2c: Make live-tree compatible
Make the fsl_i2c driver compatible with a live device tree.

Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-02-06 06:59:59 +01:00