The uclass implements the same operations as the current I2C framework but
makes some changes to make it fit driver model better:
- Remove the chip address from API calls
- Remove the address length from API calls
- Remove concept of 'current' I2C bus
- Drop all existing init functions
Acked-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Adds support for set-speed on the OMAP24xx I2C Adapter.
Changes to omap24_i2c_write(...) for polling ARDY Bit from IRQ-Status.
Otherwise on a subsequent call the transfer of last byte from the
predecessor is aborted and therefore lost. For exmaple when
i2c_write(...) is followed by a i2c_setspeed(...) (which has to
deactivate and activate master for changing psc,...).
Minor cosmetical changes.
Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
Cc: Heiko Schocher <hs@denx.de>
Since the required API is gpio which is enclosed with CONFIG_ATMEL_LEGACY use
that switch here.
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Acked-by: Heiko Schocher <hs@denx.de>
(Interface is not quite the same as Phillips PCA9547.)
Signed-off-by: Michael Burr <michael.burr@logicpd.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <monstr@monstr.eu>
The I2C_MULTI_BUS needs to be defined for correct I2C operation with
many software emulated I2C controllers.
This fix restores correct value of the I2C_MULTI_BUS changed by following
commit:
SHA1: 385c9ef5a7
i2c: add i2c_core and prepare for new multibus support
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Heiko Schocher <hs@denx.de>
The sandburst-specific i2c drivers have been deleted, conflict was just
over the SPDX conversion.
Conflicts:
board/sandburst/common/ppc440gx_i2c.c
board/sandburst/common/ppc440gx_i2c.h
Signed-off-by: Tom Rini <trini@ti.com>
CONFIG_I2C_MUX is replaced through the new i2c multibus/multiadapter
framework, configured through CONFIG_SYS_I2C. As CONFIG_I2C_MUX
is only used on the keymile boards, and they are now completely
moved to the new framework, remove CONFIG_I2C_MUX.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Holger Brunck <holger.brunck@keymile.com>
Tested-By: Holger Brunck <holger.brunck@keymile.com>
- added to soft_i2c driver new multibus/multiadpater support
- adapted all config files, which uses this driver
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
This Patch introduce the new i2c_core file, which holds
the I2C core functions, for the rework of the multibus/
multiadapter support.
Also adds changes in i2c.h for the new I2C multibus/multiadapter
support. This new support can be activated with the
CONFIG_SYS_I2C define.
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Functions added to get the I2C bus number and reset I2C bus using
FDT node.
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Support for multiple soft I2C buses.
Multibus I2C support is achieved by defining get_multi_{sda|scl}_pin
functions to switch between multiple "soft" I2C buses.
Common definition of I2C_X I2C buses is provided at <i2c.h>.
TEST HW:
Samsung's Exynos4210 evt.0.1 - Trats development board
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Heiko Schocher <hs@denx.de>
* Since AT91 name schema was changed to ATMEL_BASE_xxx, I2C_SOFT
on AT91 devices fails with 'error: ATMEL_FIO_BASE undeclared'
* change ATMEL_PIO_BASE to ATMEL_BASE_PIOA will fix this
Signed-off-by: Jens Scharsig <esw@bus-elektronik.de>
cmd_date.c: In function ‘do_date’:
cmd_date.c:50:6: warning: variable ‘old_bus’ set but not used
[-Wunused-but-set-variable]
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
This reverts commit 60ce53cf9f.
The commit causes build breakage for a number of boards. This results
from the fact that now the arguments of debug() actually get
referenced (even if there is hope that the compiler will optimize
away the debug() call). The obvious fix to that probem (change the
code to always declare the referenced variables and data structures)
increases the code size, and was this rejected. So it was decided to
revert this commit until a better solution is found.
Fix the following gcc4.6 problems:
cmd_date.c: In function ‘do_date’:
cmd_date.c:50:6: warning: variable ‘old_bus’ set but not used
[-Wunused-but-set-variable]
asix.c: In function ‘asix_init’:
asix.c:317:6: warning: variable ‘rx_ctl’ set but not used
[-Wunused-but-set-variable]
usb.c: In function ‘usb_parse_config’:
usb.c:331:17: warning: variable ‘ch’ set but not used
[-Wunused-but-set-variable]
usb.c: In function ‘usb_hub_port_connect_change’:
usb.c:1123:29: warning: variable ‘portchange’ set but not used
[-Wunused-but-set-variable]
usb.c: In function ‘usb_hub_configure’:
usb.c:1183:25: warning: variable ‘hubsts’ set but not used
[-Wunused-but-set-variable]
usb_storage.c: In function ‘usb_stor_CB_reset’:
usb_storage.c:466:6: warning: variable ‘result’ set but not used
[-Wunused-but-set-variable]
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
To make sure that the mux can be configured a deblocking sequence
is done before the mux configuration. After the mux switch the new leaf
of, the i2c tree must be again deblocked.
Signed-off-by: Stefan Bigler <stefan.bigler@keymile.com>
Acked-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
cc: Detlev Zundel <dzu@denx.de>
cc: Prafulla Wadaskar <prafulla@marvell.com>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
This patch adds a callpoint in i2c_init that allows board specific
i2c board initialization (typically for i2c bus reset) that is called
after i2c_init operations, allowing the i2c_board_late_init function
to use the pre-configured i2c bus speed and slave address.
* add's a warning to all files, which need update to new SoC access
* convert common files in cpu/../at91 and a lot of drivers to use
c stucture SoC access
Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
- CONFIG_SYS_MAX_I2C_BUS changed to 1
We use only one I2C hardwarecontroller on this boards, so
change the CONFIG_SYS_MAX_I2C_BUS to 1.
- common: dont print errormsg if second IVM Block lacks.
- 82xx, mgcoge: fix double mtdpart entry in environment
- 82xx, mgcoge: activate on second Flash the second bank.
- common: CONFIG_ENV_SIZE 0x4000 for all keymile boards
- common: Change malloc size to 1MByte for all Keymile boards
We need a bigger malloc area for the environment support (128k)
on some Keymile boards (kmeter1) and the upcoming UBI support.
Change it to 1MB for all Keymile boards to be on the save side.
Also define CONFIG_SYS_64BIT_VSPRINTF which is needed for
UBI/UBIFS support.
- Add UBI support to all Keymile boards
- change manner of writing "/localbus/ranges" node
instead of writting the complete "/localbus/ranges" node
before booting Linux, only update the ranges entries
which gets dynamical detected (size of flashes).
This is needed, because keymile adds in the DTS
"/localbus/ranges" node entries, which u-boot must
not overwrite/delete.
- kmeter, mgcoge: define 2 seperate regions needed for the Intel P30 chips
The Intel P30 chip has 2 non-identical chips on
one die, so we need to define 2 seperate regions
that are scanned by physmap_of independantly.
- kmeter1: Add MTD concat support to Keymile boards
- 82xx, mgcoge: add "unlock=yes" to default environment
- added CONFIG_MTD_DEVICE to get in sync with mainline code
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
Many boards/controllers/drivers don't support an I2C slave interface,
however CONFIG_SYS_I2C_SLAVE is used in common code so provide a
default
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
The Blackfin i2c driver has been rewritten thus the special ifdefs in the
common code are no longer needed.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
All implementations of the functions i2c_reg_read() and
i2c_reg_write() are identical. We can save space and simplify the
code by converting these functions into inlines and putting them in
i2c.h.
Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-By: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
With this Command it is possible to add new I2C Busses,
which are behind 1 .. n I2C Muxes. Details see README.
Signed-off-by: Heiko Schocher <hs@denx.de>
This patch fixes the following warnings, when using
the soft_i2c driver using no CPU pins on MPC82xx or MPC8xx
systems:
soft_i2c.c: In function 'send_reset':
soft_i2c.c:93: warning: unused variable 'immr'
soft_i2c.c: In function 'send_start':
soft_i2c.c:124: warning: unused variable 'immr'
soft_i2c.c: In function 'send_stop':
soft_i2c.c:146: warning: unused variable 'immr'
soft_i2c.c: In function 'send_ack':
soft_i2c.c:171: warning: unused variable 'immr'
soft_i2c.c: In function 'write_byte':
soft_i2c.c:196: warning: unused variable 'immr'
soft_i2c.c: In function 'read_byte':
soft_i2c.c:244: warning: unused variable 'immr'
Signed-off-by: Heiko Schocher <hs@denx.de>
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).
Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.
Signed-off-by: Wolfgang Denk <wd@denx.de>
This patch adds support for multiple I2C busses on the PPC4xx
platforms. Define CONFIG_I2C_MULTI_BUS in the board config file
to make use of this feature.
It also merges the 405 and 440 i2c header files into one common
file 4xx_i2c.h.
Also the 4xx i2c reset procedure is reworked since I experienced
some problems with the first access on the 440SPe Katmai board.
Signed-off-by: Stefan Roese <sr@denx.de>
Hello,
Attached is a patch providing support for multiple I2C buses at the
command level. The second part of the patch includes an implementation
for the MPC834x CPU and MPC8349EMDS board.
/*** Note: This patch replaces ticket DNX#2006083042000018 ***/
Signed-off-by: Ben Warren <bwarren@qstreams.com>
Overview:
1. Include new 'i2c' command (based on USB implementation) using
CONFIG_I2C_CMD_TREE.
2. Allow multiple buses by defining CONFIG_I2C_MULTI_BUS. Note that
the commands to change bus number and speed are only available under the
new 'i2c' command mentioned in the first bullet.
3. The option CFG_I2C_NOPROBES has been expanded to work in multi-bus
systems. When CONFIG_I2C_MULTI_BUS is used, this option takes the form
of an array of bus-device pairs. Otherwise, it is an array of uchar.
CHANGELOG:
Added new 'i2c' master command for all I2C interaction. This is
conditionally compiled with CONFIG_I2C_CMD_TREE. New commands added for
setting I2C bus speed as well as changing the active bus if the board
has more than one (conditionally compiled with
CONFIG_I2C_MULTI_BUS). Updated NOPROBE logic to handle multiple buses.
Updated README.
regards,
Ben
the HSYNC/VSYNC. Requires new CPLD code (Version 101 for Rev. 100
boards, version 153 for Rev. 200 boards).
* Patch by Vladimir Gurevich, 12 Mar 2003:
Fix relocation problem of statically initialized string pointers
in common/cmd_pci.c
* Patch by Kai-Uwe Blm, 12 Mar 2003:
Cleanup & bug fixes for JFFS2 code:
- the memory mangement was broken. It caused havoc on malloc by
writing beyond the block boundaries.
- the length calculation for files was wrong, sometimes resulting
in short file reads.
- data copying now optionally takes fragment version numbers into
account, to avoid copying from older data.
See doc/README.JFFS2 for details.
