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path: root/drivers/i2c
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2009-03-188xx: add support for new keymile kmsupx4 board.Heiko Schocher
This patch adds support for the kmsupx4 board from Keymile, based on a Freescale MPC852T CPU - serial console on SMC1 - 32 MB SDRAM - 32 MB NOR Flash - Ethernet over SCC3 - I2C Bitbang Signed-off-by: Heiko Schocher <hs@denx.de>
2009-03-0583xx, i2c: add mux support for fsl_i2cHeiko Schocher
This patch adds I2C mux support for the fsl_i2c driver. This allows you to add "new" i2c busses, which are reached over i2c muxes. For more infos, please look in the README and search for CONFIG_I2C_MUX. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2009-02-14i.MX31: Start the I2C clock on driver initialisationGuennadi Liakhovetski
i.MX31 powers on with most clocks running, so, after a power on this explicit clock start up is not required. However, as Linux boots it disables most clocks to save power. This includes the I2C clock. If we then soft reboot from Linux the I2C clock stays off. This breaks the phycore, which has its environment in I2C EEPROM. Fix the problem by explicitly starting the clock in I2C driver initialisation routine. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Ack-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-02-01Merge branch 'master' of git://git.denx.de/u-boot-armWolfgang Denk
2009-01-28Blackfin: overhaul i2c driverMike Frysinger
The current Blackfin i2c driver does not work properly with certain devices due to it breaking up transfers incorrectly. This is a rewrite of the driver and relocates it to the newer place in the source tree. Also remove duplicated I2C speed defines in Blackfin board configs and disable I2C slave address usage since it isn't implemented. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-01-27soft_i2c.c add option for repeated start in i2c_read()Andrew Dyer
This patch adds a #define to optionally change the behaviour of i2c_read() in soft_i2c.c to send an I2C repeated start instead of a stop-start between sending the device address pointer write and reading back the data. The current behaviour is retained as the default. While most devices will work either way, I have a smart battery(*) that requires repeated start, and someone at some point found a device that required a stop-start. (*) http://www.inspired-energy.com/Standard_Products/NL2054/NL2054%20Rev1.0%20Data%20Sheet.pdf Signed-off-by: Andrew Dyer <adyer@righthandtech.com>
2009-01-24OMAP3: Add I2C supportDirk Behme
Add I2C support. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
2008-12-16Coding style cleanup, update CHANGELOG.Wolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-12-15i2c: merge all i2c_reg_read() and i2c_reg_write() into inline functionsTimur Tabi
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>
2008-12-09Section name should be ".data", not "data"Trent Piepho
Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-11-21ARM: OMAP: Convert IO macrosDirk Behme
Convert IO macros to readx/writex. Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
2008-10-21Cleanup: fix "MHz" spellingWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-10-18mgsuvd: fix compiler warning when using soft_i2c driverHeiko Schocher
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18I2C: adding new "i2c bus" Command to the I2C Subsystem.Heiko Schocher
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>
2008-10-18soft_i2c: Add CFG_I2C_INIT_BOARD optionHeiko Schocher
This patch adds the option for a boardspecific I2C deblocking mechanism for the soft i2c driver. Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18soft_i2c: prevent compiler warnings if driver does not use CPU Pins.Heiko Schocher
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>
2008-10-18i2c: add CONFIG_I2C_MULTI_BUS for soft_i2c and mpc8260 i2c driver.Heiko Schocher
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-09-01Merge branch 'Makefile' of git://git.denx.de/u-boot-armWolfgang Denk
2008-08-29soft_i2c: move to drivers/i2cJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-08-28Add I2C frequency dividers for ColdFireTsiChung Liew
The existing I2C freqency dividers for FDR does not apply to ColdFire platforms; thus, a seperate table is added based on MCF5xxx Reference Manual Signed-off-by: Luigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com> Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com> Acked-by: Tabi Timur <timur@freescale.com>
2008-08-18i2c: Clean drivers/i2c/ MakefileMichal Simek
Signed-off-by: Michal Simek <monstr@monstr.eu>
2008-08-06Fix merge problemsStefan Roese
Signed-off-by: Stefan Roese <sr@denx.de>
2008-05-21Big white-space cleanup.Wolfgang Denk
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>
2008-04-13Fix warnings introduced by I2C bus speed setting patchKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-04-13add an i2c driver for mx31Sascha Hauer
This patch adds an i2c driver for Freescale i.MX processors Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
2008-04-11Revert merge of git://www.denx.de/git/u-boot-arm, commit 62479b18:Wolfgang Denk
Reverting became necessary after it turned out that the patches in the u-boot-arm repo were modified, and in some cases corrupted. This reverts the following commits: 066bebd6353e33af3adefc3404560871699e9961 7a837b7310166ae8fc8b8d66d7ef01b60a80f9d6 c88ae20580b2b01487b4cdcc8b2a113f551aee36 a147e56f03871bba4f05058d5e04ce7deb010b04 d6674e0e2a6a1f033945f78838566210d3f28c95 8c8463cce44d849e37744749b32d38e1dfb12e50 c98b47ad24b2d91f41c09a3d62d7f70ad84f4b7d 8bf69d81782619187933a605f1a95ee1d069478d 8c16cb0d3b971f46fbe77c072664c0f2dcd4471d a574a73852a527779234e73e17e7597fd8128882 1377b5583a48021d983e1fd565f7d40c89e84d63 1704dc20917b4f71e373e2c888497ee666d40380 Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-03-30add an i2c driver for mx31Sascha Hauer
This patch adds an i2c driver for Freescale i.MX processors Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
2008-03-27Add support for setting the I2C bus speed in fsl_i2c.cTimur Tabi
Add support to the Freescale I2C driver (fsl_i2c.c) for setting and querying the I2C bus speed. Current 8[356]xx boards define the CFG_I2C_SPEED macro, but fsl_i2c.c ignores it and uses conservative value when programming the I2C bus speed. Signed-off-by: Timur Tabi <timur@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com>
2007-11-20drivers/i2c : move i2c drivers to drivers/i2cJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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