| Commit message (Collapse) | Author | Age | Lines |
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Add I2C support.
Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
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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>
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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>
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Signed-off-by: Wolfgang Denk <wd@denx.de>
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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>
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Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
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Convert IO macros to readx/writex.
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
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Signed-off-by: Wolfgang Denk <wd@denx.de>
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Signed-off-by: Heiko Schocher <hs@denx.de>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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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>
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This patch adds the option for a boardspecific
I2C deblocking mechanism for the soft i2c driver.
Signed-off-by: Heiko Schocher <hs@denx.de>
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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>
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Signed-off-by: Heiko Schocher <hs@denx.de>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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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>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Stefan Roese <sr@denx.de>
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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>
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Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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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>
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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>
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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>
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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>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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