u-boot.git/drivers/i2c, branch v2013.07

i2c: fsl_i2c: i2c_read(): dont try to write address w/ alen=0

2013-07-16T22:44:30+00:00

if alen is 0: no longer start a write cycle before reading data.

Signed-off-by: Dirk Eibach 
Signed-off-by: Reinhard Pfau 
Acked-by: Heiko Schocher 
Signed-off-by: Andy Fleming

EXYNOS: Resolve the i2c compilation error

2013-07-10T05:20:26+00:00

This patch resolves the below mentioned compilation error of i2c driver
for non-FDT case

Compilation error:
s3c24x0_i2c.c: In function 'board_i2c_init':
s3c24x0_i2c.c:544:18: error: 'CONFIG_MAX_I2C_NUM' undeclared (first use
in this function) s3c24x0_i2c.c:544:18: note: each undeclared
identifier is reported only once for each function it appears in
s3c24x0_i2c.c:545:3: warning: implicit declaration of function

Signed-off-by: Rajeshwari Shinde 
Signed-off-by: Amar 
Signed-off-by: Minkyu Kang

EXYNOS5: I2C: Add FDT and non-FDT support for I2C

2013-06-24T02:25:19+00:00

This patch updates the function board_i2c_init() to add support for both
FDT and non-FDT for I2C, and initialise the I2C channels.

Signed-off-by: Amar 
Acked-by: Simon Glass 
Signed-off-by: Minkyu Kang

ARM: OMAP: I2C: New read, write and probe functions

2013-06-10T12:43:26+00:00

New i2c_read, i2c_write and i2c_probe functions, tested on OMAP4
(4430/60/70), OMAP5 (5430) and AM335X (3359); should work on older
OMAPs and derivatives as well. The only anticipated exception would
be the OMAP2420, which shall require driver modification.
- Rewritten i2c_read to operate correctly with all types of chips
  (old function could not read consistent data from some I2C slaves).
- Optimised i2c_write.
- New i2c_probe, performs write access vs read. The old probe could
  hang the system under certain conditions (e.g. unconfigured pads).
- The read/write/probe functions try to identify unconfigured bus.
- Status functions now read irqstatus_raw as per TRM guidelines
  (except for OMAP243X and OMAP34XX).
- Driver now supports up to I2C5 (OMAP5).

Signed-off-by: Lubomir Popov 
Tested-by: Heiko Schocher

i2c: zynq: Add support for Xilinx Zynq

2013-04-30T09:39:28+00:00

Support Xilinx Zynq i2c controller.

Signed-off-by: Joe Hershberger 
Signed-off-by: Michal Simek 
Acked-by: Heiko Schocher 
Reviewed-by: Tom Rini

Merge branch 'master' of git://git.denx.de/u-boot-arm

2013-03-18T18:37:18+00:00

Albert's rework of the linker scripts conflicted with Simon's making
everyone use __bss_end.  We also had a minor conflict over
README.scrapyard being added to in mainline and enhanced in
u-boot-arm/master with proper formatting.

Conflicts:
	arch/arm/cpu/ixp/u-boot.lds
	arch/arm/cpu/u-boot.lds
	arch/arm/lib/Makefile
	board/actux1/u-boot.lds
	board/actux2/u-boot.lds
	board/actux3/u-boot.lds
	board/dvlhost/u-boot.lds
	board/freescale/mx31ads/u-boot.lds
	doc/README.scrapyard
	include/configs/tegra-common.h

Build tested for all of ARM and run-time tested on am335x_evm.

Signed-off-by: Tom Rini

Tegra: I2C: Add T114 clock support to tegra_i2c driver

2013-03-14T18:06:41+00:00

T114 has a slightly different I2C clock, with a new (extra) divisor
in standard/fast mode and HS mode. Tested on my Dalmore, and the I2C
clock is 100KHz +/- 3Hz on my Saleae Logic analyzer.

Added a new entry in compat_names for T114 I2C since it differs
from the previous Tegra SoCs. A flag is set when T114 I2C HW is
found so new features like the extra clock divisor can be used.

Signed-off-by: Tom Warren 
Acked-by: Laxman Dewangan

I2C: S3C24X0: Bug fixes in i2c_transfer

2013-03-12T18:33:11+00:00

This patch corrects the following issues

1) Write the correct M/T Stop value to I2CSTAT after i2c write.
   According to the spec, after finish the data transmission, we should
   write a M/T Stop (I2C_MODE_MT | I2C_TXRX_ENA) to I2CSTAT instead of
   a M/R Stop (I2C_MODE_MR | I2C_TXRX_ENA).
2) Not split the write to I2CSTAT into 2 steps in i2c read.
   According to the spec, we should write the combined M/R Start value to
   I2CSTAT after setting the slave address to I2CDS
3) Fix the mistake of making an equality check to an assignment.
   In the case of I2C write with the zero-length address, while tranfering the
   data, it should be an equality check (==) instead of an assignment (=).

Signed-off-by: Tom Wai-Hong Tam 
Signed-off-by: Rajeshwari Shinde

I2C: S3C24X0: Remove the dead code

2013-03-12T18:32:41+00:00

This revomes the code under #if 0 in the s3c24x0_i2c driver.

Signed-off-by: Alim Akhtar 
Signed-off-by: Rajeshwari Shinde 
Acked-by: Simon Glass

ppc: m68k: Move i2c1_clk, i2c2_clk to arch_global_data

2013-02-04T14:05:42+00:00

Move these fields into arch_global_data and tidy up. This is needed for
both ppc and m68k since they share the i2c driver.

Signed-off-by: Simon Glass