The following series removes cpu_...() usage completely from the
omap-i2c driver by having decisions about functional implementation
choices in the SoC held in cpu-specific hwmod tables that are
already established, or for OMAP1 where there is no hwmod, set at
OMAP1-specific i2c bus addition time.
Along the way it solves two issues with the existing implementation,
that only 16-bit accesses are documented to be allowed to the I2C
peripheral unit, and that due to a confusion in the existing driver
about whether it is faced with a newer IP version on OMAP3530, currently
it writes to a random non-existent I2C register at times on that
platform.
The patch series is quite extended from the first try thanks to
comments from Benoit Cousson.
Patches are tested on OMAP3530 and OMAP4430 I have but will need
confirming they don't break anything on OMAP1xxx and OMAP2xxx as
agreed with Benoit.
Cc: patches@xxxxxxxxxx
Cc: Ben Dooks <ben-linux@xxxxxxxxx>
Reported-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
---
Andy Green (18):
I2C: OMAP1/OMAP2+: prepend I2C IP version to probed version shown in dev_info
I2C: OMAP2+: Convert omap I2C driver to use feature implementation flags from platform data
I2C: OMAP1: set i2c unit feature implementation flags in platform data
I2C: OMAP2+: add correct functionality flags to all omap2plus i2c dev_attr
I2C: OMAP1/OMAP2+: create omap I2C functionality flags for each cpu_... test
I2C: OMAP2+: Pass flags up to omap i2c platform_data as well
I2C: OMAP1/OMAP2+: add flags field to omap i2c platform data
I2C: OMAP2+: increase omap_i2c_dev_attr flags from u8 to u32
I2C: OMAP2+: address confused probed version naming
I2C: OMAP2+: Solve array bounds overflow error on i2c idle
I2C: OMAP2+: use platform_data ip revision to select register map
I2C: OMAP2+: Pass hwmod rev knowledge via platform_data when i2c bus added
I2C: OMAP1: set IP revision in platform data
I2C: OMAP: add rev to omap i2c platform data
I2C: OMAP2+: Tag all OMAP2+ hwmod defintions with I2C IP revision
I2C: OMAP2+: Introduce I2C IP versioning constants
I2C: OMAP2+: Name registers in I2C IP V2 only accordingly
I2C: OMAP2+: Set hwmod flags to only allow 16-bit accesses to i2c
arch/arm/mach-omap2/omap_hwmod_2420_data.c | 8 ++
arch/arm/mach-omap2/omap_hwmod_2430_data.c | 6 ++
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 13 ++++
arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 18 ++++-
arch/arm/plat-omap/i2c.c | 27 ++++++++
arch/arm/plat-omap/include/plat/i2c.h | 3 +
drivers/i2c/busses/i2c-omap.c | 98 +++++++++++++++-------------
include/linux/i2c-omap.h | 29 ++++++++
8 files changed, 151 insertions(+), 51 deletions(-)
--
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