Perform a simple rename of CONFIG_SYS_I2C_DIRECT_BUS to CFG_SYS_I2C_DIRECT_BUS

Signed-off-by: Tom Rini <trini@konsulko.com>

Perform a simple rename of CONFIG_I2C_MULTI_BUS to CFG_I2C_MULTI_BUS

Signed-off-by: Tom Rini <trini@konsulko.com>

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_NUM
namespace do not easily transition to Kconfig. In many cases they likely
should come from the device tree instead. Move these out of CONFIG
namespace and in to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

This converts the following to Kconfig:
   CONFIG_SYS_SPD_BUS_NUM

Signed-off-by: Tom Rini <trini@konsulko.com>

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

This converts the following to Kconfig:
   CONFIG_SYS_I2C_SPEED
   CONFIG_SYS_I2C_SLAVE

Signed-off-by: Tom Rini <trini@konsulko.com>

Convert SYS_I2C_EARLY_INIT to Kconfig, and make it depend on
SPL_SYS_I2C_LEGACY.  Remove the weak implementation as it's either
something that needs to exist for real, or shouldn't be called.

Signed-off-by: Tom Rini <trini@konsulko.com>

First, we convert CONFIG_SYS_I2C_LEGACY to Kconfig.  Next, as you cannot
have SYS_I2C_LEGACY and DM_I2C at the same time, introduce
CONFIG_SPL_SYS_I2C_LEGACY so that we can enable the legacy option only
in SPL.  Finally, for some PowerPC cases we also need
CONFIG_TPL_SYS_I2C_LEGACY support.  Convert all of the existing users to
one or more symbols.

Signed-off-by: Tom Rini <trini@konsulko.com>

Add function to apply a bitmask to an i2c register, so
that specific bits can be cleared and/or set.

Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>