On Thu, Nov 03, 2022 at 07:20:46AM -0400, William Breathitt Gray wrote: > The regmap API supports IO port accessors so we can take advantage of > regmap abstractions rather than handling access to the device registers > directly in the driver. > > Precursor patches are provided for 104-dio-48e and 104-idi-48 to migrate > their respective device-specific registers first in order to simplify > the subsequent patch migrating the i8255 library and its dependents. > > The struct i8255 control_state member serves as a cache of the i8255 > device's control register. Does the regmap API support caching such that > we won't need to manually update a control_state member? Yes, regmap supports caching and IIRC it's opt-out. > William Breathitt Gray (3): > gpio: 104-dio-48e: Migrate to regmap API > gpio: 104-idi-48: Migrate to regmap API > gpio: i8255: Migrate to regmap API > > drivers/gpio/gpio-104-dio-48e.c | 200 +++++++++++++++++++---------- > drivers/gpio/gpio-104-idi-48.c | 110 +++++++++++----- > drivers/gpio/gpio-gpio-mm.c | 97 ++++++++++---- > drivers/gpio/gpio-i8255.c | 218 +++++++++++++++++++++----------- > drivers/gpio/gpio-i8255.h | 54 ++++---- > 5 files changed, 451 insertions(+), 228 deletions(-) > > > base-commit: b8b80348c57b360019071e17380298619c5d8066 > -- > 2.37.3 > -- With Best Regards, Andy Shevchenko