The PC104/ISA drivers were updated to use I/O memory accessor calls such as ioread8()/iowrite8() in a previous patch series [1]. This patchset is a continuation of the effort to improve the code readability and reduce magic numbers by implementing and utilizing named register data structures. One of the benefits is that we can now observe more easily similarities in devices that share similar interfaces; such as the i8255 interfaces used by the 104-DIO-48E, 104-IDI-48, and GPIO-MM drivers -- as well as the similar interface used by the 104-IDIO-16 and PCI-IDIO-16 drivers. I hope to consolidate some of these code blocks in future patchsets. [1] https://lore.kernel.org/all/cover.1652201921.git.william.gray@xxxxxxxxxx/ William Breathitt Gray (5): gpio: 104-dio-48e: Implement and utilize register structures gpio: 104-idi-48: Implement and utilize register structures gpio: 104-idio-16: Implement and utilize register structures gpio: gpio-mm: Implement and utilize register structures gpio: ws16c48: Implement and utilize register structures drivers/gpio/gpio-104-dio-48e.c | 157 +++++++++++++++++++++----------- drivers/gpio/gpio-104-idi-48.c | 128 +++++++++++++------------- drivers/gpio/gpio-104-idio-16.c | 58 ++++++++---- drivers/gpio/gpio-gpio-mm.c | 116 ++++++++++++++--------- drivers/gpio/gpio-ws16c48.c | 119 +++++++++++++++++------- 5 files changed, 366 insertions(+), 212 deletions(-) base-commit: f2906aa863381afb0015a9eb7fefad885d4e5a56 -- 2.36.1