Changes in v2: - Utilize bitmap_zero macro to clear bits array - Refactor bitwise operations and loop structure for clarity - Implement set_multiple callback for PCIe-IDIO-16 driver
This patchset implements get_multiple callbacks for the PC104 GPIO drivers as well as the PCI-IDIO-16 and PCIe-IDIO-24 GPIO drivers. These devices all acquire the multiple input lines with a single read, so utilizing the get_multiple callback can provide improvement for those users who regularly access multiple input lines. While developing this patchset I noticed many of these devices make use of Intel 8255 compatible interfaces for their I/O. I may write a generic 8255 GPIO driver in the future to reduce some of the redundant code I see pop among the drivers for these devices. William Breathitt Gray (8): iio: stx104: Implement get_multiple callback gpio: 104-idio-16: Implement get_multiple callback gpio: pci-idio-16: Implement get_multiple callback gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks gpio: 104-dio-48e: Implement get_multiple callback gpio: 104-idi-48: Implement get_multiple callback gpio: gpio-mm: Implement get_multiple callback gpio: ws16c48: Implement get_multiple callback drivers/gpio/gpio-104-dio-48e.c | 46 +++++++++++++++ drivers/gpio/gpio-104-idi-48.c | 46 +++++++++++++++ drivers/gpio/gpio-104-idio-16.c | 15 +++++ drivers/gpio/gpio-gpio-mm.c | 46 +++++++++++++++ drivers/gpio/gpio-pci-idio-16.c | 50 +++++++++++++++++ drivers/gpio/gpio-pcie-idio-24.c | 118 +++++++++++++++++++++++++++++++++++++++ drivers/gpio/gpio-ws16c48.c | 46 +++++++++++++++ drivers/iio/adc/stx104.c | 11 ++++ 8 files changed, 378 insertions(+) -- 2.16.2
