b276a3bfb0
Changed the GPIO matrix and direct GPIO key scan drivers to do a single read per port instead of one read per pin. This is much more efficient for some types of GPIO drivers, such as I2C GPIO expanders. To accomplish this with minimal overhead, we now sort input pins by port at driver init. if we iterate through the pins in the sorted order, all pins on the same port are consecutive, so we only need to read each port once the first time we see it.
13 lines
712 B
CMake
13 lines
712 B
CMake
# Copyright (c) 2020 The ZMK Contributors
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# SPDX-License-Identifier: MIT
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zephyr_library_named(zmk__drivers__kscan)
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zephyr_library_include_directories(${CMAKE_SOURCE_DIR}/include)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DRIVER debounce.c)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DRIVER kscan_gpio.c)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_MATRIX kscan_gpio_matrix.c)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DIRECT kscan_gpio_direct.c)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DEMUX kscan_gpio_demux.c)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_MOCK_DRIVER kscan_mock.c)
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zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_COMPOSITE_DRIVER kscan_composite.c)
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