113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#define DT_DRV_COMPAT zmk_kscan_composite
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#include <device.h>
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#include <drivers/kscan.h>
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#include <logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#define MATRIX_NODE_ID DT_DRV_INST(0)
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#define MATRIX_ROWS DT_PROP(MATRIX_NODE_ID, rows)
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#define MATRIX_COLS DT_PROP(MATRIX_NODE_ID, columns)
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struct kscan_composite_child_config {
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char *label;
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u8_t row_offset;
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u8_t column_offset;
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};
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#define CHILD_CONFIG(inst) \
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{.label = DT_LABEL(DT_PHANDLE(inst, kscan)), \
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.row_offset = DT_PROP(inst, row_offset), \
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.column_offset = DT_PROP(inst, column_offset)},
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const struct kscan_composite_child_config kscan_composite_children[] = {
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DT_FOREACH_CHILD(MATRIX_NODE_ID, CHILD_CONFIG)};
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struct kscan_composite_config {};
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struct kscan_composite_data {
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kscan_callback_t callback;
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struct device *dev;
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};
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static int kscan_composite_enable_callback(struct device *dev) {
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for (int i = 0; i < ARRAY_SIZE(kscan_composite_children); i++) {
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const struct kscan_composite_child_config *cfg = &kscan_composite_children[i];
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kscan_enable_callback(device_get_binding(cfg->label));
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}
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return 0;
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}
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static int kscan_composite_disable_callback(struct device *dev) {
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for (int i = 0; i < ARRAY_SIZE(kscan_composite_children); i++) {
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const struct kscan_composite_child_config *cfg = &kscan_composite_children[i];
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kscan_disable_callback(device_get_binding(cfg->label));
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}
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return 0;
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}
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static void kscan_composite_child_callback(struct device *child_dev, u32_t row, u32_t column,
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bool pressed) {
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// TODO: Ideally we can get this passed into our callback!
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struct device *dev = device_get_binding(DT_INST_LABEL(0));
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struct kscan_composite_data *data = dev->driver_data;
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for (int i = 0; i < ARRAY_SIZE(kscan_composite_children); i++) {
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const struct kscan_composite_child_config *cfg = &kscan_composite_children[i];
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if (device_get_binding(cfg->label) != child_dev) {
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continue;
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}
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data->callback(dev, row + cfg->row_offset, column + cfg->column_offset, pressed);
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}
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}
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static int kscan_composite_configure(struct device *dev, kscan_callback_t callback) {
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struct kscan_composite_data *data = dev->driver_data;
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if (!callback) {
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return -EINVAL;
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}
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for (int i = 0; i < ARRAY_SIZE(kscan_composite_children); i++) {
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const struct kscan_composite_child_config *cfg = &kscan_composite_children[i];
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kscan_config(device_get_binding(cfg->label), &kscan_composite_child_callback);
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}
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data->callback = callback;
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return 0;
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}
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static int kscan_composite_init(struct device *dev) {
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struct kscan_composite_data *data = dev->driver_data;
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data->dev = dev;
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return 0;
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}
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static const struct kscan_driver_api mock_driver_api = {
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.config = kscan_composite_configure,
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.enable_callback = kscan_composite_enable_callback,
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.disable_callback = kscan_composite_disable_callback,
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};
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static const struct kscan_composite_config kscan_composite_config = {};
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static struct kscan_composite_data kscan_composite_data;
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DEVICE_AND_API_INIT(kscan_composite, DT_INST_LABEL(0), kscan_composite_init, &kscan_composite_data,
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&kscan_composite_config, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
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&mock_driver_api);
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