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* For now, to be used for FrankenKyria, where both matrix halves will be attached to the same MCU, but should be a stepping stone to proper split support once we have a kscan driver over a split transport. * Implement multiple instances for mock kscan driver.xmkb
Pete Johanson
5 years ago
9 changed files with 292 additions and 83 deletions
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CONFIG_ZMK_KSCAN_COMPOSITE_DRIVER=y |
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description: | |
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Allows composing multiple KSCAN devices into one virtual device |
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compatible: "zmk,kscan-composite" |
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properties: |
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label: |
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type: string |
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rows: |
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type: int |
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columns: |
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type: int |
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child-binding: |
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description: "Details of an included KSCAN devices" |
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properties: |
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label: |
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type: string |
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kscan: |
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type: phandle |
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row-offset: |
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type: int |
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default: 0 |
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column-offset: |
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type: int |
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default: 0 |
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/*
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* Copyright (c) 2020 Peter Johanson <peter@peterjohanson.com> |
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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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{ |
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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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{ \
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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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{ |
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}; |
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struct kscan_composite_data |
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{ |
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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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{ |
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for (int i = 0; i < sizeof(kscan_composite_children) / sizeof(kscan_composite_children[0]); i++) |
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{ |
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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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{ |
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for (int i = 0; i < sizeof(kscan_composite_children) / sizeof(kscan_composite_children[0]); i++) |
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{ |
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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, bool pressed) |
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{ |
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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 < sizeof(kscan_composite_children) / sizeof(kscan_composite_children[0]); i++) |
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{ |
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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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{ |
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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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{ |
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struct kscan_composite_data *data = dev->driver_data; |
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if (!callback) |
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{ |
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return -EINVAL; |
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} |
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for (int i = 0; i < sizeof(kscan_composite_children) / sizeof(kscan_composite_children[0]); i++) |
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{ |
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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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{ |
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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, |
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&kscan_composite_data, |
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&kscan_composite_config, |
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APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, |
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&mock_driver_api); |
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