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feat: Add keyboard physical layout system.

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* Add bindings to allow creating multiple physical layouts that specify
  their key's physical attributes, and the matching matrix transform
  and dependant kscan to use.
* Synthesize a basic physical layout if none specified, for backwards
  compatibility.
* Update matrix transform API to explicitly pass in the selected transform
  to the API instead of using a fixed chosen transform.
* Move kscan subscription and handling into the physical layout code, so
  that selecting a different physical layout at runtime can also use the
  correct kscan instance.
* Add `physical_layouts.dtsi` file to include so you can use the
  pre-configured `&key_physical_attrs` for adding you layout keys.
This commit is contained in:
Peter Johanson
2024-04-24 18:14:02 -07:00
committed by Pete Johanson
parent 80173f8ea3
commit c5cca5b34f
13 changed files with 604 additions and 141 deletions
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18
app/include/zmk/matrix.h
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@@ -9,15 +9,25 @@
#include <zephyr/devicetree.h>
#define ZMK_MATRIX_NODE_ID DT_CHOSEN(zmk_kscan)
#define ZMK_MATRIX_HAS_TRANSFORM DT_HAS_CHOSEN(zmk_matrix_transform)
#if DT_HAS_CHOSEN(zmk_matrix_transform)
#if DT_HAS_COMPAT_STATUS_OKAY(zmk_physical_layout)
#if ZMK_MATRIX_HAS_TRANSFORM
#error "To use physical layouts, remove the chosen `zmk,matrix-transform` value."
#endif
#define ZMK_PHYSICAL_LAYOUT_BYTE_ARRAY(node_id) \
uint8_t _CONCAT(prop_, node_id)[DT_PROP_LEN(DT_PHANDLE(node_id, transform), map)];
#define ZMK_KEYMAP_LEN \
sizeof(union {DT_FOREACH_STATUS_OKAY(zmk_physical_layout, ZMK_PHYSICAL_LAYOUT_BYTE_ARRAY)})
#elif ZMK_MATRIX_HAS_TRANSFORM
#define ZMK_KEYMAP_TRANSFORM_NODE DT_CHOSEN(zmk_matrix_transform)
#define ZMK_KEYMAP_LEN DT_PROP_LEN(ZMK_KEYMAP_TRANSFORM_NODE, map)
#define ZMK_MATRIX_ROWS DT_PROP(ZMK_KEYMAP_TRANSFORM_NODE, rows)
#define ZMK_MATRIX_COLS DT_PROP(ZMK_KEYMAP_TRANSFORM_NODE, columns)
#else /* DT_HAS_CHOSEN(zmk_matrix_transform) */
#if DT_NODE_HAS_PROP(ZMK_MATRIX_NODE_ID, row_gpios)