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Initial composite kscan driver.

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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.
This commit is contained in:
Pete Johanson
2020-05-27 00:48:03 -04:00
parent abd106032d
commit 9a09eb14af
9 changed files with 291 additions and 82 deletions
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2
boards/shields/petejohanson_handwire/Kconfig.defconfig
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@@ -0,0 +1,2 @@
CONFIG_ZMK_KSCAN_COMPOSITE_DRIVER=y

37
boards/shields/petejohanson_handwire/petejohanson_handwire.overlay
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@@ -4,14 +4,41 @@
zmk,kscan = &kscan0;
};
kscan0: kscan {
kscan0: kscan_0 {
compatible = "zmk,kscan-composite";
label = "KSCAN_COMP";
rows = <2>;
columns = <4>;
left {
kscan = <&left_hand>;
};
right {
kscan = <&right_hand>;
column-offset = <2>;
};
};
left_hand: kscan_1 {
compatible = "gpio-kscan";
label = "KSCAN";
label = "KSCAN_LEFT";
diode-direction = "row2col";
row-gpios = <&arduino_header 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
<&arduino_header 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
col-gpios = <&arduino_header 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
<&arduino_header 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
<&arduino_header 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
col-gpios = <&arduino_header 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
<&arduino_header 11 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
};
right_hand: kscan_2 {
compatible = "gpio-kscan";
label = "KSCAN_RIGHT";
diode-direction = "row2col";
row-gpios = <&arduino_header 12 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
<&arduino_header 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
col-gpios = <&arduino_header 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
<&arduino_header 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
};
};