Initial working Clueboard California Macropad w/ proton-c fixes

* Basic Clueboard Californai Macropad shield definition.
* New "direct" KSCAN driver that supports non-matrix direct
  wiring for switches, needed for macropad that doesn't have
  a matrix at all.
* Some renames for existing KSCAN GPIO driver to make the implied
  "matrix" part explicit.

app/boards/arm/planck/planck_rev6.dts

@@ -55,7 +55,7 @@
 	};
 
 	kscan {
-		compatible = "gpio-kscan";
+		compatible = "zmk,kscan-gpio-matrix";
 		label = "Keyscan Matrix";
 		row-gpios = <&gpioa 10 GPIO_ACTIVE_HIGH>,
 			       <&gpioa 9 GPIO_ACTIVE_HIGH>,

app/boards/arm/proton_c/board.cmake

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: MIT
 
-board_runner_args(jlink "--device=STM32F303VC" "--speed=4000")
+board_runner_args(dfu-util "--pid=0483:df11" "--alt=0" "--dfuse")
+board_runner_args(jlink "--device=STM32F303CC" "--speed=4000")
 
-include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/dfu-util.board.cmake)
 include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

app/boards/shields/clueboard_california/Kconfig.defconfig

@@ -0,0 +1,14 @@
+
+if SHIELD_CLUEBOARD_CALIFORNIA
+
+config ZMK_KEYBOARD_NAME
+	default "Clueboard California Macropad"
+
+# Unable to use interrupts as the same pin number is used
+# across A & B controllers, and STM32F303CCT6 can't enable
+# interrutps for multiple controllers for the same "line"
+# for the external interrupts.
+config ZMK_KSCAN_GPIO_POLLING
+	default y
+
+endif

app/boards/shields/clueboard_california/Kconfig.shield

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 Pete Johanson
+# SPDX-License-Identifier: MIT
+
+config SHIELD_CLUEBOARD_CALIFORNIA
+	def_bool $(shields_list_contains,clueboard_california)

app/boards/shields/clueboard_california/clueboard_california.overlay

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2020 Pete Johanson
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/ {
+	chosen {
+		zmk,kscan = &kscan0;
+	};
+
+	kscan0: kscan_0 {
+		compatible = "zmk,kscan-gpio-direct";
+
+		label = "KSCAN";
+
+		input-gpios
+			= <&gpioa 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpioa 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpioa 0 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpiob 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpiob 11 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpiob 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpioa 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpioa 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpiob 1 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			, <&gpiob 2 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+			;
+
+	};
+
+	// TODO: Per-key LED node(s)
+};
+

app/boards/shields/clueboard_california/keymap/keymap.overlay

@@ -0,0 +1,24 @@
+#include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/matrix-transform.h>
+#include <keymap.h>
+
+/ {
+	chosen {
+		zmk,keymap = &keymap0;
+	};
+	
+	keymap0: keymap {
+		compatible = "zmk,keymap";
+		label ="Default Kyria Keymap";
+		layers = <&default>;
+	};
+
+	layers {
+		compatible = "zmk,layers";
+
+		default: layer_0 {
+			label = "DEFAULT";
+			keys = <KC_9 KC_8 KC_7 KC_6 KC_5 KC_4 KC_3 KC_2 KC_1 KC_0>;
+		};
+	};
+};

app/boards/shields/clueboard_california/readme.md

@@ -0,0 +1,24 @@
+# Clueboard California Macropad
+
+A small 10-key macropad in the shape of the US state of California,
+
+## Features
+
+* Per key LED.
+* Proton-C compatible, including space for the piezo speaker.
+* Direct GPIO wiring, no GPIO matrix at all.
+
+Will need to set them to be PULL HIGH, and ACTIVE LOW
+
+| Switch       | Switch Pin | LED Pin |
+| ------------ | ---------- | ------- |
+| shasta1      | a10        | a2      |
+| modoc1       | a9         | b5      |
+| mendocino1   | a0         | a1      |
+| lassen1      | b8         | b4      |
+| eldorado1    | b11        | b12     |
+| big_sur1     | b9         | b10     |
+| sierra1      | a8         | a15     |
+| los_padres1  | a7         | a6      |
+| mojave1      | b1         | b0      |
+| joshua_tree1 | b2         | b3      |

app/boards/shields/kyria/kyria.overlay

@@ -29,7 +29,7 @@
 	};
 
 	kscan_left: kscan_left {
-		compatible = "gpio-kscan";
+		compatible = "zmk,kscan-gpio-matrix";
 		label = "KSCAN_LEFT";
 
 		diode-direction = "row2col";
@@ -49,7 +49,7 @@
 	};
 
 	kscan_right: kscan_right {
-		compatible = "gpio-kscan";
+		compatible = "zmk,kscan-gpio-matrix";
 		label = "KSCAN_RIGHT";
 
 		diode-direction = "row2col";

app/boards/shields/petejohanson_handwire/petejohanson_handwire.overlay

@@ -21,7 +21,7 @@
 	};
 
 	left_hand: kscan_1 {
-		compatible = "gpio-kscan";
+		compatible = "zmk,kscan-gpio-matrix";
 		label = "KSCAN_LEFT";
 
 		diode-direction = "row2col";
@@ -32,7 +32,7 @@
 	};
 
 	right_hand: kscan_2 {
-		compatible = "gpio-kscan";
+		compatible = "zmk,kscan-gpio-matrix";
 		label = "KSCAN_RIGHT";
 
 		diode-direction = "row2col";

app/boards/shields/petejohanson_proton_handwire/petejohanson_proton_handwire.overlay

@@ -5,7 +5,7 @@
 	};
 
 	kscan0: kscan {
-		compatible = "gpio-kscan";
+		compatible = "zmk,kscan-gpio-matrix";
 		label = "KSCAN";
 
 		diode-direction = "row2col";

app/drivers/zephyr/CMakeLists.txt

@@ -4,6 +4,7 @@ if(CONFIG_ZMK_KSCAN_GPIO_DRIVER)
 
   zephyr_library()
   zephyr_library_sources(
-    kscan_gpio.c
+    kscan_gpio_matrix.c
+    kscan_gpio_direct.c
     )
 endif()

app/drivers/zephyr/Kconfig

@@ -3,6 +3,14 @@ config ZMK_KSCAN_GPIO_DRIVER
 	default y
 	select GPIO
 
+if ZMK_KSCAN_GPIO_DRIVER
+
+config ZMK_KSCAN_GPIO_POLLING
+	bool "Poll for key event triggers instead of using interrupts"
+	default n
+
+endif
+
 config ZMK_KSCAN_INIT_PRIORITY
 	int "Keyboard scan driver init priority"
 	default 40

app/drivers/zephyr/dts/bindings/zmk,kscan-gpio-matrix.yaml

@@ -3,7 +3,7 @@
 
 description: GPIO keyboard matrix controller
 
-compatible: "gpio-kscan"
+compatible: "zmk,kscan-gpio-matrix"
 
 include: kscan.yaml
 

app/drivers/zephyr/kscan_gpio_matrix.c

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: MIT
  */
 
-#define DT_DRV_COMPAT gpio_kscan
+#define DT_DRV_COMPAT zmk_kscan_gpio_matrix
 
 #include <device.h>
 #include <drivers/kscan.h>
@@ -13,6 +13,8 @@
 
 LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
 
+#if DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT)
+
 struct kscan_gpio_item_config
 {
 	char *label;
@@ -254,3 +256,5 @@ static int kscan_gpio_config_interrupts(struct device **devices,
 						&gpio_driver_api_##n);
 
 DT_INST_FOREACH_STATUS_OKAY(GPIO_INST_INIT)
+
+#endif /* DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT) */

app/include/zmk/matrix.h

@@ -5,6 +5,9 @@
 #if DT_NODE_HAS_PROP(ZMK_MATRIX_NODE_ID,row_gpios)
 #define ZMK_MATRIX_ROWS DT_PROP_LEN(ZMK_MATRIX_NODE_ID,row_gpios)
 #define ZMK_MATRIX_COLS DT_PROP_LEN(ZMK_MATRIX_NODE_ID,col_gpios)
+#elif DT_NODE_HAS_PROP(ZMK_MATRIX_NODE_ID,input_gpios)
+#define ZMK_MATRIX_ROWS 1
+#define ZMK_MATRIX_COLS DT_PROP_LEN(ZMK_MATRIX_NODE_ID,input_gpios)
 #else
 #define ZMK_MATRIX_ROWS DT_PROP(ZMK_MATRIX_NODE_ID,rows)
 #define ZMK_MATRIX_COLS DT_PROP(ZMK_MATRIX_NODE_ID,columns)