[PATCH 3/5] Input: pinephone-keyboard - Build in the default keymap

[Samuel Holland <samuel@sholland.org>]

The PinePhone keyboard comes with removable keys, but there is a default
layout labeled from the factory. Use this keymap if none is provided in
the devicetree.

Suggested-by: Ondrej Jirman <x@xff.cz>
Signed-off-by: Samuel Holland <samuel@sholland.org>
---

 drivers/input/keyboard/pinephone-keyboard.c | 128 +++++++++++++++++++-
 1 file changed, 123 insertions(+), 5 deletions(-)

diff --git a/drivers/input/keyboard/pinephone-keyboard.c b/drivers/input/keyboard/pinephone-keyboard.c
index 9a071753fd91..8065bc3e101a 100644
--- a/drivers/input/keyboard/pinephone-keyboard.c
+++ b/drivers/input/keyboard/pinephone-keyboard.c
@@ -24,6 +24,113 @@
 #define PPKB_SYS_CONFIG			0x20
 #define PPKB_SYS_CONFIG_DISABLE_SCAN		BIT(0)
 
+#define PPKB_DEFAULT_KEYMAP_ROWS	6
+#define PPKB_DEFAULT_KEYMAP_COLS	12
+
+static const uint32_t ppkb_default_fn_keymap[] = {
+	KEY(0,  0, KEY_FN_ESC),
+	KEY(0,  1, KEY_F1),
+	KEY(0,  2, KEY_F2),
+	KEY(0,  3, KEY_F3),
+	KEY(0,  4, KEY_F4),
+	KEY(0,  5, KEY_F5),
+	KEY(0,  6, KEY_F6),
+	KEY(0,  7, KEY_F7),
+	KEY(0,  8, KEY_F8),
+	KEY(0,  9, KEY_F9),
+	KEY(0, 10, KEY_F10),
+	KEY(0, 11, KEY_DELETE),
+
+	KEY(2,  0, KEY_SYSRQ),
+	KEY(2, 10, KEY_INSERT),
+
+	KEY(3,  0, KEY_LEFTSHIFT),
+	KEY(3,  8, KEY_HOME),
+	KEY(3,  9, KEY_UP),
+	KEY(3, 10, KEY_END),
+
+	KEY(4, 1, KEY_LEFTCTRL),
+	KEY(4, 6, KEY_LEFT),
+	KEY(4, 8, KEY_RIGHT),
+	KEY(4, 9, KEY_DOWN),
+
+	KEY(5, 2, KEY_FN),
+	KEY(5, 3, KEY_LEFTALT),
+	KEY(5, 5, KEY_RIGHTALT),
+};
+
+static const struct matrix_keymap_data ppkb_default_fn_keymap_data = {
+	.keymap		= ppkb_default_fn_keymap,
+	.keymap_size	= ARRAY_SIZE(ppkb_default_fn_keymap),
+};
+
+static const uint32_t ppkb_default_keymap[] = {
+	KEY(0,  0, KEY_ESC),
+	KEY(0,  1, KEY_1),
+	KEY(0,  2, KEY_2),
+	KEY(0,  3, KEY_3),
+	KEY(0,  4, KEY_4),
+	KEY(0,  5, KEY_5),
+	KEY(0,  6, KEY_6),
+	KEY(0,  7, KEY_7),
+	KEY(0,  8, KEY_8),
+	KEY(0,  9, KEY_9),
+	KEY(0, 10, KEY_0),
+	KEY(0, 11, KEY_BACKSPACE),
+
+	KEY(1,  0, KEY_TAB),
+	KEY(1,  1, KEY_Q),
+	KEY(1,  2, KEY_W),
+	KEY(1,  3, KEY_E),
+	KEY(1,  4, KEY_R),
+	KEY(1,  5, KEY_T),
+	KEY(1,  6, KEY_Y),
+	KEY(1,  7, KEY_U),
+	KEY(1,  8, KEY_I),
+	KEY(1,  9, KEY_O),
+	KEY(1, 10, KEY_P),
+	KEY(1, 11, KEY_ENTER),
+
+	KEY(2,  0, KEY_LEFTMETA),
+	KEY(2,  1, KEY_A),
+	KEY(2,  2, KEY_S),
+	KEY(2,  3, KEY_D),
+	KEY(2,  4, KEY_F),
+	KEY(2,  5, KEY_G),
+	KEY(2,  6, KEY_H),
+	KEY(2,  7, KEY_J),
+	KEY(2,  8, KEY_K),
+	KEY(2,  9, KEY_L),
+	KEY(2, 10, KEY_SEMICOLON),
+
+	KEY(3,  0, KEY_LEFTSHIFT),
+	KEY(3,  1, KEY_Z),
+	KEY(3,  2, KEY_X),
+	KEY(3,  3, KEY_C),
+	KEY(3,  4, KEY_V),
+	KEY(3,  5, KEY_B),
+	KEY(3,  6, KEY_N),
+	KEY(3,  7, KEY_M),
+	KEY(3,  8, KEY_COMMA),
+	KEY(3,  9, KEY_DOT),
+	KEY(3, 10, KEY_SLASH),
+
+	KEY(4,  1, KEY_LEFTCTRL),
+	KEY(4,  4, KEY_SPACE),
+	KEY(4,  6, KEY_APOSTROPHE),
+	KEY(4,  8, KEY_RIGHTBRACE),
+	KEY(4,  9, KEY_LEFTBRACE),
+
+	KEY(5,  2, KEY_FN),
+	KEY(5,  3, KEY_LEFTALT),
+	KEY(5,  5, KEY_RIGHTALT),
+};
+
+static const struct matrix_keymap_data ppkb_default_keymap_data = {
+	.keymap		= ppkb_default_keymap,
+	.keymap_size	= ARRAY_SIZE(ppkb_default_keymap),
+};
+
 struct pinephone_keyboard {
 	struct input_dev *input;
 	unsigned short *fn_keymap;
@@ -151,6 +258,8 @@ static irqreturn_t ppkb_irq_thread(int irq, void *data)
 
 static int ppkb_probe(struct i2c_client *client)
 {
+	const struct matrix_keymap_data *fn_keymap_data = &ppkb_default_fn_keymap_data;
+	const struct matrix_keymap_data *keymap_data = &ppkb_default_keymap_data;
 	struct device *dev = &client->dev;
 	unsigned int phys_rows, phys_cols;
 	unsigned int map_rows, map_cols;
@@ -176,9 +285,18 @@ static int ppkb_probe(struct i2c_client *client)
 	if (ret)
 		return ret;
 
-	ret = matrix_keypad_parse_properties(dev, &map_rows, &map_cols);
-	if (ret)
-		return ret;
+	/* Allow the devicetree to override the default keymaps. */
+	if (of_property_read_bool(dev->of_node, "linux,fn-keymap") ||
+	    of_property_read_bool(dev->of_node, "linux,keymap")) {
+		ret = matrix_keypad_parse_properties(dev, &map_rows, &map_cols);
+		if (ret)
+			return ret;
+
+		fn_keymap_data = keymap_data = NULL;
+	} else {
+		map_rows = PPKB_DEFAULT_KEYMAP_ROWS;
+		map_cols = PPKB_DEFAULT_KEYMAP_COLS;
+	}
 
 	phys_rows = info[PPKB_MATRIX_SIZE] & 0xf;
 	phys_cols = info[PPKB_MATRIX_SIZE] >> 4;
@@ -214,14 +332,14 @@ static int ppkb_probe(struct i2c_client *client)
 	__set_bit(EV_MSC, ppkb->input->evbit);
 	__set_bit(EV_REP, ppkb->input->evbit);
 
-	ret = matrix_keypad_build_keymap(NULL, "linux,fn-keymap",
+	ret = matrix_keypad_build_keymap(fn_keymap_data, "linux,fn-keymap",
 					 map_rows, map_cols, NULL, ppkb->input);
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to build FN keymap\n");
 
 	ppkb->fn_keymap = ppkb->input->keycode;
 
-	ret = matrix_keypad_build_keymap(NULL, "linux,keymap",
+	ret = matrix_keypad_build_keymap(keymap_data, "linux,keymap",
 					 map_rows, map_cols, NULL, ppkb->input);
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to build keymap\n");
-- 
2.33.1