input: Add the keycode translation tables separately

Require the caller to add the keycode translation tables separately so that
it can select which ones to use. In a later patch we will add the option to
add German tables.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

board/kosagi/novena/novena.c

@@ -88,6 +88,7 @@ int drv_keyboard_init(void)
 		debug("%s: Cannot set up input\n", __func__);
 		return -1;
 	}
+	input_add_tables(&button_input);
 	button_input.read_keys = novena_gpio_button_read_keys;
 
 	error = input_stdio_register(&dev);

drivers/input/cros_ec_keyb.c

@@ -255,6 +255,7 @@ int drv_keyboard_init(void)
 		return -1;
 	}
 	config.input.read_keys = cros_ec_kbc_check;
+	input_add_tables(&config.input);
 
 	memset(&dev, '\0', sizeof(dev));
 	strcpy(dev.name, "cros-ec-keyb");

drivers/input/input.c

@@ -457,19 +457,27 @@ void input_set_delays(struct input_config *config, int repeat_delay_ms,
 	config->repeat_rate_ms = repeat_rate_ms;
 }
 
+int input_add_tables(struct input_config *config)
+{
+	int ret;
+
+	ret = input_add_table(config, -1, -1,
+			      kbd_plain_xlate, ARRAY_SIZE(kbd_plain_xlate));
+	if (ret)
+		return ret;
+	ret = input_add_table(config, KEY_LEFTSHIFT, KEY_RIGHTSHIFT,
+			      kbd_shift_xlate, ARRAY_SIZE(kbd_shift_xlate));
+	if (ret)
+		return ret;
+
+	return input_add_table(config, KEY_LEFTCTRL, KEY_RIGHTCTRL,
+			       kbd_ctrl_xlate, ARRAY_SIZE(kbd_ctrl_xlate));
+}
+
 int input_init(struct input_config *config, int leds)
 {
 	memset(config, '\0', sizeof(*config));
 	config->leds = leds;
-	if (input_add_table(config, -1, -1,
-			kbd_plain_xlate, ARRAY_SIZE(kbd_plain_xlate)) ||
-		input_add_table(config, KEY_LEFTSHIFT, KEY_RIGHTSHIFT,
-			kbd_shift_xlate, ARRAY_SIZE(kbd_shift_xlate)) ||
-		input_add_table(config, KEY_LEFTCTRL, KEY_RIGHTCTRL,
-			kbd_ctrl_xlate, ARRAY_SIZE(kbd_ctrl_xlate))) {
-		debug("%s: Could not add modifier tables\n", __func__);
-		return -ENOSPC;
-	}
 
 	return 0;
 }

drivers/input/tegra-kbc.c

@@ -355,6 +355,7 @@ int drv_keyboard_init(void)
 		return -1;
 	}
 	config.input.read_keys = tegra_kbc_check;
+	input_add_tables(input);
 
 	memset(&dev, '\0', sizeof(dev));
 	strcpy(dev.name, "tegra-kbc");

include/input.h

@@ -122,6 +122,16 @@ int input_stdio_register(struct stdio_dev *dev);
 void input_set_delays(struct input_config *config, int repeat_delay_ms,
 	       int repeat_rate_ms);
 
+/**
+ * Set up the key map tables
+ *
+ * This must be called after input_init() or keycode decoding will not work.
+ *
+ * @param config	Input state
+ * @return 0 if ok, -1 on error
+ */
+int input_add_tables(struct input_config *config);
+
 /**
  * Set up the input handler with basic key maps.
  *