cros_ec: Update the cros_ec keyboard driver to livetree

Update this driver and key_matrix to support a live device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/input/cros_ec_keyb.c

@@ -10,7 +10,6 @@
 #include <cros_ec.h>
 #include <dm.h>
 #include <errno.h>
-#include <fdtdec.h>
 #include <input.h>
 #include <keyboard.h>
 #include <key_matrix.h>
@@ -161,15 +160,15 @@ int cros_ec_kbc_check(struct input_config *input)
  * @param config	Configuration data read from fdt
  * @return 0 if ok, -1 on error
  */
-static int cros_ec_keyb_decode_fdt(const void *blob, int node,
-				struct cros_ec_keyb_priv *config)
+static int cros_ec_keyb_decode_fdt(struct udevice *dev,
+				   struct cros_ec_keyb_priv *config)
 {
 	/*
 	 * Get keyboard rows and columns - at present we are limited to
 	 * 8 columns by the protocol (one byte per row scan)
 	 */
-	config->key_rows = fdtdec_get_int(blob, node, "keypad,num-rows", 0);
-	config->key_cols = fdtdec_get_int(blob, node, "keypad,num-columns", 0);
+	config->key_rows = dev_read_u32_default(dev, "keypad,num-rows", 0);
+	config->key_cols = dev_read_u32_default(dev, "keypad,num-columns", 0);
 	if (!config->key_rows || !config->key_cols ||
 			config->key_rows * config->key_cols / 8
 				> CROS_EC_KEYSCAN_COLS) {
@@ -177,8 +176,8 @@ static int cros_ec_keyb_decode_fdt(const void *blob, int node,
 		      config->key_rows, config->key_cols);
 		return -1;
 	}
-	config->ghost_filter = fdtdec_get_bool(blob, node,
-					       "google,needs-ghost-filter");
+	config->ghost_filter = dev_read_bool(dev, "google,needs-ghost-filter");
+
 	return 0;
 }
 
@@ -188,12 +187,13 @@ static int cros_ec_kbd_probe(struct udevice *dev)
 	struct keyboard_priv *uc_priv = dev_get_uclass_priv(dev);
 	struct stdio_dev *sdev = &uc_priv->sdev;
 	struct input_config *input = &uc_priv->input;
-	const void *blob = gd->fdt_blob;
-	int node = dev_of_offset(dev);
 	int ret;
 
-	if (cros_ec_keyb_decode_fdt(blob, node, priv))
-		return -1;
+	ret = cros_ec_keyb_decode_fdt(dev, priv);
+	if (ret) {
+		debug("%s: Cannot decode node (ret=%d)\n", __func__, ret);
+		return -EINVAL;
+	}
 	input_set_delays(input, KBC_REPEAT_DELAY_MS, KBC_REPEAT_RATE_MS);
 	ret = key_matrix_init(&priv->matrix, priv->key_rows, priv->key_cols,
 			      priv->ghost_filter);
@@ -201,7 +201,7 @@ static int cros_ec_kbd_probe(struct udevice *dev)
 		debug("%s: cannot init key matrix\n", __func__);
 		return ret;
 	}
-	ret = key_matrix_decode_fdt(&priv->matrix, gd->fdt_blob, node);
+	ret = key_matrix_decode_fdt(dev, &priv->matrix);
 	if (ret) {
 		debug("%s: Could not decode key matrix from fdt\n", __func__);
 		return ret;

drivers/input/key_matrix.c

@@ -8,7 +8,7 @@
  */
 
 #include <common.h>
-#include <fdtdec.h>
+#include <dm.h>
 #include <key_matrix.h>
 #include <malloc.h>
 #include <linux/input.h>
@@ -105,7 +105,7 @@ int key_matrix_decode(struct key_matrix *config, struct key_matrix_key keys[],
  * @param pos           Returns position of map_keycode, if found, else -1
  * @return map  Pointer to allocated map
  */
-static uchar *create_keymap(struct key_matrix *config, u32 *data, int len,
+static uchar *create_keymap(struct key_matrix *config, const u32 *data, int len,
 			    int map_keycode, int *pos)
 {
 	uchar *map;
@@ -138,33 +138,32 @@ static uchar *create_keymap(struct key_matrix *config, u32 *data, int len,
 	return map;
 }
 
-int key_matrix_decode_fdt(struct key_matrix *config, const void *blob, int node)
+int key_matrix_decode_fdt(struct udevice *dev, struct key_matrix *config)
 {
-	const struct fdt_property *prop;
+	const u32 *prop;
 	int proplen;
 	uchar *plain_keycode;
 
-	prop = fdt_get_property(blob, node, "linux,keymap", &proplen);
+	prop = dev_read_prop(dev, "linux,keymap", &proplen);
 	/* Basic keymap is required */
 	if (!prop) {
 		debug("%s: cannot find keycode-plain map\n", __func__);
 		return -1;
 	}
 
-	plain_keycode = create_keymap(config, (u32 *)prop->data,
-		proplen, KEY_FN, &config->fn_pos);
+	plain_keycode = create_keymap(config, prop, proplen, KEY_FN,
+				      &config->fn_pos);
 	config->plain_keycode = plain_keycode;
 	/* Conversion error -> fail */
 	if (!config->plain_keycode)
 		return -1;
 
-	prop = fdt_get_property(blob, node, "linux,fn-keymap", &proplen);
+	prop = dev_read_prop(dev, "linux,fn-keymap", &proplen);
 	/* fn keymap is optional */
 	if (!prop)
 		goto done;
 
-	config->fn_keycode = create_keymap(config, (u32 *)prop->data,
-		proplen, -1, NULL);
+	config->fn_keycode = create_keymap(config, prop, proplen, -1, NULL);
 	/* Conversion error -> fail */
 	if (!config->fn_keycode) {
 		free(plain_keycode);

drivers/input/tegra-kbc.c

@@ -290,7 +290,6 @@ static int tegra_kbd_probe(struct udevice *dev)
 	struct keyboard_priv *uc_priv = dev_get_uclass_priv(dev);
 	struct stdio_dev *sdev = &uc_priv->sdev;
 	struct input_config *input = &uc_priv->input;
-	int node = dev_of_offset(dev);
 	int ret;
 
 	priv->kbc = (struct kbc_tegra *)devfdt_get_addr(dev);
@@ -306,7 +305,7 @@ static int tegra_kbd_probe(struct udevice *dev)
 		debug("%s: Could not init key matrix: %d\n", __func__, ret);
 		return ret;
 	}
-	ret = key_matrix_decode_fdt(&priv->matrix, gd->fdt_blob, node);
+	ret = key_matrix_decode_fdt(dev, &priv->matrix);
 	if (ret) {
 		debug("%s: Could not decode key matrix from fdt: %d\n",
 		      __func__, ret);

include/key_matrix.h

@@ -69,8 +69,7 @@ int key_matrix_decode(struct key_matrix *config, struct key_matrix_key *keys,
  * @param node          Node containing compatible data
  * @return 0 if ok, -1 on error
  */
-int key_matrix_decode_fdt(struct key_matrix *config, const void *blob,
-			  int node);
+int key_matrix_decode_fdt(struct udevice *dev, struct key_matrix *config);
 
 /**
  * Set up a new key matrix.