extcon: arizona: Add support for WM8998 and WM1814

This patch adds support for the WM8998 and WM1814 codecs.
These use the same IP version as WM5110 but have different
clamp control.
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/extcon/extcon-arizona.c

 /*
  * extcon-arizona.c - Extcon driver Wolfson Arizona devices
  *
- *  Copyright (C) 2012 Wolfson Microelectronics plc
+ *  Copyright (C) 2012-2014 Wolfson Microelectronics plc
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -154,6 +154,10 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
 	int ret;
 
 	switch (arizona->type) {
+	case WM8998:
+	case WM1814:
+		mask = 0;
+		break;
 	case WM5110:
 	case WM8280:
 		mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
@@ -197,17 +201,19 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
 				 ret);
 	}
 
-	ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
-				 mask, val);
-	if (ret != 0)
-		dev_warn(arizona->dev, "Failed to do clamp: %d\n",
+	if (mask) {
+		ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
+					 mask, val);
+		if (ret != 0)
+			dev_warn(arizona->dev, "Failed to do clamp: %d\n",
 				 ret);
 
-	ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
-				 mask, val);
-	if (ret != 0)
-		dev_warn(arizona->dev, "Failed to do clamp: %d\n",
-			 ret);
+		ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
+					 mask, val);
+		if (ret != 0)
+			dev_warn(arizona->dev, "Failed to do clamp: %d\n",
+				 ret);
+	}
 
 	/* Restore the desired state while not doing the clamp */
 	if (!clamp) {
@@ -1289,6 +1295,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
 			break;
 		}
 		break;
+	case WM8998:
+	case WM1814:
+		info->micd_clamp = true;
+		info->hpdet_ip_version = 2;
+		break;
 	default:
 		break;
 	}