openwrt/target/linux/ipq806x/patches/0149-pinctrl-qcom-Add-BUS_HOLD-Keeper-bias.patch

From b1325bfad3ad0e543ce90a6b08d74500dc96f4b9 Mon Sep 17 00:00:00 2001
From: Andy Gross <agross@codeaurora.org>
Date: Mon, 16 Jun 2014 16:52:55 -0500
Subject: [PATCH 149/182] pinctrl: qcom: Add BUS_HOLD/Keeper bias

This patch adds the bus_hold bias option for pins.

Signed-off-by: Andy Gross <agross@codeaurora.org>
---
 drivers/pinctrl/pinctrl-msm.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/pinctrl/pinctrl-msm.c
+++ b/drivers/pinctrl/pinctrl-msm.c
@@ -207,6 +207,7 @@ static int msm_config_reg(struct msm_pin
 	case PIN_CONFIG_BIAS_DISABLE:
 	case PIN_CONFIG_BIAS_PULL_DOWN:
 	case PIN_CONFIG_BIAS_PULL_UP:
+	case PIN_CONFIG_BIAS_BUS_HOLD:
 		*bit = g->pull_bit;
 		*mask = 3;
 		break;
@@ -243,6 +244,7 @@ static int msm_config_set(struct pinctrl
 
 #define MSM_NO_PULL	0
 #define MSM_PULL_DOWN	1
+#define MSM_KEEPER	2
 #define MSM_PULL_UP	3
 
 static unsigned msm_regval_to_drive(u32 val)
@@ -280,6 +282,9 @@ static int msm_config_group_get(struct p
 	case PIN_CONFIG_BIAS_PULL_DOWN:
 		arg = arg == MSM_PULL_DOWN;
 		break;
+	case PIN_CONFIG_BIAS_BUS_HOLD:
+		arg = arg == MSM_KEEPER;
+		break;
 	case PIN_CONFIG_BIAS_PULL_UP:
 		arg = arg == MSM_PULL_UP;
 		break;
@@ -339,6 +344,9 @@ static int msm_config_group_set(struct p
 		case PIN_CONFIG_BIAS_PULL_DOWN:
 			arg = MSM_PULL_DOWN;
 			break;
+		case PIN_CONFIG_BIAS_BUS_HOLD:
+			arg = MSM_KEEPER;
+			break;
 		case PIN_CONFIG_BIAS_PULL_UP:
 			arg = MSM_PULL_UP;
 			break;