pinctrl: qcom: Add BUS_HOLD pin bias

This patch adds the BUS_HOLD (Keeper) bias option for pins.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/pinctrl/pinctrl-msm.c b/drivers/pinctrl/pinctrl-msm.c
index bdfaba4430f2..43d47b7cff92 100644
--- a/drivers/pinctrl/pinctrl-msm.c
+++ b/drivers/pinctrl/pinctrl-msm.c
@@ -181,6 +181,7 @@ static int msm_config_reg(struct msm_pinctrl *pctrl,
         switch (param) {
         case PIN_CONFIG_BIAS_DISABLE:
         case PIN_CONFIG_BIAS_PULL_DOWN:
+        case PIN_CONFIG_BIAS_BUS_HOLD:
         case PIN_CONFIG_BIAS_PULL_UP:
                 *bit = g->pull_bit;
                 *mask = 3;
@@ -218,6 +219,7 @@ static int msm_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
 
 #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)
@@ -255,6 +257,9 @@ static int msm_config_group_get(struct pinctrl_dev *pctldev,
         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;
@@ -314,6 +319,9 @@ static int msm_config_group_set(struct pinctrl_dev *pctldev,
                 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;