[PATCH V3 1/6] pinctrl: sprd: Modify pull-up parameters

[Linhua Xu]

From: Linhua Xu <Linhua.Xu@xxxxxxxxxx>

For UNISOC pin controller, there are three different configurations of
pull-up drive current. Modify the 20K pull-up resistor configuration and
add the 1.8K pull-up resistor configuration.

Fixes:<1fb4b907e808> ("pinctrl: sprd: Add Spreadtrum pin control driver")

Signed-off-by: Linhua Xu <Linhua.Xu@xxxxxxxxxx>
---
 drivers/pinctrl/sprd/pinctrl-sprd.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.c b/drivers/pinctrl/sprd/pinctrl-sprd.c
index ca9659f4e4b1..74d8f8c3b9b6 100644
--- a/drivers/pinctrl/sprd/pinctrl-sprd.c
+++ b/drivers/pinctrl/sprd/pinctrl-sprd.c
@@ -71,7 +71,8 @@
 #define SLEEP_PULL_UP_MASK		0x1
 #define SLEEP_PULL_UP_SHIFT		3
 
-#define PULL_UP_4_7K			(BIT(12) | BIT(7))
+#define PULL_UP_1_8K			(BIT(12) | BIT(7))
+#define PULL_UP_4_7K			BIT(12)
 #define PULL_UP_20K			BIT(7)
 #define PULL_UP_MASK			0x21
 #define PULL_UP_SHIFT			7
@@ -497,7 +498,7 @@ static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
 			break;
 		case PIN_CONFIG_BIAS_DISABLE:
 			if ((reg & (SLEEP_PULL_DOWN | SLEEP_PULL_UP)) ||
-			    (reg & (PULL_DOWN | PULL_UP_4_7K | PULL_UP_20K)))
+			    (reg & (PULL_DOWN | PULL_UP_4_7K | PULL_UP_20K | PULL_UP_1_8K)))
 				return -EINVAL;
 
 			arg = 1;
@@ -699,6 +700,8 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
 						val |= PULL_UP_20K;
 					else if (arg == 4700)
 						val |= PULL_UP_4_7K;
+					else if (arg == 1800)
+						val |= PULL_UP_1_8K;
 
 					mask = PULL_UP_MASK;
 					shift = PULL_UP_SHIFT;
@@ -711,7 +714,7 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
 				} else {
 					val = shift = 0;
 					mask = PULL_DOWN | PULL_UP_20K |
-						PULL_UP_4_7K;
+						PULL_UP_4_7K | PULL_UP_1_8K;
 				}
 				break;
 			case PIN_CONFIG_SLEEP_HARDWARE_STATE:
-- 
2.17.1