diff mbox series

pinctrl: sprd: Add PIN_CONFIG_BIAS_DISABLE configuration support

Message ID 66d373ddee61e8be2fcef49aac5e80bd58f14915.1570596606.git.baolin.wang@linaro.org
State Accepted
Commit f8b05fe41b72adc8bc3ce164d6a2c7ac55f44724
Headers show
Series pinctrl: sprd: Add PIN_CONFIG_BIAS_DISABLE configuration support | expand

Commit Message

(Exiting) Baolin Wang Oct. 9, 2019, 4:52 a.m. UTC 
Add PIN_CONFIG_BIAS_DISABLE configuration support for Spreadtrum pin
controller.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

---
 drivers/pinctrl/sprd/pinctrl-sprd.c |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

-- 
1.7.9.5
diff mbox series

Patch

diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.c b/drivers/pinctrl/sprd/pinctrl-sprd.c
index 7b95bf5..8869843 100644
--- a/drivers/pinctrl/sprd/pinctrl-sprd.c
+++ b/drivers/pinctrl/sprd/pinctrl-sprd.c
@@ -484,6 +484,13 @@  static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
 			       SLEEP_PULL_UP_MASK) << 16;
 			arg |= (reg >> PULL_UP_SHIFT) & PULL_UP_MASK;
 			break;
+		case PIN_CONFIG_BIAS_DISABLE:
+			if ((reg & (SLEEP_PULL_DOWN | SLEEP_PULL_UP)) ||
+			    (reg & (PULL_DOWN | PULL_UP_4_7K | PULL_UP_20K)))
+				return -EINVAL;
+
+			arg = 1;
+			break;
 		case PIN_CONFIG_SLEEP_HARDWARE_STATE:
 			arg = 0;
 			break;
@@ -674,6 +681,16 @@  static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
 					shift = PULL_UP_SHIFT;
 				}
 				break;
+			case PIN_CONFIG_BIAS_DISABLE:
+				if (is_sleep_config == true) {
+					val = shift = 0;
+					mask = SLEEP_PULL_DOWN | SLEEP_PULL_UP;
+				} else {
+					val = shift = 0;
+					mask = PULL_DOWN | PULL_UP_20K |
+						PULL_UP_4_7K;
+				}
+				break;
 			case PIN_CONFIG_SLEEP_HARDWARE_STATE:
 				continue;
 			default: