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

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Message-ID: <20231027071426.17724-2-Linhua.xu@unisoc.com>
Date:   Fri, 27 Oct 2023 15:14:21 +0800
From:   Linhua Xu <Linhua.xu@...soc.com>
To:     Linus Walleij <linus.walleij@...aro.org>
CC:     Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        <linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        lh xu <xulh0829@...il.com>, Linhua Xu <Linhua.Xu@...soc.com>,
        Zhirong Qiu <zhirong.qiu@...soc.com>,
        Xiongpeng Wu <xiongpeng.wu@...soc.com>
Subject: [PATCH V3 1/6] pinctrl: sprd: Modify pull-up parameters

From: Linhua Xu <Linhua.Xu@...soc.com>

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@...soc.com>
---
 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