[PATCH V3 2/6] pinctrl: sprd: Fix the incorrect mask and shift definition

Linhua Xu posted 6 patches 2 years, 1 month ago
[PATCH V3 2/6] pinctrl: sprd: Fix the incorrect mask and shift definition
Posted by Linhua Xu 2 years, 1 month ago
From: Linhua Xu <Linhua.Xu@unisoc.com>

Pull-up and pull-down are mutually exclusive. When setting one of them,
the bit of the other needs to be clear. Now, there are cases where pull-up
and pull-down are set at the same time in the code, thus fix them.

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

Signed-off-by: Linhua Xu <Linhua.Xu@unisoc.com>
---
 drivers/pinctrl/sprd/pinctrl-sprd.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.c b/drivers/pinctrl/sprd/pinctrl-sprd.c
index 74d8f8c3b9b6..b7a3cb9e7a61 100644
--- a/drivers/pinctrl/sprd/pinctrl-sprd.c
+++ b/drivers/pinctrl/sprd/pinctrl-sprd.c
@@ -60,22 +60,22 @@
 #define DRIVE_STRENGTH_SHIFT		19
 
 #define SLEEP_PULL_DOWN			BIT(2)
-#define SLEEP_PULL_DOWN_MASK		0x1
+#define SLEEP_PULL_DOWN_MASK		GENMASK(1, 0)
 #define SLEEP_PULL_DOWN_SHIFT		2
 
 #define PULL_DOWN			BIT(6)
-#define PULL_DOWN_MASK			0x1
+#define PULL_DOWN_MASK			(GENMASK(1, 0) | BIT(6))
 #define PULL_DOWN_SHIFT			6
 
 #define SLEEP_PULL_UP			BIT(3)
-#define SLEEP_PULL_UP_MASK		0x1
-#define SLEEP_PULL_UP_SHIFT		3
+#define SLEEP_PULL_UP_MASK		GENMASK(1, 0)
+#define SLEEP_PULL_UP_SHIFT		2
 
 #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
+#define PULL_UP_MASK			(GENMASK(1, 0) | BIT(6))
+#define PULL_UP_SHIFT			6
 
 #define INPUT_SCHMITT			BIT(11)
 #define INPUT_SCHMITT_MASK		0x1
-- 
2.17.1
Re: [PATCH V3 2/6] pinctrl: sprd: Fix the incorrect mask and shift definition
Posted by Andy Shevchenko 2 years, 1 month ago
On Fri, Oct 27, 2023 at 03:14:22PM +0800, Linhua Xu wrote:
> From: Linhua Xu <Linhua.Xu@unisoc.com>
> 
> Pull-up and pull-down are mutually exclusive. When setting one of them,
> the bit of the other needs to be clear. Now, there are cases where pull-up
> and pull-down are set at the same time in the code, thus fix them.

...

> Fixes:<1fb4b907e808> ("pinctrl: sprd: Add Spreadtrum pin control driver")
> 
> Signed-off-by: Linhua Xu <Linhua.Xu@unisoc.com>

Same comment  about the Fixes: tag.

...

> -#define SLEEP_PULL_DOWN_MASK		0x1
> +#define SLEEP_PULL_DOWN_MASK		GENMASK(1, 0)
>  #define SLEEP_PULL_DOWN_SHIFT		2

No, this is an incorrect (prone to errors and confusion) change.
You need to introduce new mask for both of them and use in the code.

#define SLEEP_PULL_UP_DOWN_MASK		GENMASK(1, 0)
#define SLEEP_PULL_UP_DOWN_SHIFT	2

...

> -#define PULL_DOWN_MASK			0x1
> +#define PULL_DOWN_MASK			(GENMASK(1, 0) | BIT(6))
>  #define PULL_DOWN_SHIFT			6

Ditto.

#define PULL_UP_DOWN_MASK		(GENMASK(1, 0) | BIT(6))
#define PULL_UP_DOWN_SHIFT		6

-- 
With Best Regards,
Andy Shevchenko