pinctrl: amd: Drop pull up select configuration

pinctrl-amd currently tries to program bit 19 of all GPIOs to select
either a 4kΩ or 8hΩ pull up, but this isn't what bit 19 does.  Bit
19 is marked as reserved, even in the latest platforms documentation.

Drop this programming functionality.

Tested-by: Jan Visser <starquake@linuxeverywhere.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20230705133005.577-4-mario.limonciello@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index c71efd1..b7eb78f 100644 (file)
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -210,7 +210,6 @@ static void amd_gpio_dbg_show(struct seq_file *s, struct gpio_chip *gc)
        char *pin_sts;
        char *interrupt_sts;
        char *wake_sts;
-       char *pull_up_sel;
        char *orientation;
        char debounce_value[40];
        char *debounce_enable;
@@ -318,14 +317,9 @@ static void amd_gpio_dbg_show(struct seq_file *s, struct gpio_chip *gc)
                        seq_printf(s, "   %s|", wake_sts);
 
                        if (pin_reg & BIT(PULL_UP_ENABLE_OFF)) {
-                               if (pin_reg & BIT(PULL_UP_SEL_OFF))
-                                       pull_up_sel = "8k";
-                               else
-                                       pull_up_sel = "4k";
-                               seq_printf(s, "%s ↑|",
-                                          pull_up_sel);
+                               seq_puts(s, "  ↑ |");
                        } else if (pin_reg & BIT(PULL_DOWN_ENABLE_OFF)) {
-                               seq_puts(s, "   ↓|");
+                               seq_puts(s, "  ↓ |");
                        } else  {
                                seq_puts(s, "    |");
                        }
@@ -751,7 +745,7 @@ static int amd_pinconf_get(struct pinctrl_dev *pctldev,
                break;
 
        case PIN_CONFIG_BIAS_PULL_UP:
-               arg = (pin_reg >> PULL_UP_SEL_OFF) & (BIT(0) | BIT(1));
+               arg = (pin_reg >> PULL_UP_ENABLE_OFF) & BIT(0);
                break;
 
        case PIN_CONFIG_DRIVE_STRENGTH:
@@ -798,10 +792,8 @@ static int amd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
                        break;
 
                case PIN_CONFIG_BIAS_PULL_UP:
-                       pin_reg &= ~BIT(PULL_UP_SEL_OFF);
-                       pin_reg |= (arg & BIT(0)) << PULL_UP_SEL_OFF;
                        pin_reg &= ~BIT(PULL_UP_ENABLE_OFF);
-                       pin_reg |= ((arg>>1) & BIT(0)) << PULL_UP_ENABLE_OFF;
+                       pin_reg |= (arg & BIT(0)) << PULL_UP_ENABLE_OFF;
                        break;
 
                case PIN_CONFIG_DRIVE_STRENGTH:

diff --git a/drivers/pinctrl/pinctrl-amd.h b/drivers/pinctrl/pinctrl-amd.h
index 1cf2d06..34c5c3e 100644 (file)
--- a/drivers/pinctrl/pinctrl-amd.h
+++ b/drivers/pinctrl/pinctrl-amd.h
@@ -36,7 +36,6 @@
 #define WAKE_CNTRL_OFF_S4               15
 #define PIN_STS_OFF                    16
 #define DRV_STRENGTH_SEL_OFF           17
-#define PULL_UP_SEL_OFF                        19
 #define PULL_UP_ENABLE_OFF             20
 #define PULL_DOWN_ENABLE_OFF           21
 #define OUTPUT_VALUE_OFF               22