pinctrl: sprd: Add pin high impedance mode support (1592c4b9) · Commits · 戴 / test

For Spreadtrum pin controller, it will be the high impedance mode if disable input and output mode for a pin. Thus add PIN_CONFIG_BIAS_HIGH_IMPEDANCE configuration to support it. Signed-off-by:

Linhua Xu <linhua.xu@unisoc.com> Signed-off-by:

Baolin Wang <baolin.wang7@gmail.com> Link: https://lore.kernel.org/r/3bdac4c2673b54c940e511f3fa569ee33b87b8d5.1585124562.git.baolin.wang7@gmail.com Signed-off-by:

Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/sprd/pinctrl-sprd.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -467,6 +467,12 @@ static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
		case PIN_CONFIG_OUTPUT_ENABLE:
		arg = reg & SLEEP_OUTPUT_MASK;
		break;
		case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
		if ((reg & SLEEP_OUTPUT) \|\| (reg & SLEEP_INPUT))
		return -EINVAL;

		arg = 1;
		break;
		case PIN_CONFIG_DRIVE_STRENGTH:
		arg = (reg >> DRIVE_STRENGTH_SHIFT) &
		DRIVE_STRENGTH_MASK;
		@@ -646,6 +652,12 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
		shift = SLEEP_OUTPUT_SHIFT;
		}
		break;
		case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
		if (is_sleep_config == true) {
		val = shift = 0;
		mask = SLEEP_OUTPUT \| SLEEP_INPUT;
		}
		break;
		case PIN_CONFIG_DRIVE_STRENGTH:
		if (arg < 2 \|\| arg > 60)
		return -EINVAL;

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