drivers: pinctrl: add support for nrf twis pins

Add support for TWIS pins to nrf pinctrl.

Signed-off-by: Bjarki Arge Andreasen <[email protected]>

Author: bjarki-andreasen

drivers/pinctrl/pinctrl_nrf.c

@@ -94,6 +94,11 @@ static const nrf_gpio_pin_drive_t drive_modes[NRF_DRIVE_COUNT] = {
 #define NRF_PSEL_QSPI(reg, line) ((NRF_QSPI_Type *)reg)->PSEL.line
 #endif
 
+#if DT_HAS_COMPAT_STATUS_OKAY(nordic_nrf_twis) || defined(CONFIG_NRFX_TWIS)
+#include <hal/nrf_twis.h>
+#define NRF_PSEL_TWIS(reg, line) ((NRF_TWIS_Type *)reg)->PSEL.line
+#endif
+
 int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
 			   uintptr_t reg)
 {
@@ -351,6 +356,24 @@ int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
 			input = NRF_GPIO_PIN_INPUT_CONNECT;
 			break;
 #endif /* DT_HAS_COMPAT_STATUS_OKAY(nordic_nrf_can) */
+#if defined(NRF_PSEL_TWIS)
+		case NRF_FUN_TWIS_SCL:
+			NRF_PSEL_TWIS(reg, SCL) = psel;
+			if (drive == NRF_GPIO_PIN_S0S1) {
+				drive = NRF_GPIO_PIN_S0D1;
+			}
+			dir = NRF_GPIO_PIN_DIR_INPUT;
+			input = NRF_GPIO_PIN_INPUT_CONNECT;
+			break;
+		case NRF_FUN_TWIS_SDA:
+			NRF_PSEL_TWIS(reg, SDA) = psel;
+			if (drive == NRF_GPIO_PIN_S0S1) {
+				drive = NRF_GPIO_PIN_S0D1;
+			}
+			dir = NRF_GPIO_PIN_DIR_INPUT;
+			input = NRF_GPIO_PIN_INPUT_CONNECT;
+			break;
+#endif /* defined(NRF_PSEL_TWIS) */
 		default:
 			return -ENOTSUP;
 		}

include/zephyr/dt-bindings/pinctrl/nrf-pinctrl.h

@@ -162,6 +162,10 @@
 #define NRF_FUN_CAN_TX 46U
 /** CAN RX */
 #define NRF_FUN_CAN_RX 47U
+/** TWIS SCL */
+#define NRF_FUN_TWIS_SCL 48U
+/** TWIS SDA */
+#define NRF_FUN_TWIS_SDA 49U
 
 /** @} */