pinctrl: qcom: spmi-gpio: add support for LV_VIN2 and MV_VIN3 subtypes

Add support for SPMI PMIC GPIO subtypes GPIO_LV_VIN2 and
GPIO_MV_VIN3.

GPIO_LV_VIN2 GPIOs support two input reference voltages: VIN0 and
VIN1.  These are typically connected to 1.8 V and 1.2 V supplies
respectively.

GPIO_MV_VIN3 GPIOs support three input reference voltages: VIN0,
VIN1, and VIN2.  These are typically connected to Vph, 1.8 V, and
1.2 V supplies respectively.
Signed-off-by: David Collins <quic_collinsd@quicinc.com>
Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>
Link: https://lore.kernel.org/r/20220912210624.4527-2-quic_amelende@quicinc.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/pinctrl-spmi-gpio.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2012-2014, 2016-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/gpio/driver.h>
@@ -36,6 +37,8 @@
 #define PMIC_GPIO_SUBTYPE_GPIOC_8CH		0xd
 #define PMIC_GPIO_SUBTYPE_GPIO_LV		0x10
 #define PMIC_GPIO_SUBTYPE_GPIO_MV		0x11
+#define PMIC_GPIO_SUBTYPE_GPIO_LV_VIN2		0x12
+#define PMIC_GPIO_SUBTYPE_GPIO_MV_VIN3		0x13
 
 #define PMIC_MPP_REG_RT_STS			0x10
 #define PMIC_MPP_REG_RT_STS_VAL_MASK		0x1
@@ -822,6 +825,16 @@ static int pmic_gpio_populate(struct pmic_gpio_state *state,
 		pad->have_buffer = true;
 		pad->lv_mv_type = true;
 		break;
+	case PMIC_GPIO_SUBTYPE_GPIO_LV_VIN2:
+		pad->num_sources = 2;
+		pad->have_buffer = true;
+		pad->lv_mv_type = true;
+		break;
+	case PMIC_GPIO_SUBTYPE_GPIO_MV_VIN3:
+		pad->num_sources = 3;
+		pad->have_buffer = true;
+		pad->lv_mv_type = true;
+		break;
 	default:
 		dev_err(state->dev, "unknown GPIO type 0x%x\n", subtype);
 		return -ENODEV;