/* * Copyright (c) 2020 ITE Corporation. All Rights Reserved. * * SPDX-License-Identifier: Apache-2.0 * */ #include #include #include #include #include #include #include #include #include #include "gpio_utils.h" #define DT_DRV_COMPAT ite_it8xxx2_gpio /* * Structure gpio_ite_cfg is about the setting of gpio * this config will be used at initial time */ struct gpio_ite_cfg { /* gpio_driver_config needs to be first */ struct gpio_driver_config common; /* gpio port data register (bit mapping to pin) */ uintptr_t reg_gpdr; /* gpio port control register (byte mapping to pin) */ uintptr_t reg_gpcr; /* gpio port data mirror register (bit mapping to pin) */ uintptr_t reg_gpdmr; /* gpio port output type register (bit mapping to pin) */ uintptr_t reg_gpotr; /* Index in gpio_1p8v for voltage level control register element. */ uint8_t index; /* gpio's irq */ uint8_t gpio_irq[8]; }; /* Structure gpio_ite_data is about callback function */ struct gpio_ite_data { struct gpio_driver_data common; sys_slist_t callbacks; }; /* dev macros for GPIO */ #define DEV_GPIO_DATA(dev) \ ((struct gpio_ite_data *)(dev)->data) #define DEV_GPIO_CFG(dev) \ ((const struct gpio_ite_cfg *)(dev)->config) /** * Convert wake-up controller (WUC) group to the corresponding wake-up edge * sense register (WUESR). Return pointer to the register. * * @param grp WUC group. * * @return Pointer to corresponding WUESR register. */ static volatile uint8_t *wuesr(uint8_t grp) { /* * From WUESR1-WUESR4, the address increases by ones. From WUESR5 on * the address increases by fours. */ return (grp <= 4) ? (volatile uint8_t *)(IT8XXX2_WUC_WUESR1 + grp-1) : (volatile uint8_t *)(IT8XXX2_WUC_WUESR5 + 4*(grp-5)); } /** * Convert wake-up controller (WUC) group to the corresponding wake-up edge * mode register (WUEMR). Return pointer to the register. * * @param grp WUC group. * * @return Pointer to corresponding WUEMR register. */ static volatile uint8_t *wuemr(uint8_t grp) { /* * From WUEMR1-WUEMR4, the address increases by ones. From WUEMR5 on * the address increases by fours. */ return (grp <= 4) ? (volatile uint8_t *)(IT8XXX2_WUC_WUEMR1 + grp-1) : (volatile uint8_t *)(IT8XXX2_WUC_WUEMR5 + 4*(grp-5)); } /** * Convert wake-up controller (WUC) group to the corresponding wake-up both edge * mode register (WUBEMR). Return pointer to the register. * * @param grp WUC group. * * @return Pointer to corresponding WUBEMR register. */ static volatile uint8_t *wubemr(uint8_t grp) { /* * From WUBEMR1-WUBEMR4, the address increases by ones. From WUBEMR5 on * the address increases by fours. */ return (grp <= 4) ? (volatile uint8_t *)(IT8XXX2_WUC_WUBEMR1 + grp-1) : (volatile uint8_t *)(IT8XXX2_WUC_WUBEMR5 + 4*(grp-5)); } /* * Array to store the corresponding GPIO WUC group and mask * for each WUC interrupt. This allows GPIO interrupts coming in through WUC * to easily identify which pin caused the interrupt. */ static const struct { uint8_t gpio_mask; uint8_t wuc_group; uint8_t wuc_mask; } gpio_irqs[] = { /* irq gpio_mask, wuc_group, wuc_mask */ [IT8XXX2_IRQ_WU20] = {BIT(0), 2, BIT(0)}, [IT8XXX2_IRQ_WU21] = {BIT(1), 2, BIT(1)}, [IT8XXX2_IRQ_WU22] = {BIT(4), 2, BIT(2)}, [IT8XXX2_IRQ_WU23] = {BIT(6), 2, BIT(3)}, [IT8XXX2_IRQ_WU24] = {BIT(2), 2, BIT(4)}, [IT8XXX2_IRQ_WU40] = {BIT(5), 4, BIT(0)}, [IT8XXX2_IRQ_WU45] = {BIT(6), 4, BIT(5)}, [IT8XXX2_IRQ_WU46] = {BIT(7), 4, BIT(6)}, [IT8XXX2_IRQ_WU50] = {BIT(0), 5, BIT(0)}, [IT8XXX2_IRQ_WU51] = {BIT(1), 5, BIT(1)}, [IT8XXX2_IRQ_WU52] = {BIT(2), 5, BIT(2)}, [IT8XXX2_IRQ_WU53] = {BIT(3), 5, BIT(3)}, [IT8XXX2_IRQ_WU54] = {BIT(4), 5, BIT(4)}, [IT8XXX2_IRQ_WU55] = {BIT(5), 5, BIT(5)}, [IT8XXX2_IRQ_WU56] = {BIT(6), 5, BIT(6)}, [IT8XXX2_IRQ_WU57] = {BIT(7), 5, BIT(7)}, [IT8XXX2_IRQ_WU60] = {BIT(0), 6, BIT(0)}, [IT8XXX2_IRQ_WU61] = {BIT(1), 6, BIT(1)}, [IT8XXX2_IRQ_WU62] = {BIT(2), 6, BIT(2)}, [IT8XXX2_IRQ_WU63] = {BIT(3), 6, BIT(3)}, [IT8XXX2_IRQ_WU64] = {BIT(4), 6, BIT(4)}, [IT8XXX2_IRQ_WU65] = {BIT(5), 6, BIT(5)}, [IT8XXX2_IRQ_WU65] = {BIT(6), 6, BIT(6)}, [IT8XXX2_IRQ_WU67] = {BIT(7), 6, BIT(7)}, [IT8XXX2_IRQ_WU70] = {BIT(0), 7, BIT(0)}, [IT8XXX2_IRQ_WU71] = {BIT(1), 7, BIT(1)}, [IT8XXX2_IRQ_WU72] = {BIT(2), 7, BIT(2)}, [IT8XXX2_IRQ_WU73] = {BIT(3), 7, BIT(3)}, [IT8XXX2_IRQ_WU74] = {BIT(4), 7, BIT(4)}, [IT8XXX2_IRQ_WU75] = {BIT(5), 7, BIT(5)}, [IT8XXX2_IRQ_WU76] = {BIT(6), 7, BIT(6)}, [IT8XXX2_IRQ_WU77] = {BIT(7), 7, BIT(7)}, [IT8XXX2_IRQ_WU80] = {BIT(3), 8, BIT(0)}, [IT8XXX2_IRQ_WU81] = {BIT(4), 8, BIT(1)}, [IT8XXX2_IRQ_WU82] = {BIT(5), 8, BIT(2)}, [IT8XXX2_IRQ_WU83] = {BIT(6), 8, BIT(3)}, [IT8XXX2_IRQ_WU84] = {BIT(2), 8, BIT(4)}, [IT8XXX2_IRQ_WU85] = {BIT(0), 8, BIT(5)}, [IT8XXX2_IRQ_WU86] = {BIT(7), 8, BIT(6)}, [IT8XXX2_IRQ_WU87] = {BIT(7), 8, BIT(7)}, [IT8XXX2_IRQ_WU88] = {BIT(4), 9, BIT(0)}, [IT8XXX2_IRQ_WU89] = {BIT(5), 9, BIT(1)}, [IT8XXX2_IRQ_WU90] = {BIT(6), 9, BIT(2)}, [IT8XXX2_IRQ_WU91] = {BIT(0), 9, BIT(3)}, [IT8XXX2_IRQ_WU92] = {BIT(1), 9, BIT(4)}, [IT8XXX2_IRQ_WU93] = {BIT(2), 9, BIT(5)}, [IT8XXX2_IRQ_WU94] = {BIT(4), 9, BIT(6)}, [IT8XXX2_IRQ_WU95] = {BIT(2), 9, BIT(7)}, [IT8XXX2_IRQ_WU96] = {BIT(0), 10, BIT(0)}, [IT8XXX2_IRQ_WU97] = {BIT(1), 10, BIT(1)}, [IT8XXX2_IRQ_WU98] = {BIT(2), 10, BIT(2)}, [IT8XXX2_IRQ_WU99] = {BIT(3), 10, BIT(3)}, [IT8XXX2_IRQ_WU100] = {BIT(7), 10, BIT(4)}, [IT8XXX2_IRQ_WU101] = {BIT(0), 10, BIT(5)}, [IT8XXX2_IRQ_WU102] = {BIT(1), 10, BIT(6)}, [IT8XXX2_IRQ_WU103] = {BIT(3), 10, BIT(7)}, [IT8XXX2_IRQ_WU104] = {BIT(5), 11, BIT(0)}, [IT8XXX2_IRQ_WU105] = {BIT(6), 11, BIT(1)}, [IT8XXX2_IRQ_WU106] = {BIT(7), 11, BIT(2)}, [IT8XXX2_IRQ_WU107] = {BIT(1), 11, BIT(3)}, [IT8XXX2_IRQ_WU108] = {BIT(3), 11, BIT(4)}, [IT8XXX2_IRQ_WU109] = {BIT(5), 11, BIT(5)}, [IT8XXX2_IRQ_WU110] = {BIT(3), 11, BIT(6)}, [IT8XXX2_IRQ_WU111] = {BIT(4), 11, BIT(7)}, [IT8XXX2_IRQ_WU112] = {BIT(5), 12, BIT(0)}, [IT8XXX2_IRQ_WU113] = {BIT(6), 12, BIT(1)}, [IT8XXX2_IRQ_WU114] = {BIT(4), 12, BIT(2)}, [IT8XXX2_IRQ_WU115] = {BIT(0), 12, BIT(3)}, [IT8XXX2_IRQ_WU116] = {BIT(1), 12, BIT(4)}, [IT8XXX2_IRQ_WU117] = {BIT(2), 12, BIT(5)}, [IT8XXX2_IRQ_WU118] = {BIT(6), 12, BIT(6)}, [IT8XXX2_IRQ_WU119] = {BIT(0), 12, BIT(7)}, [IT8XXX2_IRQ_WU120] = {BIT(1), 13, BIT(0)}, [IT8XXX2_IRQ_WU121] = {BIT(2), 13, BIT(1)}, [IT8XXX2_IRQ_WU122] = {BIT(3), 13, BIT(2)}, [IT8XXX2_IRQ_WU123] = {BIT(3), 13, BIT(3)}, [IT8XXX2_IRQ_WU124] = {BIT(4), 13, BIT(4)}, [IT8XXX2_IRQ_WU125] = {BIT(5), 13, BIT(5)}, [IT8XXX2_IRQ_WU126] = {BIT(7), 13, BIT(6)}, [IT8XXX2_IRQ_WU128] = {BIT(0), 14, BIT(0)}, [IT8XXX2_IRQ_WU129] = {BIT(1), 14, BIT(1)}, [IT8XXX2_IRQ_WU130] = {BIT(2), 14, BIT(2)}, [IT8XXX2_IRQ_WU131] = {BIT(3), 14, BIT(3)}, [IT8XXX2_IRQ_WU132] = {BIT(4), 14, BIT(4)}, [IT8XXX2_IRQ_WU133] = {BIT(5), 14, BIT(5)}, [IT8XXX2_IRQ_WU134] = {BIT(6), 14, BIT(6)}, [IT8XXX2_IRQ_WU135] = {BIT(7), 14, BIT(7)}, [IT8XXX2_IRQ_WU136] = {BIT(0), 15, BIT(0)}, [IT8XXX2_IRQ_WU137] = {BIT(1), 15, BIT(1)}, [IT8XXX2_IRQ_WU138] = {BIT(2), 15, BIT(2)}, [IT8XXX2_IRQ_WU139] = {BIT(3), 15, BIT(3)}, [IT8XXX2_IRQ_WU140] = {BIT(4), 15, BIT(4)}, [IT8XXX2_IRQ_WU141] = {BIT(5), 15, BIT(5)}, [IT8XXX2_IRQ_WU142] = {BIT(6), 15, BIT(6)}, [IT8XXX2_IRQ_WU143] = {BIT(7), 15, BIT(7)}, [IT8XXX2_IRQ_WU144] = {BIT(0), 16, BIT(0)}, [IT8XXX2_IRQ_WU145] = {BIT(1), 16, BIT(1)}, [IT8XXX2_IRQ_WU146] = {BIT(2), 16, BIT(2)}, [IT8XXX2_IRQ_WU147] = {BIT(3), 16, BIT(3)}, [IT8XXX2_IRQ_WU148] = {BIT(4), 16, BIT(4)}, [IT8XXX2_IRQ_WU149] = {BIT(5), 16, BIT(5)}, [IT8XXX2_IRQ_WU150] = {BIT(6), 16, BIT(6)}, [IT8XXX2_IRQ_COUNT] = { 0, 0, 0}, }; BUILD_ASSERT(ARRAY_SIZE(gpio_irqs) == IT8XXX2_IRQ_COUNT + 1); /* 1.8v gpio group a, b, c, d, e, f, g, h, i, j, k, l, and m */ #define GPIO_GROUP_COUNT 13 #define GPIO_GROUP_INDEX(label) \ (uint8_t)(DT_REG_ADDR(DT_NODELABEL(label)) - \ DT_REG_ADDR(DT_NODELABEL(gpioa))) /* general control registers for selecting 1.8V/3.3V */ static const struct { uint8_t offset; uint8_t mask_1p8v; } gpio_1p8v[GPIO_GROUP_COUNT][8] = { [GPIO_GROUP_INDEX(gpioa)] = { [4] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(0)}, [5] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(1)}, [6] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(5)}, [7] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(6)} }, [GPIO_GROUP_INDEX(gpiob)] = { [3] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(1)}, [4] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(0)}, [5] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(7)}, [6] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(6)}, [7] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(4)} }, [GPIO_GROUP_INDEX(gpioc)] = { [0] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(7)}, [1] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(5)}, [2] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(4)}, [4] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(2)}, [6] = {IT8XXX2_GPIO_GCR24_OFFSET, BIT(3)}, [7] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(3)} }, [GPIO_GROUP_INDEX(gpiod)] = { [0] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(2)}, [1] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(1)}, [2] = {IT8XXX2_GPIO_GCR19_OFFSET, BIT(0)}, [3] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(7)}, [4] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(6)}, [5] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(4)}, [6] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(5)}, [7] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(6)} }, [GPIO_GROUP_INDEX(gpioe)] = { [0] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(5)}, [1] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(6)}, [2] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(7)}, [4] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(2)}, [5] = {IT8XXX2_GPIO_GCR22_OFFSET, BIT(3)}, [6] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(4)}, [7] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(3)} }, [GPIO_GROUP_INDEX(gpiof)] = { [0] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(4)}, [1] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(5)}, [2] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(2)}, [3] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(1)}, [4] = {IT8XXX2_GPIO_GCR20_OFFSET, BIT(0)}, [5] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(7)}, [6] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(6)}, [7] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(5)} }, [GPIO_GROUP_INDEX(gpiog)] = { [0] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(2)}, [1] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(4)}, [2] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(3)}, [6] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(3)} }, [GPIO_GROUP_INDEX(gpioh)] = { [0] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(2)}, [1] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(1)}, [2] = {IT8XXX2_GPIO_GCR21_OFFSET, BIT(0)}, [5] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(7)}, [6] = {IT8XXX2_GPIO_GCR28_OFFSET, BIT(0)} }, [GPIO_GROUP_INDEX(gpioi)] = { [0] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(3)}, [1] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(4)}, [2] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(5)}, [3] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(6)}, [4] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(7)}, [5] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(4)}, [6] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(5)}, [7] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(6)} }, [GPIO_GROUP_INDEX(gpioj)] = { [0] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(0)}, [1] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(1)}, [2] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(2)}, [3] = {IT8XXX2_GPIO_GCR23_OFFSET, BIT(3)}, [4] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(0)}, [5] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(1)}, [6] = {IT8XXX2_GPIO_GCR27_OFFSET, BIT(2)}, [7] = {IT8XXX2_GPIO_GCR33_OFFSET, BIT(2)} }, [GPIO_GROUP_INDEX(gpiok)] = { [0] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(0)}, [1] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(1)}, [2] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(2)}, [3] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(3)}, [4] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(4)}, [5] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(5)}, [6] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(6)}, [7] = {IT8XXX2_GPIO_GCR26_OFFSET, BIT(7)} }, [GPIO_GROUP_INDEX(gpiol)] = { [0] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(0)}, [1] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(1)}, [2] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(2)}, [3] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(3)}, [4] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(4)}, [5] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(5)}, [6] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(6)}, [7] = {IT8XXX2_GPIO_GCR25_OFFSET, BIT(7)} }, /* * M group's voltage level is according to chip's VCC is connected * to 1.8V or 3.3V. */ [GPIO_GROUP_INDEX(gpiom)] = { [0] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)}, [1] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)}, [2] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)}, [3] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)}, [4] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)}, [5] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)}, [6] = {IT8XXX2_GPIO_GCR30_OFFSET, BIT(4)} }, }; /** * Driver functions */ static int gpio_ite_configure(const struct device *dev, gpio_pin_t pin, gpio_flags_t flags) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); volatile uint8_t *reg_gpdr = (uint8_t *)gpio_config->reg_gpdr; volatile uint8_t *reg_gpcr = (uint8_t *)(gpio_config->reg_gpcr + pin); volatile uint8_t *reg_gpotr = (uint8_t *)gpio_config->reg_gpotr; volatile uint8_t *reg_1p8v; volatile uint8_t mask_1p8v; uint8_t mask = BIT(pin); __ASSERT(gpio_config->index < GPIO_GROUP_COUNT, "Invalid GPIO group index"); /* Don't support "open source" mode */ if (((flags & GPIO_SINGLE_ENDED) != 0) && ((flags & GPIO_LINE_OPEN_DRAIN) == 0)) { return -ENOTSUP; } /* * Select open drain first, so that we don't glitch the signal * when changing the line to an output. */ if (flags & GPIO_OPEN_DRAIN) *reg_gpotr |= mask; else *reg_gpotr &= ~mask; /* 1.8V or 3.3V */ reg_1p8v = &IT8XXX2_GPIO_GCRX( gpio_1p8v[gpio_config->index][pin].offset); mask_1p8v = gpio_1p8v[gpio_config->index][pin].mask_1p8v; if (reg_1p8v != &IT8XXX2_GPIO_GCRX(0)) { gpio_flags_t volt = flags & IT8XXX2_GPIO_VOLTAGE_MASK; if (volt == IT8XXX2_GPIO_VOLTAGE_1P8) { __ASSERT(!(flags & GPIO_PULL_UP), "Don't enable internal pullup if 1.8V voltage is used"); *reg_1p8v |= mask_1p8v; } else if (volt == IT8XXX2_GPIO_VOLTAGE_3P3 || volt == IT8XXX2_GPIO_VOLTAGE_DEFAULT) { *reg_1p8v &= ~mask_1p8v; } else { return -EINVAL; } } /* If output, set level before changing type to an output. */ if (flags & GPIO_OUTPUT) { if (flags & GPIO_OUTPUT_INIT_HIGH) *reg_gpdr |= mask; else if (flags & GPIO_OUTPUT_INIT_LOW) *reg_gpdr &= ~mask; } /* Set input or output. */ if (flags & GPIO_OUTPUT) *reg_gpcr = (*reg_gpcr | GPCR_PORT_PIN_MODE_OUTPUT) & ~GPCR_PORT_PIN_MODE_INPUT; else *reg_gpcr = (*reg_gpcr | GPCR_PORT_PIN_MODE_INPUT) & ~GPCR_PORT_PIN_MODE_OUTPUT; /* Handle pullup / pulldown */ if (flags & GPIO_PULL_UP) { *reg_gpcr = (*reg_gpcr | GPCR_PORT_PIN_MODE_PULLUP) & ~GPCR_PORT_PIN_MODE_PULLDOWN; } else if (flags & GPIO_PULL_DOWN) { *reg_gpcr = (*reg_gpcr | GPCR_PORT_PIN_MODE_PULLDOWN) & ~GPCR_PORT_PIN_MODE_PULLUP; } else { /* No pull up/down */ *reg_gpcr &= ~(GPCR_PORT_PIN_MODE_PULLUP | GPCR_PORT_PIN_MODE_PULLDOWN); } return 0; } static int gpio_ite_port_get_raw(const struct device *dev, gpio_port_value_t *value) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); volatile uint8_t *reg_gpdmr = (uint8_t *)gpio_config->reg_gpdmr; /* Get raw bits of GPIO mirror register */ *value = *reg_gpdmr; return 0; } static int gpio_ite_port_set_masked_raw(const struct device *dev, gpio_port_pins_t mask, gpio_port_value_t value) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); volatile uint8_t *reg_gpdr = (uint8_t *)gpio_config->reg_gpdr; uint8_t out = *reg_gpdr; *reg_gpdr = ((out & ~mask) | (value & mask)); return 0; } static int gpio_ite_port_set_bits_raw(const struct device *dev, gpio_port_pins_t pins) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); volatile uint8_t *reg_gpdr = (uint8_t *)gpio_config->reg_gpdr; /* Set raw bits of GPIO data register */ *reg_gpdr |= pins; return 0; } static int gpio_ite_port_clear_bits_raw(const struct device *dev, gpio_port_pins_t pins) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); volatile uint8_t *reg_gpdr = (uint8_t *)gpio_config->reg_gpdr; /* Clear raw bits of GPIO data register */ *reg_gpdr &= ~pins; return 0; } static int gpio_ite_port_toggle_bits(const struct device *dev, gpio_port_pins_t pins) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); volatile uint8_t *reg_gpdr = (uint8_t *)gpio_config->reg_gpdr; /* Toggle raw bits of GPIO data register */ *reg_gpdr ^= pins; return 0; } static int gpio_ite_manage_callback(const struct device *dev, struct gpio_callback *callback, bool set) { struct gpio_ite_data *data = DEV_GPIO_DATA(dev); return gpio_manage_callback(&data->callbacks, callback, set); } static void gpio_ite_isr(const void *arg) { uint8_t irq = ite_intc_get_irq_num(); const struct device *dev = arg; struct gpio_ite_data *data = DEV_GPIO_DATA(dev); uint8_t gpio_mask = gpio_irqs[irq].gpio_mask; if (gpio_irqs[irq].wuc_group) { /* Clear the WUC status register. */ *(wuesr(gpio_irqs[irq].wuc_group)) = gpio_irqs[irq].wuc_mask; gpio_fire_callbacks(&data->callbacks, dev, gpio_mask); } } static int gpio_ite_pin_interrupt_configure(const struct device *dev, gpio_pin_t pin, enum gpio_int_mode mode, enum gpio_int_trig trig) { const struct gpio_ite_cfg *gpio_config = DEV_GPIO_CFG(dev); uint8_t gpio_irq = gpio_config->gpio_irq[pin]; if (mode == GPIO_INT_MODE_DISABLED) { /* Disable GPIO interrupt */ irq_disable(gpio_irq); return 0; } if (mode == GPIO_INT_MODE_LEVEL) { printk("Level trigger mode not supported.\r\n"); return -ENOTSUP; } /* Disable irq before configuring it */ irq_disable(gpio_irq); if (trig & GPIO_INT_TRIG_BOTH) { uint8_t wuc_group = gpio_irqs[gpio_irq].wuc_group; uint8_t wuc_mask = gpio_irqs[gpio_irq].wuc_mask; /* Set both edges interrupt. */ if ((trig & GPIO_INT_TRIG_BOTH) == GPIO_INT_TRIG_BOTH) *(wubemr(wuc_group)) |= wuc_mask; else *(wubemr(wuc_group)) &= ~wuc_mask; if (trig & GPIO_INT_TRIG_LOW) *(wuemr(wuc_group)) |= wuc_mask; else *(wuemr(wuc_group)) &= ~wuc_mask; /* * Always write 1 to clear the WUC status register after * modifying edge mode selection register (WUBEMR and WUEMR). */ *(wuesr(wuc_group)) = wuc_mask; } /* Enable GPIO interrupt */ irq_connect_dynamic(gpio_irq, 0, gpio_ite_isr, dev, 0); irq_enable(gpio_irq); return 0; } static const struct gpio_driver_api gpio_ite_driver_api = { .pin_configure = gpio_ite_configure, .port_get_raw = gpio_ite_port_get_raw, .port_set_masked_raw = gpio_ite_port_set_masked_raw, .port_set_bits_raw = gpio_ite_port_set_bits_raw, .port_clear_bits_raw = gpio_ite_port_clear_bits_raw, .port_toggle_bits = gpio_ite_port_toggle_bits, .pin_interrupt_configure = gpio_ite_pin_interrupt_configure, .manage_callback = gpio_ite_manage_callback, }; static int gpio_ite_init(const struct device *dev) { return 0; } #define GPIO_ITE_DEV_CFG_DATA(inst) \ static struct gpio_ite_data gpio_ite_data_##inst; \ static const struct gpio_ite_cfg gpio_ite_cfg_##inst = { \ .common = { \ .port_pin_mask = GPIO_PORT_PIN_MASK_FROM_NGPIOS( \ DT_INST_PROP(inst, ngpios)) \ }, \ .reg_gpdr = DT_INST_REG_ADDR_BY_IDX(inst, 0), \ .reg_gpcr = DT_INST_REG_ADDR_BY_IDX(inst, 1), \ .reg_gpdmr = DT_INST_REG_ADDR_BY_IDX(inst, 2), \ .reg_gpotr = DT_INST_REG_ADDR_BY_IDX(inst, 3), \ .index = (uint8_t)(DT_INST_REG_ADDR(inst) - \ DT_REG_ADDR(DT_NODELABEL(gpioa))), \ .gpio_irq[0] = DT_INST_IRQ_BY_IDX(inst, 0, irq), \ .gpio_irq[1] = DT_INST_IRQ_BY_IDX(inst, 1, irq), \ .gpio_irq[2] = DT_INST_IRQ_BY_IDX(inst, 2, irq), \ .gpio_irq[3] = DT_INST_IRQ_BY_IDX(inst, 3, irq), \ .gpio_irq[4] = DT_INST_IRQ_BY_IDX(inst, 4, irq), \ .gpio_irq[5] = DT_INST_IRQ_BY_IDX(inst, 5, irq), \ .gpio_irq[6] = DT_INST_IRQ_BY_IDX(inst, 6, irq), \ .gpio_irq[7] = DT_INST_IRQ_BY_IDX(inst, 7, irq), \ }; \ DEVICE_DT_INST_DEFINE(inst, \ gpio_ite_init, \ NULL, \ &gpio_ite_data_##inst, \ &gpio_ite_cfg_##inst, \ PRE_KERNEL_1, \ CONFIG_GPIO_INIT_PRIORITY, \ &gpio_ite_driver_api); DT_INST_FOREACH_STATUS_OKAY(GPIO_ITE_DEV_CFG_DATA) static int gpio_it8xxx2_init_set(const struct device *arg) { ARG_UNUSED(arg); if (IS_ENABLED(CONFIG_SOC_IT8XXX2_GPIO_GROUP_K_L_DEFAULT_PULL_DOWN)) { const struct device *gpiok = DEVICE_DT_GET(DT_NODELABEL(gpiok)); const struct device *gpiol = DEVICE_DT_GET(DT_NODELABEL(gpiol)); for (int i = 0; i < 8; i++) { gpio_pin_configure(gpiok, i, GPIO_INPUT | GPIO_PULL_DOWN); gpio_pin_configure(gpiol, i, GPIO_INPUT | GPIO_PULL_DOWN); } } if (IS_ENABLED(CONFIG_SOC_IT8XXX2_GPIO_H7_DEFAULT_OUTPUT_LOW)) { const struct device *gpioh = DEVICE_DT_GET(DT_NODELABEL(gpioh)); gpio_pin_configure(gpioh, 7, GPIO_OUTPUT_LOW); } return 0; } SYS_INIT(gpio_it8xxx2_init_set, PRE_KERNEL_1, CONFIG_GPIO_INIT_PRIORITY);