| /* |
| * Copyright (c) 2023 Intel Corporation. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <errno.h> |
| #include <zephyr/acpi/acpi.h> |
| #include "soc.h" |
| #include "soc_gpio.h" |
| |
| #define GET_GPIO_BASE_NUM ("\\_SB.GINF") |
| |
| static int gpio_info_acpi_get(uint32_t bank_idx, uint32_t field_idx, uint32_t *ret_val) |
| { |
| int status; |
| ACPI_OBJECT args[2]; |
| ACPI_OBJECT_LIST arg_list; |
| ACPI_OBJECT gpio_obj; |
| |
| arg_list.Count = ARRAY_SIZE(args); |
| arg_list.Pointer = args; |
| |
| args[0].Type = ACPI_TYPE_INTEGER; |
| args[0].Integer.Value = bank_idx; |
| |
| args[1].Type = ACPI_TYPE_INTEGER; |
| args[1].Integer.Value = field_idx; |
| |
| status = acpi_invoke_method(GET_GPIO_BASE_NUM, &arg_list, &gpio_obj); |
| if (status) { |
| return status; |
| } |
| |
| if (gpio_obj.Type == ACPI_TYPE_INTEGER) { |
| *ret_val = gpio_obj.Integer.Value; |
| } |
| |
| return status; |
| } |
| |
| int soc_acpi_gpio_resource_get(int bank_idx, char *hid, char *uid, struct gpio_acpi_res *res) |
| { |
| int ret; |
| struct acpi_dev *acpi_child; |
| struct acpi_irq_resource irq_res; |
| struct acpi_mmio_resource mmio_res; |
| uint32_t field_val[7]; |
| uint16_t irqs[CONFIG_ACPI_IRQ_VECTOR_MAX]; |
| struct acpi_reg_base reg_base[CONFIG_ACPI_MMIO_ENTRIES_MAX]; |
| |
| acpi_child = acpi_device_get(hid, uid); |
| if (!acpi_child) { |
| printk("acpi_device_get failed\n"); |
| return -EIO; |
| } |
| |
| mmio_res.mmio_max = ARRAY_SIZE(reg_base); |
| mmio_res.reg_base = reg_base; |
| ret = acpi_device_mmio_get(acpi_child, &mmio_res); |
| if (ret) { |
| printk("acpi_device_mmio_get failed\n"); |
| return ret; |
| } |
| |
| irq_res.irq_vector_max = ARRAY_SIZE(irqs); |
| irq_res.irqs = irqs; |
| ret = acpi_device_irq_get(acpi_child, &irq_res); |
| if (ret) { |
| printk("acpi_device_irq_get failed\n"); |
| return ret; |
| } |
| |
| res->irq = irq_res.irqs[0]; |
| res->irq_flags = irq_res.flags; |
| |
| if (ACPI_RESOURCE_TYPE_GET(&mmio_res) == ACPI_RES_TYPE_MEM) { |
| for (int i = 0; i < ARRAY_SIZE(field_val); i++) { |
| ret = gpio_info_acpi_get(bank_idx, i, &field_val[i]); |
| if (ret) { |
| printk("gpio_info_acpi_get failed\n"); |
| return ret; |
| } |
| } |
| |
| res->reg_base = ACPI_MMIO_GET(&mmio_res) & (~0x0FFFFFF); |
| res->reg_base += field_val[0]; |
| res->len = ACPI_RESOURCE_SIZE_GET(&mmio_res); |
| res->num_pins = field_val[1]; |
| res->pad_base = field_val[2]; |
| res->host_owner_reg = field_val[3]; |
| res->pad_owner_reg = field_val[4]; |
| res->intr_stat_reg = field_val[5] - 0x40; |
| res->base_num = field_val[6]; |
| } else { |
| printk("ACPI_RES_TYPE_MEM failed\n"); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |