| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* |
| * This file is created based on MT8186 Functional Specification |
| * Chapter number: 5.1 |
| */ |
| |
| #include <device/mmio.h> |
| #include <gpio.h> |
| |
| static void *gpio_find_reg_addr(gpio_t gpio) |
| { |
| void *reg_addr; |
| switch (gpio.base & 0x0f) { |
| case 1: |
| reg_addr = (void *)IOCFG_LT_BASE; |
| break; |
| case 2: |
| reg_addr = (void *)IOCFG_LM_BASE; |
| break; |
| case 3: |
| reg_addr = (void *)IOCFG_LB_BASE; |
| break; |
| case 4: |
| reg_addr = (void *)IOCFG_BL_BASE; |
| break; |
| case 5: |
| reg_addr = (void *)IOCFG_RB_BASE; |
| break; |
| case 6: |
| reg_addr = (void *)IOCFG_RT_BASE; |
| break; |
| default: |
| reg_addr = NULL; |
| break; |
| } |
| |
| return reg_addr; |
| } |
| |
| static void gpio_set_spec_pull_pupd(gpio_t gpio, enum pull_enable enable, |
| enum pull_select select) |
| { |
| void *reg1; |
| void *reg2; |
| int bit = gpio.bit; |
| |
| reg1 = gpio_find_reg_addr(gpio) + gpio.offset; |
| reg2 = reg1 + (gpio.base & 0xf0); |
| |
| if (enable == GPIO_PULL_ENABLE) { |
| if (select == GPIO_PULL_DOWN) |
| setbits32(reg1, BIT(bit)); |
| else |
| clrbits32(reg1, BIT(bit)); |
| } |
| |
| if (enable == GPIO_PULL_ENABLE) { |
| setbits32(reg2, 1 << bit); |
| } else { |
| clrbits32(reg2, 1 << bit); |
| clrbits32(reg2 + 0x010, BIT(bit)); |
| } |
| } |
| |
| static void gpio_set_pull_pu_pd(gpio_t gpio, enum pull_enable enable, |
| enum pull_select select) |
| { |
| void *reg1; |
| void *reg2; |
| int bit = gpio.bit; |
| |
| reg1 = gpio_find_reg_addr(gpio) + gpio.offset; |
| reg2 = reg1 - (gpio.base & 0xf0); |
| |
| if (enable == GPIO_PULL_ENABLE) { |
| if (select == GPIO_PULL_DOWN) { |
| clrbits32(reg1, BIT(bit)); |
| setbits32(reg2, BIT(bit)); |
| } else { |
| clrbits32(reg2, BIT(bit)); |
| setbits32(reg1, BIT(bit)); |
| } |
| } else { |
| clrbits32(reg1, BIT(bit)); |
| clrbits32(reg2, BIT(bit)); |
| } |
| } |
| |
| void gpio_set_pull(gpio_t gpio, enum pull_enable enable, |
| enum pull_select select) |
| { |
| if (gpio.flag) |
| gpio_set_spec_pull_pupd(gpio, enable, select); |
| else |
| gpio_set_pull_pu_pd(gpio, enable, select); |
| } |