/* * This file is part of the coreboot project. * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <gpio.h> #include <soc/addressmap.h> #include <soc/gpio.h> #include <soc/grf.h> #include <soc/soc.h> struct rockchip_gpio_regs *gpio_port[] = { (struct rockchip_gpio_regs *)GPIO0_BASE, (struct rockchip_gpio_regs *)GPIO1_BASE, (struct rockchip_gpio_regs *)GPIO2_BASE, (struct rockchip_gpio_regs *)GPIO3_BASE, (struct rockchip_gpio_regs *)GPIO4_BASE, }; #define PMU_GPIO_PORT0 0 #define PMU_GPIO_PORT1 1 int is_pmu_gpio(gpio_t gpio) { if (gpio.port == PMU_GPIO_PORT0 || gpio.port == PMU_GPIO_PORT1) return 1; return 0; } void *gpio_grf_reg(gpio_t gpio) { if (is_pmu_gpio(gpio)) return &rk3399_pmugrf->gpio0_p[gpio.port][gpio.bank]; /* There are two pmu gpio, 0 and 1, so " - 2" */ return &rk3399_grf->gpio2_p[(gpio.port - 2)][gpio.bank]; } #define IS_GPIO_BANK(g, p, b) (g.port == p && g.bank == GPIO_##b) enum { PULLNONE_1V8 = 0, PULLDOWN_1V8 = 1, PULLUP_1V8 = 3, }; u32 gpio_get_pull_val(gpio_t gpio, enum gpio_pull pull) { /* The default pull bias setting defined in soc/gpio.h */ u32 pull_val = pull; /* GPIO0_A, GPIO0_B, GPIO2_C, GPIO2_D use the 1V8 pull bias setting. * Defined in TRM V.03 Part1 Page 331 and Page 458 */ if (IS_GPIO_BANK(gpio, 0, A) || IS_GPIO_BANK(gpio, 0, B) || IS_GPIO_BANK(gpio, 2, C) || IS_GPIO_BANK(gpio, 2, D)) { switch (pull) { case GPIO_PULLUP: pull_val = PULLUP_1V8; break; case GPIO_PULLDOWN: pull_val = PULLDOWN_1V8; break; case GPIO_PULLNONE: pull_val = PULLNONE_1V8; } } return pull_val; }