src/soc/rockchip/rk3288/gpio.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <gpio.h>
  16 #include <soc/gpio.h>
  17 #include <soc/grf.h>
  18 #include <soc/pmu.h>
  19 #include <soc/soc.h>
  20
  21 struct rockchip_gpio_regs *gpio_port[] = {
  22         (struct rockchip_gpio_regs *)0xff750000,
  23         (struct rockchip_gpio_regs *)0xff780000,
  24         (struct rockchip_gpio_regs *)0xff790000,
  25         (struct rockchip_gpio_regs *)0xff7a0000,
  26         (struct rockchip_gpio_regs *)0xff7b0000,
  27         (struct rockchip_gpio_regs *)0xff7c0000,
  28         (struct rockchip_gpio_regs *)0xff7d0000,
  29         (struct rockchip_gpio_regs *)0xff7e0000,
  30         (struct rockchip_gpio_regs *)0xff7f0000
  31 };
  32
  33 #define PMU_GPIO_PORT 0
  34
  35 int is_pmu_gpio(gpio_t gpio)
  36 {
  37         if (gpio.port == PMU_GPIO_PORT)
  38                 return 1;
  39         return 0;
  40 }
  41
  42 void *gpio_grf_reg(gpio_t gpio)
  43 {
  44         if (is_pmu_gpio(gpio))
  45                 return &rk3288_pmu->gpio0pull[gpio.bank];
  46         /* There is one pmu gpio, gpio0, so " - 1" */
  47         return &rk3288_grf->gpio1_p[(gpio.port - 1)][gpio.bank];
  48 }
  49
  50 u32 gpio_get_pull_val(gpio_t gpio, enum gpio_pull pull)
  51 {
  52         /* use the default gpio pull bias setting defined in soc/gpio.h */
  53         return pull;
  54 }