LXR uboot/arch/arm/mach-snapdragon/init

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Common init part for boards based on SDM845
   4 *
   5 * (C) Copyright 2021 Dzmitry Sankouski <dsankouski@gmail.com>
   6 */
   7
   8#include <init.h>
   9#include <env.h>
  10#include <common.h>
  11#include <asm/system.h>
  12#include <asm/gpio.h>
  13#include <dm.h>
  14
  15DECLARE_GLOBAL_DATA_PTR;
  16
  17int dram_init(void)
  18{
  19        return fdtdec_setup_mem_size_base();
  20}
  21
  22void reset_cpu(void)
  23{
  24        psci_system_reset();
  25}
  26
  27__weak int board_init(void)
  28{
  29        return 0;
  30}
  31
  32/* Check for vol- and power buttons */
  33__weak int misc_init_r(void)
  34{
  35        struct udevice *pon;
  36        struct gpio_desc resin;
  37        int node, ret;
  38
  39        ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8998_pon@800", &pon);
  40        if (ret < 0) {
  41                printf("Failed to find PMIC pon node. Check device tree\n");
  42                return 0;
  43        }
  44
  45        node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
  46                                  "key_vol_down");
  47        if (node < 0) {
  48                printf("Failed to find key_vol_down node. Check device tree\n");
  49                return 0;
  50        }
  51        if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
  52                                       &resin, 0)) {
  53                printf("Failed to request key_vol_down button.\n");
  54                return 0;
  55        }
  56        if (dm_gpio_get_value(&resin)) {
  57                env_set("key_vol_down", "1");
  58                printf("Volume down button pressed\n");
  59        } else {
  60                env_set("key_vol_down", "0");
  61        }
  62
  63        node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
  64                                  "key_power");
  65        if (node < 0) {
  66                printf("Failed to find key_power node. Check device tree\n");
  67                return 0;
  68        }
  69        if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
  70                                       &resin, 0)) {
  71                printf("Failed to request key_power button.\n");
  72                return 0;
  73        }
  74        if (dm_gpio_get_value(&resin)) {
  75                env_set("key_power", "1");
  76                printf("Power button pressed\n");
  77        } else {
  78                env_set("key_power", "0");
  79        }
  80
  81        return 0;
  82}
  83