// SPDX-License-Identifier: GPL-2.0+

  /*
   * Copyright (C) 2013 Xilinx, Inc.

   */
  #include <common.h>
  #include <command.h>
  #include <clk.h>

  #if defined(CONFIG_DM) && defined(CONFIG_CLK)
  #include <dm.h>

  #include <dm/device.h>
  #include <dm/root.h>

  #include <dm/device-internal.h>

  #include <linux/clk-provider.h>

  #endif

  #if defined(CONFIG_DM) && defined(CONFIG_CLK)

  static void show_clks(struct udevice *dev, int depth, int last_flag)
  {
  	int i, is_last;
  	struct udevice *child;
  	struct clk *clkp;
  	u32 rate;
  
  	clkp = dev_get_clk_ptr(dev);
  	if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
  		rate = clk_get_rate(clkp);
  
  	printf(" %-12u  %8d        ", rate, clkp->enable_count);
  
  	for (i = depth; i >= 0; i--) {
  		is_last = (last_flag >> i) & 1;
  		if (i) {
  			if (is_last)
  				printf("    ");
  			else
  				printf("|   ");
  		} else {
  			if (is_last)
  				printf("`-- ");
  			else
  				printf("|-- ");
  		}
  	}

  	printf("%s
  ", dev->name);
  	}

  	list_for_each_entry(child, &dev->child_head, sibling_node) {
  		is_last = list_is_last(&child->sibling_node, &dev->child_head);
  		show_clks(child, depth + 1, (last_flag << 1) | is_last);
  	}
  }

  int __weak soc_clk_dump(void)
  {
  	struct udevice *root;

  	root = dm_root();
  	if (root) {
  		printf(" Rate               Usecnt      Name
  ");
  		printf("------------------------------------------
  ");
  		show_clks(root, -1, 0);

  	}
  
  	return 0;

  }

  #else

  int __weak soc_clk_dump(void)
  {

  	puts("Not implemented
  ");
  	return 1;
  }

  #endif

  
  static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
  		       char *const argv[])
  {

  	int ret;
  
  	ret = soc_clk_dump();
  	if (ret < 0) {
  		printf("Clock dump error %d
  ", ret);
  		ret = CMD_RET_FAILURE;
  	}
  
  	return ret;

  }
  
  static cmd_tbl_t cmd_clk_sub[] = {
  	U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""),
  };
  
  static int do_clk(cmd_tbl_t *cmdtp, int flag, int argc,
  		  char *const argv[])
  {
  	cmd_tbl_t *c;
  
  	if (argc < 2)
  		return CMD_RET_USAGE;
  
  	/* Strip off leading 'clk' command argument */
  	argc--;
  	argv++;
  
  	c = find_cmd_tbl(argv[0], &cmd_clk_sub[0], ARRAY_SIZE(cmd_clk_sub));
  
  	if (c)
  		return c->cmd(cmdtp, flag, argc, argv);
  	else
  		return CMD_RET_USAGE;
  }
  
  #ifdef CONFIG_SYS_LONGHELP
  static char clk_help_text[] =
  	"dump - Print clock frequencies";
  #endif
  
  U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text);