/*
   * OMAP clockdomain support
   *
   * Copyright (C) 2013 Texas Instruments, Inc.
   *
   * Tero Kristo <t-kristo@ti.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   * kind, whether express or implied; without even the implied warranty
   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  #include <linux/clk-provider.h>
  #include <linux/slab.h>
  #include <linux/of.h>
  #include <linux/of_address.h>
  #include <linux/clk/ti.h>
  
  #undef pr_fmt
  #define pr_fmt(fmt) "%s: " fmt, __func__
  
  static void __init of_ti_clockdomain_setup(struct device_node *node)
  {
  	struct clk *clk;
  	struct clk_hw *clk_hw;
  	const char *clkdm_name = node->name;
  	int i;
  	int num_clks;
  
  	num_clks = of_count_phandle_with_args(node, "clocks", "#clock-cells");
  
  	for (i = 0; i < num_clks; i++) {
  		clk = of_clk_get(node, i);
  		if (__clk_get_flags(clk) & CLK_IS_BASIC) {
  			pr_warn("can't setup clkdm for basic clk %s
  ",
  				__clk_get_name(clk));
  			continue;
  		}
  		clk_hw = __clk_get_hw(clk);
  		to_clk_hw_omap(clk_hw)->clkdm_name = clkdm_name;
  		omap2_init_clk_clkdm(clk_hw);
  	}
  }
  
  static struct of_device_id ti_clkdm_match_table[] __initdata = {
  	{ .compatible = "ti,clockdomain" },
  	{ }
  };
  
  /**
   * ti_dt_clockdomains_setup - setup device tree clockdomains
   *
   * Initializes clockdomain nodes for a SoC. This parses through all the
   * nodes with compatible = "ti,clockdomain", and add the clockdomain
   * info for all the clocks listed under these. This function shall be
   * called after rest of the DT clock init has completed and all
   * clock nodes have been registered.
   */
  void __init ti_dt_clockdomains_setup(void)
  {
  	struct device_node *np;
  	for_each_matching_node(np, ti_clkdm_match_table) {
  		of_ti_clockdomain_setup(np);
  	}
  }