/*
   * TI Fixed Factor Clock
   *
   * 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/err.h>
  #include <linux/of.h>
  #include <linux/of_address.h>
  #include <linux/clk/ti.h>

  #include "clock.h"

  #undef pr_fmt
  #define pr_fmt(fmt) "%s: " fmt, __func__
  
  /**
   * of_ti_fixed_factor_clk_setup - Setup function for TI fixed factor clock
   * @node: device node for this clock
   *
   * Sets up a simple fixed factor clock based on device tree info.
   */
  static void __init of_ti_fixed_factor_clk_setup(struct device_node *node)
  {
  	struct clk *clk;
  	const char *clk_name = node->name;
  	const char *parent_name;
  	u32 div, mult;
  	u32 flags = 0;
  
  	if (of_property_read_u32(node, "ti,clock-div", &div)) {
  		pr_err("%s must have a clock-div property
  ", node->name);
  		return;
  	}
  
  	if (of_property_read_u32(node, "ti,clock-mult", &mult)) {
  		pr_err("%s must have a clock-mult property
  ", node->name);
  		return;
  	}
  
  	if (of_property_read_bool(node, "ti,set-rate-parent"))
  		flags |= CLK_SET_RATE_PARENT;
  
  	parent_name = of_clk_get_parent_name(node, 0);
  
  	clk = clk_register_fixed_factor(NULL, clk_name, parent_name, flags,
  					mult, div);
  
  	if (!IS_ERR(clk)) {
  		of_clk_add_provider(node, of_clk_src_simple_get, clk);
  		of_ti_clk_autoidle_setup(node);
  	}
  }
  CLK_OF_DECLARE(ti_fixed_factor_clk, "ti,fixed-factor-clock",
  	       of_ti_fixed_factor_clk_setup);