drivers/clk/mvebu/common.h

   1 /*
   2  * Marvell EBU SoC common clock handling
   3  *
   4  * Copyright (C) 2012 Marvell
   5  *
   6  * Gregory CLEMENT <gregory.clement@free-electrons.com>
   7  * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
   8  * Andrew Lunn <andrew@lunn.ch>
   9  *
  10  * This file is licensed under the terms of the GNU General Public
  11  * License version 2. This program is licensed "as is" without any
  12  * warranty of any kind, whether express or implied.
  13  */
  14
  15 #ifndef __CLK_MVEBU_COMMON_H_
  16 #define __CLK_MVEBU_COMMON_H_
  17
  18 #include <linux/kernel.h>
  19
  20 struct device_node;
  21
  22 struct coreclk_ratio {
  23         int id;
  24         const char *name;
  25 };
  26
  27 struct coreclk_soc_desc {
  28         u32 (*get_tclk_freq)(void __iomem *sar);
  29         u32 (*get_cpu_freq)(void __iomem *sar);
  30         void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div);
  31         const struct coreclk_ratio *ratios;
  32         int num_ratios;
  33 };
  34
  35 struct clk_gating_soc_desc {
  36         const char *name;
  37         const char *parent;
  38         int bit_idx;
  39         unsigned long flags;
  40 };
  41
  42 void __init mvebu_coreclk_setup(struct device_node *np,
  43                                 const struct coreclk_soc_desc *desc);
  44
  45 void __init mvebu_clk_gating_setup(struct device_node *np,
  46                                    const struct clk_gating_soc_desc *desc);
  47
  48 #endif