LXR linux/arch/arm/mach-highbank/clock.c

   1/*
   2 * Copyright 2011 Calxeda, Inc.
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms and conditions of the GNU General Public License,
   6 * version 2, as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope it will be useful, but WITHOUT
   9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11 * more details.
  12 *
  13 * You should have received a copy of the GNU General Public License along with
  14 * this program.  If not, see <http://www.gnu.org/licenses/>.
  15 */
  16#include <linux/module.h>
  17#include <linux/kernel.h>
  18#include <linux/errno.h>
  19#include <linux/clk.h>
  20#include <linux/clkdev.h>
  21
  22struct clk {
  23        unsigned long rate;
  24};
  25
  26int clk_enable(struct clk *clk)
  27{
  28        return 0;
  29}
  30
  31void clk_disable(struct clk *clk)
  32{}
  33
  34unsigned long clk_get_rate(struct clk *clk)
  35{
  36        return clk->rate;
  37}
  38
  39long clk_round_rate(struct clk *clk, unsigned long rate)
  40{
  41        return clk->rate;
  42}
  43
  44int clk_set_rate(struct clk *clk, unsigned long rate)
  45{
  46        return 0;
  47}
  48
  49static struct clk eclk = { .rate = 200000000 };
  50static struct clk pclk = { .rate = 150000000 };
  51
  52static struct clk_lookup lookups[] = {
  53        { .clk = &pclk, .con_id = "apb_pclk", },
  54        { .clk = &pclk, .dev_id = "sp804", },
  55        { .clk = &eclk, .dev_id = "ffe0e000.sdhci", },
  56        { .clk = &pclk, .dev_id = "fff36000.serial", },
  57};
  58
  59void __init highbank_clocks_init(void)
  60{
  61        clkdev_add_table(lookups, ARRAY_SIZE(lookups));
  62}
  63