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
  22 struct clk {
  23         unsigned long rate;
  24 };
  25
  26 int clk_enable(struct clk *clk)
  27 {
  28         return 0;
  29 }
  30
  31 void clk_disable(struct clk *clk)
  32 {}
  33
  34 unsigned long clk_get_rate(struct clk *clk)
  35 {
  36         return clk->rate;
  37 }
  38
  39 long clk_round_rate(struct clk *clk, unsigned long rate)
  40 {
  41         return clk->rate;
  42 }
  43
  44 int clk_set_rate(struct clk *clk, unsigned long rate)
  45 {
  46         return 0;
  47 }
  48
  49 static struct clk eclk = { .rate = 200000000 };
  50 static struct clk pclk = { .rate = 150000000 };
  51
  52 static 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
  59 void __init highbank_clocks_init(void)
  60 {
  61         clkdev_add_table(lookups, ARRAY_SIZE(lookups));
  62 }