arch/arm/include/asm/arch-at91/clk.h

   1 /*
   2  * (C) Copyright 2007
   3  * Stelian Pop <stelian@popies.net>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  * Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25 #ifndef __ASM_ARM_ARCH_CLK_H__
  26 #define __ASM_ARM_ARCH_CLK_H__
  27
  28 #include <asm/arch/hardware.h>
  29 #include <asm/global_data.h>
  30
  31 static inline unsigned long get_cpu_clk_rate(void)
  32 {
  33         DECLARE_GLOBAL_DATA_PTR;
  34         return gd->arch.cpu_clk_rate_hz;
  35 }
  36
  37 static inline unsigned long get_main_clk_rate(void)
  38 {
  39         DECLARE_GLOBAL_DATA_PTR;
  40         return gd->arch.main_clk_rate_hz;
  41 }
  42
  43 static inline unsigned long get_mck_clk_rate(void)
  44 {
  45         DECLARE_GLOBAL_DATA_PTR;
  46         return gd->arch.mck_rate_hz;
  47 }
  48
  49 static inline unsigned long get_plla_clk_rate(void)
  50 {
  51         DECLARE_GLOBAL_DATA_PTR;
  52         return gd->arch.plla_rate_hz;
  53 }
  54
  55 static inline unsigned long get_pllb_clk_rate(void)
  56 {
  57         DECLARE_GLOBAL_DATA_PTR;
  58         return gd->arch.pllb_rate_hz;
  59 }
  60
  61 static inline u32 get_pllb_init(void)
  62 {
  63         DECLARE_GLOBAL_DATA_PTR;
  64         return gd->arch.at91_pllb_usb_init;
  65 }
  66
  67 static inline unsigned long get_macb_pclk_rate(unsigned int dev_id)
  68 {
  69         return get_mck_clk_rate();
  70 }
  71
  72 static inline unsigned long get_usart_clk_rate(unsigned int dev_id)
  73 {
  74         return get_mck_clk_rate();
  75 }
  76
  77 static inline unsigned long get_lcdc_clk_rate(unsigned int dev_id)
  78 {
  79         return get_mck_clk_rate();
  80 }
  81
  82 static inline unsigned long get_spi_clk_rate(unsigned int dev_id)
  83 {
  84         return get_mck_clk_rate();
  85 }
  86
  87 static inline unsigned long get_twi_clk_rate(unsigned int dev_id)
  88 {
  89         return get_mck_clk_rate();
  90 }
  91
  92 static inline unsigned long get_mci_clk_rate(void)
  93 {
  94         return get_mck_clk_rate();
  95 }
  96
  97 int at91_clock_init(unsigned long main_clock);
  98 #endif /* __ASM_ARM_ARCH_CLK_H__ */