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kernel/linux-imx6_3.14.28/arch/arm/mach-pxa/clock-pxa2xx.c 1.05 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * linux/arch/arm/mach-pxa/clock-pxa2xx.c
   *
   * 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.
   */
  
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/init.h>
  #include <linux/io.h>
  #include <linux/syscore_ops.h>
  
  #include <mach/pxa2xx-regs.h>
  
  #include "clock.h"
  
  void clk_pxa2xx_cken_enable(struct clk *clk)
  {
  	CKEN |= 1 << clk->cken;
  }
  
  void clk_pxa2xx_cken_disable(struct clk *clk)
  {
  	CKEN &= ~(1 << clk->cken);
  }
  
  const struct clkops clk_pxa2xx_cken_ops = {
  	.enable		= clk_pxa2xx_cken_enable,
  	.disable	= clk_pxa2xx_cken_disable,
  };
  
  #ifdef CONFIG_PM
  static uint32_t saved_cken;
  
  static int pxa2xx_clock_suspend(void)
  {
  	saved_cken = CKEN;
  	return 0;
  }
  
  static void pxa2xx_clock_resume(void)
  {
  	CKEN = saved_cken;
  }
  #else
  #define pxa2xx_clock_suspend	NULL
  #define pxa2xx_clock_resume	NULL
  #endif
  
  struct syscore_ops pxa2xx_clock_syscore_ops = {
  	.suspend	= pxa2xx_clock_suspend,
  	.resume		= pxa2xx_clock_resume,
  };