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kernel/linux-imx6_3.14.28/arch/arm/mach-omap2/smartreflex-class3.c 1.43 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Smart reflex Class 3 specific implementations
   *
   * Author: Thara Gopinath       <thara@ti.com>
   *
   * Copyright (C) 2010 Texas Instruments, Inc.
   * Thara Gopinath <thara@ti.com>
   *
   * 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/power/smartreflex.h>
  #include "soc.h"
  #include "voltage.h"
  
  static int sr_class3_enable(struct omap_sr *sr)
  {
  	unsigned long volt = voltdm_get_voltage(sr->voltdm);
  
  	if (!volt) {
  		pr_warning("%s: Curr voltage unknown. Cannot enable %s
  ",
  				__func__, sr->name);
  		return -ENODATA;
  	}
  
  	omap_vp_enable(sr->voltdm);
  	return sr_enable(sr, volt);
  }
  
  static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
  {
  	sr_disable_errgen(sr);
  	omap_vp_disable(sr->voltdm);
  	sr_disable(sr);
  	if (is_volt_reset)
  		voltdm_reset(sr->voltdm);
  
  	return 0;
  }
  
  static int sr_class3_configure(struct omap_sr *sr)
  {
  	return sr_configure_errgen(sr);
  }
  
  /* SR class3 structure */
  static struct omap_sr_class_data class3_data = {
  	.enable = sr_class3_enable,
  	.disable = sr_class3_disable,
  	.configure = sr_class3_configure,
  	.class_type = SR_CLASS3,
  };
  
  /* Smartreflex Class3 init API to be called from board file */
  static int __init sr_class3_init(void)
  {
  	pr_info("SmartReflex Class3 initialized
  ");
  	return sr_register_class(&class3_data);
  }
  omap_late_initcall(sr_class3_init);