/*
   * AESS IP block reset
   *
   * Copyright (C) 2012 Texas Instruments, Inc.
   * Paul Walmsley
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
   * published by the Free Software Foundation version 2.
   *
   * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   * kind, whether express or implied; without even the implied warranty
   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA
   */
  #ifndef __SOUND_AESS_H__
  #define __SOUND_AESS_H__
  
  #include <linux/kernel.h>
  #include <linux/io.h>
  
  /*
   * AESS_AUTO_GATING_ENABLE_OFFSET: offset in bytes of the AESS IP
   *     block's AESS_AUTO_GATING_ENABLE__1 register from the IP block's
   *     base address
   */
  #define AESS_AUTO_GATING_ENABLE_OFFSET			0x07c
  
  /* Register bitfields in the AESS_AUTO_GATING_ENABLE__1 register */
  #define AESS_AUTO_GATING_ENABLE_SHIFT			0
  
  /**
   * aess_enable_autogating - enable AESS internal autogating
   * @oh: struct omap_hwmod *
   *
   * Enable internal autogating on the AESS.  This allows the AESS to
   * indicate that it is idle to the OMAP PRCM.  Returns 0.
   */
  static inline void aess_enable_autogating(void __iomem *base)
  {
  	u32 v;
  
  	/* Set AESS_AUTO_GATING_ENABLE__1.ENABLE to allow idle entry */
  	v = 1 << AESS_AUTO_GATING_ENABLE_SHIFT;
  	writel(v, base + AESS_AUTO_GATING_ENABLE_OFFSET);
  }
  
  #endif /* __SOUND_AESS_H__ */