1/* 2 * AESS IP block reset 3 * 4 * Copyright (C) 2012 Texas Instruments, Inc. 5 * Paul Walmsley 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation version 2. 10 * 11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 12 * kind, whether express or implied; without even the implied warranty 13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 19 * 02110-1301 USA 20 */ 21#ifndef __SOUND_AESS_H__ 22#define __SOUND_AESS_H__ 23 24#include <linux/kernel.h> 25#include <linux/io.h> 26 27/* 28 * AESS_AUTO_GATING_ENABLE_OFFSET: offset in bytes of the AESS IP 29 * block's AESS_AUTO_GATING_ENABLE__1 register from the IP block's 30 * base address 31 */ 32#define AESS_AUTO_GATING_ENABLE_OFFSET 0x07c 33 34/* Register bitfields in the AESS_AUTO_GATING_ENABLE__1 register */ 35#define AESS_AUTO_GATING_ENABLE_SHIFT 0 36 37/** 38 * aess_enable_autogating - enable AESS internal autogating 39 * @oh: struct omap_hwmod * 40 * 41 * Enable internal autogating on the AESS. This allows the AESS to 42 * indicate that it is idle to the OMAP PRCM. Returns 0. 43 */ 44static inline void aess_enable_autogating(void __iomem *base) 45{ 46 u32 v; 47 48 /* Set AESS_AUTO_GATING_ENABLE__1.ENABLE to allow idle entry */ 49 v = 1 << AESS_AUTO_GATING_ENABLE_SHIFT; 50 writel(v, base + AESS_AUTO_GATING_ENABLE_OFFSET); 51} 52 53#endif /* __SOUND_AESS_H__ */ 54