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  */
aess_enable_autogating(void __iomem * base)44 static 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