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