mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-17 17:53:56 +08:00
cf8ba17154
Add a basic header file for the TI AESS IP block, located in the OMAP4 Audio Back-End subsystem. Currently, this header file only contains a function to enable the AESS internal clock auto-gating. This will be used by a subsequent patch to ensure that the AESS won't block the entire chip low-power-idle mode. We wish to be able to place the AESS into idle even when no AESS driver has been compiled in. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Liam Girdwood <lrg@ti.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Péter Ujfalusi <peter.ujfalusi@ti.com> Cc: Tony Lindgren <tony@atomide.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
|
|
* 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__ */
|