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/*
This file is provided under a dual BSD/GPLv2 license. When using or
redistributing this file, you may do so under either license.
GPL LICENSE SUMMARY
Copyright(c) 2010-2011 Texas Instruments Incorporated,
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; 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.
The full GNU General Public License is included in this distribution
in the file called LICENSE.GPL.
BSD LICENSE
Copyright(c) 2010-2011 Texas Instruments Incorporated,
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Texas Instruments Incorporated nor the names of
its contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include "abe_dbg.h"
#include "abe.h"
#include "abe_mem.h"
#include "abe_aess.h"
/**
* omap_abe_hw_configuration
*
*/
void omap_abe_hw_configuration(struct omap_abe *abe)
{
/* enables the DMAreq from AESS AESS_DMAENABLE_SET = 255 */
omap_abe_reg_writel(abe, AESS_DMAENABLE_SET, DMA_ENABLE_ALL);
/* enables the MCU IRQ from AESS to Cortex A9 */
omap_abe_reg_writel(abe, AESS_MCU_IRQENABLE_SET, INT_SET);
}
/**
* omap_abe_clear_irq - clear ABE interrupt
* @abe: Pointer on abe handle
*
* This subroutine is call to clear MCU Irq
*/
int omap_abe_clear_irq(struct omap_abe *abe)
{
omap_abe_reg_writel(abe, ABE_MCU_IRQSTATUS, INT_CLR);
return 0;
}
EXPORT_SYMBOL(omap_abe_clear_irq);
/**
* abe_write_event_generator - Selects event generator source
* @abe: Pointer on abe handle
* @e: Event Generation Counter, McPDM, DMIC or default.
*
* Loads the AESS event generator hardware source.
* Loads the firmware parameters accordingly.
* Indicates to the FW which data stream is the most important to preserve
* in case all the streams are asynchronous.
* If the parameter is "default", then HAL decides which Event source
* is the best appropriate based on the opened ports.
*
* When neither the DMIC and the McPDM are activated, the AE will have
* its EVENT generator programmed with the EVENT_COUNTER.
* The event counter will be tuned in order to deliver a pulse frequency higher
* than 96 kHz.
* The DPLL output at 100% OPP is MCLK = (32768kHz x6000) = 196.608kHz
* The ratio is (MCLK/96000)+(1<<1) = 2050
* (1<<1) in order to have the same speed at 50% and 100% OPP
* (only 15 MSB bits are used at OPP50%)
*/
int omap_abe_write_event_generator(struct omap_abe *abe, u32 e)
{
u32 event, selection;
u32 counter = EVENT_GENERATOR_COUNTER_DEFAULT;
_log(ABE_ID_WRITE_EVENT_GENERATOR, e, 0, 0);
switch (e) {
case EVENT_TIMER:
selection = EVENT_SOURCE_COUNTER;
event = 0;
break;
case EVENT_44100:
selection = EVENT_SOURCE_COUNTER;
event = 0;
counter = EVENT_GENERATOR_COUNTER_44100;
break;
default:
omap_abe_dbg_error(abe, OMAP_ABE_ERR_API, ABE_BLOCK_COPY_ERR);
}
omap_abe_reg_writel(abe, EVENT_GENERATOR_COUNTER, counter);
omap_abe_reg_writel(abe, EVENT_SOURCE_SELECTION, selection);
omap_abe_reg_writel(abe, EVENT_GENERATOR_START, EVENT_GENERATOR_ON);
omap_abe_reg_writel(abe, AUDIO_ENGINE_SCHEDULER, event);
return 0;
}
EXPORT_SYMBOL(omap_abe_write_event_generator);
/**
* omap_abe_start_event_generator - Starts event generator source
* @abe: Pointer on abe handle
*
* Start the event genrator of AESS. No more event will be send to AESS engine.
* Upper layer must wait 1/96kHz to be sure that engine reaches
* the IDLE instruction.
*/
int omap_abe_start_event_generator(struct omap_abe *abe)
{
/* Start the event Generator */
omap_abe_reg_writel(abe, EVENT_GENERATOR_START, 1);
return 0;
}
EXPORT_SYMBOL(omap_abe_start_event_generator);
/**
* omap_abe_stop_event_generator - Stops event generator source
* @abe: Pointer on abe handle
*
* Stop the event genrator of AESS. No more event will be send to AESS engine.
* Upper layer must wait 1/96kHz to be sure that engine reaches
* the IDLE instruction.
*/
int omap_abe_stop_event_generator(struct omap_abe *abe)
{
/* Stop the event Generator */
omap_abe_reg_writel(abe, EVENT_GENERATOR_START, 0);
return 0;
}
EXPORT_SYMBOL(omap_abe_stop_event_generator);
/**
* omap_abe_disable_irq - disable MCU/DSP ABE interrupt
* @abe: Pointer on abe handle
*
* This subroutine is disabling ABE MCU/DSP Irq
*/
int omap_abe_disable_irq(struct omap_abe *abe)
{
/* disables the DMAreq from AESS AESS_DMAENABLE_CLR = 127
* DMA_Req7 will still be enabled as it is used for ABE trace */
omap_abe_reg_writel(abe, AESS_DMAENABLE_CLR, 0x7F);
/* disables the MCU IRQ from AESS to Cortex A9 */
omap_abe_reg_writel(abe, AESS_MCU_IRQENABLE_CLR, 0x01);
return 0;
}
EXPORT_SYMBOL(omap_abe_disable_irq);
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