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Diffstat (limited to 'sound/soc/omap/abe/abe_aess.c')
| -rw-r--r-- | sound/soc/omap/abe/abe_aess.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/sound/soc/omap/abe/abe_aess.c b/sound/soc/omap/abe/abe_aess.c new file mode 100644 index 0000000..eb35b58 --- /dev/null +++ b/sound/soc/omap/abe/abe_aess.c @@ -0,0 +1,191 @@ +/* + + 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); |