101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/*
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* linux/include/asm-arm/arch-omap2/eac.h
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*
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* Defines for Enhanced Audio Controller
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*
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* Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
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*
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* Copyright (C) 2006 Nokia Corporation
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* Copyright (C) 2004 Texas Instruments, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __ASM_ARM_ARCH_OMAP2_EAC_H
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#define __ASM_ARM_ARCH_OMAP2_EAC_H
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#include <asm/arch/io.h>
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#include <asm/arch/hardware.h>
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#include <asm/irq.h>
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#include <sound/core.h>
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/* master codec clock source */
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#define EAC_MCLK_EXT_MASK 0x100
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enum eac_mclk_src {
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EAC_MCLK_INT_11290000, /* internal 96 MHz / 8.5 = 11.29 Mhz */
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EAC_MCLK_EXT_11289600 = EAC_MCLK_EXT_MASK,
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EAC_MCLK_EXT_12288000,
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EAC_MCLK_EXT_2x11289600,
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EAC_MCLK_EXT_2x12288000,
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};
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/* codec port interface mode */
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enum eac_codec_mode {
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EAC_CODEC_PCM,
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EAC_CODEC_AC97,
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EAC_CODEC_I2S_MASTER, /* codec port, I.e. EAC is the master */
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EAC_CODEC_I2S_SLAVE,
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};
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/* configuration structure for I2S mode */
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struct eac_i2s_conf {
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/* if enabled, then first data slot (left channel) is signaled as
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* positive level of frame sync EAC.AC_FS */
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unsigned polarity_changed_mode:1;
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/* if enabled, then serial data starts one clock cycle after the
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* of EAC.AC_FS for first audio slot */
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unsigned sync_delay_enable:1;
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};
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/* configuration structure for EAC codec port */
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struct eac_codec {
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enum eac_mclk_src mclk_src;
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enum eac_codec_mode codec_mode;
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union {
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struct eac_i2s_conf i2s;
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} codec_conf;
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int default_rate; /* audio sampling rate */
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int (* set_power)(void *private_data, int dac, int adc);
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int (* register_controls)(void *private_data,
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struct snd_card *card);
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const char *short_name;
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void *private_data;
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};
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/* structure for passing platform dependent data to the EAC driver */
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struct eac_platform_data {
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int (* init)(struct device *eac_dev);
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void (* cleanup)(struct device *eac_dev);
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/* these callbacks are used to configure & control external MCLK
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* source. NULL if not used */
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int (* enable_ext_clocks)(struct device *eac_dev);
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void (* disable_ext_clocks)(struct device *eac_dev);
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};
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extern void omap_init_eac(struct eac_platform_data *pdata);
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extern int eac_register_codec(struct device *eac_dev, struct eac_codec *codec);
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extern void eac_unregister_codec(struct device *eac_dev);
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extern int eac_set_mode(struct device *eac_dev, int play, int rec);
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#endif /* __ASM_ARM_ARCH_OMAP2_EAC_H */
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