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+/*
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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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+
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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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+
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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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+
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+#include <sound/driver.h>
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+#include <sound/core.h>
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+ int default_rate; /* audio sampling rate */
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+
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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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+
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+ void *private_data;
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+};
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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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+
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+extern void omap_init_eac(struct eac_platform_data *pdata);
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+
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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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+
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+extern int eac_set_mode(struct device *eac_dev, int play, int rec);
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+
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+#endif /* __ASM_ARM_ARCH_OMAP2_EAC_H */
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