1 files changed, 101 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/eac.h b/include/asm-arm/arch-omap/eac.h
new file mode 100644
index 000000000000..6662cb02bafc
--- /dev/null
+++ b/include/asm-arm/arch-omap/eac.h
@@ -0,0 +1,101 @@
+/*
+ * linux/include/asm-arm/arch-omap2/eac.h
+ *
+ * Defines for Enhanced Audio Controller
+ *
+ * Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
+ *
+ * Copyright (C) 2006 Nokia Corporation
+ * Copyright (C) 2004 Texas Instruments, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 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
+ *
+ */
+
+#ifndef __ASM_ARM_ARCH_OMAP2_EAC_H
+#define __ASM_ARM_ARCH_OMAP2_EAC_H
+
+#include <asm/arch/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/irq.h>
+
+#include <sound/driver.h>
+#include <sound/core.h>
+
+/* master codec clock source */
+#define EAC_MCLK_EXT_MASK	0x100
+enum eac_mclk_src {
+	EAC_MCLK_INT_11290000, /* internal 96 MHz / 8.5 = 11.29 Mhz */
+	EAC_MCLK_EXT_11289600 = EAC_MCLK_EXT_MASK,
+	EAC_MCLK_EXT_12288000,
+	EAC_MCLK_EXT_2x11289600,
+	EAC_MCLK_EXT_2x12288000,
+};
+
+/* codec port interface mode */
+enum eac_codec_mode {
+	EAC_CODEC_PCM,
+	EAC_CODEC_AC97,
+	EAC_CODEC_I2S_MASTER, /* codec port, I.e. EAC is the master */
+	EAC_CODEC_I2S_SLAVE,
+};
+
+/* configuration structure for I2S mode */
+struct eac_i2s_conf {
+	/* if enabled, then first data slot (left channel) is signaled as
+	 * positive level of frame sync EAC.AC_FS */
+	unsigned	polarity_changed_mode:1;
+	/* if enabled, then serial data starts one clock cycle after the
+	 * of EAC.AC_FS for first audio slot */
+	unsigned	sync_delay_enable:1;
+};
+
+/* configuration structure for EAC codec port */
+struct eac_codec {
+	enum eac_mclk_src	mclk_src;
+
+	enum eac_codec_mode	codec_mode;
+	union {
+		struct eac_i2s_conf	i2s;
+	} codec_conf;
+
+	int		default_rate; /* audio sampling rate */
+
+	int		(* set_power)(void *private_data, int dac, int adc);
+	int		(* register_controls)(void *private_data,
+					      struct snd_card *card);
+	const char 	*short_name;
+
+	void		*private_data;
+};
+
+/* structure for passing platform dependent data to the EAC driver */
+struct eac_platform_data {
+        int	(* init)(struct device *eac_dev);
+	void	(* cleanup)(struct device *eac_dev);
+	/* these callbacks are used to configure & control external MCLK
+	 * source. NULL if not used */
+	int	(* enable_ext_clocks)(struct device *eac_dev);
+	void	(* disable_ext_clocks)(struct device *eac_dev);
+};
+
+extern void omap_init_eac(struct eac_platform_data *pdata);
+
+extern int eac_register_codec(struct device *eac_dev, struct eac_codec *codec);
+extern void eac_unregister_codec(struct device *eac_dev);
+
+extern int eac_set_mode(struct device *eac_dev, int play, int rec);
+
+#endif /* __ASM_ARM_ARCH_OMAP2_EAC_H */