include/asm-arm/arch-omap/mcbsp.h - arm/linux - Git at Google

 /*
  * linux/include/asm-arm/arch-omap/mcbsp.h
  *
  * Defines for Multi-Channel Buffered Serial Port
  *
  * Copyright (C) 2002 RidgeRun, Inc.
  * Author: Steve Johnson
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  *
  */
 #ifndef __ASM_ARCH_OMAP_MCBSP_H
 #define __ASM_ARCH_OMAP_MCBSP_H

 #include <linux/completion.h>
 #include <linux/spinlock.h>

 #include <asm/hardware.h>
 #include <asm/arch/clock.h>

 #define OMAP730_MCBSP1_BASE	0xfffb1000
 #define OMAP730_MCBSP2_BASE	0xfffb1800

 #define OMAP1510_MCBSP1_BASE	0xe1011800
 #define OMAP1510_MCBSP2_BASE	0xfffb1000
 #define OMAP1510_MCBSP3_BASE	0xe1017000

 #define OMAP1610_MCBSP1_BASE	0xe1011800
 #define OMAP1610_MCBSP2_BASE	0xfffb1000
 #define OMAP1610_MCBSP3_BASE	0xe1017000

 #define OMAP24XX_MCBSP1_BASE	0x48074000
 #define OMAP24XX_MCBSP2_BASE	0x48076000

 #define OMAP34XX_MCBSP1_BASE	0x48074000
 #define OMAP34XX_MCBSP2_BASE	0x49022000

 #if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP730)

 #define OMAP_MCBSP_REG_DRR2	0x00
 #define OMAP_MCBSP_REG_DRR1	0x02
 #define OMAP_MCBSP_REG_DXR2	0x04
 #define OMAP_MCBSP_REG_DXR1	0x06
 #define OMAP_MCBSP_REG_SPCR2	0x08
 #define OMAP_MCBSP_REG_SPCR1	0x0a
 #define OMAP_MCBSP_REG_RCR2	0x0c
 #define OMAP_MCBSP_REG_RCR1	0x0e
 #define OMAP_MCBSP_REG_XCR2	0x10
 #define OMAP_MCBSP_REG_XCR1	0x12
 #define OMAP_MCBSP_REG_SRGR2	0x14
 #define OMAP_MCBSP_REG_SRGR1	0x16
 #define OMAP_MCBSP_REG_MCR2	0x18
 #define OMAP_MCBSP_REG_MCR1	0x1a
 #define OMAP_MCBSP_REG_RCERA	0x1c
 #define OMAP_MCBSP_REG_RCERB	0x1e
 #define OMAP_MCBSP_REG_XCERA	0x20
 #define OMAP_MCBSP_REG_XCERB	0x22
 #define OMAP_MCBSP_REG_PCR0	0x24
 #define OMAP_MCBSP_REG_RCERC	0x26
 #define OMAP_MCBSP_REG_RCERD	0x28
 #define OMAP_MCBSP_REG_XCERC	0x2A
 #define OMAP_MCBSP_REG_XCERD	0x2C
 #define OMAP_MCBSP_REG_RCERE	0x2E
 #define OMAP_MCBSP_REG_RCERF	0x30
 #define OMAP_MCBSP_REG_XCERE	0x32
 #define OMAP_MCBSP_REG_XCERF	0x34
 #define OMAP_MCBSP_REG_RCERG	0x36
 #define OMAP_MCBSP_REG_RCERH	0x38
 #define OMAP_MCBSP_REG_XCERG	0x3A
 #define OMAP_MCBSP_REG_XCERH	0x3C

 #define OMAP_MAX_MCBSP_COUNT	3
 #define MAX_MCBSP_CLOCKS	3

 #define AUDIO_MCBSP_DATAWRITE	(OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1)
 #define AUDIO_MCBSP_DATAREAD	(OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DRR1)

 #define AUDIO_MCBSP		OMAP_MCBSP1
 #define AUDIO_DMA_TX		OMAP_DMA_MCBSP1_TX
 #define AUDIO_DMA_RX		OMAP_DMA_MCBSP1_RX

 #elif defined(CONFIG_ARCH_OMAP24XX)

 #define OMAP_MCBSP_REG_DRR2	0x00
 #define OMAP_MCBSP_REG_DRR1	0x04
 #define OMAP_MCBSP_REG_DXR2	0x08
 #define OMAP_MCBSP_REG_DXR1	0x0C
 #define OMAP_MCBSP_REG_SPCR2	0x10
 #define OMAP_MCBSP_REG_SPCR1	0x14
 #define OMAP_MCBSP_REG_RCR2	0x18
 #define OMAP_MCBSP_REG_RCR1	0x1C
 #define OMAP_MCBSP_REG_XCR2	0x20
 #define OMAP_MCBSP_REG_XCR1	0x24
 #define OMAP_MCBSP_REG_SRGR2	0x28
 #define OMAP_MCBSP_REG_SRGR1	0x2C
 #define OMAP_MCBSP_REG_MCR2	0x30
 #define OMAP_MCBSP_REG_MCR1	0x34
 #define OMAP_MCBSP_REG_RCERA	0x38
 #define OMAP_MCBSP_REG_RCERB	0x3C
 #define OMAP_MCBSP_REG_XCERA	0x40
 #define OMAP_MCBSP_REG_XCERB	0x44
 #define OMAP_MCBSP_REG_PCR0	0x48
 #define OMAP_MCBSP_REG_RCERC	0x4C
 #define OMAP_MCBSP_REG_RCERD	0x50
 #define OMAP_MCBSP_REG_XCERC	0x54
 #define OMAP_MCBSP_REG_XCERD	0x58
 #define OMAP_MCBSP_REG_RCERE	0x5C
 #define OMAP_MCBSP_REG_RCERF	0x60
 #define OMAP_MCBSP_REG_XCERE	0x64
 #define OMAP_MCBSP_REG_XCERF	0x68
 #define OMAP_MCBSP_REG_RCERG	0x6C
 #define OMAP_MCBSP_REG_RCERH	0x70
 #define OMAP_MCBSP_REG_XCERG	0x74
 #define OMAP_MCBSP_REG_XCERH	0x78

 #define OMAP_MAX_MCBSP_COUNT	2
 #define MAX_MCBSP_CLOCKS	2

 #define AUDIO_MCBSP_DATAWRITE	(OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR1)
 #define AUDIO_MCBSP_DATAREAD	(OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR1)

 #define AUDIO_MCBSP		OMAP_MCBSP2
 #define AUDIO_DMA_TX		OMAP24XX_DMA_MCBSP2_TX
 #define AUDIO_DMA_RX		OMAP24XX_DMA_MCBSP2_RX

 #endif

 #define OMAP_MCBSP_READ(base, reg)		__raw_readw((base) + OMAP_MCBSP_REG_##reg)
 #define OMAP_MCBSP_WRITE(base, reg, val)	__raw_writew((val), (base) + OMAP_MCBSP_REG_##reg)


 /************************** McBSP SPCR1 bit definitions ***********************/
 #define RRST			0x0001
 #define RRDY			0x0002
 #define RFULL			0x0004
 #define RSYNC_ERR		0x0008
 #define RINTM(value)		((value)<<4)	/* bits 4:5 */
 #define ABIS			0x0040
 #define DXENA			0x0080
 #define CLKSTP(value)		((value)<<11)	/* bits 11:12 */
 #define RJUST(value)		((value)<<13)	/* bits 13:14 */
 #define DLB			0x8000

 /************************** McBSP SPCR2 bit definitions ***********************/
 #define XRST		0x0001
 #define XRDY		0x0002
 #define XEMPTY		0x0004
 #define XSYNC_ERR	0x0008
 #define XINTM(value)	((value)<<4)		/* bits 4:5 */
 #define GRST		0x0040
 #define FRST		0x0080
 #define SOFT		0x0100
 #define FREE		0x0200

 /************************** McBSP PCR bit definitions *************************/
 #define CLKRP		0x0001
 #define CLKXP		0x0002
 #define FSRP		0x0004
 #define FSXP		0x0008
 #define DR_STAT		0x0010
 #define DX_STAT		0x0020
 #define CLKS_STAT	0x0040
 #define SCLKME		0x0080
 #define CLKRM		0x0100
 #define CLKXM		0x0200
 #define FSRM		0x0400
 #define FSXM		0x0800
 #define RIOEN		0x1000
 #define XIOEN		0x2000
 #define IDLE_EN		0x4000

 /************************** McBSP RCR1 bit definitions ************************/
 #define RWDLEN1(value)		((value)<<5)	/* Bits 5:7 */
 #define RFRLEN1(value)		((value)<<8)	/* Bits 8:14 */

 /************************** McBSP XCR1 bit definitions ************************/
 #define XWDLEN1(value)		((value)<<5)	/* Bits 5:7 */
 #define XFRLEN1(value)		((value)<<8)	/* Bits 8:14 */

 /*************************** McBSP RCR2 bit definitions ***********************/
 #define RDATDLY(value)		(value)		/* Bits 0:1 */
 #define RFIG			0x0004
 #define RCOMPAND(value)		((value)<<3)	/* Bits 3:4 */
 #define RWDLEN2(value)		((value)<<5)	/* Bits 5:7 */
 #define RFRLEN2(value)		((value)<<8)	/* Bits 8:14 */
 #define RPHASE			0x8000

 /*************************** McBSP XCR2 bit definitions ***********************/
 #define XDATDLY(value)		(value)		/* Bits 0:1 */
 #define XFIG			0x0004
 #define XCOMPAND(value)		((value)<<3)	/* Bits 3:4 */
 #define XWDLEN2(value)		((value)<<5)	/* Bits 5:7 */
 #define XFRLEN2(value)		((value)<<8)	/* Bits 8:14 */
 #define XPHASE			0x8000

 /************************* McBSP SRGR1 bit definitions ************************/
 #define CLKGDV(value)		(value)		/* Bits 0:7 */
 #define FWID(value)		((value)<<8)	/* Bits 8:15 */

 /************************* McBSP SRGR2 bit definitions ************************/
 #define FPER(value)		(value)		/* Bits 0:11 */
 #define FSGM			0x1000
 #define CLKSM			0x2000
 #define CLKSP			0x4000
 #define GSYNC			0x8000

 /************************* McBSP MCR1 bit definitions *************************/
 #define RMCM			0x0001
 #define RCBLK(value)		((value)<<2)	/* Bits 2:4 */
 #define RPABLK(value)		((value)<<5)	/* Bits 5:6 */
 #define RPBBLK(value)		((value)<<7)	/* Bits 7:8 */

 /************************* McBSP MCR2 bit definitions *************************/
 #define XMCM(value)		(value)		/* Bits 0:1 */
 #define XCBLK(value)		((value)<<2)	/* Bits 2:4 */
 #define XPABLK(value)		((value)<<5)	/* Bits 5:6 */
 #define XPBBLK(value)		((value)<<7)	/* Bits 7:8 */


 /* we don't do multichannel for now */
 struct omap_mcbsp_reg_cfg {
 	u16 spcr2;
 	u16 spcr1;
 	u16 rcr2;
 	u16 rcr1;
 	u16 xcr2;
 	u16 xcr1;
 	u16 srgr2;
 	u16 srgr1;
 	u16 mcr2;
 	u16 mcr1;
 	u16 pcr0;
 	u16 rcerc;
 	u16 rcerd;
 	u16 xcerc;
 	u16 xcerd;
 	u16 rcere;
 	u16 rcerf;
 	u16 xcere;
 	u16 xcerf;
 	u16 rcerg;
 	u16 rcerh;
 	u16 xcerg;
 	u16 xcerh;
 };

 typedef enum {
 	OMAP_MCBSP1 = 0,
 	OMAP_MCBSP2,
 	OMAP_MCBSP3,
 } omap_mcbsp_id;

 typedef int __bitwise omap_mcbsp_io_type_t;
 #define OMAP_MCBSP_IRQ_IO ((__force omap_mcbsp_io_type_t) 1)
 #define OMAP_MCBSP_POLL_IO ((__force omap_mcbsp_io_type_t) 2)

 typedef enum {
 	OMAP_MCBSP_WORD_8 = 0,
 	OMAP_MCBSP_WORD_12,
 	OMAP_MCBSP_WORD_16,
 	OMAP_MCBSP_WORD_20,
 	OMAP_MCBSP_WORD_24,
 	OMAP_MCBSP_WORD_32,
 } omap_mcbsp_word_length;

 typedef enum {
 	OMAP_MCBSP_CLK_RISING = 0,
 	OMAP_MCBSP_CLK_FALLING,
 } omap_mcbsp_clk_polarity;

 typedef enum {
 	OMAP_MCBSP_FS_ACTIVE_HIGH = 0,
 	OMAP_MCBSP_FS_ACTIVE_LOW,
 } omap_mcbsp_fs_polarity;

 typedef enum {
 	OMAP_MCBSP_CLK_STP_MODE_NO_DELAY = 0,
 	OMAP_MCBSP_CLK_STP_MODE_DELAY,
 } omap_mcbsp_clk_stp_mode;


 /******* SPI specific mode **********/
 typedef enum {
 	OMAP_MCBSP_SPI_MASTER = 0,
 	OMAP_MCBSP_SPI_SLAVE,
 } omap_mcbsp_spi_mode;

 struct omap_mcbsp_spi_cfg {
 	omap_mcbsp_spi_mode		spi_mode;
 	omap_mcbsp_clk_polarity		rx_clock_polarity;
 	omap_mcbsp_clk_polarity		tx_clock_polarity;
 	omap_mcbsp_fs_polarity		fsx_polarity;
 	u8				clk_div;
 	omap_mcbsp_clk_stp_mode		clk_stp_mode;
 	omap_mcbsp_word_length		word_length;
 };

 /* Platform specific configuration */
 struct omap_mcbsp_ops {
 	void (*request)(unsigned int);
 	void (*free)(unsigned int);
 	int (*check)(unsigned int);
 };

 struct omap_mcbsp_platform_data {
 	u32 virt_base;
 	u8 dma_rx_sync, dma_tx_sync;
 	u16 rx_irq, tx_irq;
 	struct omap_mcbsp_ops *ops;
 	char const *clk_name;
 };

 struct omap_mcbsp {
 	struct device *dev;
 	u32 io_base;
 	u8 id;
 	u8 free;
 	omap_mcbsp_word_length rx_word_length;
 	omap_mcbsp_word_length tx_word_length;

 	omap_mcbsp_io_type_t io_type; /* IRQ or poll */
 	/* IRQ based TX/RX */
 	int rx_irq;
 	int tx_irq;

 	/* DMA stuff */
 	u8 dma_rx_sync;
 	short dma_rx_lch;
 	u8 dma_tx_sync;
 	short dma_tx_lch;

 	/* Completion queues */
 	struct completion tx_irq_completion;
 	struct completion rx_irq_completion;
 	struct completion tx_dma_completion;
 	struct completion rx_dma_completion;

 	/* Protect the field .free, while checking if the mcbsp is in use */
 	spinlock_t lock;
 	struct omap_mcbsp_platform_data *pdata;
 	struct clk *clk;
 };

 int omap_mcbsp_init(void);
 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 					int size);
 void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config);
 int omap_mcbsp_request(unsigned int id);
 void omap_mcbsp_free(unsigned int id);
 void omap_mcbsp_start(unsigned int id);
 void omap_mcbsp_stop(unsigned int id);
 void omap_mcbsp_xmit_word(unsigned int id, u32 word);
 u32 omap_mcbsp_recv_word(unsigned int id);

 int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, unsigned int length);
 int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, unsigned int length);
 int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word);
 int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 * word);


 /* SPI specific API */
 void omap_mcbsp_set_spi_mode(unsigned int id, const struct omap_mcbsp_spi_cfg * spi_cfg);

 /* Polled read/write functions */
 int omap_mcbsp_pollread(unsigned int id, u16 * buf);
 int omap_mcbsp_pollwrite(unsigned int id, u16 buf);

 #endif
	/*
	* linux/include/asm-arm/arch-omap/mcbsp.h
	*
	* Defines for Multi-Channel Buffered Serial Port
	*
	* Copyright (C) 2002 RidgeRun, Inc.
	* Author: Steve Johnson
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*
	*/
	#ifndef __ASM_ARCH_OMAP_MCBSP_H
	#define __ASM_ARCH_OMAP_MCBSP_H

	#include <linux/completion.h>
	#include <linux/spinlock.h>

	#include <asm/hardware.h>
	#include <asm/arch/clock.h>

	#define OMAP730_MCBSP1_BASE 0xfffb1000
	#define OMAP730_MCBSP2_BASE 0xfffb1800

	#define OMAP1510_MCBSP1_BASE 0xe1011800
	#define OMAP1510_MCBSP2_BASE 0xfffb1000
	#define OMAP1510_MCBSP3_BASE 0xe1017000

	#define OMAP1610_MCBSP1_BASE 0xe1011800
	#define OMAP1610_MCBSP2_BASE 0xfffb1000
	#define OMAP1610_MCBSP3_BASE 0xe1017000

	#define OMAP24XX_MCBSP1_BASE 0x48074000
	#define OMAP24XX_MCBSP2_BASE 0x48076000

	#define OMAP34XX_MCBSP1_BASE 0x48074000
	#define OMAP34XX_MCBSP2_BASE 0x49022000

	#if defined(CONFIG_ARCH_OMAP15XX) \|\| defined(CONFIG_ARCH_OMAP16XX) \|\| defined(CONFIG_ARCH_OMAP730)

	#define OMAP_MCBSP_REG_DRR2 0x00
	#define OMAP_MCBSP_REG_DRR1 0x02
	#define OMAP_MCBSP_REG_DXR2 0x04
	#define OMAP_MCBSP_REG_DXR1 0x06
	#define OMAP_MCBSP_REG_SPCR2 0x08
	#define OMAP_MCBSP_REG_SPCR1 0x0a
	#define OMAP_MCBSP_REG_RCR2 0x0c
	#define OMAP_MCBSP_REG_RCR1 0x0e
	#define OMAP_MCBSP_REG_XCR2 0x10
	#define OMAP_MCBSP_REG_XCR1 0x12
	#define OMAP_MCBSP_REG_SRGR2 0x14
	#define OMAP_MCBSP_REG_SRGR1 0x16
	#define OMAP_MCBSP_REG_MCR2 0x18
	#define OMAP_MCBSP_REG_MCR1 0x1a
	#define OMAP_MCBSP_REG_RCERA 0x1c
	#define OMAP_MCBSP_REG_RCERB 0x1e
	#define OMAP_MCBSP_REG_XCERA 0x20
	#define OMAP_MCBSP_REG_XCERB 0x22
	#define OMAP_MCBSP_REG_PCR0 0x24
	#define OMAP_MCBSP_REG_RCERC 0x26
	#define OMAP_MCBSP_REG_RCERD 0x28
	#define OMAP_MCBSP_REG_XCERC 0x2A
	#define OMAP_MCBSP_REG_XCERD 0x2C
	#define OMAP_MCBSP_REG_RCERE 0x2E
	#define OMAP_MCBSP_REG_RCERF 0x30
	#define OMAP_MCBSP_REG_XCERE 0x32
	#define OMAP_MCBSP_REG_XCERF 0x34
	#define OMAP_MCBSP_REG_RCERG 0x36
	#define OMAP_MCBSP_REG_RCERH 0x38
	#define OMAP_MCBSP_REG_XCERG 0x3A
	#define OMAP_MCBSP_REG_XCERH 0x3C

	#define OMAP_MAX_MCBSP_COUNT 3
	#define MAX_MCBSP_CLOCKS 3

	#define AUDIO_MCBSP_DATAWRITE (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1)
	#define AUDIO_MCBSP_DATAREAD (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DRR1)

	#define AUDIO_MCBSP OMAP_MCBSP1
	#define AUDIO_DMA_TX OMAP_DMA_MCBSP1_TX
	#define AUDIO_DMA_RX OMAP_DMA_MCBSP1_RX

	#elif defined(CONFIG_ARCH_OMAP24XX)

	#define OMAP_MCBSP_REG_DRR2 0x00
	#define OMAP_MCBSP_REG_DRR1 0x04
	#define OMAP_MCBSP_REG_DXR2 0x08
	#define OMAP_MCBSP_REG_DXR1 0x0C
	#define OMAP_MCBSP_REG_SPCR2 0x10
	#define OMAP_MCBSP_REG_SPCR1 0x14
	#define OMAP_MCBSP_REG_RCR2 0x18
	#define OMAP_MCBSP_REG_RCR1 0x1C
	#define OMAP_MCBSP_REG_XCR2 0x20
	#define OMAP_MCBSP_REG_XCR1 0x24
	#define OMAP_MCBSP_REG_SRGR2 0x28
	#define OMAP_MCBSP_REG_SRGR1 0x2C
	#define OMAP_MCBSP_REG_MCR2 0x30
	#define OMAP_MCBSP_REG_MCR1 0x34
	#define OMAP_MCBSP_REG_RCERA 0x38
	#define OMAP_MCBSP_REG_RCERB 0x3C
	#define OMAP_MCBSP_REG_XCERA 0x40
	#define OMAP_MCBSP_REG_XCERB 0x44
	#define OMAP_MCBSP_REG_PCR0 0x48
	#define OMAP_MCBSP_REG_RCERC 0x4C
	#define OMAP_MCBSP_REG_RCERD 0x50
	#define OMAP_MCBSP_REG_XCERC 0x54
	#define OMAP_MCBSP_REG_XCERD 0x58
	#define OMAP_MCBSP_REG_RCERE 0x5C
	#define OMAP_MCBSP_REG_RCERF 0x60
	#define OMAP_MCBSP_REG_XCERE 0x64
	#define OMAP_MCBSP_REG_XCERF 0x68
	#define OMAP_MCBSP_REG_RCERG 0x6C
	#define OMAP_MCBSP_REG_RCERH 0x70
	#define OMAP_MCBSP_REG_XCERG 0x74
	#define OMAP_MCBSP_REG_XCERH 0x78

	#define OMAP_MAX_MCBSP_COUNT 2
	#define MAX_MCBSP_CLOCKS 2

	#define AUDIO_MCBSP_DATAWRITE (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR1)
	#define AUDIO_MCBSP_DATAREAD (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR1)

	#define AUDIO_MCBSP OMAP_MCBSP2
	#define AUDIO_DMA_TX OMAP24XX_DMA_MCBSP2_TX
	#define AUDIO_DMA_RX OMAP24XX_DMA_MCBSP2_RX

	#endif

	#define OMAP_MCBSP_READ(base, reg) __raw_readw((base) + OMAP_MCBSP_REG_##reg)
	#define OMAP_MCBSP_WRITE(base, reg, val) __raw_writew((val), (base) + OMAP_MCBSP_REG_##reg)


	/************************ McBSP SPCR1 bit definitions *********************/
	#define RRST 0x0001
	#define RRDY 0x0002
	#define RFULL 0x0004
	#define RSYNC_ERR 0x0008
	#define RINTM(value) ((value)<<4) /* bits 4:5 */
	#define ABIS 0x0040
	#define DXENA 0x0080
	#define CLKSTP(value) ((value)<<11) /* bits 11:12 */
	#define RJUST(value) ((value)<<13) /* bits 13:14 */
	#define DLB 0x8000

	/************************ McBSP SPCR2 bit definitions *********************/
	#define XRST 0x0001
	#define XRDY 0x0002
	#define XEMPTY 0x0004
	#define XSYNC_ERR 0x0008
	#define XINTM(value) ((value)<<4) /* bits 4:5 */
	#define GRST 0x0040
	#define FRST 0x0080
	#define SOFT 0x0100
	#define FREE 0x0200

	/************************ McBSP PCR bit definitions ***********************/
	#define CLKRP 0x0001
	#define CLKXP 0x0002
	#define FSRP 0x0004
	#define FSXP 0x0008
	#define DR_STAT 0x0010
	#define DX_STAT 0x0020
	#define CLKS_STAT 0x0040
	#define SCLKME 0x0080
	#define CLKRM 0x0100
	#define CLKXM 0x0200
	#define FSRM 0x0400
	#define FSXM 0x0800
	#define RIOEN 0x1000
	#define XIOEN 0x2000
	#define IDLE_EN 0x4000

	/************************ McBSP RCR1 bit definitions **********************/
	#define RWDLEN1(value) ((value)<<5) /* Bits 5:7 */
	#define RFRLEN1(value) ((value)<<8) /* Bits 8:14 */

	/************************ McBSP XCR1 bit definitions **********************/
	#define XWDLEN1(value) ((value)<<5) /* Bits 5:7 */
	#define XFRLEN1(value) ((value)<<8) /* Bits 8:14 */

	/************************* McBSP RCR2 bit definitions *********************/
	#define RDATDLY(value) (value) /* Bits 0:1 */
	#define RFIG 0x0004
	#define RCOMPAND(value) ((value)<<3) /* Bits 3:4 */
	#define RWDLEN2(value) ((value)<<5) /* Bits 5:7 */
	#define RFRLEN2(value) ((value)<<8) /* Bits 8:14 */
	#define RPHASE 0x8000

	/************************* McBSP XCR2 bit definitions *********************/
	#define XDATDLY(value) (value) /* Bits 0:1 */
	#define XFIG 0x0004
	#define XCOMPAND(value) ((value)<<3) /* Bits 3:4 */
	#define XWDLEN2(value) ((value)<<5) /* Bits 5:7 */
	#define XFRLEN2(value) ((value)<<8) /* Bits 8:14 */
	#define XPHASE 0x8000

	/*********************** McBSP SRGR1 bit definitions **********************/
	#define CLKGDV(value) (value) /* Bits 0:7 */
	#define FWID(value) ((value)<<8) /* Bits 8:15 */

	/*********************** McBSP SRGR2 bit definitions **********************/
	#define FPER(value) (value) /* Bits 0:11 */
	#define FSGM 0x1000
	#define CLKSM 0x2000
	#define CLKSP 0x4000
	#define GSYNC 0x8000

	/*********************** McBSP MCR1 bit definitions ***********************/
	#define RMCM 0x0001
	#define RCBLK(value) ((value)<<2) /* Bits 2:4 */
	#define RPABLK(value) ((value)<<5) /* Bits 5:6 */
	#define RPBBLK(value) ((value)<<7) /* Bits 7:8 */

	/*********************** McBSP MCR2 bit definitions ***********************/
	#define XMCM(value) (value) /* Bits 0:1 */
	#define XCBLK(value) ((value)<<2) /* Bits 2:4 */
	#define XPABLK(value) ((value)<<5) /* Bits 5:6 */
	#define XPBBLK(value) ((value)<<7) /* Bits 7:8 */


	/* we don't do multichannel for now */
	struct omap_mcbsp_reg_cfg {
	u16 spcr2;
	u16 spcr1;
	u16 rcr2;
	u16 rcr1;
	u16 xcr2;
	u16 xcr1;
	u16 srgr2;
	u16 srgr1;
	u16 mcr2;
	u16 mcr1;
	u16 pcr0;
	u16 rcerc;
	u16 rcerd;
	u16 xcerc;
	u16 xcerd;
	u16 rcere;
	u16 rcerf;
	u16 xcere;
	u16 xcerf;
	u16 rcerg;
	u16 rcerh;
	u16 xcerg;
	u16 xcerh;
	};

	typedef enum {
	OMAP_MCBSP1 = 0,
	OMAP_MCBSP2,
	OMAP_MCBSP3,
	} omap_mcbsp_id;

	typedef int __bitwise omap_mcbsp_io_type_t;
	#define OMAP_MCBSP_IRQ_IO ((__force omap_mcbsp_io_type_t) 1)
	#define OMAP_MCBSP_POLL_IO ((__force omap_mcbsp_io_type_t) 2)

	typedef enum {
	OMAP_MCBSP_WORD_8 = 0,
	OMAP_MCBSP_WORD_12,
	OMAP_MCBSP_WORD_16,
	OMAP_MCBSP_WORD_20,
	OMAP_MCBSP_WORD_24,
	OMAP_MCBSP_WORD_32,
	} omap_mcbsp_word_length;

	typedef enum {
	OMAP_MCBSP_CLK_RISING = 0,
	OMAP_MCBSP_CLK_FALLING,
	} omap_mcbsp_clk_polarity;

	typedef enum {
	OMAP_MCBSP_FS_ACTIVE_HIGH = 0,
	OMAP_MCBSP_FS_ACTIVE_LOW,
	} omap_mcbsp_fs_polarity;

	typedef enum {
	OMAP_MCBSP_CLK_STP_MODE_NO_DELAY = 0,
	OMAP_MCBSP_CLK_STP_MODE_DELAY,
	} omap_mcbsp_clk_stp_mode;


	/***** SPI specific mode ********/
	typedef enum {
	OMAP_MCBSP_SPI_MASTER = 0,
	OMAP_MCBSP_SPI_SLAVE,
	} omap_mcbsp_spi_mode;

	struct omap_mcbsp_spi_cfg {
	omap_mcbsp_spi_mode spi_mode;
	omap_mcbsp_clk_polarity rx_clock_polarity;
	omap_mcbsp_clk_polarity tx_clock_polarity;
	omap_mcbsp_fs_polarity fsx_polarity;
	u8 clk_div;
	omap_mcbsp_clk_stp_mode clk_stp_mode;
	omap_mcbsp_word_length word_length;
	};

	/* Platform specific configuration */
	struct omap_mcbsp_ops {
	void (*request)(unsigned int);
	void (*free)(unsigned int);
	int (*check)(unsigned int);
	};

	struct omap_mcbsp_platform_data {
	u32 virt_base;
	u8 dma_rx_sync, dma_tx_sync;
	u16 rx_irq, tx_irq;
	struct omap_mcbsp_ops *ops;
	char const *clk_name;
	};

	struct omap_mcbsp {
	struct device *dev;
	u32 io_base;
	u8 id;
	u8 free;
	omap_mcbsp_word_length rx_word_length;
	omap_mcbsp_word_length tx_word_length;

	omap_mcbsp_io_type_t io_type; /* IRQ or poll */
	/* IRQ based TX/RX */
	int rx_irq;
	int tx_irq;

	/* DMA stuff */
	u8 dma_rx_sync;
	short dma_rx_lch;
	u8 dma_tx_sync;
	short dma_tx_lch;

	/* Completion queues */
	struct completion tx_irq_completion;
	struct completion rx_irq_completion;
	struct completion tx_dma_completion;
	struct completion rx_dma_completion;

	/* Protect the field .free, while checking if the mcbsp is in use */
	spinlock_t lock;
	struct omap_mcbsp_platform_data *pdata;
	struct clk *clk;
	};

	int omap_mcbsp_init(void);
	void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
	int size);
	void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config);
	int omap_mcbsp_request(unsigned int id);
	void omap_mcbsp_free(unsigned int id);
	void omap_mcbsp_start(unsigned int id);
	void omap_mcbsp_stop(unsigned int id);
	void omap_mcbsp_xmit_word(unsigned int id, u32 word);
	u32 omap_mcbsp_recv_word(unsigned int id);

	int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, unsigned int length);
	int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, unsigned int length);
	int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word);
	int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 * word);


	/* SPI specific API */
	void omap_mcbsp_set_spi_mode(unsigned int id, const struct omap_mcbsp_spi_cfg * spi_cfg);

	/* Polled read/write functions */
	int omap_mcbsp_pollread(unsigned int id, u16 * buf);
	int omap_mcbsp_pollwrite(unsigned int id, u16 buf);

	#endif