mcbsp.h
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上传日期:2009-04-28
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- /*
- * linux/include/asm-arm/arch-omap/gpio.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 <asm/arch/hardware.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 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 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 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;
- };
- 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);
- /* 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