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Diffstat (limited to 'include/asm-arm/arch-omap/mcbsp.h')
| -rw-r--r-- | include/asm-arm/arch-omap/mcbsp.h | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/mcbsp.h b/include/asm-arm/arch-omap/mcbsp.h new file mode 100644 index 00000000000..305bdeb16ab --- /dev/null +++ b/include/asm-arm/arch-omap/mcbsp.h @@ -0,0 +1,257 @@ +/* + * 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 |