/* * arch/arm/plat-omap/include/mach/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 #include /* macro for building platform_device for McBSP ports */ #define OMAP_MCBSP_PLATFORM_DEVICE(port_nr) \ static struct platform_device omap_mcbsp##port_nr = { \ .name = "omap-mcbsp-dai", \ .id = port_nr - 1, \ } #define MCBSP_CONFIG_TYPE2 0x2 #define MCBSP_CONFIG_TYPE3 0x3 #define MCBSP_CONFIG_TYPE4 0x4 /* McBSP register numbers. Register address offset = num * reg_step */ enum { /* Common registers */ OMAP_MCBSP_REG_SPCR2 = 4, OMAP_MCBSP_REG_SPCR1, OMAP_MCBSP_REG_RCR2, OMAP_MCBSP_REG_RCR1, OMAP_MCBSP_REG_XCR2, OMAP_MCBSP_REG_XCR1, OMAP_MCBSP_REG_SRGR2, OMAP_MCBSP_REG_SRGR1, OMAP_MCBSP_REG_MCR2, OMAP_MCBSP_REG_MCR1, OMAP_MCBSP_REG_RCERA, OMAP_MCBSP_REG_RCERB, OMAP_MCBSP_REG_XCERA, OMAP_MCBSP_REG_XCERB, OMAP_MCBSP_REG_PCR0, OMAP_MCBSP_REG_RCERC, OMAP_MCBSP_REG_RCERD, OMAP_MCBSP_REG_XCERC, OMAP_MCBSP_REG_XCERD, OMAP_MCBSP_REG_RCERE, OMAP_MCBSP_REG_RCERF, OMAP_MCBSP_REG_XCERE, OMAP_MCBSP_REG_XCERF, OMAP_MCBSP_REG_RCERG, OMAP_MCBSP_REG_RCERH, OMAP_MCBSP_REG_XCERG, OMAP_MCBSP_REG_XCERH, /* OMAP1-OMAP2420 registers */ OMAP_MCBSP_REG_DRR2 = 0, OMAP_MCBSP_REG_DRR1, OMAP_MCBSP_REG_DXR2, OMAP_MCBSP_REG_DXR1, /* OMAP2430 and onwards */ OMAP_MCBSP_REG_DRR = 0, OMAP_MCBSP_REG_DXR = 2, OMAP_MCBSP_REG_SYSCON = 35, OMAP_MCBSP_REG_THRSH2, OMAP_MCBSP_REG_THRSH1, OMAP_MCBSP_REG_IRQST = 40, OMAP_MCBSP_REG_IRQEN, OMAP_MCBSP_REG_WAKEUPEN, OMAP_MCBSP_REG_XCCR, OMAP_MCBSP_REG_RCCR, OMAP_MCBSP_REG_XBUFFSTAT, OMAP_MCBSP_REG_RBUFFSTAT, OMAP_MCBSP_REG_SSELCR, }; /* OMAP3 sidetone control registers */ #define OMAP_ST_REG_REV 0x00 #define OMAP_ST_REG_SYSCONFIG 0x10 #define OMAP_ST_REG_IRQSTATUS 0x18 #define OMAP_ST_REG_IRQENABLE 0x1C #define OMAP_ST_REG_SGAINCR 0x24 #define OMAP_ST_REG_SFIRCR 0x28 #define OMAP_ST_REG_SSELCR 0x2C /************************** 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 ALB 0x8000 #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 */ /*********************** McBSP XCCR bit definitions *************************/ #define EXTCLKGATE 0x8000 #define PPCONNECT 0x4000 #define DXENDLY(value) ((value)<<12) /* Bits 12:13 */ #define XFULL_CYCLE 0x0800 #define DILB 0x0020 #define XDMAEN 0x0008 #define XDISABLE 0x0001 /********************** McBSP RCCR bit definitions *************************/ #define RFULL_CYCLE 0x0800 #define RDMAEN 0x0008 #define RDISABLE 0x0001 /********************** McBSP SYSCONFIG bit definitions ********************/ #define CLOCKACTIVITY(value) ((value)<<8) #define SIDLEMODE(value) ((value)<<3) #define ENAWAKEUP 0x0004 #define SOFTRST 0x0002 /********************** McBSP SSELCR bit definitions ***********************/ #define SIDETONEEN 0x0400 /********************** McBSP Sidetone SYSCONFIG bit definitions ***********/ #define ST_AUTOIDLE 0x0001 /********************** McBSP Sidetone SGAINCR bit definitions *************/ #define ST_CH1GAIN(value) ((value<<16)) /* Bits 16:31 */ #define ST_CH0GAIN(value) (value) /* Bits 0:15 */ /********************** McBSP Sidetone SFIRCR bit definitions **************/ #define ST_FIRCOEFF(value) (value) /* Bits 0:15 */ /********************** McBSP Sidetone SSELCR bit definitions **************/ #define ST_COEFFWRDONE 0x0004 #define ST_COEFFWREN 0x0002 #define ST_SIDETONEEN 0x0001 /********************** McBSP DMA operating modes **************************/ #define MCBSP_DMA_MODE_ELEMENT 0 #define MCBSP_DMA_MODE_THRESHOLD 1 #define MCBSP_DMA_MODE_FRAME 2 /********************** McBSP WAKEUPEN bit definitions *********************/ #define XEMPTYEOFEN 0x4000 #define XRDYEN 0x0400 #define XEOFEN 0x0200 #define XFSXEN 0x0100 #define XSYNCERREN 0x0080 #define RRDYEN 0x0008 #define REOFEN 0x0004 #define RFSREN 0x0002 #define RSYNCERREN 0x0001 /* CLKR signal muxing options */ #define CLKR_SRC_CLKR 0 #define CLKR_SRC_CLKX 1 /* FSR signal muxing options */ #define FSR_SRC_FSR 0 #define FSR_SRC_FSX 1 /* McBSP functional clock sources */ #define MCBSP_CLKS_PRCM_SRC 0 #define MCBSP_CLKS_PAD_SRC 1 /* 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; u16 xccr; u16 rccr; }; 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; /* Platform specific configuration */ struct omap_mcbsp_ops { void (*request)(unsigned int); void (*free)(unsigned int); }; struct omap_mcbsp_platform_data { struct omap_mcbsp_ops *ops; u16 buffer_size; u8 reg_size; u8 reg_step; /* McBSP platform and instance specific features */ bool has_wakeup; /* Wakeup capability */ bool has_ccr; /* Transceiver has configuration control registers */ int (*enable_st_clock)(unsigned int, bool); int (*set_clk_src)(struct device *dev, struct clk *clk, const char *src); int (*mux_signal)(struct device *dev, const char *signal, const char *src); }; struct omap_mcbsp_st_data { void __iomem *io_base_st; bool running; bool enabled; s16 taps[128]; /* Sidetone filter coefficients */ int nr_taps; /* Number of filter coefficients in use */ s16 ch0gain; s16 ch1gain; }; struct omap_mcbsp { struct device *dev; unsigned long phys_base; unsigned long phys_dma_base; void __iomem *io_base; u8 id; u8 free; int rx_irq; int tx_irq; /* DMA stuff */ u8 dma_rx_sync; u8 dma_tx_sync; /* Protect the field .free, while checking if the mcbsp is in use */ spinlock_t lock; struct omap_mcbsp_platform_data *pdata; struct clk *fclk; struct omap_mcbsp_st_data *st_data; int dma_op_mode; u16 max_tx_thres; u16 max_rx_thres; void *reg_cache; int reg_cache_size; }; /** * omap_mcbsp_dev_attr - OMAP McBSP device attributes for omap_hwmod * @sidetone: name of the sidetone device */ struct omap_mcbsp_dev_attr { const char *sidetone; }; extern struct omap_mcbsp **mcbsp_ptr; extern int omap_mcbsp_count; int omap_mcbsp_init(void); void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config); void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold); void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold); u16 omap_mcbsp_get_max_tx_threshold(unsigned int id); u16 omap_mcbsp_get_max_rx_threshold(unsigned int id); u16 omap_mcbsp_get_fifo_size(unsigned int id); u16 omap_mcbsp_get_tx_delay(unsigned int id); u16 omap_mcbsp_get_rx_delay(unsigned int id); int omap_mcbsp_get_dma_op_mode(unsigned int id); int omap_mcbsp_request(unsigned int id); void omap_mcbsp_free(unsigned int id); void omap_mcbsp_start(unsigned int id, int tx, int rx); void omap_mcbsp_stop(unsigned int id, int tx, int rx); /* McBSP functional clock source changing function */ extern int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id); /* McBSP signal muxing API */ void omap2_mcbsp1_mux_clkr_src(u8 mux); void omap2_mcbsp1_mux_fsr_src(u8 mux); int omap_mcbsp_dma_ch_params(unsigned int id, unsigned int stream); int omap_mcbsp_dma_reg_params(unsigned int id, unsigned int stream); /* Sidetone specific API */ int omap_st_set_chgain(unsigned int id, int channel, s16 chgain); int omap_st_get_chgain(unsigned int id, int channel, s16 *chgain); int omap_st_enable(unsigned int id); int omap_st_disable(unsigned int id); int omap_st_is_enabled(unsigned int id); #endif