/* * sound/soc/omap/mcbsp.h * * OMAP Multi-Channel Buffered Serial Port * * Contact: Jarkko Nikula * Peter Ujfalusi * * 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 __ASOC_MCBSP_H #define __ASOC_MCBSP_H #include "omap-pcm.h" /* 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 BIT(0) #define RRDY BIT(1) #define RFULL BIT(2) #define RSYNC_ERR BIT(3) #define RINTM(value) (((value) & 0x3) << 4) /* bits 4:5 */ #define ABIS BIT(6) #define DXENA BIT(7) #define CLKSTP(value) (((value) & 0x3) << 11) /* bits 11:12 */ #define RJUST(value) (((value) & 0x3) << 13) /* bits 13:14 */ #define ALB BIT(15) #define DLB BIT(15) /************************** McBSP SPCR2 bit definitions ***********************/ #define XRST BIT(0) #define XRDY BIT(1) #define XEMPTY BIT(2) #define XSYNC_ERR BIT(3) #define XINTM(value) (((value) & 0x3) << 4) /* bits 4:5 */ #define GRST BIT(6) #define FRST BIT(7) #define SOFT BIT(8) #define FREE BIT(9) /************************** McBSP PCR bit definitions *************************/ #define CLKRP BIT(0) #define CLKXP BIT(1) #define FSRP BIT(2) #define FSXP BIT(3) #define DR_STAT BIT(4) #define DX_STAT BIT(5) #define CLKS_STAT BIT(6) #define SCLKME BIT(7) #define CLKRM BIT(8) #define CLKXM BIT(9) #define FSRM BIT(10) #define FSXM BIT(11) #define RIOEN BIT(12) #define XIOEN BIT(13) #define IDLE_EN BIT(14) /************************** McBSP RCR1 bit definitions ************************/ #define RWDLEN1(value) (((value) & 0x7) << 5) /* Bits 5:7 */ #define RFRLEN1(value) (((value) & 0x7f) << 8) /* Bits 8:14 */ /************************** McBSP XCR1 bit definitions ************************/ #define XWDLEN1(value) (((value) & 0x7) << 5) /* Bits 5:7 */ #define XFRLEN1(value) (((value) & 0x7f) << 8) /* Bits 8:14 */ /*************************** McBSP RCR2 bit definitions ***********************/ #define RDATDLY(value) ((value) & 0x3) /* Bits 0:1 */ #define RFIG BIT(2) #define RCOMPAND(value) (((value) & 0x3) << 3) /* Bits 3:4 */ #define RWDLEN2(value) (((value) & 0x7) << 5) /* Bits 5:7 */ #define RFRLEN2(value) (((value) & 0x7f) << 8) /* Bits 8:14 */ #define RPHASE BIT(15) /*************************** McBSP XCR2 bit definitions ***********************/ #define XDATDLY(value) ((value) & 0x3) /* Bits 0:1 */ #define XFIG BIT(2) #define XCOMPAND(value) (((value) & 0x3) << 3) /* Bits 3:4 */ #define XWDLEN2(value) (((value) & 0x7) << 5) /* Bits 5:7 */ #define XFRLEN2(value) (((value) & 0x7f) << 8) /* Bits 8:14 */ #define XPHASE BIT(15) /************************* McBSP SRGR1 bit definitions ************************/ #define CLKGDV(value) ((value) & 0x7f) /* Bits 0:7 */ #define FWID(value) (((value) & 0xff) << 8) /* Bits 8:15 */ /************************* McBSP SRGR2 bit definitions ************************/ #define FPER(value) ((value) & 0x0fff) /* Bits 0:11 */ #define FSGM BIT(12) #define CLKSM BIT(13) #define CLKSP BIT(14) #define GSYNC BIT(15) /************************* McBSP MCR1 bit definitions *************************/ #define RMCM BIT(0) #define RCBLK(value) (((value) & 0x7) << 2) /* Bits 2:4 */ #define RPABLK(value) (((value) & 0x3) << 5) /* Bits 5:6 */ #define RPBBLK(value) (((value) & 0x3) << 7) /* Bits 7:8 */ /************************* McBSP MCR2 bit definitions *************************/ #define XMCM(value) ((value) & 0x3) /* Bits 0:1 */ #define XCBLK(value) (((value) & 0x7) << 2) /* Bits 2:4 */ #define XPABLK(value) (((value) & 0x3) << 5) /* Bits 5:6 */ #define XPBBLK(value) (((value) & 0x3) << 7) /* Bits 7:8 */ /*********************** McBSP XCCR bit definitions *************************/ #define XDISABLE BIT(0) #define XDMAEN BIT(3) #define DILB BIT(5) #define XFULL_CYCLE BIT(11) #define DXENDLY(value) (((value) & 0x3) << 12) /* Bits 12:13 */ #define PPCONNECT BIT(14) #define EXTCLKGATE BIT(15) /********************** McBSP RCCR bit definitions *************************/ #define RDISABLE BIT(0) #define RDMAEN BIT(3) #define RFULL_CYCLE BIT(11) /********************** McBSP SYSCONFIG bit definitions ********************/ #define SOFTRST BIT(1) #define ENAWAKEUP BIT(2) #define SIDLEMODE(value) (((value) & 0x3) << 3) #define CLOCKACTIVITY(value) (((value) & 0x3) << 8) /********************** McBSP SSELCR bit definitions ***********************/ #define SIDETONEEN BIT(10) /********************** McBSP Sidetone SYSCONFIG bit definitions ***********/ #define ST_AUTOIDLE BIT(0) /********************** McBSP Sidetone SGAINCR bit definitions *************/ #define ST_CH0GAIN(value) ((value) & 0xffff) /* Bits 0:15 */ #define ST_CH1GAIN(value) (((value) & 0xffff) << 16) /* Bits 16:31 */ /********************** McBSP Sidetone SFIRCR bit definitions **************/ #define ST_FIRCOEFF(value) ((value) & 0xffff) /* Bits 0:15 */ /********************** McBSP Sidetone SSELCR bit definitions **************/ #define ST_SIDETONEEN BIT(0) #define ST_COEFFWREN BIT(1) #define ST_COEFFWRDONE BIT(2) /********************** 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 RSYNCERREN BIT(0) #define RFSREN BIT(1) #define REOFEN BIT(2) #define RRDYEN BIT(3) #define XSYNCERREN BIT(7) #define XFSXEN BIT(8) #define XEOFEN BIT(9) #define XRDYEN BIT(10) #define XEMPTYEOFEN BIT(14) /* 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; }; 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; struct clk *fclk; spinlock_t lock; unsigned long phys_base; unsigned long phys_dma_base; void __iomem *io_base; u8 id; /* * Flags indicating is the bus already activated and configured by * another substream */ int active; int configured; u8 free; int rx_irq; int tx_irq; /* Protect the field .free, while checking if the mcbsp is in use */ struct omap_mcbsp_platform_data *pdata; struct omap_mcbsp_st_data *st_data; struct omap_mcbsp_reg_cfg cfg_regs; struct omap_pcm_dma_data dma_data[2]; int dma_op_mode; u16 max_tx_thres; u16 max_rx_thres; void *reg_cache; int reg_cache_size; unsigned int fmt; unsigned int in_freq; int clk_div; int wlen; }; void omap_mcbsp_config(struct omap_mcbsp *mcbsp, const struct omap_mcbsp_reg_cfg *config); void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold); void omap_mcbsp_set_rx_threshold(struct omap_mcbsp *mcbsp, u16 threshold); u16 omap_mcbsp_get_tx_delay(struct omap_mcbsp *mcbsp); u16 omap_mcbsp_get_rx_delay(struct omap_mcbsp *mcbsp); int omap_mcbsp_get_dma_op_mode(struct omap_mcbsp *mcbsp); int omap_mcbsp_request(struct omap_mcbsp *mcbsp); void omap_mcbsp_free(struct omap_mcbsp *mcbsp); void omap_mcbsp_start(struct omap_mcbsp *mcbsp, int tx, int rx); void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx); /* McBSP functional clock source changing function */ int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id); /* McBSP signal muxing API */ void omap2_mcbsp1_mux_clkr_src(struct omap_mcbsp *mcbsp, u8 mux); void omap2_mcbsp1_mux_fsr_src(struct omap_mcbsp *mcbsp, u8 mux); /* Sidetone specific API */ int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain); int omap_st_get_chgain(struct omap_mcbsp *mcbsp, int channel, s16 *chgain); int omap_st_enable(struct omap_mcbsp *mcbsp); int omap_st_disable(struct omap_mcbsp *mcbsp); int omap_st_is_enabled(struct omap_mcbsp *mcbsp); int __devinit omap_mcbsp_init(struct platform_device *pdev); void __devexit omap_mcbsp_sysfs_remove(struct omap_mcbsp *mcbsp); #endif /* __ASOC_MCBSP_H */