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Diffstat (limited to 'sound/soc/ti/omap-mcbsp-priv.h')
| -rw-r--r-- | sound/soc/ti/omap-mcbsp-priv.h | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/sound/soc/ti/omap-mcbsp-priv.h b/sound/soc/ti/omap-mcbsp-priv.h new file mode 100644 index 000000000..7865cda4b --- /dev/null +++ b/sound/soc/ti/omap-mcbsp-priv.h @@ -0,0 +1,324 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * OMAP Multi-Channel Buffered Serial Port + * + * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com> + * Peter Ujfalusi <peter.ujfalusi@ti.com> + */ + +#ifndef __OMAP_MCBSP_PRIV_H__ +#define __OMAP_MCBSP_PRIV_H__ + +#include <linux/platform_data/asoc-ti-mcbsp.h> + +#ifdef CONFIG_ARCH_OMAP1 +#define mcbsp_omap1() 1 +#else +#define mcbsp_omap1() 0 +#endif + +/* 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, +}; + +/************************** 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 DMA operating modes **************************/ +#define MCBSP_DMA_MODE_ELEMENT 0 +#define MCBSP_DMA_MODE_THRESHOLD 1 + +/********************** McBSP WAKEUPEN/IRQST/IRQEN bit definitions *********/ +#define RSYNCERREN BIT(0) +#define RFSREN BIT(1) +#define REOFEN BIT(2) +#define RRDYEN BIT(3) +#define RUNDFLEN BIT(4) +#define ROVFLEN BIT(5) +#define XSYNCERREN BIT(7) +#define XFSXEN BIT(8) +#define XEOFEN BIT(9) +#define XRDYEN BIT(10) +#define XUNDFLEN BIT(11) +#define XOVFLEN BIT(12) +#define XEMPTYEOFEN BIT(14) + +/* Clock signal muxing options */ +#define CLKR_SRC_CLKR 0 /* CLKR signal is from the CLKR pin */ +#define CLKR_SRC_CLKX 1 /* CLKR signal is from the CLKX pin */ +#define FSR_SRC_FSR 2 /* FSR signal is from the FSR pin */ +#define FSR_SRC_FSX 3 /* FSR signal is from the FSX pin */ + +/* 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; + +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 irq; + 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 snd_dmaengine_dai_dma_data dma_data[2]; + unsigned int dma_req[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; + unsigned int latency[2]; + int clk_div; + int wlen; + + struct pm_qos_request pm_qos_req; +}; + +static inline void omap_mcbsp_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val) +{ + void __iomem *addr = mcbsp->io_base + reg * mcbsp->pdata->reg_step; + + if (mcbsp->pdata->reg_size == 2) { + ((u16 *)mcbsp->reg_cache)[reg] = (u16)val; + writew_relaxed((u16)val, addr); + } else { + ((u32 *)mcbsp->reg_cache)[reg] = val; + writel_relaxed(val, addr); + } +} + +static inline int omap_mcbsp_read(struct omap_mcbsp *mcbsp, u16 reg, + bool from_cache) +{ + void __iomem *addr = mcbsp->io_base + reg * mcbsp->pdata->reg_step; + + if (mcbsp->pdata->reg_size == 2) { + return !from_cache ? readw_relaxed(addr) : + ((u16 *)mcbsp->reg_cache)[reg]; + } else { + return !from_cache ? readl_relaxed(addr) : + ((u32 *)mcbsp->reg_cache)[reg]; + } +} + +#define MCBSP_READ(mcbsp, reg) \ + omap_mcbsp_read(mcbsp, OMAP_MCBSP_REG_##reg, 0) +#define MCBSP_WRITE(mcbsp, reg, val) \ + omap_mcbsp_write(mcbsp, OMAP_MCBSP_REG_##reg, val) +#define MCBSP_READ_CACHE(mcbsp, reg) \ + omap_mcbsp_read(mcbsp, OMAP_MCBSP_REG_##reg, 1) + + +/* Sidetone specific API */ +int omap_mcbsp_st_init(struct platform_device *pdev); +void omap_mcbsp_st_cleanup(struct platform_device *pdev); + +int omap_mcbsp_st_start(struct omap_mcbsp *mcbsp); +int omap_mcbsp_st_stop(struct omap_mcbsp *mcbsp); + +#endif /* __OMAP_MCBSP_PRIV_H__ */ |