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/* 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__ */
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