323 lines
8.9 KiB
C
323 lines
8.9 KiB
C
/* 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);
|
|
int omap_mcbsp_st_start(struct omap_mcbsp *mcbsp);
|
|
int omap_mcbsp_st_stop(struct omap_mcbsp *mcbsp);
|
|
|
|
#endif /* __OMAP_MCBSP_PRIV_H__ */
|