sound/soc/omap/mcbsp.h

   1 /*
   2  * sound/soc/omap/mcbsp.h
   3  *
   4  * OMAP Multi-Channel Buffered Serial Port
   5  *
   6  * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
   7  *          Peter Ujfalusi <peter.ujfalusi@ti.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  */
  24 #ifndef __ASOC_MCBSP_H
  25 #define __ASOC_MCBSP_H
  26
  27 #ifdef CONFIG_ARCH_OMAP1
  28 #define mcbsp_omap1()   1
  29 #else
  30 #define mcbsp_omap1()   0
  31 #endif
  32
  33 #include <sound/dmaengine_pcm.h>
  34
  35 /* McBSP register numbers. Register address offset = num * reg_step */
  36 enum {
  37         /* Common registers */
  38         OMAP_MCBSP_REG_SPCR2 = 4,
  39         OMAP_MCBSP_REG_SPCR1,
  40         OMAP_MCBSP_REG_RCR2,
  41         OMAP_MCBSP_REG_RCR1,
  42         OMAP_MCBSP_REG_XCR2,
  43         OMAP_MCBSP_REG_XCR1,
  44         OMAP_MCBSP_REG_SRGR2,
  45         OMAP_MCBSP_REG_SRGR1,
  46         OMAP_MCBSP_REG_MCR2,
  47         OMAP_MCBSP_REG_MCR1,
  48         OMAP_MCBSP_REG_RCERA,
  49         OMAP_MCBSP_REG_RCERB,
  50         OMAP_MCBSP_REG_XCERA,
  51         OMAP_MCBSP_REG_XCERB,
  52         OMAP_MCBSP_REG_PCR0,
  53         OMAP_MCBSP_REG_RCERC,
  54         OMAP_MCBSP_REG_RCERD,
  55         OMAP_MCBSP_REG_XCERC,
  56         OMAP_MCBSP_REG_XCERD,
  57         OMAP_MCBSP_REG_RCERE,
  58         OMAP_MCBSP_REG_RCERF,
  59         OMAP_MCBSP_REG_XCERE,
  60         OMAP_MCBSP_REG_XCERF,
  61         OMAP_MCBSP_REG_RCERG,
  62         OMAP_MCBSP_REG_RCERH,
  63         OMAP_MCBSP_REG_XCERG,
  64         OMAP_MCBSP_REG_XCERH,
  65
  66         /* OMAP1-OMAP2420 registers */
  67         OMAP_MCBSP_REG_DRR2 = 0,
  68         OMAP_MCBSP_REG_DRR1,
  69         OMAP_MCBSP_REG_DXR2,
  70         OMAP_MCBSP_REG_DXR1,
  71
  72         /* OMAP2430 and onwards */
  73         OMAP_MCBSP_REG_DRR = 0,
  74         OMAP_MCBSP_REG_DXR = 2,
  75         OMAP_MCBSP_REG_SYSCON = 35,
  76         OMAP_MCBSP_REG_THRSH2,
  77         OMAP_MCBSP_REG_THRSH1,
  78         OMAP_MCBSP_REG_IRQST = 40,
  79         OMAP_MCBSP_REG_IRQEN,
  80         OMAP_MCBSP_REG_WAKEUPEN,
  81         OMAP_MCBSP_REG_XCCR,
  82         OMAP_MCBSP_REG_RCCR,
  83         OMAP_MCBSP_REG_XBUFFSTAT,
  84         OMAP_MCBSP_REG_RBUFFSTAT,
  85         OMAP_MCBSP_REG_SSELCR,
  86 };
  87
  88 /* OMAP3 sidetone control registers */
  89 #define OMAP_ST_REG_REV         0x00
  90 #define OMAP_ST_REG_SYSCONFIG   0x10
  91 #define OMAP_ST_REG_IRQSTATUS   0x18
  92 #define OMAP_ST_REG_IRQENABLE   0x1C
  93 #define OMAP_ST_REG_SGAINCR     0x24
  94 #define OMAP_ST_REG_SFIRCR      0x28
  95 #define OMAP_ST_REG_SSELCR      0x2C
  96
  97 /************************** McBSP SPCR1 bit definitions ***********************/
  98 #define RRST                    BIT(0)
  99 #define RRDY                    BIT(1)
 100 #define RFULL                   BIT(2)
 101 #define RSYNC_ERR               BIT(3)
 102 #define RINTM(value)            (((value) & 0x3) << 4)  /* bits 4:5 */
 103 #define ABIS                    BIT(6)
 104 #define DXENA                   BIT(7)
 105 #define CLKSTP(value)           (((value) & 0x3) << 11) /* bits 11:12 */
 106 #define RJUST(value)            (((value) & 0x3) << 13) /* bits 13:14 */
 107 #define ALB                     BIT(15)
 108 #define DLB                     BIT(15)
 109
 110 /************************** McBSP SPCR2 bit definitions ***********************/
 111 #define XRST                    BIT(0)
 112 #define XRDY                    BIT(1)
 113 #define XEMPTY                  BIT(2)
 114 #define XSYNC_ERR               BIT(3)
 115 #define XINTM(value)            (((value) & 0x3) << 4)  /* bits 4:5 */
 116 #define GRST                    BIT(6)
 117 #define FRST                    BIT(7)
 118 #define SOFT                    BIT(8)
 119 #define FREE                    BIT(9)
 120
 121 /************************** McBSP PCR bit definitions *************************/
 122 #define CLKRP                   BIT(0)
 123 #define CLKXP                   BIT(1)
 124 #define FSRP                    BIT(2)
 125 #define FSXP                    BIT(3)
 126 #define DR_STAT                 BIT(4)
 127 #define DX_STAT                 BIT(5)
 128 #define CLKS_STAT               BIT(6)
 129 #define SCLKME                  BIT(7)
 130 #define CLKRM                   BIT(8)
 131 #define CLKXM                   BIT(9)
 132 #define FSRM                    BIT(10)
 133 #define FSXM                    BIT(11)
 134 #define RIOEN                   BIT(12)
 135 #define XIOEN                   BIT(13)
 136 #define IDLE_EN                 BIT(14)
 137
 138 /************************** McBSP RCR1 bit definitions ************************/
 139 #define RWDLEN1(value)          (((value) & 0x7) << 5)  /* Bits 5:7 */
 140 #define RFRLEN1(value)          (((value) & 0x7f) << 8) /* Bits 8:14 */
 141
 142 /************************** McBSP XCR1 bit definitions ************************/
 143 #define XWDLEN1(value)          (((value) & 0x7) << 5)  /* Bits 5:7 */
 144 #define XFRLEN1(value)          (((value) & 0x7f) << 8) /* Bits 8:14 */
 145
 146 /*************************** McBSP RCR2 bit definitions ***********************/
 147 #define RDATDLY(value)          ((value) & 0x3)         /* Bits 0:1 */
 148 #define RFIG                    BIT(2)
 149 #define RCOMPAND(value)         (((value) & 0x3) << 3)  /* Bits 3:4 */
 150 #define RWDLEN2(value)          (((value) & 0x7) << 5)  /* Bits 5:7 */
 151 #define RFRLEN2(value)          (((value) & 0x7f) << 8) /* Bits 8:14 */
 152 #define RPHASE                  BIT(15)
 153
 154 /*************************** McBSP XCR2 bit definitions ***********************/
 155 #define XDATDLY(value)          ((value) & 0x3)         /* Bits 0:1 */
 156 #define XFIG                    BIT(2)
 157 #define XCOMPAND(value)         (((value) & 0x3) << 3)  /* Bits 3:4 */
 158 #define XWDLEN2(value)          (((value) & 0x7) << 5)  /* Bits 5:7 */
 159 #define XFRLEN2(value)          (((value) & 0x7f) << 8) /* Bits 8:14 */
 160 #define XPHASE                  BIT(15)
 161
 162 /************************* McBSP SRGR1 bit definitions ************************/
 163 #define CLKGDV(value)           ((value) & 0x7f)                /* Bits 0:7 */
 164 #define FWID(value)             (((value) & 0xff) << 8) /* Bits 8:15 */
 165
 166 /************************* McBSP SRGR2 bit definitions ************************/
 167 #define FPER(value)             ((value) & 0x0fff)      /* Bits 0:11 */
 168 #define FSGM                    BIT(12)
 169 #define CLKSM                   BIT(13)
 170 #define CLKSP                   BIT(14)
 171 #define GSYNC                   BIT(15)
 172
 173 /************************* McBSP MCR1 bit definitions *************************/
 174 #define RMCM                    BIT(0)
 175 #define RCBLK(value)            (((value) & 0x7) << 2)  /* Bits 2:4 */
 176 #define RPABLK(value)           (((value) & 0x3) << 5)  /* Bits 5:6 */
 177 #define RPBBLK(value)           (((value) & 0x3) << 7)  /* Bits 7:8 */
 178
 179 /************************* McBSP MCR2 bit definitions *************************/
 180 #define XMCM(value)             ((value) & 0x3)         /* Bits 0:1 */
 181 #define XCBLK(value)            (((value) & 0x7) << 2)  /* Bits 2:4 */
 182 #define XPABLK(value)           (((value) & 0x3) << 5)  /* Bits 5:6 */
 183 #define XPBBLK(value)           (((value) & 0x3) << 7)  /* Bits 7:8 */
 184
 185 /*********************** McBSP XCCR bit definitions *************************/
 186 #define XDISABLE                BIT(0)
 187 #define XDMAEN                  BIT(3)
 188 #define DILB                    BIT(5)
 189 #define XFULL_CYCLE             BIT(11)
 190 #define DXENDLY(value)          (((value) & 0x3) << 12) /* Bits 12:13 */
 191 #define PPCONNECT               BIT(14)
 192 #define EXTCLKGATE              BIT(15)
 193
 194 /********************** McBSP RCCR bit definitions *************************/
 195 #define RDISABLE                BIT(0)
 196 #define RDMAEN                  BIT(3)
 197 #define RFULL_CYCLE             BIT(11)
 198
 199 /********************** McBSP SYSCONFIG bit definitions ********************/
 200 #define SOFTRST                 BIT(1)
 201 #define ENAWAKEUP               BIT(2)
 202 #define SIDLEMODE(value)        (((value) & 0x3) << 3)
 203 #define CLOCKACTIVITY(value)    (((value) & 0x3) << 8)
 204
 205 /********************** McBSP SSELCR bit definitions ***********************/
 206 #define SIDETONEEN              BIT(10)
 207
 208 /********************** McBSP Sidetone SYSCONFIG bit definitions ***********/
 209 #define ST_AUTOIDLE             BIT(0)
 210
 211 /********************** McBSP Sidetone SGAINCR bit definitions *************/
 212 #define ST_CH0GAIN(value)       ((value) & 0xffff)      /* Bits 0:15 */
 213 #define ST_CH1GAIN(value)       (((value) & 0xffff) << 16) /* Bits 16:31 */
 214
 215 /********************** McBSP Sidetone SFIRCR bit definitions **************/
 216 #define ST_FIRCOEFF(value)      ((value) & 0xffff)      /* Bits 0:15 */
 217
 218 /********************** McBSP Sidetone SSELCR bit definitions **************/
 219 #define ST_SIDETONEEN           BIT(0)
 220 #define ST_COEFFWREN            BIT(1)
 221 #define ST_COEFFWRDONE          BIT(2)
 222
 223 /********************** McBSP DMA operating modes **************************/
 224 #define MCBSP_DMA_MODE_ELEMENT          0
 225 #define MCBSP_DMA_MODE_THRESHOLD        1
 226
 227 /********************** McBSP WAKEUPEN/IRQST/IRQEN bit definitions *********/
 228 #define RSYNCERREN              BIT(0)
 229 #define RFSREN                  BIT(1)
 230 #define REOFEN                  BIT(2)
 231 #define RRDYEN                  BIT(3)
 232 #define RUNDFLEN                BIT(4)
 233 #define ROVFLEN                 BIT(5)
 234 #define XSYNCERREN              BIT(7)
 235 #define XFSXEN                  BIT(8)
 236 #define XEOFEN                  BIT(9)
 237 #define XRDYEN                  BIT(10)
 238 #define XUNDFLEN                BIT(11)
 239 #define XOVFLEN                 BIT(12)
 240 #define XEMPTYEOFEN             BIT(14)
 241
 242 /* Clock signal muxing options */
 243 #define CLKR_SRC_CLKR           0 /* CLKR signal is from the CLKR pin */
 244 #define CLKR_SRC_CLKX           1 /* CLKR signal is from the CLKX pin */
 245 #define FSR_SRC_FSR             2 /* FSR signal is from the FSR pin */
 246 #define FSR_SRC_FSX             3 /* FSR signal is from the FSX pin */
 247
 248 /* McBSP functional clock sources */
 249 #define MCBSP_CLKS_PRCM_SRC     0
 250 #define MCBSP_CLKS_PAD_SRC      1
 251
 252 /* we don't do multichannel for now */
 253 struct omap_mcbsp_reg_cfg {
 254         u16 spcr2;
 255         u16 spcr1;
 256         u16 rcr2;
 257         u16 rcr1;
 258         u16 xcr2;
 259         u16 xcr1;
 260         u16 srgr2;
 261         u16 srgr1;
 262         u16 mcr2;
 263         u16 mcr1;
 264         u16 pcr0;
 265         u16 rcerc;
 266         u16 rcerd;
 267         u16 xcerc;
 268         u16 xcerd;
 269         u16 rcere;
 270         u16 rcerf;
 271         u16 xcere;
 272         u16 xcerf;
 273         u16 rcerg;
 274         u16 rcerh;
 275         u16 xcerg;
 276         u16 xcerh;
 277         u16 xccr;
 278         u16 rccr;
 279 };
 280
 281 struct omap_mcbsp_st_data {
 282         void __iomem *io_base_st;
 283         bool running;
 284         bool enabled;
 285         s16 taps[128];  /* Sidetone filter coefficients */
 286         int nr_taps;    /* Number of filter coefficients in use */
 287         s16 ch0gain;
 288         s16 ch1gain;
 289 };
 290
 291 struct omap_mcbsp {
 292         struct device *dev;
 293         struct clk *fclk;
 294         spinlock_t lock;
 295         unsigned long phys_base;
 296         unsigned long phys_dma_base;
 297         void __iomem *io_base;
 298         u8 id;
 299         /*
 300          * Flags indicating is the bus already activated and configured by
 301          * another substream
 302          */
 303         int active;
 304         int configured;
 305         u8 free;
 306
 307         int irq;
 308         int rx_irq;
 309         int tx_irq;
 310
 311         /* Protect the field .free, while checking if the mcbsp is in use */
 312         struct omap_mcbsp_platform_data *pdata;
 313         struct omap_mcbsp_st_data *st_data;
 314         struct omap_mcbsp_reg_cfg cfg_regs;
 315         struct snd_dmaengine_dai_dma_data dma_data[2];
 316         unsigned int dma_req[2];
 317         int dma_op_mode;
 318         u16 max_tx_thres;
 319         u16 max_rx_thres;
 320         void *reg_cache;
 321         int reg_cache_size;
 322
 323         unsigned int fmt;
 324         unsigned int in_freq;
 325         int clk_div;
 326         int wlen;
 327 };
 328
 329 void omap_mcbsp_config(struct omap_mcbsp *mcbsp,
 330                        const struct omap_mcbsp_reg_cfg *config);
 331 void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
 332 void omap_mcbsp_set_rx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
 333 u16 omap_mcbsp_get_tx_delay(struct omap_mcbsp *mcbsp);
 334 u16 omap_mcbsp_get_rx_delay(struct omap_mcbsp *mcbsp);
 335 int omap_mcbsp_get_dma_op_mode(struct omap_mcbsp *mcbsp);
 336 int omap_mcbsp_request(struct omap_mcbsp *mcbsp);
 337 void omap_mcbsp_free(struct omap_mcbsp *mcbsp);
 338 void omap_mcbsp_start(struct omap_mcbsp *mcbsp, int tx, int rx);
 339 void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx);
 340
 341 /* McBSP functional clock source changing function */
 342 int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id);
 343
 344 /* Sidetone specific API */
 345 int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain);
 346 int omap_st_get_chgain(struct omap_mcbsp *mcbsp, int channel, s16 *chgain);
 347 int omap_st_enable(struct omap_mcbsp *mcbsp);
 348 int omap_st_disable(struct omap_mcbsp *mcbsp);
 349 int omap_st_is_enabled(struct omap_mcbsp *mcbsp);
 350
 351 int omap_mcbsp_init(struct platform_device *pdev);
 352 void omap_mcbsp_sysfs_remove(struct omap_mcbsp *mcbsp);
 353
 354 #endif /* __ASOC_MCBSP_H */