sound/soc/imx/imx-ssi.h

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License version 2 as
   4  * published by the Free Software Foundation.
   5  */
   6
   7 #ifndef _IMX_SSI_H
   8 #define _IMX_SSI_H
   9
  10 #define SSI_STX0        0x00
  11 #define SSI_STX1        0x04
  12 #define SSI_SRX0        0x08
  13 #define SSI_SRX1        0x0c
  14
  15 #define SSI_SCR         0x10
  16 #define SSI_SCR_CLK_IST         (1 << 9)
  17 #define SSI_SCR_CLK_IST_SHIFT   9
  18 #define SSI_SCR_TCH_EN          (1 << 8)
  19 #define SSI_SCR_SYS_CLK_EN      (1 << 7)
  20 #define SSI_SCR_I2S_MODE_NORM   (0 << 5)
  21 #define SSI_SCR_I2S_MODE_MSTR   (1 << 5)
  22 #define SSI_SCR_I2S_MODE_SLAVE  (2 << 5)
  23 #define SSI_I2S_MODE_MASK       (3 << 5)
  24 #define SSI_SCR_SYN             (1 << 4)
  25 #define SSI_SCR_NET             (1 << 3)
  26 #define SSI_SCR_RE              (1 << 2)
  27 #define SSI_SCR_TE              (1 << 1)
  28 #define SSI_SCR_SSIEN           (1 << 0)
  29
  30 #define SSI_SISR        0x14
  31 #define SSI_SISR_MASK           ((1 << 19) - 1)
  32 #define SSI_SISR_CMDAU          (1 << 18)
  33 #define SSI_SISR_CMDDU          (1 << 17)
  34 #define SSI_SISR_RXT            (1 << 16)
  35 #define SSI_SISR_RDR1           (1 << 15)
  36 #define SSI_SISR_RDR0           (1 << 14)
  37 #define SSI_SISR_TDE1           (1 << 13)
  38 #define SSI_SISR_TDE0           (1 << 12)
  39 #define SSI_SISR_ROE1           (1 << 11)
  40 #define SSI_SISR_ROE0           (1 << 10)
  41 #define SSI_SISR_TUE1           (1 << 9)
  42 #define SSI_SISR_TUE0           (1 << 8)
  43 #define SSI_SISR_TFS            (1 << 7)
  44 #define SSI_SISR_RFS            (1 << 6)
  45 #define SSI_SISR_TLS            (1 << 5)
  46 #define SSI_SISR_RLS            (1 << 4)
  47 #define SSI_SISR_RFF1           (1 << 3)
  48 #define SSI_SISR_RFF0           (1 << 2)
  49 #define SSI_SISR_TFE1           (1 << 1)
  50 #define SSI_SISR_TFE0           (1 << 0)
  51
  52 #define SSI_SIER        0x18
  53 #define SSI_SIER_RDMAE          (1 << 22)
  54 #define SSI_SIER_RIE            (1 << 21)
  55 #define SSI_SIER_TDMAE          (1 << 20)
  56 #define SSI_SIER_TIE            (1 << 19)
  57 #define SSI_SIER_CMDAU_EN       (1 << 18)
  58 #define SSI_SIER_CMDDU_EN       (1 << 17)
  59 #define SSI_SIER_RXT_EN         (1 << 16)
  60 #define SSI_SIER_RDR1_EN        (1 << 15)
  61 #define SSI_SIER_RDR0_EN        (1 << 14)
  62 #define SSI_SIER_TDE1_EN        (1 << 13)
  63 #define SSI_SIER_TDE0_EN        (1 << 12)
  64 #define SSI_SIER_ROE1_EN        (1 << 11)
  65 #define SSI_SIER_ROE0_EN        (1 << 10)
  66 #define SSI_SIER_TUE1_EN        (1 << 9)
  67 #define SSI_SIER_TUE0_EN        (1 << 8)
  68 #define SSI_SIER_TFS_EN         (1 << 7)
  69 #define SSI_SIER_RFS_EN         (1 << 6)
  70 #define SSI_SIER_TLS_EN         (1 << 5)
  71 #define SSI_SIER_RLS_EN         (1 << 4)
  72 #define SSI_SIER_RFF1_EN        (1 << 3)
  73 #define SSI_SIER_RFF0_EN        (1 << 2)
  74 #define SSI_SIER_TFE1_EN        (1 << 1)
  75 #define SSI_SIER_TFE0_EN        (1 << 0)
  76
  77 #define SSI_STCR        0x1c
  78 #define SSI_STCR_TXBIT0         (1 << 9)
  79 #define SSI_STCR_TFEN1          (1 << 8)
  80 #define SSI_STCR_TFEN0          (1 << 7)
  81 #define SSI_FIFO_ENABLE_0_SHIFT 7
  82 #define SSI_STCR_TFDIR          (1 << 6)
  83 #define SSI_STCR_TXDIR          (1 << 5)
  84 #define SSI_STCR_TSHFD          (1 << 4)
  85 #define SSI_STCR_TSCKP          (1 << 3)
  86 #define SSI_STCR_TFSI           (1 << 2)
  87 #define SSI_STCR_TFSL           (1 << 1)
  88 #define SSI_STCR_TEFS           (1 << 0)
  89
  90 #define SSI_SRCR        0x20
  91 #define SSI_SRCR_RXBIT0         (1 << 9)
  92 #define SSI_SRCR_RFEN1          (1 << 8)
  93 #define SSI_SRCR_RFEN0          (1 << 7)
  94 #define SSI_FIFO_ENABLE_0_SHIFT 7
  95 #define SSI_SRCR_RFDIR          (1 << 6)
  96 #define SSI_SRCR_RXDIR          (1 << 5)
  97 #define SSI_SRCR_RSHFD          (1 << 4)
  98 #define SSI_SRCR_RSCKP          (1 << 3)
  99 #define SSI_SRCR_RFSI           (1 << 2)
 100 #define SSI_SRCR_RFSL           (1 << 1)
 101 #define SSI_SRCR_REFS           (1 << 0)
 102
 103 #define SSI_SRCCR               0x28
 104 #define SSI_SRCCR_DIV2          (1 << 18)
 105 #define SSI_SRCCR_PSR           (1 << 17)
 106 #define SSI_SRCCR_WL(x)         ((((x) - 2) >> 1) << 13)
 107 #define SSI_SRCCR_DC(x)         (((x) & 0x1f) << 8)
 108 #define SSI_SRCCR_PM(x)         (((x) & 0xff) << 0)
 109 #define SSI_SRCCR_WL_MASK       (0xf << 13)
 110 #define SSI_SRCCR_DC_MASK       (0x1f << 8)
 111 #define SSI_SRCCR_PM_MASK       (0xff << 0)
 112
 113 #define SSI_STCCR               0x24
 114 #define SSI_STCCR_DIV2          (1 << 18)
 115 #define SSI_STCCR_PSR           (1 << 17)
 116 #define SSI_STCCR_WL(x)         ((((x) - 2) >> 1) << 13)
 117 #define SSI_STCCR_DC(x)         (((x) & 0x1f) << 8)
 118 #define SSI_STCCR_PM(x)         (((x) & 0xff) << 0)
 119 #define SSI_STCCR_WL_MASK       (0xf << 13)
 120 #define SSI_STCCR_DC_MASK       (0x1f << 8)
 121 #define SSI_STCCR_PM_MASK       (0xff << 0)
 122
 123 #define SSI_SFCSR       0x2c
 124 #define SSI_SFCSR_RFCNT1(x)     (((x) & 0xf) << 28)
 125 #define SSI_RX_FIFO_1_COUNT_SHIFT 28
 126 #define SSI_SFCSR_TFCNT1(x)     (((x) & 0xf) << 24)
 127 #define SSI_TX_FIFO_1_COUNT_SHIFT 24
 128 #define SSI_SFCSR_RFWM1(x)      (((x) & 0xf) << 20)
 129 #define SSI_SFCSR_TFWM1(x)      (((x) & 0xf) << 16)
 130 #define SSI_SFCSR_RFCNT0(x)     (((x) & 0xf) << 12)
 131 #define SSI_RX_FIFO_0_COUNT_SHIFT 12
 132 #define SSI_SFCSR_TFCNT0(x)     (((x) & 0xf) <<  8)
 133 #define SSI_TX_FIFO_0_COUNT_SHIFT 8
 134 #define SSI_SFCSR_RFWM0(x)      (((x) & 0xf) <<  4)
 135 #define SSI_SFCSR_TFWM0(x)      (((x) & 0xf) <<  0)
 136 #define SSI_SFCSR_RFWM0_MASK    (0xf <<  4)
 137 #define SSI_SFCSR_TFWM0_MASK    (0xf <<  0)
 138
 139 #define SSI_STR         0x30
 140 #define SSI_STR_TEST            (1 << 15)
 141 #define SSI_STR_RCK2TCK         (1 << 14)
 142 #define SSI_STR_RFS2TFS         (1 << 13)
 143 #define SSI_STR_RXSTATE(x)      (((x) & 0xf) << 8)
 144 #define SSI_STR_TXD2RXD         (1 <<  7)
 145 #define SSI_STR_TCK2RCK         (1 <<  6)
 146 #define SSI_STR_TFS2RFS         (1 <<  5)
 147 #define SSI_STR_TXSTATE(x)      (((x) & 0xf) << 0)
 148
 149 #define SSI_SOR         0x34
 150 #define SSI_SOR_CLKOFF          (1 << 6)
 151 #define SSI_SOR_RX_CLR          (1 << 5)
 152 #define SSI_SOR_TX_CLR          (1 << 4)
 153 #define SSI_SOR_INIT            (1 << 3)
 154 #define SSI_SOR_WAIT(x)         (((x) & 0x3) << 1)
 155 #define SSI_SOR_WAIT_MASK       (0x3 << 1)
 156 #define SSI_SOR_SYNRST          (1 << 0)
 157
 158 #define SSI_SACNT       0x38
 159 #define SSI_SACNT_FRDIV(x)      (((x) & 0x3f) << 5)
 160 #define SSI_SACNT_WR            (1 << 4)
 161 #define SSI_SACNT_RD            (1 << 3)
 162 #define SSI_SACNT_TIF           (1 << 2)
 163 #define SSI_SACNT_FV            (1 << 1)
 164 #define SSI_SACNT_AC97EN        (1 << 0)
 165
 166 #define SSI_SACADD      0x3c
 167 #define SSI_SACDAT      0x40
 168 #define SSI_SATAG       0x44
 169 #define SSI_STMSK       0x48
 170 #define SSI_SRMSK       0x4c
 171 #define SSI_SACCST      0x50
 172 #define SSI_SACCEN      0x54
 173 #define SSI_SACCDIS     0x58
 174
 175 /* SSI clock sources */
 176 #define IMX_SSP_SYS_CLK         0
 177
 178 /* SSI audio dividers */
 179 #define IMX_SSI_TX_DIV_2        0
 180 #define IMX_SSI_TX_DIV_PSR      1
 181 #define IMX_SSI_TX_DIV_PM       2
 182 #define IMX_SSI_RX_DIV_2        3
 183 #define IMX_SSI_RX_DIV_PSR      4
 184 #define IMX_SSI_RX_DIV_PM       5
 185
 186 #define DRV_NAME "imx-ssi"
 187
 188 #include <linux/dmaengine.h>
 189 #include <mach/dma.h>
 190
 191 struct imx_pcm_dma_params {
 192         int dma;
 193         unsigned long dma_addr;
 194         int burstsize;
 195 };
 196
 197 struct imx_ssi {
 198         struct platform_device *ac97_dev;
 199
 200         struct snd_soc_dai *imx_ac97;
 201         struct clk *clk;
 202         void __iomem *base;
 203         int irq;
 204         int fiq_enable;
 205         unsigned int offset;
 206
 207         unsigned int flags;
 208
 209         void (*ac97_reset) (struct snd_ac97 *ac97);
 210         void (*ac97_warm_reset)(struct snd_ac97 *ac97);
 211
 212         struct imx_pcm_dma_params       dma_params_rx;
 213         struct imx_pcm_dma_params       dma_params_tx;
 214
 215         int enabled;
 216
 217         struct platform_device *soc_platform_pdev;
 218         struct platform_device *soc_platform_pdev_fiq;
 219 };
 220
 221 struct snd_soc_platform *imx_ssi_fiq_init(struct platform_device *pdev,
 222                 struct imx_ssi *ssi);
 223 void imx_ssi_fiq_exit(struct platform_device *pdev, struct imx_ssi *ssi);
 224 struct snd_soc_platform *imx_ssi_dma_mx2_init(struct platform_device *pdev,
 225                 struct imx_ssi *ssi);
 226
 227 int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma);
 228 int imx_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
 229         struct snd_pcm *pcm);
 230 void imx_pcm_free(struct snd_pcm *pcm);
 231
 232 /*
 233  * Do not change this as the FIQ handler depends on this size
 234  */
 235 #define IMX_SSI_DMABUF_SIZE     (64 * 1024)
 236
 237 #endif /* _IMX_SSI_H */