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Linux/sound/soc/txx9/txx9aclc.h

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  1 /* SPDX-License-Identifier: GPL-2.0-only */
  2 /*
  3  * TXx9 SoC AC Link Controller
  4  */
  5 
  6 #ifndef __TXX9ACLC_H
  7 #define __TXX9ACLC_H
  8 
  9 #include <linux/interrupt.h>
 10 #include <asm/txx9/dmac.h>
 11 
 12 #define ACCTLEN                 0x00    /* control enable */
 13 #define ACCTLDIS                0x04    /* control disable */
 14 #define   ACCTL_ENLINK          0x00000001      /* enable/disable AC-link */
 15 #define   ACCTL_AUDODMA         0x00000100      /* AUDODMA enable/disable */
 16 #define   ACCTL_AUDIDMA         0x00001000      /* AUDIDMA enable/disable */
 17 #define   ACCTL_AUDOEHLT        0x00010000      /* AUDO error halt
 18                                                    enable/disable */
 19 #define   ACCTL_AUDIEHLT        0x00100000      /* AUDI error halt
 20                                                    enable/disable */
 21 #define ACREGACC                0x08    /* codec register access */
 22 #define   ACREGACC_DAT_SHIFT    0       /* data field */
 23 #define   ACREGACC_REG_SHIFT    16      /* address field */
 24 #define   ACREGACC_CODECID_SHIFT        24      /* CODEC ID field */
 25 #define   ACREGACC_READ         0x80000000      /* CODEC read */
 26 #define   ACREGACC_WRITE        0x00000000      /* CODEC write */
 27 #define ACINTSTS                0x10    /* interrupt status */
 28 #define ACINTMSTS               0x14    /* interrupt masked status */
 29 #define ACINTEN                 0x18    /* interrupt enable */
 30 #define ACINTDIS                0x1c    /* interrupt disable */
 31 #define   ACINT_CODECRDY(n)     (0x00000001 << (n))     /* CODECn ready */
 32 #define   ACINT_REGACCRDY       0x00000010      /* ACREGACC ready */
 33 #define   ACINT_AUDOERR         0x00000100      /* AUDO underrun error */
 34 #define   ACINT_AUDIERR         0x00001000      /* AUDI overrun error */
 35 #define ACDMASTS                0x80    /* DMA request status */
 36 #define   ACDMA_AUDO            0x00000001      /* AUDODMA pending */
 37 #define   ACDMA_AUDI            0x00000010      /* AUDIDMA pending */
 38 #define ACAUDODAT               0xa0    /* audio out data */
 39 #define ACAUDIDAT               0xb0    /* audio in data */
 40 #define ACREVID                 0xfc    /* revision ID */
 41 
 42 struct txx9aclc_dmadata {
 43         struct resource *dma_res;
 44         struct txx9dmac_slave dma_slave;
 45         struct dma_chan *dma_chan;
 46         struct tasklet_struct tasklet;
 47         spinlock_t dma_lock;
 48         int stream; /* SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE */
 49         struct snd_pcm_substream *substream;
 50         unsigned long pos;
 51         dma_addr_t dma_addr;
 52         unsigned long buffer_bytes;
 53         unsigned long period_bytes;
 54         unsigned long frag_bytes;
 55         int frags;
 56         int frag_count;
 57         int dmacount;
 58 };
 59 
 60 struct txx9aclc_plat_drvdata {
 61         void __iomem *base;
 62         u64 physbase;
 63 };
 64 
 65 static inline struct txx9aclc_plat_drvdata *txx9aclc_get_plat_drvdata(
 66         struct snd_soc_dai *dai)
 67 {
 68         return dev_get_drvdata(dai->dev);
 69 }
 70 
 71 #endif /* __TXX9ACLC_H */
 72 

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