sound/soc/meson/axg-fifo.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
   2 /*
   3  * Copyright (c) 2018 BayLibre, SAS.
   4  * Author: Jerome Brunet <jbrunet@baylibre.com>
   5  */
   6
   7 #ifndef _MESON_AXG_FIFO_H
   8 #define _MESON_AXG_FIFO_H
   9
  10 struct clk;
  11 struct platform_device;
  12 struct reg_field;
  13 struct regmap;
  14 struct regmap_field;
  15 struct reset_control;
  16
  17 struct snd_soc_component_driver;
  18 struct snd_soc_dai;
  19 struct snd_soc_dai_driver;
  20
  21 struct snd_soc_pcm_runtime;
  22
  23 #define AXG_FIFO_CH_MAX                 128
  24 #define AXG_FIFO_RATES                  (SNDRV_PCM_RATE_5512 |          \
  25                                          SNDRV_PCM_RATE_8000_192000)
  26 #define AXG_FIFO_FORMATS                (SNDRV_PCM_FMTBIT_S8 |          \
  27                                          SNDRV_PCM_FMTBIT_S16_LE |      \
  28                                          SNDRV_PCM_FMTBIT_S20_LE |      \
  29                                          SNDRV_PCM_FMTBIT_S24_LE |      \
  30                                          SNDRV_PCM_FMTBIT_S32_LE |      \
  31                                          SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
  32
  33 #define AXG_FIFO_BURST                  8
  34 #define AXG_FIFO_MIN_CNT                64
  35 #define AXG_FIFO_MIN_DEPTH              (AXG_FIFO_BURST * AXG_FIFO_MIN_CNT)
  36
  37 #define FIFO_INT_ADDR_FINISH            BIT(0)
  38 #define FIFO_INT_ADDR_INT               BIT(1)
  39 #define FIFO_INT_COUNT_REPEAT           BIT(2)
  40 #define FIFO_INT_COUNT_ONCE             BIT(3)
  41 #define FIFO_INT_FIFO_ZERO              BIT(4)
  42 #define FIFO_INT_FIFO_DEPTH             BIT(5)
  43 #define FIFO_INT_MASK                   GENMASK(7, 0)
  44
  45 #define FIFO_CTRL0                      0x00
  46 #define  CTRL0_DMA_EN                   BIT(31)
  47 #define  CTRL0_INT_EN(x)                ((x) << 16)
  48 #define  CTRL0_SEL_MASK                 GENMASK(2, 0)
  49 #define  CTRL0_SEL_SHIFT                0
  50 #define FIFO_CTRL1                      0x04
  51 #define  CTRL1_INT_CLR(x)               ((x) << 0)
  52 #define  CTRL1_STATUS2_SEL_MASK         GENMASK(11, 8)
  53 #define  CTRL1_STATUS2_SEL(x)           ((x) << 8)
  54 #define   STATUS2_SEL_DDR_READ          0
  55 #define  CTRL1_FRDDR_DEPTH_MASK         GENMASK(31, 24)
  56 #define  CTRL1_FRDDR_DEPTH(x)           ((x) << 24)
  57 #define FIFO_START_ADDR                 0x08
  58 #define FIFO_FINISH_ADDR                0x0c
  59 #define FIFO_INT_ADDR                   0x10
  60 #define FIFO_STATUS1                    0x14
  61 #define  STATUS1_INT_STS(x)             ((x) << 0)
  62 #define FIFO_STATUS2                    0x18
  63 #define FIFO_INIT_ADDR                  0x24
  64 #define FIFO_CTRL2                      0x28
  65
  66 struct axg_fifo {
  67         struct regmap *map;
  68         struct clk *pclk;
  69         struct reset_control *arb;
  70         struct regmap_field *field_threshold;
  71         int irq;
  72 };
  73
  74 struct axg_fifo_match_data {
  75         const struct snd_soc_component_driver *component_drv;
  76         struct snd_soc_dai_driver *dai_drv;
  77         struct reg_field field_threshold;
  78 };
  79
  80 int axg_fifo_pcm_open(struct snd_soc_component *component,
  81                       struct snd_pcm_substream *ss);
  82 int axg_fifo_pcm_close(struct snd_soc_component *component,
  83                        struct snd_pcm_substream *ss);
  84 int axg_fifo_pcm_hw_params(struct snd_soc_component *component,
  85                            struct snd_pcm_substream *ss,
  86                            struct snd_pcm_hw_params *params);
  87 int g12a_fifo_pcm_hw_params(struct snd_soc_component *component,
  88                             struct snd_pcm_substream *ss,
  89                             struct snd_pcm_hw_params *params);
  90 int axg_fifo_pcm_hw_free(struct snd_soc_component *component,
  91                          struct snd_pcm_substream *ss);
  92 snd_pcm_uframes_t axg_fifo_pcm_pointer(struct snd_soc_component *component,
  93                                        struct snd_pcm_substream *ss);
  94 int axg_fifo_pcm_trigger(struct snd_soc_component *component,
  95                          struct snd_pcm_substream *ss, int cmd);
  96
  97 int axg_fifo_pcm_new(struct snd_soc_pcm_runtime *rtd, unsigned int type);
  98 int axg_fifo_probe(struct platform_device *pdev);
  99
 100 #endif /* _MESON_AXG_FIFO_H */