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_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ 25 SNDRV_PCM_FMTBIT_S16_LE | \ 26 SNDRV_PCM_FMTBIT_S20_LE | \ 27 SNDRV_PCM_FMTBIT_S24_LE | \ 28 SNDRV_PCM_FMTBIT_S32_LE | \ 29 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) 30 31 #define AXG_FIFO_BURST 8 32 33 #define FIFO_INT_ADDR_FINISH BIT(0) 34 #define FIFO_INT_ADDR_INT BIT(1) 35 #define FIFO_INT_COUNT_REPEAT BIT(2) 36 #define FIFO_INT_COUNT_ONCE BIT(3) 37 #define FIFO_INT_FIFO_ZERO BIT(4) 38 #define FIFO_INT_FIFO_DEPTH BIT(5) 39 #define FIFO_INT_MASK GENMASK(7, 0) 40 41 #define FIFO_CTRL0 0x00 42 #define CTRL0_DMA_EN BIT(31) 43 #define CTRL0_INT_EN GENMASK(23, 16) 44 #define CTRL0_SEL_MASK GENMASK(2, 0) 45 #define CTRL0_SEL_SHIFT 0 46 #define FIFO_CTRL1 0x04 47 #define CTRL1_INT_CLR GENMASK(7, 0) 48 #define CTRL1_STATUS2_SEL GENMASK(11, 8) 49 #define STATUS2_SEL_DDR_READ 0 50 #define CTRL1_FRDDR_DEPTH GENMASK(31, 24) 51 #define FIFO_START_ADDR 0x08 52 #define FIFO_FINISH_ADDR 0x0c 53 #define FIFO_INT_ADDR 0x10 54 #define FIFO_STATUS1 0x14 55 #define STATUS1_INT_STS GENMASK(7, 0) 56 #define FIFO_STATUS2 0x18 57 #define FIFO_INIT_ADDR 0x24 58 #define FIFO_CTRL2 0x28 59 60 struct axg_fifo { 61 struct regmap *map; 62 struct clk *pclk; 63 struct reset_control *arb; 64 struct regmap_field *field_threshold; 65 unsigned int depth; 66 int irq; 67 }; 68 69 struct axg_fifo_match_data { 70 const struct snd_soc_component_driver *component_drv; 71 struct snd_soc_dai_driver *dai_drv; 72 struct reg_field field_threshold; 73 }; 74 75 int axg_fifo_pcm_open(struct snd_soc_component *component, 76 struct snd_pcm_substream *ss); 77 int axg_fifo_pcm_close(struct snd_soc_component *component, 78 struct snd_pcm_substream *ss); 79 int axg_fifo_pcm_hw_params(struct snd_soc_component *component, 80 struct snd_pcm_substream *ss, 81 struct snd_pcm_hw_params *params); 82 int g12a_fifo_pcm_hw_params(struct snd_soc_component *component, 83 struct snd_pcm_substream *ss, 84 struct snd_pcm_hw_params *params); 85 int axg_fifo_pcm_hw_free(struct snd_soc_component *component, 86 struct snd_pcm_substream *ss); 87 snd_pcm_uframes_t axg_fifo_pcm_pointer(struct snd_soc_component *component, 88 struct snd_pcm_substream *ss); 89 int axg_fifo_pcm_trigger(struct snd_soc_component *component, 90 struct snd_pcm_substream *ss, int cmd); 91 92 int axg_fifo_pcm_new(struct snd_soc_pcm_runtime *rtd, unsigned int type); 93 int axg_fifo_probe(struct platform_device *pdev); 94 95 #endif /* _MESON_AXG_FIFO_H */ 96