xref: /linux/sound/soc/meson/axg-fifo.h (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80)
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