1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * cs42l42.h -- CS42L42 ALSA SoC audio driver header
4 *
5 * Copyright 2016-2022 Cirrus Logic, Inc.
6 *
7 * Author: James Schulman <james.schulman@cirrus.com>
8 * Author: Brian Austin <brian.austin@cirrus.com>
9 * Author: Michael White <michael.white@cirrus.com>
10 */
11
12 #ifndef __CS42L42_H__
13 #define __CS42L42_H__
14
15 #include <dt-bindings/sound/cs42l42.h>
16 #include <linux/device.h>
17 #include <linux/gpio/consumer.h>
18 #include <linux/mutex.h>
19 #include <linux/regmap.h>
20 #include <linux/regulator/consumer.h>
21 #include <linux/soundwire/sdw.h>
22 #include <sound/jack.h>
23 #include <sound/cs42l42.h>
24 #include <sound/soc-component.h>
25 #include <sound/soc-dai.h>
26
27 struct cs42l42_private {
28 struct regmap *regmap;
29 struct device *dev;
30 struct regulator_bulk_data supplies[CS42L42_NUM_SUPPLIES];
31 struct gpio_desc *reset_gpio;
32 struct completion pdn_done;
33 struct snd_soc_jack *jack;
34 struct sdw_slave *sdw_peripheral;
35 struct mutex irq_lock;
36 int devid;
37 int irq;
38 int pll_config;
39 u32 sclk;
40 u32 sample_rate;
41 u32 bclk_ratio;
42 u8 plug_state;
43 u8 hs_type;
44 u8 ts_inv;
45 u8 ts_dbnc_rise;
46 u8 ts_dbnc_fall;
47 u8 btn_det_init_dbnce;
48 u8 btn_det_event_dbnce;
49 u8 bias_thresholds[CS42L42_NUM_BIASES];
50 u8 hs_bias_ramp_rate;
51 u8 hs_bias_ramp_time;
52 u8 hs_bias_sense_en;
53 u8 stream_use;
54 bool hp_adc_up_pending;
55 bool suspended;
56 bool sdw_waiting_first_unattach;
57 bool init_done;
58 };
59
60 extern const struct regmap_range_cfg cs42l42_page_range;
61 extern const struct regmap_config cs42l42_regmap;
62 extern const struct snd_soc_component_driver cs42l42_soc_component;
63 extern struct snd_soc_dai_driver cs42l42_dai;
64
65 bool cs42l42_readable_register(struct device *dev, unsigned int reg);
66 bool cs42l42_volatile_register(struct device *dev, unsigned int reg);
67
68 int cs42l42_pll_config(struct snd_soc_component *component,
69 unsigned int clk, unsigned int sample_rate);
70 void cs42l42_src_config(struct snd_soc_component *component, unsigned int sample_rate);
71 int cs42l42_mute_stream(struct snd_soc_dai *dai, int mute, int stream);
72 irqreturn_t cs42l42_irq_thread(int irq, void *data);
73 int cs42l42_suspend(struct device *dev);
74 int cs42l42_resume(struct device *dev);
75 void cs42l42_resume_restore(struct device *dev);
76 int cs42l42_common_probe(struct cs42l42_private *cs42l42,
77 const struct snd_soc_component_driver *component_drv,
78 struct snd_soc_dai_driver *dai);
79 int cs42l42_init(struct cs42l42_private *cs42l42);
80 void cs42l42_common_remove(struct cs42l42_private *cs42l42);
81
82 #endif /* __CS42L42_H__ */
83
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