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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0
2 *
3 * CS35L41 ALSA HDA audio driver
4 *
5 * Copyright 2021 Cirrus Logic, Inc.
6 *
7 * Author: Lucas Tanure <tanureal@opensource.cirrus.com>
8 */
9
10#ifndef __CS35L41_HDA_H__
11#define __CS35L41_HDA_H__
12
13#include <linux/acpi.h>
14#include <linux/efi.h>
15#include <linux/regulator/consumer.h>
16#include <linux/gpio/consumer.h>
17#include <linux/device.h>
18#include <sound/cs35l41.h>
19#include <sound/cs-amp-lib.h>
20
21#include <linux/firmware/cirrus/cs_dsp.h>
22#include <linux/firmware/cirrus/wmfw.h>
23
24#define CS35L41_MAX_ACCEPTABLE_SPI_SPEED_HZ 1000000
25#define DEFAULT_AMP_GAIN_PCM 17 /* 17.5dB Gain */
26#define DEFAULT_AMP_GAIN_PDM 19 /* 19.5dB Gain */
27
28struct cs35l41_amp_cal_data {
29 u32 calTarget[2];
30 u32 calTime[2];
31 s8 calAmbient;
32 u8 calStatus;
33 u16 calR;
34} __packed;
35
36struct cs35l41_amp_efi_data {
37 u32 size;
38 u32 count;
39 struct cs35l41_amp_cal_data data[];
40} __packed;
41
42enum cs35l41_hda_spk_pos {
43 CS35L41_LEFT,
44 CS35L41_RIGHT,
45 CS35L41_CENTER,
46};
47
48enum cs35l41_hda_gpio_function {
49 CS35L41_NOT_USED,
50 CS35l41_VSPK_SWITCH,
51 CS35L41_INTERRUPT,
52 CS35l41_SYNC,
53};
54
55enum control_bus {
56 I2C,
57 SPI
58};
59
60struct cs35l41_hda {
61 struct device *dev;
62 struct regmap *regmap;
63 struct gpio_desc *reset_gpio;
64 struct gpio_desc *cs_gpio;
65 struct cs35l41_hw_cfg hw_cfg;
66 struct hda_codec *codec;
67
68 int irq;
69 int index;
70 int channel_index;
71 unsigned volatile long irq_errors;
72 const char *amp_name;
73 const char *acpi_subsystem_id;
74 int firmware_type;
75 int speaker_id;
76 struct mutex fw_mutex;
77 struct work_struct fw_load_work;
78
79 struct regmap_irq_chip_data *irq_data;
80 bool firmware_running;
81 bool request_fw_load;
82 bool fw_request_ongoing;
83 bool halo_initialized;
84 bool playback_started;
85 struct cs_dsp cs_dsp;
86 struct acpi_device *dacpi;
87 bool mute_override;
88 enum control_bus control_bus;
89 bool bypass_fw;
90 unsigned int tuning_gain;
91 struct cirrus_amp_cal_data cal_data;
92 bool cal_data_valid;
93
94};
95
96enum halo_state {
97 HALO_STATE_CODE_INIT_DOWNLOAD = 0,
98 HALO_STATE_CODE_START,
99 HALO_STATE_CODE_RUN
100};
101
102extern const struct dev_pm_ops cs35l41_hda_pm_ops;
103
104int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int irq,
105 struct regmap *regmap, enum control_bus control_bus);
106void cs35l41_hda_remove(struct device *dev);
107int cs35l41_get_speaker_id(struct device *dev, int amp_index, int num_amps, int fixed_gpio_id);
108int cs35l41_hda_parse_acpi(struct cs35l41_hda *cs35l41, struct device *physdev, int id);
109
110#endif /*__CS35L41_HDA_H__*/