1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * CS42L43 CODEC driver internal data
4 *
5 * Copyright (C) 2022-2023 Cirrus Logic, Inc. and
6 * Cirrus Logic International Semiconductor Ltd.
7 */
8
9 #include <linux/clk.h>
10 #include <linux/completion.h>
11 #include <linux/device.h>
12 #include <linux/mutex.h>
13 #include <linux/regmap.h>
14 #include <linux/soundwire/sdw.h>
15 #include <linux/types.h>
16 #include <sound/cs42l43.h>
17 #include <sound/pcm.h>
18 #include <sound/soc-jack.h>
19
20 #ifndef CS42L43_ASOC_INT_H
21 #define CS42L43_ASOC_INT_H
22
23 #define CS42L43_INTERNAL_SYSCLK 24576000
24 #define CS42L43_DEFAULT_SLOTS 0x3F
25
26 #define CS42L43_PLL_TIMEOUT_MS 200
27 #define CS42L43_SPK_TIMEOUT_MS 100
28 #define CS42L43_HP_TIMEOUT_MS 2000
29 #define CS42L43_LOAD_TIMEOUT_MS 1000
30
31 #define CS42L43_HP_ILIMIT_BACKOFF_MS 1000
32 #define CS42L43_HP_ILIMIT_DECAY_MS 300
33 #define CS42L43_HP_ILIMIT_MAX_COUNT 4
34
35 #define CS42L43_ASP_MAX_CHANNELS 6
36 #define CS42L43_N_EQ_COEFFS 15
37
38 #define CS42L43_N_BUTTONS 6
39
40 struct cs42l43_codec {
41 struct device *dev;
42 struct cs42l43 *core;
43 struct snd_soc_component *component;
44
45 struct clk *mclk;
46
47 int n_slots;
48 int slot_width;
49 int tx_slots[CS42L43_ASP_MAX_CHANNELS];
50 int rx_slots[CS42L43_ASP_MAX_CHANNELS];
51 struct snd_pcm_hw_constraint_list constraint;
52
53 u32 eq_coeffs[CS42L43_N_EQ_COEFFS];
54
55 unsigned int refclk_src;
56 unsigned int refclk_freq;
57 struct completion pll_ready;
58
59 unsigned int decim_cache[4];
60 unsigned int adc_ena;
61 unsigned int hp_ena;
62
63 struct completion hp_startup;
64 struct completion hp_shutdown;
65 struct completion spkr_shutdown;
66 struct completion spkl_shutdown;
67 struct completion spkr_startup;
68 struct completion spkl_startup;
69 // Lock to ensure speaker VU updates don't clash
70 struct mutex spk_vu_lock;
71
72 // Lock for all jack detect operations
73 struct mutex jack_lock;
74 struct snd_soc_jack *jack_hp;
75
76 bool use_ring_sense;
77 unsigned int tip_debounce_ms;
78 unsigned int bias_low;
79 unsigned int bias_sense_ua;
80 unsigned int bias_ramp_ms;
81 unsigned int detect_us;
82 unsigned int buttons[CS42L43_N_BUTTONS];
83
84 struct delayed_work tip_sense_work;
85 struct delayed_work bias_sense_timeout;
86 struct delayed_work button_press_work;
87 struct work_struct button_release_work;
88 struct completion type_detect;
89 struct completion load_detect;
90
91 bool load_detect_running;
92 bool button_detect_running;
93 bool jack_present;
94 int jack_override;
95
96 struct work_struct hp_ilimit_work;
97 struct delayed_work hp_ilimit_clear_work;
98 bool hp_ilimited;
99 int hp_ilimit_count;
100 };
101
102 #if IS_REACHABLE(CONFIG_SND_SOC_CS42L43_SDW)
103
104 int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
105 struct snd_pcm_hw_params *params,
106 struct snd_soc_dai *dai);
107 int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
108 struct snd_soc_dai *dai);
109 int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction);
110
111 #else
112
cs42l43_sdw_add_peripheral(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)113 static inline int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
114 struct snd_pcm_hw_params *params,
115 struct snd_soc_dai *dai)
116 {
117 return -EINVAL;
118 }
119
120 #define cs42l43_sdw_remove_peripheral NULL
121 #define cs42l43_sdw_set_stream NULL
122
123 #endif
124
125 int cs42l43_set_jack(struct snd_soc_component *component,
126 struct snd_soc_jack *jack, void *d);
127 void cs42l43_bias_sense_timeout(struct work_struct *work);
128 void cs42l43_tip_sense_work(struct work_struct *work);
129 void cs42l43_button_press_work(struct work_struct *work);
130 void cs42l43_button_release_work(struct work_struct *work);
131 irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data);
132 irqreturn_t cs42l43_button_press(int irq, void *data);
133 irqreturn_t cs42l43_button_release(int irq, void *data);
134 irqreturn_t cs42l43_tip_sense(int irq, void *data);
135 int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
136 int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
137
138 extern const struct soc_enum cs42l43_jack_enum;
139
140 #endif /* CS42L43_ASOC_INT_H */
141