xref: /linux/sound/soc/codecs/cs42l43.h (revision 377773dd6be500d17b94de08271ff9ed643554f1)
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 #ifndef CS42L43_ASOC_INT_H
10 #define CS42L43_ASOC_INT_H
11 
12 #include <linux/completion.h>
13 #include <linux/mutex.h>
14 #include <linux/types.h>
15 #include <linux/workqueue.h>
16 #include <sound/pcm.h>
17 
18 #define CS42L43_INTERNAL_SYSCLK		24576000
19 #define CS42L43_DEFAULT_SLOTS		0x3F
20 
21 #define CS42L43_PLL_TIMEOUT_MS		200
22 #define CS42L43_SPK_TIMEOUT_MS		100
23 #define CS42L43_HP_TIMEOUT_MS		2000
24 #define CS42L43_LOAD_TIMEOUT_MS		1000
25 
26 #define CS42L43_HP_ILIMIT_BACKOFF_MS	1000
27 #define CS42L43_HP_ILIMIT_DECAY_MS	300
28 #define CS42L43_HP_ILIMIT_MAX_COUNT	4
29 
30 #define CS42L43_ASP_MAX_CHANNELS	6
31 #define CS42L43_N_EQ_COEFFS		15
32 
33 #define CS42L43_N_BUTTONS	6
34 
35 struct clk;
36 struct device;
37 
38 struct snd_soc_component;
39 struct snd_soc_jack;
40 
41 struct cs42l43;
42 
43 struct cs42l43_codec {
44 	struct device *dev;
45 	struct cs42l43 *core;
46 	struct snd_soc_component *component;
47 
48 	struct clk *mclk;
49 
50 	int n_slots;
51 	int slot_width;
52 	int tx_slots[CS42L43_ASP_MAX_CHANNELS];
53 	int rx_slots[CS42L43_ASP_MAX_CHANNELS];
54 	struct snd_pcm_hw_constraint_list constraint;
55 
56 	u32 eq_coeffs[CS42L43_N_EQ_COEFFS];
57 
58 	unsigned int refclk_src;
59 	unsigned int refclk_freq;
60 	struct completion pll_ready;
61 
62 	unsigned int decim_cache[4];
63 	unsigned int adc_ena;
64 	unsigned int hp_ena;
65 
66 	struct completion hp_startup;
67 	struct completion hp_shutdown;
68 	struct completion spkr_shutdown;
69 	struct completion spkl_shutdown;
70 	struct completion spkr_startup;
71 	struct completion spkl_startup;
72 	// Lock to ensure speaker VU updates don't clash
73 	struct mutex spk_vu_lock;
74 
75 	// Lock for all jack detect operations
76 	struct mutex jack_lock;
77 	struct snd_soc_jack *jack_hp;
78 
79 	bool use_ring_sense;
80 	unsigned int tip_debounce_ms;
81 	unsigned int bias_low;
82 	unsigned int bias_sense_ua;
83 	unsigned int bias_ramp_ms;
84 	unsigned int detect_us;
85 	unsigned int buttons[CS42L43_N_BUTTONS];
86 
87 	struct delayed_work tip_sense_work;
88 	struct delayed_work bias_sense_timeout;
89 	struct delayed_work button_press_work;
90 	struct work_struct button_release_work;
91 	struct completion type_detect;
92 	struct completion load_detect;
93 
94 	bool load_detect_running;
95 	bool button_detect_running;
96 	bool jack_present;
97 	int jack_override;
98 
99 	struct work_struct hp_ilimit_work;
100 	struct delayed_work hp_ilimit_clear_work;
101 	bool hp_ilimited;
102 	int hp_ilimit_count;
103 
104 	struct snd_kcontrol *kctl[5];
105 };
106 
107 #if IS_REACHABLE(CONFIG_SND_SOC_CS42L43_SDW)
108 
109 int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
110 			       struct snd_pcm_hw_params *params,
111 			       struct snd_soc_dai *dai);
112 int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
113 				  struct snd_soc_dai *dai);
114 int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction);
115 
116 #else
117 
cs42l43_sdw_add_peripheral(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)118 static inline int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
119 					     struct snd_pcm_hw_params *params,
120 					     struct snd_soc_dai *dai)
121 {
122 	return -EINVAL;
123 }
124 
125 #define cs42l43_sdw_remove_peripheral NULL
126 #define cs42l43_sdw_set_stream NULL
127 
128 #endif
129 
130 int cs42l43_set_jack(struct snd_soc_component *component,
131 		     struct snd_soc_jack *jack, void *d);
132 void cs42l43_bias_sense_timeout(struct work_struct *work);
133 void cs42l43_tip_sense_work(struct work_struct *work);
134 void cs42l43_button_press_work(struct work_struct *work);
135 void cs42l43_button_release_work(struct work_struct *work);
136 irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data);
137 irqreturn_t cs42l43_button_press(int irq, void *data);
138 irqreturn_t cs42l43_button_release(int irq, void *data);
139 irqreturn_t cs42l43_tip_sense(int irq, void *data);
140 int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
141 int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
142 
143 extern const struct soc_enum cs42l43_jack_enum;
144 
145 #endif /* CS42L43_ASOC_INT_H */
146