xref: /openbmc/linux/sound/soc/codecs/cs42l43.h (revision fc918cbe)
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_ASP_MAX_CHANNELS	6
32 #define CS42L43_N_EQ_COEFFS		15
33 
34 #define CS42L43_N_BUTTONS	6
35 
36 struct cs42l43_codec {
37 	struct device *dev;
38 	struct cs42l43 *core;
39 	struct snd_soc_component *component;
40 
41 	struct clk *mclk;
42 
43 	int n_slots;
44 	int slot_width;
45 	int tx_slots[CS42L43_ASP_MAX_CHANNELS];
46 	int rx_slots[CS42L43_ASP_MAX_CHANNELS];
47 	struct snd_pcm_hw_constraint_list constraint;
48 
49 	u32 eq_coeffs[CS42L43_N_EQ_COEFFS];
50 
51 	unsigned int refclk_src;
52 	unsigned int refclk_freq;
53 	struct completion pll_ready;
54 
55 	unsigned int decim_cache[4];
56 	unsigned int adc_ena;
57 	unsigned int hp_ena;
58 
59 	struct completion hp_startup;
60 	struct completion hp_shutdown;
61 	struct completion spkr_shutdown;
62 	struct completion spkl_shutdown;
63 	struct completion spkr_startup;
64 	struct completion spkl_startup;
65 	// Lock to ensure speaker VU updates don't clash
66 	struct mutex spk_vu_lock;
67 
68 	// Lock for all jack detect operations
69 	struct mutex jack_lock;
70 	struct snd_soc_jack *jack_hp;
71 
72 	bool use_ring_sense;
73 	unsigned int tip_debounce_ms;
74 	unsigned int bias_low;
75 	unsigned int bias_sense_ua;
76 	unsigned int bias_ramp_ms;
77 	unsigned int detect_us;
78 	unsigned int buttons[CS42L43_N_BUTTONS];
79 
80 	struct delayed_work tip_sense_work;
81 	struct delayed_work bias_sense_timeout;
82 	struct delayed_work button_press_work;
83 	struct work_struct button_release_work;
84 	struct completion type_detect;
85 	struct completion load_detect;
86 
87 	bool load_detect_running;
88 	bool button_detect_running;
89 	bool jack_present;
90 	int jack_override;
91 };
92 
93 #if IS_REACHABLE(CONFIG_SND_SOC_CS42L43_SDW)
94 
95 int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
96 			       struct snd_pcm_hw_params *params,
97 			       struct snd_soc_dai *dai);
98 int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
99 				  struct snd_soc_dai *dai);
100 int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction);
101 
102 #else
103 
cs42l43_sdw_add_peripheral(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)104 static inline int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
105 					     struct snd_pcm_hw_params *params,
106 					     struct snd_soc_dai *dai)
107 {
108 	return -EINVAL;
109 }
110 
111 #define cs42l43_sdw_remove_peripheral NULL
112 #define cs42l43_sdw_set_stream NULL
113 
114 #endif
115 
116 int cs42l43_set_jack(struct snd_soc_component *component,
117 		     struct snd_soc_jack *jack, void *d);
118 void cs42l43_bias_sense_timeout(struct work_struct *work);
119 void cs42l43_tip_sense_work(struct work_struct *work);
120 void cs42l43_button_press_work(struct work_struct *work);
121 void cs42l43_button_release_work(struct work_struct *work);
122 irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data);
123 irqreturn_t cs42l43_button_press(int irq, void *data);
124 irqreturn_t cs42l43_button_release(int irq, void *data);
125 irqreturn_t cs42l43_tip_sense(int irq, void *data);
126 int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
127 int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
128 
129 extern const struct soc_enum cs42l43_jack_enum;
130 
131 #endif /* CS42L43_ASOC_INT_H */
132