1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms |
4 | * |
5 | * Copyright (C) 2010 Texas Instruments, Inc |
6 | * |
7 | * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> |
8 | */ |
9 | #include <linux/module.h> |
10 | #include <linux/moduleparam.h> |
11 | #include <linux/init.h> |
12 | #include <linux/io.h> |
13 | #include <linux/delay.h> |
14 | #include <linux/pm.h> |
15 | #include <linux/platform_device.h> |
16 | #include <linux/device.h> |
17 | #include <linux/slab.h> |
18 | #include <linux/clk.h> |
19 | #include <linux/mfd/davinci_voicecodec.h> |
20 | #include <linux/spi/spi.h> |
21 | |
22 | #include <sound/core.h> |
23 | #include <sound/pcm.h> |
24 | #include <sound/pcm_params.h> |
25 | #include <sound/soc.h> |
26 | #include <sound/initval.h> |
27 | |
28 | static const struct snd_kcontrol_new cq93vc_snd_controls[] = { |
29 | SOC_SINGLE("PGA Capture Volume" , DAVINCI_VC_REG05, 0, 0x03, 0), |
30 | SOC_SINGLE("Mono DAC Playback Volume" , DAVINCI_VC_REG09, 0, 0x3f, 0), |
31 | }; |
32 | |
33 | static int cq93vc_mute(struct snd_soc_dai *dai, int mute, int direction) |
34 | { |
35 | struct snd_soc_component *component = dai->component; |
36 | u8 reg; |
37 | |
38 | if (mute) |
39 | reg = DAVINCI_VC_REG09_MUTE; |
40 | else |
41 | reg = 0; |
42 | |
43 | snd_soc_component_update_bits(component, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE, |
44 | val: reg); |
45 | |
46 | return 0; |
47 | } |
48 | |
49 | static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
50 | int clk_id, unsigned int freq, int dir) |
51 | { |
52 | switch (freq) { |
53 | case 22579200: |
54 | case 27000000: |
55 | case 33868800: |
56 | return 0; |
57 | } |
58 | |
59 | return -EINVAL; |
60 | } |
61 | |
62 | static int cq93vc_set_bias_level(struct snd_soc_component *component, |
63 | enum snd_soc_bias_level level) |
64 | { |
65 | switch (level) { |
66 | case SND_SOC_BIAS_ON: |
67 | snd_soc_component_write(component, DAVINCI_VC_REG12, |
68 | DAVINCI_VC_REG12_POWER_ALL_ON); |
69 | break; |
70 | case SND_SOC_BIAS_PREPARE: |
71 | break; |
72 | case SND_SOC_BIAS_STANDBY: |
73 | snd_soc_component_write(component, DAVINCI_VC_REG12, |
74 | DAVINCI_VC_REG12_POWER_ALL_OFF); |
75 | break; |
76 | case SND_SOC_BIAS_OFF: |
77 | /* force all power off */ |
78 | snd_soc_component_write(component, DAVINCI_VC_REG12, |
79 | DAVINCI_VC_REG12_POWER_ALL_OFF); |
80 | break; |
81 | } |
82 | |
83 | return 0; |
84 | } |
85 | |
86 | #define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) |
87 | #define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) |
88 | |
89 | static const struct snd_soc_dai_ops cq93vc_dai_ops = { |
90 | .mute_stream = cq93vc_mute, |
91 | .set_sysclk = cq93vc_set_dai_sysclk, |
92 | .no_capture_mute = 1, |
93 | }; |
94 | |
95 | static struct snd_soc_dai_driver cq93vc_dai = { |
96 | .name = "cq93vc-hifi" , |
97 | .playback = { |
98 | .stream_name = "Playback" , |
99 | .channels_min = 1, |
100 | .channels_max = 2, |
101 | .rates = CQ93VC_RATES, |
102 | .formats = CQ93VC_FORMATS,}, |
103 | .capture = { |
104 | .stream_name = "Capture" , |
105 | .channels_min = 1, |
106 | .channels_max = 2, |
107 | .rates = CQ93VC_RATES, |
108 | .formats = CQ93VC_FORMATS,}, |
109 | .ops = &cq93vc_dai_ops, |
110 | }; |
111 | |
112 | static int cq93vc_probe(struct snd_soc_component *component) |
113 | { |
114 | struct davinci_vc *davinci_vc = component->dev->platform_data; |
115 | |
116 | snd_soc_component_init_regmap(component, regmap: davinci_vc->regmap); |
117 | |
118 | return 0; |
119 | } |
120 | |
121 | static const struct snd_soc_component_driver soc_component_dev_cq93vc = { |
122 | .set_bias_level = cq93vc_set_bias_level, |
123 | .probe = cq93vc_probe, |
124 | .controls = cq93vc_snd_controls, |
125 | .num_controls = ARRAY_SIZE(cq93vc_snd_controls), |
126 | .idle_bias_on = 1, |
127 | .use_pmdown_time = 1, |
128 | .endianness = 1, |
129 | }; |
130 | |
131 | static int cq93vc_platform_probe(struct platform_device *pdev) |
132 | { |
133 | return devm_snd_soc_register_component(dev: &pdev->dev, |
134 | component_driver: &soc_component_dev_cq93vc, dai_drv: &cq93vc_dai, num_dai: 1); |
135 | } |
136 | |
137 | static struct platform_driver cq93vc_codec_driver = { |
138 | .driver = { |
139 | .name = "cq93vc-codec" , |
140 | }, |
141 | |
142 | .probe = cq93vc_platform_probe, |
143 | }; |
144 | |
145 | module_platform_driver(cq93vc_codec_driver); |
146 | |
147 | MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver" ); |
148 | MODULE_AUTHOR("Miguel Aguilar" ); |
149 | MODULE_LICENSE("GPL" ); |
150 | |