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cb07ef36 LPC |
1 | /* |
2 | * Machine driver for EVAL-ADAU1x81 on Analog Devices bfin | |
3 | * evaluation boards. | |
4 | * | |
5 | * Copyright 2011-2014 Analog Devices Inc. | |
6 | * Author: Lars-Peter Clausen <lars@metafoo.de> | |
7 | * | |
8 | * Licensed under the GPL-2 or later. | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/slab.h> | |
14 | #include <sound/core.h> | |
15 | #include <sound/pcm.h> | |
16 | #include <sound/soc.h> | |
17 | #include <sound/pcm_params.h> | |
18 | ||
19 | #include "../codecs/adau17x1.h" | |
20 | ||
21 | static const struct snd_soc_dapm_widget bfin_eval_adau1x81_dapm_widgets[] = { | |
22 | SND_SOC_DAPM_LINE("Stereo In", NULL), | |
23 | SND_SOC_DAPM_LINE("Beep", NULL), | |
24 | ||
25 | SND_SOC_DAPM_SPK("Speaker", NULL), | |
26 | SND_SOC_DAPM_HP("Headphone", NULL), | |
27 | }; | |
28 | ||
29 | static const struct snd_soc_dapm_route bfin_eval_adau1x81_dapm_routes[] = { | |
30 | { "BEEP", NULL, "Beep" }, | |
31 | { "LMIC", NULL, "Stereo In" }, | |
32 | { "LMIC", NULL, "Stereo In" }, | |
33 | ||
34 | { "Headphone", NULL, "AOUTL" }, | |
35 | { "Headphone", NULL, "AOUTR" }, | |
36 | { "Speaker", NULL, "SP" }, | |
37 | }; | |
38 | ||
39 | static int bfin_eval_adau1x81_hw_params(struct snd_pcm_substream *substream, | |
40 | struct snd_pcm_hw_params *params) | |
41 | { | |
42 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
43 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
44 | int pll_rate; | |
45 | int ret; | |
46 | ||
47 | switch (params_rate(params)) { | |
48 | case 48000: | |
49 | case 8000: | |
50 | case 12000: | |
51 | case 16000: | |
52 | case 24000: | |
53 | case 32000: | |
54 | case 96000: | |
55 | pll_rate = 48000 * 1024; | |
56 | break; | |
57 | case 44100: | |
58 | case 7350: | |
59 | case 11025: | |
60 | case 14700: | |
61 | case 22050: | |
62 | case 29400: | |
63 | case 88200: | |
64 | pll_rate = 44100 * 1024; | |
65 | break; | |
66 | default: | |
67 | return -EINVAL; | |
68 | } | |
69 | ||
70 | ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL, | |
71 | ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate); | |
72 | if (ret) | |
73 | return ret; | |
74 | ||
75 | ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate, | |
76 | SND_SOC_CLOCK_IN); | |
77 | ||
78 | return ret; | |
79 | } | |
80 | ||
81 | static const struct snd_soc_ops bfin_eval_adau1x81_ops = { | |
82 | .hw_params = bfin_eval_adau1x81_hw_params, | |
83 | }; | |
84 | ||
85 | static struct snd_soc_dai_link bfin_eval_adau1x81_dai = { | |
86 | .name = "adau1x81", | |
87 | .stream_name = "adau1x81", | |
88 | .cpu_dai_name = "bfin-i2s.0", | |
89 | .codec_dai_name = "adau-hifi", | |
90 | .platform_name = "bfin-i2s-pcm-audio", | |
91 | .codec_name = "adau1781.0-0038", | |
92 | .ops = &bfin_eval_adau1x81_ops, | |
93 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | | |
94 | SND_SOC_DAIFMT_CBM_CFM, | |
95 | }; | |
96 | ||
97 | static struct snd_soc_card bfin_eval_adau1x81 = { | |
98 | .name = "bfin-eval-adau1x81", | |
99 | .driver_name = "eval-adau1x81", | |
100 | .dai_link = &bfin_eval_adau1x81_dai, | |
101 | .num_links = 1, | |
102 | ||
103 | .dapm_widgets = bfin_eval_adau1x81_dapm_widgets, | |
104 | .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x81_dapm_widgets), | |
105 | .dapm_routes = bfin_eval_adau1x81_dapm_routes, | |
106 | .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x81_dapm_routes), | |
107 | .fully_routed = true, | |
108 | }; | |
109 | ||
110 | static int bfin_eval_adau1x81_probe(struct platform_device *pdev) | |
111 | { | |
112 | bfin_eval_adau1x81.dev = &pdev->dev; | |
113 | ||
114 | return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x81); | |
115 | } | |
116 | ||
117 | static struct platform_driver bfin_eval_adau1x81_driver = { | |
118 | .driver = { | |
119 | .name = "bfin-eval-adau1x81", | |
cb07ef36 LPC |
120 | .pm = &snd_soc_pm_ops, |
121 | }, | |
122 | .probe = bfin_eval_adau1x81_probe, | |
123 | }; | |
124 | module_platform_driver(bfin_eval_adau1x81_driver); | |
125 | ||
126 | MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); | |
127 | MODULE_DESCRIPTION("ALSA SoC bfin adau1x81 driver"); | |
128 | MODULE_LICENSE("GPL"); | |
129 | MODULE_ALIAS("platform:bfin-eval-adau1x81"); |