1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * osk5912.c -- SoC audio for OSK 5912 |
4 | * |
5 | * Copyright (C) 2008 Mistral Solutions |
6 | * |
7 | * Contact: Arun KS <arunks@mistralsolutions.com> |
8 | */ |
9 | |
10 | #include <linux/clk.h> |
11 | #include <linux/platform_device.h> |
12 | #include <sound/core.h> |
13 | #include <sound/pcm.h> |
14 | #include <sound/soc.h> |
15 | |
16 | #include <asm/mach-types.h> |
17 | #include <linux/module.h> |
18 | #include <linux/platform_data/asoc-ti-mcbsp.h> |
19 | |
20 | #include "omap-mcbsp.h" |
21 | #include "../codecs/tlv320aic23.h" |
22 | |
23 | #define CODEC_CLOCK 12000000 |
24 | |
25 | static struct clk *tlv320aic23_mclk; |
26 | |
27 | static int osk_startup(struct snd_pcm_substream *substream) |
28 | { |
29 | return clk_prepare_enable(clk: tlv320aic23_mclk); |
30 | } |
31 | |
32 | static void osk_shutdown(struct snd_pcm_substream *substream) |
33 | { |
34 | clk_disable_unprepare(clk: tlv320aic23_mclk); |
35 | } |
36 | |
37 | static int osk_hw_params(struct snd_pcm_substream *substream, |
38 | struct snd_pcm_hw_params *params) |
39 | { |
40 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
41 | struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); |
42 | int err; |
43 | |
44 | /* Set the codec system clock for DAC and ADC */ |
45 | err = |
46 | snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: 0, CODEC_CLOCK, SND_SOC_CLOCK_IN); |
47 | |
48 | if (err < 0) { |
49 | printk(KERN_ERR "can't set codec system clock\n" ); |
50 | return err; |
51 | } |
52 | |
53 | return err; |
54 | } |
55 | |
56 | static const struct snd_soc_ops osk_ops = { |
57 | .startup = osk_startup, |
58 | .hw_params = osk_hw_params, |
59 | .shutdown = osk_shutdown, |
60 | }; |
61 | |
62 | static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { |
63 | SND_SOC_DAPM_HP("Headphone Jack" , NULL), |
64 | SND_SOC_DAPM_LINE("Line In" , NULL), |
65 | SND_SOC_DAPM_MIC("Mic Jack" , NULL), |
66 | }; |
67 | |
68 | static const struct snd_soc_dapm_route audio_map[] = { |
69 | {"Headphone Jack" , NULL, "LHPOUT" }, |
70 | {"Headphone Jack" , NULL, "RHPOUT" }, |
71 | |
72 | {"LLINEIN" , NULL, "Line In" }, |
73 | {"RLINEIN" , NULL, "Line In" }, |
74 | |
75 | {"MICIN" , NULL, "Mic Jack" }, |
76 | }; |
77 | |
78 | /* Digital audio interface glue - connects codec <--> CPU */ |
79 | SND_SOC_DAILINK_DEFS(aic23, |
80 | DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.1" )), |
81 | DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec" , |
82 | "tlv320aic23-hifi" )), |
83 | DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.1" ))); |
84 | |
85 | static struct snd_soc_dai_link osk_dai = { |
86 | .name = "TLV320AIC23" , |
87 | .stream_name = "AIC23" , |
88 | .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | |
89 | SND_SOC_DAIFMT_CBM_CFM, |
90 | .ops = &osk_ops, |
91 | SND_SOC_DAILINK_REG(aic23), |
92 | }; |
93 | |
94 | /* Audio machine driver */ |
95 | static struct snd_soc_card snd_soc_card_osk = { |
96 | .name = "OSK5912" , |
97 | .owner = THIS_MODULE, |
98 | .dai_link = &osk_dai, |
99 | .num_links = 1, |
100 | |
101 | .dapm_widgets = tlv320aic23_dapm_widgets, |
102 | .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), |
103 | .dapm_routes = audio_map, |
104 | .num_dapm_routes = ARRAY_SIZE(audio_map), |
105 | }; |
106 | |
107 | static struct platform_device *osk_snd_device; |
108 | |
109 | static int __init osk_soc_init(void) |
110 | { |
111 | int err; |
112 | u32 curRate; |
113 | struct device *dev; |
114 | |
115 | if (!(machine_is_omap_osk())) |
116 | return -ENODEV; |
117 | |
118 | osk_snd_device = platform_device_alloc(name: "soc-audio" , id: -1); |
119 | if (!osk_snd_device) |
120 | return -ENOMEM; |
121 | |
122 | platform_set_drvdata(pdev: osk_snd_device, data: &snd_soc_card_osk); |
123 | err = platform_device_add(pdev: osk_snd_device); |
124 | if (err) |
125 | goto err1; |
126 | |
127 | dev = &osk_snd_device->dev; |
128 | |
129 | tlv320aic23_mclk = clk_get(dev, id: "mclk" ); |
130 | if (IS_ERR(ptr: tlv320aic23_mclk)) { |
131 | printk(KERN_ERR "Could not get mclk clock\n" ); |
132 | err = PTR_ERR(ptr: tlv320aic23_mclk); |
133 | goto err2; |
134 | } |
135 | |
136 | /* |
137 | * Configure 12 MHz output on MCLK. |
138 | */ |
139 | curRate = (uint) clk_get_rate(clk: tlv320aic23_mclk); |
140 | if (curRate != CODEC_CLOCK) { |
141 | if (clk_set_rate(clk: tlv320aic23_mclk, CODEC_CLOCK)) { |
142 | printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n" ); |
143 | err = -ECANCELED; |
144 | goto err3; |
145 | } |
146 | } |
147 | |
148 | printk(KERN_INFO "MCLK = %d [%d]\n" , |
149 | (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK); |
150 | |
151 | return 0; |
152 | |
153 | err3: |
154 | clk_put(clk: tlv320aic23_mclk); |
155 | err2: |
156 | platform_device_del(pdev: osk_snd_device); |
157 | err1: |
158 | platform_device_put(pdev: osk_snd_device); |
159 | |
160 | return err; |
161 | |
162 | } |
163 | |
164 | static void __exit osk_soc_exit(void) |
165 | { |
166 | clk_put(clk: tlv320aic23_mclk); |
167 | platform_device_unregister(osk_snd_device); |
168 | } |
169 | |
170 | module_init(osk_soc_init); |
171 | module_exit(osk_soc_exit); |
172 | |
173 | MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>" ); |
174 | MODULE_DESCRIPTION("ALSA SoC OSK 5912" ); |
175 | MODULE_LICENSE("GPL" ); |
176 | |