1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // |
3 | // Copyright (c) 2014, Insignal Co., Ltd. |
4 | // |
5 | // Author: Claude <claude@insginal.co.kr> |
6 | |
7 | #include <linux/module.h> |
8 | #include <linux/of.h> |
9 | #include <linux/platform_device.h> |
10 | #include <linux/clk.h> |
11 | |
12 | #include <sound/soc.h> |
13 | #include <sound/soc-dapm.h> |
14 | #include <sound/pcm.h> |
15 | #include <sound/pcm_params.h> |
16 | |
17 | #include "../codecs/wm8994.h" |
18 | #include "i2s.h" |
19 | |
20 | static int arndale_rt5631_hw_params(struct snd_pcm_substream *substream, |
21 | struct snd_pcm_hw_params *params) |
22 | { |
23 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
24 | struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); |
25 | struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); |
26 | int rfs, ret; |
27 | unsigned long rclk; |
28 | |
29 | rfs = 256; |
30 | |
31 | rclk = params_rate(p: params) * rfs; |
32 | |
33 | ret = snd_soc_dai_set_sysclk(dai: cpu_dai, SAMSUNG_I2S_CDCLK, |
34 | freq: 0, SND_SOC_CLOCK_OUT); |
35 | if (ret < 0) |
36 | return ret; |
37 | |
38 | ret = snd_soc_dai_set_sysclk(dai: cpu_dai, SAMSUNG_I2S_RCLKSRC_0, |
39 | freq: 0, SND_SOC_CLOCK_OUT); |
40 | |
41 | if (ret < 0) |
42 | return ret; |
43 | |
44 | ret = snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: 0, freq: rclk, SND_SOC_CLOCK_OUT); |
45 | if (ret < 0) |
46 | return ret; |
47 | |
48 | return 0; |
49 | } |
50 | |
51 | static const struct snd_soc_ops arndale_rt5631_ops = { |
52 | .hw_params = arndale_rt5631_hw_params, |
53 | }; |
54 | |
55 | static int arndale_wm1811_hw_params(struct snd_pcm_substream *substream, |
56 | struct snd_pcm_hw_params *params) |
57 | { |
58 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
59 | struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); |
60 | unsigned int rfs, rclk; |
61 | |
62 | /* Ensure AIF1CLK is >= 3 MHz for optimal performance */ |
63 | if (params_width(p: params) == 24) |
64 | rfs = 384; |
65 | else if (params_rate(p: params) == 8000 || params_rate(p: params) == 11025) |
66 | rfs = 512; |
67 | else |
68 | rfs = 256; |
69 | |
70 | rclk = params_rate(p: params) * rfs; |
71 | |
72 | /* |
73 | * We add 1 to the frequency value to ensure proper EPLL setting |
74 | * for each audio sampling rate (see epll_24mhz_tbl in drivers/clk/ |
75 | * samsung/clk-exynos5250.c for list of available EPLL rates). |
76 | * The CODEC uses clk API and the value will be rounded hence the MCLK1 |
77 | * clock's frequency will still be exact multiple of the sample rate. |
78 | */ |
79 | return snd_soc_dai_set_sysclk(dai: codec_dai, WM8994_SYSCLK_MCLK1, |
80 | freq: rclk + 1, SND_SOC_CLOCK_IN); |
81 | } |
82 | |
83 | static const struct snd_soc_ops arndale_wm1811_ops = { |
84 | .hw_params = arndale_wm1811_hw_params, |
85 | }; |
86 | |
87 | SND_SOC_DAILINK_DEFS(rt5631_hifi, |
88 | DAILINK_COMP_ARRAY(COMP_EMPTY()), |
89 | DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-aif1" )), |
90 | DAILINK_COMP_ARRAY(COMP_EMPTY())); |
91 | |
92 | static struct snd_soc_dai_link arndale_rt5631_dai[] = { |
93 | { |
94 | .name = "RT5631 HiFi" , |
95 | .stream_name = "Primary" , |
96 | .dai_fmt = SND_SOC_DAIFMT_I2S |
97 | | SND_SOC_DAIFMT_NB_NF |
98 | | SND_SOC_DAIFMT_CBS_CFS, |
99 | .ops = &arndale_rt5631_ops, |
100 | SND_SOC_DAILINK_REG(rt5631_hifi), |
101 | }, |
102 | }; |
103 | |
104 | SND_SOC_DAILINK_DEFS(wm1811_hifi, |
105 | DAILINK_COMP_ARRAY(COMP_EMPTY()), |
106 | DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1" )), |
107 | DAILINK_COMP_ARRAY(COMP_EMPTY())); |
108 | |
109 | static struct snd_soc_dai_link arndale_wm1811_dai[] = { |
110 | { |
111 | .name = "WM1811 HiFi" , |
112 | .stream_name = "Primary" , |
113 | .dai_fmt = SND_SOC_DAIFMT_I2S |
114 | | SND_SOC_DAIFMT_NB_NF |
115 | | SND_SOC_DAIFMT_CBM_CFM, |
116 | .ops = &arndale_wm1811_ops, |
117 | SND_SOC_DAILINK_REG(wm1811_hifi), |
118 | }, |
119 | }; |
120 | |
121 | static struct snd_soc_card arndale_rt5631 = { |
122 | .name = "Arndale RT5631" , |
123 | .owner = THIS_MODULE, |
124 | .dai_link = arndale_rt5631_dai, |
125 | .num_links = ARRAY_SIZE(arndale_rt5631_dai), |
126 | }; |
127 | |
128 | static struct snd_soc_card arndale_wm1811 = { |
129 | .name = "Arndale WM1811" , |
130 | .owner = THIS_MODULE, |
131 | .dai_link = arndale_wm1811_dai, |
132 | .num_links = ARRAY_SIZE(arndale_wm1811_dai), |
133 | }; |
134 | |
135 | static void arndale_put_of_nodes(struct snd_soc_card *card) |
136 | { |
137 | struct snd_soc_dai_link *dai_link; |
138 | int i; |
139 | |
140 | for_each_card_prelinks(card, i, dai_link) { |
141 | of_node_put(node: dai_link->cpus->of_node); |
142 | of_node_put(node: dai_link->codecs->of_node); |
143 | } |
144 | } |
145 | |
146 | static int arndale_audio_probe(struct platform_device *pdev) |
147 | { |
148 | struct device_node *np = pdev->dev.of_node; |
149 | struct snd_soc_card *card; |
150 | struct snd_soc_dai_link *dai_link; |
151 | int ret; |
152 | |
153 | card = (struct snd_soc_card *)of_device_get_match_data(dev: &pdev->dev); |
154 | card->dev = &pdev->dev; |
155 | dai_link = card->dai_link; |
156 | |
157 | dai_link->cpus->of_node = of_parse_phandle(np, phandle_name: "samsung,audio-cpu" , index: 0); |
158 | if (!dai_link->cpus->of_node) { |
159 | dev_err(&pdev->dev, |
160 | "Property 'samsung,audio-cpu' missing or invalid\n" ); |
161 | return -EINVAL; |
162 | } |
163 | |
164 | if (!dai_link->platforms->name) |
165 | dai_link->platforms->of_node = dai_link->cpus->of_node; |
166 | |
167 | dai_link->codecs->of_node = of_parse_phandle(np, phandle_name: "samsung,audio-codec" , index: 0); |
168 | if (!dai_link->codecs->of_node) { |
169 | dev_err(&pdev->dev, |
170 | "Property 'samsung,audio-codec' missing or invalid\n" ); |
171 | ret = -EINVAL; |
172 | goto err_put_of_nodes; |
173 | } |
174 | |
175 | ret = devm_snd_soc_register_card(dev: card->dev, card); |
176 | if (ret) { |
177 | dev_err_probe(dev: &pdev->dev, err: ret, |
178 | fmt: "snd_soc_register_card() failed\n" ); |
179 | goto err_put_of_nodes; |
180 | } |
181 | return 0; |
182 | |
183 | err_put_of_nodes: |
184 | arndale_put_of_nodes(card); |
185 | return ret; |
186 | } |
187 | |
188 | static void arndale_audio_remove(struct platform_device *pdev) |
189 | { |
190 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
191 | |
192 | arndale_put_of_nodes(card); |
193 | } |
194 | |
195 | static const struct of_device_id arndale_audio_of_match[] = { |
196 | { .compatible = "samsung,arndale-rt5631" , .data = &arndale_rt5631 }, |
197 | { .compatible = "samsung,arndale-alc5631" , .data = &arndale_rt5631 }, |
198 | { .compatible = "samsung,arndale-wm1811" , .data = &arndale_wm1811 }, |
199 | {}, |
200 | }; |
201 | MODULE_DEVICE_TABLE(of, arndale_audio_of_match); |
202 | |
203 | static struct platform_driver arndale_audio_driver = { |
204 | .driver = { |
205 | .name = "arndale-audio" , |
206 | .pm = &snd_soc_pm_ops, |
207 | .of_match_table = arndale_audio_of_match, |
208 | }, |
209 | .probe = arndale_audio_probe, |
210 | .remove_new = arndale_audio_remove, |
211 | }; |
212 | |
213 | module_platform_driver(arndale_audio_driver); |
214 | |
215 | MODULE_AUTHOR("Claude <claude@insignal.co.kr>" ); |
216 | MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board" ); |
217 | MODULE_LICENSE("GPL" ); |
218 | |