1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun #include <linux/module.h>
4*4882a593Smuzhiyun #include <sound/soc.h>
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <asm/mach-types.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include "../codecs/wm8940.h"
9*4882a593Smuzhiyun #include "pxa2xx-i2s.h"
10*4882a593Smuzhiyun
imote2_asoc_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)11*4882a593Smuzhiyun static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
12*4882a593Smuzhiyun struct snd_pcm_hw_params *params)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
15*4882a593Smuzhiyun struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
16*4882a593Smuzhiyun struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
17*4882a593Smuzhiyun unsigned int clk = 0;
18*4882a593Smuzhiyun int ret;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun switch (params_rate(params)) {
21*4882a593Smuzhiyun case 8000:
22*4882a593Smuzhiyun case 16000:
23*4882a593Smuzhiyun case 48000:
24*4882a593Smuzhiyun case 96000:
25*4882a593Smuzhiyun clk = 12288000;
26*4882a593Smuzhiyun break;
27*4882a593Smuzhiyun case 11025:
28*4882a593Smuzhiyun case 22050:
29*4882a593Smuzhiyun case 44100:
30*4882a593Smuzhiyun clk = 11289600;
31*4882a593Smuzhiyun break;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
35*4882a593Smuzhiyun SND_SOC_CLOCK_IN);
36*4882a593Smuzhiyun if (ret < 0)
37*4882a593Smuzhiyun return ret;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun /* set the I2S system clock as input (unused) */
40*4882a593Smuzhiyun ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
41*4882a593Smuzhiyun SND_SOC_CLOCK_OUT);
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun return ret;
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun static const struct snd_soc_ops imote2_asoc_ops = {
47*4882a593Smuzhiyun .hw_params = imote2_asoc_hw_params,
48*4882a593Smuzhiyun };
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun SND_SOC_DAILINK_DEFS(wm8940,
51*4882a593Smuzhiyun DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),
52*4882a593Smuzhiyun DAILINK_COMP_ARRAY(COMP_CODEC("wm8940-codec.0-0034",
53*4882a593Smuzhiyun "wm8940-hifi")),
54*4882a593Smuzhiyun DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun static struct snd_soc_dai_link imote2_dai = {
57*4882a593Smuzhiyun .name = "WM8940",
58*4882a593Smuzhiyun .stream_name = "WM8940",
59*4882a593Smuzhiyun .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
60*4882a593Smuzhiyun SND_SOC_DAIFMT_CBS_CFS,
61*4882a593Smuzhiyun .ops = &imote2_asoc_ops,
62*4882a593Smuzhiyun SND_SOC_DAILINK_REG(wm8940),
63*4882a593Smuzhiyun };
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun static struct snd_soc_card imote2 = {
66*4882a593Smuzhiyun .name = "Imote2",
67*4882a593Smuzhiyun .owner = THIS_MODULE,
68*4882a593Smuzhiyun .dai_link = &imote2_dai,
69*4882a593Smuzhiyun .num_links = 1,
70*4882a593Smuzhiyun };
71*4882a593Smuzhiyun
imote2_probe(struct platform_device * pdev)72*4882a593Smuzhiyun static int imote2_probe(struct platform_device *pdev)
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun struct snd_soc_card *card = &imote2;
75*4882a593Smuzhiyun int ret;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun card->dev = &pdev->dev;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun ret = devm_snd_soc_register_card(&pdev->dev, card);
80*4882a593Smuzhiyun if (ret)
81*4882a593Smuzhiyun dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
82*4882a593Smuzhiyun ret);
83*4882a593Smuzhiyun return ret;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun static struct platform_driver imote2_driver = {
87*4882a593Smuzhiyun .driver = {
88*4882a593Smuzhiyun .name = "imote2-audio",
89*4882a593Smuzhiyun .pm = &snd_soc_pm_ops,
90*4882a593Smuzhiyun },
91*4882a593Smuzhiyun .probe = imote2_probe,
92*4882a593Smuzhiyun };
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun module_platform_driver(imote2_driver);
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun MODULE_AUTHOR("Jonathan Cameron");
97*4882a593Smuzhiyun MODULE_DESCRIPTION("ALSA SoC Imote 2");
98*4882a593Smuzhiyun MODULE_LICENSE("GPL");
99*4882a593Smuzhiyun MODULE_ALIAS("platform:imote2-audio");
100