1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Copyright 2007,2008 Simtec Electronics
4 //
5 // Based on sound/soc/pxa/spitz.c
6 // Copyright 2005 Wolfson Microelectronics PLC.
7 // Copyright 2005 Openedhand Ltd.
8
9 #include <linux/module.h>
10 #include <sound/soc.h>
11
12 #include <asm/mach-types.h>
13
14 #include "s3c2412-i2s.h"
15 #include "../codecs/wm8750.h"
16
17 static const struct snd_soc_dapm_route audio_map[] = {
18 { "Headphone Jack", NULL, "LOUT1" },
19 { "Headphone Jack", NULL, "ROUT1" },
20 { "Internal Speaker", NULL, "LOUT2" },
21 { "Internal Speaker", NULL, "ROUT2" },
22 { "LINPUT1", NULL, "Line Input" },
23 { "RINPUT1", NULL, "Line Input" },
24 };
25
26 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
27 SND_SOC_DAPM_HP("Headphone Jack", NULL),
28 SND_SOC_DAPM_SPK("Internal Speaker", NULL),
29 SND_SOC_DAPM_LINE("Line In", NULL),
30 };
31
jive_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)32 static int jive_hw_params(struct snd_pcm_substream *substream,
33 struct snd_pcm_hw_params *params)
34 {
35 struct snd_soc_pcm_runtime *rtd = substream->private_data;
36 struct snd_soc_dai *codec_dai = rtd->codec_dai;
37 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
38 struct s3c_i2sv2_rate_calc div;
39 unsigned int clk = 0;
40 int ret = 0;
41
42 switch (params_rate(params)) {
43 case 8000:
44 case 16000:
45 case 48000:
46 case 96000:
47 clk = 12288000;
48 break;
49 case 11025:
50 case 22050:
51 case 44100:
52 clk = 11289600;
53 break;
54 }
55
56 s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
57 s3c_i2sv2_get_clock(cpu_dai));
58
59 /* set the codec system clock for DAC and ADC */
60 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
61 SND_SOC_CLOCK_IN);
62 if (ret < 0)
63 return ret;
64
65 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
66 if (ret < 0)
67 return ret;
68
69 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
70 div.clk_div - 1);
71 if (ret < 0)
72 return ret;
73
74 return 0;
75 }
76
77 static const struct snd_soc_ops jive_ops = {
78 .hw_params = jive_hw_params,
79 };
80
81 SND_SOC_DAILINK_DEFS(wm8750,
82 DAILINK_COMP_ARRAY(COMP_CPU("s3c2412-i2s")),
83 DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001a", "wm8750-hifi")),
84 DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c2412-i2s")));
85
86 static struct snd_soc_dai_link jive_dai = {
87 .name = "wm8750",
88 .stream_name = "WM8750",
89 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
90 SND_SOC_DAIFMT_CBS_CFS,
91 .ops = &jive_ops,
92 SND_SOC_DAILINK_REG(wm8750),
93 };
94
95 /* jive audio machine driver */
96 static struct snd_soc_card snd_soc_machine_jive = {
97 .name = "Jive",
98 .owner = THIS_MODULE,
99 .dai_link = &jive_dai,
100 .num_links = 1,
101
102 .dapm_widgets = wm8750_dapm_widgets,
103 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
104 .dapm_routes = audio_map,
105 .num_dapm_routes = ARRAY_SIZE(audio_map),
106 .fully_routed = true,
107 };
108
109 static struct platform_device *jive_snd_device;
110
jive_init(void)111 static int __init jive_init(void)
112 {
113 int ret;
114
115 if (!machine_is_jive())
116 return 0;
117
118 printk("JIVE WM8750 Audio support\n");
119
120 jive_snd_device = platform_device_alloc("soc-audio", -1);
121 if (!jive_snd_device)
122 return -ENOMEM;
123
124 platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
125 ret = platform_device_add(jive_snd_device);
126
127 if (ret)
128 platform_device_put(jive_snd_device);
129
130 return ret;
131 }
132
jive_exit(void)133 static void __exit jive_exit(void)
134 {
135 platform_device_unregister(jive_snd_device);
136 }
137
138 module_init(jive_init);
139 module_exit(jive_exit);
140
141 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
142 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
143 MODULE_LICENSE("GPL");
144
