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
17static 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
26static 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
32static int jive_hw_params(struct snd_pcm_substream *substream,
33			  struct snd_pcm_hw_params *params)
34{
35	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
36	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
37	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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
77static const struct snd_soc_ops jive_ops = {
78	.hw_params	= jive_hw_params,
79};
80
81SND_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
86static 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 */
96static 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
109static struct platform_device *jive_snd_device;
110
111static 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
133static void __exit jive_exit(void)
134{
135	platform_device_unregister(jive_snd_device);
136}
137
138module_init(jive_init);
139module_exit(jive_exit);
140
141MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
142MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
143MODULE_LICENSE("GPL");
144