1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
// SPDX-License-Identifier: GPL-2.0
// Copyright 2017-2020 NXP
#include <linux/module.h>
#include <linux/of_platform.h>
#include <sound/jack.h>
#include <sound/pcm_params.h>
#include <sound/hdmi-codec.h>
#include "fsl_sai.h"
/**
* struct cpu_priv - CPU private data
* @sysclk_id: SYSCLK ids for set_sysclk()
* @slot_width: Slot width of each frame
*
* Note: [1] for tx and [0] for rx
*/
struct cpu_priv {
u32 sysclk_id[2];
u32 slot_width;
};
struct imx_hdmi_data {
struct snd_soc_dai_link dai;
struct snd_soc_card card;
struct snd_soc_jack hdmi_jack;
struct snd_soc_jack_pin hdmi_jack_pin;
struct cpu_priv cpu_priv;
u32 dai_fmt;
};
static int imx_hdmi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct imx_hdmi_data *data = snd_soc_card_get_drvdata(rtd->card);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct snd_soc_card *card = rtd->card;
struct device *dev = card->dev;
u32 slot_width = data->cpu_priv.slot_width;
int ret;
/* MCLK always is (256 or 192) * rate. */
ret = snd_soc_dai_set_sysclk(cpu_dai, data->cpu_priv.sysclk_id[tx],
8 * slot_width * params_rate(params),
tx ? SND_SOC_CLOCK_OUT : SND_SOC_CLOCK_IN);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0, 2, slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
return ret;
}
return 0;
}
static const struct snd_soc_ops imx_hdmi_ops = {
.hw_params = imx_hdmi_hw_params,
};
static const struct snd_soc_dapm_widget imx_hdmi_widgets[] = {
SND_SOC_DAPM_LINE("HDMI Jack", NULL),
};
static int imx_hdmi_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
struct imx_hdmi_data *data = snd_soc_card_get_drvdata(card);
int ret;
data->hdmi_jack_pin.pin = "HDMI Jack";
data->hdmi_jack_pin.mask = SND_JACK_LINEOUT;
/* enable jack detection */
ret = snd_soc_card_jack_new_pins(card, "HDMI Jack", SND_JACK_LINEOUT,
&data->hdmi_jack,
&data->hdmi_jack_pin, 1);
if (ret) {
dev_err(card->dev, "Can't new HDMI Jack %d\n", ret);
return ret;
}
ret = snd_soc_component_set_jack(component, &data->hdmi_jack, NULL);
if (ret && ret != -ENOTSUPP) {
dev_err(card->dev, "Can't set HDMI Jack %d\n", ret);
return ret;
}
return 0;
};
static int imx_hdmi_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
bool hdmi_out = of_property_read_bool(np, "hdmi-out");
bool hdmi_in = of_property_read_bool(np, "hdmi-in");
struct snd_soc_dai_link_component *dlc;
struct platform_device *cpu_pdev;
struct device_node *cpu_np;
struct imx_hdmi_data *data;
int ret;
dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL);
if (!dlc)
return -ENOMEM;
cpu_np = of_parse_phandle(np, "audio-cpu", 0);
if (!cpu_np) {
dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
cpu_pdev = of_find_device_by_node(cpu_np);
if (!cpu_pdev) {
dev_err(&pdev->dev, "failed to find SAI platform device\n");
ret = -EINVAL;
goto fail;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
put_device(&cpu_pdev->dev);
goto fail;
}
data->dai.cpus = &dlc[0];
data->dai.num_cpus = 1;
data->dai.platforms = &dlc[1];
data->dai.num_platforms = 1;
data->dai.codecs = &dlc[2];
data->dai.num_codecs = 1;
data->dai.name = "i.MX HDMI";
data->dai.stream_name = "i.MX HDMI";
data->dai.cpus->dai_name = dev_name(&cpu_pdev->dev);
data->dai.platforms->of_node = cpu_np;
data->dai.ops = &imx_hdmi_ops;
data->dai.playback_only = true;
data->dai.capture_only = false;
data->dai.init = imx_hdmi_init;
put_device(&cpu_pdev->dev);
if (of_node_name_eq(cpu_np, "sai")) {
data->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
data->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
}
if (of_device_is_compatible(np, "fsl,imx-audio-sii902x")) {
data->dai_fmt = SND_SOC_DAIFMT_LEFT_J;
data->cpu_priv.slot_width = 24;
} else {
data->dai_fmt = SND_SOC_DAIFMT_I2S;
data->cpu_priv.slot_width = 32;
}
if ((hdmi_out && hdmi_in) || (!hdmi_out && !hdmi_in)) {
dev_err(&pdev->dev, "Invalid HDMI DAI link\n");
ret = -EINVAL;
goto fail;
}
if (hdmi_out) {
data->dai.playback_only = true;
data->dai.capture_only = false;
data->dai.codecs->dai_name = "i2s-hifi";
data->dai.codecs->name = "hdmi-audio-codec.1";
data->dai.dai_fmt = data->dai_fmt |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBC_CFC;
}
if (hdmi_in) {
data->dai.playback_only = false;
data->dai.capture_only = true;
data->dai.codecs->dai_name = "i2s-hifi";
data->dai.codecs->name = "hdmi-audio-codec.2";
data->dai.dai_fmt = data->dai_fmt |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBP_CFP;
}
data->card.dapm_widgets = imx_hdmi_widgets;
data->card.num_dapm_widgets = ARRAY_SIZE(imx_hdmi_widgets);
data->card.dev = &pdev->dev;
data->card.owner = THIS_MODULE;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto fail;
data->card.num_links = 1;
data->card.dai_link = &data->dai;
snd_soc_card_set_drvdata(&data->card, data);
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret) {
dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
goto fail;
}
fail:
of_node_put(cpu_np);
return ret;
}
static const struct of_device_id imx_hdmi_dt_ids[] = {
{ .compatible = "fsl,imx-audio-hdmi", },
{ .compatible = "fsl,imx-audio-sii902x", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_hdmi_dt_ids);
static struct platform_driver imx_hdmi_driver = {
.driver = {
.name = "imx-hdmi",
.pm = &snd_soc_pm_ops,
.of_match_table = imx_hdmi_dt_ids,
},
.probe = imx_hdmi_probe,
};
module_platform_driver(imx_hdmi_driver);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("Freescale i.MX hdmi audio ASoC machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-hdmi");
|
