1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Copyright 2012 Freescale Semiconductor, Inc.
4 // Copyright 2012 Linaro Ltd.
5
6 #include <linux/module.h>
7 #include <linux/of.h>
8 #include <linux/of_platform.h>
9 #include <linux/i2c.h>
10 #include <linux/clk.h>
11 #include <sound/soc.h>
12
13 #include "../codecs/sgtl5000.h"
14 #include "imx-audmux.h"
15
16 #define DAI_NAME_SIZE 32
17
18 struct imx_sgtl5000_data {
19 struct snd_soc_dai_link dai;
20 struct snd_soc_card card;
21 char codec_dai_name[DAI_NAME_SIZE];
22 char platform_name[DAI_NAME_SIZE];
23 struct clk *codec_clk;
24 unsigned int clk_frequency;
25 };
26
imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime * rtd)27 static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
28 {
29 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(rtd->card);
30 struct device *dev = rtd->card->dev;
31 int ret;
32
33 ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), SGTL5000_SYSCLK,
34 data->clk_frequency, SND_SOC_CLOCK_IN);
35 if (ret) {
36 dev_err(dev, "could not set codec driver clock params\n");
37 return ret;
38 }
39
40 return 0;
41 }
42
43 static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
44 SND_SOC_DAPM_MIC("Mic Jack", NULL),
45 SND_SOC_DAPM_LINE("Line In Jack", NULL),
46 SND_SOC_DAPM_HP("Headphone Jack", NULL),
47 SND_SOC_DAPM_SPK("Line Out Jack", NULL),
48 SND_SOC_DAPM_SPK("Ext Spk", NULL),
49 };
50
imx_sgtl5000_probe(struct platform_device * pdev)51 static int imx_sgtl5000_probe(struct platform_device *pdev)
52 {
53 struct device_node *np = pdev->dev.of_node;
54 struct device_node *ssi_np, *codec_np;
55 struct platform_device *ssi_pdev;
56 struct i2c_client *codec_dev;
57 struct imx_sgtl5000_data *data = NULL;
58 struct snd_soc_dai_link_component *comp;
59 int int_port, ext_port;
60 int ret;
61
62 ret = of_property_read_u32(np, "mux-int-port", &int_port);
63 if (ret) {
64 dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
65 return ret;
66 }
67 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
68 if (ret) {
69 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
70 return ret;
71 }
72
73 /*
74 * The port numbering in the hardware manual starts at 1, while
75 * the audmux API expects it starts at 0.
76 */
77 int_port--;
78 ext_port--;
79 ret = imx_audmux_v2_configure_port(int_port,
80 IMX_AUDMUX_V2_PTCR_SYN |
81 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
82 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
83 IMX_AUDMUX_V2_PTCR_TFSDIR |
84 IMX_AUDMUX_V2_PTCR_TCLKDIR,
85 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
86 if (ret) {
87 dev_err(&pdev->dev, "audmux internal port setup failed\n");
88 return ret;
89 }
90 ret = imx_audmux_v2_configure_port(ext_port,
91 IMX_AUDMUX_V2_PTCR_SYN,
92 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
93 if (ret) {
94 dev_err(&pdev->dev, "audmux external port setup failed\n");
95 return ret;
96 }
97
98 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
99 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
100 if (!ssi_np || !codec_np) {
101 dev_err(&pdev->dev, "phandle missing or invalid\n");
102 ret = -EINVAL;
103 goto fail;
104 }
105
106 ssi_pdev = of_find_device_by_node(ssi_np);
107 if (!ssi_pdev) {
108 dev_dbg(&pdev->dev, "failed to find SSI platform device\n");
109 ret = -EPROBE_DEFER;
110 goto fail;
111 }
112 put_device(&ssi_pdev->dev);
113 codec_dev = of_find_i2c_device_by_node(codec_np);
114 if (!codec_dev) {
115 dev_dbg(&pdev->dev, "failed to find codec platform device\n");
116 ret = -EPROBE_DEFER;
117 goto fail;
118 }
119
120 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
121 if (!data) {
122 ret = -ENOMEM;
123 goto put_device;
124 }
125
126 comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
127 if (!comp) {
128 ret = -ENOMEM;
129 goto put_device;
130 }
131
132 data->codec_clk = clk_get(&codec_dev->dev, NULL);
133 if (IS_ERR(data->codec_clk)) {
134 ret = PTR_ERR(data->codec_clk);
135 goto put_device;
136 }
137
138 data->clk_frequency = clk_get_rate(data->codec_clk);
139
140 data->dai.cpus = &comp[0];
141 data->dai.codecs = &comp[1];
142 data->dai.platforms = &comp[2];
143
144 data->dai.num_cpus = 1;
145 data->dai.num_codecs = 1;
146 data->dai.num_platforms = 1;
147
148 data->dai.name = "HiFi";
149 data->dai.stream_name = "HiFi";
150 data->dai.codecs->dai_name = "sgtl5000";
151 data->dai.codecs->of_node = codec_np;
152 data->dai.cpus->of_node = ssi_np;
153 data->dai.platforms->of_node = ssi_np;
154 data->dai.init = &imx_sgtl5000_dai_init;
155 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
156 SND_SOC_DAIFMT_CBP_CFP;
157
158 data->card.dev = &pdev->dev;
159 ret = snd_soc_of_parse_card_name(&data->card, "model");
160 if (ret)
161 goto put_device;
162 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
163 if (ret)
164 goto put_device;
165 data->card.num_links = 1;
166 data->card.owner = THIS_MODULE;
167 data->card.dai_link = &data->dai;
168 data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
169 data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
170
171 platform_set_drvdata(pdev, &data->card);
172 snd_soc_card_set_drvdata(&data->card, data);
173
174 ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
175 if (ret) {
176 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
177 goto put_device;
178 }
179
180 of_node_put(ssi_np);
181 of_node_put(codec_np);
182
183 return 0;
184
185 put_device:
186 put_device(&codec_dev->dev);
187 fail:
188 if (data && !IS_ERR(data->codec_clk))
189 clk_put(data->codec_clk);
190 of_node_put(ssi_np);
191 of_node_put(codec_np);
192
193 return ret;
194 }
195
imx_sgtl5000_remove(struct platform_device * pdev)196 static void imx_sgtl5000_remove(struct platform_device *pdev)
197 {
198 struct snd_soc_card *card = platform_get_drvdata(pdev);
199 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);
200
201 clk_put(data->codec_clk);
202 }
203
204 static const struct of_device_id imx_sgtl5000_dt_ids[] = {
205 { .compatible = "fsl,imx-audio-sgtl5000", },
206 { /* sentinel */ }
207 };
208 MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
209
210 static struct platform_driver imx_sgtl5000_driver = {
211 .driver = {
212 .name = "imx-sgtl5000",
213 .pm = &snd_soc_pm_ops,
214 .of_match_table = imx_sgtl5000_dt_ids,
215 },
216 .probe = imx_sgtl5000_probe,
217 .remove_new = imx_sgtl5000_remove,
218 };
219 module_platform_driver(imx_sgtl5000_driver);
220
221 MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
222 MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
223 MODULE_LICENSE("GPL v2");
224 MODULE_ALIAS("platform:imx-sgtl5000");
225
