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(rtd->codec_dai, 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 int int_port, ext_port;
59 int ret;
60
61 ret = of_property_read_u32(np, "mux-int-port", &int_port);
62 if (ret) {
63 dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
64 return ret;
65 }
66 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
67 if (ret) {
68 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
69 return ret;
70 }
71
72 /*
73 * The port numbering in the hardware manual starts at 1, while
74 * the audmux API expects it starts at 0.
75 */
76 int_port--;
77 ext_port--;
78 ret = imx_audmux_v2_configure_port(int_port,
79 IMX_AUDMUX_V2_PTCR_SYN |
80 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
81 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
82 IMX_AUDMUX_V2_PTCR_TFSDIR |
83 IMX_AUDMUX_V2_PTCR_TCLKDIR,
84 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
85 if (ret) {
86 dev_err(&pdev->dev, "audmux internal port setup failed\n");
87 return ret;
88 }
89 ret = imx_audmux_v2_configure_port(ext_port,
90 IMX_AUDMUX_V2_PTCR_SYN,
91 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
92 if (ret) {
93 dev_err(&pdev->dev, "audmux external port setup failed\n");
94 return ret;
95 }
96
97 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
98 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
99 if (!ssi_np || !codec_np) {
100 dev_err(&pdev->dev, "phandle missing or invalid\n");
101 ret = -EINVAL;
102 goto fail;
103 }
104
105 ssi_pdev = of_find_device_by_node(ssi_np);
106 if (!ssi_pdev) {
107 dev_err(&pdev->dev, "failed to find SSI platform device\n");
108 ret = -EPROBE_DEFER;
109 goto fail;
110 }
111 put_device(&ssi_pdev->dev);
112 codec_dev = of_find_i2c_device_by_node(codec_np);
113 if (!codec_dev) {
114 dev_err(&pdev->dev, "failed to find codec platform device\n");
115 ret = -EPROBE_DEFER;
116 goto fail;
117 }
118
119 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
120 if (!data) {
121 ret = -ENOMEM;
122 goto fail;
123 }
124
125 data->codec_clk = clk_get(&codec_dev->dev, NULL);
126 if (IS_ERR(data->codec_clk)) {
127 ret = PTR_ERR(data->codec_clk);
128 goto fail;
129 }
130
131 data->clk_frequency = clk_get_rate(data->codec_clk);
132
133 data->dai.name = "HiFi";
134 data->dai.stream_name = "HiFi";
135 data->dai.codec_dai_name = "sgtl5000";
136 data->dai.codec_of_node = codec_np;
137 data->dai.cpu_of_node = ssi_np;
138 data->dai.platform_of_node = ssi_np;
139 data->dai.init = &imx_sgtl5000_dai_init;
140 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
141 SND_SOC_DAIFMT_CBM_CFM;
142
143 data->card.dev = &pdev->dev;
144 ret = snd_soc_of_parse_card_name(&data->card, "model");
145 if (ret)
146 goto fail;
147 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
148 if (ret)
149 goto fail;
150 data->card.num_links = 1;
151 data->card.owner = THIS_MODULE;
152 data->card.dai_link = &data->dai;
153 data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
154 data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
155
156 platform_set_drvdata(pdev, &data->card);
157 snd_soc_card_set_drvdata(&data->card, data);
158
159 ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
160 if (ret) {
161 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
162 goto fail;
163 }
164
165 of_node_put(ssi_np);
166 of_node_put(codec_np);
167
168 return 0;
169
170 fail:
171 if (data && !IS_ERR(data->codec_clk))
172 clk_put(data->codec_clk);
173 of_node_put(ssi_np);
174 of_node_put(codec_np);
175
176 return ret;
177 }
178
imx_sgtl5000_remove(struct platform_device * pdev)179 static int imx_sgtl5000_remove(struct platform_device *pdev)
180 {
181 struct snd_soc_card *card = platform_get_drvdata(pdev);
182 struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);
183
184 clk_put(data->codec_clk);
185
186 return 0;
187 }
188
189 static const struct of_device_id imx_sgtl5000_dt_ids[] = {
190 { .compatible = "fsl,imx-audio-sgtl5000", },
191 { /* sentinel */ }
192 };
193 MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
194
195 static struct platform_driver imx_sgtl5000_driver = {
196 .driver = {
197 .name = "imx-sgtl5000",
198 .pm = &snd_soc_pm_ops,
199 .of_match_table = imx_sgtl5000_dt_ids,
200 },
201 .probe = imx_sgtl5000_probe,
202 .remove = imx_sgtl5000_remove,
203 };
204 module_platform_driver(imx_sgtl5000_driver);
205
206 MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
207 MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
208 MODULE_LICENSE("GPL v2");
209 MODULE_ALIAS("platform:imx-sgtl5000");
210