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13#include <linux/module.h>
14#include <linux/of.h>
15#include <linux/of_platform.h>
16#include <linux/of_i2c.h>
17#include <linux/clk.h>
18#include <sound/soc.h>
19
20#include "../codecs/sgtl5000.h"
21#include "imx-audmux.h"
22
23#define DAI_NAME_SIZE 32
24
25struct imx_sgtl5000_data {
26 struct snd_soc_dai_link dai;
27 struct snd_soc_card card;
28 char codec_dai_name[DAI_NAME_SIZE];
29 char platform_name[DAI_NAME_SIZE];
30 struct clk *codec_clk;
31 unsigned int clk_frequency;
32};
33
34static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
35{
36 struct imx_sgtl5000_data *data = container_of(rtd->card,
37 struct imx_sgtl5000_data, card);
38 struct device *dev = rtd->card->dev;
39 int ret;
40
41 ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
42 data->clk_frequency, SND_SOC_CLOCK_IN);
43 if (ret) {
44 dev_err(dev, "could not set codec driver clock params\n");
45 return ret;
46 }
47
48 return 0;
49}
50
51static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
52 SND_SOC_DAPM_MIC("Mic Jack", NULL),
53 SND_SOC_DAPM_LINE("Line In Jack", NULL),
54 SND_SOC_DAPM_HP("Headphone Jack", NULL),
55 SND_SOC_DAPM_SPK("Line Out Jack", NULL),
56 SND_SOC_DAPM_SPK("Ext Spk", NULL),
57};
58
59static int imx_sgtl5000_probe(struct platform_device *pdev)
60{
61 struct device_node *np = pdev->dev.of_node;
62 struct device_node *ssi_np, *codec_np;
63 struct platform_device *ssi_pdev;
64 struct i2c_client *codec_dev;
65 struct imx_sgtl5000_data *data;
66 int int_port, ext_port;
67 int ret;
68
69 ret = of_property_read_u32(np, "mux-int-port", &int_port);
70 if (ret) {
71 dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
72 return ret;
73 }
74 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
75 if (ret) {
76 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
77 return ret;
78 }
79
80
81
82
83
84 int_port--;
85 ext_port--;
86 ret = imx_audmux_v2_configure_port(int_port,
87 IMX_AUDMUX_V2_PTCR_SYN |
88 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
89 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
90 IMX_AUDMUX_V2_PTCR_TFSDIR |
91 IMX_AUDMUX_V2_PTCR_TCLKDIR,
92 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
93 if (ret) {
94 dev_err(&pdev->dev, "audmux internal port setup failed\n");
95 return ret;
96 }
97 ret = imx_audmux_v2_configure_port(ext_port,
98 IMX_AUDMUX_V2_PTCR_SYN,
99 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
100 if (ret) {
101 dev_err(&pdev->dev, "audmux external port setup failed\n");
102 return ret;
103 }
104
105 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
106 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
107 if (!ssi_np || !codec_np) {
108 dev_err(&pdev->dev, "phandle missing or invalid\n");
109 ret = -EINVAL;
110 goto fail;
111 }
112
113 ssi_pdev = of_find_device_by_node(ssi_np);
114 if (!ssi_pdev) {
115 dev_err(&pdev->dev, "failed to find SSI platform device\n");
116 ret = -EINVAL;
117 goto fail;
118 }
119 codec_dev = of_find_i2c_device_by_node(codec_np);
120 if (!codec_dev) {
121 dev_err(&pdev->dev, "failed to find codec platform device\n");
122 return -EINVAL;
123 }
124
125 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
126 if (!data) {
127 ret = -ENOMEM;
128 goto fail;
129 }
130
131 data->codec_clk = clk_get(&codec_dev->dev, NULL);
132 if (IS_ERR(data->codec_clk)) {
133
134 data->codec_clk = NULL;
135 ret = of_property_read_u32(codec_np, "clock-frequency",
136 &data->clk_frequency);
137 if (ret) {
138 dev_err(&codec_dev->dev,
139 "clock-frequency missing or invalid\n");
140 goto fail;
141 }
142 } else {
143 data->clk_frequency = clk_get_rate(data->codec_clk);
144 clk_prepare_enable(data->codec_clk);
145 }
146
147 data->dai.name = "HiFi";
148 data->dai.stream_name = "HiFi";
149 data->dai.codec_dai_name = "sgtl5000";
150 data->dai.codec_of_node = codec_np;
151 data->dai.cpu_of_node = ssi_np;
152 data->dai.platform_name = "imx-pcm-audio";
153 data->dai.init = &imx_sgtl5000_dai_init;
154 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
155 SND_SOC_DAIFMT_CBM_CFM;
156
157 data->card.dev = &pdev->dev;
158 ret = snd_soc_of_parse_card_name(&data->card, "model");
159 if (ret)
160 goto clk_fail;
161 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
162 if (ret)
163 goto clk_fail;
164 data->card.num_links = 1;
165 data->card.owner = THIS_MODULE;
166 data->card.dai_link = &data->dai;
167 data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
168 data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
169
170 ret = snd_soc_register_card(&data->card);
171 if (ret) {
172 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
173 goto clk_fail;
174 }
175
176 platform_set_drvdata(pdev, data);
177clk_fail:
178 clk_put(data->codec_clk);
179fail:
180 if (ssi_np)
181 of_node_put(ssi_np);
182 if (codec_np)
183 of_node_put(codec_np);
184
185 return ret;
186}
187
188static int imx_sgtl5000_remove(struct platform_device *pdev)
189{
190 struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
191
192 if (data->codec_clk) {
193 clk_disable_unprepare(data->codec_clk);
194 clk_put(data->codec_clk);
195 }
196 snd_soc_unregister_card(&data->card);
197
198 return 0;
199}
200
201static const struct of_device_id imx_sgtl5000_dt_ids[] = {
202 { .compatible = "fsl,imx-audio-sgtl5000", },
203 { }
204};
205MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
206
207static struct platform_driver imx_sgtl5000_driver = {
208 .driver = {
209 .name = "imx-sgtl5000",
210 .owner = THIS_MODULE,
211 .of_match_table = imx_sgtl5000_dt_ids,
212 },
213 .probe = imx_sgtl5000_probe,
214 .remove = imx_sgtl5000_remove,
215};
216module_platform_driver(imx_sgtl5000_driver);
217
218MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
219MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
220MODULE_LICENSE("GPL v2");
221MODULE_ALIAS("platform:imx-sgtl5000");
222
