Linux kernel mirror (for testing)
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linux
1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2//
3// Copyright 2019 NXP
4//
5// Author: Daniel Baluta <daniel.baluta@nxp.com>
6//
7
8#include <linux/firmware.h>
9#include <linux/module.h>
10#include <linux/pm_runtime.h>
11#include <sound/sof.h>
12
13#include "ops.h"
14
15extern struct snd_sof_dsp_ops sof_imx8_ops;
16extern struct snd_sof_dsp_ops sof_imx8x_ops;
17extern struct snd_sof_dsp_ops sof_imx8m_ops;
18
19/* platform specific devices */
20#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
21static struct sof_dev_desc sof_of_imx8qxp_desc = {
22 .default_fw_path = "imx/sof",
23 .default_tplg_path = "imx/sof-tplg",
24 .default_fw_filename = "sof-imx8x.ri",
25 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
26 .ops = &sof_imx8x_ops,
27};
28
29static struct sof_dev_desc sof_of_imx8qm_desc = {
30 .default_fw_path = "imx/sof",
31 .default_tplg_path = "imx/sof-tplg",
32 .default_fw_filename = "sof-imx8.ri",
33 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
34 .ops = &sof_imx8_ops,
35};
36#endif
37
38#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8M)
39static struct sof_dev_desc sof_of_imx8mp_desc = {
40 .default_fw_path = "imx/sof",
41 .default_tplg_path = "imx/sof-tplg",
42 .default_fw_filename = "sof-imx8m.ri",
43 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
44 .ops = &sof_imx8m_ops,
45};
46#endif
47
48static const struct dev_pm_ops sof_of_pm = {
49 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
50 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
51 NULL)
52};
53
54static void sof_of_probe_complete(struct device *dev)
55{
56 /* allow runtime_pm */
57 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
58 pm_runtime_use_autosuspend(dev);
59 pm_runtime_enable(dev);
60}
61
62static int sof_of_probe(struct platform_device *pdev)
63{
64 struct device *dev = &pdev->dev;
65 const struct sof_dev_desc *desc;
66 struct snd_sof_pdata *sof_pdata;
67 const struct snd_sof_dsp_ops *ops;
68 int ret;
69
70 dev_info(&pdev->dev, "DT DSP detected");
71
72 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
73 if (!sof_pdata)
74 return -ENOMEM;
75
76 desc = device_get_match_data(dev);
77 if (!desc)
78 return -ENODEV;
79
80 /* get ops for platform */
81 ops = desc->ops;
82 if (!ops) {
83 dev_err(dev, "error: no matching DT descriptor ops\n");
84 return -ENODEV;
85 }
86
87 sof_pdata->desc = desc;
88 sof_pdata->dev = &pdev->dev;
89 sof_pdata->fw_filename = desc->default_fw_filename;
90
91 /* TODO: read alternate fw and tplg filenames from DT */
92 sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
93 sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;
94
95#if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
96 /* set callback to enable runtime_pm */
97 sof_pdata->sof_probe_complete = sof_of_probe_complete;
98#endif
99 /* call sof helper for DSP hardware probe */
100 ret = snd_sof_device_probe(dev, sof_pdata);
101 if (ret) {
102 dev_err(dev, "error: failed to probe DSP hardware\n");
103 return ret;
104 }
105
106#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
107 sof_of_probe_complete(dev);
108#endif
109
110 return ret;
111}
112
113static int sof_of_remove(struct platform_device *pdev)
114{
115 pm_runtime_disable(&pdev->dev);
116
117 /* call sof helper for DSP hardware remove */
118 snd_sof_device_remove(&pdev->dev);
119
120 return 0;
121}
122
123static const struct of_device_id sof_of_ids[] = {
124#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
125 { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
126 { .compatible = "fsl,imx8qm-dsp", .data = &sof_of_imx8qm_desc},
127#endif
128#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8M)
129 { .compatible = "fsl,imx8mp-dsp", .data = &sof_of_imx8mp_desc},
130#endif
131 { }
132};
133MODULE_DEVICE_TABLE(of, sof_of_ids);
134
135/* DT driver definition */
136static struct platform_driver snd_sof_of_driver = {
137 .probe = sof_of_probe,
138 .remove = sof_of_remove,
139 .driver = {
140 .name = "sof-audio-of",
141 .pm = &sof_of_pm,
142 .of_match_table = sof_of_ids,
143 },
144};
145module_platform_driver(snd_sof_of_driver);
146
147MODULE_LICENSE("Dual BSD/GPL");