Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: (GPL-2.0 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;
16
17/* platform specific devices */
18#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
19static struct sof_dev_desc sof_of_imx8qxp_desc = {
20 .default_fw_path = "imx/sof",
21 .default_tplg_path = "imx/sof-tplg",
22 .default_fw_filename = "sof-imx8.ri",
23 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
24 .ops = &sof_imx8_ops,
25};
26#endif
27
28static const struct dev_pm_ops sof_of_pm = {
29 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
30 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
31 NULL)
32};
33
34static void sof_of_probe_complete(struct device *dev)
35{
36 /* allow runtime_pm */
37 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
38 pm_runtime_use_autosuspend(dev);
39 pm_runtime_enable(dev);
40}
41
42static int sof_of_probe(struct platform_device *pdev)
43{
44 struct device *dev = &pdev->dev;
45 const struct sof_dev_desc *desc;
46 struct snd_sof_pdata *sof_pdata;
47 const struct snd_sof_dsp_ops *ops;
48 int ret;
49
50 dev_info(&pdev->dev, "DT DSP detected");
51
52 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
53 if (!sof_pdata)
54 return -ENOMEM;
55
56 desc = device_get_match_data(dev);
57 if (!desc)
58 return -ENODEV;
59
60 /* get ops for platform */
61 ops = desc->ops;
62 if (!ops) {
63 dev_err(dev, "error: no matching DT descriptor ops\n");
64 return -ENODEV;
65 }
66
67 sof_pdata->desc = desc;
68 sof_pdata->dev = &pdev->dev;
69 sof_pdata->fw_filename = desc->default_fw_filename;
70
71 /* TODO: read alternate fw and tplg filenames from DT */
72 sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
73 sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;
74
75#if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
76 /* set callback to enable runtime_pm */
77 sof_pdata->sof_probe_complete = sof_of_probe_complete;
78#endif
79 /* call sof helper for DSP hardware probe */
80 ret = snd_sof_device_probe(dev, sof_pdata);
81 if (ret) {
82 dev_err(dev, "error: failed to probe DSP hardware\n");
83 return ret;
84 }
85
86#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
87 sof_of_probe_complete(dev);
88#endif
89
90 return ret;
91}
92
93static int sof_of_remove(struct platform_device *pdev)
94{
95 pm_runtime_disable(&pdev->dev);
96
97 /* call sof helper for DSP hardware remove */
98 snd_sof_device_remove(&pdev->dev);
99
100 return 0;
101}
102
103static const struct of_device_id sof_of_ids[] = {
104#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
105 { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
106#endif
107 { }
108};
109MODULE_DEVICE_TABLE(of, sof_of_ids);
110
111/* DT driver definition */
112static struct platform_driver snd_sof_of_driver = {
113 .probe = sof_of_probe,
114 .remove = sof_of_remove,
115 .driver = {
116 .name = "sof-audio-of",
117 .pm = &sof_of_pm,
118 .of_match_table = sof_of_ids,
119 },
120};
121module_platform_driver(snd_sof_of_driver);
122
123MODULE_LICENSE("Dual BSD/GPL");