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