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/moduleparam.h> |
11 | #include <linux/pm_runtime.h> |
12 | #include <sound/sof.h> |
13 | |
14 | #include "sof-of-dev.h" |
15 | #include "ops.h" |
16 | |
17 | static char *fw_path; |
18 | module_param(fw_path, charp, 0444); |
19 | MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware." ); |
20 | |
21 | static char *tplg_path; |
22 | module_param(tplg_path, charp, 0444); |
23 | MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology." ); |
24 | |
25 | const struct dev_pm_ops sof_of_pm = { |
26 | .prepare = snd_sof_prepare, |
27 | .complete = snd_sof_complete, |
28 | SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume) |
29 | SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, |
30 | NULL) |
31 | }; |
32 | EXPORT_SYMBOL(sof_of_pm); |
33 | |
34 | static 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_mark_last_busy(dev); |
40 | pm_runtime_set_active(dev); |
41 | pm_runtime_enable(dev); |
42 | } |
43 | |
44 | int sof_of_probe(struct platform_device *pdev) |
45 | { |
46 | struct device *dev = &pdev->dev; |
47 | const struct sof_dev_desc *desc; |
48 | struct snd_sof_pdata *sof_pdata; |
49 | |
50 | dev_info(&pdev->dev, "DT DSP detected" ); |
51 | |
52 | sof_pdata = devm_kzalloc(dev, size: 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 | if (!desc->ops) { |
61 | dev_err(dev, "error: no matching DT descriptor ops\n" ); |
62 | return -ENODEV; |
63 | } |
64 | |
65 | sof_pdata->desc = desc; |
66 | sof_pdata->dev = &pdev->dev; |
67 | |
68 | sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default; |
69 | sof_pdata->ipc_file_profile_base.fw_path = fw_path; |
70 | sof_pdata->ipc_file_profile_base.tplg_path = tplg_path; |
71 | |
72 | /* set callback to be called on successful device probe to enable runtime_pm */ |
73 | sof_pdata->sof_probe_complete = sof_of_probe_complete; |
74 | |
75 | /* call sof helper for DSP hardware probe */ |
76 | return snd_sof_device_probe(dev, plat_data: sof_pdata); |
77 | } |
78 | EXPORT_SYMBOL(sof_of_probe); |
79 | |
80 | void sof_of_remove(struct platform_device *pdev) |
81 | { |
82 | pm_runtime_disable(dev: &pdev->dev); |
83 | |
84 | /* call sof helper for DSP hardware remove */ |
85 | snd_sof_device_remove(dev: &pdev->dev); |
86 | } |
87 | EXPORT_SYMBOL(sof_of_remove); |
88 | |
89 | void sof_of_shutdown(struct platform_device *pdev) |
90 | { |
91 | snd_sof_device_shutdown(dev: &pdev->dev); |
92 | } |
93 | EXPORT_SYMBOL(sof_of_shutdown); |
94 | |
95 | MODULE_LICENSE("Dual BSD/GPL" ); |
96 | |