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// This file is provided under a dual BSD/GPLv2 license. When using or
4// redistributing this file, you may do so under either license.
5//
6// Copyright(c) 2018 Intel Corporation. All rights reserved.
7//
8// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
9//
10
11#include <linux/acpi.h>
12#include <linux/firmware.h>
13#include <linux/module.h>
14#include <linux/pm_runtime.h>
15#include <sound/soc-acpi.h>
16#include <sound/soc-acpi-intel-match.h>
17#include <sound/sof.h>
18#include "../intel/common/soc-intel-quirks.h"
19#include "ops.h"
20
21/* platform specific devices */
22#include "intel/shim.h"
23
24static char *fw_path;
25module_param(fw_path, charp, 0444);
26MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");
27
28static char *tplg_path;
29module_param(tplg_path, charp, 0444);
30MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
31
32static int sof_acpi_debug;
33module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444);
34MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)");
35
36#define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0)
37
38#if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
39static const struct sof_dev_desc sof_acpi_broadwell_desc = {
40 .machines = snd_soc_acpi_intel_broadwell_machines,
41 .resindex_lpe_base = 0,
42 .resindex_pcicfg_base = 1,
43 .resindex_imr_base = -1,
44 .irqindex_host_ipc = 0,
45 .chip_info = &bdw_chip_info,
46 .default_fw_path = "intel/sof",
47 .default_tplg_path = "intel/sof-tplg",
48 .default_fw_filename = "sof-bdw.ri",
49 .nocodec_tplg_filename = "sof-bdw-nocodec.tplg",
50 .ops = &sof_bdw_ops,
51};
52#endif
53
54#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
55
56/* BYTCR uses different IRQ index */
57static const struct sof_dev_desc sof_acpi_baytrailcr_desc = {
58 .machines = snd_soc_acpi_intel_baytrail_machines,
59 .resindex_lpe_base = 0,
60 .resindex_pcicfg_base = 1,
61 .resindex_imr_base = 2,
62 .irqindex_host_ipc = 0,
63 .chip_info = &byt_chip_info,
64 .default_fw_path = "intel/sof",
65 .default_tplg_path = "intel/sof-tplg",
66 .default_fw_filename = "sof-byt.ri",
67 .nocodec_tplg_filename = "sof-byt-nocodec.tplg",
68 .ops = &sof_byt_ops,
69};
70
71static const struct sof_dev_desc sof_acpi_baytrail_desc = {
72 .machines = snd_soc_acpi_intel_baytrail_machines,
73 .resindex_lpe_base = 0,
74 .resindex_pcicfg_base = 1,
75 .resindex_imr_base = 2,
76 .irqindex_host_ipc = 5,
77 .chip_info = &byt_chip_info,
78 .default_fw_path = "intel/sof",
79 .default_tplg_path = "intel/sof-tplg",
80 .default_fw_filename = "sof-byt.ri",
81 .nocodec_tplg_filename = "sof-byt-nocodec.tplg",
82 .ops = &sof_byt_ops,
83};
84
85static const struct sof_dev_desc sof_acpi_cherrytrail_desc = {
86 .machines = snd_soc_acpi_intel_cherrytrail_machines,
87 .resindex_lpe_base = 0,
88 .resindex_pcicfg_base = 1,
89 .resindex_imr_base = 2,
90 .irqindex_host_ipc = 5,
91 .chip_info = &cht_chip_info,
92 .default_fw_path = "intel/sof",
93 .default_tplg_path = "intel/sof-tplg",
94 .default_fw_filename = "sof-cht.ri",
95 .nocodec_tplg_filename = "sof-cht-nocodec.tplg",
96 .ops = &sof_cht_ops,
97};
98
99#endif
100
101static const struct dev_pm_ops sof_acpi_pm = {
102 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
103 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
104 snd_sof_runtime_idle)
105};
106
107static void sof_acpi_probe_complete(struct device *dev)
108{
109 if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)
110 return;
111
112 /* allow runtime_pm */
113 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
114 pm_runtime_use_autosuspend(dev);
115 pm_runtime_enable(dev);
116}
117
118static int sof_acpi_probe(struct platform_device *pdev)
119{
120 struct device *dev = &pdev->dev;
121 const struct sof_dev_desc *desc;
122 struct snd_sof_pdata *sof_pdata;
123 const struct snd_sof_dsp_ops *ops;
124 int ret;
125
126 dev_dbg(&pdev->dev, "ACPI DSP detected");
127
128 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
129 if (!sof_pdata)
130 return -ENOMEM;
131
132 desc = device_get_match_data(dev);
133 if (!desc)
134 return -ENODEV;
135
136#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
137 if (desc == &sof_acpi_baytrail_desc && soc_intel_is_byt_cr(pdev))
138 desc = &sof_acpi_baytrailcr_desc;
139#endif
140
141 /* get ops for platform */
142 ops = desc->ops;
143 if (!ops) {
144 dev_err(dev, "error: no matching ACPI descriptor ops\n");
145 return -ENODEV;
146 }
147
148 sof_pdata->desc = desc;
149 sof_pdata->dev = &pdev->dev;
150 sof_pdata->fw_filename = desc->default_fw_filename;
151
152 /* alternate fw and tplg filenames ? */
153 if (fw_path)
154 sof_pdata->fw_filename_prefix = fw_path;
155 else
156 sof_pdata->fw_filename_prefix =
157 sof_pdata->desc->default_fw_path;
158
159 if (tplg_path)
160 sof_pdata->tplg_filename_prefix = tplg_path;
161 else
162 sof_pdata->tplg_filename_prefix =
163 sof_pdata->desc->default_tplg_path;
164
165#if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
166 /* set callback to enable runtime_pm */
167 sof_pdata->sof_probe_complete = sof_acpi_probe_complete;
168#endif
169 /* call sof helper for DSP hardware probe */
170 ret = snd_sof_device_probe(dev, sof_pdata);
171 if (ret) {
172 dev_err(dev, "error: failed to probe DSP hardware!\n");
173 return ret;
174 }
175
176#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
177 sof_acpi_probe_complete(dev);
178#endif
179
180 return ret;
181}
182
183static int sof_acpi_remove(struct platform_device *pdev)
184{
185 if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME))
186 pm_runtime_disable(&pdev->dev);
187
188 /* call sof helper for DSP hardware remove */
189 snd_sof_device_remove(&pdev->dev);
190
191 return 0;
192}
193
194static const struct acpi_device_id sof_acpi_match[] = {
195#if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
196 { "INT3438", (unsigned long)&sof_acpi_broadwell_desc },
197#endif
198#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
199 { "80860F28", (unsigned long)&sof_acpi_baytrail_desc },
200 { "808622A8", (unsigned long)&sof_acpi_cherrytrail_desc },
201#endif
202 { }
203};
204MODULE_DEVICE_TABLE(acpi, sof_acpi_match);
205
206/* acpi_driver definition */
207static struct platform_driver snd_sof_acpi_driver = {
208 .probe = sof_acpi_probe,
209 .remove = sof_acpi_remove,
210 .driver = {
211 .name = "sof-audio-acpi",
212 .pm = &sof_acpi_pm,
213 .acpi_match_table = ACPI_PTR(sof_acpi_match),
214 },
215};
216module_platform_driver(snd_sof_acpi_driver);
217
218MODULE_LICENSE("Dual BSD/GPL");
219MODULE_IMPORT_NS(SND_SOC_SOF_BAYTRAIL);
220MODULE_IMPORT_NS(SND_SOC_SOF_BROADWELL);