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1 | /* |
2 | * Intel SST loader on ACPI systems | |
3 | * | |
4 | * Copyright (C) 2013, Intel Corporation. All rights reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License version | |
8 | * 2 as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/acpi.h> | |
18 | #include <linux/device.h> | |
19 | #include <linux/firmware.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/platform_device.h> | |
22 | ||
23 | #include "sst-dsp.h" | |
24 | ||
25 | #define SST_LPT_DSP_DMA_ADDR_OFFSET 0x0F0000 | |
26 | #define SST_WPT_DSP_DMA_ADDR_OFFSET 0x0FE000 | |
27 | #define SST_LPT_DSP_DMA_SIZE (1024 - 1) | |
28 | ||
29 | /* Descriptor for SST ASoC machine driver */ | |
30 | struct sst_acpi_mach { | |
31 | /* ACPI ID for the matching machine driver. Audio codec for instance */ | |
32 | const u8 id[ACPI_ID_LEN]; | |
33 | /* machine driver name */ | |
34 | const char *drv_name; | |
35 | /* firmware file name */ | |
36 | const char *fw_filename; | |
37 | }; | |
38 | ||
39 | /* Descriptor for setting up SST platform data */ | |
40 | struct sst_acpi_desc { | |
41 | const char *drv_name; | |
42 | struct sst_acpi_mach *machines; | |
43 | /* Platform resource indexes. Must set to -1 if not used */ | |
44 | int resindex_lpe_base; | |
45 | int resindex_pcicfg_base; | |
46 | int resindex_fw_base; | |
47 | int irqindex_host_ipc; | |
48 | int resindex_dma_base; | |
49 | /* Unique number identifying the SST core on platform */ | |
50 | int sst_id; | |
51 | /* DMA only valid when resindex_dma_base != -1*/ | |
52 | int dma_engine; | |
53 | int dma_size; | |
54 | }; | |
55 | ||
56 | struct sst_acpi_priv { | |
57 | struct platform_device *pdev_mach; | |
58 | struct platform_device *pdev_pcm; | |
59 | struct sst_pdata sst_pdata; | |
60 | struct sst_acpi_desc *desc; | |
61 | struct sst_acpi_mach *mach; | |
62 | }; | |
63 | ||
64 | static void sst_acpi_fw_cb(const struct firmware *fw, void *context) | |
65 | { | |
66 | struct platform_device *pdev = context; | |
67 | struct device *dev = &pdev->dev; | |
68 | struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev); | |
69 | struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata; | |
70 | struct sst_acpi_desc *desc = sst_acpi->desc; | |
71 | struct sst_acpi_mach *mach = sst_acpi->mach; | |
72 | ||
73 | sst_pdata->fw = fw; | |
74 | if (!fw) { | |
75 | dev_err(dev, "Cannot load firmware %s\n", mach->fw_filename); | |
76 | return; | |
77 | } | |
78 | ||
79 | /* register PCM and DAI driver */ | |
80 | sst_acpi->pdev_pcm = | |
81 | platform_device_register_data(dev, desc->drv_name, -1, | |
82 | sst_pdata, sizeof(*sst_pdata)); | |
83 | if (IS_ERR(sst_acpi->pdev_pcm)) { | |
84 | dev_err(dev, "Cannot register device %s. Error %d\n", | |
85 | desc->drv_name, (int)PTR_ERR(sst_acpi->pdev_pcm)); | |
86 | } | |
87 | ||
88 | return; | |
89 | } | |
90 | ||
91 | static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level, | |
92 | void *context, void **ret) | |
93 | { | |
94 | *(bool *)context = true; | |
95 | return AE_OK; | |
96 | } | |
97 | ||
98 | static struct sst_acpi_mach *sst_acpi_find_machine( | |
99 | struct sst_acpi_mach *machines) | |
100 | { | |
101 | struct sst_acpi_mach *mach; | |
102 | bool found = false; | |
103 | ||
104 | for (mach = machines; mach->id[0]; mach++) | |
105 | if (ACPI_SUCCESS(acpi_get_devices(mach->id, | |
106 | sst_acpi_mach_match, | |
107 | &found, NULL)) && found) | |
108 | return mach; | |
109 | ||
110 | return NULL; | |
111 | } | |
112 | ||
113 | static int sst_acpi_probe(struct platform_device *pdev) | |
114 | { | |
115 | const struct acpi_device_id *id; | |
116 | struct device *dev = &pdev->dev; | |
117 | struct sst_acpi_priv *sst_acpi; | |
118 | struct sst_pdata *sst_pdata; | |
119 | struct sst_acpi_mach *mach; | |
120 | struct sst_acpi_desc *desc; | |
121 | struct resource *mmio; | |
122 | int ret = 0; | |
123 | ||
124 | sst_acpi = devm_kzalloc(dev, sizeof(*sst_acpi), GFP_KERNEL); | |
125 | if (sst_acpi == NULL) | |
126 | return -ENOMEM; | |
127 | ||
128 | id = acpi_match_device(dev->driver->acpi_match_table, dev); | |
129 | if (!id) | |
130 | return -ENODEV; | |
131 | ||
132 | desc = (struct sst_acpi_desc *)id->driver_data; | |
133 | mach = sst_acpi_find_machine(desc->machines); | |
134 | if (mach == NULL) { | |
135 | dev_err(dev, "No matching ASoC machine driver found\n"); | |
136 | return -ENODEV; | |
137 | } | |
138 | ||
139 | sst_pdata = &sst_acpi->sst_pdata; | |
140 | sst_pdata->id = desc->sst_id; | |
10df3509 | 141 | sst_pdata->dma_dev = dev; |
a4b12990 MB |
142 | sst_acpi->desc = desc; |
143 | sst_acpi->mach = mach; | |
144 | ||
6212755e | 145 | sst_pdata->resindex_dma_base = desc->resindex_dma_base; |
a4b12990 MB |
146 | if (desc->resindex_dma_base >= 0) { |
147 | sst_pdata->dma_engine = desc->dma_engine; | |
148 | sst_pdata->dma_base = desc->resindex_dma_base; | |
149 | sst_pdata->dma_size = desc->dma_size; | |
150 | } | |
151 | ||
152 | if (desc->irqindex_host_ipc >= 0) | |
153 | sst_pdata->irq = platform_get_irq(pdev, desc->irqindex_host_ipc); | |
154 | ||
155 | if (desc->resindex_lpe_base >= 0) { | |
156 | mmio = platform_get_resource(pdev, IORESOURCE_MEM, | |
157 | desc->resindex_lpe_base); | |
158 | if (mmio) { | |
159 | sst_pdata->lpe_base = mmio->start; | |
160 | sst_pdata->lpe_size = resource_size(mmio); | |
161 | } | |
162 | } | |
163 | ||
164 | if (desc->resindex_pcicfg_base >= 0) { | |
165 | mmio = platform_get_resource(pdev, IORESOURCE_MEM, | |
166 | desc->resindex_pcicfg_base); | |
167 | if (mmio) { | |
168 | sst_pdata->pcicfg_base = mmio->start; | |
169 | sst_pdata->pcicfg_size = resource_size(mmio); | |
170 | } | |
171 | } | |
172 | ||
173 | if (desc->resindex_fw_base >= 0) { | |
174 | mmio = platform_get_resource(pdev, IORESOURCE_MEM, | |
175 | desc->resindex_fw_base); | |
176 | if (mmio) { | |
177 | sst_pdata->fw_base = mmio->start; | |
178 | sst_pdata->fw_size = resource_size(mmio); | |
179 | } | |
180 | } | |
181 | ||
182 | platform_set_drvdata(pdev, sst_acpi); | |
183 | ||
184 | /* register machine driver */ | |
185 | sst_acpi->pdev_mach = | |
186 | platform_device_register_data(dev, mach->drv_name, -1, | |
187 | sst_pdata, sizeof(*sst_pdata)); | |
188 | if (IS_ERR(sst_acpi->pdev_mach)) | |
189 | return PTR_ERR(sst_acpi->pdev_mach); | |
190 | ||
191 | /* continue SST probing after firmware is loaded */ | |
192 | ret = request_firmware_nowait(THIS_MODULE, true, mach->fw_filename, | |
193 | dev, GFP_KERNEL, pdev, sst_acpi_fw_cb); | |
194 | if (ret) | |
195 | platform_device_unregister(sst_acpi->pdev_mach); | |
196 | ||
197 | return ret; | |
198 | } | |
199 | ||
200 | static int sst_acpi_remove(struct platform_device *pdev) | |
201 | { | |
202 | struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev); | |
203 | struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata; | |
204 | ||
205 | platform_device_unregister(sst_acpi->pdev_mach); | |
206 | if (!IS_ERR_OR_NULL(sst_acpi->pdev_pcm)) | |
207 | platform_device_unregister(sst_acpi->pdev_pcm); | |
208 | release_firmware(sst_pdata->fw); | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static struct sst_acpi_mach haswell_machines[] = { | |
214 | { "INT33CA", "haswell-audio", "intel/IntcSST1.bin" }, | |
215 | {} | |
216 | }; | |
217 | ||
218 | static struct sst_acpi_desc sst_acpi_haswell_desc = { | |
219 | .drv_name = "haswell-pcm-audio", | |
220 | .machines = haswell_machines, | |
221 | .resindex_lpe_base = 0, | |
222 | .resindex_pcicfg_base = 1, | |
223 | .resindex_fw_base = -1, | |
224 | .irqindex_host_ipc = 0, | |
225 | .sst_id = SST_DEV_ID_LYNX_POINT, | |
226 | .dma_engine = SST_DMA_TYPE_DW, | |
227 | .resindex_dma_base = SST_LPT_DSP_DMA_ADDR_OFFSET, | |
228 | .dma_size = SST_LPT_DSP_DMA_SIZE, | |
229 | }; | |
230 | ||
231 | static struct sst_acpi_mach broadwell_machines[] = { | |
232 | { "INT343A", "broadwell-audio", "intel/IntcSST2.bin" }, | |
233 | {} | |
234 | }; | |
235 | ||
236 | static struct sst_acpi_desc sst_acpi_broadwell_desc = { | |
237 | .drv_name = "haswell-pcm-audio", | |
238 | .machines = broadwell_machines, | |
239 | .resindex_lpe_base = 0, | |
240 | .resindex_pcicfg_base = 1, | |
241 | .resindex_fw_base = -1, | |
242 | .irqindex_host_ipc = 0, | |
243 | .sst_id = SST_DEV_ID_WILDCAT_POINT, | |
244 | .dma_engine = SST_DMA_TYPE_DW, | |
245 | .resindex_dma_base = SST_WPT_DSP_DMA_ADDR_OFFSET, | |
246 | .dma_size = SST_LPT_DSP_DMA_SIZE, | |
247 | }; | |
248 | ||
249 | static struct sst_acpi_mach baytrail_machines[] = { | |
9b11eb44 JN |
250 | { "10EC5640", "byt-rt5640", "intel/fw_sst_0f28.bin-48kHz_i2s_master" }, |
251 | { "193C9890", "byt-max98090", "intel/fw_sst_0f28.bin-48kHz_i2s_master" }, | |
a4b12990 MB |
252 | {} |
253 | }; | |
254 | ||
255 | static struct sst_acpi_desc sst_acpi_baytrail_desc = { | |
256 | .drv_name = "baytrail-pcm-audio", | |
257 | .machines = baytrail_machines, | |
258 | .resindex_lpe_base = 0, | |
259 | .resindex_pcicfg_base = 1, | |
260 | .resindex_fw_base = 2, | |
261 | .irqindex_host_ipc = 5, | |
262 | .sst_id = SST_DEV_ID_BYT, | |
263 | .resindex_dma_base = -1, | |
264 | }; | |
265 | ||
e85dae70 | 266 | static const struct acpi_device_id sst_acpi_match[] = { |
a4b12990 MB |
267 | { "INT33C8", (unsigned long)&sst_acpi_haswell_desc }, |
268 | { "INT3438", (unsigned long)&sst_acpi_broadwell_desc }, | |
269 | { "80860F28", (unsigned long)&sst_acpi_baytrail_desc }, | |
270 | { } | |
271 | }; | |
272 | MODULE_DEVICE_TABLE(acpi, sst_acpi_match); | |
273 | ||
274 | static struct platform_driver sst_acpi_driver = { | |
275 | .probe = sst_acpi_probe, | |
276 | .remove = sst_acpi_remove, | |
277 | .driver = { | |
278 | .name = "sst-acpi", | |
a4b12990 MB |
279 | .acpi_match_table = ACPI_PTR(sst_acpi_match), |
280 | }, | |
281 | }; | |
282 | module_platform_driver(sst_acpi_driver); | |
283 | ||
284 | MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@linux.intel.com>"); | |
285 | MODULE_DESCRIPTION("Intel SST loader on ACPI systems"); | |
286 | MODULE_LICENSE("GPL v2"); |