This source file includes following definitions.
- sst_acpi_fw_cb
- sst_acpi_probe
- sst_acpi_remove
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8 #include <linux/acpi.h>
9 #include <linux/device.h>
10 #include <linux/firmware.h>
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13
14 #include "sst-dsp.h"
15 #include <sound/soc-acpi.h>
16 #include <sound/soc-acpi-intel-match.h>
17
18 #define SST_LPT_DSP_DMA_ADDR_OFFSET 0x0F0000
19 #define SST_WPT_DSP_DMA_ADDR_OFFSET 0x0FE000
20 #define SST_LPT_DSP_DMA_SIZE (1024 - 1)
21
22
23 struct sst_acpi_desc {
24 const char *drv_name;
25 struct snd_soc_acpi_mach *machines;
26
27 int resindex_lpe_base;
28 int resindex_pcicfg_base;
29 int resindex_fw_base;
30 int irqindex_host_ipc;
31 int resindex_dma_base;
32
33 int sst_id;
34
35 int dma_engine;
36 int dma_size;
37 };
38
39 struct sst_acpi_priv {
40 struct platform_device *pdev_mach;
41 struct platform_device *pdev_pcm;
42 struct sst_pdata sst_pdata;
43 struct sst_acpi_desc *desc;
44 struct snd_soc_acpi_mach *mach;
45 };
46
47 static void sst_acpi_fw_cb(const struct firmware *fw, void *context)
48 {
49 struct platform_device *pdev = context;
50 struct device *dev = &pdev->dev;
51 struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev);
52 struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata;
53 struct sst_acpi_desc *desc = sst_acpi->desc;
54 struct snd_soc_acpi_mach *mach = sst_acpi->mach;
55
56 sst_pdata->fw = fw;
57 if (!fw) {
58 dev_err(dev, "Cannot load firmware %s\n", mach->fw_filename);
59 return;
60 }
61
62
63 sst_acpi->pdev_pcm =
64 platform_device_register_data(dev, desc->drv_name, -1,
65 sst_pdata, sizeof(*sst_pdata));
66 if (IS_ERR(sst_acpi->pdev_pcm)) {
67 dev_err(dev, "Cannot register device %s. Error %d\n",
68 desc->drv_name, (int)PTR_ERR(sst_acpi->pdev_pcm));
69 }
70
71 return;
72 }
73
74 static int sst_acpi_probe(struct platform_device *pdev)
75 {
76 const struct acpi_device_id *id;
77 struct device *dev = &pdev->dev;
78 struct sst_acpi_priv *sst_acpi;
79 struct sst_pdata *sst_pdata;
80 struct snd_soc_acpi_mach *mach;
81 struct sst_acpi_desc *desc;
82 struct resource *mmio;
83 int ret = 0;
84
85 sst_acpi = devm_kzalloc(dev, sizeof(*sst_acpi), GFP_KERNEL);
86 if (sst_acpi == NULL)
87 return -ENOMEM;
88
89 id = acpi_match_device(dev->driver->acpi_match_table, dev);
90 if (!id)
91 return -ENODEV;
92
93 desc = (struct sst_acpi_desc *)id->driver_data;
94 mach = snd_soc_acpi_find_machine(desc->machines);
95 if (mach == NULL) {
96 dev_err(dev, "No matching ASoC machine driver found\n");
97 return -ENODEV;
98 }
99
100 sst_pdata = &sst_acpi->sst_pdata;
101 sst_pdata->id = desc->sst_id;
102 sst_pdata->dma_dev = dev;
103 sst_acpi->desc = desc;
104 sst_acpi->mach = mach;
105
106 sst_pdata->resindex_dma_base = desc->resindex_dma_base;
107 if (desc->resindex_dma_base >= 0) {
108 sst_pdata->dma_engine = desc->dma_engine;
109 sst_pdata->dma_base = desc->resindex_dma_base;
110 sst_pdata->dma_size = desc->dma_size;
111 }
112
113 if (desc->irqindex_host_ipc >= 0)
114 sst_pdata->irq = platform_get_irq(pdev, desc->irqindex_host_ipc);
115
116 if (desc->resindex_lpe_base >= 0) {
117 mmio = platform_get_resource(pdev, IORESOURCE_MEM,
118 desc->resindex_lpe_base);
119 if (mmio) {
120 sst_pdata->lpe_base = mmio->start;
121 sst_pdata->lpe_size = resource_size(mmio);
122 }
123 }
124
125 if (desc->resindex_pcicfg_base >= 0) {
126 mmio = platform_get_resource(pdev, IORESOURCE_MEM,
127 desc->resindex_pcicfg_base);
128 if (mmio) {
129 sst_pdata->pcicfg_base = mmio->start;
130 sst_pdata->pcicfg_size = resource_size(mmio);
131 }
132 }
133
134 if (desc->resindex_fw_base >= 0) {
135 mmio = platform_get_resource(pdev, IORESOURCE_MEM,
136 desc->resindex_fw_base);
137 if (mmio) {
138 sst_pdata->fw_base = mmio->start;
139 sst_pdata->fw_size = resource_size(mmio);
140 }
141 }
142
143 platform_set_drvdata(pdev, sst_acpi);
144 mach->pdata = sst_pdata;
145
146
147 sst_acpi->pdev_mach =
148 platform_device_register_data(dev, mach->drv_name, -1,
149 mach, sizeof(*mach));
150 if (IS_ERR(sst_acpi->pdev_mach))
151 return PTR_ERR(sst_acpi->pdev_mach);
152
153
154 ret = request_firmware_nowait(THIS_MODULE, true, mach->fw_filename,
155 dev, GFP_KERNEL, pdev, sst_acpi_fw_cb);
156 if (ret)
157 platform_device_unregister(sst_acpi->pdev_mach);
158
159 return ret;
160 }
161
162 static int sst_acpi_remove(struct platform_device *pdev)
163 {
164 struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev);
165 struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata;
166
167 platform_device_unregister(sst_acpi->pdev_mach);
168 if (!IS_ERR_OR_NULL(sst_acpi->pdev_pcm))
169 platform_device_unregister(sst_acpi->pdev_pcm);
170 release_firmware(sst_pdata->fw);
171
172 return 0;
173 }
174
175 static struct sst_acpi_desc sst_acpi_haswell_desc = {
176 .drv_name = "haswell-pcm-audio",
177 .machines = snd_soc_acpi_intel_haswell_machines,
178 .resindex_lpe_base = 0,
179 .resindex_pcicfg_base = 1,
180 .resindex_fw_base = -1,
181 .irqindex_host_ipc = 0,
182 .sst_id = SST_DEV_ID_LYNX_POINT,
183 .dma_engine = SST_DMA_TYPE_DW,
184 .resindex_dma_base = SST_LPT_DSP_DMA_ADDR_OFFSET,
185 .dma_size = SST_LPT_DSP_DMA_SIZE,
186 };
187
188 static struct sst_acpi_desc sst_acpi_broadwell_desc = {
189 .drv_name = "haswell-pcm-audio",
190 .machines = snd_soc_acpi_intel_broadwell_machines,
191 .resindex_lpe_base = 0,
192 .resindex_pcicfg_base = 1,
193 .resindex_fw_base = -1,
194 .irqindex_host_ipc = 0,
195 .sst_id = SST_DEV_ID_WILDCAT_POINT,
196 .dma_engine = SST_DMA_TYPE_DW,
197 .resindex_dma_base = SST_WPT_DSP_DMA_ADDR_OFFSET,
198 .dma_size = SST_LPT_DSP_DMA_SIZE,
199 };
200
201 #if !IS_ENABLED(CONFIG_SND_SST_IPC_ACPI)
202 static struct sst_acpi_desc sst_acpi_baytrail_desc = {
203 .drv_name = "baytrail-pcm-audio",
204 .machines = snd_soc_acpi_intel_baytrail_legacy_machines,
205 .resindex_lpe_base = 0,
206 .resindex_pcicfg_base = 1,
207 .resindex_fw_base = 2,
208 .irqindex_host_ipc = 5,
209 .sst_id = SST_DEV_ID_BYT,
210 .resindex_dma_base = -1,
211 };
212 #endif
213
214 static const struct acpi_device_id sst_acpi_match[] = {
215 { "INT33C8", (unsigned long)&sst_acpi_haswell_desc },
216 { "INT3438", (unsigned long)&sst_acpi_broadwell_desc },
217 #if !IS_ENABLED(CONFIG_SND_SST_IPC_ACPI)
218 { "80860F28", (unsigned long)&sst_acpi_baytrail_desc },
219 #endif
220 { }
221 };
222 MODULE_DEVICE_TABLE(acpi, sst_acpi_match);
223
224 static struct platform_driver sst_acpi_driver = {
225 .probe = sst_acpi_probe,
226 .remove = sst_acpi_remove,
227 .driver = {
228 .name = "sst-acpi",
229 .acpi_match_table = ACPI_PTR(sst_acpi_match),
230 },
231 };
232 module_platform_driver(sst_acpi_driver);
233
234 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@linux.intel.com>");
235 MODULE_DESCRIPTION("Intel SST loader on ACPI systems");
236 MODULE_LICENSE("GPL v2");