1
2
3
4
5
6
7
8
9
10
11
12
13
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#include "sst-acpi.h"
25
26#define SST_LPT_DSP_DMA_ADDR_OFFSET 0x0F0000
27#define SST_WPT_DSP_DMA_ADDR_OFFSET 0x0FE000
28#define SST_LPT_DSP_DMA_SIZE (1024 - 1)
29
30
31struct sst_acpi_desc {
32 const char *drv_name;
33 struct sst_acpi_mach *machines;
34
35 int resindex_lpe_base;
36 int resindex_pcicfg_base;
37 int resindex_fw_base;
38 int irqindex_host_ipc;
39 int resindex_dma_base;
40
41 int sst_id;
42
43 int dma_engine;
44 int dma_size;
45};
46
47struct sst_acpi_priv {
48 struct platform_device *pdev_mach;
49 struct platform_device *pdev_pcm;
50 struct sst_pdata sst_pdata;
51 struct sst_acpi_desc *desc;
52 struct sst_acpi_mach *mach;
53};
54
55static void sst_acpi_fw_cb(const struct firmware *fw, void *context)
56{
57 struct platform_device *pdev = context;
58 struct device *dev = &pdev->dev;
59 struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev);
60 struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata;
61 struct sst_acpi_desc *desc = sst_acpi->desc;
62 struct sst_acpi_mach *mach = sst_acpi->mach;
63
64 sst_pdata->fw = fw;
65 if (!fw) {
66 dev_err(dev, "Cannot load firmware %s\n", mach->fw_filename);
67 return;
68 }
69
70
71 sst_acpi->pdev_pcm =
72 platform_device_register_data(dev, desc->drv_name, -1,
73 sst_pdata, sizeof(*sst_pdata));
74 if (IS_ERR(sst_acpi->pdev_pcm)) {
75 dev_err(dev, "Cannot register device %s. Error %d\n",
76 desc->drv_name, (int)PTR_ERR(sst_acpi->pdev_pcm));
77 }
78
79 return;
80}
81
82static int sst_acpi_probe(struct platform_device *pdev)
83{
84 const struct acpi_device_id *id;
85 struct device *dev = &pdev->dev;
86 struct sst_acpi_priv *sst_acpi;
87 struct sst_pdata *sst_pdata;
88 struct sst_acpi_mach *mach;
89 struct sst_acpi_desc *desc;
90 struct resource *mmio;
91 int ret = 0;
92
93 sst_acpi = devm_kzalloc(dev, sizeof(*sst_acpi), GFP_KERNEL);
94 if (sst_acpi == NULL)
95 return -ENOMEM;
96
97 id = acpi_match_device(dev->driver->acpi_match_table, dev);
98 if (!id)
99 return -ENODEV;
100
101 desc = (struct sst_acpi_desc *)id->driver_data;
102 mach = sst_acpi_find_machine(desc->machines);
103 if (mach == NULL) {
104 dev_err(dev, "No matching ASoC machine driver found\n");
105 return -ENODEV;
106 }
107
108 sst_pdata = &sst_acpi->sst_pdata;
109 sst_pdata->id = desc->sst_id;
110 sst_pdata->dma_dev = dev;
111 sst_acpi->desc = desc;
112 sst_acpi->mach = mach;
113
114 sst_pdata->resindex_dma_base = desc->resindex_dma_base;
115 if (desc->resindex_dma_base >= 0) {
116 sst_pdata->dma_engine = desc->dma_engine;
117 sst_pdata->dma_base = desc->resindex_dma_base;
118 sst_pdata->dma_size = desc->dma_size;
119 }
120
121 if (desc->irqindex_host_ipc >= 0)
122 sst_pdata->irq = platform_get_irq(pdev, desc->irqindex_host_ipc);
123
124 if (desc->resindex_lpe_base >= 0) {
125 mmio = platform_get_resource(pdev, IORESOURCE_MEM,
126 desc->resindex_lpe_base);
127 if (mmio) {
128 sst_pdata->lpe_base = mmio->start;
129 sst_pdata->lpe_size = resource_size(mmio);
130 }
131 }
132
133 if (desc->resindex_pcicfg_base >= 0) {
134 mmio = platform_get_resource(pdev, IORESOURCE_MEM,
135 desc->resindex_pcicfg_base);
136 if (mmio) {
137 sst_pdata->pcicfg_base = mmio->start;
138 sst_pdata->pcicfg_size = resource_size(mmio);
139 }
140 }
141
142 if (desc->resindex_fw_base >= 0) {
143 mmio = platform_get_resource(pdev, IORESOURCE_MEM,
144 desc->resindex_fw_base);
145 if (mmio) {
146 sst_pdata->fw_base = mmio->start;
147 sst_pdata->fw_size = resource_size(mmio);
148 }
149 }
150
151 platform_set_drvdata(pdev, sst_acpi);
152
153
154 sst_acpi->pdev_mach =
155 platform_device_register_data(dev, mach->drv_name, -1,
156 sst_pdata, sizeof(*sst_pdata));
157 if (IS_ERR(sst_acpi->pdev_mach))
158 return PTR_ERR(sst_acpi->pdev_mach);
159
160
161 ret = request_firmware_nowait(THIS_MODULE, true, mach->fw_filename,
162 dev, GFP_KERNEL, pdev, sst_acpi_fw_cb);
163 if (ret)
164 platform_device_unregister(sst_acpi->pdev_mach);
165
166 return ret;
167}
168
169static int sst_acpi_remove(struct platform_device *pdev)
170{
171 struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev);
172 struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata;
173
174 platform_device_unregister(sst_acpi->pdev_mach);
175 if (!IS_ERR_OR_NULL(sst_acpi->pdev_pcm))
176 platform_device_unregister(sst_acpi->pdev_pcm);
177 release_firmware(sst_pdata->fw);
178
179 return 0;
180}
181
182static struct sst_acpi_mach haswell_machines[] = {
183 { "INT33CA", "haswell-audio", "intel/IntcSST1.bin", NULL, NULL, NULL },
184 {}
185};
186
187static struct sst_acpi_desc sst_acpi_haswell_desc = {
188 .drv_name = "haswell-pcm-audio",
189 .machines = haswell_machines,
190 .resindex_lpe_base = 0,
191 .resindex_pcicfg_base = 1,
192 .resindex_fw_base = -1,
193 .irqindex_host_ipc = 0,
194 .sst_id = SST_DEV_ID_LYNX_POINT,
195 .dma_engine = SST_DMA_TYPE_DW,
196 .resindex_dma_base = SST_LPT_DSP_DMA_ADDR_OFFSET,
197 .dma_size = SST_LPT_DSP_DMA_SIZE,
198};
199
200static struct sst_acpi_mach broadwell_machines[] = {
201 { "INT343A", "broadwell-audio", "intel/IntcSST2.bin", NULL, NULL, NULL },
202 { "RT5677CE", "bdw-rt5677", "intel/IntcSST2.bin", NULL, NULL, NULL },
203 {}
204};
205
206static struct sst_acpi_desc sst_acpi_broadwell_desc = {
207 .drv_name = "haswell-pcm-audio",
208 .machines = broadwell_machines,
209 .resindex_lpe_base = 0,
210 .resindex_pcicfg_base = 1,
211 .resindex_fw_base = -1,
212 .irqindex_host_ipc = 0,
213 .sst_id = SST_DEV_ID_WILDCAT_POINT,
214 .dma_engine = SST_DMA_TYPE_DW,
215 .resindex_dma_base = SST_WPT_DSP_DMA_ADDR_OFFSET,
216 .dma_size = SST_LPT_DSP_DMA_SIZE,
217};
218
219#if !IS_ENABLED(CONFIG_SND_SST_IPC_ACPI)
220static struct sst_acpi_mach baytrail_machines[] = {
221 { "10EC5640", "byt-rt5640", "intel/fw_sst_0f28.bin-48kHz_i2s_master", NULL, NULL, NULL },
222 { "193C9890", "byt-max98090", "intel/fw_sst_0f28.bin-48kHz_i2s_master", NULL, NULL, NULL },
223 {}
224};
225
226static struct sst_acpi_desc sst_acpi_baytrail_desc = {
227 .drv_name = "baytrail-pcm-audio",
228 .machines = baytrail_machines,
229 .resindex_lpe_base = 0,
230 .resindex_pcicfg_base = 1,
231 .resindex_fw_base = 2,
232 .irqindex_host_ipc = 5,
233 .sst_id = SST_DEV_ID_BYT,
234 .resindex_dma_base = -1,
235};
236#endif
237
238static const struct acpi_device_id sst_acpi_match[] = {
239 { "INT33C8", (unsigned long)&sst_acpi_haswell_desc },
240 { "INT3438", (unsigned long)&sst_acpi_broadwell_desc },
241#if !IS_ENABLED(CONFIG_SND_SST_IPC_ACPI)
242 { "80860F28", (unsigned long)&sst_acpi_baytrail_desc },
243#endif
244 { }
245};
246MODULE_DEVICE_TABLE(acpi, sst_acpi_match);
247
248static struct platform_driver sst_acpi_driver = {
249 .probe = sst_acpi_probe,
250 .remove = sst_acpi_remove,
251 .driver = {
252 .name = "sst-acpi",
253 .acpi_match_table = ACPI_PTR(sst_acpi_match),
254 },
255};
256module_platform_driver(sst_acpi_driver);
257
258MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@linux.intel.com>");
259MODULE_DESCRIPTION("Intel SST loader on ACPI systems");
260MODULE_LICENSE("GPL v2");
261
