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Linux/sound/soc/intel/common/sst-acpi.c

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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 #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 /* Descriptor for setting up SST platform data */
 31 struct sst_acpi_desc {
 32         const char *drv_name;
 33         struct sst_acpi_mach *machines;
 34         /* Platform resource indexes. Must set to -1 if not used */
 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         /* Unique number identifying the SST core on platform */
 41         int sst_id;
 42         /* DMA only valid when resindex_dma_base != -1*/
 43         int dma_engine;
 44         int dma_size;
 45 };
 46 
 47 struct 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 
 55 static 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         /* register PCM and DAI driver */
 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 
 82 static 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         /* register machine driver */
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         /* continue SST probing after firmware is loaded */
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 
169 static 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 
182 static struct sst_acpi_mach haswell_machines[] = {
183         { "INT33CA", "haswell-audio", "intel/IntcSST1.bin", NULL, NULL, NULL },
184         {}
185 };
186 
187 static 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 
200 static 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 
206 static 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)
220 static 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 
226 static 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 
238 static 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 };
246 MODULE_DEVICE_TABLE(acpi, sst_acpi_match);
247 
248 static 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 };
256 module_platform_driver(sst_acpi_driver);
257 
258 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@linux.intel.com>");
259 MODULE_DESCRIPTION("Intel SST loader on ACPI systems");
260 MODULE_LICENSE("GPL v2");
261 

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