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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Intel SST loader on ACPI systems
   4  *
   5  * Copyright (C) 2013, Intel Corporation. All rights reserved.
   6  */
   7
   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 /* Descriptor for setting up SST platform data */
  23 struct sst_acpi_desc {
  24         const char *drv_name;
  25         struct snd_soc_acpi_mach *machines;
  26         /* Platform resource indexes. Must set to -1 if not used */
  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         /* Unique number identifying the SST core on platform */
  33         int sst_id;
  34         /* DMA only valid when resindex_dma_base != -1*/
  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         /* register PCM and DAI driver */
  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         /* register machine driver */
 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         /* continue SST probing after firmware is loaded */
 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");