/* * Intel SST loader on ACPI systems * * Copyright (C) 2013, Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include #include #include #include #include #include "sst-dsp.h" #define SST_LPT_DSP_DMA_ADDR_OFFSET 0x0F0000 #define SST_WPT_DSP_DMA_ADDR_OFFSET 0x0FE000 #define SST_LPT_DSP_DMA_SIZE (1024 - 1) /* Descriptor for SST ASoC machine driver */ struct sst_acpi_mach { /* ACPI ID for the matching machine driver. Audio codec for instance */ const u8 id[ACPI_ID_LEN]; /* machine driver name */ const char *drv_name; /* firmware file name */ const char *fw_filename; }; /* Descriptor for setting up SST platform data */ struct sst_acpi_desc { const char *drv_name; struct sst_acpi_mach *machines; /* Platform resource indexes. Must set to -1 if not used */ int resindex_lpe_base; int resindex_pcicfg_base; int resindex_fw_base; int irqindex_host_ipc; int resindex_dma_base; /* Unique number identifying the SST core on platform */ int sst_id; /* DMA only valid when resindex_dma_base != -1*/ int dma_engine; int dma_size; }; struct sst_acpi_priv { struct platform_device *pdev_mach; struct platform_device *pdev_pcm; struct sst_pdata sst_pdata; struct sst_acpi_desc *desc; struct sst_acpi_mach *mach; }; static void sst_acpi_fw_cb(const struct firmware *fw, void *context) { struct platform_device *pdev = context; struct device *dev = &pdev->dev; struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev); struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata; struct sst_acpi_desc *desc = sst_acpi->desc; struct sst_acpi_mach *mach = sst_acpi->mach; sst_pdata->fw = fw; if (!fw) { dev_err(dev, "Cannot load firmware %s\n", mach->fw_filename); return; } /* register PCM and DAI driver */ sst_acpi->pdev_pcm = platform_device_register_data(dev, desc->drv_name, -1, sst_pdata, sizeof(*sst_pdata)); if (IS_ERR(sst_acpi->pdev_pcm)) { dev_err(dev, "Cannot register device %s. Error %d\n", desc->drv_name, (int)PTR_ERR(sst_acpi->pdev_pcm)); } return; } static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level, void *context, void **ret) { *(bool *)context = true; return AE_OK; } static struct sst_acpi_mach *sst_acpi_find_machine( struct sst_acpi_mach *machines) { struct sst_acpi_mach *mach; bool found = false; for (mach = machines; mach->id[0]; mach++) if (ACPI_SUCCESS(acpi_get_devices(mach->id, sst_acpi_mach_match, &found, NULL)) && found) return mach; return NULL; } static int sst_acpi_probe(struct platform_device *pdev) { const struct acpi_device_id *id; struct device *dev = &pdev->dev; struct sst_acpi_priv *sst_acpi; struct sst_pdata *sst_pdata; struct sst_acpi_mach *mach; struct sst_acpi_desc *desc; struct resource *mmio; int ret = 0; sst_acpi = devm_kzalloc(dev, sizeof(*sst_acpi), GFP_KERNEL); if (sst_acpi == NULL) return -ENOMEM; id = acpi_match_device(dev->driver->acpi_match_table, dev); if (!id) return -ENODEV; desc = (struct sst_acpi_desc *)id->driver_data; mach = sst_acpi_find_machine(desc->machines); if (mach == NULL) { dev_err(dev, "No matching ASoC machine driver found\n"); return -ENODEV; } sst_pdata = &sst_acpi->sst_pdata; sst_pdata->id = desc->sst_id; sst_pdata->dma_dev = dev; sst_acpi->desc = desc; sst_acpi->mach = mach; if (desc->resindex_dma_base >= 0) { sst_pdata->dma_engine = desc->dma_engine; sst_pdata->dma_base = desc->resindex_dma_base; sst_pdata->dma_size = desc->dma_size; } if (desc->irqindex_host_ipc >= 0) sst_pdata->irq = platform_get_irq(pdev, desc->irqindex_host_ipc); if (desc->resindex_lpe_base >= 0) { mmio = platform_get_resource(pdev, IORESOURCE_MEM, desc->resindex_lpe_base); if (mmio) { sst_pdata->lpe_base = mmio->start; sst_pdata->lpe_size = resource_size(mmio); } } if (desc->resindex_pcicfg_base >= 0) { mmio = platform_get_resource(pdev, IORESOURCE_MEM, desc->resindex_pcicfg_base); if (mmio) { sst_pdata->pcicfg_base = mmio->start; sst_pdata->pcicfg_size = resource_size(mmio); } } if (desc->resindex_fw_base >= 0) { mmio = platform_get_resource(pdev, IORESOURCE_MEM, desc->resindex_fw_base); if (mmio) { sst_pdata->fw_base = mmio->start; sst_pdata->fw_size = resource_size(mmio); } } platform_set_drvdata(pdev, sst_acpi); /* register machine driver */ sst_acpi->pdev_mach = platform_device_register_data(dev, mach->drv_name, -1, sst_pdata, sizeof(*sst_pdata)); if (IS_ERR(sst_acpi->pdev_mach)) return PTR_ERR(sst_acpi->pdev_mach); /* continue SST probing after firmware is loaded */ ret = request_firmware_nowait(THIS_MODULE, true, mach->fw_filename, dev, GFP_KERNEL, pdev, sst_acpi_fw_cb); if (ret) platform_device_unregister(sst_acpi->pdev_mach); return ret; } static int sst_acpi_remove(struct platform_device *pdev) { struct sst_acpi_priv *sst_acpi = platform_get_drvdata(pdev); struct sst_pdata *sst_pdata = &sst_acpi->sst_pdata; platform_device_unregister(sst_acpi->pdev_mach); if (!IS_ERR_OR_NULL(sst_acpi->pdev_pcm)) platform_device_unregister(sst_acpi->pdev_pcm); release_firmware(sst_pdata->fw); return 0; } static struct sst_acpi_mach haswell_machines[] = { { "INT33CA", "haswell-audio", "intel/IntcSST1.bin" }, {} }; static struct sst_acpi_desc sst_acpi_haswell_desc = { .drv_name = "haswell-pcm-audio", .machines = haswell_machines, .resindex_lpe_base = 0, .resindex_pcicfg_base = 1, .resindex_fw_base = -1, .irqindex_host_ipc = 0, .sst_id = SST_DEV_ID_LYNX_POINT, .dma_engine = SST_DMA_TYPE_DW, .resindex_dma_base = SST_LPT_DSP_DMA_ADDR_OFFSET, .dma_size = SST_LPT_DSP_DMA_SIZE, }; static struct sst_acpi_mach broadwell_machines[] = { { "INT343A", "broadwell-audio", "intel/IntcSST2.bin" }, {} }; static struct sst_acpi_desc sst_acpi_broadwell_desc = { .drv_name = "haswell-pcm-audio", .machines = broadwell_machines, .resindex_lpe_base = 0, .resindex_pcicfg_base = 1, .resindex_fw_base = -1, .irqindex_host_ipc = 0, .sst_id = SST_DEV_ID_WILDCAT_POINT, .dma_engine = SST_DMA_TYPE_DW, .resindex_dma_base = SST_WPT_DSP_DMA_ADDR_OFFSET, .dma_size = SST_LPT_DSP_DMA_SIZE, }; static struct sst_acpi_mach baytrail_machines[] = { { "10EC5640", "byt-rt5640", "intel/fw_sst_0f28.bin-48kHz_i2s_master" }, { "193C9890", "byt-max98090", "intel/fw_sst_0f28.bin-48kHz_i2s_master" }, {} }; static struct sst_acpi_desc sst_acpi_baytrail_desc = { .drv_name = "baytrail-pcm-audio", .machines = baytrail_machines, .resindex_lpe_base = 0, .resindex_pcicfg_base = 1, .resindex_fw_base = 2, .irqindex_host_ipc = 5, .sst_id = SST_DEV_ID_BYT, .resindex_dma_base = -1, }; static struct acpi_device_id sst_acpi_match[] = { { "INT33C8", (unsigned long)&sst_acpi_haswell_desc }, { "INT3438", (unsigned long)&sst_acpi_broadwell_desc }, { "80860F28", (unsigned long)&sst_acpi_baytrail_desc }, { } }; MODULE_DEVICE_TABLE(acpi, sst_acpi_match); static struct platform_driver sst_acpi_driver = { .probe = sst_acpi_probe, .remove = sst_acpi_remove, .driver = { .name = "sst-acpi", .owner = THIS_MODULE, .acpi_match_table = ACPI_PTR(sst_acpi_match), }, }; module_platform_driver(sst_acpi_driver); MODULE_AUTHOR("Jarkko Nikula "); MODULE_DESCRIPTION("Intel SST loader on ACPI systems"); MODULE_LICENSE("GPL v2");