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// SPDX-License-Identifier: GPL-2.0-only
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* sst_pci.c - SST (LPE) driver init file for pci enumeration.
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* Copyright (C) 2008-14 Intel Corp
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* Authors: Vinod Koul <vinod.koul@intel.com>
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* Harsha Priya <priya.harsha@intel.com>
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* Dharageswari R <dharageswari.r@intel.com>
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* KP Jeeja <jeeja.kp@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/firmware.h>
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#include <linux/pm_runtime.h>
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#include <sound/core.h>
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#include <sound/soc.h>
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#include <asm/platform_sst_audio.h>
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#include "../sst-mfld-platform.h"
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static int sst_platform_get_resources(struct intel_sst_drv *ctx)
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int ddr_base, ret = 0;
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struct pci_dev *pci = ctx->pci;
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ret = pci_request_regions(pci, SST_DRV_NAME);
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if (ctx->dev_id == SST_MRFLD_PCI_ID) {
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ctx->ddr_base = pci_resource_start(pci, 0);
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/* check that the relocated IMR base matches with FW Binary */
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ddr_base = relocate_imr_addr_mrfld(ctx->ddr_base);
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if (!ctx->pdata->lib_info) {
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dev_err(ctx->dev, "lib_info pointer NULL\n");
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goto do_release_regions;
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if (ddr_base != ctx->pdata->lib_info->mod_base) {
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"FW LSP DDR BASE does not match with IFWI\n");
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goto do_release_regions;
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ctx->ddr_end = pci_resource_end(pci, 0);
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ctx->ddr = pcim_iomap(pci, 0,
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pci_resource_len(pci, 0));
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goto do_release_regions;
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dev_dbg(ctx->dev, "sst: DDR Ptr %p\n", ctx->ddr);
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ctx->shim_phy_add = pci_resource_start(pci, 1);
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ctx->shim = pcim_iomap(pci, 1, pci_resource_len(pci, 1));
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goto do_release_regions;
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dev_dbg(ctx->dev, "SST Shim Ptr %p\n", ctx->shim);
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ctx->mailbox_add = pci_resource_start(pci, 2);
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ctx->mailbox = pcim_iomap(pci, 2, pci_resource_len(pci, 2));
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goto do_release_regions;
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dev_dbg(ctx->dev, "SRAM Ptr %p\n", ctx->mailbox);
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ctx->iram_end = pci_resource_end(pci, 3);
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ctx->iram_base = pci_resource_start(pci, 3);
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ctx->iram = pcim_iomap(pci, 3, pci_resource_len(pci, 3));
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goto do_release_regions;
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dev_dbg(ctx->dev, "IRAM Ptr %p\n", ctx->iram);
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ctx->dram_end = pci_resource_end(pci, 4);
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ctx->dram_base = pci_resource_start(pci, 4);
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ctx->dram = pcim_iomap(pci, 4, pci_resource_len(pci, 4));
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goto do_release_regions;
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dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);
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pci_release_regions(pci);
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* intel_sst_probe - PCI probe function
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* @pci: PCI device structure
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* @pci_id: PCI device ID structure
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static int intel_sst_probe(struct pci_dev *pci,
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const struct pci_device_id *pci_id)
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struct intel_sst_drv *sst_drv_ctx;
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struct sst_platform_info *sst_pdata = pci->dev.platform_data;
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dev_dbg(&pci->dev, "Probe for DID %x\n", pci->device);
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ret = sst_alloc_drv_context(&sst_drv_ctx, &pci->dev, pci->device);
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sst_drv_ctx->pdata = sst_pdata;
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sst_drv_ctx->irq_num = pci->irq;
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snprintf(sst_drv_ctx->firmware_name, sizeof(sst_drv_ctx->firmware_name),
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"%s%04x%s", "fw_sst_",
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sst_drv_ctx->dev_id, ".bin");
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ret = sst_context_init(sst_drv_ctx);
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/* Init the device */
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ret = pcim_enable_device(pci);
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dev_err(sst_drv_ctx->dev,
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"device can't be enabled. Returned err: %d\n", ret);
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goto do_free_drv_ctx;
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sst_drv_ctx->pci = pci_dev_get(pci);
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ret = sst_platform_get_resources(sst_drv_ctx);
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goto do_free_drv_ctx;
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pci_set_drvdata(pci, sst_drv_ctx);
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sst_configure_runtime_pm(sst_drv_ctx);
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sst_context_cleanup(sst_drv_ctx);
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dev_err(sst_drv_ctx->dev, "Probe failed with %d\n", ret);
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* intel_sst_remove - PCI remove function
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* @pci: PCI device structure
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* This function is called by OS when a device is unloaded
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* This frees the interrupt etc
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static void intel_sst_remove(struct pci_dev *pci)
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struct intel_sst_drv *sst_drv_ctx = pci_get_drvdata(pci);
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sst_context_cleanup(sst_drv_ctx);
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pci_dev_put(sst_drv_ctx->pci);
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pci_release_regions(pci);
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pci_set_drvdata(pci, NULL);
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static const struct pci_device_id intel_sst_ids[] = {
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{ PCI_VDEVICE(INTEL, SST_MRFLD_PCI_ID), 0},
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static struct pci_driver sst_driver = {
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.name = SST_DRV_NAME,
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.id_table = intel_sst_ids,
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.probe = intel_sst_probe,
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.remove = intel_sst_remove,
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module_pci_driver(sst_driver);
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MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine PCI Driver");
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MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
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MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
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MODULE_AUTHOR("Dharageswari R <dharageswari.r@intel.com>");
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MODULE_AUTHOR("KP Jeeja <jeeja.kp@intel.com>");
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MODULE_LICENSE("GPL v2");