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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * sst_pci.c - SST (LPE) driver init file for pci enumeration.4 *5 * Copyright (C) 2008-14 Intel Corp6 * Authors: Vinod Koul <vinod.koul@intel.com>7 * Harsha Priya <priya.harsha@intel.com>8 * Dharageswari R <dharageswari.r@intel.com>9 * KP Jeeja <jeeja.kp@intel.com>10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~11 *12 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~13 */14#include <linux/module.h>15#include <linux/pci.h>16#include <linux/fs.h>17#include <linux/firmware.h>18#include <sound/core.h>19#include <sound/soc.h>20#include <asm/platform_sst_audio.h>21#include "../sst-mfld-platform.h"22#include "sst.h"23 24static int sst_platform_get_resources(struct intel_sst_drv *ctx)25{26 int ddr_base, ret = 0;27 struct pci_dev *pci = ctx->pci;28 29 ret = pci_request_regions(pci, SST_DRV_NAME);30 if (ret)31 return ret;32 33 /* map registers */34 /* DDR base */35 if (ctx->dev_id == PCI_DEVICE_ID_INTEL_SST_TNG) {36 ctx->ddr_base = pci_resource_start(pci, 0);37 /* check that the relocated IMR base matches with FW Binary */38 ddr_base = relocate_imr_addr_mrfld(ctx->ddr_base);39 if (!ctx->pdata->lib_info) {40 dev_err(ctx->dev, "lib_info pointer NULL\n");41 ret = -EINVAL;42 goto do_release_regions;43 }44 if (ddr_base != ctx->pdata->lib_info->mod_base) {45 dev_err(ctx->dev,46 "FW LSP DDR BASE does not match with IFWI\n");47 ret = -EINVAL;48 goto do_release_regions;49 }50 ctx->ddr_end = pci_resource_end(pci, 0);51 52 ctx->ddr = pcim_iomap(pci, 0,53 pci_resource_len(pci, 0));54 if (!ctx->ddr) {55 ret = -EINVAL;56 goto do_release_regions;57 }58 dev_dbg(ctx->dev, "sst: DDR Ptr %p\n", ctx->ddr);59 } else {60 ctx->ddr = NULL;61 }62 /* SHIM */63 ctx->shim_phy_add = pci_resource_start(pci, 1);64 ctx->shim = pcim_iomap(pci, 1, pci_resource_len(pci, 1));65 if (!ctx->shim) {66 ret = -EINVAL;67 goto do_release_regions;68 }69 dev_dbg(ctx->dev, "SST Shim Ptr %p\n", ctx->shim);70 71 /* Shared SRAM */72 ctx->mailbox_add = pci_resource_start(pci, 2);73 ctx->mailbox = pcim_iomap(pci, 2, pci_resource_len(pci, 2));74 if (!ctx->mailbox) {75 ret = -EINVAL;76 goto do_release_regions;77 }78 dev_dbg(ctx->dev, "SRAM Ptr %p\n", ctx->mailbox);79 80 /* IRAM */81 ctx->iram_end = pci_resource_end(pci, 3);82 ctx->iram_base = pci_resource_start(pci, 3);83 ctx->iram = pcim_iomap(pci, 3, pci_resource_len(pci, 3));84 if (!ctx->iram) {85 ret = -EINVAL;86 goto do_release_regions;87 }88 dev_dbg(ctx->dev, "IRAM Ptr %p\n", ctx->iram);89 90 /* DRAM */91 ctx->dram_end = pci_resource_end(pci, 4);92 ctx->dram_base = pci_resource_start(pci, 4);93 ctx->dram = pcim_iomap(pci, 4, pci_resource_len(pci, 4));94 if (!ctx->dram) {95 ret = -EINVAL;96 goto do_release_regions;97 }98 dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);99do_release_regions:100 pci_release_regions(pci);101 return ret;102}103 104/*105 * intel_sst_probe - PCI probe function106 *107 * @pci: PCI device structure108 * @pci_id: PCI device ID structure109 *110 */111static int intel_sst_probe(struct pci_dev *pci,112 const struct pci_device_id *pci_id)113{114 int ret = 0;115 struct intel_sst_drv *sst_drv_ctx;116 struct sst_platform_info *sst_pdata = pci->dev.platform_data;117 118 dev_dbg(&pci->dev, "Probe for DID %x\n", pci->device);119 ret = sst_alloc_drv_context(&sst_drv_ctx, &pci->dev, pci->device);120 if (ret < 0)121 return ret;122 123 sst_drv_ctx->pdata = sst_pdata;124 sst_drv_ctx->irq_num = pci->irq;125 snprintf(sst_drv_ctx->firmware_name, sizeof(sst_drv_ctx->firmware_name),126 "%s%04x%s", "fw_sst_",127 sst_drv_ctx->dev_id, ".bin");128 129 ret = sst_context_init(sst_drv_ctx);130 if (ret < 0)131 return ret;132 133 /* Init the device */134 ret = pcim_enable_device(pci);135 if (ret) {136 dev_err(sst_drv_ctx->dev,137 "device can't be enabled. Returned err: %d\n", ret);138 goto do_free_drv_ctx;139 }140 sst_drv_ctx->pci = pci_dev_get(pci);141 ret = sst_platform_get_resources(sst_drv_ctx);142 if (ret < 0)143 goto do_free_drv_ctx;144 145 pci_set_drvdata(pci, sst_drv_ctx);146 sst_configure_runtime_pm(sst_drv_ctx);147 148 return ret;149 150do_free_drv_ctx:151 sst_context_cleanup(sst_drv_ctx);152 dev_err(sst_drv_ctx->dev, "Probe failed with %d\n", ret);153 return ret;154}155 156/**157 * intel_sst_remove - PCI remove function158 *159 * @pci: PCI device structure160 *161 * This function is called by OS when a device is unloaded162 * This frees the interrupt etc163 */164static void intel_sst_remove(struct pci_dev *pci)165{166 struct intel_sst_drv *sst_drv_ctx = pci_get_drvdata(pci);167 168 sst_context_cleanup(sst_drv_ctx);169 pci_dev_put(sst_drv_ctx->pci);170 pci_release_regions(pci);171 pci_set_drvdata(pci, NULL);172}173 174/* PCI Routines */175static const struct pci_device_id intel_sst_ids[] = {176 { PCI_DEVICE_DATA(INTEL, SST_TNG, 0) },177 { 0, }178};179 180static struct pci_driver sst_driver = {181 .name = SST_DRV_NAME,182 .id_table = intel_sst_ids,183 .probe = intel_sst_probe,184 .remove = intel_sst_remove,185#ifdef CONFIG_PM186 .driver = {187 .pm = &intel_sst_pm,188 },189#endif190};191 192module_pci_driver(sst_driver);193 194MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine PCI Driver");195MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");196MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");197MODULE_AUTHOR("Dharageswari R <dharageswari.r@intel.com>");198MODULE_AUTHOR("KP Jeeja <jeeja.kp@intel.com>");199MODULE_LICENSE("GPL v2");200MODULE_ALIAS("sst");201