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