// SPDX-License-Identifier: GPL-2.0-only
/*
 * sst_acpi.c - SST (LPE) driver init file for ACPI enumeration.
 *
 * Copyright (c) 2013, Intel Corporation.
 *
 *  Authors:    Ramesh Babu K V <Ramesh.Babu@intel.com>
 *  Authors:    Omair Mohammed Abdullah <omair.m.abdullah@intel.com>
 */

#include <linux/module.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/firmware.h>
#include <linux/pm_qos.h>
#include <linux/dmi.h>
#include <linux/acpi.h>
#include <asm/platform_sst_audio.h>
#include <sound/core.h>
#include <sound/intel-dsp-config.h>
#include <sound/soc.h>
#include <sound/compress_driver.h>
#include <acpi/acbuffer.h>
#include <acpi/platform/acenv.h>
#include <acpi/platform/aclinux.h>
#include <acpi/actypes.h>
#include <acpi/acpi_bus.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include "../sst-mfld-platform.h"
#include "../../common/soc-intel-quirks.h"
#include "sst.h"

/* LPE viewpoint addresses */
#define SST_BYT_IRAM_PHY_START  0xff2c0000
#define SST_BYT_IRAM_PHY_END    0xff2d4000
#define SST_BYT_DRAM_PHY_START  0xff300000
#define SST_BYT_DRAM_PHY_END    0xff320000
#define SST_BYT_IMR_VIRT_START  0xc0000000 /* virtual addr in LPE */
#define SST_BYT_IMR_VIRT_END    0xc01fffff
#define SST_BYT_SHIM_PHY_ADDR   0xff340000
#define SST_BYT_MBOX_PHY_ADDR   0xff344000
#define SST_BYT_DMA0_PHY_ADDR   0xff298000
#define SST_BYT_DMA1_PHY_ADDR   0xff29c000
#define SST_BYT_SSP0_PHY_ADDR   0xff2a0000
#define SST_BYT_SSP2_PHY_ADDR   0xff2a2000

#define BYT_FW_MOD_TABLE_OFFSET 0x80000
#define BYT_FW_MOD_TABLE_SIZE   0x100
#define BYT_FW_MOD_OFFSET       (BYT_FW_MOD_TABLE_OFFSET + BYT_FW_MOD_TABLE_SIZE)

static const struct sst_info byt_fwparse_info = {
        .use_elf        = false,
        .max_streams    = 25,
        .iram_start     = SST_BYT_IRAM_PHY_START,
        .iram_end       = SST_BYT_IRAM_PHY_END,
        .iram_use       = true,
        .dram_start     = SST_BYT_DRAM_PHY_START,
        .dram_end       = SST_BYT_DRAM_PHY_END,
        .dram_use       = true,
        .imr_start      = SST_BYT_IMR_VIRT_START,
        .imr_end        = SST_BYT_IMR_VIRT_END,
        .imr_use        = true,
        .mailbox_start  = SST_BYT_MBOX_PHY_ADDR,
        .num_probes     = 0,
        .lpe_viewpt_rqd  = true,
};

static const struct sst_ipc_info byt_ipc_info = {
        .ipc_offset = 0,
        .mbox_recv_off = 0x400,
};

static const struct sst_lib_dnld_info  byt_lib_dnld_info = {
        .mod_base           = SST_BYT_IMR_VIRT_START,
        .mod_end            = SST_BYT_IMR_VIRT_END,
        .mod_table_offset   = BYT_FW_MOD_TABLE_OFFSET,
        .mod_table_size     = BYT_FW_MOD_TABLE_SIZE,
        .mod_ddr_dnld       = false,
};

static const struct sst_res_info byt_rvp_res_info = {
        .shim_offset = 0x140000,
        .shim_size = 0x000100,
        .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
        .ssp0_offset = 0xa0000,
        .ssp0_size = 0x1000,
        .dma0_offset = 0x98000,
        .dma0_size = 0x4000,
        .dma1_offset = 0x9c000,
        .dma1_size = 0x4000,
        .iram_offset = 0x0c0000,
        .iram_size = 0x14000,
        .dram_offset = 0x100000,
        .dram_size = 0x28000,
        .mbox_offset = 0x144000,
        .mbox_size = 0x1000,
        .acpi_lpe_res_index = 0,
        .acpi_ddr_index = 2,
        .acpi_ipc_irq_index = 5,
};

/* BYTCR has different BIOS from BYT */
static const struct sst_res_info bytcr_res_info = {
        .shim_offset = 0x140000,
        .shim_size = 0x000100,
        .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
        .ssp0_offset = 0xa0000,
        .ssp0_size = 0x1000,
        .dma0_offset = 0x98000,
        .dma0_size = 0x4000,
        .dma1_offset = 0x9c000,
        .dma1_size = 0x4000,
        .iram_offset = 0x0c0000,
        .iram_size = 0x14000,
        .dram_offset = 0x100000,
        .dram_size = 0x28000,
        .mbox_offset = 0x144000,
        .mbox_size = 0x1000,
        .acpi_lpe_res_index = 0,
        .acpi_ddr_index = 2,
        .acpi_ipc_irq_index = 0
};

/* For "LPE0F28" ACPI device found on some Android factory OS models */
static const struct sst_res_info lpe8086_res_info = {
        .shim_offset = 0x140000,
        .shim_size = 0x000100,
        .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
        .ssp0_offset = 0xa0000,
        .ssp0_size = 0x1000,
        .dma0_offset = 0x98000,
        .dma0_size = 0x4000,
        .dma1_offset = 0x9c000,
        .dma1_size = 0x4000,
        .iram_offset = 0x0c0000,
        .iram_size = 0x14000,
        .dram_offset = 0x100000,
        .dram_size = 0x28000,
        .mbox_offset = 0x144000,
        .mbox_size = 0x1000,
        .acpi_lpe_res_index = 1,
        .acpi_ddr_index = 0,
        .acpi_ipc_irq_index = 0
};

static struct sst_platform_info byt_rvp_platform_data = {
        .probe_data = &byt_fwparse_info,
        .ipc_info = &byt_ipc_info,
        .lib_info = &byt_lib_dnld_info,
        .res_info = &byt_rvp_res_info,
        .platform = "sst-mfld-platform",
        .streams_lost_on_suspend = true,
};

/* Cherryview (Cherrytrail and Braswell) uses same mrfld dpcm fw as Baytrail,
 * so pdata is same as Baytrail, minus the streams_lost_on_suspend quirk.
 */
static struct sst_platform_info chv_platform_data = {
        .probe_data = &byt_fwparse_info,
        .ipc_info = &byt_ipc_info,
        .lib_info = &byt_lib_dnld_info,
        .res_info = &byt_rvp_res_info,
        .platform = "sst-mfld-platform",
};

static int sst_platform_get_resources(struct intel_sst_drv *ctx)
{
        struct resource *rsrc;
        struct platform_device *pdev = to_platform_device(ctx->dev);

        /* All ACPI resource request here */
        /* Get Shim addr */
        rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
                                        ctx->pdata->res_info->acpi_lpe_res_index);
        if (!rsrc) {
                dev_err(ctx->dev, "Invalid SHIM base from IFWI\n");
                return -EIO;
        }
        dev_info(ctx->dev, "LPE base: %#x size:%#x", (unsigned int) rsrc->start,
                                        (unsigned int)resource_size(rsrc));

        ctx->iram_base = rsrc->start + ctx->pdata->res_info->iram_offset;
        ctx->iram_end =  ctx->iram_base + ctx->pdata->res_info->iram_size - 1;
        dev_info(ctx->dev, "IRAM base: %#x", ctx->iram_base);
        ctx->iram = devm_ioremap(ctx->dev, ctx->iram_base,
                                         ctx->pdata->res_info->iram_size);
        if (!ctx->iram) {
                dev_err(ctx->dev, "unable to map IRAM\n");
                return -EIO;
        }

        ctx->dram_base = rsrc->start + ctx->pdata->res_info->dram_offset;
        ctx->dram_end = ctx->dram_base + ctx->pdata->res_info->dram_size - 1;
        dev_info(ctx->dev, "DRAM base: %#x", ctx->dram_base);
        ctx->dram = devm_ioremap(ctx->dev, ctx->dram_base,
                                         ctx->pdata->res_info->dram_size);
        if (!ctx->dram) {
                dev_err(ctx->dev, "unable to map DRAM\n");
                return -EIO;
        }

        ctx->shim_phy_add = rsrc->start + ctx->pdata->res_info->shim_offset;
        dev_info(ctx->dev, "SHIM base: %#x", ctx->shim_phy_add);
        ctx->shim = devm_ioremap(ctx->dev, ctx->shim_phy_add,
                                        ctx->pdata->res_info->shim_size);
        if (!ctx->shim) {
                dev_err(ctx->dev, "unable to map SHIM\n");
                return -EIO;
        }

        /* reassign physical address to LPE viewpoint address */
        ctx->shim_phy_add = ctx->pdata->res_info->shim_phy_addr;

        /* Get mailbox addr */
        ctx->mailbox_add = rsrc->start + ctx->pdata->res_info->mbox_offset;
        dev_info(ctx->dev, "Mailbox base: %#x", ctx->mailbox_add);
        ctx->mailbox = devm_ioremap(ctx->dev, ctx->mailbox_add,
                                            ctx->pdata->res_info->mbox_size);
        if (!ctx->mailbox) {
                dev_err(ctx->dev, "unable to map mailbox\n");
                return -EIO;
        }

        /* reassign physical address to LPE viewpoint address */
        ctx->mailbox_add = ctx->info.mailbox_start;

        rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
                                        ctx->pdata->res_info->acpi_ddr_index);
        if (!rsrc) {
                dev_err(ctx->dev, "Invalid DDR base from IFWI\n");
                return -EIO;
        }
        ctx->ddr_base = rsrc->start;
        ctx->ddr_end = rsrc->end;
        dev_info(ctx->dev, "DDR base: %#x", ctx->ddr_base);
        ctx->ddr = devm_ioremap(ctx->dev, ctx->ddr_base,
                                        resource_size(rsrc));
        if (!ctx->ddr) {
                dev_err(ctx->dev, "unable to map DDR\n");
                return -EIO;
        }

        /* Find the IRQ */
        ctx->irq_num = platform_get_irq(pdev,
                                ctx->pdata->res_info->acpi_ipc_irq_index);
        if (ctx->irq_num <= 0)
                return ctx->irq_num < 0 ? ctx->irq_num : -EIO;

        return 0;
}

static int sst_acpi_probe(struct platform_device *pdev)
{
        struct device *dev = &pdev->dev;
        int ret = 0;
        struct intel_sst_drv *ctx;
        const struct acpi_device_id *id;
        struct snd_soc_acpi_mach *mach;
        struct platform_device *mdev;
        struct platform_device *plat_dev;
        struct sst_platform_info *pdata;
        unsigned int dev_id;

        id = acpi_match_device(dev->driver->acpi_match_table, dev);
        if (!id)
                return -ENODEV;

        ret = snd_intel_acpi_dsp_driver_probe(dev, id->id);
        if (ret != SND_INTEL_DSP_DRIVER_ANY && ret != SND_INTEL_DSP_DRIVER_SST) {
                dev_dbg(dev, "SST ACPI driver not selected, aborting probe\n");
                return -ENODEV;
        }

        dev_dbg(dev, "for %s\n", id->id);

        mach = (struct snd_soc_acpi_mach *)id->driver_data;
        mach = snd_soc_acpi_find_machine(mach);
        if (mach == NULL) {
                dev_err(dev, "No matching machine driver found\n");
                return -ENODEV;
        }

        if (soc_intel_is_byt())
                mach->pdata = &byt_rvp_platform_data;
        else
                mach->pdata = &chv_platform_data;
        pdata = mach->pdata;

        if (!strcmp(id->id, "LPE0F28")) {
                struct resource *rsrc;

                /* Use regular BYT SST PCI VID:PID */
                dev_id = 0x80860F28;
                byt_rvp_platform_data.res_info = &lpe8086_res_info;

                /*
                 * The "LPE0F28" ACPI device has separate IO-mem resources for:
                 * DDR, SHIM, MBOX, IRAM, DRAM, CFG
                 * None of which covers the entire LPE base address range.
                 * lpe8086_res_info.acpi_lpe_res_index points to the SHIM.
                 * Patch this to cover the entire base address range as expected
                 * by sst_platform_get_resources().
                 */
                rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
                                             pdata->res_info->acpi_lpe_res_index);
                if (!rsrc) {
                        dev_err(dev, "Invalid SHIM base\n");
                        return -EIO;
                }
                rsrc->start -= pdata->res_info->shim_offset;
                rsrc->end = rsrc->start + 0x200000 - 1;
        } else {
                ret = kstrtouint(id->id, 16, &dev_id);
                if (ret < 0) {
                        dev_err(dev, "Unique device id conversion error: %d\n", ret);
                        return ret;
                }

                if (soc_intel_is_byt_cr(pdev))
                        byt_rvp_platform_data.res_info = &bytcr_res_info;
        }

        dev_dbg(dev, "ACPI device id: %x\n", dev_id);

        ret = sst_alloc_drv_context(&ctx, dev, dev_id);
        if (ret < 0)
                return ret;

        /* update machine parameters */
        mach->mach_params.acpi_ipc_irq_index =
                pdata->res_info->acpi_ipc_irq_index;

        plat_dev = platform_device_register_data(dev, pdata->platform, -1,
                                                NULL, 0);
        if (IS_ERR(plat_dev)) {
                dev_err(dev, "Failed to create machine device: %s\n",
                        pdata->platform);
                return PTR_ERR(plat_dev);
        }

        /*
         * Create platform device for sst machine driver,
         * pass machine info as pdata
         */
        mdev = platform_device_register_data(dev, mach->drv_name, -1,
                                        (const void *)mach, sizeof(*mach));
        if (IS_ERR(mdev)) {
                dev_err(dev, "Failed to create machine device: %s\n",
                        mach->drv_name);
                return PTR_ERR(mdev);
        }

        /* Fill sst platform data */
        ctx->pdata = pdata;
        strscpy(ctx->firmware_name, mach->fw_filename);

        ret = sst_platform_get_resources(ctx);
        if (ret)
                return ret;

        ret = sst_context_init(ctx);
        if (ret < 0)
                return ret;

        sst_configure_runtime_pm(ctx);
        platform_set_drvdata(pdev, ctx);
        return ret;
}

/**
* sst_acpi_remove - remove function
*
* @pdev:        platform device structure
*
* This function is called by OS when a device is unloaded
* This frees the interrupt etc
*/
static void sst_acpi_remove(struct platform_device *pdev)
{
        struct intel_sst_drv *ctx;

        ctx = platform_get_drvdata(pdev);
        sst_context_cleanup(ctx);
        platform_set_drvdata(pdev, NULL);
}

static const struct acpi_device_id sst_acpi_ids[] = {
        { "LPE0F28", (unsigned long)&snd_soc_acpi_intel_baytrail_machines},
        { "80860F28", (unsigned long)&snd_soc_acpi_intel_baytrail_machines},
        { "808622A8", (unsigned long)&snd_soc_acpi_intel_cherrytrail_machines},
        { },
};

MODULE_DEVICE_TABLE(acpi, sst_acpi_ids);

static struct platform_driver sst_acpi_driver = {
        .driver = {
                .name                   = "intel_sst_acpi",
                .acpi_match_table       = ACPI_PTR(sst_acpi_ids),
                .pm                     = &intel_sst_pm,
        },
        .probe  = sst_acpi_probe,
        .remove = sst_acpi_remove,
};

module_platform_driver(sst_acpi_driver);

MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine ACPI Driver");
MODULE_AUTHOR("Ramesh Babu K V");
MODULE_AUTHOR("Omair Mohammed Abdullah");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("sst");