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/*
* skl-message.c - HDA DSP interface for FW registration, Pipe and Module
* configurations
*
* Copyright (C) 2015 Intel Corp
* Author:Rafal Redzimski <rafal.f.redzimski@intel.com>
* Jeeja KP <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 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 <linux/slab.h>
#include <linux/pci.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include "skl-sst-dsp.h"
#include "skl-sst-ipc.h"
#include "skl.h"
#include "../common/sst-dsp.h"
#include "../common/sst-dsp-priv.h"
static int skl_alloc_dma_buf(struct device *dev,
struct snd_dma_buffer *dmab, size_t size)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
struct hdac_bus *bus = ebus_to_hbus(ebus);
if (!bus)
return -ENODEV;
return bus->io_ops->dma_alloc_pages(bus, SNDRV_DMA_TYPE_DEV, size, dmab);
}
static int skl_free_dma_buf(struct device *dev, struct snd_dma_buffer *dmab)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
struct hdac_bus *bus = ebus_to_hbus(ebus);
if (!bus)
return -ENODEV;
bus->io_ops->dma_free_pages(bus, dmab);
return 0;
}
int skl_init_dsp(struct skl *skl)
{
void __iomem *mmio_base;
struct hdac_ext_bus *ebus = &skl->ebus;
struct hdac_bus *bus = ebus_to_hbus(ebus);
int irq = bus->irq;
struct skl_dsp_loader_ops loader_ops;
int ret;
loader_ops.alloc_dma_buf = skl_alloc_dma_buf;
loader_ops.free_dma_buf = skl_free_dma_buf;
/* enable ppcap interrupt */
snd_hdac_ext_bus_ppcap_enable(&skl->ebus, true);
snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, true);
/* read the BAR of the ADSP MMIO */
mmio_base = pci_ioremap_bar(skl->pci, 4);
if (mmio_base == NULL) {
dev_err(bus->dev, "ioremap error\n");
return -ENXIO;
}
ret = skl_sst_dsp_init(bus->dev, mmio_base, irq,
loader_ops, &skl->skl_sst);
dev_dbg(bus->dev, "dsp registration status=%d\n", ret);
return ret;
}
void skl_free_dsp(struct skl *skl)
{
struct hdac_ext_bus *ebus = &skl->ebus;
struct hdac_bus *bus = ebus_to_hbus(ebus);
struct skl_sst *ctx = skl->skl_sst;
/* disable ppcap interrupt */
snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, false);
skl_sst_dsp_cleanup(bus->dev, ctx);
if (ctx->dsp->addr.lpe)
iounmap(ctx->dsp->addr.lpe);
}
int skl_suspend_dsp(struct skl *skl)
{
struct skl_sst *ctx = skl->skl_sst;
int ret;
/* if ppcap is not supported return 0 */
if (!skl->ebus.ppcap)
return 0;
ret = skl_dsp_sleep(ctx->dsp);
if (ret < 0)
return ret;
/* disable ppcap interrupt */
snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, false);
snd_hdac_ext_bus_ppcap_enable(&skl->ebus, false);
return 0;
}
int skl_resume_dsp(struct skl *skl)
{
struct skl_sst *ctx = skl->skl_sst;
/* if ppcap is not supported return 0 */
if (!skl->ebus.ppcap)
return 0;
/* enable ppcap interrupt */
snd_hdac_ext_bus_ppcap_enable(&skl->ebus, true);
snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, true);
return skl_dsp_wake(ctx->dsp);
}
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