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ASoC: SOF: Intel: Add hda-bus support and initialization

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Use hdac_io_ops and configure all required spin_locks/mutex to use
hdac_hda_ext library. Keep the code conditional so that the HDA link
and audio codec support can be removed.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Keyon Jie 2019-04-12 11:08:53 -05:00 committed by Mark Brown
parent c6be710f5e
commit 78ad1f07a4
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1 changed files with 108 additions and 0 deletions
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108
sound/soc/sof/intel/hda-bus.c Normal file
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Authors: Keyon Jie <yang.jie@linux.intel.com>
#include <linux/io.h>
#include <sound/hdaudio.h>
#include "../sof-priv.h"
#include "hda.h"
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
static const struct hdac_bus_ops bus_ops = {
.command = snd_hdac_bus_send_cmd,
.get_response = snd_hdac_bus_get_response,
};
#endif
static void sof_hda_writel(u32 value, u32 __iomem *addr)
{
writel(value, addr);
}
static u32 sof_hda_readl(u32 __iomem *addr)
{
return readl(addr);
}
static void sof_hda_writew(u16 value, u16 __iomem *addr)
{
writew(value, addr);
}
static u16 sof_hda_readw(u16 __iomem *addr)
{
return readw(addr);
}
static void sof_hda_writeb(u8 value, u8 __iomem *addr)
{
writeb(value, addr);
}
static u8 sof_hda_readb(u8 __iomem *addr)
{
return readb(addr);
}
static int sof_hda_dma_alloc_pages(struct hdac_bus *bus, int type,
size_t size, struct snd_dma_buffer *buf)
{
return snd_dma_alloc_pages(type, bus->dev, size, buf);
}
static void sof_hda_dma_free_pages(struct hdac_bus *bus,
struct snd_dma_buffer *buf)
{
snd_dma_free_pages(buf);
}
static const struct hdac_io_ops io_ops = {
.reg_writel = sof_hda_writel,
.reg_readl = sof_hda_readl,
.reg_writew = sof_hda_writew,
.reg_readw = sof_hda_readw,
.reg_writeb = sof_hda_writeb,
.reg_readb = sof_hda_readb,
.dma_alloc_pages = sof_hda_dma_alloc_pages,
.dma_free_pages = sof_hda_dma_free_pages,
};
/*
* This can be used for both with/without hda link support.
*/
void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev,
const struct hdac_ext_bus_ops *ext_ops)
{
static int idx;
memset(bus, 0, sizeof(*bus));
bus->dev = dev;
bus->io_ops = &io_ops;
INIT_LIST_HEAD(&bus->stream_list);
bus->irq = -1;
bus->ext_ops = ext_ops;
bus->idx = idx++;
spin_lock_init(&bus->reg_lock);
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
INIT_LIST_HEAD(&bus->codec_list);
INIT_LIST_HEAD(&bus->hlink_list);
mutex_init(&bus->cmd_mutex);
mutex_init(&bus->lock);
bus->ops = &bus_ops;
INIT_WORK(&bus->unsol_work, snd_hdac_bus_process_unsol_events);
bus->cmd_dma_state = true;
#endif
}