112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Authors: Keyon Jie <yang.jie@linux.intel.com>
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#include <linux/io.h>
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#include <sound/hdaudio.h>
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#include "../sof-priv.h"
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#include "hda.h"
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
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static const struct hdac_bus_ops bus_ops = {
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.command = snd_hdac_bus_send_cmd,
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.get_response = snd_hdac_bus_get_response,
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};
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#endif
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static void sof_hda_writel(u32 value, u32 __iomem *addr)
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{
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writel(value, addr);
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}
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static u32 sof_hda_readl(u32 __iomem *addr)
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{
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return readl(addr);
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}
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static void sof_hda_writew(u16 value, u16 __iomem *addr)
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{
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writew(value, addr);
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}
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static u16 sof_hda_readw(u16 __iomem *addr)
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{
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return readw(addr);
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}
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static void sof_hda_writeb(u8 value, u8 __iomem *addr)
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{
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writeb(value, addr);
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}
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static u8 sof_hda_readb(u8 __iomem *addr)
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{
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return readb(addr);
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}
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static int sof_hda_dma_alloc_pages(struct hdac_bus *bus, int type,
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size_t size, struct snd_dma_buffer *buf)
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{
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return snd_dma_alloc_pages(type, bus->dev, size, buf);
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}
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static void sof_hda_dma_free_pages(struct hdac_bus *bus,
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struct snd_dma_buffer *buf)
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{
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snd_dma_free_pages(buf);
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}
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static const struct hdac_io_ops io_ops = {
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.reg_writel = sof_hda_writel,
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.reg_readl = sof_hda_readl,
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.reg_writew = sof_hda_writew,
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.reg_readw = sof_hda_readw,
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.reg_writeb = sof_hda_writeb,
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.reg_readb = sof_hda_readb,
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.dma_alloc_pages = sof_hda_dma_alloc_pages,
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.dma_free_pages = sof_hda_dma_free_pages,
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};
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/*
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* This can be used for both with/without hda link support.
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*/
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void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev,
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const struct hdac_ext_bus_ops *ext_ops)
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{
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memset(bus, 0, sizeof(*bus));
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bus->dev = dev;
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bus->io_ops = &io_ops;
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INIT_LIST_HEAD(&bus->stream_list);
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bus->irq = -1;
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bus->ext_ops = ext_ops;
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/*
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* There is only one HDA bus atm. keep the index as 0.
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* Need to fix when there are more than one HDA bus.
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*/
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bus->idx = 0;
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spin_lock_init(&bus->reg_lock);
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
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INIT_LIST_HEAD(&bus->codec_list);
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INIT_LIST_HEAD(&bus->hlink_list);
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mutex_init(&bus->cmd_mutex);
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mutex_init(&bus->lock);
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bus->ops = &bus_ops;
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INIT_WORK(&bus->unsol_work, snd_hdac_bus_process_unsol_events);
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bus->cmd_dma_state = true;
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#endif
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}
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