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ASoC: SOF: Intel: Initialize hdaudio bus properly 

The SOF HD-audio bus has its house-made initialization code.  It's
supposedly for making the code independent from HD-audio bus drivers.
However, this is error-prone, and above all, the SOF driver has
already dependency on HD-audio bus driver when CONFIG_SND_SOF_HDA is
set.  That is, if this Kconfig is set, there is no reason to avoid the
call to the proper bus init function.

Also, the ext_ops that is set at bus initialization can be better
handled inside sof_hda_bus_init().  We don't need to refer this
outside the bus initialization.

So this patch addresses these issues:
- sof_hda_bus_init() calls nothing but snd_hdac_ext_bus_init()
  when CONFIG_SND_SOF_HDA is set.  Otherwise some fields are
  initialized locally like before for avoiding the dependency.
- ext_ops is referred inside sof_hda_bus_init().  The ext_ops argument
  of snd_hda_bus_init() is dropped.

Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2019-08-07 20:50:50 +02:00
parent 19abfefd4c
commit d4ff1b3917
3 changed files with 11 additions and 29 deletions
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31
sound/soc/sof/intel/hda-bus.c
View File

@ -12,28 +12,26 @@
#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,
};
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
#define sof_hda_ext_ops snd_soc_hdac_hda_get_ops()
#else
#define sof_hda_ext_ops NULL
#endif
/*
* 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)
void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev)
{
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
snd_hdac_ext_bus_init(bus, dev, NULL, sof_hda_ext_ops);
#else /* CONFIG_SND_SOC_SOF_HDA */
memset(bus, 0, sizeof(*bus));
bus->dev = dev;
INIT_LIST_HEAD(&bus->stream_list);
bus->irq = -1;
bus->ext_ops = ext_ops;
/*
* There is only one HDA bus atm. keep the index as 0.
@ -42,16 +40,5 @@ void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev,
bus->idx = 0;
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
#endif /* CONFIG_SND_SOC_SOF_HDA */
}

6
sound/soc/sof/intel/hda.c
View File

@ -236,7 +236,6 @@ static int hda_init(struct snd_sof_dev *sdev)
{
struct hda_bus *hbus;
struct hdac_bus *bus;
struct hdac_ext_bus_ops *ext_ops = NULL;
struct pci_dev *pci = to_pci_dev(sdev->dev);
int ret;
@ -244,10 +243,7 @@ static int hda_init(struct snd_sof_dev *sdev)
bus = sof_to_bus(sdev);
/* HDA bus init */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
ext_ops = snd_soc_hdac_hda_get_ops();
#endif
sof_hda_bus_init(bus, &pci->dev, ext_ops);
sof_hda_bus_init(bus, &pci->dev);
/* Workaround for a communication error on CFL (bko#199007) and CNL */
if (IS_CFL(pci) || IS_CNL(pci))

3
sound/soc/sof/intel/hda.h
View File

@ -549,8 +549,7 @@ void hda_dsp_ctrl_stop_chip(struct snd_sof_dev *sdev);
/*
* HDA bus operations.
*/
void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev,
const struct hdac_ext_bus_ops *ext_ops);
void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev);
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
/*