This patch adds a kernel module which is used by the legacy HDA codec drivers as library. This implements hdac_ext_bus_ops to enable the reuse of legacy HDA codec drivers with ASoC platform drivers.
Signed-off-by: Rakesh Ughreja rakesh.a.ughreja@intel.com --- sound/pci/hda/hda_bind.c | 6 + sound/soc/codecs/Kconfig | 5 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/hdac_hda.c | 448 ++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/hdac_hda.h | 23 +++ 5 files changed, 484 insertions(+) create mode 100644 sound/soc/codecs/hdac_hda.c create mode 100644 sound/soc/codecs/hdac_hda.h
diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c index d361bb7..ec8f846 100644 --- a/sound/pci/hda/hda_bind.c +++ b/sound/pci/hda/hda_bind.c @@ -81,6 +81,9 @@ static int hda_codec_driver_probe(struct device *dev) hda_codec_patch_t patch; int err;
+ if ((codec->bus->core.ext_ops) && (codec->bus->core.ext_ops->probe)) + return codec->bus->core.ext_ops->probe(&codec->core); + if (WARN_ON(!codec->preset)) return -EINVAL;
@@ -134,6 +137,9 @@ static int hda_codec_driver_remove(struct device *dev) { struct hda_codec *codec = dev_to_hda_codec(dev);
+ if ((codec->bus->core.ext_ops) && (codec->bus->core.ext_ops->remove)) + return codec->bus->core.ext_ops->remove(&codec->core); + if (codec->patch_ops.free) codec->patch_ops.free(codec); snd_hda_codec_cleanup_for_unbind(codec); diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index f72a901..87a166f 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -81,6 +81,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_ES7134 select SND_SOC_GTM601 select SND_SOC_HDAC_HDMI + select SND_SOC_HDAC_HDA select SND_SOC_ICS43432 select SND_SOC_INNO_RK3036 select SND_SOC_ISABELLE if I2C @@ -595,6 +596,10 @@ config SND_SOC_HDAC_HDMI select SND_PCM_ELD select HDMI
+config SND_SOC_HDAC_HDA + tristate + select SND_HDA + config SND_SOC_ICS43432 tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 56c3252..8fec3a7 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -75,6 +75,7 @@ snd-soc-es8328-i2c-objs := es8328-i2c.o snd-soc-es8328-spi-objs := es8328-spi.o snd-soc-gtm601-objs := gtm601.o snd-soc-hdac-hdmi-objs := hdac_hdmi.o +snd-soc-hdac-hda-objs := hdac_hda.o snd-soc-ics43432-objs := ics43432.o snd-soc-inno-rk3036-objs := inno_rk3036.o snd-soc-isabelle-objs := isabelle.o @@ -323,6 +324,7 @@ obj-$(CONFIG_SND_SOC_ES8328_I2C)+= snd-soc-es8328-i2c.o obj-$(CONFIG_SND_SOC_ES8328_SPI)+= snd-soc-es8328-spi.o obj-$(CONFIG_SND_SOC_GTM601) += snd-soc-gtm601.o obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o +obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c new file mode 100644 index 0000000..33b6667 --- /dev/null +++ b/sound/soc/codecs/hdac_hda.c @@ -0,0 +1,448 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright(c) 2015-17 Intel Corporation. + +/* + * hdac_hda.c - ASoC exntensions to reuse the legacy HDA codec drivers + * with ASoC platform drivers. These APIs are called by the legacy HDA + * codec drivers using hdac_ext_bus_ops ops. + */ + +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/hdaudio_ext.h> +#include <sound/hda_register.h> +#include "../../hda/local.h" +#include "../../pci/hda/hda_codec.h" +#include "hdac_hda.h" + +#define HDAC_ANALOG_DAI_ID 0 +#define HDAC_DIGITAL_DAI_ID 1 + +#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ + SNDRV_PCM_FMTBIT_U8 | \ + SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_U16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_U24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE | \ + SNDRV_PCM_FMTBIT_U32_LE | \ + SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) + +static int hdac_hda_dai_open(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai); +static void hdac_hda_dai_close(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai); +static int hdac_hda_dai_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai); +static int hdac_hda_dai_hw_free(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai); +static int hdac_hda_dai_set_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width); +static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt, + struct snd_soc_dai *dai); + +static struct snd_soc_dai_ops hdac_hda_dai_ops = { + .startup = hdac_hda_dai_open, + .shutdown = hdac_hda_dai_close, + .prepare = hdac_hda_dai_prepare, + .hw_free = hdac_hda_dai_hw_free, + .set_tdm_slot = hdac_hda_dai_set_tdm_slot, +}; + +static struct snd_soc_dai_driver hdac_hda_dais[] = { +{ + .id = HDAC_ANALOG_DAI_ID, + .name = "Analog Codec DAI", + .ops = &hdac_hda_dai_ops, + .playback = { + .stream_name = "Analog Codec Playback", + .channels_min = 1, + .channels_max = 16, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = STUB_FORMATS, + .sig_bits = 24, + }, + .capture = { + .stream_name = "Analog Codec Capture", + .channels_min = 1, + .channels_max = 16, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = STUB_FORMATS, + .sig_bits = 24, + }, +}, +{ + .id = HDAC_DIGITAL_DAI_ID, + .name = "Digital Codec DAI", + .ops = &hdac_hda_dai_ops, + .playback = { + .stream_name = "Digital Codec Playback", + .channels_min = 1, + .channels_max = 16, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = STUB_FORMATS, + .sig_bits = 24, + }, + .capture = { + .stream_name = "Digital Codec Capture", + .channels_min = 1, + .channels_max = 16, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = STUB_FORMATS, + .sig_bits = 24, + }, +} +}; + +static int hdac_hda_dai_set_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai); + struct hdac_hda_pcm *pcm; + + pcm = &hda_pvt->pcm[dai->id]; + if (tx_mask) + pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask; + else + pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_CAPTURE] = rx_mask; + + return 0; +} + +static int hdac_hda_dai_hw_free(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai); + struct hda_pcm_stream *hda_stream; + struct hda_pcm *pcm; + + pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai); + if (pcm == NULL) + return -EINVAL; + + hda_stream = &pcm->stream[substream->stream]; + snd_hda_codec_cleanup(&hda_pvt->codec, hda_stream, substream); + + return 0; +} + +static int hdac_hda_dai_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai); + struct snd_pcm_runtime *runtime = substream->runtime; + struct hdac_device *hdev = &hda_pvt->codec.core; + struct hda_pcm_stream *hda_stream; + unsigned int format_val; + struct hda_pcm *pcm; + int ret = 0; + + pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai); + if (pcm == NULL) + return -EINVAL; + + hda_stream = &pcm->stream[substream->stream]; + + format_val = snd_hdac_calc_stream_format(runtime->rate, + runtime->channels, + runtime->format, + hda_stream->maxbps, + 0); + if (!format_val) { + dev_err(&hdev->dev, + "invalid format_val, rate=%d, ch=%d, format=%d\n", + runtime->rate, runtime->channels, runtime->format); + return -EINVAL; + } + + ret = snd_hda_codec_prepare(&hda_pvt->codec, hda_stream, + hda_pvt->pcm[dai->id].stream_tag[substream->stream], + format_val, substream); + if (ret < 0) { + dev_err(&hdev->dev, "codec prepare failed %d\n", ret); + return ret; + } + + return ret; +} + +static int hdac_hda_dai_open(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai); + struct hda_pcm_stream *hda_stream; + struct hda_pcm *pcm; + int ret = -ENODEV; + + pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai); + if (pcm == NULL) + return -EINVAL; + + snd_hda_codec_pcm_get(pcm); + + hda_stream = &pcm->stream[substream->stream]; + if (hda_stream->ops.open) + ret = hda_stream->ops.open(hda_stream, &hda_pvt->codec, + substream); + return ret; +} + +static void hdac_hda_dai_close(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai); + struct hda_pcm_stream *hda_stream; + struct hda_pcm *pcm; + + pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai); + if (pcm == NULL) + return; + + hda_stream = &pcm->stream[substream->stream]; + if (hda_stream->ops.close) + hda_stream->ops.close(hda_stream, &hda_pvt->codec, substream); + + snd_hda_codec_pcm_put(pcm); +} + +static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt, + struct snd_soc_dai *dai) +{ + + struct hda_codec *hcodec = &hda_pvt->codec; + struct hda_pcm *cpcm; + const char *pcm_name; + + if (dai->id == HDAC_ANALOG_DAI_ID) + pcm_name = "Analog"; + else + pcm_name = "Digital"; + + list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) { + if (strpbrk(cpcm->name, pcm_name)) + return cpcm; + } + + dev_err(&hcodec->core.dev, "didn't find PCM for DAI %s\n", dai->name); + return NULL; +} + +static int hdac_hda_codec_probe(struct snd_soc_codec *codec) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_codec_get_drvdata(codec); + struct snd_soc_dapm_context *dapm = + snd_soc_component_get_dapm(&codec->component); + struct hdac_device *hdev = &hda_pvt->codec.core; + struct hda_codec *hcodec = &hda_pvt->codec; + struct hdac_ext_link *hlink = NULL; + hda_codec_patch_t patch; + int ret, i = 0; + u16 codec_mask; + + hda_pvt->scodec = codec; + hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev)); + if (!hlink) { + dev_err(&hdev->dev, "hdac link not found\n"); + return -EIO; + } + + ret = snd_hdac_ext_bus_link_get(hdev->bus, hlink); + + udelay(1000); + do { + codec_mask = snd_hdac_chip_readw(hdev->bus, STATESTS); + if (codec_mask) + break; + i++; + udelay(100); + } while (i < 100); + + if (!codec_mask) { + dev_err(&hdev->dev, "No codecs found after link reset\n"); + return -EIO; + } + + snd_hdac_chip_writew(hdev->bus, STATESTS, STATESTS_INT_MASK); + + ret = snd_hda_codec_device_new(hcodec->bus, + codec->component.card->snd_card, hdev->addr, hcodec); + if (ret < 0) { + dev_err(codec->dev, "failed to create hda codec %d\n", ret); + return ret; + } + + /* + * snd_hda_codec_new1 decrements the usage count and so get the pm + * count else the device will be powered off + */ + pm_runtime_get_noresume(&hdev->dev); + + hcodec->bus->card = dapm->card->snd_card; + + patch = (hda_codec_patch_t)hcodec->preset->driver_data; + if (patch) { + ret = patch(hcodec); + if (ret < 0) { + dev_err(codec->dev, "patch failed %d\n", ret); + return ret; + } + } else { + dev_dbg(&hdev->dev, "no patch file found\n"); + } + + ret = snd_hda_codec_set_name(hcodec, hcodec->preset->name); + if (ret < 0) { + dev_err(codec->dev, "name failed %s\n", hcodec->preset->name); + return ret; + } + + ret = snd_hdac_regmap_init(&hcodec->core); + if (ret < 0) { + dev_err(codec->dev, "regmap init failed\n"); + return ret; + } + + ret = snd_hda_codec_parse_pcms(hcodec); + if (ret < 0) { + dev_err(&hdev->dev, "unable to map pcms to dai %d\n", ret); + return ret; + } + + ret = snd_hda_codec_build_controls(hcodec); + if (ret < 0) { + dev_err(&hdev->dev, "unable to create controls %d\n", ret); + return ret; + } + + hcodec->core.lazy_cache = true; + + /* + * hdac_device core already sets the state to active and calls + * get_noresume. So enable runtime and set the device to suspend. + * pm_runtime_enable is also called during codec registeration + */ + pm_runtime_put(&hdev->dev); + pm_runtime_suspend(&hdev->dev); + + return 0; +} + +static int hdac_hda_codec_remove(struct snd_soc_codec *codec) +{ + struct hdac_hda_priv *hda_pvt = snd_soc_codec_get_drvdata(codec); + struct hdac_device *hdev = &hda_pvt->codec.core; + struct hdac_ext_link *hlink = NULL; + + hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev)); + if (!hlink) { + dev_err(&hdev->dev, "hdac link not found\n"); + return -EIO; + } + + snd_hdac_ext_bus_link_put(hdev->bus, hlink); + pm_runtime_disable(&hdev->dev); + + return 0; +} + + +static const struct snd_soc_dapm_route hdac_hda_dapm_routes[] = { + {"AIF1TX", NULL, "Codec Input Pin1"}, + {"AIF2TX", NULL, "Codec Input Pin2"}, + + {"Codec Output Pin1", NULL, "AIF1RX"}, + {"Codec Output Pin2", NULL, "AIF2RX"}, +}; + +static const struct snd_soc_dapm_widget hdac_hda_dapm_widgets[] = { + + /* Audio Interface */ + SND_SOC_DAPM_AIF_IN("AIF1RX", "Analog Codec Playback", 0, + SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_IN("AIF2RX", "Digital Codec Playback", 0, + SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_OUT("AIF1TX", "Analog Codec Capture", 0, + SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_OUT("AIF2TX", "Digital Codec Capture", 0, + SND_SOC_NOPM, 0, 0), + + /* Input Pins */ + SND_SOC_DAPM_INPUT("Codec Input Pin1"), + SND_SOC_DAPM_INPUT("Codec Input Pin2"), + + /* Output Pins */ + SND_SOC_DAPM_OUTPUT("Codec Output Pin1"), + SND_SOC_DAPM_OUTPUT("Codec Output Pin2"), +}; + + +static struct snd_soc_codec_driver hdac_hda_codec = { + .probe = hdac_hda_codec_probe, + .remove = hdac_hda_codec_remove, + .idle_bias_off = true, + .component_driver = { + .dapm_widgets = hdac_hda_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(hdac_hda_dapm_widgets), + .dapm_routes = hdac_hda_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(hdac_hda_dapm_routes), + }, +}; + +static int hdac_hda_dev_probe(struct hdac_device *hdev) +{ + struct hdac_ext_link *hlink = NULL; + struct hdac_hda_priv *hda_pvt; + int ret; + + /* hold the ref while we probe */ + hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev)); + if (!hlink) { + dev_err(&hdev->dev, "hdac link not found\n"); + return -EIO; + } + snd_hdac_ext_bus_link_get(hdev->bus, hlink); + + hda_pvt = hdac_to_hda_priv(hdev); + if (hda_pvt == NULL) + return -ENOMEM; + + /* ASoC specific initialization */ + ret = snd_soc_register_codec(&hdev->dev, &hdac_hda_codec, hdac_hda_dais, + ARRAY_SIZE(hdac_hda_dais)); + if (ret < 0) { + dev_err(&hdev->dev, "failed to register HDA codec %d\n", ret); + return ret; + } + + dev_set_drvdata(&hdev->dev, hda_pvt); + snd_hdac_ext_bus_link_put(hdev->bus, hlink); + + return ret; +} + +static int hdac_hda_dev_remove(struct hdac_device *hdev) +{ + snd_soc_unregister_codec(&hdev->dev); + return 0; +} + +static struct hdac_ext_bus_ops hdac_ops = { + .probe = hdac_hda_dev_probe, + .remove = hdac_hda_dev_remove, +}; + +struct hdac_ext_bus_ops *snd_soc_hdac_hda_get_ops(void) +{ + return &hdac_ops; +} +EXPORT_SYMBOL_GPL(snd_soc_hdac_hda_get_ops); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("ASoC Extensions for legacy HDA Drivers"); +MODULE_AUTHOR("Rakesh Ughrejarakesh.a.ughreja@intel.com"); diff --git a/sound/soc/codecs/hdac_hda.h b/sound/soc/codecs/hdac_hda.h new file mode 100644 index 0000000..61ce64a --- /dev/null +++ b/sound/soc/codecs/hdac_hda.h @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright(c) 2015-17 Intel Corporation. + +#ifndef __HDAC_HDA_H__ +#define __HDAC_HDA_H__ + +struct hdac_hda_pcm { + int stream_tag[2]; +}; + +struct hdac_hda_priv { + struct hda_codec codec; + struct snd_soc_codec *scodec; + struct hdac_hda_pcm pcm[2]; +}; + +#define hdac_to_hda_priv(_hdac) \ + container_of(_hdac, struct hdac_hda_priv, codec.core) +#define hdac_to_hda_codec(_hdac) container_of(_hdac, struct hda_codec, core) + +struct hdac_ext_bus_ops *snd_soc_hdac_hda_get_ops(void); + +#endif /* __HDAC_HDA_H__ */