[RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Rakesh Ughreja]

Many Intel platforms (SKL, KBL) etc. in the market supports enhanced 
audio capabilities which also includes DSP processing. This patch carry
forwards the works that is done in the previous series to enable HD Audio
codecs on such platforms.

This patch series adds ASoC HDA codec driver for Intel platforms. It is
written by reusing the legacy HDA ALSA codec driver. Intention is to
maximize the reuse and minimize the changes in the legacy HDA codec driver.

I would like to receive feedback before proceeding further on this
direction.

INFO:
- This series is tested on KBL based product (Dell XPS 13).
- Basic playback is working with headset and speakers.
- HDMI playback is working.
- Capture operation is not tested.
- More platforms and use cases coverage can be added once we have basic
  agreement in terms of the overall approach.

Changes in v2:
- Using Topology framework to create DAIs and DAI Links
- Moved most commonly used functions into a separate file for machine driver
- Implemented separate Realtek ASoC HDA Driver driver for Realtek HDA codecs.
  It is just a driver registration wrapper which reuses the legacy HDA codec
  driver. This allows the removes the limitation that was present in v1.
- Implemented the review feedback.

Rakesh Ughreja (11):
  ASoC: Intel: Boards: Machine driver for Intel platforms
  ASoC: Intel: Skylake: Add entry in sst_acpi_mach for HDA codecs
  ASoC: Intel: Skylake: add HDA BE DAIs
  ASoC: Intel: Skylake: use hda_bus instead of hdac_bus
  ALSA: hda - make some of the functions externally visible
  ASoC: hdac_hda: add ASoC based HDA codec driver
  ALSA: hda: add new API snd_hda_asoc_codec_new for ASoC codec drivers
  ASoC: hdac_hda: add DAI, widgets and related ops
  ASoC: hdac_hda: add runtime PM support
  ASoC: patch_realtek: add ASoC based Realtek HDA codec driver patch
  ASoC: Intel: Boards: add support for HDA codecs

 include/sound/hdaudio_ext.h                  |   3 +-
 sound/hda/ext/hdac_ext_bus.c                 |   9 +-
 sound/pci/hda/hda_codec.c                    | 109 ++++-
 sound/pci/hda/hda_codec.h                    |   4 +
 sound/pci/hda/patch_realtek.c                |   3 +-
 sound/soc/codecs/Kconfig                     |  12 +
 sound/soc/codecs/Makefile                    |   4 +
 sound/soc/codecs/hdac_hda.c                  | 628 +++++++++++++++++++++++++++
 sound/soc/codecs/hdac_hda.h                  |  26 ++
 sound/soc/codecs/patch_realtek.c             |  48 ++
 sound/soc/intel/boards/Kconfig               |  11 +
 sound/soc/intel/boards/Makefile              |   2 +
 sound/soc/intel/boards/skl_hda_dsp_common.c  | 173 ++++++++
 sound/soc/intel/boards/skl_hda_dsp_common.h  |  42 ++
 sound/soc/intel/boards/skl_hda_dsp_generic.c | 141 ++++++
 sound/soc/intel/skylake/skl-pcm.c            |  32 +-
 sound/soc/intel/skylake/skl.c                |  79 +++-
 sound/soc/intel/skylake/skl.h                |  10 +-
 18 files changed, 1311 insertions(+), 25 deletions(-)
 create mode 100644 sound/soc/codecs/hdac_hda.c
 create mode 100644 sound/soc/codecs/hdac_hda.h
 create mode 100644 sound/soc/codecs/patch_realtek.c
 create mode 100644 sound/soc/intel/boards/skl_hda_dsp_common.c
 create mode 100644 sound/soc/intel/boards/skl_hda_dsp_common.h
 create mode 100644 sound/soc/intel/boards/skl_hda_dsp_generic.c

-- 
2.7.4

[RFC v2 01/11] ASoC: Intel: Boards: Machine driver for Intel platforms

[Rakesh Ughreja]

Add machine driver for Intel platforms(SKL/KBL) with HDA and iDisp codecs.
This patch adds support for only iDisp (HDMI/DP) codec. In the
following patch support for HDA codec will be added.

This should work for other Intel platforms as well e.g. BXT,GLK,CNL
however this series is not tested on all the platforms.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/intel/boards/Kconfig               |  10 +++
 sound/soc/intel/boards/Makefile              |   2 +
 sound/soc/intel/boards/skl_hda_dsp_common.c  | 130 +++++++++++++++++++++++++++
 sound/soc/intel/boards/skl_hda_dsp_common.h  |  42 +++++++++
 sound/soc/intel/boards/skl_hda_dsp_generic.c | 112 +++++++++++++++++++++++
 5 files changed, 296 insertions(+)
 create mode 100644 sound/soc/intel/boards/skl_hda_dsp_common.c
 create mode 100644 sound/soc/intel/boards/skl_hda_dsp_common.h
 create mode 100644 sound/soc/intel/boards/skl_hda_dsp_generic.c

diff --git a/sound/soc/intel/boards/Kconfig b/sound/soc/intel/boards/Kconfig
index 6f75470..e01137d 100644
--- a/sound/soc/intel/boards/Kconfig
+++ b/sound/soc/intel/boards/Kconfig
@@ -262,4 +262,14 @@ config SND_SOC_INTEL_KBL_RT5663_RT5514_MAX98927_MACH
           Say Y if you have such a device.
           If unsure select "N".
 
+config SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
+        tristate "ASoC Audio driver for SKL/KBL with HDA Codecs"
+        select SND_SOC_INTEL_SST
+        depends on SND_SOC_INTEL_SKYLAKE
+        select SND_SOC_HDAC_HDMI
+        help
+          This adds support for ASoC Onboard Codec HDA machine driver. This will
+          create an alsa sound card for HDA Codecs.
+          Say Y if you have such a device.
+          If unsure select "N".
 endif
diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile
index 69d2dfa..7f6ab8e 100644
--- a/sound/soc/intel/boards/Makefile
+++ b/sound/soc/intel/boards/Makefile
@@ -17,6 +17,7 @@ snd-soc-sst-byt-cht-nocodec-objs := bytcht_nocodec.o
 snd-soc-kbl_rt5663_max98927-objs := kbl_rt5663_max98927.o
 snd-soc-kbl_rt5663_rt5514_max98927-objs := kbl_rt5663_rt5514_max98927.o
 snd-soc-skl_rt286-objs := skl_rt286.o
+snd-soc-skl_hda_dsp-objs := skl_hda_dsp_generic.o skl_hda_dsp_common.o
 snd-skl_nau88l25_max98357a-objs := skl_nau88l25_max98357a.o
 snd-soc-skl_nau88l25_ssm4567-objs := skl_nau88l25_ssm4567.o
 
@@ -40,3 +41,4 @@ obj-$(CONFIG_SND_SOC_INTEL_KBL_RT5663_RT5514_MAX98927_MACH) += snd-soc-kbl_rt566
 obj-$(CONFIG_SND_SOC_INTEL_SKL_RT286_MACH) += snd-soc-skl_rt286.o
 obj-$(CONFIG_SND_SOC_INTEL_SKL_NAU88L25_MAX98357A_MACH) += snd-skl_nau88l25_max98357a.o
 obj-$(CONFIG_SND_SOC_INTEL_SKL_NAU88L25_SSM4567_MACH) += snd-soc-skl_nau88l25_ssm4567.o
+obj-$(CONFIG_SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH) += snd-soc-skl_hda_dsp.o
diff --git a/sound/soc/intel/boards/skl_hda_dsp_common.c b/sound/soc/intel/boards/skl_hda_dsp_common.c
new file mode 100644
index 0000000..5558334
--- /dev/null
+++ b/sound/soc/intel/boards/skl_hda_dsp_common.c
@@ -0,0 +1,130 @@
+/*
+ * Intel Machine Driver for SKL/KBL platforms with HDA Codecs
+ *
+ * Copyright (C) 2017, Intel Corporation. All rights reserved.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 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/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include "../../codecs/hdac_hdmi.h"
+#include "../skylake/skl.h"
+#include "skl_hda_dsp_common.h"
+
+#define NAME_SIZE	32
+
+static struct snd_soc_dai *skl_hda_get_codec_dai(struct snd_soc_card *card,
+						     const char *dai_name)
+{
+	struct snd_soc_pcm_runtime *rtd;
+
+	list_for_each_entry(rtd, &card->rtd_list, list) {
+		if (!strcmp(rtd->codec_dai->name, dai_name))
+			return rtd->codec_dai;
+	}
+
+	return NULL;
+}
+
+int skl_hda_hdmi_add_pcm(struct snd_soc_card *card, int device)
+{
+	char dai_name[NAME_SIZE];
+	struct skl_hda_private *ctx = snd_soc_card_get_drvdata(card);
+	struct skl_hda_hdmi_pcm *pcm;
+	static int i = 1;	/* hdmi codec dai name starts from index 1 */
+
+	pcm = devm_kzalloc(card->dev, sizeof(*pcm), GFP_KERNEL);
+	if (!pcm)
+		return -ENOMEM;
+
+	snprintf(dai_name, sizeof(dai_name), "intel-hdmi-hifi%d", i++);
+	pcm->codec_dai = skl_hda_get_codec_dai(card, dai_name);
+	if (!pcm->codec_dai)
+		return -EINVAL;
+
+	pcm->device = device;
+	list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
+
+	return 0;
+}
+
+/* skl_hda_digital audio interface glue - connects codec <--> CPU */
+struct snd_soc_dai_link skl_hda_be_dai_links[HDA_DSP_MAX_BE_DAI_LINKS] = {
+
+	/* Back End DAI links */
+	{
+		.name = "iDisp1",
+		.id = 1,
+		.cpu_dai_name = "iDisp1 Pin",
+		.codec_name = "ehdaudio0D2",
+		.codec_dai_name = "intel-hdmi-hifi1",
+		.platform_name = "0000:00:1f.3",
+		.dpcm_playback = 1,
+		.no_pcm = 1,
+	},
+	{
+		.name = "iDisp2",
+		.id = 2,
+		.cpu_dai_name = "iDisp2 Pin",
+		.codec_name = "ehdaudio0D2",
+		.codec_dai_name = "intel-hdmi-hifi2",
+		.platform_name = "0000:00:1f.3",
+		.dpcm_playback = 1,
+		.no_pcm = 1,
+	},
+	{
+		.name = "iDisp3",
+		.id = 3,
+		.cpu_dai_name = "iDisp3 Pin",
+		.codec_name = "ehdaudio0D2",
+		.codec_dai_name = "intel-hdmi-hifi3",
+		.platform_name = "0000:00:1f.3",
+		.dpcm_playback = 1,
+		.no_pcm = 1,
+	},
+};
+
+int skl_hda_hdmi_jack_init(struct snd_soc_card *card)
+{
+	struct skl_hda_private *ctx = snd_soc_card_get_drvdata(card);
+	struct skl_hda_hdmi_pcm *pcm;
+	struct snd_soc_codec *codec = NULL;
+	int err;
+	char jack_name[NAME_SIZE];
+
+	list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
+		codec = pcm->codec_dai->codec;
+		snprintf(jack_name, sizeof(jack_name),
+			"HDMI/DP, pcm=%d Jack", pcm->device);
+		err = snd_soc_card_jack_new(card, jack_name,
+					SND_JACK_AVOUT, &pcm->hdmi_jack,
+					NULL, 0);
+
+		if (err)
+			return err;
+
+		err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
+						&pcm->hdmi_jack);
+		if (err < 0)
+			return err;
+	}
+
+	if (!codec)
+		return -EINVAL;
+
+	return hdac_hdmi_jack_port_init(codec, &card->dapm);
+}
diff --git a/sound/soc/intel/boards/skl_hda_dsp_common.h b/sound/soc/intel/boards/skl_hda_dsp_common.h
new file mode 100644
index 0000000..c9cb66b
--- /dev/null
+++ b/sound/soc/intel/boards/skl_hda_dsp_common.h
@@ -0,0 +1,42 @@
+/*
+ * Intel Machine Driver for platform with HDA Codecs definitions
+ *
+ * Copyright (C) 2017, Intel Corporation. All rights reserved.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 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.
+ */
+
+#ifndef __SOUND_SOC_HDA_DSP_COMMON_H
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#define __SOUND_SOC_HDA_DSP_COMMON_H
+
+#define HDA_DSP_MAX_BE_DAI_LINKS 3
+
+struct skl_hda_hdmi_pcm {
+	struct list_head head;
+	struct snd_soc_dai *codec_dai;
+	struct snd_soc_jack hdmi_jack;
+	int device;
+};
+
+struct skl_hda_private {
+	struct list_head hdmi_pcm_list;
+	int pcm_count;
+};
+
+extern struct snd_soc_dai_link skl_hda_be_dai_links[HDA_DSP_MAX_BE_DAI_LINKS];
+int skl_hda_hdmi_jack_init(struct snd_soc_card *card);
+int skl_hda_hdmi_add_pcm(struct snd_soc_card *card, int device);
+
+#endif /* __SOUND_SOC_HDA_DSP_COMMON_H */
diff --git a/sound/soc/intel/boards/skl_hda_dsp_generic.c b/sound/soc/intel/boards/skl_hda_dsp_generic.c
new file mode 100644
index 0000000..2d2b901
--- /dev/null
+++ b/sound/soc/intel/boards/skl_hda_dsp_generic.c
@@ -0,0 +1,112 @@
+/*
+ * Intel Machine Driver for SKL/KBL platforms with HDA Codecs
+ *
+ * Copyright (C) 2017, Intel Corporation. All rights reserved.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 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/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include "../../codecs/hdac_hdmi.h"
+#include "../skylake/skl.h"
+#include "skl_hda_dsp_common.h"
+
+static const struct snd_soc_dapm_route skl_hda_map[] = {
+
+	{ "hifi3", NULL, "iDisp3 Tx"},
+	{ "iDisp3 Tx", NULL, "iDisp3_out"},
+	{ "hifi2", NULL, "iDisp2 Tx"},
+	{ "iDisp2 Tx", NULL, "iDisp2_out"},
+	{ "hifi1", NULL, "iDisp1 Tx"},
+	{ "iDisp1 Tx", NULL, "iDisp1_out"},
+
+};
+
+static int skl_hda_card_late_probe(struct snd_soc_card *card)
+{
+	return skl_hda_hdmi_jack_init(card);
+}
+
+static int
+skl_hda_add_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *link)
+{
+	struct skl_hda_private *ctx = snd_soc_card_get_drvdata(card);
+	int ret = 0;
+
+	dev_dbg(card->dev, "%s: dai link name - %s\n", __func__, link->name);
+	link->platform_name = "0000:00:1f.3";
+	link->nonatomic = 1;
+
+	if (strstr(link->name, "HDMI"))
+		ret = skl_hda_hdmi_add_pcm(card, ctx->pcm_count);
+	ctx->pcm_count++;
+
+	return ret;
+}
+
+static struct snd_soc_card hda_soc_card = {
+	.name = "skl_hda_card",
+	.owner = THIS_MODULE,
+	.dai_link = skl_hda_be_dai_links,
+	.num_links = ARRAY_SIZE(skl_hda_be_dai_links),
+	.dapm_routes = skl_hda_map,
+	.num_dapm_routes = ARRAY_SIZE(skl_hda_map),
+	.add_dai_link = skl_hda_add_dai_link,
+	.fully_routed = true,
+	.late_probe = skl_hda_card_late_probe,
+};
+
+static int skl_hda_audio_probe(struct platform_device *pdev)
+{
+	struct skl_hda_private *ctx;
+
+	dev_dbg(&pdev->dev, "%s: machine driver probe got called\n", __func__);
+
+	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC);
+	if (!ctx)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
+	ctx->pcm_count = ARRAY_SIZE(skl_hda_be_dai_links);
+
+	hda_soc_card.dev = &pdev->dev;
+	snd_soc_card_set_drvdata(&hda_soc_card, ctx);
+
+	return devm_snd_soc_register_card(&pdev->dev, &hda_soc_card);
+}
+
+static const struct platform_device_id skl_hda_board_ids[] = {
+	{ .name = "skl_hda_generic" },
+	{ }
+};
+
+static struct platform_driver skl_hda_audio = {
+	.probe = skl_hda_audio_probe,
+	.driver = {
+		.name = "skl_hda_generic",
+		.pm = &snd_soc_pm_ops,
+	},
+	.id_table = skl_hda_board_ids,
+};
+
+module_platform_driver(skl_hda_audio)
+
+/* Module information */
+MODULE_DESCRIPTION("SKL/KBL HDA Generic Machine driver");
+MODULE_AUTHOR("Rakesh Ughreja <rakesh.a.ughreja@intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:skl_hda_generic");
-- 
2.7.4

[RFC v2 02/11] ASoC: Intel: Skylake: Add entry in sst_acpi_mach for HDA codecs

[Rakesh Ughreja]

When no I2S based codecs are detected in the BIOS, check if there are
any HDA codecs present. If yes, load the corresponding machine driver.

TODO:
support for detecting the presence of HDA codec is not implemented.
it will be implemented in the next revision.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/intel/skylake/skl.c | 46 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 43 insertions(+), 3 deletions(-)

diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index 6fc2173..b99c1d8 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -442,6 +442,26 @@ static struct skl_ssp_clk skl_ssp_clks[] = {
 						{.name = "ssp5_sclkfs"},
 };
 
+static struct snd_soc_acpi_mach *skl_probe_hda_machine(
+					struct snd_soc_acpi_mach *machines)
+{
+
+	struct snd_soc_acpi_mach *mach;
+
+	/*
+	 * FIXME:
+	 * First check if there are any HDA codecs present on the system
+	 * then search the match table.
+	 * For now this function is not detecting the presence of any
+	 * HDA codecs.
+	 */
+	for (mach = machines; mach->id[0]; mach++) {
+		if (!strcmp(mach->id, "HDA_GEN"))
+			return mach;
+	}
+	return NULL;
+}
+
 static int skl_machine_device_register(struct skl *skl, void *driver_data)
 {
 	struct hdac_bus *bus = skl_to_bus(skl);
@@ -451,9 +471,14 @@ static int skl_machine_device_register(struct skl *skl, void *driver_data)
 
 	mach = snd_soc_acpi_find_machine(mach);
 	if (mach == NULL) {
-		dev_err(bus->dev, "No matching machine driver found\n");
-		return -ENODEV;
+		dev_dbg(bus->dev, "No matching I2S machine driver found\n");
+		mach = skl_probe_hda_machine(driver_data);
+		if (mach == NULL) {
+			dev_err(bus->dev, "No matching machine driver found\n");
+			return -ENODEV;
+		}
 	}
+
 	skl->fw_name = mach->fw_filename;
 
 	pdev = platform_device_alloc(mach->drv_name, -1);
@@ -1005,6 +1030,14 @@ static struct snd_soc_acpi_mach sst_skl_devdata[] = {
 		.quirk_data = &skl_codecs,
 		.pdata = &skl_dmic_data
 	},
+	{
+		.id = "HDA_GEN",
+		.drv_name = "skl_hda_generic",
+		.fw_filename = "intel/dsp_fw_release.bin",
+		.machine_quirk = NULL,
+		.quirk_data = NULL,
+		.pdata = &cnl_pdata,
+	},
 	{}
 };
 
@@ -1067,7 +1100,14 @@ static struct snd_soc_acpi_mach sst_kbl_devdata[] = {
 		.drv_name = "kbl_rt5663",
 		.fw_filename = "intel/dsp_fw_kbl.bin",
 	},
-
+	{
+		.id = "HDA_GEN",
+		.drv_name = "skl_hda_generic",
+		.fw_filename = "intel/dsp_fw_kbl.bin",
+		.machine_quirk = NULL,
+		.quirk_data = NULL,
+		.pdata = &cnl_pdata,
+	},
 	{}
 };
 
-- 
2.7.4

[RFC v2 03/11] ASoC: Intel: Skylake: add HDA BE DAIs

[Rakesh Ughreja]

Add support for HDA BE DAIs in SKL platform driver.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/intel/skylake/skl-pcm.c | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index 02cdb1c..6cd6640 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -956,21 +956,39 @@ static struct snd_soc_dai_driver skl_platform_dai[] = {
 	},
 },
 {
-	.name = "HD-Codec Pin",
+	.name = "Analog CPU DAI",
 	.ops = &skl_link_dai_ops,
 	.playback = {
-		.stream_name = "HD-Codec Tx",
-		.channels_min = HDA_STEREO,
+		.stream_name = "Analog CPU Playback",
+		.channels_min = HDA_MONO,
 		.channels_max = HDA_STEREO,
 		.rates = SNDRV_PCM_RATE_48000,
-		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 	},
 	.capture = {
-		.stream_name = "HD-Codec Rx",
-		.channels_min = HDA_STEREO,
+		.stream_name = "Analog CPU Capture",
+		.channels_min = HDA_MONO,
 		.channels_max = HDA_STEREO,
 		.rates = SNDRV_PCM_RATE_48000,
-		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
+	},
+},
+{
+	.name = "Digital CPU DAI",
+	.ops = &skl_link_dai_ops,
+	.playback = {
+		.stream_name = "Digital CPU Playback",
+		.channels_min = HDA_MONO,
+		.channels_max = HDA_STEREO,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
+	},
+	.capture = {
+		.stream_name = "Digital CPU Capture",
+		.channels_min = HDA_MONO,
+		.channels_max = HDA_STEREO,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 	},
 },
 };
-- 
2.7.4

[RFC v2 04/11] ASoC: Intel: Skylake: use hda_bus instead of hdac_bus

[Rakesh Ughreja]

This patch prepares SKL platform driver to make reuse of legacy HDA
codec drivers. It does following things.

use hda_bus instead of hdac_bus in the SKL platform driver to align
with the legacy controller driver.

modify snd_hdac_ext_bus_device_init definition to align with
snd_hdac_bus_device_init, used by legacy drivers.
Memory for hdac_device is allocated by the caller

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 include/sound/hdaudio_ext.h   |  3 ++-
 sound/hda/ext/hdac_ext_bus.c  |  9 ++-------
 sound/soc/intel/skylake/skl.c | 27 ++++++++++++++++++++++++++-
 sound/soc/intel/skylake/skl.h | 10 +++++++---
 4 files changed, 37 insertions(+), 12 deletions(-)

diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index 3c30247..c188b80 100644
--- a/include/sound/hdaudio_ext.h
+++ b/include/sound/hdaudio_ext.h
@@ -9,7 +9,8 @@ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev,
 		      const struct hdac_io_ops *io_ops);
 
 void snd_hdac_ext_bus_exit(struct hdac_bus *bus);
-int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr);
+int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr,
+						struct hdac_device *hdev);
 void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev);
 void snd_hdac_ext_bus_device_remove(struct hdac_bus *bus);
 
diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index 52f0776..e4bcb76 100644
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -135,16 +135,12 @@ static void default_release(struct device *dev)
  *
  * Returns zero for success or a negative error code.
  */
-int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr)
+int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr,
+					struct hdac_device *hdev)
 {
-	struct hdac_device *hdev = NULL;
 	char name[15];
 	int ret;
 
-	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
-	if (!hdev)
-		return -ENOMEM;
-
 	hdev->bus = bus;
 
 	snprintf(name, sizeof(name), "ehdaudio%dD%d", bus->idx, addr);
@@ -175,7 +171,6 @@ EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_init);
 void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev)
 {
 	snd_hdac_device_exit(hdev);
-	kfree(hdev);
 }
 EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit);
 
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index b99c1d8..c2e9c19 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -35,6 +35,7 @@
 #include "skl.h"
 #include "skl-sst-dsp.h"
 #include "skl-sst-ipc.h"
+#include "../../../pci/hda/hda_codec.h"
 
 static struct skl_machine_pdata skl_dmic_data;
 
@@ -617,6 +618,8 @@ static int probe_codec(struct hdac_bus *bus, int addr)
 	unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
 		(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
 	unsigned int res = -1;
+	struct skl *skl = bus_to_skl(bus);
+	struct hdac_device *hdev;
 
 	mutex_lock(&bus->cmd_mutex);
 	snd_hdac_bus_send_cmd(bus, cmd);
@@ -626,7 +629,19 @@ static int probe_codec(struct hdac_bus *bus, int addr)
 		return -EIO;
 	dev_dbg(bus->dev, "codec #%d probed OK\n", addr);
 
-	return snd_hdac_ext_bus_device_init(bus, addr);
+	/*
+	 * FIXME:
+	 * The legacy HDA controller driver allocates data structure
+	 * for hda_codec. Ideally it should allocate only hdac_device
+	 * so that it has no dependency on the data structure of the
+	 * codec driver. If legacy controller driver can be changed this
+	 * code change can be avoided.
+	 */
+	hdev = devm_kzalloc(&skl->pci->dev, sizeof(*hdev), GFP_KERNEL);
+	if (!hdev)
+		return -ENOMEM;
+
+	return snd_hdac_ext_bus_device_init(bus, addr, hdev);
 }
 
 /* Codec initialization */
@@ -751,6 +766,7 @@ static int skl_create(struct pci_dev *pci,
 {
 	struct skl *skl;
 	struct hdac_bus *bus;
+	struct hda_bus *hbus;
 
 	int err;
 
@@ -766,6 +782,7 @@ static int skl_create(struct pci_dev *pci,
 		return -ENOMEM;
 	}
 
+	hbus = skl_to_hbus(skl);
 	bus = skl_to_bus(skl);
 	snd_hdac_ext_bus_init(bus, &pci->dev, &bus_core_ops, io_ops);
 	bus->use_posbuf = 1;
@@ -773,6 +790,14 @@ static int skl_create(struct pci_dev *pci,
 	INIT_WORK(&skl->probe_work, skl_probe_work);
 	bus->bdl_pos_adj = 0;
 
+	/*
+	 * TODO: other parameters can be taken the way it is taken by
+	 * legacy HDA driver
+	 */
+	mutex_init(&hbus->prepare_mutex);
+	hbus->pci = pci;
+	hbus->mixer_assigned = -1;
+
 	*rskl = skl;
 
 	return 0;
diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h
index f3a48a4..777508f 100644
--- a/sound/soc/intel/skylake/skl.h
+++ b/sound/soc/intel/skylake/skl.h
@@ -26,6 +26,7 @@
 #include <sound/soc.h>
 #include "skl-nhlt.h"
 #include "skl-ssp-clk.h"
+#include "../../../pci/hda/hda_codec.h"
 
 #define SKL_SUSPEND_DELAY 2000
 
@@ -63,7 +64,7 @@ struct skl_fw_config {
 };
 
 struct skl {
-	struct hdac_bus hbus;
+	struct hda_bus hbus;
 	struct pci_dev *pci;
 
 	unsigned int init_done:1; /* delayed init status */
@@ -96,8 +97,11 @@ struct skl {
 	struct skl_fw_config cfg;
 };
 
-#define skl_to_bus(s)  (&(s)->hbus)
-#define bus_to_skl(bus) container_of(bus, struct skl, hbus)
+#define skl_to_bus(s)  (&(s)->hbus.core)
+#define bus_to_skl(bus) container_of(bus, struct skl, hbus.core)
+
+#define skl_to_hbus(s) (&(s)->hbus)
+#define hbus_to_skl(hbus) container_of(hbus, struct skl, hbus)
 
 /* to pass dai dma data */
 struct skl_dma_params {
-- 
2.7.4

[RFC v2 05/11] ALSA: hda - make some of the functions externally visible

[Rakesh Ughreja]

Mark some functions with EXPORT_SYMBOL_GPL so that it can be called by
other kernel modules. These APIs would be called by ASoC based HDA codec
driver which will be added in the later patches.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/pci/hda/hda_codec.c | 9 +++++++--
 sound/pci/hda/hda_codec.h | 2 ++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index e018ecb..085fd9e 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2903,7 +2903,7 @@ static void hda_call_codec_resume(struct hda_codec *codec)
 	atomic_dec(&codec->core.in_pm);
 }
 
-static int hda_codec_runtime_suspend(struct device *dev)
+int hda_codec_runtime_suspend(struct device *dev)
 {
 	struct hda_codec *codec = dev_to_hda_codec(dev);
 	struct hda_pcm *pcm;
@@ -2919,8 +2919,9 @@ static int hda_codec_runtime_suspend(struct device *dev)
 	snd_hdac_link_power(&codec->core, false);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(hda_codec_runtime_suspend);
 
-static int hda_codec_runtime_resume(struct device *dev)
+int hda_codec_runtime_resume(struct device *dev)
 {
 	struct hda_codec *codec = dev_to_hda_codec(dev);
 
@@ -2930,6 +2931,7 @@ static int hda_codec_runtime_resume(struct device *dev)
 	pm_runtime_mark_last_busy(dev);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(hda_codec_runtime_resume);
 #endif /* CONFIG_PM */
 
 /* referred in hda_bind.c */
@@ -3005,6 +3007,7 @@ int snd_hda_codec_build_controls(struct hda_codec *codec)
 	sync_power_up_states(codec);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(snd_hda_codec_build_controls);
 
 /*
  * PCM stuff
@@ -3210,6 +3213,7 @@ int snd_hda_codec_parse_pcms(struct hda_codec *codec)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(snd_hda_codec_parse_pcms);
 
 /* assign all PCMs of the given codec */
 int snd_hda_codec_build_pcms(struct hda_codec *codec)
@@ -3246,6 +3250,7 @@ int snd_hda_codec_build_pcms(struct hda_codec *codec)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(snd_hda_codec_build_pcms);
 
 /**
  * snd_hda_add_new_ctls - create controls from the array
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 681c360..d3099db 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -497,6 +497,8 @@ int hda_call_check_power_status(struct hda_codec *codec, hda_nid_t nid)
 #ifdef CONFIG_PM
 void snd_hda_set_power_save(struct hda_bus *bus, int delay);
 void snd_hda_update_power_acct(struct hda_codec *codec);
+int hda_codec_runtime_suspend(struct device *dev);
+int hda_codec_runtime_resume(struct device *dev);
 #else
 static inline void snd_hda_set_power_save(struct hda_bus *bus, int delay) {}
 #endif
-- 
2.7.4

[RFC v2 06/11] ASoC: hdac_hda: add ASoC based HDA codec driver

[Rakesh Ughreja]

This patch adds ASoC based HDA codec driver that can be used with
all Intel platforms.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/codecs/Kconfig      |  6 +++
 sound/soc/codecs/Makefile     |  2 +
 sound/soc/codecs/hdac_hda.c   | 92 +++++++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/hdac_hda.h   | 26 ++++++++++++
 sound/soc/intel/skylake/skl.c | 10 ++++-
 5 files changed, 134 insertions(+), 2 deletions(-)
 create mode 100644 sound/soc/codecs/hdac_hda.c
 create mode 100644 sound/soc/codecs/hdac_hda.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index ba5de07..1d41d11 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -79,6 +79,7 @@ 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
@@ -581,6 +582,11 @@ config SND_SOC_HDAC_HDMI
 	select SND_PCM_ELD
 	select HDMI
 
+config SND_SOC_HDAC_HDA
+	tristate
+	select SND_HDA_EXT_CORE
+	select SND_PCM_ELD
+
 config SND_SOC_ICS43432
 	tristate
 
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 0977349..dd5f90f 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -73,6 +73,7 @@ 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
@@ -317,6 +318,7 @@ 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..0a80fe8
--- /dev/null
+++ b/sound/soc/codecs/hdac_hda.c
@@ -0,0 +1,92 @@
+/*
+ *  hdac_hda.c - ASoc HDA-HDA codec driver for Intel platforms
+ *
+ *  Copyright (C) 2015-2017 Intel Corp
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  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/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"
+
+static int hdac_hda_dev_probe(struct hdac_device *hdev)
+{
+	struct hdac_ext_link *hlink = NULL;
+	struct hdac_hda_priv *hda_pvt;
+	int ret;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	/* 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;
+
+	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)
+{
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+	return 0;
+}
+
+#define hdac_hda_runtime_suspend NULL
+#define hdac_hda_runtime_resume NULL
+
+static const struct dev_pm_ops hdac_hda_pm = {
+	SET_RUNTIME_PM_OPS(hdac_hda_runtime_suspend,
+				hdac_hda_runtime_resume, NULL)
+};
+
+int __hdac_hda_codec_driver_register(struct hdac_driver *drv,
+	const char *name, struct module *owner)
+{
+	drv->driver.name = name;
+	drv->driver.pm = &hdac_hda_pm;
+
+	drv->probe = hdac_hda_dev_probe;
+	drv->remove = hdac_hda_dev_remove;
+
+	return snd_hda_ext_driver_register(drv);
+}
+EXPORT_SYMBOL_GPL(__hdac_hda_codec_driver_register);
+
+void hdac_hda_codec_driver_unregister(struct hdac_driver *drv)
+{
+	snd_hda_ext_driver_unregister(drv);
+}
+EXPORT_SYMBOL_GPL(hdac_hda_codec_driver_unregister);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ASoC HDA codec driver");
+MODULE_AUTHOR("Rakesh Ughreja<rakesh.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..baecbb2
--- /dev/null
+++ b/sound/soc/codecs/hdac_hda.h
@@ -0,0 +1,26 @@
+#ifndef __HDAC_HDA_H__
+#define __HDAC_HDA_H__
+
+struct hdac_hda_priv {
+	struct hda_codec codec;
+	struct hda_bus *hbus;
+	int stream_tag;
+
+	struct snd_soc_codec *scodec;
+};
+
+#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)
+
+int __hdac_hda_codec_driver_register(struct hdac_driver *drv,
+				const char *name, struct module *owner);
+#define hdac_hda_codec_driver_register(drv) \
+	__hdac_hda_codec_driver_register(drv, KBUILD_MODNAME, THIS_MODULE)
+void hdac_hda_codec_driver_unregister(struct hdac_driver *drv);
+
+#define module_hdac_hda_codec_driver(drv) \
+	module_driver(drv, hdac_hda_codec_driver_register, \
+					hdac_hda_codec_driver_unregister)
+
+#endif /* __HDAC_HDA_H__ */
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
index c2e9c19..a56a916 100644
--- a/sound/soc/intel/skylake/skl.c
+++ b/sound/soc/intel/skylake/skl.c
@@ -36,6 +36,7 @@
 #include "skl-sst-dsp.h"
 #include "skl-sst-ipc.h"
 #include "../../../pci/hda/hda_codec.h"
+#include "../../../soc/codecs/hdac_hda.h"
 
 static struct skl_machine_pdata skl_dmic_data;
 
@@ -619,6 +620,7 @@ static int probe_codec(struct hdac_bus *bus, int addr)
 		(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
 	unsigned int res = -1;
 	struct skl *skl = bus_to_skl(bus);
+	struct hdac_hda_priv *hda_codec;
 	struct hdac_device *hdev;
 
 	mutex_lock(&bus->cmd_mutex);
@@ -637,10 +639,14 @@ static int probe_codec(struct hdac_bus *bus, int addr)
 	 * codec driver. If legacy controller driver can be changed this
 	 * code change can be avoided.
 	 */
-	hdev = devm_kzalloc(&skl->pci->dev, sizeof(*hdev), GFP_KERNEL);
-	if (!hdev)
+	hda_codec = devm_kzalloc(&skl->pci->dev, sizeof(*hda_codec),
+								GFP_KERNEL);
+	if (!hda_codec)
 		return -ENOMEM;
 
+	hda_codec->hbus = skl_to_hbus(skl);
+	hdev = &hda_codec->codec.core;
+
 	return snd_hdac_ext_bus_device_init(bus, addr, hdev);
 }
 
-- 
2.7.4

[RFC v2 07/11] ALSA: hda: add new API snd_hda_asoc_codec_new for ASoC codec drivers

[Rakesh Ughreja]

Add API snd_hda_asoc_codec_new, to be called by generic ASoC codec
driver to create the hda_codec instance.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/pci/hda/hda_codec.c | 100 ++++++++++++++++++++++++++++++++++++++++++++++
 sound/pci/hda/hda_codec.h |   2 +
 2 files changed, 102 insertions(+)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 085fd9e..215b04d 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -965,6 +965,106 @@ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
 }
 EXPORT_SYMBOL_GPL(snd_hda_codec_new);
 
+/*
+ * FIXME:
+ * This function is very simillar to snd_hda_codec_new, but requires
+ * some special change for ASoC based codec drivers.
+ * Both functions can be combined into one.
+ */
+int snd_hda_asoc_codec_new(struct hda_bus *bus, struct snd_card *card,
+			unsigned int codec_addr, struct hda_codec **codecp)
+{
+	struct hda_codec *codec = NULL;
+	hda_nid_t fg;
+	int err;
+	static struct snd_device_ops dev_ops = {
+		.dev_register = snd_hda_codec_dev_register,
+		.dev_disconnect = snd_hda_codec_dev_disconnect,
+		.dev_free = snd_hda_codec_dev_free,
+	};
+	struct snd_device *snd_dev;
+
+	if (snd_BUG_ON(!codecp))
+		return -EINVAL;
+	if (snd_BUG_ON(!bus))
+		return -EINVAL;
+	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
+		return -EINVAL;
+
+	codec = *codecp;
+
+	codec->core.exec_verb = codec_exec_verb;
+	codec->bus = bus;
+	codec->card = card;
+	codec->addr = codec_addr;
+	mutex_init(&codec->spdif_mutex);
+	mutex_init(&codec->control_mutex);
+	snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32);
+	snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
+	snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
+	snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
+	snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
+	snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
+	snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
+	snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
+	INIT_LIST_HEAD(&codec->conn_list);
+	INIT_LIST_HEAD(&codec->pcm_list_head);
+
+	INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
+	codec->depop_delay = -1;
+	codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
+
+#ifdef CONFIG_PM
+	codec->power_jiffies = jiffies;
+#endif
+
+	if (codec->bus->modelname) {
+		codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
+		if (!codec->modelname) {
+			err = -ENOMEM;
+			goto error;
+		}
+	}
+
+	fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
+	err = read_widget_caps(codec, fg);
+	if (err < 0)
+		goto error;
+
+	err = read_pin_defaults(codec);
+	if (err < 0)
+		goto error;
+
+	/* power-up all before initialization */
+	hda_set_power_state(codec, AC_PWRST_D0);
+
+	snd_hda_codec_proc_new(codec);
+
+	snd_hda_create_hwdep(codec);
+
+	err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
+	if (err < 0)
+		goto error;
+
+	list_for_each_entry(snd_dev, &card->devices, list) {
+		if (snd_dev->type == SNDRV_DEV_CODEC) {
+			void *device_data = snd_dev->device_data;
+
+			err = snd_device_register(card, device_data);
+			if (err < 0)
+				dev_err(bus->core.dev,
+				"device_register_all failed err = %d\n", err);
+		}
+	}
+
+	return 0;
+
+error:
+	put_device(hda_codec_dev(codec));
+	return err;
+}
+EXPORT_SYMBOL_GPL(snd_hda_asoc_codec_new);
+
 /**
  * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults
  * @codec: the HDA codec
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index d3099db..d863092 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -307,6 +307,8 @@ struct hda_codec {
  */
 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
 		      unsigned int codec_addr, struct hda_codec **codecp);
+int snd_hda_asoc_codec_new(struct hda_bus *bus, struct snd_card *card,
+		      unsigned int codec_addr, struct hda_codec **codecp);
 int snd_hda_codec_configure(struct hda_codec *codec);
 int snd_hda_codec_update_widgets(struct hda_codec *codec);
 
-- 
2.7.4

[RFC v2 08/11] ASoC: hdac_hda: add DAI, widgets and related ops

[Rakesh Ughreja]

Add support for widgets, routes, DAI and related handlers.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/codecs/hdac_hda.c | 487 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 487 insertions(+)

diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
index 0a80fe8..78730b8 100644
--- a/sound/soc/codecs/hdac_hda.c
+++ b/sound/soc/codecs/hdac_hda.c
@@ -28,6 +28,484 @@
 #include "../../pci/hda/hda_codec.h"
 #include "hdac_hda.h"
 
+#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_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *hparams, 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_params = hdac_hda_dai_hw_params,
+	.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[] = {
+{
+	.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,
+	},
+},
+{
+	.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_codec_match(struct hdac_device *hdev, struct hdac_driver *drv)
+{
+	struct hda_codec *codec = hdac_to_hda_codec(hdev);
+	const struct hda_device_id *list;
+	u32 id, rev_id;
+
+	if (!codec) {
+		dev_err(&hdev->dev, "%p\n", codec);
+		return 0;
+	}
+
+	/* check probe_id instead of vendor_id if set */
+	id = codec->probe_id ? codec->probe_id : codec->core.vendor_id;
+	rev_id = codec->core.revision_id;
+
+	dev_dbg(&hdev->dev, "%s: probe_id=0x%x and vendor_id=0x%x\n",
+			__func__, codec->probe_id, codec->core.vendor_id);
+
+	for (list = drv->id_table; list->vendor_id; list++) {
+		if (list->vendor_id == id &&
+			(!list->rev_id || list->rev_id == rev_id)) {
+			codec->preset = list;
+			dev_dbg(&hdev->dev, "found patch file %x\n", id);
+			return 1;
+		}
+	}
+	return 0;
+}
+
+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_device *hdev = &hda_pvt->codec.core;
+
+	hda_pvt->stream_tag = tx_mask;
+	dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__,
+						hda_pvt->stream_tag);
+	return 0;
+}
+
+static int hdac_hda_dai_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
+{
+	struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai);
+	struct hdac_device *hdev = &hda_pvt->codec.core;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	/*
+	 * TODO:
+	 * verify if the parameters are supported by the codec
+	 */
+	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 hdac_device *hdev = &hda_pvt->codec.core;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct hda_pcm_stream *hda_stream;
+	struct hda_pcm *pcm;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+	if (pcm == NULL)
+		return -EINVAL;
+
+	dev_dbg(&hdev->dev, "pcm = %s: rate=%d ch=%d fmt=%d\n", pcm->name,
+		runtime->rate, runtime->channels, runtime->format);
+
+	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)
+{
+	int ret = 0;
+	struct hdac_hda_priv *hda_pvt = snd_soc_dai_get_drvdata(dai);
+	struct hdac_device *hdev = &hda_pvt->codec.core;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct hda_pcm_stream *hda_stream;
+	unsigned int format_val;
+	struct hda_pcm *pcm;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+	if (pcm == NULL)
+		return -EINVAL;
+
+	dev_dbg(&hdev->dev, "pcm = %s: rate=%d ch=%d fmt=%d\n", pcm->name,
+		runtime->rate, runtime->channels, runtime->format);
+
+	hda_stream = &pcm->stream[substream->stream];
+
+	dev_dbg(&hdev->dev, "fmt=0x%llx rate=0x%x maxbps=%d\n",
+		hda_stream->formats, hda_stream->rates, hda_stream->maxbps);
+
+	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->stream_tag, format_val, substream);
+	if (ret < 0) {
+		dev_err(&hdev->dev, "codec prepare failed %d\n", ret);
+		return ret;
+	}
+
+	dev_dbg(&hdev->dev, "%s: exit\n", __func__);
+	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 hdac_device *hdev = &hda_pvt->codec.core;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct hda_pcm *pcm;
+	struct hda_pcm_stream *hda_stream;
+	int ret = 0;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+	if (pcm == NULL)
+		return -EINVAL;
+
+	dev_dbg(&hdev->dev, "pcm = %s: rate=%d ch=%d fmt=%d\n", pcm->name,
+		runtime->rate, runtime->channels, runtime->format);
+
+	hda_stream = &pcm->stream[substream->stream];
+
+	snd_hda_codec_pcm_get(pcm);
+
+	if (hda_stream->ops.open)
+		ret = hda_stream->ops.open(hda_stream, &hda_pvt->codec,
+								substream);
+	else
+		ret = -ENODEV;
+
+	dev_dbg(&hdev->dev, "%s: exit=%d\n", __func__, ret);
+
+	return 0;
+}
+
+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 hdac_device *hdev = &hda_pvt->codec.core;
+	struct hda_pcm *pcm;
+	struct hda_pcm_stream *hda_stream;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
+	if (pcm == NULL)
+		return;
+
+	hda_stream = &pcm->stream[substream->stream];
+
+	if (hda_stream->ops.open)
+		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_pcm *cpcm;
+	struct hda_codec *hcodec = &hda_pvt->codec;
+	const char *pcm_name;
+
+	if (strpbrk(dai->name, "Analog"))
+		pcm_name = "Analog";
+	else
+		pcm_name = "Digital";
+
+	dev_dbg(&hcodec->core.dev, "DAI %s\n", pcm_name);
+
+	list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
+		dev_dbg(&hcodec->core.dev, "PCM %s\n", cpcm->name);
+		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 hdac_device *hdev = &hda_pvt->codec.core;
+	struct hdac_ext_link *hlink = NULL;
+	struct hda_codec *hcodec = &hda_pvt->codec;
+	struct snd_soc_dapm_context *dapm =
+			snd_soc_component_get_dapm(&codec->component);
+	int ret, i = 0;
+	u16 codec_mask;
+	hda_codec_patch_t patch;
+	struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver);
+
+	dev_dbg(&hdev->dev, "%s: Entry in_pm=%d pm_usage=%d\n", __func__,
+			hdev->in_pm.counter,
+			hdev->dev.power.usage_count.counter);
+
+	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);
+
+	dev_dbg(&hdev->dev, "before card created in_pm=%d pm_usage=%d\n",
+			hdev->in_pm.counter,
+			hdev->dev.power.usage_count.counter);
+
+	ret = snd_hda_asoc_codec_new(hda_pvt->hbus,
+			codec->component.card->snd_card, hdev->addr,
+			&hcodec);
+	if (ret < 0) {
+		dev_err(codec->dev, "%s: failed to create hda codec %d\n",
+					__func__, 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);
+
+	hda_pvt->hbus->card = dapm->card->snd_card;
+
+	dev_dbg(&hdev->dev, "after card created in_pm=%d pm_usage=%d\n",
+			hdev->in_pm.counter,
+			hdev->dev.power.usage_count.counter);
+
+	ret = hdac_codec_match(hdev, hdrv);
+	if (ret < 1) {
+		dev_err(codec->dev, "no match found for the codec\n");
+		return ret;
+	}
+
+	patch = (hda_codec_patch_t)hcodec->preset->driver_data;
+	if (patch) {
+		ret = patch(hcodec);
+		if (ret < 0) {
+			dev_err(codec->dev, "no match found for the codec\n");
+			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, "unable to set name %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);
+
+	dev_dbg(&hdev->dev, "%s: exit\n", __func__);
+
+	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;
+
+	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+
+	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;
@@ -48,6 +526,14 @@ static int hdac_hda_dev_probe(struct hdac_device *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);
 
@@ -57,6 +543,7 @@ static int hdac_hda_dev_probe(struct hdac_device *hdev)
 static int hdac_hda_dev_remove(struct hdac_device *hdev)
 {
 	dev_dbg(&hdev->dev, "%s: entry\n", __func__);
+	snd_soc_unregister_codec(&hdev->dev);
 	return 0;
 }
 
-- 
2.7.4

[RFC v2 09/11] ASoC: hdac_hda: add runtime PM support

[Rakesh Ughreja]

Add power management support.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/codecs/hdac_hda.c | 49 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
index 78730b8..1db467b2 100644
--- a/sound/soc/codecs/hdac_hda.c
+++ b/sound/soc/codecs/hdac_hda.c
@@ -547,8 +547,57 @@ static int hdac_hda_dev_remove(struct hdac_device *hdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int hdac_hda_runtime_suspend(struct device *dev)
+{
+	struct hdac_device *hdac = dev_to_hdac_dev(dev);
+	struct hdac_bus *bus = hdac->bus;
+	struct hdac_ext_link *hlink = NULL;
+
+	dev_dbg(dev, "%s: entry\n", __func__);
+
+	dev_dbg(dev, "calling legacy codec suspend\n");
+	hda_codec_runtime_suspend(dev);
+	dev_dbg(dev, "legacy codec suspended\n");
+
+	hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
+	if (!hlink) {
+		dev_err(dev, "hdac link not found\n");
+		return -EIO;
+	}
+	snd_hdac_ext_bus_link_put(bus, hlink);
+	return 0;
+}
+
+static int hdac_hda_runtime_resume(struct device *dev)
+{
+	struct hdac_device *hdac = dev_to_hdac_dev(dev);
+	struct hdac_bus *bus = hdac->bus;
+	struct hdac_ext_link *hlink = NULL;
+
+	dev_dbg(dev, "%s: entry\n", __func__);
+
+	/* controller may not have been initialized for the first time */
+	if (!bus)
+		return 0;
+
+	hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
+	if (!hlink) {
+		dev_err(dev, "hdac link not found\n");
+		return -EIO;
+	}
+	snd_hdac_ext_bus_link_get(bus, hlink);
+
+	dev_dbg(dev, "calling legacy codec resume\n");
+	hda_codec_runtime_resume(dev);
+	dev_dbg(dev, "%s: exit\n", __func__);
+
+	return 0;
+}
+#else
 #define hdac_hda_runtime_suspend NULL
 #define hdac_hda_runtime_resume NULL
+#endif
 
 static const struct dev_pm_ops hdac_hda_pm = {
 	SET_RUNTIME_PM_OPS(hdac_hda_runtime_suspend,
-- 
2.7.4

[RFC v2 10/11] ASoC: patch_realtek: add ASoC based Realtek HDA codec driver patch

[Rakesh Ughreja]

This patch adds support for ASoC HDA codec driver for realtek
codecs.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/pci/hda/patch_realtek.c    |  3 ++-
 sound/soc/codecs/Kconfig         |  6 +++++
 sound/soc/codecs/Makefile        |  2 ++
 sound/soc/codecs/patch_realtek.c | 48 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 58 insertions(+), 1 deletion(-)
 create mode 100644 sound/soc/codecs/patch_realtek.c

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 921a10e..88a965c 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -7903,7 +7903,7 @@ static int patch_alc680(struct hda_codec *codec)
 /*
  * patch entries
  */
-static const struct hda_device_id snd_hda_id_realtek[] = {
+const struct hda_device_id snd_hda_id_realtek[] = {
 	HDA_CODEC_ENTRY(0x10ec0215, "ALC215", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0221, "ALC221", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0225, "ALC225", patch_alc269),
@@ -7974,6 +7974,7 @@ static const struct hda_device_id snd_hda_id_realtek[] = {
 	HDA_CODEC_ENTRY(0x10ec1220, "ALC1220", patch_alc882),
 	{} /* terminator */
 };
+EXPORT_SYMBOL_GPL(snd_hda_id_realtek);
 MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_realtek);
 
 MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 1d41d11..97fd997 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -80,6 +80,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_GTM601
 	select SND_SOC_HDAC_HDMI
 	select SND_SOC_HDAC_HDA
+	select SND_SOC_HDA_REALTEK
 	select SND_SOC_ICS43432
 	select SND_SOC_INNO_RK3036
 	select SND_SOC_ISABELLE if I2C
@@ -587,6 +588,11 @@ config SND_SOC_HDAC_HDA
 	select SND_HDA_EXT_CORE
 	select SND_PCM_ELD
 
+config SND_SOC_HDA_REALTEK
+	select SND_HDA_CODEC_REALTEK
+	select SND_SOC_HDAC_HDA
+	tristate "Realtek ASoC HDA Codec Driver patch"
+
 config SND_SOC_ICS43432
 	tristate
 
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index dd5f90f..158ee89 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -102,6 +102,7 @@ snd-soc-nau8810-objs := nau8810.o
 snd-soc-nau8824-objs := nau8824.o
 snd-soc-nau8825-objs := nau8825.o
 snd-soc-hdmi-codec-objs := hdmi-codec.o
+snd-soc-patch_realtek-objs := patch_realtek.o
 snd-soc-pcm1681-objs := pcm1681.o
 snd-soc-pcm179x-codec-objs := pcm179x.o
 snd-soc-pcm179x-i2c-objs := pcm179x-i2c.o
@@ -319,6 +320,7 @@ 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-$(CONFIG_SND_SOC_HDA_REALTEK)	+= snd-soc-patch_realtek.o
 obj-$(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/patch_realtek.c b/sound/soc/codecs/patch_realtek.c
new file mode 100644
index 0000000..80772c3
--- /dev/null
+++ b/sound/soc/codecs/patch_realtek.c
@@ -0,0 +1,48 @@
+/*
+ * Universal Interface for Intel High Definition Audio Codec
+ *
+ * ASoC HD audio interface patch for Realtek ALC codecs
+ *
+ * Copyright (c) 2004 Kailang Yang <kailang@realtek.com.tw>
+ *                    PeiSen Hou <pshou@realtek.com.tw>
+ *                    Takashi Iwai <tiwai@suse.de>
+ *                    Jonathan Woithe <jwoithe@just42.net>
+ *
+ *  This driver is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This driver 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.
+ */
+
+/*
+ * license header and copyright is copy/pasted from the legacy realtek HDA
+ * driver, is that fine or I need to create a new one?
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/hdaudio_ext.h>
+#include "../../pci/hda/hda_codec.h"
+#include "hdac_hda.h"
+
+/*
+ * Is snd_hda_id_realtek okay to keep it here or better to move into
+ * hda_codec.h file?
+ * Is it okay to define this as extern ?
+ */
+extern struct hda_device_id snd_hda_id_realtek[];
+
+static struct hdac_driver realtek_driver = {
+	.id_table = snd_hda_id_realtek,
+};
+
+module_hdac_hda_codec_driver(realtek_driver);
+
+MODULE_DESCRIPTION("Realtek ASoC HDA Codec driver");
+MODULE_LICENSE("GPL");
-- 
2.7.4

[RFC v2 11/11] ASoC: Intel: Boards: add support for HDA codecs

[Rakesh Ughreja]

Add support for HDA codecs. add required widgets, controls, routes
and dai links for the same.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/soc/intel/boards/Kconfig               |  1 +
 sound/soc/intel/boards/skl_hda_dsp_common.c  | 43 ++++++++++++++++++++++++++++
 sound/soc/intel/boards/skl_hda_dsp_common.h  |  2 +-
 sound/soc/intel/boards/skl_hda_dsp_generic.c | 29 +++++++++++++++++++
 4 files changed, 74 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/boards/Kconfig b/sound/soc/intel/boards/Kconfig
index e01137d..c146297f 100644
--- a/sound/soc/intel/boards/Kconfig
+++ b/sound/soc/intel/boards/Kconfig
@@ -267,6 +267,7 @@ config SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
         select SND_SOC_INTEL_SST
         depends on SND_SOC_INTEL_SKYLAKE
         select SND_SOC_HDAC_HDMI
+        select SND_SOC_HDAC_HDA
         help
           This adds support for ASoC Onboard Codec HDA machine driver. This will
           create an alsa sound card for HDA Codecs.
diff --git a/sound/soc/intel/boards/skl_hda_dsp_common.c b/sound/soc/intel/boards/skl_hda_dsp_common.c
index 5558334..c575d8e 100644
--- a/sound/soc/intel/boards/skl_hda_dsp_common.c
+++ b/sound/soc/intel/boards/skl_hda_dsp_common.c
@@ -62,6 +62,24 @@ int skl_hda_hdmi_add_pcm(struct snd_soc_card *card, int device)
 	return 0;
 }
 
+static int skl_hda_link_fixup(struct snd_soc_pcm_runtime *rtd,
+					struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *rate = hw_param_interval(params,
+						SNDRV_PCM_HW_PARAM_RATE);
+	struct snd_interval *channels = hw_param_interval(params,
+						SNDRV_PCM_HW_PARAM_CHANNELS);
+	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+
+	/* The output is 48KHz, stereo, 16bits */
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+
+	snd_mask_none(fmt);
+	snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE);
+	return 0;
+}
+
 /* skl_hda_digital audio interface glue - connects codec <--> CPU */
 struct snd_soc_dai_link skl_hda_be_dai_links[HDA_DSP_MAX_BE_DAI_LINKS] = {
 
@@ -96,6 +114,31 @@ struct snd_soc_dai_link skl_hda_be_dai_links[HDA_DSP_MAX_BE_DAI_LINKS] = {
 		.dpcm_playback = 1,
 		.no_pcm = 1,
 	},
+	{
+		.name = "Analog Playback and Capture",
+		.id = 4,
+		.cpu_dai_name = "Analog CPU DAI",
+		.codec_name = "ehdaudio0D0",
+		.codec_dai_name = "Analog Codec DAI",
+		.platform_name = "0000:00:1f.3",
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.init = NULL,
+		.no_pcm = 1,
+		.be_hw_params_fixup = skl_hda_link_fixup,
+	},
+	{
+		.name = "Digital Playback and Capture",
+		.id = 5,
+		.cpu_dai_name = "Digital CPU DAI",
+		.codec_name = "ehdaudio0D0",
+		.codec_dai_name = "Digital Codec DAI",
+		.platform_name = "0000:00:1f.3",
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.init = NULL,
+		.no_pcm = 1,
+	},
 };
 
 int skl_hda_hdmi_jack_init(struct snd_soc_card *card)
diff --git a/sound/soc/intel/boards/skl_hda_dsp_common.h b/sound/soc/intel/boards/skl_hda_dsp_common.h
index c9cb66b..463938a 100644
--- a/sound/soc/intel/boards/skl_hda_dsp_common.h
+++ b/sound/soc/intel/boards/skl_hda_dsp_common.h
@@ -21,7 +21,7 @@
 #include <sound/jack.h>
 #define __SOUND_SOC_HDA_DSP_COMMON_H
 
-#define HDA_DSP_MAX_BE_DAI_LINKS 3
+#define HDA_DSP_MAX_BE_DAI_LINKS 5
 
 struct skl_hda_hdmi_pcm {
 	struct list_head head;
diff --git a/sound/soc/intel/boards/skl_hda_dsp_generic.c b/sound/soc/intel/boards/skl_hda_dsp_generic.c
index 2d2b901..e0d7e12 100644
--- a/sound/soc/intel/boards/skl_hda_dsp_generic.c
+++ b/sound/soc/intel/boards/skl_hda_dsp_generic.c
@@ -25,8 +25,33 @@
 #include "../skylake/skl.h"
 #include "skl_hda_dsp_common.h"
 
+static const struct snd_kcontrol_new skl_hda_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static const struct snd_soc_dapm_widget skl_hda_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_SPK("Codec Speaker", NULL),
+	SND_SOC_DAPM_MIC("Codec Mic", NULL),
+};
+
 static const struct snd_soc_dapm_route skl_hda_map[] = {
 
+	/* HP jack connectors - unknown if we have jack detection */
+	{ "Headphone", NULL, "Codec Output Pin1" },
+	{ "Codec Speaker", NULL, "Codec Output Pin2" },
+	{ "Codec Input Pin2", NULL, "Codec Mic" },
+	{ "Codec Input Pin1", NULL, "Headset Mic" },
+
+	/* CODEC BE connections */
+	{ "Analog Codec Playback", NULL, "Analog CPU Playback" },
+	{ "Analog CPU Playback", NULL, "codec0_out" },
+
+	{ "codec0_in", NULL, "Analog CPU Capture" },
+	{ "Analog CPU Capture", NULL, "Analog Codec Capture" },
+
 	{ "hifi3", NULL, "iDisp3 Tx"},
 	{ "iDisp3 Tx", NULL, "iDisp3_out"},
 	{ "hifi2", NULL, "iDisp2 Tx"},
@@ -63,6 +88,10 @@ static struct snd_soc_card hda_soc_card = {
 	.owner = THIS_MODULE,
 	.dai_link = skl_hda_be_dai_links,
 	.num_links = ARRAY_SIZE(skl_hda_be_dai_links),
+	.controls = skl_hda_controls,
+	.num_controls = ARRAY_SIZE(skl_hda_controls),
+	.dapm_widgets = skl_hda_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(skl_hda_widgets),
 	.dapm_routes = skl_hda_map,
 	.num_dapm_routes = ARRAY_SIZE(skl_hda_map),
 	.add_dai_link = skl_hda_add_dai_link,
-- 
2.7.4

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Takashi Iwai]

On Mon, 11 Dec 2017 11:52:52 +0100,
Rakesh Ughreja wrote:
> 
> Many Intel platforms (SKL, KBL) etc. in the market supports enhanced 
> audio capabilities which also includes DSP processing. This patch carry
> forwards the works that is done in the previous series to enable HD Audio
> codecs on such platforms.
> 
> This patch series adds ASoC HDA codec driver for Intel platforms. It is
> written by reusing the legacy HDA ALSA codec driver. Intention is to
> maximize the reuse and minimize the changes in the legacy HDA codec driver.
> 
> I would like to receive feedback before proceeding further on this
> direction.
> 
> INFO:
> - This series is tested on KBL based product (Dell XPS 13).
> - Basic playback is working with headset and speakers.
> - HDMI playback is working.
> - Capture operation is not tested.
> - More platforms and use cases coverage can be added once we have basic
>   agreement in terms of the overall approach.
> 
> Changes in v2:
> - Using Topology framework to create DAIs and DAI Links
> - Moved most commonly used functions into a separate file for machine driver
> - Implemented separate Realtek ASoC HDA Driver driver for Realtek HDA codecs.
>   It is just a driver registration wrapper which reuses the legacy HDA codec
>   driver. This allows the removes the limitation that was present in v1.
> - Implemented the review feedback.

Looking through the patchset quickly, I have a mixed feeling with it.
I see you're trying to get it working with minimal changes, which is
good in one side.  OTOH, it is unacceptably messy, in special, because
the device creation and registration phases are mixed up.

And exporting each codec table doesn't look nice.  We need to find a
better way...


thanks,

Takashi

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Ughreja, Rakesh A]

>-----Original Message-----
>From: Takashi Iwai [mailto:tiwai@suse.de]
>Sent: Monday, December 11, 2017 4:53 PM
>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>Cc: alsa-devel@alsa-project.org; broonie@kernel.org;
>liam.r.girdwood@linux.intel.com; pierre-louis.bossart@linux.intel.com; Koul, Vinod
><vinod.koul@intel.com>; Patches Audio <patches.audio@intel.com>
>Subject: Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms
>(Series2)
>
>On Mon, 11 Dec 2017 11:52:52 +0100,
>Rakesh Ughreja wrote:
>>
>> Many Intel platforms (SKL, KBL) etc. in the market supports enhanced
>> audio capabilities which also includes DSP processing. This patch carry
>> forwards the works that is done in the previous series to enable HD Audio
>> codecs on such platforms.
>>
>> This patch series adds ASoC HDA codec driver for Intel platforms. It is
>> written by reusing the legacy HDA ALSA codec driver. Intention is to
>> maximize the reuse and minimize the changes in the legacy HDA codec driver.
>>
>> I would like to receive feedback before proceeding further on this
>> direction.
>>
>> INFO:
>> - This series is tested on KBL based product (Dell XPS 13).
>> - Basic playback is working with headset and speakers.
>> - HDMI playback is working.
>> - Capture operation is not tested.
>> - More platforms and use cases coverage can be added once we have basic
>>   agreement in terms of the overall approach.
>>
>> Changes in v2:
>> - Using Topology framework to create DAIs and DAI Links
>> - Moved most commonly used functions into a separate file for machine driver
>> - Implemented separate Realtek ASoC HDA Driver driver for Realtek HDA
>codecs.
>>   It is just a driver registration wrapper which reuses the legacy HDA codec
>>   driver. This allows the removes the limitation that was present in v1.
>> - Implemented the review feedback.
>
>Looking through the patchset quickly, I have a mixed feeling with it.
>I see you're trying to get it working with minimal changes, which is

Thanks once again for the quick feedback.

>good in one side.  OTOH, it is unacceptably messy, in special, because
>the device creation and registration phases are mixed up.

I am not sure if I understand this fully. "Device creation and registration
phases are mixed up". If you can explain bit more, I can try to improve
it.

>
>And exporting each codec table doesn't look nice.  We need to find a
>better way...

Do you think accessing the codec table via some EXPORT function
is a better way ?

>
>
>thanks,
>
>Takashi

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Takashi Iwai]

On Mon, 11 Dec 2017 16:10:32 +0100,
Ughreja, Rakesh A wrote:
> 
> >good in one side.  OTOH, it is unacceptably messy, in special, because
> >the device creation and registration phases are mixed up.
> 
> I am not sure if I understand this fully. "Device creation and registration
> phases are mixed up". If you can explain bit more, I can try to improve
> it.

e.g. in the patch 7, snd_hda_asoc_codec_new() has the code like:

+int snd_hda_asoc_codec_new(struct hda_bus *bus, struct snd_card *card,
+			unsigned int codec_addr, struct hda_codec **codecp)
+{
+	struct hda_codec *codec = NULL;
....
+	err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);

which means that the device is being created in this function.
At the same time, however, this function tries to register that codec
device itself soon after the above:

+	list_for_each_entry(snd_dev, &card->devices, list) {
+		if (snd_dev->type == SNDRV_DEV_CODEC) {
+			void *device_data = snd_dev->device_data;
+
+			err = snd_device_register(card, device_data);
+			if (err < 0)

This is wrong.  The registration must happen at a later stage once
after all components get ready.  After all, that's the reason we have
the dev_register individual callback in snd_dev_ops.

The exception is a case with multiple probe-bindings like USB-audio
that matches multiple times per interface.  But it's an exception, and
not applied to the normal probe.  (And if any, you should just
register the whole via snd_card_register() call.)

> >And exporting each codec table doesn't look nice.  We need to find a
> >better way...
> 
> Do you think accessing the codec table via some EXPORT function
> is a better way ?

We need more consideration.  I don't think we have done it fully
enough.  At least, exporting each table sounds like a bad idea.
Ideally, we should re-use the whole codec driver as is; i.e. the
single codec probe should work for both legacy and ext controllers.


Takashi

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Ughreja, Rakesh A]

>-----Original Message-----
>From: Takashi Iwai [mailto:tiwai@suse.de]
>Sent: Monday, December 11, 2017 8:51 PM
>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>Cc: alsa-devel@alsa-project.org; broonie@kernel.org;
>liam.r.girdwood@linux.intel.com; pierre-louis.bossart@linux.intel.com; Koul, Vinod
><vinod.koul@intel.com>; Patches Audio <patches.audio@intel.com>
>Subject: Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms
>(Series2)
>
>On Mon, 11 Dec 2017 16:10:32 +0100,
>Ughreja, Rakesh A wrote:
>>
>> >good in one side.  OTOH, it is unacceptably messy, in special, because
>> >the device creation and registration phases are mixed up.
>>
>> I am not sure if I understand this fully. "Device creation and registration
>> phases are mixed up". If you can explain bit more, I can try to improve
>> it.
>
>e.g. in the patch 7, snd_hda_asoc_codec_new() has the code like:
>
>+int snd_hda_asoc_codec_new(struct hda_bus *bus, struct snd_card *card,
>+			unsigned int codec_addr, struct hda_codec **codecp)
>+{
>+	struct hda_codec *codec = NULL;
>....
>+	err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
>
>which means that the device is being created in this function.
>At the same time, however, this function tries to register that codec
>device itself soon after the above:
>
>+	list_for_each_entry(snd_dev, &card->devices, list) {
>+		if (snd_dev->type == SNDRV_DEV_CODEC) {
>+			void *device_data = snd_dev->device_data;
>+
>+			err = snd_device_register(card, device_data);
>+			if (err < 0)
>
>This is wrong.  The registration must happen at a later stage once
>after all components get ready.  After all, that's the reason we have
>the dev_register individual callback in snd_dev_ops.

So when you say "after all the components get ready"
what exactly you are referring to ?

I am calling snd_hda_asoc_codec_new function from probe function of 
hdac_driver. So I was thinking that since the codec is already enumerated
from the bus point of view, I can register. What am I missing here ?

>
>The exception is a case with multiple probe-bindings like USB-audio
>that matches multiple times per interface.  But it's an exception, and
>not applied to the normal probe.  (And if any, you should just
>register the whole via snd_card_register() call.)
>
>> >And exporting each codec table doesn't look nice.  We need to find a
>> >better way...
>>
>> Do you think accessing the codec table via some EXPORT function
>> is a better way ?
>
>We need more consideration.  I don't think we have done it fully
>enough.  At least, exporting each table sounds like a bad idea.
>Ideally, we should re-use the whole codec driver as is; i.e. the
>single codec probe should work for both legacy and ext controllers.

The generic hdac_hda driver uses the legacy driver APIs once the 
hdac_dev is enumerated on the hdac_bus. 
While the legacy driver APIs are used by controller driver.

Do you think it's a wrong path to go ? Should the legacy driver
APIs be called directly from ASoC platform driver ?

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Takashi Iwai]

On Mon, 11 Dec 2017 19:20:41 +0100,
Ughreja, Rakesh A wrote:
> 
> 
> 
> >-----Original Message-----
> >From: Takashi Iwai [mailto:tiwai@suse.de]
> >Sent: Monday, December 11, 2017 8:51 PM
> >To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
> >Cc: alsa-devel@alsa-project.org; broonie@kernel.org;
> >liam.r.girdwood@linux.intel.com; pierre-louis.bossart@linux.intel.com; Koul, Vinod
> ><vinod.koul@intel.com>; Patches Audio <patches.audio@intel.com>
> >Subject: Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms
> >(Series2)
> >
> >On Mon, 11 Dec 2017 16:10:32 +0100,
> >Ughreja, Rakesh A wrote:
> >>
> >> >good in one side.  OTOH, it is unacceptably messy, in special, because
> >> >the device creation and registration phases are mixed up.
> >>
> >> I am not sure if I understand this fully. "Device creation and registration
> >> phases are mixed up". If you can explain bit more, I can try to improve
> >> it.
> >
> >e.g. in the patch 7, snd_hda_asoc_codec_new() has the code like:
> >
> >+int snd_hda_asoc_codec_new(struct hda_bus *bus, struct snd_card *card,
> >+			unsigned int codec_addr, struct hda_codec **codecp)
> >+{
> >+	struct hda_codec *codec = NULL;
> >....
> >+	err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
> >
> >which means that the device is being created in this function.
> >At the same time, however, this function tries to register that codec
> >device itself soon after the above:
> >
> >+	list_for_each_entry(snd_dev, &card->devices, list) {
> >+		if (snd_dev->type == SNDRV_DEV_CODEC) {
> >+			void *device_data = snd_dev->device_data;
> >+
> >+			err = snd_device_register(card, device_data);
> >+			if (err < 0)
> >
> >This is wrong.  The registration must happen at a later stage once
> >after all components get ready.  After all, that's the reason we have
> >the dev_register individual callback in snd_dev_ops.
> 
> So when you say "after all the components get ready"
> what exactly you are referring to ?
> 
> I am calling snd_hda_asoc_codec_new function from probe function of 
> hdac_driver. So I was thinking that since the codec is already enumerated
> from the bus point of view, I can register. What am I missing here ?

The registration should be triggered from the top-level, i.e. the
controller driver, once after all codecs get probed.  Otherwise, it
becomes racy.  The user-space will start poking the device before all
the stuff becomes ready.

That said, at the point when the codec is probed, the card shouldn't
be registered yet.  The card gets registered after the all components
are bound and become ready -- which is done a single
snd_card_register() call.  At this point, the access points to
user-space are provided.

> >The exception is a case with multiple probe-bindings like USB-audio
> >that matches multiple times per interface.  But it's an exception, and
> >not applied to the normal probe.  (And if any, you should just
> >register the whole via snd_card_register() call.)
> >
> >> >And exporting each codec table doesn't look nice.  We need to find a
> >> >better way...
> >>
> >> Do you think accessing the codec table via some EXPORT function
> >> is a better way ?
> >
> >We need more consideration.  I don't think we have done it fully
> >enough.  At least, exporting each table sounds like a bad idea.
> >Ideally, we should re-use the whole codec driver as is; i.e. the
> >single codec probe should work for both legacy and ext controllers.
> 
> The generic hdac_hda driver uses the legacy driver APIs once the 
> hdac_dev is enumerated on the hdac_bus. 
> While the legacy driver APIs are used by controller driver.
> 
> Do you think it's a wrong path to go ? Should the legacy driver
> APIs be called directly from ASoC platform driver ?

The ideal situation would be that there is no difference in the codec
driver level which controller driver to bind.  It means we'd need some
stuff from the legacy helper merged into the hda-core, and I'm not
sure how difficult it would be.


Takashi

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Ughreja, Rakesh A]

>-----Original Message-----
>From: Takashi Iwai [mailto:tiwai@suse.de]
>Sent: Tuesday, December 12, 2017 12:19 AM
>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>Cc: alsa-devel@alsa-project.org; broonie@kernel.org;
>liam.r.girdwood@linux.intel.com; pierre-louis.bossart@linux.intel.com; Koul,
>Vinod <vinod.koul@intel.com>; Patches Audio <patches.audio@intel.com>
>Subject: Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms
>(Series2)

>
>The registration should be triggered from the top-level, i.e. the
>controller driver, once after all codecs get probed.  Otherwise, it
>becomes racy.  The user-space will start poking the device before all
>the stuff becomes ready.

Thank you very much, I understand now.

>
>That said, at the point when the codec is probed, the card shouldn't
>be registered yet.  The card gets registered after the all components
>are bound and become ready -- which is done a single
>snd_card_register() call.  At this point, the access points to
>user-space are provided.

So based on your suggestion when I relooked at the code, I could
remove the new function that I added. I could completely reuse the 
existing function with little change.

Does it look okay ?

Following is the patch, which I tested and it works for me.
I will include this in next series but for now it's only for quick reference.

I am calling this API from the hdac_hda codec driver with argument
HDA_DEV_ASOC to make sure that it does not register with the bus
again. I am not able to call this API from ASoC Platform driver because
I don't have snd_card pointer at the time of machine driver probe.

Following is the patch. 
---------------------------
Modify snd_hda_codec_new API so that it can work for legacy as well as
ASoC codec drivers. The API takes an additional argument dev_type as
HDA_DEV_LEGACY or HDA_DEV_ASOC to distinguish the caller.

Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
---
 sound/pci/hda/hda_codec.c      | 30 +++++++++++++++++++-----------
 sound/pci/hda/hda_codec.h      |  3 ++-
 sound/pci/hda/hda_controller.c |  2 +-
 3 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 085fd9e..252779c 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -865,7 +865,8 @@ static void snd_hda_codec_dev_release(struct device *dev)
  * Returns 0 if successful, or a negative error code.
  */
 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
-		      unsigned int codec_addr, struct hda_codec **codecp)
+		      unsigned int codec_addr, struct hda_codec **codecp,
+			unsigned int dev_type)
 {
 	struct hda_codec *codec;
 	char component[31];
@@ -882,20 +883,27 @@ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
 	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
 		return -EINVAL;
 
-	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
-	if (!codec)
-		return -ENOMEM;
+	if (dev_type == HDA_DEV_LEGACY) {
 
-	sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
-	err = snd_hdac_device_init(&codec->core, &bus->core, component,
-				   codec_addr);
-	if (err < 0) {
-		kfree(codec);
-		return err;
+		codec = kzalloc(sizeof(*codec), GFP_KERNEL);
+		if (!codec)
+			return -ENOMEM;
+
+		sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
+		err = snd_hdac_device_init(&codec->core, &bus->core, component,
+						codec_addr);
+		if (err < 0) {
+			kfree(codec);
+			return err;
+		}
+
+		codec->core.type = HDA_DEV_LEGACY;
+
+	} else {
+		codec = *codecp;
 	}
 
 	codec->core.dev.release = snd_hda_codec_dev_release;
-	codec->core.type = HDA_DEV_LEGACY;
 	codec->core.exec_verb = codec_exec_verb;
 
 	codec->bus = bus;
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index d3099db..92815b7 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -306,7 +306,8 @@ struct hda_codec {
  * constructors
  */
 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
-		      unsigned int codec_addr, struct hda_codec **codecp);
+			unsigned int codec_addr, struct hda_codec **codecp,
+			unsigned int dev_type);
 int snd_hda_codec_configure(struct hda_codec *codec);
 int snd_hda_codec_update_widgets(struct hda_codec *codec);
 
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index d1eb148..ec887d7 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -1318,7 +1318,7 @@ int azx_probe_codecs(struct azx *chip, unsigned int max_slots)
 	for (c = 0; c < max_slots; c++) {
 		if ((bus->codec_mask & (1 << c)) & chip->codec_probe_mask) {
 			struct hda_codec *codec;
-			err = snd_hda_codec_new(&chip->bus, chip->card, c, &codec);
+			err = snd_hda_codec_new(&chip->bus, chip->card, c, &codec, HDA_DEV_LEGACY);
 			if (err < 0)
 				continue;
 			codec->jackpoll_interval = get_jackpoll_interval(chip);
-- 
2.7.4

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Takashi Iwai]

On Tue, 12 Dec 2017 17:37:56 +0100,
Ughreja, Rakesh A wrote:
> 
> 
> 
> >-----Original Message-----
> >From: Takashi Iwai [mailto:tiwai@suse.de]
> >Sent: Tuesday, December 12, 2017 12:19 AM
> >To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
> >Cc: alsa-devel@alsa-project.org; broonie@kernel.org;
> >liam.r.girdwood@linux.intel.com; pierre-louis.bossart@linux.intel.com; Koul,
> >Vinod <vinod.koul@intel.com>; Patches Audio <patches.audio@intel.com>
> >Subject: Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms
> >(Series2)
> 
> >
> >The registration should be triggered from the top-level, i.e. the
> >controller driver, once after all codecs get probed.  Otherwise, it
> >becomes racy.  The user-space will start poking the device before all
> >the stuff becomes ready.
> 
> Thank you very much, I understand now.
> 
> >
> >That said, at the point when the codec is probed, the card shouldn't
> >be registered yet.  The card gets registered after the all components
> >are bound and become ready -- which is done a single
> >snd_card_register() call.  At this point, the access points to
> >user-space are provided.
> 
> So based on your suggestion when I relooked at the code, I could
> remove the new function that I added. I could completely reuse the 
> existing function with little change.
> 
> Does it look okay ?

Lesser, better :)


> Following is the patch, which I tested and it works for me.
> I will include this in next series but for now it's only for quick reference.
> 
> I am calling this API from the hdac_hda codec driver with argument
> HDA_DEV_ASOC to make sure that it does not register with the bus
> again. I am not able to call this API from ASoC Platform driver because
> I don't have snd_card pointer at the time of machine driver probe.
> 
> Following is the patch. 
> ---------------------------
> Modify snd_hda_codec_new API so that it can work for legacy as well as
> ASoC codec drivers. The API takes an additional argument dev_type as
> HDA_DEV_LEGACY or HDA_DEV_ASOC to distinguish the caller.

The idea looks good, but I'd prefer different functions instead of
mutating the behavior depending on the flag.  i.e. keep
snd_hda_codec_new(), and introduce another API (snd_hda_codec_init()
or whatever).  ASoC driver can call the latter while the legacy driver
keeps calling the former.

This would factor out the allocation and snd_hdac_device_init() calls
from the old snd_hda_codec_new() to a new snd_hda_codec_new().
snd_hda_codec_init() would do the rest.  snd_hda_codec_new() calls
snd_hda_codec_init() at the end of the function.

Does this sound good for you?


thanks,

Takashi

> 
> Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
> ---
>  sound/pci/hda/hda_codec.c      | 30 +++++++++++++++++++-----------
>  sound/pci/hda/hda_codec.h      |  3 ++-
>  sound/pci/hda/hda_controller.c |  2 +-
>  3 files changed, 22 insertions(+), 13 deletions(-)
> 
> diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
> index 085fd9e..252779c 100644
> --- a/sound/pci/hda/hda_codec.c
> +++ b/sound/pci/hda/hda_codec.c
> @@ -865,7 +865,8 @@ static void snd_hda_codec_dev_release(struct device *dev)
>   * Returns 0 if successful, or a negative error code.
>   */
>  int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
> -		      unsigned int codec_addr, struct hda_codec **codecp)
> +		      unsigned int codec_addr, struct hda_codec **codecp,
> +			unsigned int dev_type)
>  {
>  	struct hda_codec *codec;
>  	char component[31];
> @@ -882,20 +883,27 @@ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
>  	if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
>  		return -EINVAL;
>  
> -	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
> -	if (!codec)
> -		return -ENOMEM;
> +	if (dev_type == HDA_DEV_LEGACY) {
>  
> -	sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
> -	err = snd_hdac_device_init(&codec->core, &bus->core, component,
> -				   codec_addr);
> -	if (err < 0) {
> -		kfree(codec);
> -		return err;
> +		codec = kzalloc(sizeof(*codec), GFP_KERNEL);
> +		if (!codec)
> +			return -ENOMEM;
> +
> +		sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
> +		err = snd_hdac_device_init(&codec->core, &bus->core, component,
> +						codec_addr);
> +		if (err < 0) {
> +			kfree(codec);
> +			return err;
> +		}
> +
> +		codec->core.type = HDA_DEV_LEGACY;
> +
> +	} else {
> +		codec = *codecp;
>  	}
>  
>  	codec->core.dev.release = snd_hda_codec_dev_release;
> -	codec->core.type = HDA_DEV_LEGACY;
>  	codec->core.exec_verb = codec_exec_verb;
>  
>  	codec->bus = bus;
> diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
> index d3099db..92815b7 100644
> --- a/sound/pci/hda/hda_codec.h
> +++ b/sound/pci/hda/hda_codec.h
> @@ -306,7 +306,8 @@ struct hda_codec {
>   * constructors
>   */
>  int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
> -		      unsigned int codec_addr, struct hda_codec **codecp);
> +			unsigned int codec_addr, struct hda_codec **codecp,
> +			unsigned int dev_type);
>  int snd_hda_codec_configure(struct hda_codec *codec);
>  int snd_hda_codec_update_widgets(struct hda_codec *codec);
>  
> diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
> index d1eb148..ec887d7 100644
> --- a/sound/pci/hda/hda_controller.c
> +++ b/sound/pci/hda/hda_controller.c
> @@ -1318,7 +1318,7 @@ int azx_probe_codecs(struct azx *chip, unsigned int max_slots)
>  	for (c = 0; c < max_slots; c++) {
>  		if ((bus->codec_mask & (1 << c)) & chip->codec_probe_mask) {
>  			struct hda_codec *codec;
> -			err = snd_hda_codec_new(&chip->bus, chip->card, c, &codec);
> +			err = snd_hda_codec_new(&chip->bus, chip->card, c, &codec, HDA_DEV_LEGACY);
>  			if (err < 0)
>  				continue;
>  			codec->jackpoll_interval = get_jackpoll_interval(chip);
> -- 
> 2.7.4
> 

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Ughreja, Rakesh A]

>-----Original Message-----
>From: alsa-devel-bounces@alsa-project.org [mailto:alsa-devel-bounces@alsa-
>project.org] On Behalf Of Takashi Iwai
>Sent: Tuesday, December 12, 2017 10:21 PM
>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>Cc: alsa-devel@alsa-project.org; Koul, Vinod <vinod.koul@intel.com>; pierre-
>louis.bossart@linux.intel.com; liam.r.girdwood@linux.intel.com; Patches Audio
><patches.audio@intel.com>; broonie@kernel.org
>Subject: Re: [alsa-devel] [RFC v2 00/11] Enable HDA Codec support on Intel
>Platforms (Series2)
>


>
>The idea looks good, but I'd prefer different functions instead of
>mutating the behavior depending on the flag.  i.e. keep
>snd_hda_codec_new(), and introduce another API (snd_hda_codec_init()
>or whatever).  ASoC driver can call the latter while the legacy driver
>keeps calling the former.
>
>This would factor out the allocation and snd_hdac_device_init() calls
>from the old snd_hda_codec_new() to a new snd_hda_codec_new().
>snd_hda_codec_init() would do the rest.  snd_hda_codec_new() calls
>snd_hda_codec_init() at the end of the function.
>
>Does this sound good for you?

I think I got this :) Thanks. Here is the skeleton code.
I split the existing function snd_hda_codec_new into two parts.

1. snd_hda_codec_device_init()
2. snd_hda_codec_device_new()

So the new body of existing function snd_hda_codec_new looks like.

int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,               
                      unsigned int codec_addr, struct hda_codec **codecp)       
{                                                                               
        int ret;                                                                
                                                                                
        ret = snd_hda_codec_device_init(bus, card, codec_addr, codecp);         
        if (ret < 0)                                                            
                return ret;                                                     
                                                                                
        return snd_hda_codec_device_new(bus, card, codec_addr, *codecp);        
}

The ASoC driver would call only snd_hda_codec_device_new.
If you have any suggestions for the function names, I can change it before
I post the next series.

Now switching over to the id_table problem. In the current series it is accessed
using extern, in the patch_realtek.c file. So we really have two different
KO files. One for legacy HDA driver and second for ASoC HDA driver.

Would you like to keep them as two separate KO files or prefer to have a
single KO file ?

Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Joël Krähemann]

Hi,
Where is your code located? Since I have got a macbook pro 2016 and I
believe this feature is a prerequisite to get any sound working.
I would love to test it with my cirrus logic 8409 HDA soundcard.

Bests,
Joël


On Tue, Dec 12, 2017 at 5:37 PM, Ughreja, Rakesh A
<rakesh.a.ughreja@intel.com> wrote:
>
>
>>-----Original Message-----
>>From: Takashi Iwai [mailto:tiwai@suse.de]
>>Sent: Tuesday, December 12, 2017 12:19 AM
>>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>>Cc: alsa-devel@alsa-project.org; broonie@kernel.org;
>>liam.r.girdwood@linux.intel.com; pierre-louis.bossart@linux.intel.com; Koul,
>>Vinod <vinod.koul@intel.com>; Patches Audio <patches.audio@intel.com>
>>Subject: Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms
>>(Series2)
>
>>
>>The registration should be triggered from the top-level, i.e. the
>>controller driver, once after all codecs get probed.  Otherwise, it
>>becomes racy.  The user-space will start poking the device before all
>>the stuff becomes ready.
>
> Thank you very much, I understand now.
>
>>
>>That said, at the point when the codec is probed, the card shouldn't
>>be registered yet.  The card gets registered after the all components
>>are bound and become ready -- which is done a single
>>snd_card_register() call.  At this point, the access points to
>>user-space are provided.
>
> So based on your suggestion when I relooked at the code, I could
> remove the new function that I added. I could completely reuse the
> existing function with little change.
>
> Does it look okay ?
>
> Following is the patch, which I tested and it works for me.
> I will include this in next series but for now it's only for quick reference.
>
> I am calling this API from the hdac_hda codec driver with argument
> HDA_DEV_ASOC to make sure that it does not register with the bus
> again. I am not able to call this API from ASoC Platform driver because
> I don't have snd_card pointer at the time of machine driver probe.
>
> Following is the patch.
> ---------------------------
> Modify snd_hda_codec_new API so that it can work for legacy as well as
> ASoC codec drivers. The API takes an additional argument dev_type as
> HDA_DEV_LEGACY or HDA_DEV_ASOC to distinguish the caller.
>
> Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
> ---
>  sound/pci/hda/hda_codec.c      | 30 +++++++++++++++++++-----------
>  sound/pci/hda/hda_codec.h      |  3 ++-
>  sound/pci/hda/hda_controller.c |  2 +-
>  3 files changed, 22 insertions(+), 13 deletions(-)
>
> diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
> index 085fd9e..252779c 100644
> --- a/sound/pci/hda/hda_codec.c
> +++ b/sound/pci/hda/hda_codec.c
> @@ -865,7 +865,8 @@ static void snd_hda_codec_dev_release(struct device *dev)
>   * Returns 0 if successful, or a negative error code.
>   */
>  int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
> -                     unsigned int codec_addr, struct hda_codec **codecp)
> +                     unsigned int codec_addr, struct hda_codec **codecp,
> +                       unsigned int dev_type)
>  {
>         struct hda_codec *codec;
>         char component[31];
> @@ -882,20 +883,27 @@ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
>         if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
>                 return -EINVAL;
>
> -       codec = kzalloc(sizeof(*codec), GFP_KERNEL);
> -       if (!codec)
> -               return -ENOMEM;
> +       if (dev_type == HDA_DEV_LEGACY) {
>
> -       sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
> -       err = snd_hdac_device_init(&codec->core, &bus->core, component,
> -                                  codec_addr);
> -       if (err < 0) {
> -               kfree(codec);
> -               return err;
> +               codec = kzalloc(sizeof(*codec), GFP_KERNEL);
> +               if (!codec)
> +                       return -ENOMEM;
> +
> +               sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
> +               err = snd_hdac_device_init(&codec->core, &bus->core, component,
> +                                               codec_addr);
> +               if (err < 0) {
> +                       kfree(codec);
> +                       return err;
> +               }
> +
> +               codec->core.type = HDA_DEV_LEGACY;
> +
> +       } else {
> +               codec = *codecp;
>         }
>
>         codec->core.dev.release = snd_hda_codec_dev_release;
> -       codec->core.type = HDA_DEV_LEGACY;
>         codec->core.exec_verb = codec_exec_verb;
>
>         codec->bus = bus;
> diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
> index d3099db..92815b7 100644
> --- a/sound/pci/hda/hda_codec.h
> +++ b/sound/pci/hda/hda_codec.h
> @@ -306,7 +306,8 @@ struct hda_codec {
>   * constructors
>   */
>  int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
> -                     unsigned int codec_addr, struct hda_codec **codecp);
> +                       unsigned int codec_addr, struct hda_codec **codecp,
> +                       unsigned int dev_type);
>  int snd_hda_codec_configure(struct hda_codec *codec);
>  int snd_hda_codec_update_widgets(struct hda_codec *codec);
>
> diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
> index d1eb148..ec887d7 100644
> --- a/sound/pci/hda/hda_controller.c
> +++ b/sound/pci/hda/hda_controller.c
> @@ -1318,7 +1318,7 @@ int azx_probe_codecs(struct azx *chip, unsigned int max_slots)
>         for (c = 0; c < max_slots; c++) {
>                 if ((bus->codec_mask & (1 << c)) & chip->codec_probe_mask) {
>                         struct hda_codec *codec;
> -                       err = snd_hda_codec_new(&chip->bus, chip->card, c, &codec);
> +                       err = snd_hda_codec_new(&chip->bus, chip->card, c, &codec, HDA_DEV_LEGACY);
>                         if (err < 0)
>                                 continue;
>                         codec->jackpoll_interval = get_jackpoll_interval(chip);
> --
> 2.7.4
>
> _______________________________________________
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Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Ughreja, Rakesh A]

>-----Original Message-----
>From: alsa-devel-bounces@alsa-project.org [mailto:alsa-devel-bounces@alsa-
>project.org] On Behalf Of Joël Krähemann
>Sent: Tuesday, December 12, 2017 11:52 PM
>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>Cc: alsa-devel@alsa-project.org; Takashi Iwai <tiwai@suse.de>; pierre-
>louis.bossart@linux.intel.com; Patches Audio <patches.audio@intel.com>;
>liam.r.girdwood@linux.intel.com; Koul, Vinod <vinod.koul@intel.com>;
>broonie@kernel.org
>Subject: Re: [alsa-devel] [RFC v2 00/11] Enable HDA Codec support on Intel
>Platforms (Series2)
>
>Hi,
>Where is your code located? Since I have got a macbook pro 2016 and I
>believe this feature is a prerequisite to get any sound working.
>I would love to test it with my cirrus logic 8409 HDA soundcard.

My last series was rebased on top of Mark's for-next tree. You would need
Topology file, which I can send via email. But before I do that I want to confirm
if you have the right things enabled.

Do you know if it is based on 6th Generation (SKL) or 7th Generation(KBL) of Intel core ?
You will need to download the DSP Firmware binary file based on this.
Also I am not sure if the DSP functionality is enabled on the MAC systems. If you compile
snd-hda-core.ko in debug mode, it prints the capabilities. I can check that from the logs.

Regards,
Rakesh

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Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Joël Krähemann]

Hi,
I am pretty sure it contains this integrated circuit: MAX98357BEWL
It is a DSP. Why is a need for firmware?

It is a Intel Core i5-6360U

https://bugzilla.kernel.org/show_bug.cgi?id=195671

Bests,
Joël

On Tue, Dec 12, 2017 at 7:40 PM, Ughreja, Rakesh A
<rakesh.a.ughreja@intel.com> wrote:
>
>
>>-----Original Message-----
>>From: alsa-devel-bounces@alsa-project.org [mailto:alsa-devel-bounces@alsa-
>>project.org] On Behalf Of Joël Krähemann
>>Sent: Tuesday, December 12, 2017 11:52 PM
>>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>>Cc: alsa-devel@alsa-project.org; Takashi Iwai <tiwai@suse.de>; pierre-
>>louis.bossart@linux.intel.com; Patches Audio <patches.audio@intel.com>;
>>liam.r.girdwood@linux.intel.com; Koul, Vinod <vinod.koul@intel.com>;
>>broonie@kernel.org
>>Subject: Re: [alsa-devel] [RFC v2 00/11] Enable HDA Codec support on Intel
>>Platforms (Series2)
>>
>>Hi,
>>Where is your code located? Since I have got a macbook pro 2016 and I
>>believe this feature is a prerequisite to get any sound working.
>>I would love to test it with my cirrus logic 8409 HDA soundcard.
>
> My last series was rebased on top of Mark's for-next tree. You would need
> Topology file, which I can send via email. But before I do that I want to confirm
> if you have the right things enabled.
>
> Do you know if it is based on 6th Generation (SKL) or 7th Generation(KBL) of Intel core ?
> You will need to download the DSP Firmware binary file based on this.
> Also I am not sure if the DSP functionality is enabled on the MAC systems. If you compile
> snd-hda-core.ko in debug mode, it prints the capabilities. I can check that from the logs.
>
> Regards,
> Rakesh
>
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Re: [RFC v2 00/11] Enable HDA Codec support on Intel Platforms (Series2)

[Ughreja, Rakesh A]

>-----Original Message-----
>From: Joël Krähemann [mailto:jkraehemann@gmail.com]
>Sent: Wednesday, December 13, 2017 12:21 AM
>To: Ughreja, Rakesh A <rakesh.a.ughreja@intel.com>
>Cc: alsa-devel@alsa-project.org; Takashi Iwai <tiwai@suse.de>; pierre-
>louis.bossart@linux.intel.com; Patches Audio <patches.audio@intel.com>;
>liam.r.girdwood@linux.intel.com; Koul, Vinod <vinod.koul@intel.com>;
>broonie@kernel.org
>Subject: Re: [alsa-devel] [RFC v2 00/11] Enable HDA Codec support on Intel
>Platforms (Series2)
>
>Hi,
>I am pretty sure it contains this integrated circuit: MAX98357BEWL
>It is a DSP. Why is a need for firmware?
>
>It is a Intel Core i5-6360U
>
>https://bugzilla.kernel.org/show_bug.cgi?id=195671

After looking at the Bugzilla it looks like you are looking for something
else.

Recent Intel platforms contains HD Audio controllers with Integrated 
DSPs. Intel releases firmware which runs on this DSPs. You can connect
various codecs e.g. I2S, HDA etc. Support for I2S based codecs is
already available in the kernel today. However support for HDA codecs
connected via DSP is not yet upstreamed. I am trying to do it.

In your case the DSP functionality is part of the Maxim HDA codec.
My work is to enable the DSP functionality on the Intel SoC. So it
may not help you directly.

Regards,
Rakesh

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