[PATCH v5 00/16] ALSA/ASoC: hda: Address format selection limitations and ambiguity

[PATCH v5 00/16] ALSA/ASoC: hda: Address format selection limitations and ambiguity

[Cezary Rojewski]

Patchset aims to address format selection restrictions present currently
in the HDAudio library. Formats which we are concerned about are 20 and
24 valid bits per sample within 32 bit depth container. One may identify
them as S20_LE and S24_LE except that those, according to comments found
in include/uapi/sound/asound.h, are for LSB-aligned scenarios. HDAudio
streams expect MSB-aligned data, no matter if we are speaking of HOST
(SDxFMT) or LINK (PPLCxFMT) side - chapter 4.5.1 of the public HDAudio
specification. In short, S20_LE and S24_LE are invalid options.

Right now, given the implementation of snd_hdac_query_supported_pcm() 
within sound/hda/hdac_device.c, even if a codec responds with: "I
support all possible formats specified within HDAudio specification",
there will be no option to open a 20/32 or 24/32 stream. The kernel will
force the stream to be opened using the highest available bit depth.

After discussing subject initially with Jaroslav and Takashi, suggestion
was made to utilize 'subformat' option to address the problem. The
eye-opening discussion begun much earlier though, in 2019 [1].

Paired with PRs for alsa-utils [2] and alsa-lib [3].


Flow of changes:

The very first patch adds MSBITS subformat options to allow for granular
20/32, 24/32 and 32/32 format selection. The next two make sure
subformat is actually honored during runtime. Most of that code is based
on format-related API.

Follow up is upgrade to the hda stream-format interface - several
functions are added to make the granular format selection simple in the
HDAudio world. Core of the implementation is based on the existing
snd_hdac_calc_stream_format(). The next ten patches are straightforward
switch from one interface to another with cleanup of now-unsed function
as a finishing touch.

Last but not least - the avs-driver, on which the problem analyzed and
debugged, is updated to no longer acknowledge S24_LE as a valid format
option.

Results with skylake-driver and snd_hda_intel show status quo on our
RVPs. PR filed on SOF github shows promising results too [4].


Changes in v5:
- reworded 'bps' to 'bits' in all occurrences.
- fixed an issue of MSBITS_MAX not being reported for S32_LE as reported
  by Jaroslav
- snd_pcm_subformat_width() has been inlined into its only user:
  snd_pcm_hw_params_bits() as suggested by Jaroslav.
- updated commit messege for patch 01 as it was out of date given the
  recent updates.

Changes in v4:
- fixed compilation issues in sof-driver, patch 12/16, reported by ikp
- fixed sparse warnings in patch 01/16, reported by ikp
- updated commit message for patch 03: "ASoC pcm: Honor subformat when
  configuring runtime", as snd_pcm_hw_copy() is gone since revision v3.

Changes in v3:
- merged the first two patches as suggested by Jaroslav
- re-authored patch 01 to Jaroslav, added my Co-developed-by.
- added Jaroslav' Co-developed-by to patch 02.
- 'subformats' field now S32_LE-specific. Given the fact that it is the
  only format currently requiring subformat-intervention, functionality
  is narrowed to reduce amount of memory allocations and cleanup.
  Suggested by Jaroslav.
- note to the above: the hdaudio part converted 1:1 as requested, patch
  02/16
- note #2: alsa part converted to S32_LE-specific yet without addition
  of the chicken bit. Instead, struct snd_pcm_hardware is updated with
  u32 subformat mask to do the job.
- ALSA-core additions in form of snd_pcm_subformat_width() and
  snd_pcm_hw_params_bps() relocated from 01/16 to the user, patch 05.

Changes in v2:
- patch 01/17, introduced struct snd_pcm_subformat which task is to
  represent subformat-mask on per format basis. Expectation is that
  manipulated arrays of subformats always end with a sentinel entry
- patch 01/17, added snd_pcm_hw_copy() as the copying snd_pcm_hardware
  becomes non-trivial
- patch 02/17, added hw_rule that produces final subformat mask
  based on provided formats as suggested by Jaroslav
- patch 04/17, soc_pcm_hw_update_subformat() refactored as the subformat
  intersection becomes non-trivial
- relevant functions releasing resources occupied by hda_pcm and
  snd_pcm_runtime updated to also kfree() subformats
- except for 16/17, no changes to patches past 04/17, retaining acks for
  these

Changes in v1:
- fixed UBSAN due to missing snd_pcm_subformat_names[] entries for new
  subformats
- as HDMI stream capabilities are assigned on PCM open, patch 16/17 has
  been updated to ignore such codecs for now. A separate patchset will
  take care of this case
- params_bps() reworded to snd_pcm_hw_params_bps()
- fixed compilation issues in sof-driver, patch 13/17


[1]: https://lore.kernel.org/alsa-devel/20190905053302.9262-1-pawel.harlozinski@linux.intel.com/
[2]: https://github.com/alsa-project/alsa-utils/pull/228
[3]: https://github.com/alsa-project/alsa-lib/pull/342
[4]: https://github.com/thesofproject/linux/pull/4539

Cezary Rojewski (15):
  ALSA: hda: Honor subformat when querying PCMs
  ASoC: pcm: Honor subformat when configuring runtime
  ALSA: hda: Upgrade stream-format infrastructure
  ALSA: hda: Switch to new stream-format interface
  ALSA: hda/hdmi: Switch to new stream-format interface
  ALSA: hda/ca0132: Switch to new stream-format interface
  ASoC: codecs: hda: Switch to new stream-format interface
  ASoC: codecs: hdac_hda: Switch to new stream-format interface
  ASoC: codecs: hdac_hdmi: Switch to new stream-format interface
  ASoC: Intel Skylake: Switch to new stream-format interface
  ASoC: SOF: Intel: Switch to new stream-format interface
  ASoC: Intel: avs: Switch to new stream-format interface
  ALSA: hda: Drop snd_hdac_calc_stream_format()
  ASoC: Intel: avs: Kill S24_LE format
  ASoC: Intel: avs: Unhardcode HDAudio BE DAI drivers description

Jaroslav Kysela (1):
  ALSA: pcm: Introduce MSBITS subformat interface

 include/sound/hda_codec.h         |   5 +-
 include/sound/hdaudio.h           |  13 +--
 include/sound/pcm.h               |   7 ++
 include/sound/pcm_params.h        |   2 +
 include/sound/soc.h               |   1 +
 include/uapi/sound/asound.h       |   7 +-
 sound/core/pcm.c                  |   3 +
 sound/core/pcm_lib.c              |  34 +++++++
 sound/core/pcm_native.c           |  55 ++++++++++-
 sound/hda/hdac_device.c           | 156 +++++++++++++++++++++---------
 sound/pci/hda/hda_codec.c         |   2 +
 sound/pci/hda/hda_controller.c    |  10 +-
 sound/pci/hda/patch_ca0132.c      |   3 +-
 sound/pci/hda/patch_hdmi.c        |   6 +-
 sound/soc/codecs/hda-dai.c        |   7 +-
 sound/soc/codecs/hda.c            |   2 +
 sound/soc/codecs/hdac_hda.c       |   8 +-
 sound/soc/codecs/hdac_hdmi.c      |  10 +-
 sound/soc/intel/avs/loader.c      |   4 +-
 sound/soc/intel/avs/path.c        |   2 +-
 sound/soc/intel/avs/pcm.c         |  58 +++++++++--
 sound/soc/intel/avs/probes.c      |   3 +-
 sound/soc/intel/avs/topology.c    |  13 ++-
 sound/soc/intel/skylake/skl-pcm.c |  13 ++-
 sound/soc/soc-pcm.c               |  10 ++
 sound/soc/sof/intel/hda-dai-ops.c |  21 ++--
 tools/include/uapi/sound/asound.h |   7 +-
 27 files changed, 352 insertions(+), 110 deletions(-)


-- 
2.25.1

[PATCH v5 01/16] ALSA: pcm: Introduce MSBITS subformat interface

[Cezary Rojewski]

From: Jaroslav Kysela <perex@perex.cz>

Improve granularity of format selection for S32/U32 formats by adding
constants representing 20, 24 and MAX most significant bits.

The MAX means the maximum number of significant bits which can
the physical format hold. For 32-bit formats, MAX is related
to 32 bits. For 8-bit formats, MAX is related to 8 bits etc.

As there is only one user currently (format S32_LE), subformat is
represented by a simple u32 and stores flags only for that one user
alone. The approach of subformat being part of struct snd_pcm_hardware
is a compromise between ALSA and ASoC allowing for
hw_params-intersection code to be alloc/free-less while not adding any
new responsibilities to ASoC runtime structures.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Co-developed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 include/sound/pcm.h               |  7 ++++
 include/uapi/sound/asound.h       |  7 ++--
 sound/core/pcm.c                  |  3 ++
 sound/core/pcm_native.c           | 55 +++++++++++++++++++++++++++++--
 tools/include/uapi/sound/asound.h |  7 ++--
 5 files changed, 73 insertions(+), 6 deletions(-)

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 2a815373dac1..cc175c623dac 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -32,6 +32,7 @@
 struct snd_pcm_hardware {
 	unsigned int info;		/* SNDRV_PCM_INFO_* */
 	u64 formats;			/* SNDRV_PCM_FMTBIT_* */
+	u32 subformats;			/* for S32_LE, SNDRV_PCM_SUBFMTBIT_* */
 	unsigned int rates;		/* SNDRV_PCM_RATE_* */
 	unsigned int rate_min;		/* min rate */
 	unsigned int rate_max;		/* max rate */
@@ -217,6 +218,12 @@ struct snd_pcm_ops {
 #define SNDRV_PCM_FMTBIT_U20		SNDRV_PCM_FMTBIT_U20_BE
 #endif
 
+#define _SNDRV_PCM_SUBFMTBIT(fmt)	BIT((__force int)SNDRV_PCM_SUBFORMAT_##fmt)
+#define SNDRV_PCM_SUBFMTBIT_STD		_SNDRV_PCM_SUBFMTBIT(STD)
+#define SNDRV_PCM_SUBFMTBIT_MSBITS_MAX	_SNDRV_PCM_SUBFMTBIT(MSBITS_MAX)
+#define SNDRV_PCM_SUBFMTBIT_MSBITS_20	_SNDRV_PCM_SUBFMTBIT(MSBITS_20)
+#define SNDRV_PCM_SUBFMTBIT_MSBITS_24	_SNDRV_PCM_SUBFMTBIT(MSBITS_24)
+
 struct snd_pcm_file {
 	struct snd_pcm_substream *substream;
 	int no_compat_mmap;
diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h
index f9939da41122..d5b9cfbd9cea 100644
--- a/include/uapi/sound/asound.h
+++ b/include/uapi/sound/asound.h
@@ -142,7 +142,7 @@ struct snd_hwdep_dsp_image {
  *                                                                           *
  *****************************************************************************/
 
-#define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 15)
+#define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 16)
 
 typedef unsigned long snd_pcm_uframes_t;
 typedef signed long snd_pcm_sframes_t;
@@ -267,7 +267,10 @@ typedef int __bitwise snd_pcm_format_t;
 
 typedef int __bitwise snd_pcm_subformat_t;
 #define	SNDRV_PCM_SUBFORMAT_STD		((__force snd_pcm_subformat_t) 0)
-#define	SNDRV_PCM_SUBFORMAT_LAST	SNDRV_PCM_SUBFORMAT_STD
+#define	SNDRV_PCM_SUBFORMAT_MSBITS_MAX	((__force snd_pcm_subformat_t) 1)
+#define	SNDRV_PCM_SUBFORMAT_MSBITS_20	((__force snd_pcm_subformat_t) 2)
+#define	SNDRV_PCM_SUBFORMAT_MSBITS_24	((__force snd_pcm_subformat_t) 3)
+#define	SNDRV_PCM_SUBFORMAT_LAST	SNDRV_PCM_SUBFORMAT_MSBITS_24
 
 #define SNDRV_PCM_INFO_MMAP		0x00000001	/* hardware supports mmap */
 #define SNDRV_PCM_INFO_MMAP_VALID	0x00000002	/* period data are valid during transfer */
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 20bb2d7c8d4b..c4bc15f048b6 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -265,6 +265,9 @@ static const char * const snd_pcm_access_names[] = {
 
 static const char * const snd_pcm_subformat_names[] = {
 	SUBFORMAT(STD), 
+	SUBFORMAT(MSBITS_MAX),
+	SUBFORMAT(MSBITS_20),
+	SUBFORMAT(MSBITS_24),
 };
 
 static const char * const snd_pcm_tstamp_mode_names[] = {
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index f610b08f5a2b..f5ff00f99788 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -479,6 +479,7 @@ static int fixup_unreferenced_params(struct snd_pcm_substream *substream,
 {
 	const struct snd_interval *i;
 	const struct snd_mask *m;
+	struct snd_mask *m_rw;
 	int err;
 
 	if (!params->msbits) {
@@ -487,6 +488,22 @@ static int fixup_unreferenced_params(struct snd_pcm_substream *substream,
 			params->msbits = snd_interval_value(i);
 	}
 
+	if (params->msbits) {
+		m = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT);
+		if (snd_mask_single(m)) {
+			snd_pcm_format_t format = (__force snd_pcm_format_t)snd_mask_min(m);
+
+			if (snd_pcm_format_linear(format) &&
+			    snd_pcm_format_width(format) != params->msbits) {
+				m_rw = hw_param_mask(params, SNDRV_PCM_HW_PARAM_SUBFORMAT);
+				snd_mask_reset(m_rw,
+					       (__force unsigned)SNDRV_PCM_SUBFORMAT_MSBITS_MAX);
+				if (snd_mask_empty(m_rw))
+					return -EINVAL;
+			}
+		}
+	}
+
 	if (!params->rate_den) {
 		i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
 		if (snd_interval_single(i)) {
@@ -2483,6 +2500,41 @@ static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params,
 	return snd_interval_refine(hw_param_interval(params, rule->var), &t);
 }		
 
+static int snd_pcm_hw_rule_subformats(struct snd_pcm_hw_params *params,
+				      struct snd_pcm_hw_rule *rule)
+{
+	struct snd_mask *sfmask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_SUBFORMAT);
+	struct snd_mask *fmask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+	u32 *subformats = rule->private;
+	snd_pcm_format_t f;
+	struct snd_mask m;
+
+	snd_mask_none(&m);
+	/* All PCMs support at least the default STD subformat. */
+	snd_mask_set(&m, (__force unsigned)SNDRV_PCM_SUBFORMAT_STD);
+
+	pcm_for_each_format(f) {
+		if (!snd_mask_test(fmask, (__force unsigned)f))
+			continue;
+
+		if (f == SNDRV_PCM_FORMAT_S32_LE && *subformats)
+			m.bits[0] |= *subformats;
+		else if (snd_pcm_format_linear(f))
+			snd_mask_set(&m, (__force unsigned)SNDRV_PCM_SUBFORMAT_MSBITS_MAX);
+	}
+
+	return snd_mask_refine(sfmask, &m);
+}
+
+static int snd_pcm_hw_constraint_subformats(struct snd_pcm_runtime *runtime,
+					   unsigned int cond, u32 *subformats)
+{
+	return snd_pcm_hw_rule_add(runtime, cond, -1,
+				   snd_pcm_hw_rule_subformats, (void *)subformats,
+				   SNDRV_PCM_HW_PARAM_SUBFORMAT,
+				   SNDRV_PCM_HW_PARAM_FORMAT, -1);
+}
+
 static int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
@@ -2634,8 +2686,7 @@ static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
 	if (err < 0)
 		return err;
 
-	err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT,
-					 PARAM_MASK_BIT(SNDRV_PCM_SUBFORMAT_STD));
+	err = snd_pcm_hw_constraint_subformats(runtime, 0, &hw->subformats);
 	if (err < 0)
 		return err;
 
diff --git a/tools/include/uapi/sound/asound.h b/tools/include/uapi/sound/asound.h
index f9939da41122..d5b9cfbd9cea 100644
--- a/tools/include/uapi/sound/asound.h
+++ b/tools/include/uapi/sound/asound.h
@@ -142,7 +142,7 @@ struct snd_hwdep_dsp_image {
  *                                                                           *
  *****************************************************************************/
 
-#define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 15)
+#define SNDRV_PCM_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 16)
 
 typedef unsigned long snd_pcm_uframes_t;
 typedef signed long snd_pcm_sframes_t;
@@ -267,7 +267,10 @@ typedef int __bitwise snd_pcm_format_t;
 
 typedef int __bitwise snd_pcm_subformat_t;
 #define	SNDRV_PCM_SUBFORMAT_STD		((__force snd_pcm_subformat_t) 0)
-#define	SNDRV_PCM_SUBFORMAT_LAST	SNDRV_PCM_SUBFORMAT_STD
+#define	SNDRV_PCM_SUBFORMAT_MSBITS_MAX	((__force snd_pcm_subformat_t) 1)
+#define	SNDRV_PCM_SUBFORMAT_MSBITS_20	((__force snd_pcm_subformat_t) 2)
+#define	SNDRV_PCM_SUBFORMAT_MSBITS_24	((__force snd_pcm_subformat_t) 3)
+#define	SNDRV_PCM_SUBFORMAT_LAST	SNDRV_PCM_SUBFORMAT_MSBITS_24
 
 #define SNDRV_PCM_INFO_MMAP		0x00000001	/* hardware supports mmap */
 #define SNDRV_PCM_INFO_MMAP_VALID	0x00000002	/* period data are valid during transfer */
-- 
2.25.1

[PATCH v5 02/16] ALSA: hda: Honor subformat when querying PCMs

[Cezary Rojewski]

Update mechanism for querying supported PCMs to allow for granular
format selection when container size is 32 bits. Currently always the
highest bit depth is selected, regardless of how many actual formats
codec in question supports.

Acked-by: Mark Brown <broonie@kernel.org>
Co-developed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 include/sound/hda_codec.h    |  5 ++--
 include/sound/hdaudio.h      |  3 ++-
 sound/hda/hdac_device.c      | 45 ++++++++++++++++++++----------------
 sound/pci/hda/hda_codec.c    |  2 ++
 sound/pci/hda/patch_hdmi.c   |  1 +
 sound/soc/codecs/hdac_hdmi.c |  3 ++-
 6 files changed, 35 insertions(+), 24 deletions(-)

diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h
index 5497dc9c396a..9c94ba7c183d 100644
--- a/include/sound/hda_codec.h
+++ b/include/sound/hda_codec.h
@@ -141,6 +141,7 @@ struct hda_pcm_stream {
 	hda_nid_t nid;	/* default NID to query rates/formats/bps, or set up */
 	u32 rates;	/* supported rates */
 	u64 formats;	/* supported formats (SNDRV_PCM_FMTBIT_) */
+	u32 subformats;	/* for S32_LE format, SNDRV_PCM_SUBFMTBIT_* */
 	unsigned int maxbps;	/* supported max. bit per sample */
 	const struct snd_pcm_chmap_elem *chmap; /* chmap to override */
 	struct hda_pcm_ops ops;
@@ -448,8 +449,8 @@ void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
 #define snd_hda_codec_cleanup_stream(codec, nid) \
 	__snd_hda_codec_cleanup_stream(codec, nid, 0)
 
-#define snd_hda_query_supported_pcm(codec, nid, ratesp, fmtsp, bpsp) \
-	snd_hdac_query_supported_pcm(&(codec)->core, nid, ratesp, fmtsp, bpsp)
+#define snd_hda_query_supported_pcm(codec, nid, ratesp, fmtsp, subfmtp, bpsp) \
+	snd_hdac_query_supported_pcm(&(codec)->core, nid, ratesp, fmtsp, subfmtp, bpsp)
 #define snd_hda_is_supported_format(codec, nid, fmt) \
 	snd_hdac_is_supported_format(&(codec)->core, nid, fmt)
 
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index dd7c87bbc613..7cfea9e7f6e4 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -146,7 +146,8 @@ unsigned int snd_hdac_calc_stream_format(unsigned int rate,
 					 unsigned int maxbps,
 					 unsigned short spdif_ctls);
 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
-				u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
+				 u32 *ratesp, u64 *formatsp, u32 *subformatsp,
+				 unsigned int *bpsp);
 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
 				  unsigned int format);
 
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
index bbf7bcdb449a..cde4d5c33771 100644
--- a/sound/hda/hdac_device.c
+++ b/sound/hda/hdac_device.c
@@ -817,15 +817,17 @@ static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
  * @nid: NID to query
  * @ratesp: the pointer to store the detected rate bitflags
  * @formatsp: the pointer to store the detected formats
+ * @subformatsp: the pointer to store the detected subformats for S32_LE format
  * @bpsp: the pointer to store the detected format widths
  *
- * Queries the supported PCM rates and formats.  The NULL @ratesp, @formatsp
- * or @bsps argument is ignored.
+ * Queries the supported PCM rates and formats.  The NULL @ratesp, @formatsp,
+ * @subformatsp or @bpsp argument is ignored.
  *
  * Returns 0 if successful, otherwise a negative error code.
  */
 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
-				 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
+				 u32 *ratesp, u64 *formatsp, u32 *subformatsp,
+				 unsigned int *bpsp)
 {
 	unsigned int i, val, wcaps;
 
@@ -848,9 +850,10 @@ int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
 		*ratesp = rates;
 	}
 
-	if (formatsp || bpsp) {
-		u64 formats = 0;
+	if (formatsp || subformatsp || bpsp) {
 		unsigned int streams, bps;
+		u32 subformats = 0;
+		u64 formats = 0;
 
 		streams = query_stream_param(codec, nid);
 		if (!streams)
@@ -866,24 +869,24 @@ int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
 				formats |= SNDRV_PCM_FMTBIT_S16_LE;
 				bps = 16;
 			}
-			if (wcaps & AC_WCAP_DIGITAL) {
-				if (val & AC_SUPPCM_BITS_32)
+			if (val & AC_SUPPCM_BITS_20) {
+				formats |= SNDRV_PCM_FMTBIT_S32_LE;
+				subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20;
+				bps = 20;
+			}
+			if (val & AC_SUPPCM_BITS_24) {
+				formats |= SNDRV_PCM_FMTBIT_S32_LE;
+				subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24;
+				bps = 24;
+			}
+			if (val & AC_SUPPCM_BITS_32) {
+				if (wcaps & AC_WCAP_DIGITAL) {
 					formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
-				if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
+				} else {
 					formats |= SNDRV_PCM_FMTBIT_S32_LE;
-				if (val & AC_SUPPCM_BITS_24)
-					bps = 24;
-				else if (val & AC_SUPPCM_BITS_20)
-					bps = 20;
-			} else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
-					  AC_SUPPCM_BITS_32)) {
-				formats |= SNDRV_PCM_FMTBIT_S32_LE;
-				if (val & AC_SUPPCM_BITS_32)
+					subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX;
 					bps = 32;
-				else if (val & AC_SUPPCM_BITS_24)
-					bps = 24;
-				else if (val & AC_SUPPCM_BITS_20)
-					bps = 20;
+				}
 			}
 		}
 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
@@ -911,6 +914,8 @@ int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
 		}
 		if (formatsp)
 			*formatsp = formats;
+		if (subformatsp)
+			*subformatsp = subformats;
 		if (bpsp)
 			*bpsp = bps;
 	}
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 01718b1fc9a7..12f02cdc9659 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -3163,6 +3163,7 @@ static int set_pcm_default_values(struct hda_codec *codec,
 		err = snd_hda_query_supported_pcm(codec, info->nid,
 				info->rates ? NULL : &info->rates,
 				info->formats ? NULL : &info->formats,
+				info->subformats ? NULL : &info->subformats,
 				info->maxbps ? NULL : &info->maxbps);
 		if (err < 0)
 			return err;
@@ -3757,6 +3758,7 @@ int snd_hda_multi_out_analog_open(struct hda_codec *codec,
 			snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
 						    &mout->spdif_rates,
 						    &mout->spdif_formats,
+						    NULL,
 						    &mout->spdif_maxbps);
 		}
 		mutex_lock(&codec->spdif_mutex);
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 1cde2a69bdb4..687b8b8fd7ac 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1977,6 +1977,7 @@ static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
 	err = snd_hda_query_supported_pcm(codec, cvt_nid,
 					  &per_cvt->rates,
 					  &per_cvt->formats,
+					  NULL,
 					  &per_cvt->maxbps);
 	if (err < 0)
 		return err;
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index b9c5ffbfb5ba..3e4f632d8665 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -670,6 +670,7 @@ hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt)
 	err = snd_hdac_query_supported_pcm(hdev, cvt->nid,
 			&cvt->params.rates,
 			&cvt->params.formats,
+			NULL,
 			&cvt->params.maxbps);
 	if (err < 0)
 		dev_err(&hdev->dev,
@@ -1577,7 +1578,7 @@ static int hdac_hdmi_create_dais(struct hdac_device *hdev,
 
 	list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 		ret = snd_hdac_query_supported_pcm(hdev, cvt->nid,
-					&rates,	&formats, &bps);
+					&rates,	&formats, NULL, &bps);
 		if (ret)
 			return ret;
 
-- 
2.25.1

[PATCH v5 03/16] ASoC: pcm: Honor subformat when configuring runtime

[Cezary Rojewski]

Subformat options are ignored when setting up hardware parameters and
assigning PCM stream capabilities. Account for them to allow for
granular format selection.

As there is only one user currently (format S32_LE), subformat is
represented by a simple u32 and stores flags only for that one user
alone. Such approach allows for alloc/free-less code until there are
more users on the horizon.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 include/sound/soc.h |  1 +
 sound/soc/soc-pcm.c | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7792c393e238..ccc31bc41e92 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -620,6 +620,7 @@ enum snd_soc_trigger_order {
 struct snd_soc_pcm_stream {
 	const char *stream_name;
 	u64 formats;			/* SNDRV_PCM_FMTBIT_* */
+	u32 subformats;			/* for S32_LE format, SNDRV_PCM_SUBFMTBIT_* */
 	unsigned int rates;		/* SNDRV_PCM_RATE_* */
 	unsigned int rate_min;		/* min rate */
 	unsigned int rate_max;		/* max rate */
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 323e4d7b6adf..9d688917cce2 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -554,6 +554,12 @@ static void soc_pcm_hw_update_format(struct snd_pcm_hardware *hw,
 	hw->formats &= p->formats;
 }
 
+static void soc_pcm_hw_update_subformat(struct snd_pcm_hardware *hw,
+					struct snd_soc_pcm_stream *p)
+{
+	hw->subformats &= p->subformats;
+}
+
 /**
  * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream
  * @rtd: ASoC PCM runtime
@@ -592,6 +598,7 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
 		soc_pcm_hw_update_chan(hw, cpu_stream);
 		soc_pcm_hw_update_rate(hw, cpu_stream);
 		soc_pcm_hw_update_format(hw, cpu_stream);
+		soc_pcm_hw_update_subformat(hw, cpu_stream);
 	}
 	cpu_chan_min = hw->channels_min;
 	cpu_chan_max = hw->channels_max;
@@ -613,6 +620,7 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
 		soc_pcm_hw_update_chan(hw, codec_stream);
 		soc_pcm_hw_update_rate(hw, codec_stream);
 		soc_pcm_hw_update_format(hw, codec_stream);
+		soc_pcm_hw_update_subformat(hw, codec_stream);
 	}
 
 	/* Verify both a valid CPU DAI and a valid CODEC DAI were found */
@@ -1713,6 +1721,7 @@ static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream)
 		soc_pcm_hw_update_rate(hw, cpu_stream);
 		soc_pcm_hw_update_chan(hw, cpu_stream);
 		soc_pcm_hw_update_format(hw, cpu_stream);
+		soc_pcm_hw_update_subformat(hw, cpu_stream);
 	}
 
 }
@@ -1750,6 +1759,7 @@ static void dpcm_runtime_setup_be_format(struct snd_pcm_substream *substream)
 			codec_stream = snd_soc_dai_get_pcm_stream(dai, stream);
 
 			soc_pcm_hw_update_format(hw, codec_stream);
+			soc_pcm_hw_update_subformat(hw, codec_stream);
 		}
 	}
 }
-- 
2.25.1

[PATCH v5 04/16] ALSA: hda: Upgrade stream-format infrastructure

[Cezary Rojewski]

Introduce a set of functions that ultimately facilite SDxFMT-related
calculations in atomic manner:

First, introduce snd_pcm_subformat_width() and snd_pcm_hw_params_bits()
helpers that separate the base functionality from the HDAudio-specific
one.

snd_hdac_format_normalize() - format converter. S20_LE, S24_LE and their
unsigned and BE friends are invalid from HDAudio perspective but still
can be specified as function argument due to compatibility reasons.

snd_hdac_stream_format_bits() - obtain just the bits-per-sample value.
Does not ignore subformat and msbits parameters.

snd_hdac_stream_format() and snd_hdac_spdif_stream_format() - obtain the
SDxFMT value given the audio format parameters. The former is stripped
away of spdif-related information. Useful for users that do not care
about them.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 include/sound/hdaudio.h    |   5 ++
 include/sound/pcm_params.h |   2 +
 sound/core/pcm_lib.c       |  34 ++++++++++
 sound/hda/hdac_device.c    | 124 +++++++++++++++++++++++++++++++++++++
 4 files changed, 165 insertions(+)

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 7cfea9e7f6e4..b00c631c4053 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -140,6 +140,11 @@ int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
 			     hda_nid_t *conn_list, int max_conns);
 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
 			   hda_nid_t *start_id);
+unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat,
+					 unsigned int maxbits);
+unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate);
+unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits,
+					  unsigned int rate, unsigned short spdif_ctls);
 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
 					 unsigned int channels,
 					 snd_pcm_format_t format,
diff --git a/include/sound/pcm_params.h b/include/sound/pcm_params.h
index ba184f49f7e1..fbf35df6e5cf 100644
--- a/include/sound/pcm_params.h
+++ b/include/sound/pcm_params.h
@@ -362,6 +362,8 @@ static inline int params_physical_width(const struct snd_pcm_hw_params *p)
 	return snd_pcm_format_physical_width(params_format(p));
 }
 
+int snd_pcm_hw_params_bits(const struct snd_pcm_hw_params *p);
+
 static inline void
 params_set_format(struct snd_pcm_hw_params *p, snd_pcm_format_t fmt)
 {
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index a11cd7d6295f..41103e5c43ce 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1706,6 +1706,40 @@ int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
 }
 EXPORT_SYMBOL(snd_pcm_hw_param_last);
 
+/**
+ * snd_pcm_hw_params_bits - Get the number of bits per the sample.
+ * @p: hardware parameters
+ *
+ * Return: The number of bits per sample based on the format,
+ * subformat and msbits the specified hw params has.
+ */
+int snd_pcm_hw_params_bits(const struct snd_pcm_hw_params *p)
+{
+	snd_pcm_subformat_t subformat = params_subformat(p);
+	snd_pcm_format_t format = params_format(p);
+
+	switch (format) {
+	case SNDRV_PCM_FORMAT_S32_LE:
+	case SNDRV_PCM_FORMAT_U32_LE:
+	case SNDRV_PCM_FORMAT_S32_BE:
+	case SNDRV_PCM_FORMAT_U32_BE:
+		switch (subformat) {
+		case SNDRV_PCM_SUBFORMAT_MSBITS_20:
+			return 20;
+		case SNDRV_PCM_SUBFORMAT_MSBITS_24:
+			return 24;
+		case SNDRV_PCM_SUBFORMAT_MSBITS_MAX:
+		case SNDRV_PCM_SUBFORMAT_STD:
+		default:
+			break;
+		}
+		fallthrough;
+	default:
+		return snd_pcm_format_width(format);
+	}
+}
+EXPORT_SYMBOL(snd_pcm_hw_params_bits);
+
 static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,
 				   void *arg)
 {
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
index cde4d5c33771..556bd24f4014 100644
--- a/sound/hda/hdac_device.c
+++ b/sound/hda/hdac_device.c
@@ -13,6 +13,7 @@
 #include <sound/hdaudio.h>
 #include <sound/hda_regmap.h>
 #include <sound/pcm.h>
+#include <sound/pcm_params.h>
 #include "local.h"
 
 static void setup_fg_nodes(struct hdac_device *codec);
@@ -725,6 +726,129 @@ static const struct hda_rate_tbl rate_bits[] = {
 	{ 0 } /* terminator */
 };
 
+static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format)
+{
+	switch (format) {
+	case SNDRV_PCM_FORMAT_S20_LE:
+	case SNDRV_PCM_FORMAT_S24_LE:
+		return SNDRV_PCM_FORMAT_S32_LE;
+
+	case SNDRV_PCM_FORMAT_U20_LE:
+	case SNDRV_PCM_FORMAT_U24_LE:
+		return SNDRV_PCM_FORMAT_U32_LE;
+
+	case SNDRV_PCM_FORMAT_S20_BE:
+	case SNDRV_PCM_FORMAT_S24_BE:
+		return SNDRV_PCM_FORMAT_S32_BE;
+
+	case SNDRV_PCM_FORMAT_U20_BE:
+	case SNDRV_PCM_FORMAT_U24_BE:
+		return SNDRV_PCM_FORMAT_U32_BE;
+
+	default:
+		return format;
+	}
+}
+
+/**
+ * snd_hdac_stream_format_bits - obtain bits per sample value.
+ * @format:	the PCM format.
+ * @subformat:	the PCM subformat.
+ * @maxbits:	the maximum bits per sample.
+ *
+ * Return: The number of bits per sample.
+ */
+unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat,
+					 unsigned int maxbits)
+{
+	struct snd_pcm_hw_params params;
+	unsigned int bits;
+
+	memset(&params, 0, sizeof(params));
+
+	params_set_format(&params, snd_hdac_format_normalize(format));
+	snd_mask_set(hw_param_mask(&params, SNDRV_PCM_HW_PARAM_SUBFORMAT),
+		     (__force unsigned int)subformat);
+
+	bits = snd_pcm_hw_params_bits(&params);
+	if (maxbits)
+		return min(bits, maxbits);
+	return bits;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits);
+
+/**
+ * snd_hdac_stream_format - convert format parameters to SDxFMT value.
+ * @channels:	the number of channels.
+ * @bits:	bits per sample.
+ * @rate:	the sample rate.
+ *
+ * Return: The format bitset or zero if invalid.
+ */
+unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate)
+{
+	unsigned int val = 0;
+	int i;
+
+	for (i = 0; rate_bits[i].hz; i++) {
+		if (rate_bits[i].hz == rate) {
+			val = rate_bits[i].hda_fmt;
+			break;
+		}
+	}
+
+	if (!rate_bits[i].hz)
+		return 0;
+
+	if (channels == 0 || channels > 8)
+		return 0;
+	val |= channels - 1;
+
+	switch (bits) {
+	case 8:
+		val |= AC_FMT_BITS_8;
+		break;
+	case 16:
+		val |= AC_FMT_BITS_16;
+		break;
+	case 20:
+		val |= AC_FMT_BITS_20;
+		break;
+	case 24:
+		val |= AC_FMT_BITS_24;
+		break;
+	case 32:
+		val |= AC_FMT_BITS_32;
+		break;
+	default:
+		return 0;
+	}
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_stream_format);
+
+/**
+ * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value.
+ * @channels:	the number of channels.
+ * @bits:	bits per sample.
+ * @rate:	the sample rate.
+ * @spdif_ctls:	HD-audio SPDIF status bits (0 if irrelevant).
+ *
+ * Return: The format bitset or zero if invalid.
+ */
+unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits,
+					  unsigned int rate, unsigned short spdif_ctls)
+{
+	unsigned int val = snd_hdac_stream_format(channels, bits, rate);
+
+	if (val && spdif_ctls & AC_DIG1_NONAUDIO)
+		val |= AC_FMT_TYPE_NON_PCM;
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format);
+
 /**
  * snd_hdac_calc_stream_format - calculate the format bitset
  * @rate: the sample rate
-- 
2.25.1

[PATCH v5 05/16] ALSA: hda: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/pci/hda/hda_controller.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index c42e9ffff9db..3e7bfeee84fd 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -151,7 +151,7 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
 	struct azx_dev *azx_dev = get_azx_dev(substream);
 	struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	unsigned int format_val, stream_tag;
+	unsigned int format_val, stream_tag, bits;
 	int err;
 	struct hda_spdif_out *spdif =
 		snd_hda_spdif_out_of_nid(apcm->codec, hinfo->nid);
@@ -165,11 +165,9 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
 	}
 
 	snd_hdac_stream_reset(azx_stream(azx_dev));
-	format_val = snd_hdac_calc_stream_format(runtime->rate,
-						runtime->channels,
-						runtime->format,
-						hinfo->maxbps,
-						ctls);
+	bits = snd_hdac_stream_format_bits(runtime->format, SNDRV_PCM_SUBFORMAT_STD, hinfo->maxbps);
+
+	format_val = snd_hdac_spdif_stream_format(runtime->channels, bits, runtime->rate, ctls);
 	if (!format_val) {
 		dev_err(chip->card->dev,
 			"invalid format_val, rate=%d, ch=%d, format=%d\n",
-- 
2.25.1

[PATCH v5 06/16] ALSA: hda/hdmi: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/pci/hda/patch_hdmi.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 687b8b8fd7ac..dff2d7221982 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1655,7 +1655,6 @@ static void hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 
 #define I915_SILENT_RATE		48000
 #define I915_SILENT_CHANNELS		2
-#define I915_SILENT_FORMAT		SNDRV_PCM_FORMAT_S16_LE
 #define I915_SILENT_FORMAT_BITS	16
 #define I915_SILENT_FMT_MASK		0xf
 
@@ -1668,8 +1667,8 @@ static void silent_stream_enable_i915(struct hda_codec *codec,
 				 per_pin->dev_id, I915_SILENT_RATE);
 
 	/* trigger silent stream generation in hw */
-	format = snd_hdac_calc_stream_format(I915_SILENT_RATE, I915_SILENT_CHANNELS,
-					     I915_SILENT_FORMAT, I915_SILENT_FORMAT_BITS, 0);
+	format = snd_hdac_stream_format(I915_SILENT_CHANNELS, I915_SILENT_FORMAT_BITS,
+					I915_SILENT_RATE);
 	snd_hda_codec_setup_stream(codec, per_pin->cvt_nid,
 				   I915_SILENT_FMT_MASK, I915_SILENT_FMT_MASK, format);
 	usleep_range(100, 200);
-- 
2.25.1

[PATCH v5 07/16] ALSA: hda/ca0132: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/pci/hda/patch_ca0132.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 748a3c40966e..aa312441604f 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -3022,8 +3022,7 @@ static int dma_convert_to_hda_format(struct hda_codec *codec,
 {
 	unsigned int format_val;
 
-	format_val = snd_hdac_calc_stream_format(sample_rate,
-				channels, SNDRV_PCM_FORMAT_S32_LE, 32, 0);
+	format_val = snd_hdac_stream_format(channels, 32, sample_rate);
 
 	if (hda_format)
 		*hda_format = (unsigned short)format_val;
-- 
2.25.1

[PATCH v5 08/16] ASoC: codecs: hda: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

While at it, complete PCM stream initialization with subformat options.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/codecs/hda-dai.c | 7 +++++--
 sound/soc/codecs/hda.c     | 2 ++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/hda-dai.c b/sound/soc/codecs/hda-dai.c
index 5371ff086261..7bd7ddcd810f 100644
--- a/sound/soc/codecs/hda-dai.c
+++ b/sound/soc/codecs/hda-dai.c
@@ -76,13 +76,16 @@ static int hda_codec_dai_prepare(struct snd_pcm_substream *substream, struct snd
 	struct hdac_stream *stream;
 	struct hda_codec *codec;
 	unsigned int format;
+	unsigned int bits;
 	int ret;
 
 	codec = dev_to_hda_codec(dai->dev);
 	stream = substream->runtime->private_data;
 	stream_info = snd_soc_dai_get_dma_data(dai, substream);
-	format = snd_hdac_calc_stream_format(runtime->rate, runtime->channels, runtime->format,
-					     runtime->sample_bits, 0);
+
+	bits = snd_hdac_stream_format_bits(runtime->format, runtime->subformat,
+					   stream_info->maxbps);
+	format = snd_hdac_stream_format(runtime->channels, bits, runtime->rate);
 
 	ret = snd_hda_codec_prepare(codec, stream_info, stream->stream_tag, format, substream);
 	if (ret < 0) {
diff --git a/sound/soc/codecs/hda.c b/sound/soc/codecs/hda.c
index d57b043d6bfe..d2117e36ddd1 100644
--- a/sound/soc/codecs/hda.c
+++ b/sound/soc/codecs/hda.c
@@ -52,6 +52,7 @@ static int hda_codec_create_dais(struct hda_codec *codec, int pcm_count,
 		stream->channels_max = pcm->stream[dir].channels_max;
 		stream->rates = pcm->stream[dir].rates;
 		stream->formats = pcm->stream[dir].formats;
+		stream->subformats = pcm->stream[dir].subformats;
 		stream->sig_bits = pcm->stream[dir].maxbps;
 
 capture_dais:
@@ -71,6 +72,7 @@ static int hda_codec_create_dais(struct hda_codec *codec, int pcm_count,
 		stream->channels_max = pcm->stream[dir].channels_max;
 		stream->rates = pcm->stream[dir].rates;
 		stream->formats = pcm->stream[dir].formats;
+		stream->subformats = pcm->stream[dir].subformats;
 		stream->sig_bits = pcm->stream[dir].maxbps;
 	}
 
-- 
2.25.1

[PATCH v5 09/16] ASoC: codecs: hdac_hda: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/codecs/hdac_hda.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
index 355f30779a34..0c589e46574d 100644
--- a/sound/soc/codecs/hdac_hda.c
+++ b/sound/soc/codecs/hdac_hda.c
@@ -215,18 +215,16 @@ static int hdac_hda_dai_hw_params(struct snd_pcm_substream *substream,
 	struct hdac_hda_priv *hda_pvt;
 	unsigned int format_val;
 	unsigned int maxbps;
+	unsigned int bits;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		maxbps = dai->driver->playback.sig_bits;
 	else
 		maxbps = dai->driver->capture.sig_bits;
+	bits = snd_hdac_stream_format_bits(params_format(params), SNDRV_PCM_SUBFORMAT_STD, maxbps);
 
 	hda_pvt = snd_soc_component_get_drvdata(component);
-	format_val = snd_hdac_calc_stream_format(params_rate(params),
-						 params_channels(params),
-						 params_format(params),
-						 maxbps,
-						 0);
+	format_val = snd_hdac_stream_format(params_channels(params), bits, params_rate(params));
 	if (!format_val) {
 		dev_err(dai->dev,
 			"invalid format_val, rate=%d, ch=%d, format=%d, maxbps=%d\n",
-- 
2.25.1

[PATCH v5 10/16] ASoC: codecs: hdac_hdmi: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/codecs/hdac_hdmi.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index 3e4f632d8665..b3b11225d483 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -468,13 +468,14 @@ static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
 	struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
 	struct hdac_hdmi_dai_port_map *dai_map;
 	struct hdac_hdmi_pcm *pcm;
+	unsigned int bits;
 	int format;
 
 	dai_map = &hdmi->dai_map[dai->id];
 
-	format = snd_hdac_calc_stream_format(params_rate(hparams),
-			params_channels(hparams), params_format(hparams),
-			dai->driver->playback.sig_bits, 0);
+	bits = snd_hdac_stream_format_bits(params_format(hparams), SNDRV_PCM_SUBFORMAT_STD,
+					   dai->driver->playback.sig_bits);
+	format = snd_hdac_stream_format(params_channels(hparams), bits, params_rate(hparams));
 
 	pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 	if (!pcm)
-- 
2.25.1

[PATCH v5 11/16] ASoC: Intel Skylake: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/intel/skylake/skl-pcm.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index d0c02e8a6785..4d52e3b35850 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -127,6 +127,7 @@ int skl_pcm_host_dma_prepare(struct device *dev, struct skl_pipe_params *params)
 	unsigned int format_val;
 	struct hdac_stream *hstream;
 	struct hdac_ext_stream *stream;
+	unsigned int bits;
 	int err;
 
 	hstream = snd_hdac_get_stream(bus, params->stream,
@@ -137,8 +138,9 @@ int skl_pcm_host_dma_prepare(struct device *dev, struct skl_pipe_params *params)
 	stream = stream_to_hdac_ext_stream(hstream);
 	snd_hdac_ext_stream_decouple(bus, stream, true);
 
-	format_val = snd_hdac_calc_stream_format(params->s_freq,
-			params->ch, params->format, params->host_bps, 0);
+	bits = snd_hdac_stream_format_bits(params->format, SNDRV_PCM_SUBFORMAT_STD,
+					   params->host_bps);
+	format_val = snd_hdac_stream_format(params->ch, bits, params->s_freq);
 
 	dev_dbg(dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
 		format_val, params->s_freq, params->ch, params->format);
@@ -165,6 +167,7 @@ int skl_pcm_link_dma_prepare(struct device *dev, struct skl_pipe_params *params)
 	struct hdac_ext_stream *stream;
 	struct hdac_ext_link *link;
 	unsigned char stream_tag;
+	unsigned int bits;
 
 	hstream = snd_hdac_get_stream(bus, params->stream,
 					params->link_dma_id + 1);
@@ -173,8 +176,10 @@ int skl_pcm_link_dma_prepare(struct device *dev, struct skl_pipe_params *params)
 
 	stream = stream_to_hdac_ext_stream(hstream);
 	snd_hdac_ext_stream_decouple(bus, stream, true);
-	format_val = snd_hdac_calc_stream_format(params->s_freq, params->ch,
-					params->format, params->link_bps, 0);
+
+	bits = snd_hdac_stream_format_bits(params->format, SNDRV_PCM_SUBFORMAT_STD,
+					   params->link_bps);
+	format_val = snd_hdac_stream_format(params->ch, bits, params->s_freq);
 
 	dev_dbg(dev, "format_val=%d, rate=%d, ch=%d, format=%d\n",
 		format_val, params->s_freq, params->ch, params->format);
-- 
2.25.1

[PATCH v5 12/16] ASoC: SOF: Intel: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/sof/intel/hda-dai-ops.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sof/intel/hda-dai-ops.c b/sound/soc/sof/intel/hda-dai-ops.c
index 87935554b1e4..55ce75db23e5 100644
--- a/sound/soc/sof/intel/hda-dai-ops.c
+++ b/sound/soc/sof/intel/hda-dai-ops.c
@@ -208,14 +208,16 @@ static unsigned int hda_calc_stream_format(struct snd_sof_dev *sdev,
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 	unsigned int link_bps;
 	unsigned int format_val;
+	unsigned int bits;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		link_bps = codec_dai->driver->playback.sig_bits;
 	else
 		link_bps = codec_dai->driver->capture.sig_bits;
 
-	format_val = snd_hdac_calc_stream_format(params_rate(params), params_channels(params),
-						 params_format(params), link_bps, 0);
+	bits = snd_hdac_stream_format_bits(params_format(params), SNDRV_PCM_SUBFORMAT_STD,
+					   link_bps);
+	format_val = snd_hdac_stream_format(params_channels(params), bits, params_rate(params));
 
 	dev_dbg(sdev->dev, "format_val=%#x, rate=%d, ch=%d, format=%d\n", format_val,
 		params_rate(params), params_channels(params), params_format(params));
@@ -238,11 +240,11 @@ static unsigned int generic_calc_stream_format(struct snd_sof_dev *sdev,
 					       struct snd_pcm_hw_params *params)
 {
 	unsigned int format_val;
+	unsigned int bits;
 
-	format_val = snd_hdac_calc_stream_format(params_rate(params), params_channels(params),
-						 params_format(params),
-						 params_physical_width(params),
-						 0);
+	bits = snd_hdac_stream_format_bits(params_format(params), SNDRV_PCM_SUBFORMAT_STD,
+					   params_physical_width(params));
+	format_val = snd_hdac_stream_format(params_channels(params), bits, params_rate(params));
 
 	dev_dbg(sdev->dev, "format_val=%#x, rate=%d, ch=%d, format=%d\n", format_val,
 		params_rate(params), params_channels(params), params_format(params));
@@ -258,6 +260,7 @@ static unsigned int dmic_calc_stream_format(struct snd_sof_dev *sdev,
 	snd_pcm_format_t format;
 	unsigned int channels;
 	unsigned int width;
+	unsigned int bits;
 
 	channels = params_channels(params);
 	format = params_format(params);
@@ -269,10 +272,8 @@ static unsigned int dmic_calc_stream_format(struct snd_sof_dev *sdev,
 		width = 32;
 	}
 
-	format_val = snd_hdac_calc_stream_format(params_rate(params), channels,
-						 format,
-						 width,
-						 0);
+	bits = snd_hdac_stream_format_bits(format, SNDRV_PCM_SUBFORMAT_STD, width);
+	format_val = snd_hdac_stream_format(channels, bits, params_rate(params));
 
 	dev_dbg(sdev->dev, "format_val=%#x, rate=%d, ch=%d, format=%d\n", format_val,
 		params_rate(params), channels, format);
-- 
2.25.1

[PATCH v5 13/16] ASoC: Intel: avs: Switch to new stream-format interface

[Cezary Rojewski]

To provide option for selecting different bit-per-sample than just the
maximum one, use the new format calculation mechanism.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/intel/avs/loader.c |  4 ++--
 sound/soc/intel/avs/path.c   |  2 +-
 sound/soc/intel/avs/pcm.c    | 19 ++++++++++++++-----
 sound/soc/intel/avs/probes.c |  3 +--
 4 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/sound/soc/intel/avs/loader.c b/sound/soc/intel/avs/loader.c
index 65dd8f140fc1..e83ce6a35755 100644
--- a/sound/soc/intel/avs/loader.c
+++ b/sound/soc/intel/avs/loader.c
@@ -371,7 +371,7 @@ int avs_hda_load_basefw(struct avs_dev *adev, struct firmware *fw)
 	hstream = hdac_stream(estream);
 
 	/* code loading performed with default format */
-	sdfmt = snd_hdac_calc_stream_format(48000, 1, SNDRV_PCM_FORMAT_S32_LE, 32, 0);
+	sdfmt = snd_hdac_stream_format(1, 32, 48000);
 	ret = snd_hdac_dsp_prepare(hstream, sdfmt, fw->size, &dmab);
 	if (ret < 0)
 		goto release_stream;
@@ -438,7 +438,7 @@ int avs_hda_load_library(struct avs_dev *adev, struct firmware *lib, u32 id)
 	stream = hdac_stream(estream);
 
 	/* code loading performed with default format */
-	sdfmt = snd_hdac_calc_stream_format(48000, 1, SNDRV_PCM_FORMAT_S32_LE, 32, 0);
+	sdfmt = snd_hdac_stream_format(1, 32, 48000);
 	ret = snd_hdac_dsp_prepare(stream, sdfmt, lib->size, &dmab);
 	if (ret < 0)
 		goto release_stream;
diff --git a/sound/soc/intel/avs/path.c b/sound/soc/intel/avs/path.c
index aa8b50b931c3..3aa16ee8d34c 100644
--- a/sound/soc/intel/avs/path.c
+++ b/sound/soc/intel/avs/path.c
@@ -87,7 +87,7 @@ static bool avs_test_hw_params(struct snd_pcm_hw_params *params,
 	return (params_rate(params) == fmt->sampling_freq &&
 		params_channels(params) == fmt->num_channels &&
 		params_physical_width(params) == fmt->bit_depth &&
-		params_width(params) == fmt->valid_bit_depth);
+		snd_pcm_hw_params_bits(params) == fmt->valid_bit_depth);
 }
 
 static struct avs_tplg_path *
diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index 463dbba18426..f586a804099a 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -335,20 +335,25 @@ static int avs_dai_hda_be_prepare(struct snd_pcm_substream *substream, struct sn
 {
 	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct hdac_ext_stream *link_stream = runtime->private_data;
+	struct snd_soc_pcm_stream *stream_info;
+	struct hdac_ext_stream *link_stream;
 	struct hdac_ext_link *link;
 	struct hda_codec *codec;
 	struct hdac_bus *bus;
 	unsigned int format_val;
+	unsigned int bits;
 	int ret;
 
+	link_stream = runtime->private_data;
 	if (link_stream->link_prepared)
 		return 0;
 
 	codec = dev_to_hda_codec(snd_soc_rtd_to_codec(rtd, 0)->dev);
 	bus = &codec->bus->core;
-	format_val = snd_hdac_calc_stream_format(runtime->rate, runtime->channels, runtime->format,
-						 runtime->sample_bits, 0);
+	stream_info = snd_soc_dai_get_pcm_stream(dai, substream->stream);
+	bits = snd_hdac_stream_format_bits(runtime->format, runtime->subformat,
+					   stream_info->sig_bits);
+	format_val = snd_hdac_stream_format(runtime->channels, bits, runtime->rate);
 
 	snd_hdac_ext_stream_reset(link_stream);
 	snd_hdac_ext_stream_setup(link_stream, format_val);
@@ -600,10 +605,12 @@ static int avs_dai_fe_hw_free(struct snd_pcm_substream *substream, struct snd_so
 static int avs_dai_fe_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_soc_pcm_stream *stream_info;
 	struct avs_dma_data *data;
 	struct avs_dev *adev = to_avs_dev(dai->dev);
 	struct hdac_ext_stream *host_stream;
 	unsigned int format_val;
+	unsigned int bits;
 	int ret;
 
 	data = snd_soc_dai_get_dma_data(dai, substream);
@@ -614,8 +621,10 @@ static int avs_dai_fe_prepare(struct snd_pcm_substream *substream, struct snd_so
 
 	snd_hdac_stream_reset(hdac_stream(host_stream));
 
-	format_val = snd_hdac_calc_stream_format(runtime->rate, runtime->channels, runtime->format,
-						 runtime->sample_bits, 0);
+	stream_info = snd_soc_dai_get_pcm_stream(dai, substream->stream);
+	bits = snd_hdac_stream_format_bits(runtime->format, runtime->subformat,
+					   stream_info->sig_bits);
+	format_val = snd_hdac_stream_format(runtime->channels, bits, runtime->rate);
 
 	ret = snd_hdac_stream_set_params(hdac_stream(host_stream), format_val);
 	if (ret < 0)
diff --git a/sound/soc/intel/avs/probes.c b/sound/soc/intel/avs/probes.c
index bdc6b30dc009..817e543036f2 100644
--- a/sound/soc/intel/avs/probes.c
+++ b/sound/soc/intel/avs/probes.c
@@ -140,8 +140,7 @@ static int avs_probe_compr_set_params(struct snd_compr_stream *cstream,
 	bps = snd_pcm_format_physical_width(format);
 	if (bps < 0)
 		return bps;
-	format_val = snd_hdac_calc_stream_format(params->codec.sample_rate, params->codec.ch_out,
-						 format, bps, 0);
+	format_val = snd_hdac_stream_format(params->codec.ch_out, bps, params->codec.sample_rate);
 	ret = snd_hdac_stream_set_params(hdac_stream(host_stream), format_val);
 	if (ret < 0)
 		return ret;
-- 
2.25.1

[PATCH v5 14/16] ALSA: hda: Drop snd_hdac_calc_stream_format()

[Cezary Rojewski]

There are no users of the function.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 include/sound/hdaudio.h |  5 ----
 sound/hda/hdac_device.c | 61 -----------------------------------------
 2 files changed, 66 deletions(-)

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index b00c631c4053..62a3cd154ff2 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -145,11 +145,6 @@ unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subfor
 unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate);
 unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits,
 					  unsigned int rate, unsigned short spdif_ctls);
-unsigned int snd_hdac_calc_stream_format(unsigned int rate,
-					 unsigned int channels,
-					 snd_pcm_format_t format,
-					 unsigned int maxbps,
-					 unsigned short spdif_ctls);
 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
 				 u32 *ratesp, u64 *formatsp, u32 *subformatsp,
 				 unsigned int *bpsp);
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c
index 556bd24f4014..7f7b67fe1b65 100644
--- a/sound/hda/hdac_device.c
+++ b/sound/hda/hdac_device.c
@@ -849,67 +849,6 @@ unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bi
 }
 EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format);
 
-/**
- * snd_hdac_calc_stream_format - calculate the format bitset
- * @rate: the sample rate
- * @channels: the number of channels
- * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
- * @maxbps: the max. bps
- * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
- *
- * Calculate the format bitset from the given rate, channels and th PCM format.
- *
- * Return zero if invalid.
- */
-unsigned int snd_hdac_calc_stream_format(unsigned int rate,
-					 unsigned int channels,
-					 snd_pcm_format_t format,
-					 unsigned int maxbps,
-					 unsigned short spdif_ctls)
-{
-	int i;
-	unsigned int val = 0;
-
-	for (i = 0; rate_bits[i].hz; i++)
-		if (rate_bits[i].hz == rate) {
-			val = rate_bits[i].hda_fmt;
-			break;
-		}
-	if (!rate_bits[i].hz)
-		return 0;
-
-	if (channels == 0 || channels > 8)
-		return 0;
-	val |= channels - 1;
-
-	switch (snd_pcm_format_width(format)) {
-	case 8:
-		val |= AC_FMT_BITS_8;
-		break;
-	case 16:
-		val |= AC_FMT_BITS_16;
-		break;
-	case 20:
-	case 24:
-	case 32:
-		if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
-			val |= AC_FMT_BITS_32;
-		else if (maxbps >= 24)
-			val |= AC_FMT_BITS_24;
-		else
-			val |= AC_FMT_BITS_20;
-		break;
-	default:
-		return 0;
-	}
-
-	if (spdif_ctls & AC_DIG1_NONAUDIO)
-		val |= AC_FMT_TYPE_NON_PCM;
-
-	return val;
-}
-EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
-
 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
 {
 	unsigned int val = 0;
-- 
2.25.1

[PATCH v5 15/16] ASoC: Intel: avs: Kill S24_LE format

[Cezary Rojewski]

Eliminate all occurrences of S24_LE within PCM code, both HOST and LINK
side. Replace those with MSBITS subformats to allow for granular
selection when S32_LE is the format of choice.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/intel/avs/pcm.c      | 20 +++++++++++++++-----
 sound/soc/intel/avs/topology.c | 13 ++++++++++++-
 2 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index f586a804099a..b6c48f88ca85 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -1073,8 +1073,10 @@ static const struct snd_pcm_hardware avs_pcm_hardware = {
 				  SNDRV_PCM_INFO_RESUME |
 				  SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
 	.formats		= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S24_LE |
 				  SNDRV_PCM_FMTBIT_S32_LE,
+	.subformats		= SNDRV_PCM_SUBFMTBIT_MSBITS_20 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_24 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_MAX,
 	.buffer_bytes_max	= AZX_MAX_BUF_SIZE,
 	.period_bytes_min	= 128,
 	.period_bytes_max	= AZX_MAX_BUF_SIZE / 2,
@@ -1225,8 +1227,10 @@ static const struct snd_soc_dai_driver i2s_dai_template = {
 		.rates		= SNDRV_PCM_RATE_8000_192000 |
 				  SNDRV_PCM_RATE_KNOT,
 		.formats	= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S24_LE |
 				  SNDRV_PCM_FMTBIT_S32_LE,
+		.subformats	= SNDRV_PCM_SUBFMTBIT_MSBITS_20 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_24 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_MAX,
 	},
 	.capture = {
 		.channels_min	= 1,
@@ -1234,8 +1238,10 @@ static const struct snd_soc_dai_driver i2s_dai_template = {
 		.rates		= SNDRV_PCM_RATE_8000_192000 |
 				  SNDRV_PCM_RATE_KNOT,
 		.formats	= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S24_LE |
 				  SNDRV_PCM_FMTBIT_S32_LE,
+		.subformats	= SNDRV_PCM_SUBFMTBIT_MSBITS_20 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_24 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_MAX,
 	},
 };
 
@@ -1310,16 +1316,20 @@ static const struct snd_soc_dai_driver hda_cpu_dai = {
 		.channels_max	= 8,
 		.rates		= SNDRV_PCM_RATE_8000_192000,
 		.formats	= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S24_LE |
 				  SNDRV_PCM_FMTBIT_S32_LE,
+		.subformats	= SNDRV_PCM_SUBFMTBIT_MSBITS_20 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_24 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_MAX,
 	},
 	.capture = {
 		.channels_min	= 1,
 		.channels_max	= 8,
 		.rates		= SNDRV_PCM_RATE_8000_192000,
 		.formats	= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S24_LE |
 				  SNDRV_PCM_FMTBIT_S32_LE,
+		.subformats	= SNDRV_PCM_SUBFMTBIT_MSBITS_20 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_24 |
+				  SNDRV_PCM_SUBFMTBIT_MSBITS_MAX,
 	},
 };
 
diff --git a/sound/soc/intel/avs/topology.c b/sound/soc/intel/avs/topology.c
index c74e9d622e4c..778236d3fd28 100644
--- a/sound/soc/intel/avs/topology.c
+++ b/sound/soc/intel/avs/topology.c
@@ -1514,8 +1514,16 @@ static int avs_dai_load(struct snd_soc_component *comp, int index,
 			struct snd_soc_dai_driver *dai_drv, struct snd_soc_tplg_pcm *pcm,
 			struct snd_soc_dai *dai)
 {
-	if (pcm)
+	u32 fe_subformats = SNDRV_PCM_SUBFMTBIT_MSBITS_20 |
+			    SNDRV_PCM_SUBFMTBIT_MSBITS_24 |
+			    SNDRV_PCM_SUBFMTBIT_MSBITS_MAX;
+
+	if (pcm) {
 		dai_drv->ops = &avs_dai_fe_ops;
+		dai_drv->capture.subformats = fe_subformats;
+		dai_drv->playback.subformats = fe_subformats;
+	}
+
 	return 0;
 }
 
@@ -1534,6 +1542,9 @@ static int avs_link_load(struct snd_soc_component *comp, int index, struct snd_s
 		/* Open LINK (BE) pipes last and close them first to prevent xruns. */
 		link->trigger[0] = SND_SOC_DPCM_TRIGGER_PRE;
 		link->trigger[1] = SND_SOC_DPCM_TRIGGER_PRE;
+	} else {
+		/* Do not ignore codec capabilities. */
+		link->dpcm_merged_format = 1;
 	}
 
 	return 0;
-- 
2.25.1

[PATCH v5 16/16] ASoC: Intel: avs: Unhardcode HDAudio BE DAI drivers description

[Cezary Rojewski]

To not expose more than in fact is supported by the codec, update CPU
DAI initialization procedure to rely on codec capabilities instead of
hardcoding them. This includes subformat which is currently ignored.

As capabilities for HDMI streams are initialized on PCM open, leave it
as is for now.

Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/intel/avs/pcm.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index b6c48f88ca85..4dfc5a1ebb7c 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -17,6 +17,7 @@
 #include "avs.h"
 #include "path.h"
 #include "topology.h"
+#include "../../codecs/hda.h"
 
 struct avs_dma_data {
 	struct avs_tplg_path_template *template;
@@ -1406,6 +1407,15 @@ static int avs_component_hda_probe(struct snd_soc_component *component)
 				ret = -ENOMEM;
 				goto exit;
 			}
+
+			if (!hda_codec_is_display(codec)) {
+				dais[i].playback.formats = pcm->stream[0].formats;
+				dais[i].playback.subformats = pcm->stream[0].subformats;
+				dais[i].playback.rates = pcm->stream[0].rates;
+				dais[i].playback.channels_min = pcm->stream[0].channels_min;
+				dais[i].playback.channels_max = pcm->stream[0].channels_max;
+				dais[i].playback.sig_bits = pcm->stream[0].maxbps;
+			}
 		}
 
 		if (pcm->stream[1].substreams) {
@@ -1416,6 +1426,15 @@ static int avs_component_hda_probe(struct snd_soc_component *component)
 				ret = -ENOMEM;
 				goto exit;
 			}
+
+			if (!hda_codec_is_display(codec)) {
+				dais[i].capture.formats = pcm->stream[1].formats;
+				dais[i].capture.subformats = pcm->stream[1].subformats;
+				dais[i].capture.rates = pcm->stream[1].rates;
+				dais[i].capture.channels_min = pcm->stream[1].channels_min;
+				dais[i].capture.channels_max = pcm->stream[1].channels_max;
+				dais[i].capture.sig_bits = pcm->stream[1].maxbps;
+			}
 		}
 
 		dai = snd_soc_register_dai(component, &dais[i], false);
-- 
2.25.1

Re: [PATCH v5 00/16] ALSA/ASoC: hda: Address format selection limitations and ambiguity

[Takashi Iwai]

On Fri, 17 Nov 2023 13:05:54 +0100,
Cezary Rojewski wrote:
> 
> Patchset aims to address format selection restrictions present currently
> in the HDAudio library. Formats which we are concerned about are 20 and
> 24 valid bits per sample within 32 bit depth container. One may identify
> them as S20_LE and S24_LE except that those, according to comments found
> in include/uapi/sound/asound.h, are for LSB-aligned scenarios. HDAudio
> streams expect MSB-aligned data, no matter if we are speaking of HOST
> (SDxFMT) or LINK (PPLCxFMT) side - chapter 4.5.1 of the public HDAudio
> specification. In short, S20_LE and S24_LE are invalid options.
> 
> Right now, given the implementation of snd_hdac_query_supported_pcm() 
> within sound/hda/hdac_device.c, even if a codec responds with: "I
> support all possible formats specified within HDAudio specification",
> there will be no option to open a 20/32 or 24/32 stream. The kernel will
> force the stream to be opened using the highest available bit depth.
> 
> After discussing subject initially with Jaroslav and Takashi, suggestion
> was made to utilize 'subformat' option to address the problem. The
> eye-opening discussion begun much earlier though, in 2019 [1].
> 
> Paired with PRs for alsa-utils [2] and alsa-lib [3].
> 
> 
> Flow of changes:
> 
> The very first patch adds MSBITS subformat options to allow for granular
> 20/32, 24/32 and 32/32 format selection. The next two make sure
> subformat is actually honored during runtime. Most of that code is based
> on format-related API.
> 
> Follow up is upgrade to the hda stream-format interface - several
> functions are added to make the granular format selection simple in the
> HDAudio world. Core of the implementation is based on the existing
> snd_hdac_calc_stream_format(). The next ten patches are straightforward
> switch from one interface to another with cleanup of now-unsed function
> as a finishing touch.
> 
> Last but not least - the avs-driver, on which the problem analyzed and
> debugged, is updated to no longer acknowledge S24_LE as a valid format
> option.
> 
> Results with skylake-driver and snd_hda_intel show status quo on our
> RVPs. PR filed on SOF github shows promising results too [4].
> 
> 
> Changes in v5:
> - reworded 'bps' to 'bits' in all occurrences.
> - fixed an issue of MSBITS_MAX not being reported for S32_LE as reported
>   by Jaroslav
> - snd_pcm_subformat_width() has been inlined into its only user:
>   snd_pcm_hw_params_bits() as suggested by Jaroslav.
> - updated commit messege for patch 01 as it was out of date given the
>   recent updates.
> 
> Changes in v4:
> - fixed compilation issues in sof-driver, patch 12/16, reported by ikp
> - fixed sparse warnings in patch 01/16, reported by ikp
> - updated commit message for patch 03: "ASoC pcm: Honor subformat when
>   configuring runtime", as snd_pcm_hw_copy() is gone since revision v3.
> 
> Changes in v3:
> - merged the first two patches as suggested by Jaroslav
> - re-authored patch 01 to Jaroslav, added my Co-developed-by.
> - added Jaroslav' Co-developed-by to patch 02.
> - 'subformats' field now S32_LE-specific. Given the fact that it is the
>   only format currently requiring subformat-intervention, functionality
>   is narrowed to reduce amount of memory allocations and cleanup.
>   Suggested by Jaroslav.
> - note to the above: the hdaudio part converted 1:1 as requested, patch
>   02/16
> - note #2: alsa part converted to S32_LE-specific yet without addition
>   of the chicken bit. Instead, struct snd_pcm_hardware is updated with
>   u32 subformat mask to do the job.
> - ALSA-core additions in form of snd_pcm_subformat_width() and
>   snd_pcm_hw_params_bps() relocated from 01/16 to the user, patch 05.
> 
> Changes in v2:
> - patch 01/17, introduced struct snd_pcm_subformat which task is to
>   represent subformat-mask on per format basis. Expectation is that
>   manipulated arrays of subformats always end with a sentinel entry
> - patch 01/17, added snd_pcm_hw_copy() as the copying snd_pcm_hardware
>   becomes non-trivial
> - patch 02/17, added hw_rule that produces final subformat mask
>   based on provided formats as suggested by Jaroslav
> - patch 04/17, soc_pcm_hw_update_subformat() refactored as the subformat
>   intersection becomes non-trivial
> - relevant functions releasing resources occupied by hda_pcm and
>   snd_pcm_runtime updated to also kfree() subformats
> - except for 16/17, no changes to patches past 04/17, retaining acks for
>   these
> 
> Changes in v1:
> - fixed UBSAN due to missing snd_pcm_subformat_names[] entries for new
>   subformats
> - as HDMI stream capabilities are assigned on PCM open, patch 16/17 has
>   been updated to ignore such codecs for now. A separate patchset will
>   take care of this case
> - params_bps() reworded to snd_pcm_hw_params_bps()
> - fixed compilation issues in sof-driver, patch 13/17
> 
> 
> [1]: https://lore.kernel.org/alsa-devel/20190905053302.9262-1-pawel.harlozinski@linux.intel.com/
> [2]: https://github.com/alsa-project/alsa-utils/pull/228
> [3]: https://github.com/alsa-project/alsa-lib/pull/342
> [4]: https://github.com/thesofproject/linux/pull/4539
> 
> Cezary Rojewski (15):
>   ALSA: hda: Honor subformat when querying PCMs
>   ASoC: pcm: Honor subformat when configuring runtime
>   ALSA: hda: Upgrade stream-format infrastructure
>   ALSA: hda: Switch to new stream-format interface
>   ALSA: hda/hdmi: Switch to new stream-format interface
>   ALSA: hda/ca0132: Switch to new stream-format interface
>   ASoC: codecs: hda: Switch to new stream-format interface
>   ASoC: codecs: hdac_hda: Switch to new stream-format interface
>   ASoC: codecs: hdac_hdmi: Switch to new stream-format interface
>   ASoC: Intel Skylake: Switch to new stream-format interface
>   ASoC: SOF: Intel: Switch to new stream-format interface
>   ASoC: Intel: avs: Switch to new stream-format interface
>   ALSA: hda: Drop snd_hdac_calc_stream_format()
>   ASoC: Intel: avs: Kill S24_LE format
>   ASoC: Intel: avs: Unhardcode HDAudio BE DAI drivers description
> 
> Jaroslav Kysela (1):
>   ALSA: pcm: Introduce MSBITS subformat interface

Now the patch 1 became the one from Jaroslav, it's a good move.
Jaroslav, could you take a look at the rest patches?
I'm going to merge this in this week unless any objection comes up.


thanks,

Takashi

Re: [PATCH v5 00/16] ALSA/ASoC: hda: Address format selection limitations and ambiguity

[Jaroslav Kysela]

On 27. 11. 23 10:37, Takashi Iwai wrote:

> Now the patch 1 became the one from Jaroslav, it's a good move.
> Jaroslav, could you take a look at the rest patches?
> I'm going to merge this in this week unless any objection comes up.

I'm fine with v5. You may add for patches where my tag is not present:

Acked-by: Jaroslav Kysela <perex@perex.cz>

					Jaroslav

-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.

Re: [PATCH v5 00/16] ALSA/ASoC: hda: Address format selection limitations and ambiguity

[Takashi Iwai]

On Mon, 27 Nov 2023 11:13:53 +0100,
Jaroslav Kysela wrote:
> 
> On 27. 11. 23 10:37, Takashi Iwai wrote:
> 
> > Now the patch 1 became the one from Jaroslav, it's a good move.
> > Jaroslav, could you take a look at the rest patches?
> > I'm going to merge this in this week unless any objection comes up.
> 
> I'm fine with v5. You may add for patches where my tag is not present:
> 
> Acked-by: Jaroslav Kysela <perex@perex.cz>

OK, thanks.

Now I merged all patches to for-next branch.


Takashi