ASoC: Intel: avs: Switch to acpi-nhlt

Merge series from Cezary Rojewski <cezary.rojewski@intel.com>:

The change is based on rafael/acpi-nhlt [1] immutable branch which
Rafael kindly prepared for me. Without the topmost changes to ACPI/NHLT,
the patches present will fail to compile.

Recent changes for the ACPI tree [2] refactored interfaces of the NHLT
table. Currently we have two implementations - one found in acpi
subsystem (unused) and one in sound/hda/. As NHLT is part of ACPI, idea
is to make the former useful and then switch all users of existing
sound/hda/intel-nhlt.c to this new interface over time and remove the
duplicate afterward.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/?h=acpi-nhlt
[2]: https://lore.kernel.org/linux-acpi/20240319083018.3159716-1-cezary.rojewski@intel.com/

5 files changed, 24 insertions, 27 deletions

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index 4b9e498e3303..38b61dfd1487 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -214,6 +214,7 @@ config SND_SOC_INTEL_AVS
 	depends on X86 || COMPILE_TEST
 	depends on PCI
 	depends on COMMON_CLK
+	select ACPI_NHLT if ACPI
 	select SND_SOC_ACPI if ACPI
 	select SND_SOC_TOPOLOGY
 	select SND_SOC_HDA
diff --git a/sound/soc/intel/avs/avs.h b/sound/soc/intel/avs/avs.h
index c905ecd0a108..101b1902a715 100644
--- a/sound/soc/intel/avs/avs.h
+++ b/sound/soc/intel/avs/avs.h
@@ -150,7 +150,6 @@ struct avs_dev {
 	struct completion fw_ready;
 	struct work_struct probe_work;
 
-	struct nhlt_acpi_table *nhlt;
 	struct list_head comp_list;
 	struct mutex comp_list_mutex;
 	struct list_head path_list;
diff --git a/sound/soc/intel/avs/board_selection.c b/sound/soc/intel/avs/board_selection.c
index 8360ce557401..290ea314ace8 100644
--- a/sound/soc/intel/avs/board_selection.c
+++ b/sound/soc/intel/avs/board_selection.c
@@ -10,10 +10,10 @@
 #include <linux/module.h>
 #include <linux/dmi.h>
 #include <linux/pci.h>
+#include <acpi/nhlt.h>
 #include <linux/platform_device.h>
 #include <sound/hda_codec.h>
 #include <sound/hda_register.h>
-#include <sound/intel-nhlt.h>
 #include <sound/soc-acpi.h>
 #include <sound/soc-component.h>
 #include "avs.h"
@@ -434,8 +434,7 @@ static int avs_register_dmic_board(struct avs_dev *adev)
 	struct snd_soc_acpi_mach mach = {{0}};
 	int ret;
 
-	if (!adev->nhlt ||
-	    !intel_nhlt_has_endpoint_type(adev->nhlt, NHLT_LINK_DMIC)) {
+	if (!acpi_nhlt_find_endpoint(ACPI_NHLT_LINKTYPE_PDM, -1, -1, -1)) {
 		dev_dbg(adev->dev, "no DMIC endpoints present\n");
 		return 0;
 	}
@@ -523,7 +522,7 @@ static int avs_register_i2s_boards(struct avs_dev *adev)
 	struct snd_soc_acpi_mach *mach;
 	int ret;
 
-	if (!adev->nhlt || !intel_nhlt_has_endpoint_type(adev->nhlt, NHLT_LINK_SSP)) {
+	if (!acpi_nhlt_find_endpoint(ACPI_NHLT_LINKTYPE_SSP, -1, -1, -1)) {
 		dev_dbg(adev->dev, "no I2S endpoints present\n");
 		return 0;
 	}
diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c
index a059bb6888d8..f56f9e19276a 100644
--- a/sound/soc/intel/avs/core.c
+++ b/sound/soc/intel/avs/core.c
@@ -14,15 +14,16 @@
 // foundation of this driver
 //
 
+#include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <acpi/nhlt.h>
 #include <sound/hda_codec.h>
 #include <sound/hda_i915.h>
 #include <sound/hda_register.h>
 #include <sound/hdaudio.h>
 #include <sound/hdaudio_ext.h>
 #include <sound/intel-dsp-config.h>
-#include <sound/intel-nhlt.h>
 #include "../../codecs/hda.h"
 #include "avs.h"
 #include "cldma.h"
@@ -215,9 +216,7 @@ static void avs_hda_probe_work(struct work_struct *work)
 	if (ret < 0)
 		return;
 
-	adev->nhlt = intel_nhlt_init(adev->dev);
-	if (!adev->nhlt)
-		dev_info(bus->dev, "platform has no NHLT\n");
+	acpi_nhlt_get_gbl_table();
 
 	avs_register_all_boards(adev);
 
@@ -543,8 +542,7 @@ static void avs_pci_remove(struct pci_dev *pci)
 
 	avs_unregister_all_boards(adev);
 
-	if (adev->nhlt)
-		intel_nhlt_free(adev->nhlt);
+	acpi_nhlt_put_gbl_table();
 	avs_debugfs_exit(adev);
 
 	if (avs_platattr_test(adev, CLDMA))
diff --git a/sound/soc/intel/avs/path.c b/sound/soc/intel/avs/path.c
index fa3fec339548..0a34d63e262e 100644
--- a/sound/soc/intel/avs/path.c
+++ b/sound/soc/intel/avs/path.c
@@ -6,7 +6,8 @@
 //          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
 //
 
-#include <sound/intel-nhlt.h>
+#include <linux/acpi.h>
+#include <acpi/nhlt.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include "avs.h"
@@ -143,10 +144,10 @@ static bool avs_dma_type_is_input(u32 dma_type)
 
 static int avs_copier_create(struct avs_dev *adev, struct avs_path_module *mod)
 {
-	struct nhlt_acpi_table *nhlt = adev->nhlt;
 	struct avs_tplg_module *t = mod->template;
 	struct avs_copier_cfg *cfg;
-	struct nhlt_specific_cfg *ep_blob;
+	struct acpi_nhlt_format_config *ep_blob;
+	struct acpi_nhlt_endpoint *ep;
 	union avs_connector_node_id node_id = {0};
 	size_t cfg_size, data_size;
 	void *data = NULL;
@@ -175,18 +176,18 @@ static int avs_copier_create(struct avs_dev *adev, struct avs_path_module *mod)
 		else
 			fmt = t->cfg_ext->copier.out_fmt;
 
-		ep_blob = intel_nhlt_get_endpoint_blob(adev->dev,
-			nhlt, t->cfg_ext->copier.vindex.i2s.instance,
-			NHLT_LINK_SSP, fmt->valid_bit_depth, fmt->bit_depth,
-			fmt->num_channels, fmt->sampling_freq, direction,
-			NHLT_DEVICE_I2S);
+		ep = acpi_nhlt_find_endpoint(ACPI_NHLT_LINKTYPE_SSP,
+					     ACPI_NHLT_DEVICETYPE_CODEC, direction,
+					     t->cfg_ext->copier.vindex.i2s.instance);
+		ep_blob = acpi_nhlt_endpoint_find_fmtcfg(ep, fmt->num_channels, fmt->sampling_freq,
+							 fmt->valid_bit_depth, fmt->bit_depth);
 		if (!ep_blob) {
 			dev_err(adev->dev, "no I2S ep_blob found\n");
 			return -ENOENT;
 		}
 
-		data = ep_blob->caps;
-		data_size = ep_blob->size;
+		data = ep_blob->config.capabilities;
+		data_size = ep_blob->config.capabilities_size;
 		/* I2S gateway's vindex is statically assigned in topology */
 		node_id.vindex = t->cfg_ext->copier.vindex.val;
 
@@ -200,17 +201,16 @@ static int avs_copier_create(struct avs_dev *adev, struct avs_path_module *mod)
 		else
 			fmt = t->in_fmt;
 
-		ep_blob = intel_nhlt_get_endpoint_blob(adev->dev, nhlt, 0,
-				NHLT_LINK_DMIC, fmt->valid_bit_depth,
-				fmt->bit_depth, fmt->num_channels,
-				fmt->sampling_freq, direction, NHLT_DEVICE_DMIC);
+		ep = acpi_nhlt_find_endpoint(ACPI_NHLT_LINKTYPE_PDM, -1, direction, 0);
+		ep_blob = acpi_nhlt_endpoint_find_fmtcfg(ep, fmt->num_channels, fmt->sampling_freq,
+							 fmt->valid_bit_depth, fmt->bit_depth);
 		if (!ep_blob) {
 			dev_err(adev->dev, "no DMIC ep_blob found\n");
 			return -ENOENT;
 		}
 
-		data = ep_blob->caps;
-		data_size = ep_blob->size;
+		data = ep_blob->config.capabilities;
+		data_size = ep_blob->config.capabilities_size;
 		/* DMIC gateway's vindex is statically assigned in topology */
 		node_id.vindex = t->cfg_ext->copier.vindex.val;