topology: pre-process-dai: add support for hwcfg objects

Add supprt for hwcfg objects:
For ex:
Object.Base.hw_config."SSP0 hw_config 0" {
		id		0
		mclk_freq	24000000
		bclk_freq	4800000
		tdm_slot_width	25
	}

would get converted to:

SectionHWConfig {
        'SSP0 hw_config 0' {
                id 0
                format I2S
                bclk codec_consumer
                bclk_freq 4800000
                fsync codec_consumer
                fsync_freq 48000
                mclk codec_mclk_in
                mclk_freq 24000000
                tdm_slots 2
                tdm_slot_width 25
                tx_slots 3
                rx_slots 3
        }
}

and the corresponding SectionBE will be updated with the hwcfgs reference as:

	hw_configs [
		'SSP0 hw_config 0'
        ]

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

topology/Makefile.am

@@ -9,7 +9,7 @@ endif
 	rst2man $< > $@
 
 alsatplg_SOURCES = topology.c pre-processor.c pre-process-class.c pre-process-object.c \
-		    pre-process-dapm.c
+		    pre-process-dapm.c pre-process-dai.c
 
 noinst_HEADERS = topology.h pre-processor.h
 

topology/pre-process-dai.c

@@ -0,0 +1,47 @@
+/*
+  Copyright(c) 2021 Intel Corporation
+  All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of version 2 of the GNU General Public License 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.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+  The full GNU General Public License is included in this distribution
+  in the file called LICENSE.GPL.
+*/
+#include <errno.h>
+#include <stdio.h>
+#include <alsa/input.h>
+#include <alsa/output.h>
+#include <alsa/conf.h>
+#include <alsa/error.h>
+#include "topology.h"
+#include "pre-processor.h"
+
+int tplg_build_hw_cfg_object(struct tplg_pre_processor *tplg_pp,
+			       snd_config_t *obj_cfg, snd_config_t *parent)
+{
+	snd_config_t *hw_cfg, *obj;
+	const char *name;
+	int ret;
+
+	obj = tplg_object_get_instance_config(tplg_pp, obj_cfg);
+
+	name = tplg_object_get_name(tplg_pp, obj);
+	if (!name)
+		return -EINVAL;
+
+	ret = tplg_build_object_from_template(tplg_pp, obj_cfg, &hw_cfg, NULL, false);
+	if (ret < 0)
+		return ret;
+
+	return tplg_parent_update(tplg_pp, parent, "hw_configs", name);
+}

topology/pre-process-object.c

@@ -858,6 +858,13 @@ static int tplg_build_generic_object(struct tplg_pre_processor *tplg_pp, snd_con
 	return ret;
 }
 
+const struct config_template_items hwcfg_config = {
+	.int_config_ids = {"id", "bclk_freq", "bclk_invert", "fsync_invert", "fsync_freq",
+			   "mclk_freq", "pm_gate_clocks", "tdm_slots", "tdm_slot_width",
+			   "tx_slots", "rx_slots", "tx_channels", "rx_channels"},
+	.string_config_ids = {"format", "bclk", "fsync", "mclk"},
+};
+
 const struct config_template_items be_dai_config = {
 	.int_config_ids = {"id", "default_hw_conf_id", "symmertic_rates", "symmetric_channels",
 			   "symmetric_sample_bits"},
@@ -910,6 +917,8 @@ const struct build_function_map object_build_map[] = {
 	{"Base", "extops", "extops" ,&tplg_build_ops_object, &ops_config},
 	{"Base", "channel", "channel", &tplg_build_channel_object, &channel_config},
 	{"Base", "VendorToken", "SectionVendorTokens", &tplg_build_vendor_token_object, NULL},
+	{"Base", "hw_config", "SectionHWConfig", &tplg_build_hw_cfg_object,
+	 &hwcfg_config},
 	{"Base", "route", "SectionGraph", &tplg_build_dapm_route_object, NULL},
 	{"Widget", "", "SectionWidget", &tplg_build_generic_object, &widget_config},
 	{"Control", "mixer", "SectionControlMixer", &tplg_build_mixer_control,

topology/pre-processor.h

@@ -67,6 +67,8 @@ int tplg_build_bytes_control(struct tplg_pre_processor *tplg_pp, snd_config_t *o
 			      snd_config_t *parent);
 int tplg_build_dapm_route_object(struct tplg_pre_processor *tplg_pp, snd_config_t *obj_cfg,
 			      snd_config_t *parent);
+int tplg_build_hw_cfg_object(struct tplg_pre_processor *tplg_pp,
+			       snd_config_t *obj_cfg, snd_config_t *parent);
 int tplg_parent_update(struct tplg_pre_processor *tplg_pp, snd_config_t *parent,
 			  const char *section_name, const char *item_name);