ASoC: Intel: boards: add sof_sdw machine driver

This machine driver provides support for different configurations:

RT700, RT711, RT1308 (1x and 2x, I2S or SoundWire mode), and RT715
CometLake, Icelake, TigerLake.
PDM digital microphones
HDMI

To avoid introducing one driver per configuration, this common machine
driver relies on platform-specific information, tables and quirks to
dynamically create the relevant dailinks.

Unlike a lot of machine drivers, we use different DAI links for
SoundWire capture and playback since the Cadence PDIs can do capture
OR playback, not both simultaneously.

For each configuration, the card component string is updated so that UCM
can select the relevant parts.

Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200325220746.29601-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/sound/soc/intel/boards/sof_sdw_rt715.c b/sound/soc/intel/boards/sof_sdw_rt715.c
new file mode 100644
index 000000000000..321e1cbc03ed
--- /dev/null
+++ b/sound/soc/intel/boards/sof_sdw_rt715.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2020 Intel Corporation
+
+/*
+ *  sof_sdw_rt715 - Helpers to handle RT715 from generic machine driver
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include "sof_sdw_common.h"
+
+static int rt715_rtd_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+
+	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
+					  "%s mic:rt715",
+					  card->components);
+	if (!card->components)
+		return -ENOMEM;
+
+	return 0;
+}
+
+int sof_sdw_rt715_init(const struct snd_soc_acpi_link_adr *link,
+		       struct snd_soc_dai_link *dai_links,
+		       struct sof_sdw_codec_info *info,
+		       bool playback)
+{
+	/*
+	 * DAI ID is fixed at SDW_DMIC_DAI_ID for 715 to
+	 * keep sdw DMIC and HDMI setting static in UCM
+	 */
+	if (sof_sdw_quirk & SOF_RT715_DAI_ID_FIX)
+		dai_links->id = SDW_DMIC_DAI_ID;
+
+	dai_links->init = rt715_rtd_init;
+
+	return 0;
+}