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Diffstat (limited to 'sound/soc/intel/boards/sof_sdw_rt1308.c')
-rw-r--r--sound/soc/intel/boards/sof_sdw_rt1308.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/sound/soc/intel/boards/sof_sdw_rt1308.c b/sound/soc/intel/boards/sof_sdw_rt1308.c
new file mode 100644
index 000000000000..321768e54d08
--- /dev/null
+++ b/sound/soc/intel/boards/sof_sdw_rt1308.c
@@ -0,0 +1,151 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2020 Intel Corporation
+
+/*
+ * sof_sdw_rt1308 - Helpers to handle RT1308 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"
+#include "../../codecs/rt1308.h"
+
+static const struct snd_soc_dapm_widget rt1308_widgets[] = {
+ SND_SOC_DAPM_SPK("Speaker", NULL),
+};
+
+/*
+ * dapm routes for rt1308 will be registered dynamically according
+ * to the number of rt1308 used. The first two entries will be registered
+ * for one codec case, and the last two entries are also registered
+ * if two 1308s are used.
+ */
+static const struct snd_soc_dapm_route rt1308_map[] = {
+ { "Speaker", NULL, "rt1308-1 SPOL" },
+ { "Speaker", NULL, "rt1308-1 SPOR" },
+ { "Speaker", NULL, "rt1308-2 SPOL" },
+ { "Speaker", NULL, "rt1308-2 SPOR" },
+};
+
+static const struct snd_kcontrol_new rt1308_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Speaker"),
+};
+
+static int first_spk_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_card *card = rtd->card;
+ int ret;
+
+ card->components = devm_kasprintf(card->dev, GFP_KERNEL,
+ "%s spk:rt1308",
+ card->components);
+ if (!card->components)
+ return -ENOMEM;
+
+ ret = snd_soc_add_card_controls(card, rt1308_controls,
+ ARRAY_SIZE(rt1308_controls));
+ if (ret) {
+ dev_err(card->dev, "rt1308 controls addition failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dapm_new_controls(&card->dapm, rt1308_widgets,
+ ARRAY_SIZE(rt1308_widgets));
+ if (ret) {
+ dev_err(card->dev, "rt1308 widgets addition failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dapm_add_routes(&card->dapm, rt1308_map, 2);
+ if (ret)
+ dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
+
+ return ret;
+}
+
+static int second_spk_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_card *card = rtd->card;
+ int ret;
+
+ ret = snd_soc_dapm_add_routes(&card->dapm, rt1308_map + 2, 2);
+ if (ret)
+ dev_err(rtd->dev, "failed to add second SPK map: %d\n", ret);
+
+ return ret;
+}
+
+static int all_spk_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int ret;
+
+ ret = first_spk_init(rtd);
+ if (ret)
+ return ret;
+
+ return second_spk_init(rtd);
+}
+
+static int rt1308_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ int clk_id, clk_freq, pll_out;
+ int err;
+
+ clk_id = RT1308_PLL_S_MCLK;
+ clk_freq = 38400000;
+
+ pll_out = params_rate(params) * 512;
+
+ /* Set rt1308 pll */
+ err = snd_soc_dai_set_pll(codec_dai, 0, clk_id, clk_freq, pll_out);
+ if (err < 0) {
+ dev_err(card->dev, "Failed to set RT1308 PLL: %d\n", err);
+ return err;
+ }
+
+ /* Set rt1308 sysclk */
+ err = snd_soc_dai_set_sysclk(codec_dai, RT1308_FS_SYS_S_PLL, pll_out,
+ SND_SOC_CLOCK_IN);
+ if (err < 0) {
+ dev_err(card->dev, "Failed to set RT1308 SYSCLK: %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+/* machine stream operations */
+struct snd_soc_ops sof_sdw_rt1308_i2s_ops = {
+ .hw_params = rt1308_i2s_hw_params,
+};
+
+int sof_sdw_rt1308_init(const struct snd_soc_acpi_link_adr *link,
+ struct snd_soc_dai_link *dai_links,
+ struct sof_sdw_codec_info *info,
+ bool playback)
+{
+ info->amp_num++;
+ if (info->amp_num == 1)
+ dai_links->init = first_spk_init;
+
+ if (info->amp_num == 2) {
+ /*
+ * if two 1308s are in one dai link, the init function
+ * in this dai link will be first set for the first speaker,
+ * and it should be reset to initialize all speakers when
+ * the second speaker is found.
+ */
+ if (dai_links->init)
+ dai_links->init = all_spk_init;
+ else
+ dai_links->init = second_spk_init;
+ }
+
+ return 0;
+}