diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/intel/boards/sof_sdw_rt1308.c | 158 |
1 files changed, 158 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..f078fb1aad02 --- /dev/null +++ b/sound/soc/intel/boards/sof_sdw_rt1308.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0-only +// 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/control.h> +#include <sound/soc.h> +#include <sound/soc-acpi.h> +#include <sound/soc-dapm.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 = asoc_substream_to_rtd(substream); + struct snd_soc_card *card = rtd->card; + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + 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(struct snd_soc_card *card, + const struct snd_soc_acpi_link_adr *link, + struct snd_soc_dai_link *dai_links, + struct sof_sdw_codec_info *info, + bool playback) +{ + /* Count amp number and do init on playback link only. */ + if (!playback) + return 0; + + 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; +} |