diff options
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/meson/Kconfig | 4 | ||||
| -rw-r--r-- | sound/soc/meson/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/meson/axg-card.c | 403 | ||||
| -rw-r--r-- | sound/soc/meson/meson-card-utils.c | 385 | ||||
| -rw-r--r-- | sound/soc/meson/meson-card.h | 55 |
5 files changed, 473 insertions, 376 deletions
diff --git a/sound/soc/meson/Kconfig b/sound/soc/meson/Kconfig index 19de97ae4ce9..347fa78e309a 100644 --- a/sound/soc/meson/Kconfig +++ b/sound/soc/meson/Kconfig @@ -59,6 +59,7 @@ config SND_MESON_AXG_TDMOUT config SND_MESON_AXG_SOUND_CARD tristate "Amlogic AXG Sound Card Support" select SND_MESON_AXG_TDM_INTERFACE + select SND_MESON_CARD_UTILS imply SND_MESON_AXG_FRDDR imply SND_MESON_AXG_TODDR imply SND_MESON_AXG_TDMIN @@ -94,6 +95,9 @@ config SND_MESON_AXG_PDM Select Y or M to add support for PDM input embedded in the Amlogic AXG SoC family +config SND_MESON_CARD_UTILS + tristate + config SND_MESON_CODEC_GLUE tristate diff --git a/sound/soc/meson/Makefile b/sound/soc/meson/Makefile index 80f9113701b3..bef2b72fd7a7 100644 --- a/sound/soc/meson/Makefile +++ b/sound/soc/meson/Makefile @@ -19,6 +19,7 @@ snd-soc-meson-axg-sound-card-objs := axg-card.o snd-soc-meson-axg-spdifin-objs := axg-spdifin.o snd-soc-meson-axg-spdifout-objs := axg-spdifout.o snd-soc-meson-axg-pdm-objs := axg-pdm.o +snd-soc-meson-card-utils-objs := meson-card-utils.o snd-soc-meson-codec-glue-objs := meson-codec-glue.o snd-soc-meson-g12a-tohdmitx-objs := g12a-tohdmitx.o @@ -34,5 +35,6 @@ obj-$(CONFIG_SND_MESON_AXG_SOUND_CARD) += snd-soc-meson-axg-sound-card.o obj-$(CONFIG_SND_MESON_AXG_SPDIFIN) += snd-soc-meson-axg-spdifin.o obj-$(CONFIG_SND_MESON_AXG_SPDIFOUT) += snd-soc-meson-axg-spdifout.o obj-$(CONFIG_SND_MESON_AXG_PDM) += snd-soc-meson-axg-pdm.o +obj-$(CONFIG_SND_MESON_CARD_UTILS) += snd-soc-meson-card-utils.o obj-$(CONFIG_SND_MESON_CODEC_GLUE) += snd-soc-meson-codec-glue.o obj-$(CONFIG_SND_MESON_G12A_TOHDMITX) += snd-soc-meson-g12a-tohdmitx.o diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c index 1f698adde506..372dc696cc8e 100644 --- a/sound/soc/meson/axg-card.c +++ b/sound/soc/meson/axg-card.c @@ -9,11 +9,7 @@ #include <sound/soc-dai.h> #include "axg-tdm.h" - -struct axg_card { - struct snd_soc_card card; - void **link_data; -}; +#include "meson-card.h" struct axg_dai_link_tdm_mask { u32 tx; @@ -41,161 +37,15 @@ static const struct snd_soc_pcm_stream codec_params = { .channels_max = 8, }; -#define PREFIX "amlogic," - -static int axg_card_reallocate_links(struct axg_card *priv, - unsigned int num_links) -{ - struct snd_soc_dai_link *links; - void **ldata; - - links = krealloc(priv->card.dai_link, - num_links * sizeof(*priv->card.dai_link), - GFP_KERNEL | __GFP_ZERO); - ldata = krealloc(priv->link_data, - num_links * sizeof(*priv->link_data), - GFP_KERNEL | __GFP_ZERO); - - if (!links || !ldata) { - dev_err(priv->card.dev, "failed to allocate links\n"); - return -ENOMEM; - } - - priv->card.dai_link = links; - priv->link_data = ldata; - priv->card.num_links = num_links; - return 0; -} - -static int axg_card_parse_dai(struct snd_soc_card *card, - struct device_node *node, - struct device_node **dai_of_node, - const char **dai_name) -{ - struct of_phandle_args args; - int ret; - - if (!dai_name || !dai_of_node || !node) - return -EINVAL; - - ret = of_parse_phandle_with_args(node, "sound-dai", - "#sound-dai-cells", 0, &args); - if (ret) { - if (ret != -EPROBE_DEFER) - dev_err(card->dev, "can't parse dai %d\n", ret); - return ret; - } - *dai_of_node = args.np; - - return snd_soc_get_dai_name(&args, dai_name); -} - -static int axg_card_set_link_name(struct snd_soc_card *card, - struct snd_soc_dai_link *link, - struct device_node *node, - const char *prefix) -{ - char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s", - prefix, node->full_name); - if (!name) - return -ENOMEM; - - link->name = name; - link->stream_name = name; - - return 0; -} - -static void axg_card_clean_references(struct axg_card *priv) -{ - struct snd_soc_card *card = &priv->card; - struct snd_soc_dai_link *link; - struct snd_soc_dai_link_component *codec; - struct snd_soc_aux_dev *aux; - int i, j; - - if (card->dai_link) { - for_each_card_prelinks(card, i, link) { - if (link->cpus) - of_node_put(link->cpus->of_node); - for_each_link_codecs(link, j, codec) - of_node_put(codec->of_node); - } - } - - if (card->aux_dev) { - for_each_card_pre_auxs(card, i, aux) - of_node_put(aux->dlc.of_node); - } - - kfree(card->dai_link); - kfree(priv->link_data); -} - -static int axg_card_add_aux_devices(struct snd_soc_card *card) -{ - struct device_node *node = card->dev->of_node; - struct snd_soc_aux_dev *aux; - int num, i; - - num = of_count_phandle_with_args(node, "audio-aux-devs", NULL); - if (num == -ENOENT) { - /* - * It is ok to have no auxiliary devices but for this card it - * is a strange situtation. Let's warn the about it. - */ - dev_warn(card->dev, "card has no auxiliary devices\n"); - return 0; - } else if (num < 0) { - dev_err(card->dev, "error getting auxiliary devices: %d\n", - num); - return num; - } - - aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL); - if (!aux) - return -ENOMEM; - card->aux_dev = aux; - card->num_aux_devs = num; - - for_each_card_pre_auxs(card, i, aux) { - aux->dlc.of_node = - of_parse_phandle(node, "audio-aux-devs", i); - if (!aux->dlc.of_node) - return -EINVAL; - } - - return 0; -} - static int axg_card_tdm_be_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct axg_card *priv = snd_soc_card_get_drvdata(rtd->card); + struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card); struct axg_dai_link_tdm_data *be = (struct axg_dai_link_tdm_data *)priv->link_data[rtd->num]; - struct snd_soc_dai *codec_dai; - unsigned int mclk; - int ret, i; - - if (be->mclk_fs) { - mclk = params_rate(params) * be->mclk_fs; - - for_each_rtd_codec_dai(rtd, i, codec_dai) { - ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, - SND_SOC_CLOCK_IN); - if (ret && ret != -ENOTSUPP) - return ret; - } - - ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, - SND_SOC_CLOCK_OUT); - if (ret && ret != -ENOTSUPP) - return ret; - } - return 0; + return meson_card_i2s_set_sysclk(substream, params, be->mclk_fs); } static const struct snd_soc_ops axg_card_tdm_be_ops = { @@ -204,7 +54,7 @@ static const struct snd_soc_ops axg_card_tdm_be_ops = { static int axg_card_tdm_dai_init(struct snd_soc_pcm_runtime *rtd) { - struct axg_card *priv = snd_soc_card_get_drvdata(rtd->card); + struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card); struct axg_dai_link_tdm_data *be = (struct axg_dai_link_tdm_data *)priv->link_data[rtd->num]; struct snd_soc_dai *codec_dai; @@ -234,7 +84,7 @@ static int axg_card_tdm_dai_init(struct snd_soc_pcm_runtime *rtd) static int axg_card_tdm_dai_lb_init(struct snd_soc_pcm_runtime *rtd) { - struct axg_card *priv = snd_soc_card_get_drvdata(rtd->card); + struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card); struct axg_dai_link_tdm_data *be = (struct axg_dai_link_tdm_data *)priv->link_data[rtd->num]; int ret; @@ -253,14 +103,14 @@ static int axg_card_tdm_dai_lb_init(struct snd_soc_pcm_runtime *rtd) static int axg_card_add_tdm_loopback(struct snd_soc_card *card, int *index) { - struct axg_card *priv = snd_soc_card_get_drvdata(card); + struct meson_card *priv = snd_soc_card_get_drvdata(card); struct snd_soc_dai_link *pad = &card->dai_link[*index]; struct snd_soc_dai_link *lb; struct snd_soc_dai_link_component *dlc; int ret; /* extend links */ - ret = axg_card_reallocate_links(priv, card->num_links + 1); + ret = meson_card_reallocate_links(card, card->num_links + 1); if (ret) return ret; @@ -304,32 +154,6 @@ static int axg_card_add_tdm_loopback(struct snd_soc_card *card, return 0; } -static unsigned int axg_card_parse_daifmt(struct device_node *node, - struct device_node *cpu_node) -{ - struct device_node *bitclkmaster = NULL; - struct device_node *framemaster = NULL; - unsigned int daifmt; - - daifmt = snd_soc_of_parse_daifmt(node, PREFIX, - &bitclkmaster, &framemaster); - daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; - - /* If no master is provided, default to cpu master */ - if (!bitclkmaster || bitclkmaster == cpu_node) { - daifmt |= (!framemaster || framemaster == cpu_node) ? - SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM; - } else { - daifmt |= (!framemaster || framemaster == cpu_node) ? - SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM; - } - - of_node_put(bitclkmaster); - of_node_put(framemaster); - - return daifmt; -} - static int axg_card_parse_cpu_tdm_slots(struct snd_soc_card *card, struct snd_soc_dai_link *link, struct device_node *node, @@ -424,7 +248,7 @@ static int axg_card_parse_tdm(struct snd_soc_card *card, struct device_node *node, int *index) { - struct axg_card *priv = snd_soc_card_get_drvdata(card); + struct meson_card *priv = snd_soc_card_get_drvdata(card); struct snd_soc_dai_link *link = &card->dai_link[*index]; struct axg_dai_link_tdm_data *be; int ret; @@ -438,7 +262,7 @@ static int axg_card_parse_tdm(struct snd_soc_card *card, /* Setup tdm link */ link->ops = &axg_card_tdm_be_ops; link->init = axg_card_tdm_dai_init; - link->dai_fmt = axg_card_parse_daifmt(node, link->cpus->of_node); + link->dai_fmt = meson_card_parse_daifmt(node, link->cpus->of_node); of_property_read_u32(node, "mclk-fs", &be->mclk_fs); @@ -462,97 +286,24 @@ static int axg_card_parse_tdm(struct snd_soc_card *card, return 0; } -static int axg_card_set_be_link(struct snd_soc_card *card, - struct snd_soc_dai_link *link, - struct device_node *node) -{ - struct snd_soc_dai_link_component *codec; - struct device_node *np; - int ret, num_codecs; - - link->no_pcm = 1; - link->dpcm_playback = 1; - link->dpcm_capture = 1; - - num_codecs = of_get_child_count(node); - if (!num_codecs) { - dev_err(card->dev, "be link %s has no codec\n", - node->full_name); - return -EINVAL; - } - - codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL); - if (!codec) - return -ENOMEM; - - link->codecs = codec; - link->num_codecs = num_codecs; - - for_each_child_of_node(node, np) { - ret = axg_card_parse_dai(card, np, &codec->of_node, - &codec->dai_name); - if (ret) { - of_node_put(np); - return ret; - } - - codec++; - } - - ret = axg_card_set_link_name(card, link, node, "be"); - if (ret) - dev_err(card->dev, "error setting %pOFn link name\n", np); - - return ret; -} - -static int axg_card_set_fe_link(struct snd_soc_card *card, - struct snd_soc_dai_link *link, - struct device_node *node, - bool is_playback) -{ - struct snd_soc_dai_link_component *codec; - - codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL); - if (!codec) - return -ENOMEM; - - link->codecs = codec; - link->num_codecs = 1; - - link->dynamic = 1; - link->dpcm_merged_format = 1; - link->dpcm_merged_chan = 1; - link->dpcm_merged_rate = 1; - link->codecs->dai_name = "snd-soc-dummy-dai"; - link->codecs->name = "snd-soc-dummy"; - - if (is_playback) - link->dpcm_playback = 1; - else - link->dpcm_capture = 1; - - return axg_card_set_link_name(card, link, node, "fe"); -} - static int axg_card_cpu_is_capture_fe(struct device_node *np) { - return of_device_is_compatible(np, PREFIX "axg-toddr"); + return of_device_is_compatible(np, DT_PREFIX "axg-toddr"); } static int axg_card_cpu_is_playback_fe(struct device_node *np) { - return of_device_is_compatible(np, PREFIX "axg-frddr"); + return of_device_is_compatible(np, DT_PREFIX "axg-frddr"); } static int axg_card_cpu_is_tdm_iface(struct device_node *np) { - return of_device_is_compatible(np, PREFIX "axg-tdm-iface"); + return of_device_is_compatible(np, DT_PREFIX "axg-tdm-iface"); } static int axg_card_cpu_is_codec(struct device_node *np) { - return of_device_is_compatible(np, PREFIX "g12a-tohdmitx"); + return of_device_is_compatible(np, DT_PREFIX "g12a-tohdmitx"); } static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np, @@ -569,17 +320,17 @@ static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np, dai_link->cpus = cpu; dai_link->num_cpus = 1; - ret = axg_card_parse_dai(card, np, &dai_link->cpus->of_node, - &dai_link->cpus->dai_name); + ret = meson_card_parse_dai(card, np, &dai_link->cpus->of_node, + &dai_link->cpus->dai_name); if (ret) return ret; if (axg_card_cpu_is_playback_fe(dai_link->cpus->of_node)) - ret = axg_card_set_fe_link(card, dai_link, np, true); + ret = meson_card_set_fe_link(card, dai_link, np, true); else if (axg_card_cpu_is_capture_fe(dai_link->cpus->of_node)) - ret = axg_card_set_fe_link(card, dai_link, np, false); + ret = meson_card_set_fe_link(card, dai_link, np, false); else - ret = axg_card_set_be_link(card, dai_link, np); + ret = meson_card_set_be_link(card, dai_link, np); if (ret) return ret; @@ -592,121 +343,21 @@ static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np, return ret; } -static int axg_card_add_links(struct snd_soc_card *card) -{ - struct axg_card *priv = snd_soc_card_get_drvdata(card); - struct device_node *node = card->dev->of_node; - struct device_node *np; - int num, i, ret; - - num = of_get_child_count(node); - if (!num) { - dev_err(card->dev, "card has no links\n"); - return -EINVAL; - } - - ret = axg_card_reallocate_links(priv, num); - if (ret) - return ret; - - i = 0; - for_each_child_of_node(node, np) { - ret = axg_card_add_link(card, np, &i); - if (ret) { - of_node_put(np); - return ret; - } - - i++; - } - - return 0; -} - -static int axg_card_parse_of_optional(struct snd_soc_card *card, - const char *propname, - int (*func)(struct snd_soc_card *c, - const char *p)) -{ - /* If property is not provided, don't fail ... */ - if (!of_property_read_bool(card->dev->of_node, propname)) - return 0; - - /* ... but do fail if it is provided and the parsing fails */ - return func(card, propname); -} +static const struct meson_card_match_data axg_card_match_data = { + .add_link = axg_card_add_link, +}; static const struct of_device_id axg_card_of_match[] = { - { .compatible = "amlogic,axg-sound-card", }, - {} + { + .compatible = "amlogic,axg-sound-card", + .data = &axg_card_match_data, + }, {} }; MODULE_DEVICE_TABLE(of, axg_card_of_match); -static int axg_card_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct axg_card *priv; - int ret; - - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - platform_set_drvdata(pdev, priv); - snd_soc_card_set_drvdata(&priv->card, priv); - - priv->card.owner = THIS_MODULE; - priv->card.dev = dev; - - ret = snd_soc_of_parse_card_name(&priv->card, "model"); - if (ret < 0) - return ret; - - ret = axg_card_parse_of_optional(&priv->card, "audio-routing", - snd_soc_of_parse_audio_routing); - if (ret) { - dev_err(dev, "error while parsing routing\n"); - return ret; - } - - ret = axg_card_parse_of_optional(&priv->card, "audio-widgets", - snd_soc_of_parse_audio_simple_widgets); - if (ret) { - dev_err(dev, "error while parsing widgets\n"); - return ret; - } - - ret = axg_card_add_links(&priv->card); - if (ret) - goto out_err; - - ret = axg_card_add_aux_devices(&priv->card); - if (ret) - goto out_err; - - ret = devm_snd_soc_register_card(dev, &priv->card); - if (ret) - goto out_err; - - return 0; - -out_err: - axg_card_clean_references(priv); - return ret; -} - -static int axg_card_remove(struct platform_device *pdev) -{ - struct axg_card *priv = platform_get_drvdata(pdev); - - axg_card_clean_references(priv); - - return 0; -} - static struct platform_driver axg_card_pdrv = { - .probe = axg_card_probe, - .remove = axg_card_remove, + .probe = meson_card_probe, + .remove = meson_card_remove, .driver = { .name = "axg-sound-card", .of_match_table = axg_card_of_match, diff --git a/sound/soc/meson/meson-card-utils.c b/sound/soc/meson/meson-card-utils.c new file mode 100644 index 000000000000..a70d244ef88b --- /dev/null +++ b/sound/soc/meson/meson-card-utils.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2020 BayLibre, SAS. +// Author: Jerome Brunet <jbrunet@baylibre.com> + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <sound/soc.h> + +#include "meson-card.h" + +int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + unsigned int mclk_fs) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai; + unsigned int mclk; + int ret, i; + + if (!mclk_fs) + return 0; + + mclk = params_rate(params) * mclk_fs; + + for_each_rtd_codec_dai(rtd, i, codec_dai) { + ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, + SND_SOC_CLOCK_IN); + if (ret && ret != -ENOTSUPP) + return ret; + } + + ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk, + SND_SOC_CLOCK_OUT); + if (ret && ret != -ENOTSUPP) + return ret; + + return 0; +} +EXPORT_SYMBOL_GPL(meson_card_i2s_set_sysclk); + +int meson_card_reallocate_links(struct snd_soc_card *card, + unsigned int num_links) +{ + struct meson_card *priv = snd_soc_card_get_drvdata(card); + struct snd_soc_dai_link *links; + void **ldata; + + links = krealloc(priv->card.dai_link, + num_links * sizeof(*priv->card.dai_link), + GFP_KERNEL | __GFP_ZERO); + ldata = krealloc(priv->link_data, + num_links * sizeof(*priv->link_data), + GFP_KERNEL | __GFP_ZERO); + + if (!links || !ldata) { + dev_err(priv->card.dev, "failed to allocate links\n"); + return -ENOMEM; + } + + priv->card.dai_link = links; + priv->link_data = ldata; + priv->card.num_links = num_links; + return 0; +} +EXPORT_SYMBOL_GPL(meson_card_reallocate_links); + +int meson_card_parse_dai(struct snd_soc_card *card, + struct device_node *node, + struct device_node **dai_of_node, + const char **dai_name) +{ + struct of_phandle_args args; + int ret; + + if (!dai_name || !dai_of_node || !node) + return -EINVAL; + + ret = of_parse_phandle_with_args(node, "sound-dai", + "#sound-dai-cells", 0, &args); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(card->dev, "can't parse dai %d\n", ret); + return ret; + } + *dai_of_node = args.np; + + return snd_soc_get_dai_name(&args, dai_name); +} +EXPORT_SYMBOL_GPL(meson_card_parse_dai); + +static int meson_card_set_link_name(struct snd_soc_card *card, + struct snd_soc_dai_link *link, + struct device_node *node, + const char *prefix) +{ + char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s", + prefix, node->full_name); + if (!name) + return -ENOMEM; + + link->name = name; + link->stream_name = name; + + return 0; +} + +unsigned int meson_card_parse_daifmt(struct device_node *node, + struct device_node *cpu_node) +{ + struct device_node *bitclkmaster = NULL; + struct device_node *framemaster = NULL; + unsigned int daifmt; + + daifmt = snd_soc_of_parse_daifmt(node, DT_PREFIX, + &bitclkmaster, &framemaster); + daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; + + /* If no master is provided, default to cpu master */ + if (!bitclkmaster || bitclkmaster == cpu_node) { + daifmt |= (!framemaster || framemaster == cpu_node) ? + SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM; + } else { + daifmt |= (!framemaster || framemaster == cpu_node) ? + SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM; + } + + of_node_put(bitclkmaster); + of_node_put(framemaster); + + return daifmt; +} +EXPORT_SYMBOL_GPL(meson_card_parse_daifmt); + +int meson_card_set_be_link(struct snd_soc_card *card, + struct snd_soc_dai_link *link, + struct device_node *node) +{ + struct snd_soc_dai_link_component *codec; + struct device_node *np; + int ret, num_codecs; + + link->no_pcm = 1; + link->dpcm_playback = 1; + link->dpcm_capture = 1; + + num_codecs = of_get_child_count(node); + if (!num_codecs) { + dev_err(card->dev, "be link %s has no codec\n", + node->full_name); + return -EINVAL; + } + + codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL); + if (!codec) + return -ENOMEM; + + link->codecs = codec; + link->num_codecs = num_codecs; + + for_each_child_of_node(node, np) { + ret = meson_card_parse_dai(card, np, &codec->of_node, + &codec->dai_name); + if (ret) { + of_node_put(np); + return ret; + } + + codec++; + } + + ret = meson_card_set_link_name(card, link, node, "be"); + if (ret) + dev_err(card->dev, "error setting %pOFn link name\n", np); + + return ret; +} +EXPORT_SYMBOL_GPL(meson_card_set_be_link); + +int meson_card_set_fe_link(struct snd_soc_card *card, + struct snd_soc_dai_link *link, + struct device_node *node, + bool is_playback) +{ + struct snd_soc_dai_link_component *codec; + + codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL); + if (!codec) + return -ENOMEM; + + link->codecs = codec; + link->num_codecs = 1; + + link->dynamic = 1; + link->dpcm_merged_format = 1; + link->dpcm_merged_chan = 1; + link->dpcm_merged_rate = 1; + link->codecs->dai_name = "snd-soc-dummy-dai"; + link->codecs->name = "snd-soc-dummy"; + + if (is_playback) + link->dpcm_playback = 1; + else + link->dpcm_capture = 1; + + return meson_card_set_link_name(card, link, node, "fe"); +} +EXPORT_SYMBOL_GPL(meson_card_set_fe_link); + +static int meson_card_add_links(struct snd_soc_card *card) +{ + struct meson_card *priv = snd_soc_card_get_drvdata(card); + struct device_node *node = card->dev->of_node; + struct device_node *np; + int num, i, ret; + + num = of_get_child_count(node); + if (!num) { + dev_err(card->dev, "card has no links\n"); + return -EINVAL; + } + + ret = meson_card_reallocate_links(card, num); + if (ret) + return ret; + + i = 0; + for_each_child_of_node(node, np) { + ret = priv->match_data->add_link(card, np, &i); + if (ret) { + of_node_put(np); + return ret; + } + + i++; + } + + return 0; +} + +static int meson_card_parse_of_optional(struct snd_soc_card *card, + const char *propname, + int (*func)(struct snd_soc_card *c, + const char *p)) +{ + /* If property is not provided, don't fail ... */ + if (!of_property_read_bool(card->dev->of_node, propname)) + return 0; + + /* ... but do fail if it is provided and the parsing fails */ + return func(card, propname); +} + +static int meson_card_add_aux_devices(struct snd_soc_card *card) +{ + struct device_node *node = card->dev->of_node; + struct snd_soc_aux_dev *aux; + int num, i; + + num = of_count_phandle_with_args(node, "audio-aux-devs", NULL); + if (num == -ENOENT) { + return 0; + } else if (num < 0) { + dev_err(card->dev, "error getting auxiliary devices: %d\n", + num); + return num; + } + + aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL); + if (!aux) + return -ENOMEM; + card->aux_dev = aux; + card->num_aux_devs = num; + + for_each_card_pre_auxs(card, i, aux) { + aux->dlc.of_node = + of_parse_phandle(node, "audio-aux-devs", i); + if (!aux->dlc.of_node) + return -EINVAL; + } + + return 0; +} + +static void meson_card_clean_references(struct meson_card *priv) +{ + struct snd_soc_card *card = &priv->card; + struct snd_soc_dai_link *link; + struct snd_soc_dai_link_component *codec; + struct snd_soc_aux_dev *aux; + int i, j; + + if (card->dai_link) { + for_each_card_prelinks(card, i, link) { + if (link->cpus) + of_node_put(link->cpus->of_node); + for_each_link_codecs(link, j, codec) + of_node_put(codec->of_node); + } + } + + if (card->aux_dev) { + for_each_card_pre_auxs(card, i, aux) + of_node_put(aux->dlc.of_node); + } + + kfree(card->dai_link); + kfree(priv->link_data); +} + +int meson_card_probe(struct platform_device *pdev) +{ + const struct meson_card_match_data *data; + struct device *dev = &pdev->dev; + struct meson_card *priv; + int ret; + + data = of_device_get_match_data(dev); + if (!data) { + dev_err(dev, "failed to match device\n"); + return -ENODEV; + } + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + snd_soc_card_set_drvdata(&priv->card, priv); + + priv->card.owner = THIS_MODULE; + priv->card.dev = dev; + priv->match_data = data; + + ret = snd_soc_of_parse_card_name(&priv->card, "model"); + if (ret < 0) + return ret; + + ret = meson_card_parse_of_optional(&priv->card, "audio-routing", + snd_soc_of_parse_audio_routing); + if (ret) { + dev_err(dev, "error while parsing routing\n"); + return ret; + } + + ret = meson_card_parse_of_optional(&priv->card, "audio-widgets", + snd_soc_of_parse_audio_simple_widgets); + if (ret) { + dev_err(dev, "error while parsing widgets\n"); + return ret; + } + + ret = meson_card_add_links(&priv->card); + if (ret) + goto out_err; + + ret = meson_card_add_aux_devices(&priv->card); + if (ret) + goto out_err; + + ret = devm_snd_soc_register_card(dev, &priv->card); + if (ret) + goto out_err; + + return 0; + +out_err: + meson_card_clean_references(priv); + return ret; +} +EXPORT_SYMBOL_GPL(meson_card_probe); + +int meson_card_remove(struct platform_device *pdev) +{ + struct meson_card *priv = platform_get_drvdata(pdev); + + meson_card_clean_references(priv); + + return 0; +} +EXPORT_SYMBOL_GPL(meson_card_remove); + +MODULE_DESCRIPTION("Amlogic Sound Card Utils"); +MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/meson/meson-card.h b/sound/soc/meson/meson-card.h new file mode 100644 index 000000000000..74314071c80d --- /dev/null +++ b/sound/soc/meson/meson-card.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2020 BayLibre, SAS. + * Author: Jerome Brunet <jbrunet@baylibre.com> + */ + +#ifndef _MESON_SND_CARD_H +#define _MESON_SND_CARD_H + +struct device_node; +struct platform_device; + +struct snd_soc_card; +struct snd_pcm_substream; +struct snd_pcm_hw_params; + +#define DT_PREFIX "amlogic," + +struct meson_card_match_data { + int (*add_link)(struct snd_soc_card *card, + struct device_node *node, + int *index); +}; + +struct meson_card { + const struct meson_card_match_data *match_data; + struct snd_soc_card card; + void **link_data; +}; + +unsigned int meson_card_parse_daifmt(struct device_node *node, + struct device_node *cpu_node); + +int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + unsigned int mclk_fs); + +int meson_card_reallocate_links(struct snd_soc_card *card, + unsigned int num_links); +int meson_card_parse_dai(struct snd_soc_card *card, + struct device_node *node, + struct device_node **dai_of_node, + const char **dai_name); +int meson_card_set_be_link(struct snd_soc_card *card, + struct snd_soc_dai_link *link, + struct device_node *node); +int meson_card_set_fe_link(struct snd_soc_card *card, + struct snd_soc_dai_link *link, + struct device_node *node, + bool is_playback); + +int meson_card_probe(struct platform_device *pdev); +int meson_card_remove(struct platform_device *pdev); + +#endif /* _MESON_SND_CARD_H */ |