forked from Minki/linux
ASoC: meson: add axg sound card support
Add the axg sound card to handle the specifities of the axg audio sub system. This card is required to: * setup the dpcm links specific to the AXG (with a cpu sound dai) * handle the 4 lanes masks of the tdm interfaces * add the loopback link when a tdm pad interface has a playback stream * handle multi-codec links Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet
Mark Brown
parent
2a05c71ea1
commit
7864a79f37
@ -43,6 +43,17 @@ config SND_MESON_AXG_TDMOUT
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Select Y or M to add support for TDM output formatter embedded
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in the Amlogic AXG SoC family
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config SND_MESON_AXG_SOUND_CARD
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tristate "Amlogic AXG Sound Card Support"
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select SND_MESON_AXG_TDM_INTERFACE
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imply SND_MESON_AXG_FRDDR
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imply SND_MESON_AXG_TODDR
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imply SND_MESON_AXG_TDMIN
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imply SND_MESON_AXG_TDMOUT
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imply SND_MESON_AXG_SPDIFOUT
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help
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Select Y or M to add support for the AXG SoC sound card
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config SND_MESON_AXG_SPDIFOUT
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tristate "Amlogic AXG SPDIF Output Support"
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imply SND_SOC_SPDIF
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@ -7,6 +7,7 @@ snd-soc-meson-axg-tdm-formatter-objs := axg-tdm-formatter.o
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snd-soc-meson-axg-tdm-interface-objs := axg-tdm-interface.o
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snd-soc-meson-axg-tdmin-objs := axg-tdmin.o
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snd-soc-meson-axg-tdmout-objs := axg-tdmout.o
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snd-soc-meson-axg-sound-card-objs := axg-card.o
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snd-soc-meson-axg-spdifout-objs := axg-spdifout.o
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obj-$(CONFIG_SND_MESON_AXG_FIFO) += snd-soc-meson-axg-fifo.o
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@ -16,4 +17,5 @@ obj-$(CONFIG_SND_MESON_AXG_TDM_FORMATTER) += snd-soc-meson-axg-tdm-formatter.o
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obj-$(CONFIG_SND_MESON_AXG_TDM_INTERFACE) += snd-soc-meson-axg-tdm-interface.o
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obj-$(CONFIG_SND_MESON_AXG_TDMIN) += snd-soc-meson-axg-tdmin.o
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obj-$(CONFIG_SND_MESON_AXG_TDMOUT) += snd-soc-meson-axg-tdmout.o
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obj-$(CONFIG_SND_MESON_AXG_SOUND_CARD) += snd-soc-meson-axg-sound-card.o
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obj-$(CONFIG_SND_MESON_AXG_SPDIFOUT) += snd-soc-meson-axg-spdifout.o
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671
sound/soc/meson/axg-card.c
Normal file
671
sound/soc/meson/axg-card.c
Normal file
@ -0,0 +1,671 @@
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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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//
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// Copyright (c) 2018 BayLibre, SAS.
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// Author: Jerome Brunet <jbrunet@baylibre.com>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <sound/soc.h>
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#include <sound/soc-dai.h>
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#include "axg-tdm.h"
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struct axg_card {
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struct snd_soc_card card;
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void **link_data;
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};
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struct axg_dai_link_tdm_mask {
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u32 tx;
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u32 rx;
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};
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struct axg_dai_link_tdm_data {
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unsigned int mclk_fs;
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unsigned int slots;
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unsigned int slot_width;
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u32 *tx_mask;
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u32 *rx_mask;
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struct axg_dai_link_tdm_mask *codec_masks;
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};
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#define PREFIX "amlogic,"
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static int axg_card_reallocate_links(struct axg_card *priv,
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unsigned int num_links)
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{
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struct snd_soc_dai_link *links;
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void **ldata;
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links = krealloc(priv->card.dai_link,
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num_links * sizeof(*priv->card.dai_link),
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GFP_KERNEL | __GFP_ZERO);
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ldata = krealloc(priv->link_data,
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num_links * sizeof(*priv->link_data),
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GFP_KERNEL | __GFP_ZERO);
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if (!links || !ldata) {
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dev_err(priv->card.dev, "failed to allocate links\n");
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return -ENOMEM;
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}
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priv->card.dai_link = links;
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priv->link_data = ldata;
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priv->card.num_links = num_links;
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return 0;
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}
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static int axg_card_parse_dai(struct snd_soc_card *card,
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struct device_node *node,
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struct device_node **dai_of_node,
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const char **dai_name)
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{
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struct of_phandle_args args;
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int ret;
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if (!dai_name || !dai_of_node || !node)
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return -EINVAL;
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ret = of_parse_phandle_with_args(node, "sound-dai",
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"#sound-dai-cells", 0, &args);
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if (ret) {
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if (ret != -EPROBE_DEFER)
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dev_err(card->dev, "can't parse dai %d\n", ret);
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return ret;
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}
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*dai_of_node = args.np;
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return snd_soc_get_dai_name(&args, dai_name);
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}
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static int axg_card_set_link_name(struct snd_soc_card *card,
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struct snd_soc_dai_link *link,
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const char *prefix)
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{
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char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s",
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prefix, link->cpu_of_node->full_name);
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if (!name)
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return -ENOMEM;
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link->name = name;
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link->stream_name = name;
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return 0;
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}
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static void axg_card_clean_references(struct axg_card *priv)
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{
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struct snd_soc_card *card = &priv->card;
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struct snd_soc_dai_link *link;
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int i, j;
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if (card->dai_link) {
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for (i = 0; i < card->num_links; i++) {
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link = &card->dai_link[i];
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of_node_put(link->cpu_of_node);
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for (j = 0; j < link->num_codecs; j++)
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of_node_put(link->codecs[j].of_node);
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}
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}
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if (card->aux_dev) {
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for (i = 0; i < card->num_aux_devs; i++)
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of_node_put(card->aux_dev[i].codec_of_node);
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}
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kfree(card->dai_link);
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kfree(priv->link_data);
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}
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static int axg_card_add_aux_devices(struct snd_soc_card *card)
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{
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struct device_node *node = card->dev->of_node;
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struct snd_soc_aux_dev *aux;
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int num, i;
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num = of_count_phandle_with_args(node, PREFIX "aux-devs", NULL);
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if (num == -ENOENT) {
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/*
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* It is ok to have no auxiliary devices but for this card it
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* is a strange situtation. Let's warn the about it.
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*/
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dev_warn(card->dev, "card has no auxiliary devices\n");
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return 0;
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} else if (num < 0) {
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dev_err(card->dev, "error getting auxiliary devices: %d\n",
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num);
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return num;
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}
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aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL);
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if (!aux)
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return -ENOMEM;
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card->aux_dev = aux;
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card->num_aux_devs = num;
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for (i = 0; i < card->num_aux_devs; i++, aux++) {
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aux->codec_of_node = of_parse_phandle(node,
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PREFIX "aux-devs", i);
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if (!aux->codec_of_node)
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return -EINVAL;
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}
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return 0;
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}
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static int axg_card_tdm_be_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct axg_card *priv = snd_soc_card_get_drvdata(rtd->card);
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struct axg_dai_link_tdm_data *be =
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(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
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struct snd_soc_dai *codec_dai;
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unsigned int mclk;
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int ret, i;
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if (be->mclk_fs) {
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mclk = params_rate(params) * be->mclk_fs;
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for (i = 0; i < rtd->num_codecs; i++) {
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codec_dai = rtd->codec_dais[i];
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
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SND_SOC_CLOCK_IN);
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if (ret && ret != -ENOTSUPP)
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, 0, mclk,
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SND_SOC_CLOCK_OUT);
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if (ret && ret != -ENOTSUPP)
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return ret;
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}
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return 0;
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}
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static const struct snd_soc_ops axg_card_tdm_be_ops = {
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.hw_params = axg_card_tdm_be_hw_params,
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};
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static int axg_card_tdm_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct axg_card *priv = snd_soc_card_get_drvdata(rtd->card);
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struct axg_dai_link_tdm_data *be =
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(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
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struct snd_soc_dai *codec_dai;
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int ret, i;
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for (i = 0; i < rtd->num_codecs; i++) {
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codec_dai = rtd->codec_dais[i];
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ret = snd_soc_dai_set_tdm_slot(codec_dai,
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be->codec_masks[i].tx,
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be->codec_masks[i].rx,
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be->slots, be->slot_width);
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if (ret && ret != -ENOTSUPP) {
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dev_err(codec_dai->dev,
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"setting tdm link slots failed\n");
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return ret;
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}
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}
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ret = axg_tdm_set_tdm_slots(rtd->cpu_dai, be->tx_mask, be->rx_mask,
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be->slots, be->slot_width);
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if (ret) {
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dev_err(rtd->cpu_dai->dev, "setting tdm link slots failed\n");
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return ret;
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}
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return 0;
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}
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static int axg_card_tdm_dai_lb_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct axg_card *priv = snd_soc_card_get_drvdata(rtd->card);
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struct axg_dai_link_tdm_data *be =
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(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
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int ret;
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/* The loopback rx_mask is the pad tx_mask */
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ret = axg_tdm_set_tdm_slots(rtd->cpu_dai, NULL, be->tx_mask,
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be->slots, be->slot_width);
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if (ret) {
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dev_err(rtd->cpu_dai->dev, "setting tdm link slots failed\n");
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return ret;
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}
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return 0;
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}
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static int axg_card_add_tdm_loopback(struct snd_soc_card *card,
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int *index)
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{
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struct axg_card *priv = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai_link *pad = &card->dai_link[*index];
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struct snd_soc_dai_link *lb;
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int ret;
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/* extend links */
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ret = axg_card_reallocate_links(priv, card->num_links + 1);
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if (ret)
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return ret;
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lb = &card->dai_link[*index + 1];
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lb->name = kasprintf(GFP_KERNEL, "%s-lb", pad->name);
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if (!lb->name)
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return -ENOMEM;
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lb->stream_name = lb->name;
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lb->cpu_of_node = pad->cpu_of_node;
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lb->cpu_dai_name = "TDM Loopback";
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lb->codec_name = "snd-soc-dummy";
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lb->codec_dai_name = "snd-soc-dummy-dai";
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lb->dpcm_capture = 1;
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lb->no_pcm = 1;
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lb->ops = &axg_card_tdm_be_ops;
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lb->init = axg_card_tdm_dai_lb_init;
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/* Provide the same link data to the loopback */
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priv->link_data[*index + 1] = priv->link_data[*index];
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/*
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* axg_card_clean_references() will iterate over this link,
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* make sure the node count is balanced
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*/
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of_node_get(lb->cpu_of_node);
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/* Let add_links continue where it should */
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*index += 1;
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return 0;
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}
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static unsigned int axg_card_parse_daifmt(struct device_node *node,
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struct device_node *cpu_node)
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{
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struct device_node *bitclkmaster = NULL;
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struct device_node *framemaster = NULL;
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unsigned int daifmt;
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daifmt = snd_soc_of_parse_daifmt(node, PREFIX,
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&bitclkmaster, &framemaster);
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daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
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/* If no master is provided, default to cpu master */
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if (!bitclkmaster || bitclkmaster == cpu_node) {
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daifmt |= (!framemaster || framemaster == cpu_node) ?
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SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM;
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} else {
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daifmt |= (!framemaster || framemaster == cpu_node) ?
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SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM;
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}
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of_node_put(bitclkmaster);
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of_node_put(framemaster);
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return daifmt;
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}
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static int axg_card_parse_cpu_tdm_slots(struct snd_soc_card *card,
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struct snd_soc_dai_link *link,
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struct device_node *node,
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struct axg_dai_link_tdm_data *be)
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{
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char propname[32];
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u32 tx, rx;
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int i;
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be->tx_mask = devm_kcalloc(card->dev, AXG_TDM_NUM_LANES,
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sizeof(*be->tx_mask), GFP_KERNEL);
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be->rx_mask = devm_kcalloc(card->dev, AXG_TDM_NUM_LANES,
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sizeof(*be->rx_mask), GFP_KERNEL);
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if (!be->tx_mask || !be->rx_mask)
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return -ENOMEM;
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for (i = 0, tx = 0; i < AXG_TDM_NUM_LANES; i++) {
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snprintf(propname, 32, "dai-tdm-slot-tx-mask-%d", i);
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snd_soc_of_get_slot_mask(node, propname, &be->tx_mask[i]);
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tx = max(tx, be->tx_mask[i]);
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}
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/* Disable playback is the interface has no tx slots */
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if (!tx)
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link->dpcm_playback = 0;
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for (i = 0, rx = 0; i < AXG_TDM_NUM_LANES; i++) {
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snprintf(propname, 32, "dai-tdm-slot-rx-mask-%d", i);
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snd_soc_of_get_slot_mask(node, propname, &be->rx_mask[i]);
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rx = max(rx, be->rx_mask[i]);
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}
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/* Disable capture is the interface has no rx slots */
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if (!rx)
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link->dpcm_capture = 0;
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/* ... but the interface should at least have one of them */
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if (!tx && !rx) {
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dev_err(card->dev, "tdm link has no cpu slots\n");
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return -EINVAL;
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}
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of_property_read_u32(node, "dai-tdm-slot-num", &be->slots);
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if (!be->slots) {
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/*
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* If the slot number is not provided, set it such as it
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* accommodates the largest mask
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*/
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be->slots = fls(max(tx, rx));
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} else if (be->slots < fls(max(tx, rx)) || be->slots > 32) {
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/*
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* Error if the slots can't accommodate the largest mask or
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* if it is just too big
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*/
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dev_err(card->dev, "bad slot number\n");
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return -EINVAL;
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}
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of_property_read_u32(node, "dai-tdm-slot-width", &be->slot_width);
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return 0;
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}
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static int axg_card_parse_codecs_masks(struct snd_soc_card *card,
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struct snd_soc_dai_link *link,
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struct device_node *node,
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struct axg_dai_link_tdm_data *be)
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{
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struct axg_dai_link_tdm_mask *codec_mask;
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struct device_node *np;
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codec_mask = devm_kcalloc(card->dev, link->num_codecs,
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sizeof(*codec_mask), GFP_KERNEL);
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if (!codec_mask)
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return -ENOMEM;
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be->codec_masks = codec_mask;
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for_each_child_of_node(node, np) {
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snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask",
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&codec_mask->rx);
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snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask",
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&codec_mask->tx);
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codec_mask++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
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 snd_soc_dai_link *link = &card->dai_link[*index];
|
||||
struct axg_dai_link_tdm_data *be;
|
||||
int ret;
|
||||
|
||||
/* Allocate tdm link parameters */
|
||||
be = devm_kzalloc(card->dev, sizeof(*be), GFP_KERNEL);
|
||||
if (!be)
|
||||
return -ENOMEM;
|
||||
priv->link_data[*index] = be;
|
||||
|
||||
/* 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->cpu_of_node);
|
||||
|
||||
of_property_read_u32(node, "mclk-fs", &be->mclk_fs);
|
||||
|
||||
ret = axg_card_parse_cpu_tdm_slots(card, link, node, be);
|
||||
if (ret) {
|
||||
dev_err(card->dev, "error parsing tdm link slots\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = axg_card_parse_codecs_masks(card, link, node, be);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Add loopback if the pad dai has playback */
|
||||
if (link->dpcm_playback) {
|
||||
ret = axg_card_add_tdm_loopback(card, index);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
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, "be");
|
||||
if (ret)
|
||||
dev_err(card->dev, "error setting %s link name\n", np->name);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int axg_card_set_fe_link(struct snd_soc_card *card,
|
||||
struct snd_soc_dai_link *link,
|
||||
bool is_playback)
|
||||
{
|
||||
link->dynamic = 1;
|
||||
link->dpcm_merged_format = 1;
|
||||
link->dpcm_merged_chan = 1;
|
||||
link->dpcm_merged_rate = 1;
|
||||
link->codec_dai_name = "snd-soc-dummy-dai";
|
||||
link->codec_name = "snd-soc-dummy";
|
||||
|
||||
if (is_playback)
|
||||
link->dpcm_playback = 1;
|
||||
else
|
||||
link->dpcm_capture = 1;
|
||||
|
||||
return axg_card_set_link_name(card, link, "fe");
|
||||
}
|
||||
|
||||
static int axg_card_cpu_is_capture_fe(struct device_node *np)
|
||||
{
|
||||
return of_device_is_compatible(np, PREFIX "axg-toddr");
|
||||
}
|
||||
|
||||
static int axg_card_cpu_is_playback_fe(struct device_node *np)
|
||||
{
|
||||
return of_device_is_compatible(np, 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");
|
||||
}
|
||||
|
||||
static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np,
|
||||
int *index)
|
||||
{
|
||||
struct snd_soc_dai_link *dai_link = &card->dai_link[*index];
|
||||
int ret;
|
||||
|
||||
ret = axg_card_parse_dai(card, np, &dai_link->cpu_of_node,
|
||||
&dai_link->cpu_dai_name);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (axg_card_cpu_is_playback_fe(dai_link->cpu_of_node))
|
||||
ret = axg_card_set_fe_link(card, dai_link, true);
|
||||
else if (axg_card_cpu_is_capture_fe(dai_link->cpu_of_node))
|
||||
ret = axg_card_set_fe_link(card, dai_link, false);
|
||||
else
|
||||
ret = axg_card_set_be_link(card, dai_link, np);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (axg_card_cpu_is_tdm_iface(dai_link->cpu_of_node))
|
||||
ret = axg_card_parse_tdm(card, np, index);
|
||||
|
||||
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 of_device_id axg_card_of_match[] = {
|
||||
{ .compatible = "amlogic,axg-sound-card", },
|
||||
{}
|
||||
};
|
||||
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, PREFIX "name");
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = axg_card_parse_of_optional(&priv->card, PREFIX "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, PREFIX "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,
|
||||
.driver = {
|
||||
.name = "axg-sound-card",
|
||||
.of_match_table = axg_card_of_match,
|
||||
},
|
||||
};
|
||||
module_platform_driver(axg_card_pdrv);
|
||||
|
||||
MODULE_DESCRIPTION("Amlogic AXG ALSA machine driver");
|
||||
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue
Block a user