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Diffstat (limited to 'sound/soc/amd/acp3x-rt5682-max9836.c')
-rw-r--r--sound/soc/amd/acp3x-rt5682-max9836.c558
1 files changed, 558 insertions, 0 deletions
diff --git a/sound/soc/amd/acp3x-rt5682-max9836.c b/sound/soc/amd/acp3x-rt5682-max9836.c
new file mode 100644
index 0000000000..28ad5f5b9a
--- /dev/null
+++ b/sound/soc/amd/acp3x-rt5682-max9836.c
@@ -0,0 +1,558 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Machine driver for AMD ACP Audio engine using DA7219 & MAX98357 codec.
+//
+//Copyright 2016 Advanced Micro Devices, Inc.
+
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/io.h>
+#include <linux/acpi.h>
+
+#include "raven/acp3x.h"
+#include "../codecs/rt5682.h"
+#include "../codecs/rt1015.h"
+
+#define PCO_PLAT_CLK 48000000
+#define RT5682_PLL_FREQ (48000 * 512)
+#define DUAL_CHANNEL 2
+
+static struct snd_soc_jack pco_jack;
+static struct snd_soc_jack_pin pco_jack_pins[] = {
+ {
+ .pin = "Headphone Jack",
+ .mask = SND_JACK_HEADPHONE,
+ },
+ {
+ .pin = "Headset Mic",
+ .mask = SND_JACK_MICROPHONE,
+ },
+};
+
+static struct clk *rt5682_dai_wclk;
+static struct clk *rt5682_dai_bclk;
+static struct gpio_desc *dmic_sel;
+void *soc_is_rltk_max(struct device *dev);
+
+enum {
+ RT5682 = 0,
+ MAX,
+ EC,
+};
+
+static int acp3x_5682_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int ret;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+ struct snd_soc_component *component = codec_dai->component;
+
+ dev_info(rtd->dev, "codec dai name = %s\n", codec_dai->name);
+
+ /* set rt5682 dai fmt */
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBP_CFP);
+ if (ret < 0) {
+ dev_err(rtd->card->dev,
+ "Failed to set rt5682 dai fmt: %d\n", ret);
+ return ret;
+ }
+
+ /* set codec PLL */
+ ret = snd_soc_dai_set_pll(codec_dai, RT5682_PLL2, RT5682_PLL2_S_MCLK,
+ PCO_PLAT_CLK, RT5682_PLL_FREQ);
+ if (ret < 0) {
+ dev_err(rtd->dev, "can't set rt5682 PLL: %d\n", ret);
+ return ret;
+ }
+
+ /* Set codec sysclk */
+ ret = snd_soc_dai_set_sysclk(codec_dai, RT5682_SCLK_S_PLL2,
+ RT5682_PLL_FREQ, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(rtd->dev,
+ "Failed to set rt5682 SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ /* Set tdm/i2s1 master bclk ratio */
+ ret = snd_soc_dai_set_bclk_ratio(codec_dai, 64);
+ if (ret < 0) {
+ dev_err(rtd->dev,
+ "Failed to set rt5682 tdm bclk ratio: %d\n", ret);
+ return ret;
+ }
+
+ rt5682_dai_wclk = clk_get(component->dev, "rt5682-dai-wclk");
+ rt5682_dai_bclk = clk_get(component->dev, "rt5682-dai-bclk");
+
+ ret = snd_soc_card_jack_new_pins(card, "Headset Jack",
+ SND_JACK_HEADSET |
+ SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+ SND_JACK_BTN_2 | SND_JACK_BTN_3,
+ &pco_jack,
+ pco_jack_pins,
+ ARRAY_SIZE(pco_jack_pins));
+ if (ret) {
+ dev_err(card->dev, "HP jack creation failed %d\n", ret);
+ return ret;
+ }
+
+ snd_jack_set_key(pco_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
+ snd_jack_set_key(pco_jack.jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+ snd_jack_set_key(pco_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+ snd_jack_set_key(pco_jack.jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
+
+ ret = snd_soc_component_set_jack(component, &pco_jack, NULL);
+ if (ret) {
+ dev_err(rtd->dev, "Headset Jack call-back failed: %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int rt5682_clk_enable(struct snd_pcm_substream *substream)
+{
+ int ret = 0;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ /* RT5682 will support only 48K output with 48M mclk */
+ clk_set_rate(rt5682_dai_wclk, 48000);
+ clk_set_rate(rt5682_dai_bclk, 48000 * 64);
+ ret = clk_prepare_enable(rt5682_dai_wclk);
+ if (ret < 0) {
+ dev_err(rtd->dev, "can't enable wclk %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int acp3x_1015_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_dai *codec_dai;
+ int srate, i, ret;
+
+ ret = 0;
+ srate = params_rate(params);
+
+ for_each_rtd_codec_dais(rtd, i, codec_dai) {
+ if (strcmp(codec_dai->name, "rt1015-aif"))
+ continue;
+
+ ret = snd_soc_dai_set_pll(codec_dai, 0, RT1015_PLL_S_BCLK,
+ 64 * srate, 256 * srate);
+ if (ret < 0)
+ return ret;
+ ret = snd_soc_dai_set_sysclk(codec_dai, RT1015_SCLK_S_PLL,
+ 256 * srate, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+ }
+ return ret;
+}
+
+static void rt5682_clk_disable(void)
+{
+ clk_disable_unprepare(rt5682_dai_wclk);
+}
+
+static const unsigned int channels[] = {
+ DUAL_CHANNEL,
+};
+
+static const unsigned int rates[] = {
+ 48000,
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_channels = {
+ .count = ARRAY_SIZE(channels),
+ .list = channels,
+ .mask = 0,
+};
+
+static int acp3x_5682_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_card *card = rtd->card;
+ struct acp3x_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+ machine->play_i2s_instance = I2S_SP_INSTANCE;
+ machine->cap_i2s_instance = I2S_SP_INSTANCE;
+
+ runtime->hw.channels_max = DUAL_CHANNEL;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_channels);
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+ return rt5682_clk_enable(substream);
+}
+
+static int acp3x_max_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_card *card = rtd->card;
+ struct acp3x_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+ machine->play_i2s_instance = I2S_BT_INSTANCE;
+
+ runtime->hw.channels_max = DUAL_CHANNEL;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_channels);
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+ return rt5682_clk_enable(substream);
+}
+
+static int acp3x_ec_dmic0_startup(struct snd_pcm_substream *substream)
+{
+ 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);
+ struct acp3x_platform_info *machine = snd_soc_card_get_drvdata(card);
+
+ machine->cap_i2s_instance = I2S_BT_INSTANCE;
+ snd_soc_dai_set_bclk_ratio(codec_dai, 64);
+
+ return rt5682_clk_enable(substream);
+}
+
+static int dmic_switch;
+
+static int dmic_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = dmic_switch;
+ return 0;
+}
+
+static int dmic_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ if (dmic_sel) {
+ dmic_switch = ucontrol->value.integer.value[0];
+ gpiod_set_value(dmic_sel, dmic_switch);
+ }
+ return 0;
+}
+
+static void rt5682_shutdown(struct snd_pcm_substream *substream)
+{
+ rt5682_clk_disable();
+}
+
+static const struct snd_soc_ops acp3x_5682_ops = {
+ .startup = acp3x_5682_startup,
+ .shutdown = rt5682_shutdown,
+};
+
+static const struct snd_soc_ops acp3x_max_play_ops = {
+ .startup = acp3x_max_startup,
+ .shutdown = rt5682_shutdown,
+ .hw_params = acp3x_1015_hw_params,
+};
+
+static const struct snd_soc_ops acp3x_ec_cap0_ops = {
+ .startup = acp3x_ec_dmic0_startup,
+ .shutdown = rt5682_shutdown,
+};
+
+SND_SOC_DAILINK_DEF(acp3x_i2s,
+ DAILINK_COMP_ARRAY(COMP_CPU("acp3x_i2s_playcap.0")));
+SND_SOC_DAILINK_DEF(acp3x_bt,
+ DAILINK_COMP_ARRAY(COMP_CPU("acp3x_i2s_playcap.2")));
+
+SND_SOC_DAILINK_DEF(rt5682,
+ DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5682:00", "rt5682-aif1")));
+SND_SOC_DAILINK_DEF(max,
+ DAILINK_COMP_ARRAY(COMP_CODEC("MX98357A:00", "HiFi")));
+SND_SOC_DAILINK_DEF(rt1015p,
+ DAILINK_COMP_ARRAY(COMP_CODEC("RTL1015:00", "HiFi")));
+SND_SOC_DAILINK_DEF(rt1015,
+ DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC1015:00", "rt1015-aif"),
+ COMP_CODEC("i2c-10EC1015:01", "rt1015-aif")));
+SND_SOC_DAILINK_DEF(cros_ec,
+ DAILINK_COMP_ARRAY(COMP_CODEC("GOOG0013:00", "EC Codec I2S RX")));
+
+SND_SOC_DAILINK_DEF(platform,
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("acp3x_rv_i2s_dma.0")));
+
+static struct snd_soc_codec_conf rt1015_conf[] = {
+ {
+ .dlc = COMP_CODEC_CONF("i2c-10EC1015:00"),
+ .name_prefix = "Left",
+ },
+ {
+ .dlc = COMP_CODEC_CONF("i2c-10EC1015:01"),
+ .name_prefix = "Right",
+ },
+};
+
+static struct snd_soc_dai_link acp3x_dai[] = {
+ [RT5682] = {
+ .name = "acp3x-5682-play",
+ .stream_name = "Playback",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBP_CFP,
+ .init = acp3x_5682_init,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ .ops = &acp3x_5682_ops,
+ SND_SOC_DAILINK_REG(acp3x_i2s, rt5682, platform),
+ },
+ [MAX] = {
+ .name = "acp3x-max98357-play",
+ .stream_name = "HiFi Playback",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBC_CFC,
+ .dpcm_playback = 1,
+ .ops = &acp3x_max_play_ops,
+ .cpus = acp3x_bt,
+ .num_cpus = ARRAY_SIZE(acp3x_bt),
+ .platforms = platform,
+ .num_platforms = ARRAY_SIZE(platform),
+ },
+ [EC] = {
+ .name = "acp3x-ec-dmic0-capture",
+ .stream_name = "Capture DMIC0",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBC_CFC,
+ .dpcm_capture = 1,
+ .ops = &acp3x_ec_cap0_ops,
+ SND_SOC_DAILINK_REG(acp3x_bt, cros_ec, platform),
+ },
+};
+
+static const char * const dmic_mux_text[] = {
+ "Front Mic",
+ "Rear Mic",
+};
+
+static SOC_ENUM_SINGLE_DECL(
+ acp3x_dmic_enum, SND_SOC_NOPM, 0, dmic_mux_text);
+
+static const struct snd_kcontrol_new acp3x_dmic_mux_control =
+ SOC_DAPM_ENUM_EXT("DMIC Select Mux", acp3x_dmic_enum,
+ dmic_get, dmic_set);
+
+static const struct snd_soc_dapm_widget acp3x_5682_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_SPK("Spk", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+ SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0,
+ &acp3x_dmic_mux_control),
+};
+
+static const struct snd_soc_dapm_route acp3x_5682_audio_route[] = {
+ {"Headphone Jack", NULL, "HPOL"},
+ {"Headphone Jack", NULL, "HPOR"},
+ {"IN1P", NULL, "Headset Mic"},
+ {"Spk", NULL, "Speaker"},
+ {"Dmic Mux", "Front Mic", "DMIC"},
+ {"Dmic Mux", "Rear Mic", "DMIC"},
+};
+
+static const struct snd_kcontrol_new acp3x_5682_mc_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+ SOC_DAPM_PIN_SWITCH("Spk"),
+ SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static struct snd_soc_card acp3x_5682 = {
+ .name = "acp3xalc5682m98357",
+ .owner = THIS_MODULE,
+ .dai_link = acp3x_dai,
+ .num_links = ARRAY_SIZE(acp3x_dai),
+ .dapm_widgets = acp3x_5682_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(acp3x_5682_widgets),
+ .dapm_routes = acp3x_5682_audio_route,
+ .num_dapm_routes = ARRAY_SIZE(acp3x_5682_audio_route),
+ .controls = acp3x_5682_mc_controls,
+ .num_controls = ARRAY_SIZE(acp3x_5682_mc_controls),
+};
+
+static const struct snd_soc_dapm_widget acp3x_1015_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+ SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0,
+ &acp3x_dmic_mux_control),
+ SND_SOC_DAPM_SPK("Left Spk", NULL),
+ SND_SOC_DAPM_SPK("Right Spk", NULL),
+};
+
+static const struct snd_soc_dapm_route acp3x_1015_route[] = {
+ {"Headphone Jack", NULL, "HPOL"},
+ {"Headphone Jack", NULL, "HPOR"},
+ {"IN1P", NULL, "Headset Mic"},
+ {"Dmic Mux", "Front Mic", "DMIC"},
+ {"Dmic Mux", "Rear Mic", "DMIC"},
+ {"Left Spk", NULL, "Left SPO"},
+ {"Right Spk", NULL, "Right SPO"},
+};
+
+static const struct snd_kcontrol_new acp3x_mc_1015_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+ SOC_DAPM_PIN_SWITCH("Headset Mic"),
+ SOC_DAPM_PIN_SWITCH("Left Spk"),
+ SOC_DAPM_PIN_SWITCH("Right Spk"),
+};
+
+static struct snd_soc_card acp3x_1015 = {
+ .name = "acp3xalc56821015",
+ .owner = THIS_MODULE,
+ .dai_link = acp3x_dai,
+ .num_links = ARRAY_SIZE(acp3x_dai),
+ .dapm_widgets = acp3x_1015_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(acp3x_1015_widgets),
+ .dapm_routes = acp3x_1015_route,
+ .num_dapm_routes = ARRAY_SIZE(acp3x_1015_route),
+ .codec_conf = rt1015_conf,
+ .num_configs = ARRAY_SIZE(rt1015_conf),
+ .controls = acp3x_mc_1015_controls,
+ .num_controls = ARRAY_SIZE(acp3x_mc_1015_controls),
+};
+
+static const struct snd_soc_dapm_widget acp3x_1015p_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+ SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0,
+ &acp3x_dmic_mux_control),
+ SND_SOC_DAPM_SPK("Speakers", NULL),
+};
+
+static const struct snd_soc_dapm_route acp3x_1015p_route[] = {
+ {"Headphone Jack", NULL, "HPOL"},
+ {"Headphone Jack", NULL, "HPOR"},
+ {"IN1P", NULL, "Headset Mic"},
+ {"Dmic Mux", "Front Mic", "DMIC"},
+ {"Dmic Mux", "Rear Mic", "DMIC"},
+ /* speaker */
+ { "Speakers", NULL, "Speaker" },
+};
+
+static const struct snd_kcontrol_new acp3x_mc_1015p_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Speakers"),
+ SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+ SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static struct snd_soc_card acp3x_1015p = {
+ .name = "acp3xalc56821015p",
+ .owner = THIS_MODULE,
+ .dai_link = acp3x_dai,
+ .num_links = ARRAY_SIZE(acp3x_dai),
+ .dapm_widgets = acp3x_1015p_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(acp3x_1015p_widgets),
+ .dapm_routes = acp3x_1015p_route,
+ .num_dapm_routes = ARRAY_SIZE(acp3x_1015p_route),
+ .controls = acp3x_mc_1015p_controls,
+ .num_controls = ARRAY_SIZE(acp3x_mc_1015p_controls),
+};
+
+void *soc_is_rltk_max(struct device *dev)
+{
+ const struct acpi_device_id *match;
+
+ match = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!match)
+ return NULL;
+ return (void *)match->driver_data;
+}
+
+static void card_spk_dai_link_present(struct snd_soc_dai_link *links,
+ const char *card_name)
+{
+ if (!strcmp(card_name, "acp3xalc56821015")) {
+ links[1].codecs = rt1015;
+ links[1].num_codecs = ARRAY_SIZE(rt1015);
+ } else if (!strcmp(card_name, "acp3xalc56821015p")) {
+ links[1].codecs = rt1015p;
+ links[1].num_codecs = ARRAY_SIZE(rt1015p);
+ } else {
+ links[1].codecs = max;
+ links[1].num_codecs = ARRAY_SIZE(max);
+ }
+}
+
+static int acp3x_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct snd_soc_card *card;
+ struct acp3x_platform_info *machine;
+ struct device *dev = &pdev->dev;
+
+ card = (struct snd_soc_card *)soc_is_rltk_max(dev);
+ if (!card)
+ return -ENODEV;
+
+ machine = devm_kzalloc(&pdev->dev, sizeof(*machine), GFP_KERNEL);
+ if (!machine)
+ return -ENOMEM;
+
+ card_spk_dai_link_present(card->dai_link, card->name);
+ card->dev = &pdev->dev;
+ platform_set_drvdata(pdev, card);
+ snd_soc_card_set_drvdata(card, machine);
+
+ dmic_sel = devm_gpiod_get(&pdev->dev, "dmic", GPIOD_OUT_LOW);
+ if (IS_ERR(dmic_sel)) {
+ dev_err(&pdev->dev, "DMIC gpio failed err=%ld\n",
+ PTR_ERR(dmic_sel));
+ return PTR_ERR(dmic_sel);
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret) {
+ return dev_err_probe(&pdev->dev, ret,
+ "devm_snd_soc_register_card(%s) failed\n",
+ card->name);
+ }
+ return 0;
+}
+
+static const struct acpi_device_id acp3x_audio_acpi_match[] = {
+ { "AMDI5682", (unsigned long)&acp3x_5682},
+ { "AMDI1015", (unsigned long)&acp3x_1015},
+ { "10021015", (unsigned long)&acp3x_1015p},
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, acp3x_audio_acpi_match);
+
+static struct platform_driver acp3x_audio = {
+ .driver = {
+ .name = "acp3x-alc5682-max98357",
+ .acpi_match_table = ACPI_PTR(acp3x_audio_acpi_match),
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = acp3x_probe,
+};
+
+module_platform_driver(acp3x_audio);
+
+MODULE_AUTHOR("akshu.agrawal@amd.com");
+MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati@amd.com");
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("ALC5682 ALC1015, ALC1015P & MAX98357 audio support");
+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 11:18:04 +0000