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Diffstat (limited to 'sound/soc/codecs/ad193x.c')
-rw-r--r--sound/soc/codecs/ad193x.c547
1 files changed, 547 insertions, 0 deletions
diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c
new file mode 100644
index 000000000000..c8ca1142b2f4
--- /dev/null
+++ b/sound/soc/codecs/ad193x.c
@@ -0,0 +1,547 @@
+/*
+ * AD193X Audio Codec driver supporting AD1936/7/8/9
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/soc-dapm.h>
+#include "ad193x.h"
+
+/* codec private data */
+struct ad193x_priv {
+ struct snd_soc_codec codec;
+ u8 reg_cache[AD193X_NUM_REGS];
+};
+
+/* ad193x register cache & default register settings */
+static const u8 ad193x_reg[AD193X_NUM_REGS] = {
+ 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
+};
+
+static struct snd_soc_codec *ad193x_codec;
+struct snd_soc_codec_device soc_codec_dev_ad193x;
+
+/*
+ * AD193X volume/mute/de-emphasis etc. controls
+ */
+static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
+
+static const struct soc_enum ad193x_deemp_enum =
+ SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);
+
+static const struct snd_kcontrol_new ad193x_snd_controls[] = {
+ /* DAC volume control */
+ SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
+ AD193X_DAC_R1_VOL, 0, 0xFF, 1),
+ SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
+ AD193X_DAC_R2_VOL, 0, 0xFF, 1),
+ SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
+ AD193X_DAC_R3_VOL, 0, 0xFF, 1),
+ SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
+ AD193X_DAC_R4_VOL, 0, 0xFF, 1),
+
+ /* ADC switch control */
+ SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
+ AD193X_ADCR1_MUTE, 1, 1),
+ SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
+ AD193X_ADCR2_MUTE, 1, 1),
+
+ /* DAC switch control */
+ SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
+ AD193X_DACR1_MUTE, 1, 1),
+ SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
+ AD193X_DACR2_MUTE, 1, 1),
+ SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
+ AD193X_DACR3_MUTE, 1, 1),
+ SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
+ AD193X_DACR4_MUTE, 1, 1),
+
+ /* ADC high-pass filter */
+ SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
+ AD193X_ADC_HIGHPASS_FILTER, 1, 0),
+
+ /* DAC de-emphasis */
+ SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
+};
+
+static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
+ SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
+ SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
+ SND_SOC_DAPM_OUTPUT("DAC1OUT"),
+ SND_SOC_DAPM_OUTPUT("DAC2OUT"),
+ SND_SOC_DAPM_OUTPUT("DAC3OUT"),
+ SND_SOC_DAPM_OUTPUT("DAC4OUT"),
+ SND_SOC_DAPM_INPUT("ADC1IN"),
+ SND_SOC_DAPM_INPUT("ADC2IN"),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+ { "DAC", NULL, "PLL_PWR" },
+ { "ADC", NULL, "PLL_PWR" },
+ { "DAC", NULL, "ADC_PWR" },
+ { "ADC", NULL, "ADC_PWR" },
+ { "DAC1OUT", "DAC1 Switch", "DAC" },
+ { "DAC2OUT", "DAC2 Switch", "DAC" },
+ { "DAC3OUT", "DAC3 Switch", "DAC" },
+ { "DAC4OUT", "DAC4 Switch", "DAC" },
+ { "ADC", "ADC1 Switch", "ADC1IN" },
+ { "ADC", "ADC2 Switch", "ADC2IN" },
+};
+
+/*
+ * DAI ops entries
+ */
+
+static int ad193x_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ int reg;
+
+ reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
+ reg = (mute > 0) ? reg | AD193X_DAC_MASTER_MUTE : reg &
+ (~AD193X_DAC_MASTER_MUTE);
+ snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
+
+ return 0;
+}
+
+static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+ unsigned int rx_mask, int slots, int width)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
+ int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
+
+ dac_reg &= ~AD193X_DAC_CHAN_MASK;
+ adc_reg &= ~AD193X_ADC_CHAN_MASK;
+
+ switch (slots) {
+ case 2:
+ dac_reg |= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
+ adc_reg |= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
+ break;
+ case 4:
+ dac_reg |= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
+ adc_reg |= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
+ break;
+ case 8:
+ dac_reg |= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
+ adc_reg |= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
+ break;
+ case 16:
+ dac_reg |= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
+ adc_reg |= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
+ snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
+
+ return 0;
+}
+
+static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ int adc_reg1, adc_reg2, dac_reg;
+
+ adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1);
+ adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2);
+ dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
+
+ /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
+ * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
+ */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
+ adc_reg1 |= AD193X_ADC_SERFMT_TDM;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
+ adc_reg1 |= AD193X_ADC_SERFMT_AUX;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
+ adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
+ adc_reg2 &= ~AD193X_ADC_BCLK_INV;
+ dac_reg &= ~AD193X_DAC_LEFT_HIGH;
+ dac_reg &= ~AD193X_DAC_BCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
+ adc_reg2 |= AD193X_ADC_LEFT_HIGH;
+ adc_reg2 &= ~AD193X_ADC_BCLK_INV;
+ dac_reg |= AD193X_DAC_LEFT_HIGH;
+ dac_reg &= ~AD193X_DAC_BCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
+ adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
+ adc_reg2 |= AD193X_ADC_BCLK_INV;
+ dac_reg &= ~AD193X_DAC_LEFT_HIGH;
+ dac_reg |= AD193X_DAC_BCLK_INV;
+ break;
+
+ case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
+ adc_reg2 |= AD193X_ADC_LEFT_HIGH;
+ adc_reg2 |= AD193X_ADC_BCLK_INV;
+ dac_reg |= AD193X_DAC_LEFT_HIGH;
+ dac_reg |= AD193X_DAC_BCLK_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
+ adc_reg2 |= AD193X_ADC_LCR_MASTER;
+ adc_reg2 |= AD193X_ADC_BCLK_MASTER;
+ dac_reg |= AD193X_DAC_LCR_MASTER;
+ dac_reg |= AD193X_DAC_BCLK_MASTER;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
+ adc_reg2 |= AD193X_ADC_LCR_MASTER;
+ adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
+ dac_reg |= AD193X_DAC_LCR_MASTER;
+ dac_reg &= ~AD193X_DAC_BCLK_MASTER;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
+ adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
+ adc_reg2 |= AD193X_ADC_BCLK_MASTER;
+ dac_reg &= ~AD193X_DAC_LCR_MASTER;
+ dac_reg |= AD193X_DAC_BCLK_MASTER;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
+ adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
+ adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
+ dac_reg &= ~AD193X_DAC_LCR_MASTER;
+ dac_reg &= ~AD193X_DAC_BCLK_MASTER;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1);
+ snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2);
+ snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
+
+ return 0;
+}
+
+static int ad193x_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ int word_len = 0, reg = 0;
+
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_codec *codec = socdev->card->codec;
+
+ /* bit size */
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ word_len = 3;
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ word_len = 1;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ case SNDRV_PCM_FORMAT_S32_LE:
+ word_len = 0;
+ break;
+ }
+
+ reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
+ reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len;
+ snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
+
+ reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
+ reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) | word_len;
+ snd_soc_write(codec, AD193X_ADC_CTRL1, reg);
+
+ return 0;
+}
+
+static int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type)
+{
+ struct snd_soc_codec *codec;
+ struct ad193x_priv *ad193x;
+ int ret;
+
+ if (ad193x_codec) {
+ dev_err(dev, "Another ad193x is registered\n");
+ return -EINVAL;
+ }
+
+ ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
+ if (ad193x == NULL)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, ad193x);
+
+ codec = &ad193x->codec;
+ mutex_init(&codec->mutex);
+ codec->control_data = ctrl_data;
+ codec->dev = dev;
+ snd_soc_codec_set_drvdata(codec, ad193x);
+ codec->reg_cache = ad193x->reg_cache;
+ codec->reg_cache_size = AD193X_NUM_REGS;
+ codec->name = "AD193X";
+ codec->owner = THIS_MODULE;
+ codec->dai = &ad193x_dai;
+ codec->num_dai = 1;
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ ad193x_dai.dev = codec->dev;
+ ad193x_codec = codec;
+
+ memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);
+
+ if (bus_type == SND_SOC_I2C)
+ ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type);
+ else
+ ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type);
+ if (ret < 0) {
+ dev_err(codec->dev, "failed to set cache I/O: %d\n",
+ ret);
+ kfree(ad193x);
+ return ret;
+ }
+
+ /* default setting for ad193x */
+
+ /* unmute dac channels */
+ snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
+ /* de-emphasis: 48kHz, powedown dac */
+ snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
+ /* powerdown dac, dac in tdm mode */
+ snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
+ /* high-pass filter enable */
+ snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
+ /* sata delay=1, adc aux mode */
+ snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
+ /* pll input: mclki/xi */
+ snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
+ snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);
+
+ ret = snd_soc_register_codec(codec);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register codec: %d\n", ret);
+ kfree(ad193x);
+ return ret;
+ }
+
+ ret = snd_soc_register_dai(&ad193x_dai);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
+ snd_soc_unregister_codec(codec);
+ kfree(ad193x);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ad193x_bus_remove(struct device *dev)
+{
+ struct ad193x_priv *ad193x = dev_get_drvdata(dev);
+
+ snd_soc_unregister_dai(&ad193x_dai);
+ snd_soc_unregister_codec(&ad193x->codec);
+ kfree(ad193x);
+ ad193x_codec = NULL;
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops ad193x_dai_ops = {
+ .hw_params = ad193x_hw_params,
+ .digital_mute = ad193x_mute,
+ .set_tdm_slot = ad193x_set_tdm_slot,
+ .set_fmt = ad193x_set_dai_fmt,
+};
+
+/* codec DAI instance */
+struct snd_soc_dai ad193x_dai = {
+ .name = "AD193X",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 4,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
+ },
+ .ops = &ad193x_dai_ops,
+};
+EXPORT_SYMBOL_GPL(ad193x_dai);
+
+static int ad193x_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret = 0;
+
+ if (ad193x_codec == NULL) {
+ dev_err(&pdev->dev, "Codec device not registered\n");
+ return -ENODEV;
+ }
+
+ socdev->card->codec = ad193x_codec;
+ codec = ad193x_codec;
+
+ /* register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ dev_err(codec->dev, "failed to create pcms: %d\n", ret);
+ goto pcm_err;
+ }
+
+ snd_soc_add_controls(codec, ad193x_snd_controls,
+ ARRAY_SIZE(ad193x_snd_controls));
+ snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets,
+ ARRAY_SIZE(ad193x_dapm_widgets));
+ snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
+
+pcm_err:
+ return ret;
+}
+
+/* power down chip */
+static int ad193x_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_ad193x = {
+ .probe = ad193x_probe,
+ .remove = ad193x_remove,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);
+
+#if defined(CONFIG_SPI_MASTER)
+static int __devinit ad193x_spi_probe(struct spi_device *spi)
+{
+ return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
+}
+
+static int __devexit ad193x_spi_remove(struct spi_device *spi)
+{
+ return ad193x_bus_remove(&spi->dev);
+}
+
+static struct spi_driver ad193x_spi_driver = {
+ .driver = {
+ .name = "ad193x",
+ .owner = THIS_MODULE,
+ },
+ .probe = ad193x_spi_probe,
+ .remove = __devexit_p(ad193x_spi_remove),
+};
+#endif
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+static const struct i2c_device_id ad193x_id[] = {
+ { "ad1936", 0 },
+ { "ad1937", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ad193x_id);
+
+static int __devinit ad193x_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
+}
+
+static int __devexit ad193x_i2c_remove(struct i2c_client *client)
+{
+ return ad193x_bus_remove(&client->dev);
+}
+
+static struct i2c_driver ad193x_i2c_driver = {
+ .driver = {
+ .name = "ad193x",
+ },
+ .probe = ad193x_i2c_probe,
+ .remove = __devexit_p(ad193x_i2c_remove),
+ .id_table = ad193x_id,
+};
+#endif
+
+static int __init ad193x_modinit(void)
+{
+ int ret;
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ ret = i2c_add_driver(&ad193x_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
+ ret);
+ }
+#endif
+
+#if defined(CONFIG_SPI_MASTER)
+ ret = spi_register_driver(&ad193x_spi_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
+ ret);
+ }
+#endif
+ return ret;
+}
+module_init(ad193x_modinit);
+
+static void __exit ad193x_modexit(void)
+{
+#if defined(CONFIG_SPI_MASTER)
+ spi_unregister_driver(&ad193x_spi_driver);
+#endif
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ i2c_del_driver(&ad193x_i2c_driver);
+#endif
+}
+module_exit(ad193x_modexit);
+
+MODULE_DESCRIPTION("ASoC ad193x driver");
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_LICENSE("GPL");