diff options
Diffstat (limited to 'sound/soc/imx/imx-3stack-sgtl5000.c')
| -rw-r--r-- | sound/soc/imx/imx-3stack-sgtl5000.c | 706 |
1 files changed, 706 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-3stack-sgtl5000.c b/sound/soc/imx/imx-3stack-sgtl5000.c new file mode 100644 index 000000000000..cccc0bda6150 --- /dev/null +++ b/sound/soc/imx/imx-3stack-sgtl5000.c @@ -0,0 +1,706 @@ +/* + * imx-3stack-sgtl5000.c -- i.MX 3Stack Driver for Freescale SGTL5000 Codec + * + * Copyright (C) 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Revision history + * 21th Oct 2008 Initial version. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/bitops.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <linux/err.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/fsl_devices.h> +#include <linux/slab.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/initval.h> + +#include <mach/dma.h> +#include <mach/clock.h> + +#include "../codecs/sgtl5000.h" +#include "imx-ssi.h" +#include "imx-pcm.h" + +#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE) +#include <linux/mxc_asrc.h> + +static unsigned int sgtl5000_rates[] = { + 0, + 32000, + 44100, + 48000, + 96000, +}; + +struct asrc_esai { + unsigned int cpu_dai_rates; + unsigned int codec_dai_rates; + enum asrc_pair_index asrc_index; + unsigned int output_sample_rate; +}; + +static struct asrc_esai asrc_ssi_data; +#endif + +/* SSI BCLK and LRC master */ +#define SGTL5000_SSI_MASTER 1 + +struct imx_3stack_priv { + int sysclk; + int hw; + struct platform_device *pdev; +}; + +static struct imx_3stack_priv card_priv; + +static int imx_3stack_audio_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_link *machine = rtd->dai; + struct snd_soc_dai *cpu_dai = machine->cpu_dai; + struct snd_soc_dai *codec_dai = machine->codec_dai; + struct imx_3stack_priv *priv = &card_priv; + unsigned int rate = params_rate(params); + struct imx_ssi *ssi_mode = (struct imx_ssi *)cpu_dai->private_data; + int ret = 0; + + unsigned int channels = params_channels(params); + u32 dai_format; + + /* only need to do this once as capture and playback are sync */ + if (priv->hw) + return 0; + priv->hw = 1; + +#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE) + if ((asrc_ssi_data.output_sample_rate != 0) + && (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)) { + unsigned int asrc_input_rate = rate; + unsigned int channel = params_channels(params); + struct mxc_runtime_data *pcm_data = + substream->runtime->private_data; + struct asrc_config config; + struct mxc_audio_platform_data *plat; + struct imx_3stack_priv *priv = &card_priv; + int retVal = 0; + retVal = asrc_req_pair(channel, &asrc_ssi_data.asrc_index); + if (retVal < 0) { + pr_err("asrc_req_pair fail\n"); + return -1; + } + config.pair = asrc_ssi_data.asrc_index; + config.channel_num = channel; + config.input_sample_rate = asrc_input_rate; + config.output_sample_rate = asrc_ssi_data.output_sample_rate; + config.inclk = INCLK_NONE; + config.word_width = 32; + plat = priv->pdev->dev.platform_data; + if (plat->src_port == 1) + config.outclk = OUTCLK_SSI1_TX; + else + config.outclk = OUTCLK_SSI2_TX; + retVal = asrc_config_pair(&config); + if (retVal < 0) { + pr_err("Fail to config asrc\n"); + asrc_release_pair(asrc_ssi_data.asrc_index); + return retVal; + } + rate = asrc_ssi_data.output_sample_rate; + pcm_data->asrc_index = asrc_ssi_data.asrc_index; + pcm_data->asrc_enable = 1; + } +#endif + + snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, priv->sysclk, 0); + snd_soc_dai_set_sysclk(codec_dai, SGTL5000_LRCLK, rate, 0); + +#if SGTL5000_SSI_MASTER + dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM; +#else + dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS; +#endif + + ssi_mode->sync_mode = 1; + if (channels == 1) + ssi_mode->network_mode = 0; + else + ssi_mode->network_mode = 1; + + /* set codec DAI configuration */ + ret = snd_soc_dai_set_fmt(codec_dai, dai_format); + if (ret < 0) + return ret; + + /* set i.MX active slot mask */ + snd_soc_dai_set_tdm_slot(cpu_dai, + channels == 1 ? 0xfffffffe : 0xfffffffc, + channels == 1 ? 0xfffffffe : 0xfffffffc, + 2, 32); + + /* set cpu DAI configuration */ + ret = snd_soc_dai_set_fmt(cpu_dai, dai_format); + if (ret < 0) + return ret; + + /* set the SSI system clock as input (unused) */ + snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, SND_SOC_CLOCK_IN); + + return 0; +} + +static int imx_3stack_startup(struct snd_pcm_substream *substream) +{ +#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE) + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (asrc_ssi_data.output_sample_rate != 0) { + struct snd_soc_pcm_runtime *rtd = + substream->private_data; + struct snd_soc_dai_link *pcm_link = rtd->dai; + struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai; + struct snd_soc_dai *codec_dai = pcm_link->codec_dai; + asrc_ssi_data.cpu_dai_rates = cpu_dai->playback.rates; + asrc_ssi_data.codec_dai_rates = + codec_dai->playback.rates; + cpu_dai->playback.rates = + SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT; + codec_dai->playback.rates = + SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT; + } + } +#endif + return 0; +} + +static void imx_3stack_shutdown(struct snd_pcm_substream *substream) +{ + struct imx_3stack_priv *priv = &card_priv; + +#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE) + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (asrc_ssi_data.output_sample_rate != 0) { + struct snd_soc_pcm_runtime *rtd = + substream->private_data; + struct snd_soc_dai_link *pcm_link = rtd->dai; + struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai; + struct snd_soc_dai *codec_dai = pcm_link->codec_dai; + codec_dai->playback.rates = + asrc_ssi_data.codec_dai_rates; + cpu_dai->playback.rates = asrc_ssi_data.cpu_dai_rates; + asrc_release_pair(asrc_ssi_data.asrc_index); + } + } +#endif + + priv->hw = 0; +} + +/* + * imx_3stack SGTL5000 audio DAI opserations. + */ +static struct snd_soc_ops imx_3stack_ops = { + .startup = imx_3stack_startup, + .shutdown = imx_3stack_shutdown, + .hw_params = imx_3stack_audio_hw_params, +}; + +static void imx_3stack_init_dam(int ssi_port, int dai_port) +{ + unsigned int ssi_ptcr = 0; + unsigned int dai_ptcr = 0; + unsigned int ssi_pdcr = 0; + unsigned int dai_pdcr = 0; + /* SGTL5000 uses SSI1 or SSI2 via AUDMUX port dai_port for audio */ + + /* reset port ssi_port & dai_port */ + __raw_writel(0, DAM_PTCR(ssi_port)); + __raw_writel(0, DAM_PTCR(dai_port)); + __raw_writel(0, DAM_PDCR(ssi_port)); + __raw_writel(0, DAM_PDCR(dai_port)); + + /* set to synchronous */ + ssi_ptcr |= AUDMUX_PTCR_SYN; + dai_ptcr |= AUDMUX_PTCR_SYN; + +#if SGTL5000_SSI_MASTER + /* set Rx sources ssi_port <--> dai_port */ + ssi_pdcr |= AUDMUX_PDCR_RXDSEL(dai_port); + dai_pdcr |= AUDMUX_PDCR_RXDSEL(ssi_port); + + /* set Tx frame direction and source dai_port--> ssi_port output */ + ssi_ptcr |= AUDMUX_PTCR_TFSDIR; + ssi_ptcr |= AUDMUX_PTCR_TFSSEL(AUDMUX_FROM_TXFS, dai_port); + + /* set Tx Clock direction and source dai_port--> ssi_port output */ + ssi_ptcr |= AUDMUX_PTCR_TCLKDIR; + ssi_ptcr |= AUDMUX_PTCR_TCSEL(AUDMUX_FROM_TXFS, dai_port); +#else + /* set Rx sources ssi_port <--> dai_port */ + ssi_pdcr |= AUDMUX_PDCR_RXDSEL(dai_port); + dai_pdcr |= AUDMUX_PDCR_RXDSEL(ssi_port); + + /* set Tx frame direction and source ssi_port --> dai_port output */ + dai_ptcr |= AUDMUX_PTCR_TFSDIR; + dai_ptcr |= AUDMUX_PTCR_TFSSEL(AUDMUX_FROM_TXFS, ssi_port); + + /* set Tx Clock direction and source ssi_port--> dai_port output */ + dai_ptcr |= AUDMUX_PTCR_TCLKDIR; + dai_ptcr |= AUDMUX_PTCR_TCSEL(AUDMUX_FROM_TXFS, ssi_port); +#endif + + __raw_writel(ssi_ptcr, DAM_PTCR(ssi_port)); + __raw_writel(dai_ptcr, DAM_PTCR(dai_port)); + __raw_writel(ssi_pdcr, DAM_PDCR(ssi_port)); + __raw_writel(dai_pdcr, DAM_PDCR(dai_port)); +} + +/* imx_3stack machine connections to the codec pins */ +static const struct snd_soc_dapm_route audio_map[] = { + + /* Mic Jack --> MIC_IN (with automatic bias) */ + {"MIC_IN", NULL, "Mic Jack"}, + + /* Line in Jack --> LINE_IN */ + {"LINE_IN", NULL, "Line In Jack"}, + + /* HP_OUT --> Headphone Jack */ + {"Headphone Jack", NULL, "HP_OUT"}, + + /* LINE_OUT --> Ext Speaker */ + {"Ext Spk", NULL, "LINE_OUT"}, +}; + +static int sgtl5000_jack_func; +static int sgtl5000_spk_func; +static int sgtl5000_line_in_func; + +static void headphone_detect_handler(struct work_struct *work) +{ + struct imx_3stack_priv *priv = &card_priv; + struct platform_device *pdev = priv->pdev; + struct mxc_audio_platform_data *plat = pdev->dev.platform_data; + int hp_status; + + sysfs_notify(&pdev->dev.kobj, NULL, "headphone"); + hp_status = plat->hp_status(); + if (hp_status) + set_irq_type(plat->hp_irq, IRQ_TYPE_EDGE_FALLING); + else + set_irq_type(plat->hp_irq, IRQ_TYPE_EDGE_RISING); + enable_irq(plat->hp_irq); +} + +static DECLARE_DELAYED_WORK(hp_event, headphone_detect_handler); + +static irqreturn_t imx_headphone_detect_handler(int irq, void *data) +{ + disable_irq_nosync(irq); + schedule_delayed_work(&hp_event, msecs_to_jiffies(200)); + return IRQ_HANDLED; +} + +static ssize_t show_headphone(struct device_driver *dev, char *buf) +{ + struct imx_3stack_priv *priv = &card_priv; + struct platform_device *pdev = priv->pdev; + struct mxc_audio_platform_data *plat = pdev->dev.platform_data; + u16 hp_status; + + /* determine whether hp is plugged in */ + hp_status = plat->hp_status(); + + if (hp_status == 0) + strcpy(buf, "speaker\n"); + else + strcpy(buf, "headphone\n"); + + return strlen(buf); +} + +static DRIVER_ATTR(headphone, S_IRUGO | S_IWUSR, show_headphone, NULL); + +static const char *jack_function[] = { "off", "on"}; + +static const char *spk_function[] = { "off", "on" }; + +static const char *line_in_function[] = { "off", "on" }; + +static const struct soc_enum sgtl5000_enum[] = { + SOC_ENUM_SINGLE_EXT(2, jack_function), + SOC_ENUM_SINGLE_EXT(2, spk_function), + SOC_ENUM_SINGLE_EXT(2, line_in_function), +}; + +static int sgtl5000_get_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = sgtl5000_jack_func; + return 0; +} + +static int sgtl5000_set_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (sgtl5000_jack_func == ucontrol->value.enumerated.item[0]) + return 0; + + sgtl5000_jack_func = ucontrol->value.enumerated.item[0]; + if (sgtl5000_jack_func) + snd_soc_dapm_enable_pin(codec, "Headphone Jack"); + else + snd_soc_dapm_disable_pin(codec, "Headphone Jack"); + + snd_soc_dapm_sync(codec); + return 1; +} + +static int sgtl5000_get_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = sgtl5000_spk_func; + return 0; +} + +static int sgtl5000_set_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (sgtl5000_spk_func == ucontrol->value.enumerated.item[0]) + return 0; + + sgtl5000_spk_func = ucontrol->value.enumerated.item[0]; + if (sgtl5000_spk_func) + snd_soc_dapm_enable_pin(codec, "Ext Spk"); + else + snd_soc_dapm_disable_pin(codec, "Ext Spk"); + + snd_soc_dapm_sync(codec); + return 1; +} + +static int sgtl5000_get_line_in(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = sgtl5000_line_in_func; + return 0; +} + +static int sgtl5000_set_line_in(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (sgtl5000_line_in_func == ucontrol->value.enumerated.item[0]) + return 0; + + sgtl5000_line_in_func = ucontrol->value.enumerated.item[0]; + if (sgtl5000_line_in_func) + snd_soc_dapm_enable_pin(codec, "Line In Jack"); + else + snd_soc_dapm_disable_pin(codec, "Line In Jack"); + + snd_soc_dapm_sync(codec); + return 1; +} + +static int spk_amp_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct imx_3stack_priv *priv = &card_priv; + struct platform_device *pdev = priv->pdev; + struct mxc_audio_platform_data *plat = pdev->dev.platform_data; + + if (plat->amp_enable == NULL) + return 0; + + if (SND_SOC_DAPM_EVENT_ON(event)) + plat->amp_enable(1); + else + plat->amp_enable(0); + + return 0; +} + +/* imx_3stack card dapm widgets */ +static const struct snd_soc_dapm_widget imx_3stack_dapm_widgets[] = { + SND_SOC_DAPM_MIC("Mic Jack", NULL), + SND_SOC_DAPM_LINE("Line In Jack", NULL), + SND_SOC_DAPM_SPK("Ext Spk", spk_amp_event), + SND_SOC_DAPM_HP("Headphone Jack", NULL), +}; + +static const struct snd_kcontrol_new sgtl5000_machine_controls[] = { + SOC_ENUM_EXT("Jack Function", sgtl5000_enum[0], sgtl5000_get_jack, + sgtl5000_set_jack), + SOC_ENUM_EXT("Speaker Function", sgtl5000_enum[1], sgtl5000_get_spk, + sgtl5000_set_spk), + SOC_ENUM_EXT("Line In Function", sgtl5000_enum[1], sgtl5000_get_line_in, + sgtl5000_set_line_in), +}; + +#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE) +static int asrc_func; + +static const char *asrc_function[] = { + "disable", "32KHz", "44.1KHz", "48KHz", "96KHz" }; + +static const struct soc_enum asrc_enum[] = { + SOC_ENUM_SINGLE_EXT(5, asrc_function), +}; + +static int asrc_get_rate(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = asrc_func; + return 0; +} + +static int asrc_set_rate(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + if (asrc_func == ucontrol->value.enumerated.item[0]) + return 0; + + asrc_func = ucontrol->value.enumerated.item[0]; + asrc_ssi_data.output_sample_rate = sgtl5000_rates[asrc_func]; + + return 1; +} + +static const struct snd_kcontrol_new asrc_controls[] = { + SOC_ENUM_EXT("ASRC", asrc_enum[0], asrc_get_rate, + asrc_set_rate), +}; +#endif + +static int imx_3stack_sgtl5000_init(struct snd_soc_codec *codec) +{ + int i, ret; + +#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE) + for (i = 0; i < ARRAY_SIZE(asrc_controls); i++) { + ret = snd_ctl_add(codec->card, + snd_soc_cnew(&asrc_controls[i], codec, NULL)); + if (ret < 0) + return ret; + } + asrc_ssi_data.output_sample_rate = sgtl5000_rates[asrc_func]; +#endif + + /* Add imx_3stack specific controls */ + for (i = 0; i < ARRAY_SIZE(sgtl5000_machine_controls); i++) { + ret = snd_ctl_add(codec->card, + snd_soc_cnew(&sgtl5000_machine_controls[i], + codec, NULL)); + if (ret < 0) + return ret; + } + + /* Add imx_3stack specific widgets */ + snd_soc_dapm_new_controls(codec, imx_3stack_dapm_widgets, + ARRAY_SIZE(imx_3stack_dapm_widgets)); + + /* Set up imx_3stack specific audio path audio_map */ + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_dapm_disable_pin(codec, "Line In Jack"); + + snd_soc_dapm_sync(codec); + + return 0; +} + +/* imx_3stack digital audio interface glue - connects codec <--> CPU */ +static struct snd_soc_dai_link imx_3stack_dai = { + .name = "SGTL5000", + .stream_name = "SGTL5000", + .codec_dai = &sgtl5000_dai, + .init = imx_3stack_sgtl5000_init, + .ops = &imx_3stack_ops, +}; + +static int imx_3stack_card_remove(struct platform_device *pdev) +{ + struct imx_3stack_priv *priv = &card_priv; + struct mxc_audio_platform_data *plat; + if (priv->pdev) { + plat = priv->pdev->dev.platform_data; + if (plat->finit) + plat->finit(); + } + + return 0; +} + +static struct snd_soc_card snd_soc_card_imx_3stack = { + .name = "imx-3stack", + .platform = &imx_soc_platform, + .dai_link = &imx_3stack_dai, + .num_links = 1, + .remove = imx_3stack_card_remove, +}; + +static struct snd_soc_device imx_3stack_snd_devdata = { + .card = &snd_soc_card_imx_3stack, + .codec_dev = &soc_codec_dev_sgtl5000, +}; + +static int __devinit imx_3stack_sgtl5000_probe(struct platform_device *pdev) +{ + struct mxc_audio_platform_data *plat = pdev->dev.platform_data; + struct imx_3stack_priv *priv = &card_priv; + struct snd_soc_dai *sgtl5000_cpu_dai; + struct sgtl5000_setup_data *setup; + + int ret = 0; + + priv->pdev = pdev; + + gpio_activate_audio_ports(); + imx_3stack_init_dam(plat->src_port, plat->ext_port); + + if (plat->src_port == 2) + sgtl5000_cpu_dai = imx_ssi_dai[2]; + else if (plat->src_port == 1) + sgtl5000_cpu_dai = imx_ssi_dai[0]; + else if (plat->src_port == 7) + sgtl5000_cpu_dai = imx_ssi_dai[4]; + + + imx_3stack_dai.cpu_dai = sgtl5000_cpu_dai; + + ret = driver_create_file(pdev->dev.driver, &driver_attr_headphone); + if (ret < 0) { + pr_err("%s:failed to create driver_attr_headphone\n", __func__); + goto sysfs_err; + } + + ret = -EINVAL; + if (plat->init && plat->init()) + goto err_plat_init; + + priv->sysclk = plat->sysclk; + + /* The SGTL5000 has an internal reset that is deasserted 8 SYS_MCLK + cycles after all power rails have been brought up. After this time + communication can start */ + + if (plat->hp_status()) + ret = request_irq(plat->hp_irq, + imx_headphone_detect_handler, + IRQ_TYPE_EDGE_FALLING, pdev->name, priv); + else + ret = request_irq(plat->hp_irq, + imx_headphone_detect_handler, + IRQ_TYPE_EDGE_RISING, pdev->name, priv); + if (ret < 0) { + pr_err("%s: request irq failed\n", __func__); + goto err_card_reg; + } + + setup = kzalloc(sizeof(struct sgtl5000_setup_data), GFP_KERNEL); + if (!setup) { + pr_err("%s: kzalloc sgtl5000_setup_data failed\n", __func__); + goto err_card_reg; + } + setup->clock_enable = plat->clock_enable; + imx_3stack_snd_devdata.codec_data = setup; + + sgtl5000_jack_func = 1; + sgtl5000_spk_func = 1; + sgtl5000_line_in_func = 0; + + return 0; + +err_card_reg: + if (plat->finit) + plat->finit(); +err_plat_init: + driver_remove_file(pdev->dev.driver, &driver_attr_headphone); +sysfs_err: + return ret; +} + +static int imx_3stack_sgtl5000_remove(struct platform_device *pdev) +{ + struct mxc_audio_platform_data *plat = pdev->dev.platform_data; + struct imx_3stack_priv *priv = &card_priv; + + free_irq(plat->hp_irq, priv); + + if (plat->finit) + plat->finit(); + + driver_remove_file(pdev->dev.driver, &driver_attr_headphone); + + return 0; +} + +static struct platform_driver imx_3stack_sgtl5000_audio_driver = { + .probe = imx_3stack_sgtl5000_probe, + .remove = imx_3stack_sgtl5000_remove, + .driver = { + .name = "imx-3stack-sgtl5000", + }, +}; + +static struct platform_device *imx_3stack_snd_device; + +static int __init imx_3stack_init(void) +{ + int ret; + + ret = platform_driver_register(&imx_3stack_sgtl5000_audio_driver); + if (ret) + return -ENOMEM; + + imx_3stack_snd_device = platform_device_alloc("soc-audio", 2); + if (!imx_3stack_snd_device) + return -ENOMEM; + + platform_set_drvdata(imx_3stack_snd_device, &imx_3stack_snd_devdata); + imx_3stack_snd_devdata.dev = &imx_3stack_snd_device->dev; + ret = platform_device_add(imx_3stack_snd_device); + + if (ret) + platform_device_put(imx_3stack_snd_device); + + return ret; +} + +static void __exit imx_3stack_exit(void) +{ + platform_driver_unregister(&imx_3stack_sgtl5000_audio_driver); + platform_device_unregister(imx_3stack_snd_device); +} + +module_init(imx_3stack_init); +module_exit(imx_3stack_exit); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("SGTL5000 Driver for i.MX 3STACK"); +MODULE_LICENSE("GPL"); |