diff options
Diffstat (limited to 'sound/soc/jz4740/qi_lb60.c')
| -rw-r--r-- | sound/soc/jz4740/qi_lb60.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/sound/soc/jz4740/qi_lb60.c b/sound/soc/jz4740/qi_lb60.c new file mode 100644 index 00000000..c5fc339f --- /dev/null +++ b/sound/soc/jz4740/qi_lb60.c @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <linux/gpio.h> + +#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29) +#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4) + +static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget, + struct snd_kcontrol *ctrl, int event) +{ + int on = !SND_SOC_DAPM_EVENT_OFF(event); + + gpio_set_value(QI_LB60_SND_GPIO, on); + gpio_set_value(QI_LB60_AMP_GPIO, on); + + return 0; +} + +static const struct snd_soc_dapm_widget qi_lb60_widgets[] = { + SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event), + SND_SOC_DAPM_MIC("Mic", NULL), +}; + +static const struct snd_soc_dapm_route qi_lb60_routes[] = { + {"Mic", NULL, "MIC"}, + {"Speaker", NULL, "LOUT"}, + {"Speaker", NULL, "ROUT"}, +}; + +#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \ + SND_SOC_DAIFMT_NB_NF | \ + SND_SOC_DAIFMT_CBM_CFM) + +static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dapm_context *dapm = &codec->dapm; + int ret; + + snd_soc_dapm_nc_pin(dapm, "LIN"); + snd_soc_dapm_nc_pin(dapm, "RIN"); + + ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT); + if (ret < 0) { + dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret); + return ret; + } + + return 0; +} + +static struct snd_soc_dai_link qi_lb60_dai = { + .name = "jz4740", + .stream_name = "jz4740", + .cpu_dai_name = "jz4740-i2s", + .platform_name = "jz4740-pcm-audio", + .codec_dai_name = "jz4740-hifi", + .codec_name = "jz4740-codec", + .init = qi_lb60_codec_init, +}; + +static struct snd_soc_card qi_lb60 = { + .name = "QI LB60", + .dai_link = &qi_lb60_dai, + .num_links = 1, + + .dapm_widgets = qi_lb60_widgets, + .num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets), + .dapm_routes = qi_lb60_routes, + .num_dapm_routes = ARRAY_SIZE(qi_lb60_routes), +}; + +static struct platform_device *qi_lb60_snd_device; + +static const struct gpio qi_lb60_gpios[] = { + { QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" }, + { QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" }, +}; + +static int __init qi_lb60_init(void) +{ + int ret; + + qi_lb60_snd_device = platform_device_alloc("soc-audio", -1); + + if (!qi_lb60_snd_device) + return -ENOMEM; + + ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios)); + if (ret) { + pr_err("qi_lb60 snd: Failed to request gpios: %d\n", ret); + goto err_device_put; + } + + platform_set_drvdata(qi_lb60_snd_device, &qi_lb60); + + ret = platform_device_add(qi_lb60_snd_device); + if (ret) { + pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret); + goto err_unset_pdata; + } + + return 0; + +err_unset_pdata: + platform_set_drvdata(qi_lb60_snd_device, NULL); +/*err_gpio_free_array:*/ + gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios)); +err_device_put: + platform_device_put(qi_lb60_snd_device); + + return ret; +} +module_init(qi_lb60_init); + +static void __exit qi_lb60_exit(void) +{ + platform_device_unregister(qi_lb60_snd_device); + gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios)); +} +module_exit(qi_lb60_exit); + +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); +MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support"); +MODULE_LICENSE("GPL v2"); |