/* * ALSA SoC driver for * Asahi Kasei AK5386 Single-ended 24-Bit 192kHz delta-sigma ADC * * (c) 2013 Daniel Mack * * 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. */ #include #include #include #include #include #include #include #include #include static const char * const supply_names[] = { "va", "vd" }; struct ak5386_priv { int reset_gpio; struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; }; static const struct snd_soc_dapm_widget ak5386_dapm_widgets[] = { SND_SOC_DAPM_INPUT("AINL"), SND_SOC_DAPM_INPUT("AINR"), }; static const struct snd_soc_dapm_route ak5386_dapm_routes[] = { { "Capture", NULL, "AINL" }, { "Capture", NULL, "AINR" }, }; static int ak5386_soc_probe(struct snd_soc_codec *codec) { struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec); return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies); } static int ak5386_soc_remove(struct snd_soc_codec *codec) { struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec); regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); return 0; } #ifdef CONFIG_PM static int ak5386_soc_suspend(struct snd_soc_codec *codec) { struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec); regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); return 0; } static int ak5386_soc_resume(struct snd_soc_codec *codec) { struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec); return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies); } #else #define ak5386_soc_suspend NULL #define ak5386_soc_resume NULL #endif /* CONFIG_PM */ static struct snd_soc_codec_driver soc_codec_ak5386 = { .probe = ak5386_soc_probe, .remove = ak5386_soc_remove, .suspend = ak5386_soc_suspend, .resume = ak5386_soc_resume, .component_driver = { .dapm_widgets = ak5386_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(ak5386_dapm_widgets), .dapm_routes = ak5386_dapm_routes, .num_dapm_routes = ARRAY_SIZE(ak5386_dapm_routes), }, }; static int ak5386_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { struct snd_soc_codec *codec = codec_dai->codec; format &= SND_SOC_DAIFMT_FORMAT_MASK; if (format != SND_SOC_DAIFMT_LEFT_J && format != SND_SOC_DAIFMT_I2S) { dev_err(codec->dev, "Invalid DAI format\n"); return -EINVAL; } return 0; } static int ak5386_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec); /* * From the datasheet: * * All external clocks (MCLK, SCLK and LRCK) must be present unless * PDN pin = “L”. If these clocks are not provided, the AK5386 may * draw excess current due to its use of internal dynamically * refreshed logic. If the external clocks are not present, place * the AK5386 in power-down mode (PDN pin = “L”). */ if (gpio_is_valid(priv->reset_gpio)) gpio_set_value(priv->reset_gpio, 1); return 0; } static int ak5386_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec); if (gpio_is_valid(priv->reset_gpio)) gpio_set_value(priv->reset_gpio, 0); return 0; } static const struct snd_soc_dai_ops ak5386_dai_ops = { .set_fmt = ak5386_set_dai_fmt, .hw_params = ak5386_hw_params, .hw_free = ak5386_hw_free, }; static struct snd_soc_dai_driver ak5386_dai = { .name = "ak5386-hifi", .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_192000, .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_3LE, }, .ops = &ak5386_dai_ops, }; #ifdef CONFIG_OF static const struct of_device_id ak5386_dt_ids[] = { { .compatible = "asahi-kasei,ak5386", }, { } }; MODULE_DEVICE_TABLE(of, ak5386_dt_ids); #endif static int ak5386_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct ak5386_priv *priv; int ret, i; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->reset_gpio = -EINVAL; dev_set_drvdata(dev, priv); for (i = 0; i < ARRAY_SIZE(supply_names); i++) priv->supplies[i].supply = supply_names[i]; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies), priv->supplies); if (ret < 0) return ret; if (of_match_device(of_match_ptr(ak5386_dt_ids), dev)) priv->reset_gpio = of_get_named_gpio(dev->of_node, "reset-gpio", 0); if (gpio_is_valid(priv->reset_gpio)) if (devm_gpio_request_one(dev, priv->reset_gpio, GPIOF_OUT_INIT_LOW, "AK5386 Reset")) priv->reset_gpio = -EINVAL; return snd_soc_register_codec(dev, &soc_codec_ak5386, &ak5386_dai, 1); } static int ak5386_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } static struct platform_driver ak5386_driver = { .probe = ak5386_probe, .remove = ak5386_remove, .driver = { .name = "ak5386", .of_match_table = of_match_ptr(ak5386_dt_ids), }, }; module_platform_driver(ak5386_driver); MODULE_DESCRIPTION("ASoC driver for AK5386 ADC"); MODULE_AUTHOR("Daniel Mack "); MODULE_LICENSE("GPL"); ac8f33554260fea1a8d43e6f8c4c5460115f45 /sound/i2c/i2c.c parentd5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c (diff)parent7c2cf1c4615cc2f576d0604406cdf0065f00b83b (diff)
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu: - use-after-free in algif_aead - modular aesni regression when pcbc is modular but absent - bug causing IO page faults in ccp - double list add in ccp - NULL pointer dereference in qat (two patches) - panic in chcr - NULL pointer dereference in chcr - out-of-bound access in chcr * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: chcr - Fix key length for RFC4106 crypto: algif_aead - Fix kernel panic on list_del crypto: aesni - Fix failure when pcbc module is absent crypto: ccp - Fix double add when creating new DMA command crypto: ccp - Fix DMA operations when IOMMU is enabled crypto: chcr - Check device is allocated before use crypto: chcr - Fix panic on dma_unmap_sg crypto: qat - zero esram only for DH85x devices crypto: qat - fix bar discovery for c62x
Diffstat (limited to 'sound/i2c/i2c.c')