/* * PCM179X ASoC codec driver * * Copyright (c) Amarula Solutions B.V. 2013 * * Michael Trimarchi * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include "pcm179x.h" #define PCM179X_DAC_VOL_LEFT 0x10 #define PCM179X_DAC_VOL_RIGHT 0x11 #define PCM179X_FMT_CONTROL 0x12 #define PCM179X_MODE_CONTROL 0x13 #define PCM179X_SOFT_MUTE PCM179X_FMT_CONTROL #define PCM179X_FMT_MASK 0x70 #define PCM179X_FMT_SHIFT 4 #define PCM179X_MUTE_MASK 0x01 #define PCM179X_MUTE_SHIFT 0 #define PCM179X_ATLD_ENABLE (1 << 7) static const struct reg_default pcm179x_reg_defaults[] = { { 0x10, 0xff }, { 0x11, 0xff }, { 0x12, 0x50 }, { 0x13, 0x00 }, { 0x14, 0x00 }, { 0x15, 0x01 }, { 0x16, 0x00 }, { 0x17, 0x00 }, }; static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg) { return reg >= 0x10 && reg <= 0x17; } static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg) { bool accessible; accessible = pcm179x_accessible_reg(dev, reg); return accessible && reg != 0x16 && reg != 0x17; } struct pcm179x_private { struct regmap *regmap; unsigned int format; unsigned int rate; }; static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { struct snd_soc_codec *codec = codec_dai->codec; struct pcm179x_private *priv = snd_soc_codec_get_drvdata(codec); priv->format = format; return 0; } static int pcm179x_digital_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; struct pcm179x_private *priv = snd_soc_codec_get_drvdata(codec); int ret; ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE, PCM179X_MUTE_MASK, !!mute); if (ret < 0) return ret; return 0; } static int pcm179x_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 pcm179x_private *priv = snd_soc_codec_get_drvdata(codec); int val = 0, ret; priv->rate = params_rate(params); switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_RIGHT_J: switch (params_width(params)) { case 24: case 32: val = 2; break; case 16: val = 0; break; default: return -EINVAL; } break; case SND_SOC_DAIFMT_I2S: switch (params_width(params)) { case 24: case 32: val = 5; break; case 16: val = 4; break; default: return -EINVAL; } break; default: dev_err(codec->dev, "Invalid DAI format\n"); return -EINVAL; } val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE; ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL, PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val); if (ret < 0) return ret; return 0; } static const struct snd_soc_dai_ops pcm179x_dai_ops = { .set_fmt = pcm179x_set_dai_fmt, .hw_params = pcm179x_hw_params, .digital_mute = pcm179x_digital_mute, }; static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1); static const struct snd_kcontrol_new pcm179x_controls[] = { SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT, PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0, pcm179x_dac_tlv), SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0), SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0), }; static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("IOUTL+"), SND_SOC_DAPM_OUTPUT("IOUTL-"), SND_SOC_DAPM_OUTPUT("IOUTR+"), SND_SOC_DAPM_OUTPUT("IOUTR-"), }; static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = { { "IOUTL+", NULL, "Playback" }, { "IOUTL-", NULL, "Playback" }, { "IOUTR+", NULL, "Playback" }, { "IOUTR-", NULL, "Playback" }, }; static struct snd_soc_dai_driver pcm179x_dai = { .name = "pcm179x-hifi", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = SNDRV_PCM_RATE_CONTINUOUS, .rate_min = 10000, .rate_max = 200000, .formats = PCM1792A_FORMATS, }, .ops = &pcm179x_dai_ops, }; const struct regmap_config pcm179x_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 23, .reg_defaults = pcm179x_reg_defaults, .num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults), .writeable_reg = pcm179x_writeable_reg, .readable_reg = pcm179x_accessible_reg, }; EXPORT_SYMBOL_GPL(pcm179x_regmap_config); static struct snd_soc_codec_driver soc_codec_dev_pcm179x = { .component_driver = { .controls = pcm179x_controls, .num_controls = ARRAY_SIZE(pcm179x_controls), .dapm_widgets = pcm179x_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets), .dapm_routes = pcm179x_dapm_routes, .num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes), }, }; int pcm179x_common_init(struct device *dev, struct regmap *regmap) { struct pcm179x_private *pcm179x; pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private), GFP_KERNEL); if (!pcm179x) return -ENOMEM; pcm179x->regmap = regmap; dev_set_drvdata(dev, pcm179x); return snd_soc_register_codec(dev, &soc_codec_dev_pcm179x, &pcm179x_dai, 1); } EXPORT_SYMBOL_GPL(pcm179x_common_init); int pcm179x_common_exit(struct device *dev) { snd_soc_unregister_codec(dev); return 0; } EXPORT_SYMBOL_GPL(pcm179x_common_exit); MODULE_DESCRIPTION("ASoC PCM179X driver"); MODULE_AUTHOR("Michael Trimarchi "); MODULE_LICENSE("GPL"); intel_pstate: Disable energy efficiency optimization
Some Kabylake desktop processors may not reach max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'sound/soc/sti/sti_uniperif.c')