/* * smdk_wm8580.c * * Copyright (c) 2009 Samsung Electronics Co. Ltd * Author: Jaswinder Singh * * 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. */ #include #include #include #include "../codecs/wm8580.h" #include "i2s.h" /* * Default CFG switch settings to use this driver: * * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On */ /* SMDK has a 12MHZ crystal attached to WM8580 */ #define SMDK_WM8580_FREQ 12000000 static int smdk_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 *codec_dai = rtd->codec_dai; unsigned int pll_out; int bfs, rfs, ret; switch (params_width(params)) { case 8: bfs = 16; break; case 16: bfs = 32; break; default: return -EINVAL; } /* The Fvco for WM8580 PLLs must fall within [90,100]MHz. * This criterion can't be met if we request PLL output * as {8000x256, 64000x256, 11025x256}Hz. * As a wayout, we rather change rfs to a minimum value that * results in (params_rate(params) * rfs), and itself, acceptable * to both - the CODEC and the CPU. */ switch (params_rate(params)) { case 16000: case 22050: case 32000: case 44100: case 48000: case 88200: case 96000: rfs = 256; break; case 64000: rfs = 384; break; case 8000: case 11025: rfs = 512; break; default: return -EINVAL; } pll_out = params_rate(params) * rfs; /* Set WM8580 to drive MCLK from its PLLA */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, WM8580_CLKSRC_PLLA); if (ret < 0) return ret; ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, SMDK_WM8580_FREQ, pll_out); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA, pll_out, SND_SOC_CLOCK_IN); if (ret < 0) return ret; return 0; } /* * SMDK WM8580 DAI operations. */ static struct snd_soc_ops smdk_ops = { .hw_params = smdk_hw_params, }; /* SMDK Playback widgets */ static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = { SND_SOC_DAPM_HP("Front", NULL), SND_SOC_DAPM_HP("Center+Sub", NULL), SND_SOC_DAPM_HP("Rear", NULL), SND_SOC_DAPM_MIC("MicIn", NULL), SND_SOC_DAPM_LINE("LineIn", NULL), }; /* SMDK-PAIFTX connections */ static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = { /* MicIn feeds AINL */ {"AINL", NULL, "MicIn"}, /* LineIn feeds AINL/R */ {"AINL", NULL, "LineIn"}, {"AINR", NULL, "LineIn"}, /* Front Left/Right are fed VOUT1L/R */ {"Front", NULL, "VOUT1L"}, {"Front", NULL, "VOUT1R"}, /* Center/Sub are fed VOUT2L/R */ {"Center+Sub", NULL, "VOUT2L"}, {"Center+Sub", NULL, "VOUT2R"}, /* Rear Left/Right are fed VOUT3L/R */ {"Rear", NULL, "VOUT3L"}, {"Rear", NULL, "VOUT3R"}, }; static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd) { /* Enabling the microphone requires the fitting of a 0R * resistor to connect the line from the microphone jack. */ snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn"); return 0; } enum { PRI_PLAYBACK = 0, PRI_CAPTURE, }; #define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ SND_SOC_DAIFMT_CBM_CFM) static struct snd_soc_dai_link smdk_dai[] = { [PRI_PLAYBACK] = { /* Primary Playback i/f */ .name = "WM8580 PAIF RX", .stream_name = "Playback", .cpu_dai_name = "samsung-i2s.2", .codec_dai_name = "wm8580-hifi-playback", .platform_name = "samsung-i2s.0", .codec_name = "wm8580.0-001b", .dai_fmt = SMDK_DAI_FMT, .ops = &smdk_ops, }, [PRI_CAPTURE] = { /* Primary Capture i/f */ .name = "WM8580 PAIF TX", .stream_name = "Capture", .cpu_dai_name = "samsung-i2s.2", .codec_dai_name = "wm8580-hifi-capture", .platform_name = "samsung-i2s.0", .codec_name = "wm8580.0-001b", .dai_fmt = SMDK_DAI_FMT, .init = smdk_wm8580_init_paiftx, .ops = &smdk_ops, }, }; static struct snd_soc_card smdk = { .name = "SMDK-I2S", .owner = THIS_MODULE, .dai_link = smdk_dai, .num_links = ARRAY_SIZE(smdk_dai), .dapm_widgets = smdk_wm8580_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets), .dapm_routes = smdk_wm8580_audio_map, .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map), }; static struct platform_device *smdk_snd_device; static int __init smdk_audio_init(void) { int ret; smdk_snd_device = platform_device_alloc("soc-audio", -1); if (!smdk_snd_device) return -ENOMEM; platform_set_drvdata(smdk_snd_device, &smdk); ret = platform_device_add(smdk_snd_device); if (ret) platform_device_put(smdk_snd_device); return ret; } module_init(smdk_audio_init); static void __exit smdk_audio_exit(void) { platform_device_unregister(smdk_snd_device); } module_exit(smdk_audio_exit); MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com"); MODULE_DESCRIPTION("ALSA SoC SMDK WM8580"); MODULE_LICENSE("GPL"); t;rostedt@goodmis.org>2017-01-31 09:13:49 -0500 commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch) tree370efda701f03cccf21e02bb1fdd3b852547d75c /tools/power/cpupower/utils/version-gen.sh parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/power/cpupower/utils/version-gen.sh')