/* * atmel_wm8904 - Atmel ASoC driver for boards with WM8904 codec. * * Copyright (C) 2012 Atmel * * Author: Bo Shen * * GPLv2 or later */ #include #include #include #include #include #include "../codecs/wm8904.h" #include "atmel_ssc_dai.h" static const struct snd_soc_dapm_widget atmel_asoc_wm8904_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_MIC("Mic", NULL), SND_SOC_DAPM_LINE("Line In Jack", NULL), }; static int atmel_asoc_wm8904_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; int ret; ret = snd_soc_dai_set_pll(codec_dai, WM8904_FLL_MCLK, WM8904_FLL_MCLK, 32768, params_rate(params) * 256); if (ret < 0) { pr_err("%s - failed to set wm8904 codec PLL.", __func__); return ret; } /* * As here wm8904 use FLL output as its system clock * so calling set_sysclk won't care freq parameter * then we pass 0 */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8904_CLK_FLL, 0, SND_SOC_CLOCK_IN); if (ret < 0) { pr_err("%s -failed to set wm8904 SYSCLK\n", __func__); return ret; } return 0; } static const struct snd_soc_ops atmel_asoc_wm8904_ops = { .hw_params = atmel_asoc_wm8904_hw_params, }; static struct snd_soc_dai_link atmel_asoc_wm8904_dailink = { .name = "WM8904", .stream_name = "WM8904 PCM", .codec_dai_name = "wm8904-hifi", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM, .ops = &atmel_asoc_wm8904_ops, }; static struct snd_soc_card atmel_asoc_wm8904_card = { .name = "atmel_asoc_wm8904", .owner = THIS_MODULE, .dai_link = &atmel_asoc_wm8904_dailink, .num_links = 1, .dapm_widgets = atmel_asoc_wm8904_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(atmel_asoc_wm8904_dapm_widgets), .fully_routed = true, }; static int atmel_asoc_wm8904_dt_init(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct device_node *codec_np, *cpu_np; struct snd_soc_card *card = &atmel_asoc_wm8904_card; struct snd_soc_dai_link *dailink = &atmel_asoc_wm8904_dailink; int ret; if (!np) { dev_err(&pdev->dev, "only device tree supported\n"); return -EINVAL; } ret = snd_soc_of_parse_card_name(card, "atmel,model"); if (ret) { dev_err(&pdev->dev, "failed to parse card name\n"); return ret; } ret = snd_soc_of_parse_audio_routing(card, "atmel,audio-routing"); if (ret) { dev_err(&pdev->dev, "failed to parse audio routing\n"); return ret; } cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0); if (!cpu_np) { dev_err(&pdev->dev, "failed to get dai and pcm info\n"); ret = -EINVAL; return ret; } dailink->cpu_of_node = cpu_np; dailink->platform_of_node = cpu_np; of_node_put(cpu_np); codec_np = of_parse_phandle(np, "atmel,audio-codec", 0); if (!codec_np) { dev_err(&pdev->dev, "failed to get codec info\n"); ret = -EINVAL; return ret; } dailink->codec_of_node = codec_np; of_node_put(codec_np); return 0; } static int atmel_asoc_wm8904_probe(struct platform_device *pdev) { struct snd_soc_card *card = &atmel_asoc_wm8904_card; struct snd_soc_dai_link *dailink = &atmel_asoc_wm8904_dailink; int id, ret; card->dev = &pdev->dev; ret = atmel_asoc_wm8904_dt_init(pdev); if (ret) { dev_err(&pdev->dev, "failed to init dt info\n"); return ret; } id = of_alias_get_id((struct device_node *)dailink->cpu_of_node, "ssc"); ret = atmel_ssc_set_audio(id); if (ret != 0) { dev_err(&pdev->dev, "failed to set SSC %d for audio\n", id); return ret; } ret = snd_soc_register_card(card); if (ret) { dev_err(&pdev->dev, "snd_soc_register_card failed\n"); goto err_set_audio; } return 0; err_set_audio: atmel_ssc_put_audio(id); return ret; } static int atmel_asoc_wm8904_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); struct snd_soc_dai_link *dailink = &atmel_asoc_wm8904_dailink; int id; id = of_alias_get_id((struct device_node *)dailink->cpu_of_node, "ssc"); snd_soc_unregister_card(card); atmel_ssc_put_audio(id); return 0; } #ifdef CONFIG_OF static const struct of_device_id atmel_asoc_wm8904_dt_ids[] = { { .compatible = "atmel,asoc-wm8904", }, { } }; MODULE_DEVICE_TABLE(of, atmel_asoc_wm8904_dt_ids); #endif static struct platform_driver atmel_asoc_wm8904_driver = { .driver = { .name = "atmel-wm8904-audio", .of_match_table = of_match_ptr(atmel_asoc_wm8904_dt_ids), .pm = &snd_soc_pm_ops, }, .probe = atmel_asoc_wm8904_probe, .remove = atmel_asoc_wm8904_remove, }; module_platform_driver(atmel_asoc_wm8904_driver); /* Module information */ MODULE_AUTHOR("Bo Shen "); MODULE_DESCRIPTION("ALSA SoC machine driver for Atmel EK with WM8904 codec"); MODULE_LICENSE("GPL"); t'>2017-02-01 08:37:27 +0100 commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch) tree55703c2ea8584e303e342090614e0aab3509ab21 /tools/objtool parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/objtool')