/* * Copyright 2011 Freescale Semiconductor, Inc. * * 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. * * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include #include #include #include #include #include #include #include #include #include "../codecs/sgtl5000.h" #include "mxs-saif.h" static int mxs_sgtl5000_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; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; unsigned int rate = params_rate(params); u32 mclk; int ret; /* sgtl5000 does not support 512*rate when in 96000 fs */ switch (rate) { case 96000: mclk = 256 * rate; break; default: mclk = 512 * rate; break; } /* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */ ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0); if (ret) { dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n", mclk / 1000000, mclk / 1000 % 1000); return ret; } /* The SAIF MCLK should be the same as SGTL5000_SYSCLK */ ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0); if (ret) { dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n", mclk / 1000000, mclk / 1000 % 1000); return ret; } return 0; } static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = { .hw_params = mxs_sgtl5000_hw_params, }; #define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ SND_SOC_DAIFMT_CBS_CFS) static struct snd_soc_dai_link mxs_sgtl5000_dai[] = { { .name = "HiFi Tx", .stream_name = "HiFi Playback", .codec_dai_name = "sgtl5000", .dai_fmt = MXS_SGTL5000_DAI_FMT, .ops = &mxs_sgtl5000_hifi_ops, .playback_only = true, }, { .name = "HiFi Rx", .stream_name = "HiFi Capture", .codec_dai_name = "sgtl5000", .dai_fmt = MXS_SGTL5000_DAI_FMT, .ops = &mxs_sgtl5000_hifi_ops, .capture_only = true, }, }; static struct snd_soc_card mxs_sgtl5000 = { .name = "mxs_sgtl5000", .owner = THIS_MODULE, .dai_link = mxs_sgtl5000_dai, .num_links = ARRAY_SIZE(mxs_sgtl5000_dai), }; static int mxs_sgtl5000_probe(struct platform_device *pdev) { struct snd_soc_card *card = &mxs_sgtl5000; int ret, i; struct device_node *np = pdev->dev.of_node; struct device_node *saif_np[2], *codec_np; saif_np[0] = of_parse_phandle(np, "saif-controllers", 0); saif_np[1] = of_parse_phandle(np, "saif-controllers", 1); codec_np = of_parse_phandle(np, "audio-codec", 0); if (!saif_np[0] || !saif_np[1] || !codec_np) { dev_err(&pdev->dev, "phandle missing or invalid\n"); return -EINVAL; } for (i = 0; i < 2; i++) { mxs_sgtl5000_dai[i].codec_name = NULL; mxs_sgtl5000_dai[i].codec_of_node = codec_np; mxs_sgtl5000_dai[i].cpu_dai_name = NULL; mxs_sgtl5000_dai[i].cpu_of_node = saif_np[i]; mxs_sgtl5000_dai[i].platform_name = NULL; mxs_sgtl5000_dai[i].platform_of_node = saif_np[i]; } of_node_put(codec_np); of_node_put(saif_np[0]); of_node_put(saif_np[1]); /* * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w). * The Sgtl5000 sysclk is derived from saif0 mclk and it's range * should be >= 8MHz and <= 27M. */ ret = mxs_saif_get_mclk(0, 44100 * 256, 44100); if (ret) { dev_err(&pdev->dev, "failed to get mclk\n"); return ret; } card->dev = &pdev->dev; platform_set_drvdata(pdev, card); ret = devm_snd_soc_register_card(&pdev->dev, card); if (ret) { dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); return ret; } return 0; } static int mxs_sgtl5000_remove(struct platform_device *pdev) { mxs_saif_put_mclk(0); return 0; } static const struct of_device_id mxs_sgtl5000_dt_ids[] = { { .compatible = "fsl,mxs-audio-sgtl5000", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids); static struct platform_driver mxs_sgtl5000_audio_driver = { .driver = { .name = "mxs-sgtl5000", .of_match_table = mxs_sgtl5000_dt_ids, }, .probe = mxs_sgtl5000_probe, .remove = mxs_sgtl5000_remove, }; module_platform_driver(mxs_sgtl5000_audio_driver); MODULE_AUTHOR("Freescale Semiconductor, Inc."); MODULE_DESCRIPTION("MXS ALSA SoC Machine driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:mxs-sgtl5000"); >
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 09:37:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 21:47:58 +0100
commit0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch)
treebe6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /sound/soc/codecs/twl6040.h
parent24c2503255d35c269b67162c397a1a1c1e02f6ce (diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'sound/soc/codecs/twl6040.h')