/* sound/soc/samsung/s3c24xx_simtec_hermes.c * * Copyright 2009 Simtec Electronics * * 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 "s3c24xx_simtec.h" static const struct snd_soc_dapm_widget dapm_widgets[] = { SND_SOC_DAPM_LINE("GSM Out", NULL), SND_SOC_DAPM_LINE("GSM In", NULL), SND_SOC_DAPM_LINE("Line In", NULL), SND_SOC_DAPM_LINE("Line Out", NULL), SND_SOC_DAPM_LINE("ZV", NULL), SND_SOC_DAPM_MIC("Mic Jack", NULL), SND_SOC_DAPM_HP("Headphone Jack", NULL), }; static const struct snd_soc_dapm_route base_map[] = { /* Headphone connected to HP{L,R}OUT and HP{L,R}COM */ { "Headphone Jack", NULL, "HPLOUT" }, { "Headphone Jack", NULL, "HPLCOM" }, { "Headphone Jack", NULL, "HPROUT" }, { "Headphone Jack", NULL, "HPRCOM" }, /* ZV connected to Line1 */ { "LINE1L", NULL, "ZV" }, { "LINE1R", NULL, "ZV" }, /* Line In connected to Line2 */ { "LINE2L", NULL, "Line In" }, { "LINE2R", NULL, "Line In" }, /* Microphone connected to MIC3R and MIC_BIAS */ { "MIC3L", NULL, "Mic Jack" }, /* GSM connected to MONO_LOUT and MIC3L (in) */ { "GSM Out", NULL, "MONO_LOUT" }, { "MIC3L", NULL, "GSM In" }, /* Speaker is connected to LINEOUT{LN,LP,RN,RP}, however we are * not using the DAPM to power it up and down as there it makes * a click when powering up. */ }; /** * simtec_hermes_init - initialise and add controls * @codec; The codec instance to attach to. * * Attach our controls and configure the necessary codec * mappings for our sound card instance. */ static int simtec_hermes_init(struct snd_soc_pcm_runtime *rtd) { simtec_audio_init(rtd); return 0; } static struct snd_soc_dai_link simtec_dai_aic33 = { .name = "tlv320aic33", .stream_name = "TLV320AIC33", .codec_name = "tlv320aic3x-codec.0-001a", .cpu_dai_name = "s3c24xx-iis", .codec_dai_name = "tlv320aic3x-hifi", .platform_name = "s3c24xx-iis", .init = simtec_hermes_init, }; /* simtec audio machine driver */ static struct snd_soc_card snd_soc_machine_simtec_aic33 = { .name = "Simtec-Hermes", .owner = THIS_MODULE, .dai_link = &simtec_dai_aic33, .num_links = 1, .dapm_widgets = dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(dapm_widgets), .dapm_routes = base_map, .num_dapm_routes = ARRAY_SIZE(base_map), }; static int simtec_audio_hermes_probe(struct platform_device *pd) { dev_info(&pd->dev, "probing....\n"); return simtec_audio_core_probe(pd, &snd_soc_machine_simtec_aic33); } static struct platform_driver simtec_audio_hermes_platdrv = { .driver = { .name = "s3c24xx-simtec-hermes-snd", .pm = simtec_audio_pm, }, .probe = simtec_audio_hermes_probe, .remove = simtec_audio_remove, }; module_platform_driver(simtec_audio_hermes_platdrv); MODULE_ALIAS("platform:s3c24xx-simtec-hermes-snd"); MODULE_AUTHOR("Ben Dooks "); MODULE_DESCRIPTION("ALSA SoC Simtec Audio support"); MODULE_LICENSE("GPL"); it();'>space:mode:
authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-02-01 17:45:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /drivers
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers')