/* * ALSA Soc PCM3008 codec support * * Author: Hugo Villeneuve * Copyright (C) 2008 Lyrtech inc * * Based on AC97 Soc codec, original copyright follow: * Copyright 2005 Wolfson Microelectronics PLC. * * 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. * * Generic PCM3008 support. */ #include #include #include #include #include #include #include #include #include #include #include "pcm3008.h" static int pcm3008_dac_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); struct pcm3008_setup_data *setup = codec->dev->platform_data; gpio_set_value_cansleep(setup->pdda_pin, SND_SOC_DAPM_EVENT_ON(event)); return 0; } static int pcm3008_adc_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); struct pcm3008_setup_data *setup = codec->dev->platform_data; gpio_set_value_cansleep(setup->pdad_pin, SND_SOC_DAPM_EVENT_ON(event)); return 0; } static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = { SND_SOC_DAPM_INPUT("VINL"), SND_SOC_DAPM_INPUT("VINR"), SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_dac_ev, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_adc_ev, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_OUTPUT("VOUTL"), SND_SOC_DAPM_OUTPUT("VOUTR"), }; static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = { { "PCM3008 Capture", NULL, "ADC" }, { "ADC", NULL, "VINL" }, { "ADC", NULL, "VINR" }, { "DAC", NULL, "PCM3008 Playback" }, { "VOUTL", NULL, "DAC" }, { "VOUTR", NULL, "DAC" }, }; #define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ SNDRV_PCM_RATE_48000) static struct snd_soc_dai_driver pcm3008_dai = { .name = "pcm3008-hifi", .playback = { .stream_name = "PCM3008 Playback", .channels_min = 1, .channels_max = 2, .rates = PCM3008_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .capture = { .stream_name = "PCM3008 Capture", .channels_min = 1, .channels_max = 2, .rates = PCM3008_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, }; static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = { .component_driver = { .dapm_widgets = pcm3008_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets), .dapm_routes = pcm3008_dapm_routes, .num_dapm_routes = ARRAY_SIZE(pcm3008_dapm_routes), }, }; static int pcm3008_codec_probe(struct platform_device *pdev) { struct pcm3008_setup_data *setup = pdev->dev.platform_data; int ret; if (!setup) return -EINVAL; /* DEM1 DEM0 DE-EMPHASIS_MODE * Low Low De-emphasis 44.1 kHz ON * Low High De-emphasis OFF * High Low De-emphasis 48 kHz ON * High High De-emphasis 32 kHz ON */ /* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */ ret = devm_gpio_request_one(&pdev->dev, setup->dem0_pin, GPIOF_OUT_INIT_HIGH, "codec_dem0"); if (ret != 0) return ret; /* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */ ret = devm_gpio_request_one(&pdev->dev, setup->dem1_pin, GPIOF_OUT_INIT_LOW, "codec_dem1"); if (ret != 0) return ret; /* Configure PDAD GPIO. */ ret = devm_gpio_request_one(&pdev->dev, setup->pdad_pin, GPIOF_OUT_INIT_LOW, "codec_pdad"); if (ret != 0) return ret; /* Configure PDDA GPIO. */ ret = devm_gpio_request_one(&pdev->dev, setup->pdda_pin, GPIOF_OUT_INIT_LOW, "codec_pdda"); if (ret != 0) return ret; return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm3008, &pcm3008_dai, 1); } static int pcm3008_codec_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } MODULE_ALIAS("platform:pcm3008-codec"); static struct platform_driver pcm3008_codec_driver = { .probe = pcm3008_codec_probe, .remove = pcm3008_codec_remove, .driver = { .name = "pcm3008-codec", }, }; module_platform_driver(pcm3008_codec_driver); MODULE_DESCRIPTION("Soc PCM3008 driver"); MODULE_AUTHOR("Hugo Villeneuve"); MODULE_LICENSE("GPL"); d class='ctrl'>
authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 16:00:48 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-01-30 15:18:56 +0100
commit08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch)
tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /drivers/usb/c67x00
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/usb/c67x00')