/* * bf6xx-i2s.c - Analog Devices BF6XX i2s interface driver * * Copyright (c) 2012 Analog Devices Inc. * * 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. * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include #include #include "bf6xx-sport.h" struct sport_params param; static int bfin_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { struct sport_device *sport = snd_soc_dai_get_drvdata(cpu_dai); struct device *dev = &sport->pdev->dev; int ret = 0; param.spctl &= ~(SPORT_CTL_OPMODE | SPORT_CTL_CKRE | SPORT_CTL_FSR | SPORT_CTL_LFS | SPORT_CTL_LAFS); switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_CKRE | SPORT_CTL_LFS; break; case SND_SOC_DAIFMT_DSP_A: param.spctl |= SPORT_CTL_FSR; break; case SND_SOC_DAIFMT_LEFT_J: param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_LFS | SPORT_CTL_LAFS; break; default: dev_err(dev, "%s: Unknown DAI format type\n", __func__); ret = -EINVAL; break; } param.spctl &= ~(SPORT_CTL_ICLK | SPORT_CTL_IFS); switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: break; case SND_SOC_DAIFMT_CBS_CFS: case SND_SOC_DAIFMT_CBM_CFS: case SND_SOC_DAIFMT_CBS_CFM: ret = -EINVAL; break; default: dev_err(dev, "%s: Unknown DAI master type\n", __func__); ret = -EINVAL; break; } return ret; } static int bfin_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct sport_device *sport = snd_soc_dai_get_drvdata(dai); struct device *dev = &sport->pdev->dev; int ret = 0; param.spctl &= ~SPORT_CTL_SLEN; switch (params_format(params)) { case SNDRV_PCM_FORMAT_S8: param.spctl |= 0x70; sport->wdsize = 1; break; case SNDRV_PCM_FORMAT_S16_LE: param.spctl |= 0xf0; sport->wdsize = 2; break; case SNDRV_PCM_FORMAT_S24_LE: param.spctl |= 0x170; sport->wdsize = 3; break; case SNDRV_PCM_FORMAT_S32_LE: param.spctl |= 0x1f0; sport->wdsize = 4; break; } if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { ret = sport_set_tx_params(sport, ¶m); if (ret) { dev_err(dev, "SPORT tx is busy!\n"); return ret; } } else { ret = sport_set_rx_params(sport, ¶m); if (ret) { dev_err(dev, "SPORT rx is busy!\n"); return ret; } } return 0; } #ifdef CONFIG_PM static int bfin_i2s_suspend(struct snd_soc_dai *dai) { struct sport_device *sport = snd_soc_dai_get_drvdata(dai); if (dai->capture_active) sport_rx_stop(sport); if (dai->playback_active) sport_tx_stop(sport); return 0; } static int bfin_i2s_resume(struct snd_soc_dai *dai) { struct sport_device *sport = snd_soc_dai_get_drvdata(dai); struct device *dev = &sport->pdev->dev; int ret; ret = sport_set_tx_params(sport, ¶m); if (ret) { dev_err(dev, "SPORT tx is busy!\n"); return ret; } ret = sport_set_rx_params(sport, ¶m); if (ret) { dev_err(dev, "SPORT rx is busy!\n"); return ret; } return 0; } #else #define bfin_i2s_suspend NULL #define bfin_i2s_resume NULL #endif #define BFIN_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \ SNDRV_PCM_RATE_96000) #define BFIN_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) static struct snd_soc_dai_ops bfin_i2s_dai_ops = { .hw_params = bfin_i2s_hw_params, .set_fmt = bfin_i2s_set_dai_fmt, }; static struct snd_soc_dai_driver bfin_i2s_dai = { .suspend = bfin_i2s_suspend, .resume = bfin_i2s_resume, .playback = { .channels_min = 1, .channels_max = 2, .rates = BFIN_I2S_RATES, .formats = BFIN_I2S_FORMATS, }, .capture = { .channels_min = 1, .channels_max = 2, .rates = BFIN_I2S_RATES, .formats = BFIN_I2S_FORMATS, }, .ops = &bfin_i2s_dai_ops, }; static const struct snd_soc_component_driver bfin_i2s_component = { .name = "bfin-i2s", }; static int bfin_i2s_probe(struct platform_device *pdev) { struct sport_device *sport; struct device *dev = &pdev->dev; int ret; sport = sport_create(pdev); if (!sport) return -ENODEV; /* register with the ASoC layers */ ret = snd_soc_register_component(dev, &bfin_i2s_component, &bfin_i2s_dai, 1); if (ret) { dev_err(dev, "Failed to register DAI: %d\n", ret); sport_delete(sport); return ret; } platform_set_drvdata(pdev, sport); return 0; } static int bfin_i2s_remove(struct platform_device *pdev) { struct sport_device *sport = platform_get_drvdata(pdev); snd_soc_unregister_component(&pdev->dev); sport_delete(sport); return 0; } static struct platform_driver bfin_i2s_driver = { .probe = bfin_i2s_probe, .remove = bfin_i2s_remove, .driver = { .name = "bfin-i2s", }, }; module_platform_driver(bfin_i2s_driver); MODULE_DESCRIPTION("Analog Devices BF6XX i2s interface driver"); MODULE_AUTHOR("Scott Jiang "); MODULE_LICENSE("GPL v2"); t/commit/sound/soc/samsung/smdk_spdif.c?id=566cf877a1fcb6d6dc0126b076aad062054c2637'>566cf877a1fcb6d6dc0126b076aad062054c2637 (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 'sound/soc/samsung/smdk_spdif.c')