/* * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip. * * Author: Nicolas Pitre * Created: Dec 02, 2004 * Copyright: MontaVista Software 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pxa2xx-ac97.h" static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97) { pxa2xx_ac97_try_warm_reset(ac97); pxa2xx_ac97_finish_reset(ac97); } static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97) { pxa2xx_ac97_try_cold_reset(ac97); pxa2xx_ac97_finish_reset(ac97); } static struct snd_ac97_bus_ops pxa2xx_ac97_ops = { .read = pxa2xx_ac97_read, .write = pxa2xx_ac97_write, .warm_reset = pxa2xx_ac97_warm_reset, .reset = pxa2xx_ac97_cold_reset, }; static struct pxad_param pxa2xx_ac97_pcm_stereo_in_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 11, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = { .addr = __PREG(PCDR), .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, .maxburst = 32, .filter_data = &pxa2xx_ac97_pcm_stereo_in_req, }; static struct pxad_param pxa2xx_ac97_pcm_stereo_out_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 12, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = { .addr = __PREG(PCDR), .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, .maxburst = 32, .filter_data = &pxa2xx_ac97_pcm_stereo_out_req, }; static struct pxad_param pxa2xx_ac97_pcm_aux_mono_out_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 10, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = { .addr = __PREG(MODR), .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, .maxburst = 16, .filter_data = &pxa2xx_ac97_pcm_aux_mono_out_req, }; static struct pxad_param pxa2xx_ac97_pcm_aux_mono_in_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 9, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = { .addr = __PREG(MODR), .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, .maxburst = 16, .filter_data = &pxa2xx_ac97_pcm_aux_mono_in_req, }; static struct pxad_param pxa2xx_ac97_pcm_aux_mic_mono_req = { .prio = PXAD_PRIO_LOWEST, .drcmr = 8, }; static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = { .addr = __PREG(MCDR), .addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES, .maxburst = 16, .filter_data = &pxa2xx_ac97_pcm_aux_mic_mono_req, }; static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { struct snd_dmaengine_dai_dma_data *dma_data; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) dma_data = &pxa2xx_ac97_pcm_stereo_out; else dma_data = &pxa2xx_ac97_pcm_stereo_in; snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); return 0; } static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { struct snd_dmaengine_dai_dma_data *dma_data; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) dma_data = &pxa2xx_ac97_pcm_aux_mono_out; else dma_data = &pxa2xx_ac97_pcm_aux_mono_in; snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); return 0; } static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) return -ENODEV; else snd_soc_dai_set_dma_data(cpu_dai, substream, &pxa2xx_ac97_pcm_mic_mono_in); return 0; } #define PXA2XX_AC97_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) static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = { .startup = pxa2xx_ac97_hifi_startup, }; static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = { .startup = pxa2xx_ac97_aux_startup, }; static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = { .startup = pxa2xx_ac97_mic_startup, }; /* * There is only 1 physical AC97 interface for pxa2xx, but it * has extra fifo's that can be used for aux DACs and ADCs. */ static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = { { .name = "pxa2xx-ac97", .bus_control = true, .playback = { .stream_name = "AC97 Playback", .channels_min = 2, .channels_max = 2, .rates = PXA2XX_AC97_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, .capture = { .stream_name = "AC97 Capture", .channels_min = 2, .channels_max = 2, .rates = PXA2XX_AC97_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, .ops = &pxa_ac97_hifi_dai_ops, }, { .name = "pxa2xx-ac97-aux", .bus_control = true, .playback = { .stream_name = "AC97 Aux Playback", .channels_min = 1, .channels_max = 1, .rates = PXA2XX_AC97_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, .capture = { .stream_name = "AC97 Aux Capture", .channels_min = 1, .channels_max = 1, .rates = PXA2XX_AC97_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, .ops = &pxa_ac97_aux_dai_ops, }, { .name = "pxa2xx-ac97-mic", .bus_control = true, .capture = { .stream_name = "AC97 Mic Capture", .channels_min = 1, .channels_max = 1, .rates = PXA2XX_AC97_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, .ops = &pxa_ac97_mic_dai_ops, }, }; static const struct snd_soc_component_driver pxa_ac97_component = { .name = "pxa-ac97", }; static int pxa2xx_ac97_dev_probe(struct platform_device *pdev) { int ret; if (pdev->id != -1) { dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n"); return -ENXIO; } ret = pxa2xx_ac97_hw_probe(pdev); if (ret) { dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret); return ret; } ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops); if (ret != 0) return ret; /* Punt most of the init to the SoC probe; we may need the machine * driver to do interesting things with the clocking to get us up * and running. */ return snd_soc_register_component(&pdev->dev, &pxa_ac97_component, pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver)); } static int pxa2xx_ac97_dev_remove(struct platform_device *pdev) { snd_soc_unregister_component(&pdev->dev); snd_soc_set_ac97_ops(NULL); pxa2xx_ac97_hw_remove(pdev); return 0; } #ifdef CONFIG_PM_SLEEP static int pxa2xx_ac97_dev_suspend(struct device *dev) { return pxa2xx_ac97_hw_suspend(); } static int pxa2xx_ac97_dev_resume(struct device *dev) { return pxa2xx_ac97_hw_resume(); } static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume); #endif static struct platform_driver pxa2xx_ac97_driver = { .probe = pxa2xx_ac97_dev_probe, .remove = pxa2xx_ac97_dev_remove, .driver = { .name = "pxa2xx-ac97", #ifdef CONFIG_PM_SLEEP .pm = &pxa2xx_ac97_pm_ops, #endif }, }; module_platform_driver(pxa2xx_ac97_driver); MODULE_AUTHOR("Nicolas Pitre"); MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:pxa2xx-ac97"); stpath+0x13/0x94 - i915 unpin_work workqueue: intel_unpin_work_fn+0x58/0x140 [i915] process_one_work+0x1f1/0x480 worker_thread+0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'sound/soc/codecs/wm8995.h')