/* * sound/soc/codecs/si476x.c -- Codec driver for SI476X chips * * Copyright (C) 2012 Innovative Converged Devices(ICD) * Copyright (C) 2013 Andrey Smirnov * * Author: Andrey Smirnov * * 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; version 2 of the License. * * 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. * */ #include #include #include #include #include #include #include #include #include enum si476x_audio_registers { SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202, }; enum si476x_digital_io_output_format { SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11, SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8, }; #define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \ (0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)) #define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e) enum si476x_daudio_formats { SI476X_DAUDIO_MODE_I2S = (0x0 << 1), SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1), SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1), SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1), SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1), SI476X_DAUDIO_MODE_IB = (1 << 5), SI476X_DAUDIO_MODE_IF = (1 << 6), }; enum si476x_pcm_format { SI476X_PCM_FORMAT_S8 = 2, SI476X_PCM_FORMAT_S16_LE = 4, SI476X_PCM_FORMAT_S20_3LE = 5, SI476X_PCM_FORMAT_S24_LE = 6, }; static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("LOUT"), SND_SOC_DAPM_OUTPUT("ROUT"), }; static const struct snd_soc_dapm_route si476x_dapm_routes[] = { { "Capture", NULL, "LOUT" }, { "Capture", NULL, "ROUT" }, }; static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev); int err; u16 format = 0; if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) return -EINVAL; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_DSP_A: format |= SI476X_DAUDIO_MODE_DSP_A; break; case SND_SOC_DAIFMT_DSP_B: format |= SI476X_DAUDIO_MODE_DSP_B; break; case SND_SOC_DAIFMT_I2S: format |= SI476X_DAUDIO_MODE_I2S; break; case SND_SOC_DAIFMT_RIGHT_J: format |= SI476X_DAUDIO_MODE_RIGHT_J; break; case SND_SOC_DAIFMT_LEFT_J: format |= SI476X_DAUDIO_MODE_LEFT_J; break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_DSP_A: case SND_SOC_DAIFMT_DSP_B: switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_IB_NF: format |= SI476X_DAUDIO_MODE_IB; break; default: return -EINVAL; } break; case SND_SOC_DAIFMT_I2S: case SND_SOC_DAIFMT_RIGHT_J: case SND_SOC_DAIFMT_LEFT_J: switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_IB_IF: format |= SI476X_DAUDIO_MODE_IB | SI476X_DAUDIO_MODE_IF; break; case SND_SOC_DAIFMT_IB_NF: format |= SI476X_DAUDIO_MODE_IB; break; case SND_SOC_DAIFMT_NB_IF: format |= SI476X_DAUDIO_MODE_IF; break; default: return -EINVAL; } break; default: return -EINVAL; } si476x_core_lock(core); err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK, format); si476x_core_unlock(core); if (err < 0) { dev_err(codec_dai->codec->dev, "Failed to set output format\n"); return err; } return 0; } static int si476x_codec_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev); int rate, width, err; rate = params_rate(params); if (rate < 32000 || rate > 48000) { dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate); return -EINVAL; } switch (params_width(params)) { case 8: width = SI476X_PCM_FORMAT_S8; break; case 16: width = SI476X_PCM_FORMAT_S16_LE; break; case 20: width = SI476X_PCM_FORMAT_S20_3LE; break; case 24: width = SI476X_PCM_FORMAT_S24_LE; break; default: return -EINVAL; } si476x_core_lock(core); err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE, rate); if (err < 0) { dev_err(dai->codec->dev, "Failed to set sample rate\n"); goto out; } err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK, (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)); if (err < 0) { dev_err(dai->codec->dev, "Failed to set output width\n"); goto out; } out: si476x_core_unlock(core); return err; } static const struct snd_soc_dai_ops si476x_dai_ops = { .hw_params = si476x_codec_hw_params, .set_fmt = si476x_codec_set_dai_fmt, }; static struct snd_soc_dai_driver si476x_dai = { .name = "si476x-codec", .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE }, .ops = &si476x_dai_ops, }; static struct regmap *si476x_get_regmap(struct device *dev) { return dev_get_regmap(dev->parent, NULL); } static struct snd_soc_codec_driver soc_codec_dev_si476x = { .get_regmap = si476x_get_regmap, .component_driver = { .dapm_widgets = si476x_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets), .dapm_routes = si476x_dapm_routes, .num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes), }, }; static int si476x_platform_probe(struct platform_device *pdev) { return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x, &si476x_dai, 1); } static int si476x_platform_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } MODULE_ALIAS("platform:si476x-codec"); static struct platform_driver si476x_platform_driver = { .driver = { .name = "si476x-codec", }, .probe = si476x_platform_probe, .remove = si476x_platform_remove, }; module_platform_driver(si476x_platform_driver); MODULE_AUTHOR("Andrey Smirnov "); MODULE_DESCRIPTION("ASoC Si4761/64 codec driver"); MODULE_LICENSE("GPL"); intel_fbdev_set_par+0x18/0x70 [i915] fb_set_var+0x236/0x460 fbcon_blank+0x30f/0x350 do_unblank_screen+0xd2/0x1a0 vt_ioctl+0x507/0x12a0 tty_ioctl+0x355/0xc30 do_vfs_ioctl+0xa3/0x5e0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+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/pci/rme32.c')