/* * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only 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. * * lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS * */ #include #include #include #include #include #include #include #include #include #include #include #include #include "lpass-lpaif-reg.h" #include "lpass.h" static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = { [MI2S_PRIMARY] = { .id = MI2S_PRIMARY, .name = "Primary MI2S", .playback = { .stream_name = "Primary Playback", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, [MI2S_SECONDARY] = { .id = MI2S_SECONDARY, .name = "Secondary MI2S", .playback = { .stream_name = "Secondary Playback", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, [MI2S_TERTIARY] = { .id = MI2S_TERTIARY, .name = "Tertiary MI2S", .capture = { .stream_name = "Tertiary Capture", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, [MI2S_QUATERNARY] = { .id = MI2S_QUATERNARY, .name = "Quatenary MI2S", .playback = { .stream_name = "Quatenary Playback", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .capture = { .stream_name = "Quatenary Capture", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, }; static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata, int direction) { struct lpass_variant *v = drvdata->variant; int chan = 0; if (direction == SNDRV_PCM_STREAM_PLAYBACK) { chan = find_first_zero_bit(&drvdata->dma_ch_bit_map, v->rdma_channels); if (chan >= v->rdma_channels) return -EBUSY; } else { chan = find_next_zero_bit(&drvdata->dma_ch_bit_map, v->wrdma_channel_start + v->wrdma_channels, v->wrdma_channel_start); if (chan >= v->wrdma_channel_start + v->wrdma_channels) return -EBUSY; } set_bit(chan, &drvdata->dma_ch_bit_map); return chan; } static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan) { clear_bit(chan, &drvdata->dma_ch_bit_map); return 0; } static int apq8016_lpass_init(struct platform_device *pdev) { struct lpass_data *drvdata = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; int ret; drvdata->pcnoc_mport_clk = devm_clk_get(dev, "pcnoc-mport-clk"); if (IS_ERR(drvdata->pcnoc_mport_clk)) { dev_err(&pdev->dev, "%s() error getting pcnoc-mport-clk: %ld\n", __func__, PTR_ERR(drvdata->pcnoc_mport_clk)); return PTR_ERR(drvdata->pcnoc_mport_clk); } ret = clk_prepare_enable(drvdata->pcnoc_mport_clk); if (ret) { dev_err(&pdev->dev, "%s() Error enabling pcnoc-mport-clk: %d\n", __func__, ret); return ret; } drvdata->pcnoc_sway_clk = devm_clk_get(dev, "pcnoc-sway-clk"); if (IS_ERR(drvdata->pcnoc_sway_clk)) { dev_err(&pdev->dev, "%s() error getting pcnoc-sway-clk: %ld\n", __func__, PTR_ERR(drvdata->pcnoc_sway_clk)); return PTR_ERR(drvdata->pcnoc_sway_clk); } ret = clk_prepare_enable(drvdata->pcnoc_sway_clk); if (ret) { dev_err(&pdev->dev, "%s() Error enabling pcnoc_sway_clk: %d\n", __func__, ret); return ret; } return 0; } static int apq8016_lpass_exit(struct platform_device *pdev) { struct lpass_data *drvdata = platform_get_drvdata(pdev); clk_disable_unprepare(drvdata->pcnoc_mport_clk); clk_disable_unprepare(drvdata->pcnoc_sway_clk); return 0; } static struct lpass_variant apq8016_data = { .i2sctrl_reg_base = 0x1000, .i2sctrl_reg_stride = 0x1000, .i2s_ports = 4, .irq_reg_base = 0x6000, .irq_reg_stride = 0x1000, .irq_ports = 3, .rdma_reg_base = 0x8400, .rdma_reg_stride = 0x1000, .rdma_channels = 2, .dmactl_audif_start = 1, .wrdma_reg_base = 0xB000, .wrdma_reg_stride = 0x1000, .wrdma_channel_start = 5, .wrdma_channels = 2, .dai_driver = apq8016_lpass_cpu_dai_driver, .num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver), .init = apq8016_lpass_init, .exit = apq8016_lpass_exit, .alloc_dma_channel = apq8016_lpass_alloc_dma_channel, .free_dma_channel = apq8016_lpass_free_dma_channel, }; static const struct of_device_id apq8016_lpass_cpu_device_id[] = { { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data }, {} }; MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id); static struct platform_driver apq8016_lpass_cpu_platform_driver = { .driver = { .name = "apq8016-lpass-cpu", .of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id), }, .probe = asoc_qcom_lpass_cpu_platform_probe, .remove = asoc_qcom_lpass_cpu_platform_remove, }; module_platform_driver(apq8016_lpass_cpu_platform_driver); MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver"); MODULE_LICENSE("GPL v2"); shutting down the X server. The call chains were different: - VT ioctl(KDSETMODE, KD_TEXT): intel_cleanup_plane_fb+0x5b/0xa0 [i915] drm_atomic_helper_cleanup_planes+0x6f/0x90 [drm_kms_helper] intel_atomic_commit_tail+0x749/0xfe0 [i915] intel_atomic_commit+0x3cb/0x4f0 [i915] drm_atomic_commit+0x4b/0x50 [drm] restore_fbdev_mode+0x14c/0x2a0 [drm_kms_helper] drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper] drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper] 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 'tools/perf/arch/x86/tests/insn-x86-dat-src.c')