Richard Fitzgerald 769c1b7929 ASoC: cs35l56: Prevent races when soft-resetting using SPI control ... When SPI is used for control, the driver must hold the SPI bus lock while issuing the sequence of writes to perform a soft reset. >From the time the driver writes the SYSTEM_RESET command until the driver does a write to terminate the reset, there must not be any activity on the SPI bus lines. If there is any SPI activity during the soft-reset, another soft-reset will be triggered. The state of the SPI chip select is irrelevant. A repeated soft-reset does not in itself cause any problems, and it is not an infinite loop. The problem is a race between these resets and the driver polling for boot completion. There is a time window between soft resets where the driver could read HALO_STATE as 2 (fully booted) while the chip is actually soft-resetting. Although this window is small, it is long enough that it is possible to hit it in normal operation. To prevent this race and ensure the chip really is fully booted, the driver calls spi_bus_lock() to prevent other activity while resetting. It then issues the SYSTEM_RESET mailbox command. After allowing sufficient time for reset to take effect, the driver issues a PING mailbox command, which will force completion of the full soft-reset sequence. The SPI bus lock can then be released. The mailbox is checked for any boot or wakeup response from the firmware, before the value in HALO_STATE will be trusted. This does not affect SoundWire or I2C control. Fixes: 8a731fd37f ("ASoC: cs35l56: Move utility functions to shared file") Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://patch.msgid.link/20250225131843.113752-3-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>		2025-02-25 15:06:58 +00:00
..
ac97	driver core: have match() callback in struct bus_type take a const *	2024-07-03 15:16:54 +02:00
sof	ASoC: SOF: ext_manifest: Add missing ext_manifest type for PROBE_INFO	2024-11-07 13:03:22 +00:00
ac97_codec.h	ALSA: mark all struct bus_type as const	2023-12-30 10:10:41 +01:00
aci.h	ALSA: opti9xx: Use standard print API	2024-08-08 07:49:45 +02:00
acp63_chip_offset_byte.h	ASoC: amd: update ps platform acp header file	2023-02-03 12:04:02 +00:00
ad1816a.h
ad1843.h
ak4xxx-adda.h
ak4113.h
ak4114.h
ak4117.h
ak4531_codec.h	ALSA: ens137x: Replace with DEFINE_SIMPLE_DEV_PM_OPS()	2024-02-12 11:50:24 +01:00
ak4641.h
alc5623.h
asequencer.h	ALSA: seq: Add UMP support	2023-05-23 12:11:21 +02:00
asound.h
asoundef.h	ALSA: IEC958 definition for consumer status channel update	2024-09-07 10:42:17 +02:00
compress_driver.h	ALSA: compress_offload: Add missing descriptions in structs	2024-11-13 13:54:27 +01:00
control.h	Merge branch 'topic/control-lookup-rwlock' into for-next	2024-08-09 14:25:24 +02:00
core.h	Merge branch 'topic/control-lookup-rwlock' into for-next	2024-08-09 14:25:24 +02:00
cs-amp-lib.h	ASoC: cs-amp-lib: Add KUnit test for calibration helpers	2024-03-04 20:27:35 +00:00
cs35l33.h
cs35l34.h
cs35l35.h
cs35l36.h
cs35l41.h	ASoC: Constify channel mapping array arguments in set_channel_map()	2024-05-27 01:30:58 +01:00
cs35l56.h	ASoC: cs35l56: Prevent races when soft-resetting using SPI control	2025-02-25 15:06:58 +00:00
cs42l42.h	ASoC: cs42l42: Remove redundant delays in suspend().	2024-02-19 17:02:18 +00:00
cs42l43.h	ASoC: cs42l43: Add support for the cs42l43	2023-08-18 23:41:54 +01:00
cs42l52.h
cs42l56.h
cs42l73.h
cs4231-regs.h
cs4271.h	ASoC: cs4271: Convert to GPIO descriptors	2023-12-01 16:59:21 +00:00
cs8403.h
cs8427.h
da7213.h
da7218.h
da7219-aad.h	ASoC: da7219: Add Jack insertion detection polarity	2023-05-23 18:49:36 +01:00
da7219.h
da9055.h
designware_i2s.h	ASoC: dwc: i2s: Add StarFive JH7110 SoC support	2023-08-23 13:56:40 +01:00
dmaengine_pcm.h	ALSA: dmaengine: Synchronize dma channel after drop()	2024-06-11 17:13:31 +01:00
emu10k1_synth.h
emu10k1.h	Merge branch 'topic/emu10k1-fix' into for-next	2024-04-28 12:00:57 +02:00
emu8000_reg.h
emu8000.h	ALSA: sb: Allocate resources with device-managed APIs	2021-07-19 16:17:14 +02:00
emux_legacy.h
emux_synth.h	ALSA: synth: Save a few bytes of memory when registering a 'snd_emux'	2024-01-22 13:04:22 +01:00
es1688.h	ALSA: es1688: Use standard print API	2024-08-08 07:47:24 +02:00
graph_card.h	ASoC: simple_card_utils.h: convert not to use asoc_xxx()	2023-09-25 14:16:14 +02:00
gus.h
hda_chmap.h
hda_codec.h	ALSA: hda: codec: Reduce CONFIG_PM dependencies	2024-05-08 18:05:08 +02:00
hda_component.h
hda_hwdep.h
hda_i915.h	ALSA: hda: i915: Remove extra argument from snd_hdac_i915_init	2023-10-19 14:56:25 +02:00
hda_register.h	ALSA: hda: Fix all stream interrupts definition	2024-10-14 12:00:52 +02:00
hda_regmap.h
hda_verbs.h	ALSA: cleanup double word in comment	2022-02-11 15:18:56 +01:00
hda-mlink.h	ASoC: SOF: Intel: hda-mlink: expose unlocked interrupt enable routine	2024-10-11 12:06:56 +01:00
hdaudio_ext.h	ALSA: hda: Fix compilation of snd_hdac_adsp_xxx() helpers	2025-01-10 17:46:09 +01:00
hdaudio.h	ALSA: hda: fix trigger_tstamp_latched	2024-10-02 12:50:24 +02:00
hdmi-codec.h	ASoC: hdmi-codec: move no_capture_mute to struct hdmi_codec_pdata	2025-01-04 08:47:10 +02:00
hwdep.h	ALSA: hwdep: Don't embed device	2023-08-17 09:24:01 +02:00
i2c.h
info.h	ALSA: info: Remove unused function declarations	2023-08-08 14:45:45 +02:00
initval.h
intel-dsp-config.h	ASoC: Intel: avs: PCI driver implementation	2022-05-17 11:58:04 +01:00
intel-nhlt.h	ALSA: hda: intel-nhlt: add intel_nhlt_ssp_device_type() function	2024-03-22 12:40:46 +01:00
jack.h	ALSA: jack: Access input_dev under mutex	2022-04-12 12:19:05 +02:00
madera-pdata.h	ASoC: madera: Replace kernel.h with the necessary inclusions	2022-07-05 13:00:49 +01:00
max9768.h	ASoC: max9768: Convert to use GPIO descriptors	2023-09-11 12:50:05 +01:00
max98088.h
max98090.h
max98095.h
memalloc.h	ALSA: memalloc: Let IOMMU handle S/G primarily	2024-08-01 12:45:49 +02:00
minors.h
mixer_oss.h
mpu401.h
omap-hdmi-audio.h
opl3.h	ALSA: opl3: Replace with __packed attribute	2023-10-26 09:43:15 +02:00
opl4.h
pcm_drm_eld.h
pcm_iec958.h	ALSA: iec958: Split status creation and fill	2021-06-08 17:05:41 +02:00
pcm_oss.h
pcm_params.h	ALSA: hda: Upgrade stream-format infrastructure	2023-11-27 17:27:41 +01:00
pcm-indirect.h	ALSA: pcm: Improved XRUN handling for indirect PCM helpers	2023-03-24 14:52:58 +01:00
pcm.h	ALSA: Align the syntax of iov_iter helpers with standard ones	2024-12-30 12:50:04 +01:00
pt2258.h
pxa2xx-lib.h	Input: touchscreen: use wrapper for pxa2xx ac97 registers	2022-05-07 22:55:48 +02:00
rawmidi.h	ALSA: rawmidi: Make tied_device=0 as default / unknown	2025-01-14 16:52:07 +01:00
rt286.h
rt298.h
rt1015.h
rt1318.h	ASoC: rt1318: Add RT1318 audio amplifier driver	2024-06-19 14:50:34 +01:00
rt5514.h
rt5659.h
rt5660.h
rt5663.h
rt5665.h	ASoC: rt5665: Convert to use GPIO descriptors	2023-08-17 15:10:11 +01:00
rt5668.h	ASoC: rt5668: Convert to use GPIO descriptors	2023-08-17 15:10:12 +01:00
rt5682.h	ASoC: rt5682: Convert to use GPIO descriptors	2023-08-17 15:10:13 +01:00
rt5682s.h	ASoC: rt5682s: Add LDO output selection for dacref	2023-11-14 17:39:27 +00:00
sb.h	ALSA: als4000: Replace with DEFINE_SIMPLE_DEV_PM_OPS()	2024-02-12 11:50:24 +01:00
sb16_csp.h
sdca_function.h	sound updates for 6.14-rc1	2025-01-24 07:54:34 -08:00
sdca.h	ASoC: SDCA: Add bounds check for function address	2024-12-24 22:44:55 +00:00
sdw.h	sound: sdw: Add hw_params to SoundWire config helper function	2022-11-28 13:04:24 +00:00
seq_device.h	ALSA: seq: Bind UMP device	2023-05-23 12:11:33 +02:00
seq_kernel.h	ALSA: seq: Remove unused declarations	2024-08-17 16:32:31 +02:00
seq_midi_emul.h
seq_midi_event.h
seq_oss_legacy.h
seq_oss.h
seq_virmidi.h
sh_dac_audio.h
sh_fsi.h
simple_card_utils.h	ASoC: Updates for v6.14	2025-01-20 16:15:07 +01:00
simple_card.h	ASoC: remove asoc_xxx() compatible macro	2023-09-26 17:18:45 +02:00
snd_wavefront.h	ALSA: wavefront: Use standard print API	2024-08-08 07:49:46 +02:00
soc_sdw_utils.h	ASoC: sdw_utils: cs_amp: Assign non-overlapping TDM masks for each codec on a bus	2024-12-03 12:36:28 +00:00
soc-acpi-intel-match.h	ASoC: Intel: soc-acpi: add PTL match tables	2024-08-02 14:04:55 +01:00
soc-acpi-intel-ssp-common.h	ASoC: Intel: ssp-common: get codec tplg suffix function	2024-03-28 13:58:14 +00:00
soc-acpi.h	ASoC: soc-acpi: introduce new 'machine check' callback	2024-10-17 18:42:14 +01:00
soc-card.h	ASoC: Drop snd_soc_*_get_kcontrol_locked()	2024-08-09 14:24:55 +02:00
soc-component.h	ASoC: Drop snd_soc_*_get_kcontrol_locked()	2024-08-09 14:24:55 +02:00
soc-dai.h	ASoC: soc-dai: add snd_soc_dai_prepare() and use it internally	2025-01-15 13:11:18 +00:00
soc-dapm.h	ASoC: dapm: Use unsigned for number of widgets in snd_soc_dapm_new_controls()	2024-07-03 21:43:40 +01:00
soc-dpcm.h	ASoC: soc-pcm: makes snd_soc_dpcm_can_be_xxx() local function	2024-08-28 13:02:20 +01:00
soc-jack.h	ASoC: soc-jack: Get rid of legacy GPIO support	2024-03-26 17:13:45 +00:00
soc-link.h	ASoC: soc-pcm: care trigger rollback	2020-12-09 12:13:38 +00:00
soc-topology.h	ASoC: topology: Constify an argument of snd_soc_tplg_component_load()	2024-05-27 01:31:15 +01:00
soc.h	ASoC: soc-core: Enable to use extra format on each DAI	2025-01-13 14:16:55 +00:00
sof.h	ASoC: SOF: sof-audio: add sof_dai_get_tdm_slots function	2024-05-29 11:10:54 +01:00
soundfont.h	ALSA: emux: Use standard print API	2024-08-08 07:49:46 +02:00
spear_dma.h
spear_spdif.h
sta32x.h
sta350.h
tas2552-plat.h
tas2563-tlv.h	ASoC: tas2781: mark const variables tas2563_dvc_table as __maybe_unused	2024-08-22 13:34:12 +01:00
tas2781-dsp.h	ASoc: tas2781: Enable RCA-based playback without DSP firmware download	2024-06-18 16:45:53 +01:00
tas2781-tlv.h	ASoC: tas2781: Fix a compiling warning reported by robot kernel test due to adding tas2563_dvc_table	2024-08-02 14:05:30 +01:00
tas2781.h	ALSA: hda/tas2781: Add speaker id check for ASUS projects	2024-11-26 08:54:08 +01:00
tas5086.h
tea6330t.h
timer.h
tlv.h
tlv320aic32x4.h
tlv320dac33-plat.h
tpa6130a2-plat.h
uda1380.h
ump_convert.h	ALSA: ump: Transmit RPN/NRPN message at each MSB/LSB data reception	2024-07-31 15:08:18 +02:00
ump_msg.h	ALSA: ump: Support UMP Endpoint and Function Block parsing	2023-06-12 18:22:26 +02:00
ump.h	ALSA: seq: Notify UMP EP and FB changes	2025-01-12 13:12:21 +01:00
util_mem.h
vx_core.h	ALSA: vx_core: Drop unused dev field	2024-08-08 07:47:23 +02:00
wavefront.h	ALSA: wavefront: Drop obsoleted comments and definitions	2023-10-26 09:43:24 +02:00
wm0010.h	ASoC: wm0010: Convert to GPIO descriptors	2023-12-08 14:31:57 +00:00
wm2000.h
wm2200.h	ASoC: wm2200: Convert to GPIO descriptors	2023-12-08 14:31:59 +00:00
wm5100.h	ASoC: wm5100: Convert to GPIO descriptors	2023-12-08 14:31:59 +00:00
wm8903.h
wm8904.h
wm8955.h
wm8960.h
wm8962.h
wm8993.h
wm8996.h	ASoC: wm8996: Convert to GPIO descriptors	2023-12-08 14:32:00 +00:00
wm9081.h
wm9090.h
wss.h