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path: root/sound/soc/codecs/rt5677-spi.c
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2019-11-25Merge tag 'asoc-v5.5-2' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: More updates for v5.5 Some more development work for v5.5. Highlights include: - More cleanups from Morimoto-san. - Trigger word detection for RT5677. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-11ASoC: rt5677: Load firmware via SPI using delayed workBen Zhang
The firmware rt5677_elf_vad is an ELF binary obtained from request_firmware(). Sections of the ELF are loaded to the DSP via SPI. A model (e.g. en_us.mmap) can optionally be loaded to the DSP at RT5677_MODEL_ADDR to overwrite the baked-in model in rt5677_elf_vad. Then we switch to DSP mode, load firmware, and let DSP run. When a hotword is detected, an interrupt is fired and rt5677_irq() is called. When 'DSP VAD Switch' is turned off, the codec is set back to normal mode. The kcontrol 'DSP VAD Switch' is automatically enabled/disabled when the hotwording PCM stream is opened/closed. Signed-off-by: Ben Zhang <benzh@chromium.org> Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Link: https://lore.kernel.org/r/20191106011335.223061-2-cujomalainey@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-11-09ASoC: rt5677-spi: Convert to the common vmalloc memallocTakashi Iwai
The recent change (*) in the ALSA memalloc core allows us to drop the special vmalloc-specific allocation and page handling. This patch coverts to the common code. (*) 1fe7f397cfe2: ALSA: memalloc: Add vmalloc buffer allocation support 7e8edae39fd1: ALSA: pcm: Handle special page mapping in the default mmap handler Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Curtis Malainey <cujomalainey@chromium.org> Link: https://lore.kernel.org/r/20191108094641.20086-7-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-30ASoC: rt5677-spi: fixup compile warningKuninori Morimoto
This patch fixup this warning LINUX/sound/soc/codecs/rt5677-spi.c: In function ‘rt5677_spi_pcm_close’: LINUX/sound/soc/codecs/rt5677-spi.c:114:30: warning: unused variable ‘rtd’ [-Wunused-variable] struct snd_soc_pcm_runtime *rtd = substream->private_data; ^~~ Fixes: a0e0d135427c ("ASoC: rt5677: Add a PCM device for streaming hotword via SPI") Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87a79idajh.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-25ASoC: rt5677-spi: fix sparse warningsCurtis Malainey
Fix bugs reported by kbuild test robot Fixes: a0e0d135427c ("ASoC: rt5677: Add a PCM device for streaming hotword via SPI") Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Link: https://lore.kernel.org/r/20191024184026.183913-1-cujomalainey@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-25ASoC: rt5677: Add missing null check for failed allocation of rt5677_dspColin Ian King
The allocation of rt5677_dsp can potentially fail and return null, so add a null check and return -ENOMEM on a memory allocation failure. Addresses-Coverity: ("Dereference null return") Fixes: a0e0d135427c ("ASoC: rt5677: Add a PCM device for streaming hotword via SPI") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20191024124610.18182-1-colin.king@canonical.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-22ASoC: rt5677: Add a PCM device for streaming hotword via SPIBen Zhang
This patch implements a PCM interface for streaming hotword phrases over SPI. Userspace can open the PCM device at anytime. The stream is blocked when no hotword is detected. The mic audio buffer on the DSP is a ~128KByte ring buffer that holds ~4sec of audio samples recorded from the DMIC (S16_LE, mono, 16KHz). After a hotword is detected, previous 2 seconds of audio (containing the detected hotword) is streamed first, then live capture continues until userspace closes the PCM stream. When transferring, copy one period at a time then call snd_pcm_period_elapsed(). This reduces the latency of transferring the initial ~2sec of audio after hotword detect since audio samples are available for userspace earlier. Signed-off-by: Ben Zhang <benzh@chromium.org> Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Link: https://lore.kernel.org/r/20191018200449.141123-2-cujomalainey@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-26Merge tag 'v5.2-rc6' into asoc-5.3Mark Brown
Linux 5.2-rc6
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21Merge branch 'for-5.2' of ↵Mark Brown
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.3
2019-05-20ASoC: rt5677-spi: Handle over reading when flipping bytesCurtis Malainey
There is a case when a we want to read a large number of bytes that require a burst but is not a multiple of the word size (8). When this happens rt5677_spi_reverse will run off the end of the buffer. The solution is to tell spi_reverse the actual size of the destination and stop if we reach it even if we have data left that we read. Cc: Ben Zhang <benzh@chromium.org> Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-20Merge tag 'v5.2-rc1' into asoc-5.3Mark Brown
Linux 5.2-rc1
2019-05-06ASoC: rt5677-spi: Rename driver to differentiate from main codecCurtis Malainey
Currently the SPI driver and the main codec share the same name. This will become confusing when looking up components when using both drivers. Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-06ASoC: RT5677-SPI: Disable 16Bit SPI TransfersCurtis Malainey
The current algorithm allows 3 types of transfers, 16bit, 32bit and burst. According to Realtek, 16bit transfers have a special restriction in that it is restricted to the memory region of 0x18020000 ~ 0x18021000. This region is the memory location of the I2C registers. The current algorithm does not uphold this restriction and therefore fails to complete writes. Since this has been broken for some time it likely no one is using it. Better to simply disable the 16 bit writes. This will allow users to properly load firmware over SPI without data corruption. Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Reviewed-by: Ben Zhang <benzh@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2019-04-01ASoC: rt5677-spi: Add ACPI IDOder Chiou
Add the ACPI ID for the product "chromebook pixel 2015" to match the coreboot settings. Signed-off-by: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-18ASoC: rt5677-spi: Drop unused GPIO includeLinus Walleij
This SPI driver does not use the legacy GPIO header so just delete it. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-12-15ASoC: rt5677: Remove unneeded linux/miscdevice.h includeCorentin Labbe
sound/soc/codecs/rt5677-spi.c does not use any miscdevice so this patch remove this unnecessary inclusion. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-11-16ASoC: rt5677: Remove superfluous linux/kthread.h inclusionTakashi Iwai
It's nowhere used in this driver code. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-28spi: Drop owner assignment from spi_driversAndrew F. Davis
An spi_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-25ASoC: rt5677: Allow arbitrary block read/write via SPIBen Zhang
Added rt5677_spi_read() and refactored rt5677_spi_write() so that an arbitrary block in the DSP address space can be read/written via SPI. For example, this allows us to load an ELF DSP firmware with sparse sections, and stream audio samples from DSP ring buffer. Signed-off-by: Ben Zhang <benzh@chromium.org> Acked-by: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-23ASoC: rt5677: fix rt5677 spi driver buildBen Zhang
Create a separate module for rt5677 spi driver. Without this patch, the build fails due to multiple defs of 'init_module' and 'cleanup_module'. module_spi_driver() defines its own module, so it can't be part of the rt5677 module. Signed-off-by: Ben Zhang <benzh@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20ASoC: rt5677: Support DSP function for VAD applicationOder Chiou
The ALC5677 has a programmable DSP, and there is a SPI that is dadicated for DSP firmware loading. Therefore, the patch includes a SPI driver for writing the DSP firmware. The VAD(Voice Activaty Detection) has be implemented and use the DSP to recognize the key phase. Signed-off-by: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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