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| | * ASoC: tlv320dac33: Manage a pointer for snd_pcm_substream in private structurePeter Ujfalusi2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As a preparation for supporting codec to be turned off, when we are in BIAS_STANDBY. The substream must be easily available in other places than pcm_* callbacks. Manage a pointer in _startup, and _shutdown for this. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: Revised module loading, and DAC33 ID readPeter Ujfalusi2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimize the way how tlv320dac33 is powered uppon module and soc initialization. Also read the DAC33 ID registers, and update the reg_cache to reflect it. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: Optimize power up, and restorePeter Ujfalusi2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On power up we only need to initialize the codec, and restore only registers, which are not in either in DAPM nor in the playback start sequence. These are mostly gain related registers. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: TWL4030: Remove OUTL/R outputsPeter Ujfalusi2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | OUTL/R are leftovers from the original driver, and they are no longer needed. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: TWL4030: AIF/APLL fix in DAPM domainPeter Ujfalusi2010-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch orders the APLL and AIF power sequence in case of HiFi (audio in TWL4030 terms) playback/capture. We also need to make sure that the AIF is running during playback/capture, when there is no valid DAPM route available. For this purpose I introduce these virtual widgets: /* To have complete playback route all the time */ DAPM_OUTPUT("Virtual HiFi OUT") /* Will keep AIF/APLL enabled */ /* To have complete capture route all the time */ DAPM_INPUT("Virtual HiFi IN") /* Will keep AIF/APLL enabled */ /* To have complete playback route for the voice module */ DAPM_OUTPUT("Virtual Voice OUT") /* Will keep APLL enabled */ The DAPM_SUPPLY widgets for APLL and AIF are placed in a way, that during any audio activity the needed configuration of AIF and APLL will be enabled (playback, capture, analog loopback, digital loopback, and voice activity). The apll reference counting code has been lifted, and modified from Liam Girdwood's earlier patch. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33 - disable regulators at i2c remove()Liam Girdwood2010-04-28
| | | | | | | | | | | | | | | | | | Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | ASoC: Add WM9090 amplifier driverMark Brown2010-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The WM9090 is a high performance low power audio subsystem, including headphone and class D speaker drivers. Note that this driver is a standalone CODEC driver and so is only immediately suitable for use with the WM9090 as a standalone sound card taking line inputs, or with a DAC with no software control. The pending ASoC multi-CODEC support will expand the range of systems that can use the driver, or system-specific adaptations can be made. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | ASoC: Remove redundant WM8960 SYSCLKSEL clkdiv optionMark Brown2010-04-28
| |/ | | | | | | | | | | | | The SYSCLK source is automatically managed when configuring the PLL. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * Merge branch 'for-2.6.35' of ↵Takashi Iwai2010-04-27
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lrg/asoc-2.6 into topic/asoc
| | * ASoC: tlv320aic3x: Add basic regulator supportJarkko Nikula2010-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the TLV320AIC3x supplies and enables all of them for the entire lifetime of the device. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320aic3x: Change bias management semanticsJarkko Nikula2010-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move PLL enable from BIAS_ON state to BIAS_PREPARE to be pair with BIAS_STANDBY where PLL is disabled. Remove also old comments about power control. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320aic3x: Remove needless power off from aic3x_set_bias_levelJarkko Nikula2010-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These ADC, DAC and output pin power off commands are needless in aic3x_set_bias_level since they are not enabled in aic3x_init and they are defined in aic3x_dapm_widgets so the ASoC DAPM will take care of them anyway. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320aic3x: Remove unused version stringJarkko Nikula2010-04-27
| | | | | | | | | | | | | | | | | | Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: FIFO caused delay reportingPeter Ujfalusi2010-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delay reporting for the three implemented DAC33 FIFO modes. DAC33 has FIFO depth status register(s), but it can not be used, since inside of pcm_pointer we can not send I2C commands. Timestamp based estimation need to be used. The method of calculating the delay depends on the active FIFO mode. Bypass mode: FIFO is bypassed, report 0 as delay Mode1: nSample fill mode. In this mode I need to use two timestamp ts1: taken when the interrupt has been received ts2: taken before writing to nSample register. Interrupts are coming when DAC33 FIFO depth goes under alarm threshold. Phase1: when we received the alarm threshold, but our workqueue has not been executed (safeguard phase). Just count the played out samples since ts1 and subtract it from the alarm threshold value. Phase2: During nSample burst (after writing to nSample register), count the played out samples since ts1, count the samples received since ts2 (in a burst). Estimate the FIFO depth using these and alarm threshold value. Phase3: Draining phase (after the burst read), count the played out samples since ts1. Estimate the FIFO depth using the nSample configuration and the alarm threshold value. Mode7: Threshold based fill mode. In this mode one timestamp is enough. ts1: taken when the interrupt has been received Interrupts are coming when DAC33 FIFO depth reaches upper threshold. Phase1: Draining phase (after the burst), counting the played out samples since ts1, and subtract it from the upper threshold value. Phase2: During burst operation. Using the pre calculated time needed to play out samples from the buffer during the drain period (from upper to lower threshold), move the time window to cover the estimated time from the burst start to the current time. Calculate the samples played out since lower threshold and also the samples received during the same time. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: Calculate the interface speed during burstsPeter Ujfalusi2010-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the DAC33 FIFO is in use the dai interface is running in much higher speed than the sampling frequency. Calculate the rate based on the internal base frequency and the bclk divider. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: Change magic numbers used in Mode7Peter Ujfalusi2010-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | Upper and Lower threshold values are used as magic numbers. Replace them with defines for later use. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: Skip calculations in FIFO Bypass modePeter Ujfalusi2010-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no need for calculations for FIFO bypass mode. Just in case set the nsample maximum limit, which has been done in the calculation phase. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| | * ASoC: tlv320dac33: Fix for early interrupt in FIFO Mode1Peter Ujfalusi2010-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Alarm threshold interrupt is triggered right after the playback start. This interrupt is recieved during the first burst period, and caused the state machine to write additional nSample command, which has to be avoided. To fix this issue move the DAC33 interrupt unmasking after we configured the PREFILL register with a small delay. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | ASoC: UDA134X: Add UDA1345 CODEC supportVladimir Zapolskiy2010-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for Philips UDA1345 CODEC. The CODEC has only volume control, de-emphasis, mute, DC filtering and power control features. Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | ASoC: Warn on low WM8994 AIFCLKMark Brown2010-04-26
| | | | | | | | | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | ASoC: Correct inversion of speaker mixer PCM switchMark Brown2010-04-26
| | | | | | | | | | | | | | | | | | Reported-by: Anti Sullin <anti.sullin@artecdesign.ee> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | ASoC: ad193x: fix typo, delete redundant spaceBarry Song2010-04-23
| | | | | | | | | | | | | | | | | | Signed-off-by: Barry Song <21cnbao@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | ASoC: ad193x: fix wrong register setting in ad193x_set_dai_fmtBarry Song2010-04-23
| |/ | | | | | | | | | | Signed-off-by: Barry Song <21cnbao@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * ASoC: Allow unspecified source when stopping WM8994 FLLsMark Brown2010-04-21
| | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * ASoC: Tone down debugging for WM8994 class WMark Brown2010-04-20
| | | | | | | | | | | | It's a little verbose during path changes. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * ASoC: Set full range of WM8994 FLL Fratio valuesMark Brown2010-04-20
| | | | | | | | | | | | | | | | Use all the available Fratio values when configuring the WM8994 FLL, not just 0 and 3, following more complete characterisation of the device performance. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * ASoC: Support FLL input clock selection on WM8994Mark Brown2010-04-20
| | | | | | | | | | | | | | | | The WM8994 FLL can be clocked from one of four inputs, the two MCLKs and the LRCLK and BCLK of the AIF associated with the FLL. Allow all four inputs to be used rather than defaulting to MCLK1. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * ASoC: da7210: Fencepost error in reg cache readPhil Carmody2010-04-20
| | | | | | | | | | | | | | | | | | An index equal to the array size may not be accessed. Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * ASoC: missing conversions to snd_soc_codec_*_drvdata()Takashi Iwai2010-04-20
| | | | | | | | | | | | | | Conversions to snd_soc_codec_{get|set}_drvdata() were missing in some files in the previous commit. Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ASoC: Add indirection for CODEC private dataMark Brown2010-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the features of the multi CODEC work is that it embeds a struct device in the CODEC to provide diagnostics via a sysfs class rather than via the device tree, at which point it's much better to use the struct device private data rather than having two places to store it. Provide an accessor function to allow this change to be made more easily, and update all the CODEC drivers are updated. To ensure use of the accessor the private data structure member is renamed, meaning that if code developed with older an older core that still uses private_data is merged it will fail to build. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * Merge branch 'for-2.6.34' into for-2.6.35Mark Brown2010-04-16
| |\
| * | ASoC: Use SNDRV_PCM_RATE_8000_96000 macro for WM8731Bill Gatliff2010-04-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Bill Gatliff <bgat@billgatliff.com> Acked-by: Richard Purdie <rpurdie@rpsys.net> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | ASoC: WM8750: Convert to new APIMarek Vasut2010-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Register the WM8750 as a SPI or I2C device. This patch mostly shuffles code around. Hugely inspired by WM8753 which was already converted. Also, this patch fixes the Jive and Spitz machine. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | Merge branch 'for-2.6.34' into for-2.6.35Mark Brown2010-04-05
| |\ \ | | | | | | | | | | | | | | | | Conflicts due to context changes next to the backported DMA data change: include/sound/soc.h
| * | | ASoC: Implement interrupt based WM8994 microphone detectionMark Brown2010-04-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support interrupt based microphone bias detection. The WM8994 has two microphone bias supplies, with detection supported on both. Detection using GPIOs together with the standard GPIO based jack framework is already supported via the platform data for the WM8994 core driver. Note that as well as the microphone bias itself the system clock and whichever AIF clock is supplying the system clock will need to be enabled for detection to function. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | Merge branch 'for-2.6.34' into for-2.6.35Mark Brown2010-03-29
| |\ \ \
| * | | | ASoC: ad193x: move codec register/unregister to bus probe/removeBarry Song2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The way i've factored out the bus probe and removal functions so that there's no code in the individual I2C and SPI functions means that the register() and unregister() functions could just be squashed into the bus_probe() and bus_remove() functions. Signed-off-by: Barry Song <21cnbao@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | ASoC: update gfp/slab.h includesTejun Heo2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implicit slab.h inclusion via percpu.h is about to go away. Make sure gfp.h or slab.h is included as necessary. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | ASoC: Fix file permission of soc/codecs/twl6040.cTakashi Iwai2010-03-29
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | ASoC: TWL6040: use of kzalloc/kfree requires the include of slab.hStephen Rothwell2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | ASoC: update for removeal of slab.h from percpu.hStephen Rothwell2010-03-29
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | ASoC: ak4642: Add enhanced sampling rateKuninori Morimoto2010-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | ASoC: ak4642: Add set_fmt function for snd_soc_dai_opsKuninori Morimoto2010-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | ASoC: ak4642: Add pll select supportKuninori Morimoto2010-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current ak4642 was not able to select pll. This patch add support it. It still expect PLL base input pin is MCKI. see Table 5 "setting of PLL Mode" of datasheet Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | ASoC: Implement WM8994 DAI tristate supportMark Brown2010-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This also adds the first DAI operation for AIF3 so fill out the ID and the ops for that too. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | | | Merge branch 'for-2.6.34' into for-2.6.35Mark Brown2010-03-22
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| * | | | | ASoC: Allow WM8903 mic detect disable and don't force bias onMark Brown2010-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't force enable the microphone bias on WM8903 when doing jack detection, and don't force enable microphone bias. This allows platforms to only enable microphone detection when a jack has been inserted. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | | | | ASoC: Allow disabling of WM835x jack detectionMark Brown2010-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If no report is specified then disable detection. Note that we don't disable the slow clock, though the power consumption from it should be negligable. That should be reference counted, ideally through DAPM. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | | | | ASoC: Move WM8350 microphone detection bias managment out of driverMark Brown2010-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow machines to control exactly when the bias is turned on and off. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
| * | | | | ASoC: TWL4030: PM fix for output amplifiersPeter Ujfalusi2010-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Gain controls on outputs affect the power consumption when the gain is set to non 0 value. Outputs with amps have one register to configure the routing and the gain: PREDL_CTL (0x25): bit 0: Voice enable bit 1: Audio L1 enable bit 2: Audio L2 enable bit 3: Audio R2 enable bit 4-5: Gain (0x0 - power down, 0x1 - 6dB, 0x2 - 0dB, 0x3 - -6dB) bit 0 - 3: is handled in DAPM domain (DAPM_MIXER) bit 4 - 5: has simple volume control If there is no audio activity (BIAS_STANDBY), and user changes the volume, than the output amplifier will be enabled. If the user changes the routing (but the codec remains in BIAS_STANDBY), than the cached gain value also be written to the register, which enables the amplifier. The existing workaround for this is to have virtual PGAs associated with the outputs, and whit DAPM PMD the gain on the output will be forced to 0 (off) by bypassing the regcache. This failed to disable the amplifiers in several scenario (as mentioned above). Also if the codec is in BIAS_ON state, and user modifies a volume control, which path is actually not enabled, than that amplifier will be enabled as well, but it will be not turned off, since there is no DAPM path, which would make mute it. To prevent amps being enabled, when they are not needed, introduce the following workaround: Track the state of each of this type of output. In twl4030_write only allow actual write, when the given output is enabled, otherwise only update the reg_cache. The PGA event handlers on power up will write the cached value to the chip (restoring gain, routing selection). On power down 0 is written to the register (disabling the amp, and also just in case clearing the routing). Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-18 10:39:59 -0400