Commit Graph

40 Commits

Author SHA1 Message Date
Mark Brown 2da1c4bf76 ASoC: wm8994: Allow debounce before MICDET identification
For systems which do not have a jack detection feature allow some debounce
to be specified before we perform accessory identification, improving
robustness without impacting button detection responsiveness.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-06-01 19:28:58 +01:00
Mark Brown 70bd3b298b ASoC: wm8994: Defer declaration of open circuit microphones
Provide a bit of debounce to handle pathological cases with slow input
better by allowing the microphone detection to run for a bit longer.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-29 20:31:33 +01:00
Mark Brown da445afe35 ASoC: wm8994: Remove duplicate revision cache
There's already a device revision stored in the core data structure,
don't duplicate it in the CODEC driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-09 12:15:35 +01:00
Mark Brown d3725761ee ASoC: wm8994: Restore AIFnCLK after reducing it for low clock rates
This helps to ensure a smooth startup when we restore.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-21 21:37:09 +01:00
Mark Brown 06f1c66324 Merge remote-tracking branch 'asoc/topic/wm8994' into asoc-next 2012-12-10 00:22:37 +09:00
Mark Brown 98869f68f2 ASoC: wm8994: Allow microphone identification callback to be overridden
Allow custom accessory identification mechanisms to make use of the MICDET
support in the device.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-03 16:35:00 +09:00
Mark Brown 63dd54521f ASoC: wm8994: Support custom accessory identification for WM1811A
Allow the user to override the accessory identification code with their
own implementation if the system provides an alternative method.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-03 16:34:12 +09:00
Mark Brown 78b76dbec8 ASoC: wm8994: Simplify button detection code
Currently the WM8994 driver allows the WM8958 microphone detection code to
be replaced in its entirety, providing a default implementation. This
doesn't actually reflect the needs of users well. They generally wish to
replace only the accessory identification parts of the algorithm (eg,
using an external GPIO to provide the equivalent of the JACKDET support in
the WM1811A).

In preparation for supporting these users better refactor the existing code
so that we have separate identification and button detection callbacks,
selecting between them rather than using the mic_detecting flag in the
existing callback. This also simplifies the code by introducing a more
explicit state machine for the detecting and button states.

In anticipation of future refactoring the callback is left in the signature
for wm8958_mic_detect(), it will be removed at a later stage.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-03 16:34:09 +09:00
Mark Brown d9dd4ada0e ASoC: wm8994: Use pdata cached in MFD driver
This is better style and facilitates implementation of device tree support
for the driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-24 00:15:08 +09:00
Mark Brown 79748cdb39 ASoC: wm8994: Only enable extra BCLK cycles when required
Rather than always assuming the maximum possible BCLK rate will be
required generate BCLKs for stereo if either one or two channels is
enabled. In order to support this we also need to ensure that only
the relevant channels are enabled.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-24 13:24:29 +01:00
Mark Brown 99af79dff5 ASoC: wm8994: Ensure we get a notification on startup for jackdet
Since jackdet only reports deltas it won't generate an interrupt on startup
when a jack is not present. This doesn't make a difference to userspace
but does mean we don't generate a notification via the internal notifier
chains. Fix that by scheduling a work to poll the chip after the clock is
enabled. Use an extremely large timeout since there's no urgency and we
don't want to report a false negative.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-03 23:03:56 +01:00
Mark Brown 8cb8e83bfa ASoC: wm_hubs: Move CODEC stored in private data into wm_hubs
Further wm_hubs code will use this.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-03 23:03:56 +01:00
Mark Brown fbfe69836c ASoC: wm8994: Implement support for self-oscillation mode in the FLL
The FLLs in the WM8994 series devices can be started without any reference
being supplied, mainly for use in analogue bypass cases. Implement support
for this mode.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-03 23:03:55 +01:00
Mark Brown e9b54de420 ASoC: wm8994: Add debounce to wm8994 mic detection
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-09 19:32:43 +01:00
Mark Brown 20dc24a951 ASoC: wm8994: Implement FLL bypass support
Later WM8994 class devices can bypass the FLL from BCLK. Do this
automatically when the FLL input and output frequencies match up.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-10 11:11:22 +01:00
Mark Brown 22f8d05535 ASoC: wm8994: Provide VMID mode control and fix default sequence
The optimal management of VMID depends on a number of factors which vary
dynamically at runtime, for example the connection to a system docking
station. In some circumstances it is desirable to keep VMID enabled all
the time, in others it is desirable to aggressively power it up and down.

Provide a callback allowing machine driver to configure either the normal
power up/down mode (WM8994_VMID_MODE_NORMAL) or to maintain VMID even
when idle (WM8994_VMID_MODE_FORCE). This callback, wm8994_vmid_mode(),
should be called with the CODEC lock.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-03-19 19:08:17 +00:00
Mark Brown 4752a88719 ASoC: wm8994: Use audio mode for jack detection when system is active
When we are out of system sleep always use audio mode for jack detection
in order to avoid potential performance issues handing off between modes.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-03-06 00:05:24 +00:00
Mark Brown 87092e3ca4 ASoC: wm8994: Bring WM8994 accessory detection up to date
Make the mechanism used for WM8994 more like that for WM1811 and WM8958:
provide the logic to distinguish between headphone and headset and hard
code the reporting of sensible SND_JACK values. Should integration with
other detection mechanisms be required we can add appropriate callbacks
(though some integrations should be able to use the subsystem ones).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-02-06 19:06:19 +00:00
Mark Brown cae59c7b21 ASoC: Remove WM8994 register cache
Now that the mfd is using the register map cache there's no need for the
CODEC driver to do any register cache management or any funny dances to
interact with the other drivers using the device so just remove the cache
initialisation and volatility information.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-13 00:20:11 +08:00
Mark Brown af6b6fe41c ASoC: Implement support for WM1811A jack detection
The WM1811A features an advanced low power accessory detection subsystem
which allows the device to be maintained in a very low power state while
the system is idle without sacrificing any accessory detection features.

Implement software support for this, automatically managing the power
configuration of the device depending on the detected accessory.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-01 14:21:55 +00:00
Mark Brown 157a75e664 ASoC: Rename WM8994 detecting flag to mic_detecting
More specific and avoids confusion with a following change.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-01 14:21:53 +00:00
Mark Brown 4585790d1c ASoC: Allow more WM8958/WM1811 button levels with default handler
The WM8958 and WM1811 support detecting a range of buttons. Allow the
user to provide platform data enabling more of these levels without
having to write a custom detection handler.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-01 14:21:51 +00:00
Mark Brown 2a8a856d42 ASoC: Don't use control_data to get struct wm8994
This will support refactoring to make use of the regmap API more directly
in the core.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-01 14:21:41 +00:00
Mark Brown b00adf76a6 ASoC: Enhance default WM8958 microphone detection
Actively manage the detection rate for microphones with WM8958, providing
improved power consumption and maximising the benefit from the hardware
debounce.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-29 20:22:00 +00:00
Mark Brown 4b7ed83aa3 ASoC: Disable WM8994 VMID for digital only paths
On WM8994 class devices only the analogue portions of the CODEC require
VMID so when running digital only paths we can leave VMID disabled.
On some earlier devices the FLL uses VMID so we don't use DAPM reference
counting alone, we maintain an internal reference count which is also
enabled and disabled by the FLL startup.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-08-14 13:44:23 +09:00
Mark Brown c7ebf932e5 ASoC: Use WM8994 FLL lock interrupt
If we have interrupts then wait for the FLL lock interrupt rather than
using dead reckoning when waiting for the FLL to start.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-07-14 00:38:22 +09:00
Mark Brown 312158718f ASoC: Add WM8958 enhanced EQ support
DSP2 in the WM8958 can be used to support an upgraded EQ for use in
demanding applications.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-03-22 18:41:28 +00:00
Mark Brown 09e10d7fe5 ASoC: Add WM8958 VSS support
With appropriate firmware the WM8958 can support Virtual Surround Sound or
VSS, widening the stereo audio image for improved user experience. Enable
support for this mode of operation when the appropriate firmware can be
loaded at runtime.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-03-22 18:41:27 +00:00
Mark Brown f20d77ce26 ASoC: Refactor WM8958 DSP to support additional algorithms
In preparation for the addition of additional WM8958 algorithms
reorganise the code to make it easier to add such support later.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-03-22 18:41:27 +00:00
Mark Brown fbbf592002 ASoC: Support download of WM8958 MBC firmware
Allow userspace to supply an update to the ROM firmware. The firmware
request is non-blocking so userspace can load the firmware at its
leisure without delaying startup, the driver will begin using the
firmware the next time MBC is started after it has been supplied.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-03-22 18:41:20 +00:00
Mark Brown f701a2e594 ASoC: Factor WM8958 DSP2 handling into separate file
DSP2 on the WM8958 has a default ROM which provides a multi-band
compressor for enhanced performance on mobile devices but can also
support runtime download of alternative firmware. In preparation for
more exploiting this functionality refactor the code to split the
handling of DSP2 into a separate file.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-03-18 10:52:40 +00:00
Mark Brown b993f92b99 ASoC: Fix section mismatch warnings in WM8994
Annoying as the __devinitdata is actually correct.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-03-08 18:56:11 +00:00
Mark Brown ca9aef5072 ASoC: Convert WM8994 to use soc-cache.c cache functions
In the process we convert the driver to read registers one at a time
when initialising the cache. This has the effect of working around
limitations in the sizes of I2C transactions which can be done by some
CPUs. Due to the sparseness of the register map the overhead from this
should be minimual unless I2C transactions are very expensive to start.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-27 10:32:14 +00:00
Mark Brown 821edd2fb5 ASoC: Add WM8958 microphone detection support
The WM8958 contains an advanced accessory detection feature which allows
detection of up to seven different impedence levels on the microphone
bias output, including detection of video outputs. Since some of the
more involved accessory interfaces may involve noticable interactions
with external components a simple detection scheme is provided by
default with the option to provide custom handling of accessory detect.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-27 10:32:13 +00:00
Mark Brown 7b306dae22 ASoC: Move WM8994 read/write access data into separate file
Makes the WM8994 driver file itself substantially smaller.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-19 11:44:41 +00:00
Liam Girdwood f0fba2ad1b ASoC: multi-component - ASoC Multi-Component Support
This patch extends the ASoC API to allow sound cards to have more than one
CODEC and more than one platform DMA controller. This is achieved by dividing
some current ASoC structures that contain both driver data and device data into
structures that only either contain device data or driver data. i.e.

 struct snd_soc_codec    --->  struct snd_soc_codec (device data)
                          +->  struct snd_soc_codec_driver (driver data)

 struct snd_soc_platform --->  struct snd_soc_platform (device data)
                          +->  struct snd_soc_platform_driver (driver data)

 struct snd_soc_dai      --->  struct snd_soc_dai (device data)
                          +->  struct snd_soc_dai_driver (driver data)

 struct snd_soc_device   --->  deleted

This now allows ASoC to be more tightly aligned with the Linux driver model and
also means that every ASoC codec, platform and (platform) DAI is a kernel
device. ASoC component private data is now stored as device private data.

The ASoC sound card struct snd_soc_card has also been updated to store lists
of it's components rather than a pointer to a codec and platform. The PCM
runtime struct soc_pcm_runtime now has pointers to all its components.

This patch adds DAPM support for ASoC multi-component and removes struct
snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec
or runtime PCM level basis rather than using snd_soc_socdev.

Other notable multi-component changes:-

 * Stream operations now de-reference less structures.
 * close_delayed work() now runs on a DAI basis rather than looping all DAIs
   in a card.
 * PM suspend()/resume() operations can now handle N CODECs and Platforms
   per sound card.
 * Added soc_bind_dai_link() to bind the component devices to the sound card.
 * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove
   DAI link components.
 * sysfs entries can now be registered per component per card.
 * snd_soc_new_pcms() functionailty rolled into dai_link_probe().
 * snd_soc_register_codec() now does all the codec list and mutex init.

This patch changes the probe() and remove() of the CODEC drivers as follows:-

 o Make CODEC driver a platform driver
 o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core.
 o Removed all static codec pointers (drivers now support > 1 codec dev)
 o snd_soc_register_pcms() now done by core.
 o snd_soc_register_dai() folded into snd_soc_register_codec().

CS4270 portions:
Acked-by: Timur Tabi <timur@freescale.com>

Some TLV320aic23 and Cirrus platform fixes.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>

TI CODEC and OMAP fixes
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>

Samsung platform and misc fixes :-
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>

MPC8610 and PPC fixes.
Signed-off-by: Timur Tabi <timur@freescale.com>

i.MX fixes and some core fixes.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

J4740 platform fixes:-
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

CC: Tony Lindgren <tony@atomide.com>
CC: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: Kevin Hilman <khilman@deeprootsystems.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
CC: Kuninori Morimoto <morimoto.kuninori@renesas.com>
CC: Daniel Gloeckner <dg@emlix.com>
CC: Manuel Lauss <mano@roarinelk.homelinux.net>
CC: Mike Frysinger <vapier.adi@gmail.com>
CC: Arnaud Patard <apatard@mandriva.com>
CC: Wan ZongShun <mcuos.com@gmail.com>

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-08-12 14:00:00 +01:00
Mark Brown 66b47fdb85 ASoC: Implement WM8994 OPCLK support
The WM8994 can output a clock derived from its internal SYSCLK, called
OPCLK.  The rate can be selected as a sysclk, with a division from the
SYSCLK rate specified (multiplied by 10 since a division of 5.5 is
supported) and the clock can be disabled by specifying a divisor of
zero.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-07-09 08:50:12 +09:00
Mark Brown 136ff2a272 ASoC: Support FLL input clock selection on WM8994
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>
2010-04-21 01:41:26 +09:00
Mark Brown 8876698406 ASoC: Implement interrupt based WM8994 microphone detection
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>
2010-04-05 19:18:12 +01:00
Mark Brown 9e6e96a197 ASoC: Add WM8994 CODEC driver
The WM8994 is a highly integrated ultra-low power hi-fi audio subsystem
designed for smartphones and other portable devices rich in multimedia
features.  It provides advanced digital mixing facilities enabling low
power high quality interconnection of CPU, baseband and other audio
sources through flexible digital and analogue routing, and integrates
a class W headphone driver and stereo class D speaker drivers.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-02-01 18:37:01 +00:00