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2012-08-06ASoC: wm8903: Use module_i2c_driverSachin Kamat1-17/+1
module_i2c_driver makes the code simpler by eliminating module_init and module_exit calls. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-12ASoC: wm8903: Move register default changes to I2C probeMark Brown1-32/+31
Also convert to use update_bits() while we're at it. No great need to do this, it's just a bit neater to do as much as possible in the I2C probe. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2012-06-12ASoC: wm8903: Move interrupt request to I2C probeMark Brown1-34/+31
There's no reason to defer requesting of the interrupt until the CODEC probe and doing so results in more work if we hit an error as we'll have registered the CODEC with the core. It's neater to acquire as many of the resources we'll need as we can in the bus probe function. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2012-06-12ASoC: wm8903: Make interrupt handler use regmap directlyMark Brown1-16/+32
There's no urgent need for the interrupt handler to use the ASoC I/O functions and it'll support a further move in where we request the interrupt so call the regmap APIs directly. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2012-06-12ASoC: wm8903: Move pin configuration into I2C probe() functionMark Brown1-45/+47
Ensure that the device pins are configured as soon as possible by moving the pin configration (including MICBIAS) into the I2C probe() function. This had been done in the CODEC probe() function when we were relying on the ASoC register I/O code. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2012-06-09ASoC: wm8903: Convert to devm_regmap_init_i2c()Mark Brown1-3/+1
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-03ASoC: codecs: Refresh copyrights for Wolfson driversMark Brown1-1/+1
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-03ASoC: wm8903: init GPIOs during I2C probe not codec probeStephen Warren1-26/+22
This allows the GPIOs to be available as soon as the I2C device has probed, which in turn enables machine drivers to request the GPIOs in their probe(), rather than deferring this to their ASoC machine init function, i.e. after the whole sound card has been constructed, and hence the WM8903 codec is available. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-04ASoC: codecs: Remove rtd->codec usage from CODEC driversMark Brown1-2/+1
In order to support CODEC<->CODEC links remove the assumption that there is only a single CODEC on a DAI link by removing the use of the CODEC pointer in the rtd from the CODEC drivers. They are already being passed their DAI whenever they are passed an rtd and can get the CODEC from there. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-02ASoC: Fix return value of wm8903_gpio_direction_in() and wm8903_gpio_direction_out()Axel Lin1-4/+14
We can't just pass back the return value of snd_soc_update_bits() as it will be 1 if a bit changed rather than zero. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-07ASoC: WM8903: Add of_match_tableStephen Warren1-0/+7
This allows the device to be matched against the device tree using the compatible flag directly, as is standard, rather than falling back to matching .id_table against the non-vendor portion of the first compatible property value. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-06ASoC: Don't fail if we can't read the IRQ type in WM8903Mark Brown1-5/+1
If we fail to read the IRQ type from the interrupt controller don't fail, just assume a value and solider on - we may fail later when we try to request the IRQ but it's possible we'll succeed. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-06ASoC: WM8903: Add device tree bindingStephen Warren1-0/+49
Document the device tree binding for the WM8903 codec, and modify the driver to extract platform data from the device tree, if present. Based on work by John Bonesio, but significantly reworked since then. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-06ASoC: WM8903: Get default irq_active_low from IRQ controllerStephen Warren1-0/+40
If the WM8903 is hooked up to an interrupt, set the irq_active_low flag in the default platform data based on the IRQ's IRQ_TYPE. Map IRQ_TYPE_NONE (a lack of explicit configuration/restriction) to irq_active_low = false; the previous default. This code is mainly added to support device tree interrupt bindings, although will work perfectly well in a non device tree system too. Any interrupt controller that supports only a single IRQ_TYPE could set each IRQ's type based on that restriction. This applies equally with and without device tree. To cater for interrupt controllers that don't do this, for which irqd_get_trigger_type() will return IRQ_TYPE_NONE, the platform data irq_active_low field may be used in systems that don't use device tree. With device tree, every IRQ must have some IRQ_TYPE set. Controllers that support DT and multiple IRQ_TYPEs must define the interrupts property (as used in interrupt source nodes) such that it defines the IRQ_TYPE to use. When the core DT setup code initializes wm8903->irq, the interrupts property will be parsed, and as a side- effect, set the IRQ's IRQ_TYPE for the WM8903 probe() function to read. Controllers that support DT and a single IRQ_TYPE could arrange to set the IRQ_TYPE somehow during their initialization, or hard-code it during the processing of the child interrupts property. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-06ASoC: WM8903: Remove conditionals checking pdata != NULLStephen Warren1-38/+36
The pdata pointer is now always valid. Remove any conditions that check its validity. This patch is mostly just removing an indentation level. One variable had to be moved due to the removal of a scope, and one comment was split into two. Viewing the patch with git show/diff -b will show that it's actually very small. Note that WM8903_MIC_BIAS_CONTROL_0 is now written unconditionally, whereas it used to be written only if pdata was supplied. Since defpdata.micdet_cfg = 0, this unconditional write simply echos the HW defaults in the case where pdata is not supplied. Based on work by John Bonesio, but significantly reworked since then. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-06ASoC: WM8903: Fix platform data gpio_cfg confusionStephen Warren1-1/+2
wm8903_platform_data.gpio_cfg[] was intended to be interpreted as follows: 0: Don't touch this GPIO's configuration register 1..7fff: Write that value to the GPIO's configuration register 8000: Write zero to the GPIO's configuration register other: Undefined (invalid) The rationale is that platform data is usually global data, and a value of zero means that the field wasn't explicitly set to anything (e.g. because the field was new to the pdata type, and existing users weren't update to initialize it) and hence the value zero should be ignored. 0x8000 is an explicit way to get 0 in the register. The code worked this way until commit 7cfe561 "ASoC: wm8903: Expose GPIOs through gpiolib", where the behaviour was changed due to my lack of awareness of the above rationale. This patch reverts to the intended behaviour, and updates all in-tree users to use the correct scheme. This also makes WM8903 consistent with other devices that use a similar scheme. WM8903_GPIO_NO_CONFIG is also renamed to WM8903_GPIO_CONFIG_ZERO so that its name accurately reflects its purpose. Signed-off-by: Stephen Warren <swarren@nvidia.com> Cc: Olof Johansson <olof@lixom.net> Cc: Colin Cross <ccross@android.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-03ASoC: WM8903: Create default platform data structureStephen Warren1-2/+17
When no platform data is supplied, point pdata at a default platform structure. This enables two future changes: a) Defines the default platform data values in a single place. b) There is always a valid pdata pointer, so some conditional code can be simplified by a later patch. Based on work by John Bonesio, but significantly reworked since then. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-03ASoC: Move initial WM8903 identification and reset to I2C probeMark Brown1-18/+23
Get control of the device earlier and avoid trying to do an ASoC probe on a card that won't work. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-03ASoC: Convert WM8903 to direct regmap API usageMark Brown1-182/+196
Converting to an rbtree cache as regcache doesn't have a flat cache. Since the top of the register map is fairly sparse this should be an overall win. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-03ASoC: Don't resync WM8903 register cache on resetMark Brown1-2/+0
We only do this on initial power on so it's at best a waste of time as the core will have already defaulted to the same values. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-03ASoC: Use a normal cache sync for WM8903Mark Brown1-15/+3
The driver used to use a complicated method to sync the register cache after having brought the bias level up to standby in resume due to the use of the write sequencer to manage the initial power up. Now that we don't use the write sequencer there is no need for this and we can just use snd_soc_cache_sync() directly. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-03ASoC: WM8903 only supports I2C so don't ifdef itMark Brown1-6/+0
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-03ASoC: Use table based control init for WM8903Mark Brown1-3/+2
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-03ASoC: Convert WM8903 to devm_kzalloc()Mark Brown1-4/+3
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2011-12-02ASoC: WM8903: Disallow all invalid gpio_cfg pdata valuesStephen Warren1-2/+2
The GPIO registers are 15 bits wide. Hence values, higher than 0x7fff are not legal GPIO register values. Modify the pdata.gpio_cfg handling code to reject all illegal values, not just WM8903_GPIO_NO_CONFIG (0x8000). This will allow the later use of 0xffffffff as an invalid value in future device tree bindings, meaning "don't touch this GPIO's configuration". Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-02ASoC: Drop unused state parameter from CODEC suspend callbackLars-Peter Clausen1-1/+1
The existence of this parameter is purely historical. None of the CODEC drivers uses it and we always pass in the same value anyway, so it should be safe to remove it. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-28ASoC: Convert WM8903 MICBIAS to a supply widgetMark Brown1-2/+2
Also rename it to MICBIAS to reflect the pin name and help any out of tree users notice the change. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Stephen Warren <swarren@nvidia.com>
2011-11-27ASoC: Remove unneeded platform_device.h inclusions from CODECsMark Brown1-1/+0
They've not been needed for a long time if they were ever required. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-23ASoC: Constify snd_soc_dai_ops structsLars-Peter Clausen1-1/+1
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure") introduced the possibility to have constant DAI ops structures, yet this is barley used in both existing drivers and also new drivers being submitted, although none of them modifies its DAI ops structure. The later is not surprising since existing drivers are often used as templates for new drivers. So this patch just constifies all existing snd_soc_dai_ops structs to eliminate the issue altogether. The patch was generated with the following coccinelle semantic patch: // <smpl> @@ identifier ops; @@ -struct snd_soc_dai_ops ops = +const struct snd_soc_dai_ops ops = { ... }; // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-08-09ASoC: WM8903: Free IRQ on device removalStephen Warren1-0/+5
Without this, request_irq on subsequent device initialization fails, and the codec cannot be used. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-05-16ASoC: Fix wrong data type access in a few codec driversJarkko Nikula1-1/+2
Commit fafd217 ("ASoC: Store a list of widgets in a DAPM mux/mixer kcontrol") changed the control private data type that is passed to snd_soc_cnew when creating dapm mixer and mux controls. Commit did not update a few codec drivers that are using their own put callbacks and thus are accessing a wrong data type. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-05-10Merge branch 'for-2.6.39' into for-2.6.40Mark Brown1-1/+1
2011-05-10ASoC: WM8903: Fix Digital Capture Volume rangeStephen Warren1-1/+1
Increase the range of the Digital Capture Volume control to be 120 steps. Each step is 0.75dB, and the range starts at -72dB, giving a max setting of 18dB, which matches the latest datasheet, to the precision of the step size. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-04-20ASoC: WM8903: Implement DMIC supportStephen Warren1-2/+21
In addition to the currently supported analog capture path, the WM8903 also supports digital mics. The analog and digital capture paths are exclusive; a mux is present to select the capture source. Logically, the mux exists to select the decimator's input, from either the ADC or DMIC block outputs. However, the ADC power domain also includes the DMIC interface. Consequently, this change represents the mux as existing immediately before the ADC, and selecting between the Input PGA and DMIC block outputs. An alternative might be to represent the mux in its correct location, and associate the ADC power enable controls with both the real ADC, and a fake ADC for the DMIC? Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-04-08Merge branch 'for-2.6.39' into for-2.6.40Mark Brown1-15/+23
2011-04-08ASoC: WM8903: HP and Line out PGA/mixer DAPM fixesDilan Lee1-15/+23
Update the headphone and line out mixers and PGAs use the same logical set of register bits and sequencing as the speaker mixer/PGA. This allows ALSA controls for mute and volume on headphone and line out to operate correctly. Per conversation on alsa-devel, earlier datasheets indicated that the POWER_MANAGEMENT_* register bits 0 and 1 were aliases to ANALOG_* register bits 0 and 4, and hence only one copy of those bits was programmed. However, later datasheets corrected this. From: Dilan Lee <dilee@nvidia.com> [swarren: Applied same change to headphone widgets] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-03-30ASoC: Convert WM8903 to table based DAPM setupMark Brown1-13/+5
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2011-02-13Merge branch 'for-2.6.38' into for-2.6.39Mark Brown1-1/+1
2011-02-13ASoC: Warn if WM8903 platform data is used to enable microphone IRQMark Brown1-0/+22
The WM8903 interrupts are clear on read so if the WM8903 detection is enabled from platform data when the IRQ is in use (rather than using a direct signal from a GPIO) status may be lost during startup. Help users spot this misconfiguration by adding a WARN_ON(). Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-13ASoC: WM8903: Fix mic detection enable logicStephen Warren1-1/+1
The mic detection HW should be enabled when either mic or short detection is required, not when only both are required. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org
2011-02-11ASoC: Use explicit sequence for WM8903 bias offMark Brown1-45/+21
This makes no real difference compared to the write sequencer sequence that was previously used but can run without a clock being provided. Also remove the write sequencer support code as this was the last use of it. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-11ASoC: Don't use write sequencer to power up WM8903Mark Brown1-19/+54
The write sequencer sequencer sequence takes longer than is desirable as it brings up a full playback path which is not required at this point. Open coding the sequence cuts the startup time by two thirds. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-11ASoC: Convert WM8903 bias management to use snd_soc_update_bits()Mark Brown1-10/+7
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-10ASoC: Actively manage WM8903 DC servo configurationMark Brown1-4/+119
Explicitly cache the DC servo offsets for digital paths in the driver, allowing them to be preserved over suspend and resume, and ensure that we recalibrate analogue outputs paths when they are in use so that we cover any changes in the input offset. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-09ASoC: Fix WM8903 DAC mute defaultMark Brown1-3/+3
The WM8903 register map does not mute the DAC by default at startup so we need to explicitly do so. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-09ASoC: Dynamically manage CLK_SYS in WM8903Mark Brown1-3/+12
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-09ASoC: Convert WM8903 to use PGA_S for output stage enablesMark Brown1-120/+60
This simplfies the code and slightly reduces the startup time. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-09ASoC: Add support for AIF channel muxing on WM8903Mark Brown1-4/+62
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-09ASoC: Display WM8903 chip revision alphabeticallyMark Brown1-2/+2
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2011-02-09ASoC: Remove redundant -codec from WM8903 driver nameMark Brown1-1/+1
It causes noisy -codecs to appear in things like .codec_name. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
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