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2015-12-22ALSA: oxfw: add stream format quirk for SCS.1 modelsTakashi Sakamoto
As long as I investigate SCS.1m, this model reports to transfer/receive PCM data channels/MIDI conformant data channels in tx/rx AMDTP packet. There's a contradiction that this model actually has no analog/digital capture port for PCM frames and no physical MIDI ports. I guess that SCS.1d also has the contradiction. This model has no analog/digital ports for PCM frames and no physical MIDI ports, thus it requires no streaming functionality. This commit adds some modification codes to handle the contradiction, as much as possible. Unfortunately, this module adds one PCM playback substream for SCS.1d so as SCS.1m. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: obsolete scs1x moduleTakashi Sakamoto
Now ALSA oxfw driver gains functionalities which scs1x module has. This commit obsoletes the scs1x module, and adds a line of MODULE_ALIAS to load oxfw module instead of scs1x module. In scs1x module, the name of 'shortname' field is fixed as 'SCS1x'. This field is used to name MIDI ports for both of SCS.1m and SCS.1d. This is not good because typically some SCS.1m and SCS.1d are used in the same system. It's better to distinguish them according to name of the ports. This commit applies model name in config ROM to the 'shortname'. For the name of 'driver' and 'longname', this commit uses the same way applied to the other models. This change may not bring disadvantages to users because userspace applications use ALSA rawmidi or seq interface and these interfaces are not influenced by them directly. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: add MIDI playback port for SCS.1 modelsTakashi Sakamoto
This commit adds MIDI playback ports so that scs1x driver has. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: copy handlers of asynchronous transaction for MIDI playbackTakashi Sakamoto
This commit copies some functions of asynchronous transactions for MIDI playback, to merge scs1x module. The features of payload in asynchronous transaction are the same as captured MIDI messages. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: add MIDI capture port for SCS.1 modelsTakashi Sakamoto
This commit adds MIDI capture so that scs1x driver has. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: copy handlers of asynchronous transaction for MIDI captureTakashi Sakamoto
This commit copies some functions of asynchronous transactions for MIDI capture, to merge scs1x module. The features of payload in asynchronous transaction are: * System exclusive messages for SCS.1 are encoded without ID data. In this encoding scheme, 4 bits in LSB are available. The bits are squashed in payload byte. Thus, one payload byte transfers two MIDI messages. * The first byte of payload byte means: * 0x00: depending on second payload byte * 0xf9: including escaped system exclusive messages for SCS.1, up to 3 byte (= 6 MIDI messages) * the others: including MIDI 1.0 messages * the others: including escaped system exclusive messages for SCS.1, up to 64 bytes Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: allocate own address region for SCS.1 seriesTakashi Sakamoto
When physical controls on SCS.1 models are operated, the models transfer MIDI messages in asynchronous transactions on IEEE 1394 bus. The models have a register to have an address for the transactions, and drivers can register own address for this purpose. This commit keeps a region of address, registers it and adds a handler for the transactions. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: add scs1x layerTakashi Sakamoto
Stanton Controllers and Systems 1 (SCS.1) series is supported by ALSA scs1x driver. This driver just supports MIDI functionality. On the other hand, models in this series are based on OXFW971 and ALSA OXFW driver can support them. SCS.1 series has MIDI functionality to control its surface state such as LED lighting. When operating physical knobs and faders, the models generate MIDI messages. These MIDI messages are transferred by asynchronous transactions. These transactions are really model-specific and ALSA OXFW driver requires the functionality so as scs1x module implements. This commit adds scs1x layer as a preparation to merge scs1x driver to oxfw driver. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: rename a structure so that it means backward compatibility to ↵Takashi Sakamoto
old drivers In former commits, some model-specific members are split from the structure. The structure is just to keep names for compatibility to old drivers. This commit arranges name of the structure and localize it. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: move model-specific parameters from common structureTakashi Sakamoto
In previous commit, some members are moved from 'struct snd_oxfw' because they're model-specific. There are also the other model-specific parameters in 'struct device_info'. This commit moves these members to model-specific structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: move model-specific members from common structureTakashi Sakamoto
Currently, 'struct snd_oxfw' has some members for models supported by old firewire-speakers driver, while these members are useless to the other models. This commit allocates new memory block and moves these members to model-specific structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: oxfw: enable to keep memory block for model-specific structureTakashi Sakamoto
ALSA oxfw driver should have backward compatibility to old firewire-speakers driver. Additionally, in future commit, scs1x driver will be merged. It's nice to add a pointer to have a memory block for model-specific structures. This commit adds a member to 'struct snd_oxfw' for this aim. Deallocation is done at freeing ALSA card structure. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-22ALSA: usb-audio: use list_for_each_entry_continue_reverseGeliang Tang
For better readability, use list_for_each_entry_continue_reverse() in have_dup_chmap(). Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-21ALSA: fm801: restore TEA575x state on resumeAndy Shevchenko
The suspend / resume cycle resets the settings of the FM tuner. Restore frequency settings on resume. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-21ALSA: fm801: save context before suspend devicesAndy Shevchenko
In symmetry we save context first before suspend and restore it last after resume. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-21ALSA: fm801: no need to suspend absent codecAndy Shevchenko
In case of tuner only card there is no need to take care of the codec which is anyway absent. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-21ALSA: fm801: detect FM-only card earlierAndy Shevchenko
If user does not supply tea575x_tuner parameter the driver tries to detect the tuner type. The failed codec initialization is considered as FM-only card present, however the driver still registers an IRQ handler for it. Move codec detection earlier to set tea575x_tuner parameter before check. Here the following functions are introduced reset_coded() resets AC97 codec snd_fm801_chip_multichannel_init() initializes cards with multichannel support Fixes: 5618955c4269 (ALSA: fm801: move to pcim_* and devm_* functions) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-21ALSA: fm801: propagate TUNER_ONLY bit when autodetectedAndy Shevchenko
The commit d7ba858a7f7a (ALSA: fm801: implement TEA575x tuner autodetection) brings autodetection to the driver. However the autodetection algorithm misses the TUNER_ONLY bit if it is supplied by the user. Thus, user gets weird messages and no card registered. snd_fm801 0000:0d:01.0: detected TEA575x radio type SF64-PCR snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) ... snd_fm801 0000:0d:01.0: AC'97 0 does not respond - RESET snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) snd_fm801 0000:0d:01.0: AC'97 0 access is not valid [0x0], removing mixer. snd_fm801: probe of 0000:0d:01.0 failed with error -5 Do a copy of TUNER_ONLY bit to be applied after autodetection is done. Fixes: d7ba858a7f7a (ALSA: fm801: implement TEA575x tuner autodetection) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-21Merge branch 'topic/hdmi-jack' into for-nextTakashi Iwai
2015-12-20ALSA: fm801: store struct device instead of pci_devAndy Shevchenko
There is no need to store struct pci_dev in struct fm801. Generic struct device can be easily translated to struct pci_dev whenever it's needed, in particular for one user for now. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-20ALSA: fm801: put curly braces around empty if-bodyAndy Shevchenko
The compiler complains on unused condition as follows sound/pci/fm801.c: In function ‘snd_fm801_interrupt’: sound/pci/fm801.c:585:3: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] Put the curly braces around empty body as suggested. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-20ALSA: fm801: convert rest outw() / inw() to use helpersAndy Shevchenko
The patch introduces two new helpers fm801_iowrite16() and fm801_ioread16() to write and read the registers by offset. Previously similar was done to access the hardware registers by their names. Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-20ALSA: fm801: explicitly free IRQ lineAndy Shevchenko
Otherwise we will have a warning on ->remove() since device is a PCI one. WARNING: CPU: 4 PID: 1411 at /home/andy/prj/linux/fs/proc/generic.c:575 remove_proc_entry+0x137/0x160() remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'snd_fm801' Fixes: 5618955c4269 (ALSA: fm801: move to pcim_* and devm_* functions) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-20ALSA: oss: consolidate kmalloc/memset 0 call to kzallocNicholas Mc Guire
This is an API consolidation only. The use of kmalloc + memset to 0 is equivalent to kzalloc. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-17ALSA: hda - Drop unused AZX_DCAPS_REVERSE_ASSIGNTakashi Iwai
AZX_DCAPS_REVERSE_ASSIGN is no longer referred by any code. Let's drop it. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-17ALSA: hda - Drop AZX_DCAPS_POSFIX_VIA bitTakashi Iwai
AZX_DCAPS_POSFIX_VIA is coupled always with AZX_DRIVER_VIA type, so we don't have to keep this bit in dcaps. Save one more! Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-17ALSA: hda - Raise AZX_DCAPS_RIRB_DELAY handling into top driversTakashi Iwai
AZX_DCAPS_RIRB_DELAY is dedicated only for Nvidia and its purpose is just to set a flag in bus. So it's better to be set in the toplevel driver, either hda_intel.c or hda_tegra.c, instead of the common hda_controller.c. This also allows us to strip this flag from dcaps, so save one more bit there. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-17ALSA: hda - Merge RIRB_PRE_DELAY into CTX_WORKAROUND capsTakashi Iwai
AZX_DCAPS_RIRB_PRE_DELAY is always tied with AZX_DCAPS_CTX_WORKAROUND, which is Creative's XFi specific. So, we can replace it and reduce one more bit free for DCAPS. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-16Merge branch 'topic/firewire-update' into for-nextTakashi Iwai
2015-12-15ALSA: oxfw: gather model-dependent conditions to a functionTakashi Sakamoto
Adding control elements is just for models supported by old firewire-speakers modules. The processing should be in a function to add model-dependent quirk. This commit moves the codes to the function. As a result, the function should handle error state, thus this commit also changes prototype of the function. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: oxfw: reuse driver entry to detect quirksTakashi Sakamoto
Currently, assignment to model-dependent quirk is corresponding to asynchronous transactions on IEEE 1394 bus. This is also achieved with device entry. This commit changes the processing of model-dependent quirk with the entry. As a result, the transactions are sent only for Loud models. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: oxfw: change function prototype for AV/C Audio Subunit commandTakashi Sakamoto
ALSA OXFW driver uses AV/C Audio Subunit commands to control some models. The commands get/set the state of Feature function block of the subunit. The commands are not specific to OXFW, thus there's a possibility to use them in the other drivers. Currently, helper functions for the commands require 'struct snd_oxfw', although, it's not necessarily required. It's better to change prototype of the functions without the structure for future use. This commit changes the prototype. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: oxfw: rename local functions for control elements so that they ↵Takashi Sakamoto
represent as local This commit renames local functions with prefix 'spkr_', so that they're for firewire-speakers. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: oxfw: rename a file for control elements so that it's for model-specificTakashi Sakamoto
In ALSA firewire stack, drivers basically has no control elements. This is due to the fact that each model has own functionality even if they use the same communication chipset. Implementing all of the functionalities in kernel space unreasonably increases our efforts to maintain the stack. In most case, these functionalities can be implemented in userspace via Linux fw character devices. However, ALSA OXFW driver has control elements comes from old firewire-speakers driver. Adding the elements is in a file names as 'oxfw-control.c', while the elements are really model-specific. The name is confusing because it gives an idea to handle control elements for all of OXFW-based models. This commit renames the file so that it's just for models supported by old firewire-speakers driver. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: hda - Increase default bdl_pos_adj for Baytrail/BraswellTakashi Iwai
Intel Atom processors seem to have a problem at recording when bdl_pos_adj is set to an odd value. When a value like 1 is used, it may drop the samples unexpectedly. Actually, for the old Atoms, we used to set AZX_DRIVER_SCH type, and this assigns 32 as default. Meanwhile the newer chips, Baytrail and Braswell, are set as AZX_DRIVER_PCH, and the lower default value, 1, is assigned. This patch changes the default values for these chipsets to a safer default, 32, again. Since changing the driver type (AZX_DRIVER_XXX) leads to the rename of the driver string, it would result in a possible regression. So, we can't change the type. Instead, in this patch, manual (ugly) PCI ID checks are added on top. A drawback by this increase is the slight increase of the latency, but it's a sub-ms order in normal situations, so mostly negligible. Reported-and-tested-by: Jochen Henneberg <jh@henneberg-systemdesign.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-15ALSA: hda - Clean up the code to check bdl_pos_adj optionTakashi Iwai
Just a minor cleanup; instead of passing an array, pass the assigned bdl_pos_adj option value directory in struct azx. Also split the code to get the default bdl_pos_adj value for the change that will follow after this. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-11ALSA: usb-audio: constify usb_protocol_ops structuresJulia Lawall
The usb_protocol_ops structures are never modified, so declare them as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10ALSA: hda - Move audio component accesses to hdac_i915.cTakashi Iwai
A couple of i915_audio_component ops have been added and accessed directly from patch_hdmi.c. Ideally all these should be factored out into hdac_i915.c. This patch does it, adds two new helper functions for setting N/CTS and fetching ELD bytes. One bonus is that the hackish widget vs port mapping is also moved to hdac_i915.c, so that it can be fixed / enhanced more cleanly. Reviewed-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10ALSA: hda - Use component ops for i915 HDMI/DP audio jack handlingTakashi Iwai
Since we have a new audio component ops to fetch the current ELD and state now, we can reduce the usage of unsol event of HDMI/DP pins. The unsol event isn't only unreliable, but it also needs the power up/down of the codec and link at each time, which is a significant power and time loss. In this patch, the jack creation and unsol/jack event handling are modified to use the audio component for the dedicated Intel chips. The jack handling got slightly more codes than a simple usage of hda_jack layer since we need to deal directly with snd_jack object; the hda_jack layer is basically designed for the pin sense read and unsol events, both of which aren't used any longer in our case. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10Merge tag 'drm-i915-get-eld' into topic/hdmi-jackTakashi Iwai
Merge the latest i915 audio component changes for HDMI/DP get_eld ops. This is actually used in HD-audio side in this branch.
2015-12-10ALSA: hda - Fix superfluous HDMI jack repollTakashi Iwai
The recent commit [e90247f9fcee: ALSA: hda - Split ELD update code from hdmi_present_sense()] rewrote the HDMI jack handling code, but a slight behavior change sneaked in unexpectedly. When the jack isn't connected, it tries repoll unnecessarily. This patch addresses the flaw, to the right behavior as before. Fixes: e90247f9fcee ('ALSA: hda - Split ELD update code from hdmi_present_sense()') Reported-and-tested-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10drm/i915: Add reverse mapping between port and intel_encoderTakashi Iwai
This patch adds a reverse mapping from a digital port number to intel_encoder object containing the corresponding intel_digital_port. It simplifies the query of the encoder a lot. Note that, even if it's a valid digital port, the dig_port_map[] might point still to NULL -- usually it implies a DP MST port. Due to this fact, the NULL check in each place has no WARN_ON() and just skips the port. Once when the situation changes in future, we might introduce WARN_ON() for a more strict check. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10drm/i915: Add get_eld audio componentTakashi Iwai
Implement a new i915_audio_component_ops, get_eld(). It's called by the audio driver to fetch the current audio status and ELD of the given HDMI/DP port. It returns the size of expected ELD bytes if it's valid, zero if no valid ELD is found, or a negative error code. The current state of audio on/off is stored in the given pointer, too. Note that the returned size isn't limited to the given max bytes. If the size is greater than the max bytes, it means that only a part of ELD has been copied back. For achieving this implementation, a new field audio_connector is added to struct intel_digital_port. It points to the connector assigned to the given digital port. It's set/reset at each audio enable/disable call in intel_audio.c, and protected with av_mutex. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10ALSA: hda - Allow i915 binding later in codec driverTakashi Iwai
Due to the recent change, HDA controller driver for Intel PCH tries to bind i915 audio component always at the probe time no matter whether HDMI/DP codec is found. This is, however, superflulous for old chipsets (e.g. on IVB) where they don't have always the HDMI/DP codecs but often have only a discrete GPU instead. For the newer chipsets, we need already the i915 binding from the beginning due to power well control. Meanwhile, for older chipsets where we don't need power well, we don't need the i915 binding at the controller level. This patch removes again the i915 binding in the HDA controller driver for old Intel PCHs, but adds the binding in HDMI/DP codec driver instead. This allows still the use of the direct notification from the graphics driver while we can avoid the unnecessary load of i915 driver for machines only with another GPU. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-10ALSA: hda - Optimize audio component check in patch_hdmi.cTakashi Iwai
The audio component is enabled only when CONFIG_SND_HDA_I915 is set. Give a dummy macro for allowing the compiler optimize out the relevant codes when this Kconfig isn't set. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-09sound/oss: remove VIRT_TO_BUS dependencyArnd Bergmann
The OSS sound drivers used to rely on virt_to_bus(), but don't any more, so we can remove the Kconfig dependency. As a lot of architectures don't provide VIRT_TO_BUS any more, removing the dependency in sounds/oss/ would make the deprecated drivers appear there, which we probably don't want. Instead I'm replacing the simple dependency with 'VIRT_TO_BUS || RPC || NETWINDER' so we can still build these sound drivers for the platforms that need them, but don't change anything on other architectures. As a follow-up, we can remove the virt_to_bus() implementation and Kconfig symbol in the ARM architecture. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-09ALSA: hda - Don't try to bind i915 unless CONFIG_SND_HDA_I915 is setTakashi Iwai
snd-hda-intel driver tries to bind with i915 audio component always when AZX_DCAPS_I915_POWERWELL is set in the driver caps. This was mostly OK in the past, as the flag was applied only to a limited set of devices, namely, Haswell and Broadwell. On these machines, i915 graphics is almost mandatory as long as HDMI/DP is concerned. Recently the application of i915 binding was widened to more Intel chips. On these chips, the chance of a kernel without i915 graphics is much higher, and such user would hit an error like: snd_hda_intel 0000:00:1b.0: failed to add i915 component master (-19) Although the error itself is harmless, it's certainly superfluous even to try binding with i915, if we already know that there isn't any. This patch fixes it by simply defining AZX_DCAPS_I915_POWERWELL as 0 in the case without i915. Then all codes referring to this flag will be optimized out by the compiler. Fixes: 6603249dcdbb ('ALSA: hda - Enable audio component for old Intel PCH devices') Reported-by: kernel test robot <ying.huang@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-09ALSA: hda - Less grumbling about lack of i915 bindingTakashi Iwai
The recent commit [6603249dcdbb: ALSA: hda - Enable audio component for old Intel PCH devices] enabled the i915 binding for HDMI/DP on old Intel PCHs. But many boards are without HDMI/DP, and they actually don't need i915 binding, and yet the driver has a check of i915 binding and complains like Haswell must be built with CONFIG_SND_HDA_I915 This error is false-positive, and it should be put only for HSW/BDW, instead of all devices that may be bound with i915. This patch fixes the condition to check, as well as rephrasing the message specific to HSW/BDW HDMI/DP. Fixes: 6603249dcdbb ('ALSA: hda - Enable audio component for old Intel PCH devices') Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-08ALSA: hda - Implement loopback control switch for Realtek and other codecsTakashi Iwai
Many codecs, typically found on Realtek codecs, have the analog loopback path merged to the secondary input of the middle of the output paths. Currently, we don't offer the dynamic switching in such configuration but let each loopback path mute by itself. This should work well in theory, but in reality, we often see that such a dead loopback path causes some background noises even if all the elements get muted. Such a problem has been fixed by adding the quirk accordingly to disable aamix, and it's the right fix, per se. The only problem is that it's not so trivial to achieve it; user needs to pass a hint string via patch module option or sysfs. This patch gives a bit improvement on the situation: it adds "Loopback Mixing" control element for such codecs like other codecs (e.g. IDT or VIA codecs) with the individual loopback paths. User can turn on/off the loopback path simply via a mixer app. For keeping the compatibility, the loopback is still enabled on these codecs. But user can try to turn it off if experiencing a suspicious background or click noise on the fly, then build a static fixup later once after the problem is addressed. Other than the addition of the loopback enable/disablement control, there should be no changes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-12-08ALSA: hda - Make snd_hda_parse_nid_path() localTakashi Iwai
An exported function snd_hda_parse_nid_path() is used only inside hda_generic.c. Let's make it a static local function for a better code optimization. Signed-off-by: Takashi Iwai <tiwai@suse.de>