kernel/linux.git/include/sound/hdaudio.h, branch v4.9.331

ALSA: hda - move bus_parse_capabilities to core

2016-08-09T06:53:56+00:00

HDA capability introduced recently are move to hdac core so that it can be used by legacy driver as well. Also move the capability pointers up to hdac_bus object. Signed-off-by: Vinod Koul Signed-off-by: Takashi Iwai

ALSA: hda - Fix unexpected resume through regmap code path

2016-03-08T09:49:02+00:00

HD-audio driver has a mechanism to trigger the runtime resume automatically at accessing the verbs. This auto-resume, however, causes the mutex deadlock when invoked from the regmap handler since the regmap keeps the mutex while auto-resuming. For avoiding that, there is some tricky check in the HDA regmap handler to return -EAGAIN error to back-off when the codec is powered down. Then the caller of regmap r/w will retry after properly turning on the codec power. This works in most cases, but there seems a slight race between the codec power check and the actual on-demand auto-resume trigger. This resulted in the lockdep splat, eventually leading to a real deadlock. This patch tries to address the race window by getting the runtime PM refcount at the check time using pm_runtime_get_if_in_use(). With this call, we can keep the power on only when the codec has been already turned on, and back off if not. For keeping the code consistency, the code touching the runtime PM is stored in hdac_device.c although it's used only locally in hdac_regmap.c. Reported-by: Jiri Slaby Cc: Signed-off-by: Takashi Iwai

ALSA: hda - Loop interrupt handling until really cleared

2016-02-26T07:50:31+00:00

Currently the interrupt handler of HD-audio driver assumes that no irq update is needed while processing the irq. But in reality, it has been confirmed that the HW irq is issued even during the irq handling. Since we clear the irq status at the beginning, process the interrupt, then exits from the handler, the lately issued interrupt is left untouched without being properly processed. This patch changes the interrupt handler code to loop over the check-and-process. The handler tries repeatedly as long as the IRQ status are turned on, and either stream or CORB/RIRB is handled. For checking the stream handling, snd_hdac_bus_handle_stream_irq() returns a value indicating the stream indices bits. Other than that, the change is only in the irq handler itself. Reported-by: Libin Yang Cc: Signed-off-by: Takashi Iwai

ALSA: hda - Add a common helper to give the codec modalias string

2015-10-20T08:14:59+00:00

This patch provide a new common helper function, snd_hdac_codec_modalias(), to give the codec modalias name string. This function will be used by multiple places in the later patches. Reviewed-by: Vinod Koul Tested-by: Subhransu S Prusty Signed-off-by: Takashi Iwai

ALSA: hda - Add hduadio support to DEVTABLE

2015-10-20T08:14:42+00:00

For generating modalias entries automatically, move the definition of struct hda_device_id to linux/mod_devicetable.h and add the handling of this record in file2alias helper. The new modalias is represented with combination of vendor id, device id, and api version as "hdaudio:vNrNaN". This patch itself doesn't convert the existing modaliases. Since they were added manually, this patch won't give any regression by itself at this point. [Modified the modalias format to adapt the api_version field, and drop invalid ANY_ID definition by tiwai] Signed-off-by: Subhransu S. Prusty Reviewed-by: Vinod Koul Tested-by: Subhransu S Prusty Signed-off-by: Takashi Iwai

ALSA: hda - Add api_version to hda_device_id struct

2015-10-20T08:14:17+00:00

For distinguishing the difference between HDA legacy and ext codec driver entries, we need to expose the value corresponding to type field. This patch adds a new field, api_version, to hda_device_id struct, so that this information is embedded in modalias string. Although the information is basically redundant (struct hdac_device already has type field), the helper that extracts from MODULE_DEVICE_TABLE() won't take it account except for the exported table entries themselves. So we need to put the same information in the table, too. Reviewed-by: Vinod Koul Tested-by: Subhransu S Prusty Signed-off-by: Takashi Iwai

ALSA: hda - consolidate chip rename functions

2015-10-15T12:05:28+00:00

A few multiple codec drivers do renaming the chip_name string but all these are open-coded and some of them have even no error check. Let's make common helpers to do it properly. Signed-off-by: Takashi Iwai

ALSA: hdac: Copy codec helpers to core

2015-10-08T17:09:30+00:00

The current codec helpers are local to hda code and needs to be moved to core so that other users can use it. The helpers to read/write the codec and to check the power state of widgets is copied Signed-off-by: Subhransu S. Prusty Signed-off-by: Vinod Koul Signed-off-by: Takashi Iwai

ALSA: hdac: Add snd_hdac_get_hdac_stream()

2015-08-23T07:43:27+00:00

Add a helper to find the stream using stream tag and direction. This is useful for drivers to query stream based on stream tag and direction, fox example while downloading FW thru DSP loader code Signed-off-by: Jeeja KP Signed-off-by: Vinod Koul Signed-off-by: Takashi Iwai

ALSA: hdac: add snd_hdac_refresh_widget_sysfs()

2015-08-21T10:34:50+00:00

Some codecs like Intel HDMI by default do not show up all the pins, they have to be manually enabled, so we need to refresh the codec widgets and then recreate the sysfs tree. So add new API snd_hdac_refresh_widget_sysfs() to do this. It should be be used by codec driver after sending magic verbs to codec Signed-off-by: Vinod Koul Signed-off-by: Takashi Iwai