CS8409 does not support Volume Control for NIDs 0x24 (the Headphones),
or 0x34 (The Headset Mic).
However, CS42L42 codec does support gain control for both.
We can add support for Volume Controls, by writing the the CS42L42
regmap via i2c commands, using custom info, get and put volume
functions, saved in the control.
Tested on DELL Inspiron-3500, DELL Inspiron-3501, DELL Inspiron-3500
In the case of CS8409 we do not have unsol events from NID's 0x24 and 0x34
where hs mic and hp are connected. Companion codec CS42L42 will generate
interrupt via gpio 4 to notify jack events. We have to overwrite standard
snd_hda_jack_unsol_event(), read CS42L42 jack detect status registers and
then notify status via generic snd_hda_jack_unsol_event() call.
Tested on DELL Inspiron-3500, DELL Inspiron-3501, DELL Inspiron-3505.
Dell's laptops Inspiron 3500, Inspiron 3501, Inspiron 3505 are using Cirrus Logic
CS8409 HDA bridge with CS42L42 companion codec.
The CS8409 is a multichannel HD audio routing controller.
CS8409 includes support for four channels of digital
microphone data and two bidirectional ASPs for up to 32
channels of TDM data or 4 channels of I2S data. The CS8409 is
intended to be used with a remote companion codec that implements
high performance analog functions in close physical
proximity to the end-equipment audio port or speaker driver.
The CS42L42 is a low-power audio codec with integrated MIPI
SoundWire interface or I2C/I2S/TDM interfaces designed
for portable applications. It provides a high-dynamic range,
stereo DAC for audio playback and a mono high-dynamic-range
ADC for audio capture
CS42L42 is connected to CS8409 HDA bridge via I2C and I2S.
Tested on DELL Inspiron-3500, DELL Inspiron-3501, DELL Inspiron-3505
This patch will register CS8409 with sound card and create
input/output paths and two input devices, initialise CS42L42
companion codec and configure it for ASP TX/RX TDM mode,
24bit, 48kHz.
In preparation to support Cirrus Logic CS8409 HDA bridge on new Dell platforms
it is nessasary to increase AUTO_CFG_MAX_INS and AUTO_CFG_NUM_INPUTS values.
Currently AUTO_CFG_MAX_INS is limited to 8, but Cirrus Logic HDA bridge CS8409
has 18 input pins, 16 ASP receivers and 2 DMIC inputs. We have to increase this
value to 18, so generic code can handle this correctly.
Tested on DELL Inspiron-3505, DELL Inspiron-3501, DELL Inspiron-3500
Rear audio on Lenovo ThinkStation P620 stops working after commit
1965c4364bdd ("ALSA: usb-audio: Disable autosuspend for Lenovo
ThinkStation P620"):
[ 6.013526] usbcore: registered new interface driver snd-usb-audio
[ 6.023064] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x0, type = 1
[ 6.023083] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x202, wIndex = 0x0, type = 4
[ 6.023090] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x0, type = 1
[ 6.023098] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x202, wIndex = 0x0, type = 4
[ 6.023103] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x0, type = 1
[ 6.023110] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x202, wIndex = 0x0, type = 4
[ 6.045846] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x0, type = 1
[ 6.045866] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x202, wIndex = 0x0, type = 4
[ 6.045877] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x0, type = 1
[ 6.045886] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x202, wIndex = 0x0, type = 4
[ 6.045894] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x0, type = 1
[ 6.045908] usb 3-6: cannot get ctl value: req = 0x81, wValue = 0x202, wIndex = 0x0, type = 4
I overlooked the issue because when I was working on the said commit,
only the front audio is tested. Apology for that.
Changing supports_autosuspend in driver is too late for disabling
autosuspend, because it was already used by USB probe routine, so it can
break the balance on the following code that depends on
supports_autosuspend.
Fix it by using usb_disable_autosuspend() helper, and balance the
suspend count in disconnect callback.
If the platform set the dyn_pcm_assign to true, it will call
hdmi_find_pcm_slot() to find a pcm slot when hdmi/dp monitor is
connected and need to create a pcm.
So far only intel_hsw_common_init() and patch_nvhdmi() set the
dyn_pcm_assign to true, here we let tgl platforms assign the pcm slot
dynamically first, if the driver runs for a period of time and there
is no regression reported, we could set no_fixed_assgin to true in
the intel_hsw_common_init(), and then set it to true in the
patch_nvhdmi().
