Manage the headphone amplifier found in some Clevo laptops. Can initialize the device if headphones are not working after suspend.
There are packages for Arch Linux, Fedora and Ubuntu
To install just run:
./autogen.sh
./configure
make
make install
If systemd is available, a unit file that starts the program automatically gets installed. To enable it run:
systemctl enable init-headphone
If you are not using systemd, take a look at the etc/ folder. It includes example configuration for pm-utils and upstart to start the program automatically.
On older Linux versions you might have to add the kernel parameter
acpi_enforce_resources=lax to make the i2c driver work.
init-headphone --help
usage: init-headphone [-h] [--version] [-v] [command]
Manage the headphone amplifier found in some Clevo laptops
positional arguments:
command see the list of available commands below, init is the default
if the argument is omitted
optional arguments:
-h, --help show this help message and exit
--version show program's version number and exit
-v, --verbose increase output verbosity
available commands:
init initialize amplifier (with effect1)
effect0 no change
effect1 bass boost
effect2
effect3
effect4 boost everything
effect5
effect6
mute turn output off
unmute turn output on
recovery
- Run init-headphone with the
--verboseargument. - Use
dmesg | grep i801to check for problems with the SMBus driver. - List all i2c busses with
i2cdetect -lto find the full name of the bus SMBus I801 adapter.... Use that name as a argument for i2cdetect likei2cdetect "SMBus I801 adapter at f040". This should show the headphone amplifier at address 0x73.
The Windows driver consists of a kernel space component SvThANSP.sys and a
user space component hp.dll.
The kernel driver is simple and only supports a few commands that allow access
to I/O ports.
hp.dll uses DeviceIoControl
to communicates via the device file \\.\SvANSPDo with the driver.
It talks directly to the SMBus controller.
hp.dll exports the functions InitHeadphone(), Set_Mute(bool) and
Set_effect(int) to control the headphone amplifier which is connected to
the SMBus.
If you are interested in analyzing or running the Windows driver on Linux (with Wine) take a look at: https://github.com/Unrud/init-headphone-tools
Supported dwIoControlCodes for DeviceIoControl
lpInBuffer amd lpOutBuffer look something like:
struct {
int bus,
int device,
int func,
int pcireg,
int result,
int unused
}The driver reads a word from the register pcireg of the PCI device
specified by bus, device and func.
The result is returned in result. If the register doesn't exist, the
returned result is 0xffff. It's used to find the SMBus controller by
hp.dll.
lpInBuffer amd lpOutBuffer look something like:
struct {
int address,
int data_read,
int data_write
}The driver reads one byte from address. The result is returned in
data_read.
lpInBuffer amd lpOutBuffer are the same as above.
The driver writes one byte data_write to address.
A detailed description of the controller is available in the chipset datasheet.
The important registers are:
- Transmit Slave Address Register: Bit 0 indicates direction, the other 7 Bits are the device address (Offset: 0x4)
- Host Command Register: Command (Offset: 0x3)
- Host Data 0 Register: Data (Offset: 0x5)
This list is subject to change. If the headphone jack is not working after suspend, the model is probably supported.
x is used as wildcard
- N151SD/N155SD/N170SD/N150SC/N151SC/N155SC
- P15xSM-A/P17xSM-A Series
- P370SM-A/P375SM-A/P377SM-A Series
- P641HK1
- P65xSE
- W130SV
- W230SD
- W230SS
- W25CSV/W25CSW
- W330AU
- W330SU2
- W355SDQ
- W35xSSQ/W37xSS Series
- W510TU
- W510TU-L
- W51xLU/-C
- W5xxSU2
- W650SB/W655SB/W670SBQ/W670SBQ1 Series
- W65xSF Series
- W65xSJ Series
- W67xSFQ Series
- W67xSJQ Series
- W840AU
- W940AU/W941AU-T/W945AU/W950AU/W955AU Series
- W940TU/W945TU Series
- W942SV/W942SV1
- W942SW/W942SW1
- W945SUW
- W94xKU/W95xKU
- W94xLU/-C/W95xLU/-C/W970LU
- W94xSU1
- W94xSU2/W95xSU2/W945SUY
- W94xTU-L
- W95xKL Series
- W95xTU Series
- W970KLQ
- W970SUY
- W970TUQ
- WA50SBQ
- WA50SFQ Series
- WA50SJQ Series
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