On Wed, 2021-07-21 at 21:31 +0200, Hans Schultz wrote: > Hi Dmitry, > > On Wed, 2021-07-21 at 12:14 -0700, Dmitry Torokhov wrote: > > On Wed, Jul 21, 2021 at 11:09 AM Hans Schultz < > > hans.schultz@xxxxxxxxxxx> wrote: > > > > > > On Wed, 2021-07-21 at 10:48 -0700, Dmitry Torokhov wrote: > > > > Hi Hans, > > > > > > > > On Sun, May 30, 2021 at 2:12 AM Hans Schultz < > > > > hans.schultz@xxxxxxxxxxx> wrote: > > > > > > > > > > Hello, > > > > > I have a problem getting my Elantech touchpad to work with > > > > > the > > > > > mainline > > > > > kernels, and I need some assistance with the code to resolve > > > > > the > > > > > problem. > > > > > The kernels that have tried are 5.9.11 and 5.11.11. > > > > > > > > > > With boot parameters i8042.notimeout i8042.nomux, the > > > > > touchpad is > > > > > detected but does not work. There is absolutely no response > > > > > from > > > > > it > > > > > with any hid modules loaded. > > > > > > > > > > It is reported and seen working on a Lubuntu distro (bionic > > > > > kernel) > > > > > when inserting the i2c_hid module. The insertion of the > > > > > i2c_hid > > > > > module > > > > > pulls in the hid_multitouch module when it works, no boot > > > > > parameters > > > > > necessary. > > > > > In the case where it does not work, insering the i2c_hid > > > > > module > > > > > does > > > > > not pull in the hid_multitouch module. > > > > > > > > > > I have the bionic kernel code, but I have not as of yet been > > > > > able > > > > > to > > > > > detect what makes it work in contrast to the kernel.org > > > > > kernels. > > > > > > > > > > This I think should lead to a kernel patch. > > > > > > > > There is not much to go on with. What is the hardware, your > > > > kernel > > > > .config, dmesg from unsuccessful boot? If you have logs from > > > > the > > > > working kernel that would help too. > > > > > > > > Thanks. > > > > > > > > > > The best info I have on the hardware is from Xorg log with the > > > working > > > Lubuntu kernel: > > > [ 130.980] (II) Loading > > > /usr/lib/xorg/modules/input/synaptics_drv.so > > > [ 130.982] (II) Module synaptics: vendor="X.Org Foundation" > > > [ 130.982] (II) Using input driver 'synaptics' for '0X45 0X4C > > > 0X41 > > > 0:00 > > > 04F3:308C Touchpad' > > > > > > I might be able to get the kernel messages when inserting the > > > working > > > module, but I think it will not tell much more. > > > > OK, if you say so. Then the only suggestion I have is to verify > > that > > your kernel config enables all necessary options for your hardware. > > I'd double check if you have Designware I2C controller enabled, > > ACPI > > LPSS, etc. > > > > > To me it is clearly a code issue as the working kernel pulls in > > > hid_multitouch when inserting i2c_hid, while the non-working does > > > not. > > > > > > All kernels I have tried up to now from kernel.org do not work. > > > The > > > latest being 5.13.4. > > > > Thanks. > > > > I have a thread with all the dmesg info for both the working and non- > working cases here : > https://gitlab.freedesktop.org/libinput/libinput/-/issues/544 > > Benjamin has also asked for the acpidump info, which is there. (funny > as the responses to my problem come at the same time after a long > time. > :-) ) > > I will check my .config... > > Thanks, > Hans Here are my I2C kernel settings. I only added what I could see as with Intel hw, so no Designware! # # I2C support # CONFIG_I2C=y CONFIG_ACPI_I2C_OPREGION=y CONFIG_I2C_BOARDINFO=y CONFIG_I2C_COMPAT=y CONFIG_I2C_CHARDEV=y CONFIG_I2C_MUX=m # # Multiplexer I2C Chip support # CONFIG_I2C_MUX_GPIO=m CONFIG_I2C_MUX_LTC4306=m CONFIG_I2C_MUX_PCA9541=m CONFIG_I2C_MUX_PCA954x=m CONFIG_I2C_MUX_REG=m CONFIG_I2C_MUX_MLXCPLD=m # end of Multiplexer I2C Chip support CONFIG_I2C_HELPER_AUTO=y CONFIG_I2C_SMBUS=m CONFIG_I2C_ALGOBIT=y # # I2C Hardware Bus support # # # PC SMBus host controller drivers # # CONFIG_I2C_ALI1535 is not set # CONFIG_I2C_ALI1563 is not set # CONFIG_I2C_ALI15X3 is not set # CONFIG_I2C_AMD756 is not set # CONFIG_I2C_AMD8111 is not set # CONFIG_I2C_AMD_MP2 is not set CONFIG_I2C_I801=m CONFIG_I2C_ISCH=m CONFIG_I2C_ISMT=m CONFIG_I2C_PIIX4=m # CONFIG_I2C_NFORCE2 is not set # CONFIG_I2C_NVIDIA_GPU is not set # CONFIG_I2C_SIS5595 is not set # CONFIG_I2C_SIS630 is not set # CONFIG_I2C_SIS96X is not set # CONFIG_I2C_VIA is not set # CONFIG_I2C_VIAPRO is not set # # ACPI drivers # # CONFIG_I2C_SCMI is not set # # I2C system bus drivers (mostly embedded / system-on-chip) # # CONFIG_I2C_CBUS_GPIO is not set # CONFIG_I2C_DESIGNWARE_PLATFORM is not set # CONFIG_I2C_DESIGNWARE_PCI is not set # CONFIG_I2C_EMEV2 is not set # CONFIG_I2C_GPIO is not set # CONFIG_I2C_OCORES is not set # CONFIG_I2C_PCA_PLATFORM is not set # CONFIG_I2C_SIMTEC is not set # CONFIG_I2C_XILINX is not set # # External I2C/SMBus adapter drivers # # CONFIG_I2C_DIOLAN_U2C is not set # CONFIG_I2C_CP2615 is not set # CONFIG_I2C_ROBOTFUZZ_OSIF is not set # CONFIG_I2C_TAOS_EVM is not set # CONFIG_I2C_TINY_USB is not set # # Other I2C/SMBus bus drivers # # CONFIG_I2C_MLXCPLD is not set # end of I2C Hardware Bus support # CONFIG_I2C_STUB is not set # CONFIG_I2C_SLAVE is not set # CONFIG_I2C_DEBUG_CORE is not set # CONFIG_I2C_DEBUG_ALGO is not set # CONFIG_I2C_DEBUG_BUS is not set # end of I2C support
