Re: [PATCH] Input: synaptics - add PNP IDs for Dell XPS models to forcepad

[Dmitry Torokhov]

Hi Kim,

On Fri, Jan 11, 2019 at 02:54:30PM -0600, Kim Phillips wrote:
> This patch is the result of seeing this message:
> 
> psmouse serio1: synaptics: Your touchpad (PNP: DLL087c PNP0f13) says it can support a different bus. If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@xxxxxxxxxxxxxxxx
> 
> If I set psmouse.synaptics_intertouch=1, or add the PNP ID to
> smbus_pnp_ids, the touchpad continues to work, and the above message
> goes away, but we now get:
> 
> psmouse serio1: synaptics: Trying to set up SMBus access
> psmouse serio1: synaptics: SMbus companion is not ready yet
> 
> With this patch applied, i.e., the PNP IDs are added to the forcepad
> array, the touchpad continues to work and all of the above messages
> disappear.

Are you sure the touchpad in XPSes is a forcepad (i.e. it does not have
physical button underneath it)? As far as I know there were only couple
of HP laptops with forcepads and when switching to RMI mode forcepads
need F21 handler that we do not currently have in the kernel.

> 
> Tested on a Dell XPS 15 9570.  The other IDs - for Dell XPS 13
> 9350/9360/9370 and XPS 15 9550/9560 - were obtained by searching
> for the model numbers and "says it can support a different bus".
> E.g, this is one such instance:
> 
> https://lkml.org/lkml/2018/2/15/52
> 
> Cc: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
> Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> Cc: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
> Cc: linux-input@xxxxxxxxxxxxxxx
> Signed-off-by: Kim Phillips <kim@xxxxxxxxxxxxxxx>
> ---
> With or without this patch, I'm seeing a problem where when the XPS 15
> comes out of a resume, and without even touching the touchpad, I notice
> about 600 interrupts per second firing on the "IR-IO-APIC   51-fasteoi
> SYNA2393:00" line in /proc/interrupts.  If I start using the touchpad,
> then leave it alone, I check if there are still interrupts firing, and
> they have indeed stopped.  This adversely affects my battery life when
> using an external mouse.  Any ideas on how to debug the situation?
> Could it be related to the 'vdd not found' messages?:
> 
> $ dmesg | grep -C 1 -i syna
> probe of 1-12 returned 1 after 2343 usecs
> psmouse serio1: synaptics: queried max coordinates: x [..5664], y [..4646]
> psmouse serio1: synaptics: queried min coordinates: x [1278..], y [1206..]
> psmouse serio1: synaptics: Touchpad model: 1, fw: 8.2, id: 0x1e2b1, caps: 0xf00123/0x840300/0x12e800/0x0, board id: 3125, fw id: 2378871
> input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input6
> probe of serio1 returned 1 after 939332 usecs
> --
> probe of idma64.1 returned 1 after 72 usecs
> i2c_hid i2c-SYNA2393:00: i2c-SYNA2393:00 supply vdd not found, using dummy regulator
> i2c_hid i2c-SYNA2393:00: Linked as a consumer to regulator.0
> i2c_hid i2c-SYNA2393:00: i2c-SYNA2393:00 supply vddl not found, using dummy regulator
> ath10k_pci 0000:3b:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 1a56:1535
> --
> ath10k_pci 0000:3b:00.0: firmware ver WLAN.RM.4.4.1-00079-QCARMSWPZ-1 api 6 features wowlan,ignore-otp crc32 fd869beb
> probe of i2c-SYNA2393:00 returned 1 after 23978 usecs
> ath10k_pci 0000:3b:00.0: board_file api 2 bmi_id N/A crc32 20d869c3
> --
> probe of 0018:056A:488F.0001 returned 1 after 1366 usecs
> input: SYNA2393:00 06CB:7A13 Mouse as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-10/i2c-SYNA2393:00/0018:06CB:7A13.0002/input/input23
> input: SYNA2393:00 06CB:7A13 Touchpad as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-10/i2c-SYNA2393:00/0018:06CB:7A13.0002/input/input24
> hid-generic 0018:06CB:7A13.0002: input,hidraw1: I2C HID v1.00 Mouse [SYNA2393:00 06CB:7A13] on i2c-SYNA2393:00
> probe of 0018:06CB:7A13.0002 returned 1 after 320 usecs
> --
> probe of 0018:06CB:7A13.0002 returned 0 after 5 usecs
> input: SYNA2393:00 06CB:7A13 Touchpad as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-10/i2c-SYNA2393:00/0018:06CB:7A13.0002/input/input27
> hid-multitouch 0018:06CB:7A13.0002: input,hidraw1: I2C HID v1.00 Mouse [SYNA2393:00 06CB:7A13] on i2c-SYNA2393:00
> probe of 0018:06CB:7A13.0002 returned 1 after 25104 usecs
> 
>  drivers/input/mouse/synaptics.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
> index b6da0c1267e3..e3fb4b9346c0 100644
> --- a/drivers/input/mouse/synaptics.c
> +++ b/drivers/input/mouse/synaptics.c
> @@ -185,6 +185,12 @@ static const char * const smbus_pnp_ids[] = {
>  };
>  
>  static const char * const forcepad_pnp_ids[] = {
> +	"DLL06e4", /* Dell XPS 15 9550 */
> +	"DLL0704", /* Dell XPS 13 9350 */
> +	"DLL075b", /* Dell XPS 13 9360 */
> +	"DLL07be", /* Dell XPS 15 9560 */
> +	"DLL07e6", /* Dell XPS 13 9370 */
> +	"DLL087c", /* Dell XPS 15 9570 */
>  	"SYN300D",
>  	"SYN3014",
>  	NULL
> -- 
> 2.20.1
> 

Thanks.

-- 
Dmitry