Re: [PATCH] Add model data for Dell Precision 3510 trackpad.

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On 2017-02-19 13:35, Pali Rohár wrote:
On Sunday 19 February 2017 13:16:34 John L. Preston wrote:
---
 drivers/input/mouse/alps.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 328edc8c8786..c0a4edefe54d 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -139,6 +139,7 @@ static const struct alps_model_info alps_model_data[] = {
 	{ { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff,
ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */
 	{ { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } },
+ { { 0x73, 0x03, 0x28 }, 0x13, { ALPS_PROTO_V8, 0x18, 0x18, 0 } }, /* Dell Precision 3510 */
 };

 static const struct alps_protocol_info alps_v3_protocol_data = {

Hi John! This is not a correct place do add new proto data. I already
proposed reducing this table to just for PROTO_V2, but Dmitry was not
happy about it.

Hi Pali. :)


Anyway, look at function alps_identify() where is detection for ALPS_V8:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/input/mouse/alps.c?h=v4.10-rc8#n2829

V8 is already detected when e7 is (0x73, 0x03, 0x28) and ec[1] is 0x01.
What are your ec data? Probably ec[1] is not 0x01 as otherwise it should
be already detected.

I have just found that code and am confused because that is not the same code I have running on my system. My ec[1] is 0x01 so you are correct, it should already be detected and my patch is unnecessary. Sorry for the inconvenience.


Btw, from where you got your proto data in this patch?

I pulled it from dmesg:

[john@slate ~]$ dmesg|grep "Unknown ALPS touchpad"
[ 3.071891] psmouse serio1: alps: Unknown ALPS touchpad: E7=73 03 28, EC=73 01 13

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