Re: [RFT] ALPS touchpad driver

[Peter Berg Larsen]

On Fri, 23 Apr 2004, Dmitry Torokhov wrote:

> I found on the net a possible way to detect ALPS driver so I made some changes
> to your driver. Unfortunately I do not have ALPS touchpad so if anyone could
> give it a spin I's appreciate it.


> +	/* Now try "E7 report". ALPS should return 0x33 in byte 1 */
> +	param[0] = 0;
> +	if (psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES) ||
> +	    psmouse_command(psmouse,  NULL, PSMOUSE_CMD_SETSCALE21) ||
> +	    psmouse_command(psmouse,  NULL, PSMOUSE_CMD_SETSCALE21) ||
> +	    psmouse_command(psmouse,  NULL, PSMOUSE_CMD_SETSCALE21))
> +		return 0;
> +
> +	param[0] = param[1] = param[2] = 0xff;
> +	if (psmouse_command(psmouse, param, PSMOUSE_CMD_GETINFO))
> +		return 0;
> +
> +	printk(KERN_INFO "alps.c: E7 report: %2.2x %2.2x %2.2x\n",
> +		param[0], param[1], param[2]);
> +
> +	return param[0] != 0x33;


Depending on ALPS version this request is also known to return one of
glidepats:
0x33,0x02,0x0a,
0x53,0x02,0x0a,
0x53,0x02,0x14,
0x63,0x02,0x0a,
0x63,0x02,0x14,
0x63,0x02,0x28,
0x63,0x02,0x3c,
0x63,0x02,0x50,
0x63,0x02,0x64,
0x73,0x02,0x0a,

glidepoints:
0x20,0x02,0x0e,
0x22,0x02,0x0a,
0x22,0x02,0x14,

Peter
--
E-Mail:       pebl@xxxxxxxxxx
Real name:    Peter Berg Larsen
Where:        Department of Computer Science, Copenhagen Uni., Denmark


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