[PATCH] Logitech PS/2++ updates

Eric Wong
2003-03-26T02:43:34Z

Updates to the PS/2++ mouse protocol used by Logitech, as well as
SMS/Smart Scroll/Cruise Control and 800 cpi resolution control for those
who want it. Up to 10 buttons are supported now, although only 8 are
used at the moment on the MX500 and MX700.

diff -bruN a/drivers/input/mouse/psmouse.c b/drivers/input/mouse/psmouse.c
--- a/drivers/input/mouse/psmouse.c 2003-03-17 13:43:47.000000000 -0800
+++ b/drivers/input/mouse/psmouse.c 2003-03-24 20:06:26.000000000 -0800
@@ -21,9 +21,17 @@
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
MODULE_DESCRIPTION("PS/2 mouse driver");
MODULE_PARM(psmouse_noext, "1i");
+MODULE_PARM(psmouse_res, "i");
+MODULE_PARM_DESC(psmouse_res, "resolution, not all mice support all values");
+MODULE_PARM(psmouse_sms, "i");
+MODULE_PARM_DESC(psmouse_sms, "autorepeat, 1 = enabled (default) | 0 = disabled");
MODULE_LICENSE("GPL");

+#define PSMOUSE_LOGITECH_SMS 1
+
static int psmouse_noext;
+static int psmouse_res;
+static int psmouse_sms = PSMOUSE_LOGITECH_SMS;

#define PSMOUSE_CMD_SETSCALE11 0x00e6
#define PSMOUSE_CMD_SETRES 0x10e8
@@ -83,8 +91,47 @@
/*
* The PS2++ protocol is a little bit complex
*/
+ if (psmouse->type == PSMOUSE_PS2PP) {
+
+ if ((packet[0] & 0x48) == 0x48 && (packet[1] & 0x02) == 0x02 ) {

- if (psmouse->type == PSMOUSE_PS2PP || psmouse->type == PSMOUSE_PS2TPP) {
+ switch (((packet[1] >> 4) & 0x0f) | (packet[0] & 0x30)) {
+
+ case 0x0d: /* Mouse extra info */
+
+ input_report_rel(dev, packet[2] & 0x80 ? REL_HWHEEL : REL_WHEEL,
+ (int) (packet[2] & 8) - (int) (packet[2] & 7));
+ input_report_key(dev, BTN_SIDE, (packet[2] >> 4) & 1);
+ input_report_key(dev, BTN_EXTRA, (packet[2] >> 5) & 1);
+
+ break;
+ case 0x0e: /* buttons 4, 5, 6, 7, 8, 9, 10 info */
+
+ input_report_key(dev, BTN_SIDE, (packet[2]) & 1);
+ input_report_key(dev, BTN_EXTRA, (packet[2] >> 1) & 1);
+ input_report_key(dev, BTN_TASK, (packet[2] >> 2) & 1);
+ input_report_key(dev, BTN_SMSUP, (packet[2] >> 3) & 1);
+ input_report_key(dev, BTN_SMSDOWN, (packet[2] >> 4) & 1);
+ input_report_key(dev, BTN_H118, (packet[2] >> 5) & 1);
+ input_report_key(dev, BTN_H119, (packet[2] >> 6) & 1);
+
+ break;
+#ifdef DEBUG
+ default:
+ printk(KERN_WARNING "psmouse.c: Received PS2++ packet #%x, but don't know how to handle.\n",
+ ((packet[1] >> 4) & 0x03) | ((packet[0] >> 2) & 0x0c));
+#endif
+
+ }
+
+ packet[0] &= 0x0f;
+ packet[1] = 0;
+ packet[2] = 0;
+
+ }
+ }
+
+ if (psmouse->type == PSMOUSE_PS2TPP) {

if ((packet[0] & 0x40) == 0x40 && abs((int)packet[1] - (((int)packet[0] & 0x10) << 4)) > 191 ) {

@@ -112,7 +159,6 @@
printk(KERN_WARNING "psmouse.c: Received PS2++ packet #%x, but don't know how to handle.\n",
((packet[1] >> 4) & 0x03) | ((packet[0] >> 2) & 0x0c));
#endif
-
}

packet[0] &= 0x0f;
@@ -385,9 +431,11 @@

int i;
static int logitech_4btn[] = { 12, 40, 41, 42, 43, 52, 73, 80, -1 };
- static int logitech_wheel[] = { 52, 53, 75, 76, 80, 81, 83, 88, -1 };
+ static int logitech_wheel[] = { 52, 53, 75, 76, 80, 81, 83, 88, 112, -1 };
static int logitech_ps2pp[] = { 12, 13, 40, 41, 42, 43, 50, 51, 52, 53, 73, 75,
- 76, 80, 81, 83, 88, 96, 97, -1 };
+ 76, 80, 81, 83, 88, 96, 97, 112, -1 };
+ static int logitech_P2[] = { 112, -1 };
+
psmouse->vendor = "Logitech";
psmouse->model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);

@@ -414,6 +462,17 @@
psmouse->name = "Wheel Mouse";
}

+ for (i = 0; logitech_P2[i] != -1; i++)
+ if (logitech_P2[i] == psmouse->model) {
+ set_bit(BTN_SIDE, psmouse->dev.keybit);
+ set_bit(BTN_EXTRA, psmouse->dev.keybit);
+ set_bit(BTN_TASK, psmouse->dev.keybit);
+ set_bit(BTN_SMSUP, psmouse->dev.keybit);
+ set_bit(BTN_SMSDOWN, psmouse->dev.keybit);
+ set_bit(BTN_H118, psmouse->dev.keybit);
+ set_bit(BTN_H119, psmouse->dev.keybit);
+ }
+
/*
* Do Logitech PS2++ / PS2T++ magic init.
*/
@@ -534,6 +593,60 @@
}

/*
+ * SMS/Smart Scroll/Cruise Control for some newer Logitech mice
+ * Defaults to enabled if we do nothing to it. Of course I put this in because
+ * I want it disabled :P
+ * 1 - enabled (if previously disabled, also default)
+ * 0/2 - disabled
+ */
+static void psmouse_logitech_sms(struct psmouse *psmouse, unsigned char *param)
+{
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
+ param[0] = 0;
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ param[0] = 3;
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ param[0] = 0;
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ param[0] = 2;
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ param[0] = 0;
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ if (psmouse_sms == 1)
+ param[0] = 1;
+ else if (psmouse_sms > 2)
+ return;
+ /* else leave param[0] == 0 to disable */
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+}
+
+/*
+ * Support 800 cpi resolution _only_ if the user wants it (there are good reasons
+ * to not use it even if the mouse supports it, and of course there are also good
+ * reasons to use it, let the user decide)
+ */
+static void psmouse_set_resolution(struct psmouse *psmouse, unsigned char *param)
+{
+ param[0] = 3;
+ if (psmouse_res >= 800) {
+ /* setting 400 cpi after doing the follwing enables 800 cpi */
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
+ psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
+ } else if (psmouse_res && psmouse_res < 200) {
+ if (psmouse_res >= 100)
+ param[0] = 2;
+ else if (psmouse_res >= 50)
+ param[0] = 1;
+ else if (psmouse_res)
+ param[0] = 0;
+ }
+ psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+}
+
+/*
* psmouse_initialize() initializes the mouse to a sane state.
*/

@@ -541,11 +654,12 @@
{
unsigned char param[2];

+ psmouse_logitech_sms(psmouse, param);
+
/*
* We set the mouse report rate to a highest possible value.
* We try 100 first in case mouse fails to set 200.
*/
-
param[0] = 100;
psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);

@@ -555,9 +669,7 @@
/*
* We also set the resolution and scaling.
*/
-
- param[0] = 3;
- psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
+ psmouse_set_resolution(psmouse, param);
psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);

/*
@@ -668,7 +780,23 @@
psmouse_noext = 1;
return 1;
}
+
+static int __init psmouse_res_setup(char *str)
+{
+ get_option(&str,&psmouse_res);
+ return 1;
+}
+
+static int __init psmouse_sms_setup(char *str)
+{
+ get_option(&str,&psmouse_sms);
+ return 1;
+}
+
__setup("psmouse_noext", psmouse_setup);
+__setup("psmouse_res=", psmouse_res_setup);
+__setup("psmouse_sms=", psmouse_sms_setup);
+
#endif

int __init psmouse_init(void)
--- a/include/linux/input.h 2003-03-17 13:44:04.000000000 -0800
+++ b/include/linux/input.h 2003-03-24 20:06:26.000000000 -0800
@@ -355,7 +355,12 @@
#define BTN_SIDE 0x113
#define BTN_EXTRA 0x114
#define BTN_FORWARD 0x115
+#define BTN_TASK 0x115
#define BTN_BACK 0x116
+#define BTN_SMSUP 0x116
+#define BTN_SMSDOWN 0x117
+#define BTN_H118 0x118
+#define BTN_H119 0x119

#define BTN_JOYSTICK 0x120
#define BTN_TRIGGER 0x120

--
Eric Wong