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Input: lifebook - activate 6-byte protocol on select models 

It appears that if we turn on 6-byte Lifebook protocol on
Panasonic CF-28 its touchpad is left alone and generates
standard 3-byte PS/2 data stream with relative packets
instead of being converted in 3-byte Lifebook protocol with
absolute coordinates - in other words what get what we need
to distinguish between touchscreen and touchpad.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2007-04-12 01:36:34 -04:00
parent e7afcd1bf7
commit 1b118799cc
1 changed files with 65 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
drivers/input/mouse/lifebook.c
View File

@ -28,6 +28,14 @@ static int lifebook_set_serio_phys(struct dmi_system_id *d)
return 0;
}
static unsigned char lifebook_use_6byte_proto;
static int lifebook_set_6byte_proto(struct dmi_system_id *d)
{
lifebook_use_6byte_proto = 1;
return 0;
}
static struct dmi_system_id lifebook_dmi_table[] = {
{
.ident = "FLORA-ie 55mi",
@ -67,6 +75,14 @@ static struct dmi_system_id lifebook_dmi_table[] = {
.callback = lifebook_set_serio_phys,
.driver_data = "isa0060/serio3",
},
{
.ident = "Panasonic CF-28",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"),
},
.callback = lifebook_set_6byte_proto,
},
{
.ident = "Lifebook B142",
.matches = {
@ -78,23 +94,53 @@ static struct dmi_system_id lifebook_dmi_table[] = {
static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse)
{
unsigned char *packet = psmouse->packet;
struct input_dev *dev = psmouse->dev;
unsigned char *packet = psmouse->packet;
int relative_packet = packet[0] & 0x08;
if (psmouse->pktcnt != 3)
return PSMOUSE_GOOD_DATA;
/* calculate X and Y */
if ((packet[0] & 0x08) == 0x00) {
input_report_abs(dev, ABS_X,
(packet[1] | ((packet[0] & 0x30) << 4)));
input_report_abs(dev, ABS_Y,
1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
if (relative_packet || !lifebook_use_6byte_proto) {
if (psmouse->pktcnt != 3)
return PSMOUSE_GOOD_DATA;
} else {
switch (psmouse->pktcnt) {
case 1:
return (packet[0] & 0xf8) == 0x00 ?
PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
case 2:
return PSMOUSE_GOOD_DATA;
case 3:
return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ?
PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
case 4:
return (packet[3] & 0xf8) == 0xc0 ?
PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
case 5:
return (packet[4] & 0xc0) == (packet[2] & 0xc0) ?
PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
case 6:
if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0))
return PSMOUSE_BAD_DATA;
if ((packet[5] & 0xc0) != (packet[1] & 0xc0))
return PSMOUSE_BAD_DATA;
break; /* report data */
}
}
if (relative_packet) {
input_report_rel(dev, REL_X,
((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
input_report_rel(dev, REL_Y,
-(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
} else if (lifebook_use_6byte_proto) {
input_report_abs(dev, ABS_X,
((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f));
input_report_abs(dev, ABS_Y,
4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f)));
} else {
input_report_abs(dev, ABS_X,
(packet[1] | ((packet[0] & 0x30) << 4)));
input_report_abs(dev, ABS_Y,
1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));
}
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
@ -119,7 +165,7 @@ static int lifebook_absolute_mode(struct psmouse *psmouse)
you leave this call out the touchsreen will never send
absolute coordinates
*/
param = 0x07;
param = lifebook_use_6byte_proto ? 0x08 : 0x07;
ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
return 0;
@ -163,6 +209,7 @@ int lifebook_detect(struct psmouse *psmouse, int set_properties)
int lifebook_init(struct psmouse *psmouse)
{
struct input_dev *input_dev = psmouse->dev;
int max_coord = lifebook_use_6byte_proto ? 1024 : 4096;
if (lifebook_absolute_mode(psmouse))
return -1;
@ -171,13 +218,18 @@ int lifebook_init(struct psmouse *psmouse)
input_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
input_set_abs_params(input_dev, ABS_X, 0, 1024, 0, 0);
input_set_abs_params(input_dev, ABS_Y, 0, 1024, 0, 0);
input_set_abs_params(input_dev, ABS_X, 0, max_coord, 0, 0);
input_set_abs_params(input_dev, ABS_Y, 0, max_coord, 0, 0);
psmouse->protocol_handler = lifebook_process_byte;
psmouse->set_resolution = lifebook_set_resolution;
psmouse->disconnect = lifebook_disconnect;
psmouse->reconnect = lifebook_absolute_mode;
/*
* Use packet size = 3 even when using 6-byte protocol because
* that's what POLL will return on Lifebooks (according to spec).
*/
psmouse->pktsize = 3;
return 0;