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SubjectPATCH: Support Synaptics TouchPad old-style absolute packet format
From
Date
Hi!

This patch adds support for the old-style absolute packet format used
by some old versions of the touchpad. The patch applies on top of the
previous synaptics patches. The whole patch series is also available
here:

http://w1.894.telia.com/~u89404340/patches/touchpad/2.6.0-test2/v1/


linux-petero/drivers/input/mouse/synaptics.c | 174 +++++++++++++++------------
1 files changed, 100 insertions(+), 74 deletions(-)

diff -puN drivers/input/mouse/synaptics.c~synaptics-old-proto drivers/input/mouse/synaptics.c
--- linux/drivers/input/mouse/synaptics.c~synaptics-old-proto Tue Jul 29 23:22:26 2003
+++ linux-petero/drivers/input/mouse/synaptics.c Tue Jul 29 23:22:26 2003
@@ -394,20 +394,6 @@ void synaptics_disconnect(struct psmouse

static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
{
- hw->x = (((buf[3] & 0x10) << 8) |
- ((buf[1] & 0x0f) << 8) |
- buf[4]);
- hw->y = (((buf[3] & 0x20) << 7) |
- ((buf[1] & 0xf0) << 4) |
- buf[5]);
-
- hw->z = buf[2];
- hw->w = (((buf[0] & 0x30) >> 2) |
- ((buf[0] & 0x04) >> 1) |
- ((buf[3] & 0x04) >> 2));
-
- hw->left = (buf[0] & 0x01) ? 1 : 0;
- hw->right = (buf[0] & 0x02) ? 1 : 0;
hw->up = 0;
hw->down = 0;
hw->b0 = 0;
@@ -418,32 +404,58 @@ static void synaptics_parse_hw_state(uns
hw->b5 = 0;
hw->b6 = 0;
hw->b7 = 0;
- if (SYN_CAP_EXTENDED(priv->capabilities) &&
- (SYN_CAP_FOUR_BUTTON(priv->capabilities))) {
- hw->up = ((buf[3] & 0x01)) ? 1 : 0;
- if (hw->left)
- hw->up = !hw->up;
- hw->down = ((buf[3] & 0x02)) ? 1 : 0;
- if (hw->right)
- hw->down = !hw->down;
- }
- if (buf[3] == 0xC2 && SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)) {
- switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
- default:
- ; /* we did comment while initialising... */
- case 8:
- hw->b7 = ((buf[5] & 0x08)) ? 1 : 0;
- hw->b6 = ((buf[4] & 0x08)) ? 1 : 0;
- case 6:
- hw->b5 = ((buf[5] & 0x04)) ? 1 : 0;
- hw->b4 = ((buf[4] & 0x04)) ? 1 : 0;
- case 4:
- hw->b3 = ((buf[5] & 0x02)) ? 1 : 0;
- hw->b2 = ((buf[4] & 0x02)) ? 1 : 0;
- case 2:
- hw->b1 = ((buf[5] & 0x01)) ? 1 : 0;
- hw->b0 = ((buf[4] & 0x01)) ? 1 : 0;
+
+ if (SYN_MODEL_NEWABS(priv->model_id)) {
+ hw->x = (((buf[3] & 0x10) << 8) |
+ ((buf[1] & 0x0f) << 8) |
+ buf[4]);
+ hw->y = (((buf[3] & 0x20) << 7) |
+ ((buf[1] & 0xf0) << 4) |
+ buf[5]);
+
+ hw->z = buf[2];
+ hw->w = (((buf[0] & 0x30) >> 2) |
+ ((buf[0] & 0x04) >> 1) |
+ ((buf[3] & 0x04) >> 2));
+
+ hw->left = (buf[0] & 0x01) ? 1 : 0;
+ hw->right = (buf[0] & 0x02) ? 1 : 0;
+ if (SYN_CAP_EXTENDED(priv->capabilities) &&
+ (SYN_CAP_FOUR_BUTTON(priv->capabilities))) {
+ hw->up = ((buf[3] & 0x01)) ? 1 : 0;
+ if (hw->left)
+ hw->up = !hw->up;
+ hw->down = ((buf[3] & 0x02)) ? 1 : 0;
+ if (hw->right)
+ hw->down = !hw->down;
+ }
+ if (buf[3] == 0xC2 && SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)) {
+ switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
+ default:
+ ; /* we did comment while initialising... */
+ case 8:
+ hw->b7 = ((buf[5] & 0x08)) ? 1 : 0;
+ hw->b6 = ((buf[4] & 0x08)) ? 1 : 0;
+ case 6:
+ hw->b5 = ((buf[5] & 0x04)) ? 1 : 0;
+ hw->b4 = ((buf[4] & 0x04)) ? 1 : 0;
+ case 4:
+ hw->b3 = ((buf[5] & 0x02)) ? 1 : 0;
+ hw->b2 = ((buf[4] & 0x02)) ? 1 : 0;
+ case 2:
+ hw->b1 = ((buf[5] & 0x01)) ? 1 : 0;
+ hw->b0 = ((buf[4] & 0x01)) ? 1 : 0;
+ }
}
+ } else {
+ hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
+ hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
+
+ hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
+ hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
+
+ hw->left = (buf[0] & 0x01) ? 1 : 0;
+ hw->right = (buf[0] & 0x02) ? 1 : 0;
}
}

@@ -522,44 +534,58 @@ void synaptics_process_byte(struct psmou
struct input_dev *dev = &psmouse->dev;
struct synaptics_data *priv = psmouse->private;
unsigned char data = psmouse->packet[psmouse->pktcnt - 1];
+ int newabs = SYN_MODEL_NEWABS(priv->model_id);

input_regs(dev, regs);

- /* check first byte */
- if (psmouse->pktcnt == 1 && (data & 0xC8) != 0x80) {
- printk(KERN_WARNING "Synaptics driver lost sync at 1st byte\n");
- priv->out_of_sync++;
- psmouse->pktcnt = 0;
- if (psmouse_resetafter > 0 && priv->out_of_sync == psmouse_resetafter) {
- psmouse->state = PSMOUSE_IGNORE;
- serio_rescan(psmouse->serio);
- }
- return;
- }
-
- /* check 4th byte */
- if (psmouse->pktcnt == 4 && (data & 0xC8) != 0xC0) {
- printk(KERN_WARNING "Synaptics driver lost sync at 4th byte\n");
- priv->out_of_sync++;
- psmouse->pktcnt = 0;
- if (psmouse_resetafter > 0 && priv->out_of_sync == psmouse_resetafter) {
- psmouse->state = PSMOUSE_IGNORE;
- serio_rescan(psmouse->serio);
- }
- return;
- }
-
- if (psmouse->pktcnt >= 6) { /* Full packet received */
- if (priv->out_of_sync) {
- priv->out_of_sync = 0;
- printk(KERN_NOTICE "Synaptics driver resynced.\n");
- }
-
- if (priv->ptport && synaptics_is_pt_packet(psmouse->packet))
- synaptics_pass_pt_packet(priv->ptport, psmouse->packet);
- else
- synaptics_process_packet(psmouse);
+ switch (psmouse->pktcnt) {
+ case 1:
+ if (newabs ? ((data & 0xC8) != 0x80) : ((data & 0xC0) != 0xC0)) {
+ printk(KERN_WARNING "Synaptics driver lost sync at 1st byte\n");
+ goto bad_sync;
+ }
+ break;
+ case 2:
+ if (!newabs && ((data & 0x60) != 0x00)) {
+ printk(KERN_WARNING "Synaptics driver lost sync at 2nd byte\n");
+ goto bad_sync;
+ }
+ break;
+ case 4:
+ if (newabs ? ((data & 0xC8) != 0xC0) : ((data & 0xC0) != 0x80)) {
+ printk(KERN_WARNING "Synaptics driver lost sync at 4th byte\n");
+ goto bad_sync;
+ }
+ break;
+ case 5:
+ if (!newabs && ((data & 0x60) != 0x00)) {
+ printk(KERN_WARNING "Synaptics driver lost sync at 5th byte\n");
+ goto bad_sync;
+ }
+ break;
+ default:
+ if (psmouse->pktcnt >= 6) { /* Full packet received */
+ if (priv->out_of_sync) {
+ priv->out_of_sync = 0;
+ printk(KERN_NOTICE "Synaptics driver resynced.\n");
+ }

- psmouse->pktcnt = 0;
+ if (priv->ptport && synaptics_is_pt_packet(psmouse->packet))
+ synaptics_pass_pt_packet(priv->ptport, psmouse->packet);
+ else
+ synaptics_process_packet(psmouse);
+
+ psmouse->pktcnt = 0;
+ }
+ break;
+ }
+ return;
+
+ bad_sync:
+ priv->out_of_sync++;
+ psmouse->pktcnt = 0;
+ if (psmouse_resetafter > 0 && priv->out_of_sync == psmouse_resetafter) {
+ psmouse->state = PSMOUSE_IGNORE;
+ serio_rescan(psmouse->serio);
}
}
_

--
Peter Osterlund - petero2@telia.com
http://w1.894.telia.com/~u89404340
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