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path: root/drivers/input/mouse/synaptics.c
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Diffstat (limited to 'drivers/input/mouse/synaptics.c')
-rw-r--r--drivers/input/mouse/synaptics.c129
1 files changed, 122 insertions, 7 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 2e300a460556..da392c22fc6c 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -25,7 +25,7 @@
#include <linux/module.h>
#include <linux/dmi.h>
-#include <linux/input.h>
+#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/slab.h>
@@ -279,6 +279,25 @@ static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
synaptics_mode_cmd(psmouse, priv->mode);
}
+static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
+{
+ static unsigned char param = 0xc8;
+ struct synaptics_data *priv = psmouse->private;
+
+ if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
+ return 0;
+
+ if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
+ return -1;
+ if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
+ return -1;
+
+ /* Advanced gesture mode also sends multi finger data */
+ priv->capabilities |= BIT(1);
+
+ return 0;
+}
+
/*****************************************************************************
* Synaptics pass-through PS/2 port support
****************************************************************************/
@@ -380,7 +399,9 @@ static void synaptics_pt_create(struct psmouse *psmouse)
* Functions to interpret the absolute mode packets
****************************************************************************/
-static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
+static int synaptics_parse_hw_state(const unsigned char buf[],
+ struct synaptics_data *priv,
+ struct synaptics_hw_state *hw)
{
memset(hw, 0, sizeof(struct synaptics_hw_state));
@@ -397,6 +418,14 @@ static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data
((buf[0] & 0x04) >> 1) |
((buf[3] & 0x04) >> 2));
+ if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) {
+ /* Gesture packet: (x, y, z) at half resolution */
+ priv->mt.x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
+ priv->mt.y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
+ priv->mt.z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
+ return 1;
+ }
+
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
@@ -452,6 +481,36 @@ static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
}
+
+ return 0;
+}
+
+static void set_slot(struct input_dev *dev, int slot, bool active, int x, int y)
+{
+ input_mt_slot(dev, slot);
+ input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
+ if (active) {
+ input_report_abs(dev, ABS_MT_POSITION_X, x);
+ input_report_abs(dev, ABS_MT_POSITION_Y,
+ YMAX_NOMINAL + YMIN_NOMINAL - y);
+ }
+}
+
+static void synaptics_report_semi_mt_data(struct input_dev *dev,
+ const struct synaptics_hw_state *a,
+ const struct synaptics_hw_state *b,
+ int num_fingers)
+{
+ if (num_fingers >= 2) {
+ set_slot(dev, 0, true, min(a->x, b->x), min(a->y, b->y));
+ set_slot(dev, 1, true, max(a->x, b->x), max(a->y, b->y));
+ } else if (num_fingers == 1) {
+ set_slot(dev, 0, true, a->x, a->y);
+ set_slot(dev, 1, false, 0, 0);
+ } else {
+ set_slot(dev, 0, false, 0, 0);
+ set_slot(dev, 1, false, 0, 0);
+ }
}
/*
@@ -466,7 +525,8 @@ static void synaptics_process_packet(struct psmouse *psmouse)
int finger_width;
int i;
- synaptics_parse_hw_state(psmouse->packet, priv, &hw);
+ if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
+ return;
if (hw.scroll) {
priv->scroll += hw.scroll;
@@ -488,7 +548,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
return;
}
- if (hw.z > 0) {
+ if (hw.z > 0 && hw.x > 1) {
num_fingers = 1;
finger_width = 5;
if (SYN_CAP_EXTENDED(priv->capabilities)) {
@@ -512,6 +572,9 @@ static void synaptics_process_packet(struct psmouse *psmouse)
finger_width = 0;
}
+ if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
+ synaptics_report_semi_mt_data(dev, &hw, &priv->mt, num_fingers);
+
/* Post events
* BTN_TOUCH has to be first as mousedev relies on it when doing
* absolute -> relative conversion
@@ -519,7 +582,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
- if (hw.z > 0) {
+ if (num_fingers > 0) {
input_report_abs(dev, ABS_X, hw.x);
input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
}
@@ -622,6 +685,8 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
{
int i;
+ __set_bit(INPUT_PROP_POINTER, dev->propbit);
+
__set_bit(EV_ABS, dev->evbit);
input_set_abs_params(dev, ABS_X,
XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
@@ -629,6 +694,15 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0);
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
+ if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
+ __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
+ input_mt_init_slots(dev, 2);
+ input_set_abs_params(dev, ABS_MT_POSITION_X, XMIN_NOMINAL,
+ priv->x_max ?: XMAX_NOMINAL, 0, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_Y, YMIN_NOMINAL,
+ priv->y_max ?: YMAX_NOMINAL, 0, 0);
+ }
+
if (SYN_CAP_PALMDETECT(priv->capabilities))
input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
@@ -663,6 +737,7 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
input_abs_set_res(dev, ABS_Y, priv->y_res);
if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
+ __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
/* Clickpads report only left button */
__clear_bit(BTN_RIGHT, dev->keybit);
__clear_bit(BTN_MIDDLE, dev->keybit);
@@ -702,6 +777,11 @@ static int synaptics_reconnect(struct psmouse *psmouse)
return -1;
}
+ if (synaptics_set_advanced_gesture_mode(psmouse)) {
+ printk(KERN_ERR "Advanced gesture mode reconnect failed.\n");
+ return -1;
+ }
+
return 0;
}
@@ -744,15 +824,45 @@ static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
#endif
};
+static bool broken_olpc_ec;
+
+static const struct dmi_system_id __initconst olpc_dmi_table[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
+ {
+ /* OLPC XO-1 or XO-1.5 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
+ },
+ },
+ { }
+#endif
+};
+
void __init synaptics_module_init(void)
{
impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
+ broken_olpc_ec = dmi_check_system(olpc_dmi_table);
}
int synaptics_init(struct psmouse *psmouse)
{
struct synaptics_data *priv;
+ /*
+ * The OLPC XO has issues with Synaptics' absolute mode; similarly to
+ * the HGPK, it quickly degrades and the hardware becomes jumpy and
+ * overly sensitive. Not only that, but the constant packet spew
+ * (even at a lowered 40pps rate) overloads the EC such that key
+ * presses on the keyboard are missed. Given all of that, don't
+ * even attempt to use Synaptics mode. Relative mode seems to work
+ * just fine.
+ */
+ if (broken_olpc_ec) {
+ printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
+ return -ENODEV;
+ }
+
psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
if (!priv)
return -ENOMEM;
@@ -769,6 +879,11 @@ int synaptics_init(struct psmouse *psmouse)
goto init_fail;
}
+ if (synaptics_set_advanced_gesture_mode(psmouse)) {
+ printk(KERN_ERR "Advanced gesture mode init failed.\n");
+ goto init_fail;
+ }
+
priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
@@ -802,8 +917,8 @@ int synaptics_init(struct psmouse *psmouse)
/*
* Toshiba's KBC seems to have trouble handling data from
- * Synaptics as full rate, switch to lower rate which is roughly
- * thye same as rate of standard PS/2 mouse.
+ * Synaptics at full rate. Switch to a lower rate (roughly
+ * the same rate as a standard PS/2 mouse).
*/
if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 11:55:12 +0100