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Diffstat (limited to 'drivers/input/mouse/alps.c')
-rw-r--r--drivers/input/mouse/alps.c185
1 files changed, 115 insertions, 70 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index bf2fa51853e..7b99fc7c943 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -29,6 +29,9 @@
*/
#define ALPS_CMD_NIBBLE_10 0x01f2
+#define ALPS_REG_BASE_RUSHMORE 0xc2c0
+#define ALPS_REG_BASE_PINNACLE 0x0000
+
static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
{ PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
{ PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
@@ -1166,26 +1169,31 @@ static int alps_hw_init_v1_v2(struct psmouse *psmouse)
}
/*
- * Enable or disable passthrough mode to the trackstick. Must be in
- * command mode when calling this function.
+ * Enable or disable passthrough mode to the trackstick.
*/
-static int alps_passthrough_mode_v3(struct psmouse *psmouse, bool enable)
+static int alps_passthrough_mode_v3(struct psmouse *psmouse,
+ int reg_base, bool enable)
{
- int reg_val;
+ int reg_val, ret = -1;
- reg_val = alps_command_mode_read_reg(psmouse, 0x0008);
- if (reg_val == -1)
+ if (alps_enter_command_mode(psmouse, NULL))
return -1;
+ reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
+ if (reg_val == -1)
+ goto error;
+
if (enable)
reg_val |= 0x01;
else
reg_val &= ~0x01;
- if (__alps_command_mode_write_reg(psmouse, reg_val))
- return -1;
+ ret = __alps_command_mode_write_reg(psmouse, reg_val);
- return 0;
+error:
+ if (alps_exit_command_mode(psmouse))
+ ret = -1;
+ return ret;
}
/* Must be in command mode when calling this function */
@@ -1204,69 +1212,102 @@ static int alps_absolute_mode_v3(struct psmouse *psmouse)
return 0;
}
-static int alps_hw_init_v3(struct psmouse *psmouse)
+static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
{
- struct ps2dev *ps2dev = &psmouse->ps2dev;
- int reg_val;
- unsigned char param[4];
+ int ret = -EIO, reg_val;
if (alps_enter_command_mode(psmouse, NULL))
goto error;
- /* Check for trackstick */
- reg_val = alps_command_mode_read_reg(psmouse, 0x0008);
+ reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
if (reg_val == -1)
goto error;
- if (reg_val & 0x80) {
- if (alps_passthrough_mode_v3(psmouse, true))
- goto error;
- if (alps_exit_command_mode(psmouse))
- goto error;
+
+ /* bit 7: trackstick is present */
+ ret = reg_val & 0x80 ? 0 : -ENODEV;
+
+error:
+ alps_exit_command_mode(psmouse);
+ return ret;
+}
+
+static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ int ret = 0;
+ unsigned char param[4];
+
+ if (alps_passthrough_mode_v3(psmouse, reg_base, true))
+ return -EIO;
+
+ /*
+ * E7 report for the trackstick
+ *
+ * There have been reports of failures to seem to trace back
+ * to the above trackstick check failing. When these occur
+ * this E7 report fails, so when that happens we continue
+ * with the assumption that there isn't a trackstick after
+ * all.
+ */
+ if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
+ psmouse_warn(psmouse, "trackstick E7 report failed\n");
+ ret = -ENODEV;
+ } else {
+ psmouse_dbg(psmouse,
+ "trackstick E7 report: %2.2x %2.2x %2.2x\n",
+ param[0], param[1], param[2]);
/*
- * E7 report for the trackstick
- *
- * There have been reports of failures to seem to trace back
- * to the above trackstick check failing. When these occur
- * this E7 report fails, so when that happens we continue
- * with the assumption that there isn't a trackstick after
- * all.
+ * Not sure what this does, but it is absolutely
+ * essential. Without it, the touchpad does not
+ * work at all and the trackstick just emits normal
+ * PS/2 packets.
*/
- param[0] = 0x64;
- if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
- ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
- ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
- ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
- psmouse_warn(psmouse, "trackstick E7 report failed\n");
- } else {
- psmouse_dbg(psmouse,
- "trackstick E7 report: %2.2x %2.2x %2.2x\n",
- param[0], param[1], param[2]);
-
- /*
- * Not sure what this does, but it is absolutely
- * essential. Without it, the touchpad does not
- * work at all and the trackstick just emits normal
- * PS/2 packets.
- */
- if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
- ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
- ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
- alps_command_mode_send_nibble(psmouse, 0x9) ||
- alps_command_mode_send_nibble(psmouse, 0x4)) {
- psmouse_err(psmouse,
- "Error sending magic E6 sequence\n");
- goto error_passthrough;
- }
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
+ alps_command_mode_send_nibble(psmouse, 0x9) ||
+ alps_command_mode_send_nibble(psmouse, 0x4)) {
+ psmouse_err(psmouse,
+ "Error sending magic E6 sequence\n");
+ ret = -EIO;
+ goto error;
}
- if (alps_enter_command_mode(psmouse, NULL))
- goto error_passthrough;
- if (alps_passthrough_mode_v3(psmouse, false))
- goto error;
+ /*
+ * This ensures the trackstick packets are in the format
+ * supported by this driver. If bit 1 isn't set the packet
+ * format is different.
+ */
+ if (alps_enter_command_mode(psmouse, NULL) ||
+ alps_command_mode_write_reg(psmouse,
+ reg_base + 0x08, 0x82) ||
+ alps_exit_command_mode(psmouse))
+ ret = -EIO;
}
- if (alps_absolute_mode_v3(psmouse)) {
+error:
+ if (alps_passthrough_mode_v3(psmouse, reg_base, false))
+ ret = -EIO;
+
+ return ret;
+}
+
+static int alps_hw_init_v3(struct psmouse *psmouse)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ int reg_val;
+ unsigned char param[4];
+
+ reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
+ if (reg_val == -EIO)
+ goto error;
+ if (reg_val == 0 &&
+ alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
+ goto error;
+
+ if (alps_enter_command_mode(psmouse, NULL) ||
+ alps_absolute_mode_v3(psmouse)) {
psmouse_err(psmouse, "Failed to enter absolute mode\n");
goto error;
}
@@ -1303,14 +1344,6 @@ static int alps_hw_init_v3(struct psmouse *psmouse)
if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
goto error;
- /*
- * This ensures the trackstick packets are in the format
- * supported by this driver. If bit 1 isn't set the packet
- * format is different.
- */
- if (alps_command_mode_write_reg(psmouse, 0x0008, 0x82))
- goto error;
-
alps_exit_command_mode(psmouse);
/* Set rate and enable data reporting */
@@ -1323,10 +1356,6 @@ static int alps_hw_init_v3(struct psmouse *psmouse)
return 0;
-error_passthrough:
- /* Something failed while in passthrough mode, so try to get out */
- if (!alps_enter_command_mode(psmouse, NULL))
- alps_passthrough_mode_v3(psmouse, false);
error:
/*
* Leaving the touchpad in command mode will essentially render
@@ -1339,9 +1368,19 @@ error:
static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
{
+ struct alps_data *priv = psmouse->private;
struct ps2dev *ps2dev = &psmouse->ps2dev;
int reg_val, ret = -1;
+ if (priv->flags & ALPS_DUALPOINT) {
+ reg_val = alps_setup_trackstick_v3(psmouse,
+ ALPS_REG_BASE_RUSHMORE);
+ if (reg_val == -EIO)
+ goto error;
+ if (reg_val == -ENODEV)
+ priv->flags &= ~ALPS_DUALPOINT;
+ }
+
if (alps_enter_command_mode(psmouse, NULL) ||
alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
@@ -1562,6 +1601,12 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
priv->x_bits = 16;
priv->y_bits = 12;
+ /* hack to make addr_command, nibble_command available */
+ psmouse->private = priv;
+
+ if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
+ priv->flags &= ~ALPS_DUALPOINT;
+
return 0;
} else if (ec[0] == 0x88 && ec[1] == 0x07 &&
ec[2] >= 0x90 && ec[2] <= 0x9d) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 12:11:57 +0000