@@ -78,6 +78,18 @@ config MOUSE_PS2_SYNAPTICS
If unsure, say Y.
+config MOUSE_PS2_SYNAPTICS_SMBUS
+ bool "Synaptics PS/2 SMbus companion" if EXPERT
+ default y
+ depends on MOUSE_PS2
+ depends on I2C=y || I2C=MOUSE_PS2
+ select MOUSE_PS2_SMBUS
+ help
+ Say Y here if you have a Synaptics RMI4 touchpad connected to
+ to an SMBus, but enumerated through PS/2.
+
+ If unsure, say Y.
+
config MOUSE_PS2_CYPRESS
bool "Cypress PS/2 mouse protocol extension" if EXPERT
default y
@@ -773,7 +773,7 @@ static const struct psmouse_protocol psmouse_protocols[] = {
.name = "SynPS/2",
.alias = "synaptics",
.detect = synaptics_detect,
- .init = synaptics_init,
+ .init = synaptics_init_absolute,
},
{
.type = PSMOUSE_SYNAPTICS_RELATIVE,
@@ -783,6 +783,16 @@ static const struct psmouse_protocol psmouse_protocols[] = {
.init = synaptics_init_relative,
},
#endif
+#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
+ {
+ .type = PSMOUSE_SYNAPTICS_SMBUS,
+ .name = "SynSMBus",
+ .alias = "synaptics-smbus",
+ .detect = synaptics_detect,
+ .init = synaptics_init_smbus,
+ .smbus_companion = true,
+ },
+#endif
#ifdef CONFIG_MOUSE_PS2_ALPS
{
.type = PSMOUSE_ALPS,
@@ -1011,6 +1021,7 @@ static int psmouse_extensions(struct psmouse *psmouse,
unsigned int max_proto, bool set_properties)
{
bool synaptics_hardware = false;
+ int ret;
/*
* Always check for focaltech, this is safe as it uses pnp-id
@@ -1073,9 +1084,14 @@ static int psmouse_extensions(struct psmouse *psmouse,
* enabled first, since we try detecting Synaptics
* even when protocol is disabled.
*/
- if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) &&
- (!set_properties || synaptics_init(psmouse) == 0)) {
- return PSMOUSE_SYNAPTICS;
+ if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) ||
+ IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) {
+ if (!set_properties)
+ return PSMOUSE_SYNAPTICS;
+
+ ret = synaptics_init(psmouse);
+ if (ret >= 0)
+ return ret;
}
/*
@@ -66,6 +66,7 @@ enum psmouse_type {
PSMOUSE_FOCALTECH,
PSMOUSE_VMMOUSE,
PSMOUSE_BYD,
+ PSMOUSE_SYNAPTICS_SMBUS,
PSMOUSE_AUTO /* This one should always be last */
};
@@ -29,6 +29,8 @@
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
+#include <linux/rmi.h>
+#include <linux/i2c.h>
#include <linux/slab.h>
#include "psmouse.h"
#include "synaptics.h"
@@ -119,59 +121,8 @@ void synaptics_reset(struct psmouse *psmouse)
synaptics_mode_cmd(psmouse, 0);
}
-#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
-
-static bool cr48_profile_sensor;
-
-#define ANY_BOARD_ID 0
-struct min_max_quirk {
- const char * const *pnp_ids;
- struct {
- u32 min, max;
- } board_id;
- u32 x_min, x_max, y_min, y_max;
-};
-
-static const struct min_max_quirk min_max_pnpid_table[] = {
- {
- (const char * const []){"LEN0033", NULL},
- {ANY_BOARD_ID, ANY_BOARD_ID},
- 1024, 5052, 2258, 4832
- },
- {
- (const char * const []){"LEN0042", NULL},
- {ANY_BOARD_ID, ANY_BOARD_ID},
- 1232, 5710, 1156, 4696
- },
- {
- (const char * const []){"LEN0034", "LEN0036", "LEN0037",
- "LEN0039", "LEN2002", "LEN2004",
- NULL},
- {ANY_BOARD_ID, 2961},
- 1024, 5112, 2024, 4832
- },
- {
- (const char * const []){"LEN2000", NULL},
- {ANY_BOARD_ID, ANY_BOARD_ID},
- 1024, 5113, 2021, 4832
- },
- {
- (const char * const []){"LEN2001", NULL},
- {ANY_BOARD_ID, ANY_BOARD_ID},
- 1024, 5022, 2508, 4832
- },
- {
- (const char * const []){"LEN2006", NULL},
- {2691, 2691},
- 1024, 5045, 2457, 4832
- },
- {
- (const char * const []){"LEN2006", NULL},
- {ANY_BOARD_ID, ANY_BOARD_ID},
- 1264, 5675, 1171, 4688
- },
- { }
-};
+#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
+ defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
/* This list has been kindly provided by Synaptics. */
static const char * const topbuttonpad_pnp_ids[] = {
@@ -211,37 +162,50 @@ static const char * const topbuttonpad_pnp_ids[] = {
NULL
};
-/* This list has been kindly provided by Synaptics. */
-static const char * const forcepad_pnp_ids[] = {
- "SYN300D",
- "SYN3014",
+static const char * const smbus_pnp_ids[] = {
+ /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
+ "LEN0048", /* X1 Carbon 3 */
+ "LEN0046", /* X250 */
+ "LEN004a", /* W541 */
+ "LEN200f", /* T450s */
NULL
};
-/*****************************************************************************
- * Synaptics communications functions
- ****************************************************************************/
-
/*
- * Synaptics touchpads report the y coordinate from bottom to top, which is
- * opposite from what userspace expects.
- * This function is used to invert y before reporting.
+ * Send a command to the synpatics touchpad by special commands
*/
-static int synaptics_invert_y(int y)
+static int synaptics_send_cmd(struct psmouse *psmouse,
+ unsigned char c, unsigned char *param)
{
- return YMAX_NOMINAL + YMIN_NOMINAL - y;
+ int error;
+
+ error = psmouse_sliced_command(psmouse, c);
+ if (error)
+ return error;
+
+ error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
+ if (error)
+ return error;
+
+ return 0;
}
/*
- * Send a command to the synpatics touchpad by special commands
+ * Identify Touchpad
+ * See also the SYN_ID_* macros
*/
-static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
+static int synaptics_identify(struct psmouse *psmouse,
+ struct synaptics_device_info *info)
{
- if (psmouse_sliced_command(psmouse, c))
- return -1;
- if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
- return -1;
- return 0;
+ unsigned char id[3];
+ int error;
+
+ error = synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id);
+ if (error)
+ return error;
+
+ info->identity = (id[0] << 16) | (id[1] << 8) | id[2];
+ return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
}
/*
@@ -262,6 +226,23 @@ static int synaptics_model_id(struct psmouse *psmouse,
return 0;
}
+/*
+ * Read the firmware id from the touchpad
+ */
+static int synaptics_firmware_id(struct psmouse *psmouse,
+ struct synaptics_device_info *info)
+{
+ unsigned char fwid[3];
+ int error;
+
+ error = synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid);
+ if (error)
+ return error;
+
+ info->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
+ return 0;
+}
+
static int synaptics_more_extended_queries(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
@@ -303,23 +284,6 @@ static int synaptics_query_modes(struct psmouse *psmouse,
}
/*
- * Read the firmware id from the touchpad
- */
-static int synaptics_firmware_id(struct psmouse *psmouse,
- struct synaptics_device_info *info)
-{
- unsigned char fwid[3];
- int error;
-
- error = synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid);
- if (error)
- return error;
-
- info->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
- return 0;
-}
-
-/*
* Read the capability-bits from the touchpad
* see also the SYN_CAP_* macros
*/
@@ -380,28 +344,9 @@ static int synaptics_capability(struct psmouse *psmouse,
}
/*
- * Identify Touchpad
- * See also the SYN_ID_* macros
- */
-static int synaptics_identify(struct psmouse *psmouse,
- struct synaptics_device_info *info)
-{
- unsigned char id[3];
- int error;
-
- error = synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id);
- if (error)
- return error;
-
- info->identity = (id[0] << 16) | (id[1] << 8) | id[2];
- return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
-}
-
-/*
* Read touchpad resolution and maximum reported coordinates
* Resolution is left zero if touchpad does not support the query
*/
-
static int synaptics_resolution(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
@@ -460,10 +405,118 @@ static int synaptics_resolution(struct psmouse *psmouse,
return 0;
}
+static int synaptics_query_hardware(struct psmouse *psmouse,
+ struct synaptics_device_info *info)
+{
+ int error;
+
+ error = synaptics_identify(psmouse, info);
+ if (error)
+ return error;
+
+ error = synaptics_model_id(psmouse, info);
+ if (error)
+ return error;
+
+ error = synaptics_firmware_id(psmouse, info);
+ if (error)
+ return error;
+
+ error = synaptics_query_modes(psmouse, info);
+ if (error)
+ return error;
+
+ error = synaptics_capability(psmouse, info);
+ if (error)
+ return error;
+
+ error = synaptics_resolution(psmouse, info);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
+
+#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
+
+static bool cr48_profile_sensor;
+
+#define ANY_BOARD_ID 0
+struct min_max_quirk {
+ const char * const *pnp_ids;
+ struct {
+ u32 min, max;
+ } board_id;
+ u32 x_min, x_max, y_min, y_max;
+};
+
+static const struct min_max_quirk min_max_pnpid_table[] = {
+ {
+ (const char * const []){"LEN0033", NULL},
+ {ANY_BOARD_ID, ANY_BOARD_ID},
+ 1024, 5052, 2258, 4832
+ },
+ {
+ (const char * const []){"LEN0042", NULL},
+ {ANY_BOARD_ID, ANY_BOARD_ID},
+ 1232, 5710, 1156, 4696
+ },
+ {
+ (const char * const []){"LEN0034", "LEN0036", "LEN0037",
+ "LEN0039", "LEN2002", "LEN2004",
+ NULL},
+ {ANY_BOARD_ID, 2961},
+ 1024, 5112, 2024, 4832
+ },
+ {
+ (const char * const []){"LEN2000", NULL},
+ {ANY_BOARD_ID, ANY_BOARD_ID},
+ 1024, 5113, 2021, 4832
+ },
+ {
+ (const char * const []){"LEN2001", NULL},
+ {ANY_BOARD_ID, ANY_BOARD_ID},
+ 1024, 5022, 2508, 4832
+ },
+ {
+ (const char * const []){"LEN2006", NULL},
+ {2691, 2691},
+ 1024, 5045, 2457, 4832
+ },
+ {
+ (const char * const []){"LEN2006", NULL},
+ {ANY_BOARD_ID, ANY_BOARD_ID},
+ 1264, 5675, 1171, 4688
+ },
+ { }
+};
+
+/* This list has been kindly provided by Synaptics. */
+static const char * const forcepad_pnp_ids[] = {
+ "SYN300D",
+ "SYN3014",
+ NULL
+};
+
+/*****************************************************************************
+ * Synaptics communications functions
+ ****************************************************************************/
+
/*
- * Apply quirk(s) if the hardware matches
+ * Synaptics touchpads report the y coordinate from bottom to top, which is
+ * opposite from what userspace expects.
+ * This function is used to invert y before reporting.
*/
+static int synaptics_invert_y(int y)
+{
+ return YMAX_NOMINAL + YMIN_NOMINAL - y;
+}
+/*
+ * Apply quirk(s) if the hardware matches
+ */
static void synaptics_apply_quirks(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
@@ -494,38 +547,6 @@ static void synaptics_apply_quirks(struct psmouse *psmouse,
}
}
-static int synaptics_query_hardware(struct psmouse *psmouse,
- struct synaptics_device_info *info)
-{
- int error;
-
- error = synaptics_identify(psmouse, info);
- if (error)
- return error;
-
- error = synaptics_model_id(psmouse, info);
- if (error)
- return error;
-
- error = synaptics_firmware_id(psmouse, info);
- if (error)
- return error;
-
- error = synaptics_query_modes(psmouse, info);
- if (error)
- return error;
-
- error = synaptics_capability(psmouse, info);
- if (error)
- return error;
-
- error = synaptics_resolution(psmouse, info);
- if (error)
- return error;
-
- return 0;
-}
-
static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
{
static unsigned char param = 0xc8;
@@ -1350,6 +1371,12 @@ static void synaptics_disconnect(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
+ /*
+ * We might have left a breadcrumb when trying to
+ * set up SMbus companion.
+ */
+ psmouse_smbus_cleanup(psmouse);
+
if (!priv->absolute_mode &&
SYN_ID_DISGEST_SUPPORTED(priv->info.identity))
device_remove_file(&psmouse->ps2dev.serio->dev,
@@ -1490,39 +1517,20 @@ void __init synaptics_module_init(void)
cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
}
-static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
+static int synaptics_init_ps2(struct psmouse *psmouse,
+ struct synaptics_device_info *info,
+ bool absolute_mode)
{
struct synaptics_data *priv;
- struct synaptics_device_info *info;
- int err = -1;
+ int err;
- /*
- * The OLPC XO has issues with Synaptics' absolute mode; the constant
- * packet spew overloads the EC such that key presses on the keyboard
- * are missed. Given that, don't even attempt to use Absolute mode.
- * Relative mode seems to work just fine.
- */
- if (absolute_mode && broken_olpc_ec) {
- psmouse_info(psmouse,
- "OLPC XO detected, not enabling Synaptics protocol.\n");
- return -ENODEV;
- }
+ synaptics_apply_quirks(psmouse, info);
psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
if (!priv)
return -ENOMEM;
- info = &priv->info;
-
- psmouse_reset(psmouse);
-
- if (synaptics_query_hardware(psmouse, info)) {
- psmouse_err(psmouse, "Unable to query device.\n");
- goto init_fail;
- }
-
- synaptics_apply_quirks(psmouse, info);
-
+ priv->info = *info;
priv->absolute_mode = absolute_mode;
if (SYN_ID_DISGEST_SUPPORTED(info->identity))
priv->disable_gesture = true;
@@ -1610,7 +1618,23 @@ static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
return err;
}
-int synaptics_init(struct psmouse *psmouse)
+static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
+{
+ struct synaptics_device_info info;
+ int error;
+
+ psmouse_reset(psmouse);
+
+ error = synaptics_query_hardware(psmouse, &info);
+ if (error) {
+ psmouse_err(psmouse, "Unable to query device: %d\n", error);
+ return error;
+ }
+
+ return synaptics_init_ps2(psmouse, &info, absolute_mode);
+}
+
+int synaptics_init_absolute(struct psmouse *psmouse)
{
return __synaptics_init(psmouse, true);
}
@@ -1620,15 +1644,195 @@ int synaptics_init_relative(struct psmouse *psmouse)
return __synaptics_init(psmouse, false);
}
+static int synaptics_setup_ps2(struct psmouse *psmouse,
+ struct synaptics_device_info *info)
+{
+ bool absolute_mode = true;
+ int error;
+
+ /*
+ * The OLPC XO has issues with Synaptics' absolute mode; the constant
+ * packet spew overloads the EC such that key presses on the keyboard
+ * are missed. Given that, don't even attempt to use Absolute mode.
+ * Relative mode seems to work just fine.
+ */
+ if (broken_olpc_ec) {
+ psmouse_info(psmouse,
+ "OLPC XO detected, forcing relative protocol.\n");
+ absolute_mode = false;
+ }
+
+ error = synaptics_init_ps2(psmouse, info, absolute_mode);
+ if (error)
+ return error;
+
+ return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
+}
+
#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
void __init synaptics_module_init(void)
{
}
-int synaptics_init(struct psmouse *psmouse)
+static int synaptics_setup_ps2(struct psmouse *psmouse,
+ struct synaptics_device_info *info)
{
return -ENOSYS;
}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
+
+#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
+
+/*
+ * The newest Synaptics device can use a secondary bus (called InterTouch) which
+ * provides a better bandwidth and allow a better control of the touchpads.
+ * This is used to decide if we need to use this bus or not.
+ */
+enum {
+ SYNAPTICS_INTERTOUCH_NOT_SET = -1,
+ SYNAPTICS_INTERTOUCH_OFF,
+ SYNAPTICS_INTERTOUCH_ON,
+};
+
+static int synaptics_intertouch = SYNAPTICS_INTERTOUCH_NOT_SET;
+module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
+MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
+
+static int synaptics_create_intertouch(struct psmouse *psmouse,
+ struct synaptics_device_info *info,
+ bool leave_breadcrumbs)
+{
+ bool topbuttonpad =
+ psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
+ !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
+ const struct rmi_device_platform_data pdata = {
+ .sensor_pdata = {
+ .sensor_type = rmi_sensor_touchpad,
+ .axis_align.flip_y = true,
+ /* to prevent cursors jumps: */
+ .kernel_tracking = true,
+ .topbuttonpad = topbuttonpad,
+ },
+ .f30_data = {
+ .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
+ .trackstick_buttons =
+ !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
+ },
+ };
+ const struct i2c_board_info intertouch_board = {
+ I2C_BOARD_INFO("rmi4_smbus", 0x2c),
+ .flags = I2C_CLIENT_HOST_NOTIFY,
+ };
+
+ return psmouse_smbus_init(psmouse, &intertouch_board,
+ &pdata, sizeof(pdata),
+ leave_breadcrumbs);
+}
+
+/**
+ * synaptics_setup_intertouch - called once the PS/2 devices are enumerated
+ * and decides to instantiate a SMBus InterTouch device.
+ */
+static int synaptics_setup_intertouch(struct psmouse *psmouse,
+ struct synaptics_device_info *info,
+ bool leave_breadcrumbs)
+{
+ int error;
+
+ if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
+ return -ENXIO;
+
+ if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
+ if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
+ !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids))
+ return -ENXIO;
+ }
+
+ psmouse_info(psmouse, "Trying to set up SMBus access\n");
+
+ error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
+ if (error) {
+ if (error == -EAGAIN)
+ psmouse_info(psmouse, "SMbus companion is not ready yet\n");
+ else
+ psmouse_err(psmouse, "unable to create intertouch device\n");
+
+ return error;
+ }
+
+ return 0;
+}
+
+int synaptics_init_smbus(struct psmouse *psmouse)
+{
+ struct synaptics_device_info info;
+ int error;
+
+ psmouse_reset(psmouse);
+
+ error = synaptics_query_hardware(psmouse, &info);
+ if (error) {
+ psmouse_err(psmouse, "Unable to query device: %d\n", error);
+ return error;
+ }
+
+ if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
+ return -ENXIO;
+
+ return synaptics_create_intertouch(psmouse, &info, false);
+}
+
+#else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
+
+int synaptics_init_smbus(struct psmouse *psmouse)
+{
+ return -ENOSYS;
+}
+
+#endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
+
+#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
+ defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
+
+int synaptics_init(struct psmouse *psmouse)
+{
+ struct synaptics_device_info info;
+ int error;
+ int retval;
+
+ psmouse_reset(psmouse);
+
+ error = synaptics_query_hardware(psmouse, &info);
+ if (error) {
+ psmouse_err(psmouse, "Unable to query device: %d\n", error);
+ return error;
+ }
+
+ if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
+ error = synaptics_setup_intertouch(psmouse, &info, true);
+ if (!error)
+ return PSMOUSE_SYNAPTICS_SMBUS;
+ }
+
+ retval = synaptics_setup_ps2(psmouse, &info);
+ if (retval < 0) {
+ /*
+ * Not using any flavor of Synaptics support, so clean up
+ * SMbus breadcrumbs, if any.
+ */
+ psmouse_smbus_cleanup(psmouse);
+ }
+
+ return retval;
+}
+
+#else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
+
+int synaptics_init(struct psmouse *psmouse)
+{
+ return -ENOSYS;
+}
+
+#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
@@ -90,6 +90,7 @@
#define SYN_CAP_ADV_GESTURE(ex0c) ((ex0c) & 0x080000)
#define SYN_CAP_REDUCED_FILTERING(ex0c) ((ex0c) & 0x000400)
#define SYN_CAP_IMAGE_SENSOR(ex0c) ((ex0c) & 0x000800)
+#define SYN_CAP_INTERTOUCH(ex0c) ((ex0c) & 0x004000)
/*
* The following descibes response for the 0x10 query.
@@ -204,8 +205,10 @@ struct synaptics_data {
void synaptics_module_init(void);
int synaptics_detect(struct psmouse *psmouse, bool set_properties);
-int synaptics_init(struct psmouse *psmouse);
+int synaptics_init_absolute(struct psmouse *psmouse);
int synaptics_init_relative(struct psmouse *psmouse);
+int synaptics_init_smbus(struct psmouse *psmouse);
+int synaptics_init(struct psmouse *psmouse);
void synaptics_reset(struct psmouse *psmouse);
#endif /* _SYNAPTICS_H */