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Subject[PATCH] Input: elan_i2c - Support two physical button touchapd for elan_i2c
Date
Extend information accessing to get button setting information
and support L/R button-pad for I2C touchpad

Signed-off-by: KT Liao <kt.liao@emc.com.tw>
---
drivers/input/mouse/elan_i2c.h | 2 +-
drivers/input/mouse/elan_i2c_core.c | 9 +++++++--
drivers/input/mouse/elan_i2c_i2c.c | 13 ++++++++++++-
drivers/input/mouse/elan_i2c_smbus.c | 4 +++-
4 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/drivers/input/mouse/elan_i2c.h b/drivers/input/mouse/elan_i2c.h
index 61c2024..599544c 100644
--- a/drivers/input/mouse/elan_i2c.h
+++ b/drivers/input/mouse/elan_i2c.h
@@ -58,7 +58,7 @@ struct elan_transport_ops {

int (*get_version)(struct i2c_client *client, bool iap, u8 *version);
int (*get_sm_version)(struct i2c_client *client,
- u16 *ic_type, u8 *version);
+ u16 *ic_type, u8 *version, u8 *clickpad);
int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
int (*get_product_id)(struct i2c_client *client, u16 *id);

diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 0d111322..59baced 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -95,6 +95,7 @@ struct elan_tp_data {
u8 min_baseline;
u8 max_baseline;
bool baseline_ready;
+ u8 clickpad;
};

static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
@@ -213,7 +214,7 @@ static int elan_query_product(struct elan_tp_data *data)
return error;

error = data->ops->get_sm_version(data->client, &data->ic_type,
- &data->sm_version);
+ &data->sm_version, &data->clickpad);
if (error)
return error;

@@ -923,6 +924,7 @@ static void elan_report_absolute(struct elan_tp_data *data, u8 *packet)
}

input_report_key(input, BTN_LEFT, tp_info & 0x01);
+ input_report_key(input, BTN_RIGHT, tp_info & 0x02);
input_report_abs(input, ABS_DISTANCE, hover_event != 0);
input_mt_report_pointer_emulation(input, true);
input_sync(input);
@@ -991,7 +993,10 @@ static int elan_setup_input_device(struct elan_tp_data *data)

__set_bit(EV_ABS, input->evbit);
__set_bit(INPUT_PROP_POINTER, input->propbit);
- __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
+ if (data->clickpad)
+ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
+ else
+ __set_bit(BTN_RIGHT, input->keybit);
__set_bit(BTN_LEFT, input->keybit);

/* Set up ST parameters */
diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c
index 80172f2..15b1330 100644
--- a/drivers/input/mouse/elan_i2c_i2c.c
+++ b/drivers/input/mouse/elan_i2c_i2c.c
@@ -288,7 +288,8 @@ static int elan_i2c_get_version(struct i2c_client *client,
}

static int elan_i2c_get_sm_version(struct i2c_client *client,
- u16 *ic_type, u8 *version)
+ u16 *ic_type, u8 *version,
+ u8 *clickpad)
{
int error;
u8 pattern_ver;
@@ -317,6 +318,7 @@ static int elan_i2c_get_sm_version(struct i2c_client *client,
return error;
}
*version = val[1];
+ *clickpad = val[0] & 0x10;
} else {
error = elan_i2c_read_cmd(client, ETP_I2C_OSM_VERSION_CMD, val);
if (error) {
@@ -326,6 +328,15 @@ static int elan_i2c_get_sm_version(struct i2c_client *client,
}
*version = val[0];
*ic_type = val[1];
+
+ error = elan_i2c_read_cmd(client, ETP_I2C_NSM_VERSION_CMD,
+ val);
+ if (error) {
+ dev_err(&client->dev, "failed to get SM version: %d\n",
+ error);
+ return error;
+ }
+ *clickpad = val[0] & 0x10;
}

return 0;
diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c
index df7a57c..29f9952 100644
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -166,7 +166,8 @@ static int elan_smbus_get_version(struct i2c_client *client,
}

static int elan_smbus_get_sm_version(struct i2c_client *client,
- u16 *ic_type, u8 *version)
+ u16 *ic_type, u8 *version,
+ u8 *clickpad)
{
int error;
u8 val[3];
@@ -180,6 +181,7 @@ static int elan_smbus_get_sm_version(struct i2c_client *client,

*version = val[0];
*ic_type = val[1];
+ *clickpad = val[0] & 0x10;
return 0;
}

--
2.7.4
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