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Input: elan_i2c - adjust for newer firmware pressure reporting

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Get pressure format flag from firmware to check if we need to normalize
pressure data before reporting it.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
duson
2015-04-12 16:01:05 -07:00
committed by Dmitry Torokhov
parent 8b8a518ef1
commit b9bced0eec
4 changed files with 49 additions and 10 deletions
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23
drivers/input/mouse/elan_i2c_i2c.c
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@@ -41,6 +41,7 @@
#define ETP_I2C_MAX_X_AXIS_CMD 0x0106
#define ETP_I2C_MAX_Y_AXIS_CMD 0x0107
#define ETP_I2C_RESOLUTION_CMD 0x0108
#define ETP_I2C_PRESSURE_CMD 0x010A
#define ETP_I2C_IAP_VERSION_CMD 0x0110
#define ETP_I2C_SET_CMD 0x0300
#define ETP_I2C_POWER_CMD 0x0307
@@ -370,6 +371,27 @@ static int elan_i2c_get_num_traces(struct i2c_client *client,
return 0;
}
static int elan_i2c_get_pressure_adjustment(struct i2c_client *client,
int *adjustment)
{
int error;
u8 val[3];
error = elan_i2c_read_cmd(client, ETP_I2C_PRESSURE_CMD, val);
if (error) {
dev_err(&client->dev, "failed to get pressure format: %d\n",
error);
return error;
}
if ((val[0] >> 4) & 0x1)
*adjustment = 0;
else
*adjustment = ETP_PRESSURE_OFFSET;
return 0;
}
static int elan_i2c_iap_get_mode(struct i2c_client *client, enum tp_mode *mode)
{
int error;
@@ -602,6 +624,7 @@ const struct elan_transport_ops elan_i2c_ops = {
.get_sm_version = elan_i2c_get_sm_version,
.get_product_id = elan_i2c_get_product_id,
.get_checksum = elan_i2c_get_checksum,
.get_pressure_adjustment = elan_i2c_get_pressure_adjustment,
.get_max = elan_i2c_get_max,
.get_resolution = elan_i2c_get_resolution,