Input: elan_i2c - add support for fetching chip type on newer hardware

Newer Elantech hardware requires different way of fetching chip type and
version data.

Signed-off-by: KT Liao <kt.liao@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/mouse/elan_i2c.h b/drivers/input/mouse/elan_i2c.h
index c0ec261..61c2024 100644 (file)
--- 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,
-                             u8* ic_type, u8 *version);
+                             u16 *ic_type, u8 *version);
        int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
        int (*get_product_id)(struct i2c_client *client, u16 *id);
 
@@ -82,6 +82,7 @@ struct elan_transport_ops {
        int (*get_report)(struct i2c_client *client, u8 *report);
        int (*get_pressure_adjustment)(struct i2c_client *client,
                                       int *adjustment);
+       int (*get_pattern)(struct i2c_client *client, u8 *pattern);
 };
 
 extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;

diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 551ad29..3b616cb 100644 (file)
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -5,7 +5,7 @@
  *
  * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
  * Author: KT Liao <kt.liao@emc.com.tw>
- * Version: 1.6.2
+ * Version: 1.6.3
  *
  * Based on cyapa driver:
  * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
@@ -41,7 +41,7 @@
 #include "elan_i2c.h"
 
 #define DRIVER_NAME            "elan_i2c"
-#define ELAN_DRIVER_VERSION    "1.6.2"
+#define ELAN_DRIVER_VERSION    "1.6.3"
 #define ELAN_VENDOR_ID         0x04f3
 #define ETP_MAX_PRESSURE       255
 #define ETP_FWIDTH_REDUCE      90
@@ -78,6 +78,7 @@ struct elan_tp_data {
        unsigned int            x_res;
        unsigned int            y_res;
 
+       u8                      pattern;
        u16                     product_id;
        u8                      fw_version;
        u8                      sm_version;
@@ -85,7 +86,7 @@ struct elan_tp_data {
        u16                     fw_checksum;
        int                     pressure_adjustment;
        u8                      mode;
-       u8                      ic_type;
+       u16                     ic_type;
        u16                     fw_validpage_count;
        u16                     fw_signature_address;
 
@@ -96,10 +97,10 @@ struct elan_tp_data {
        bool                    baseline_ready;
 };
 
-static int elan_get_fwinfo(u8 iap_version, u16 *validpage_count,
+static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
                           u16 *signature_address)
 {
-       switch (iap_version) {
+       switch (ic_type) {
        case 0x00:
        case 0x06:
        case 0x08:
@@ -119,6 +120,9 @@ static int elan_get_fwinfo(u8 iap_version, u16 *validpage_count,
        case 0x0E:
                *validpage_count = 640;
                break;
+       case 0x10:
+               *validpage_count = 1024;
+               break;
        default:
                /* unknown ic type clear value */
                *validpage_count = 0;
@@ -305,6 +309,7 @@ static int elan_initialize(struct elan_tp_data *data)
 static int elan_query_device_info(struct elan_tp_data *data)
 {
        int error;
+       u16 ic_type;
 
        error = data->ops->get_version(data->client, false, &data->fw_version);
        if (error)
@@ -324,7 +329,16 @@ static int elan_query_device_info(struct elan_tp_data *data)
        if (error)
                return error;
 
-       error = elan_get_fwinfo(data->iap_version, &data->fw_validpage_count,
+       error = data->ops->get_pattern(data->client, &data->pattern);
+       if (error)
+               return error;
+
+       if (data->pattern == 0x01)
+               ic_type = data->ic_type;
+       else
+               ic_type = data->iap_version;
+
+       error = elan_get_fwinfo(ic_type, &data->fw_validpage_count,
                                &data->fw_signature_address);
        if (error)
                dev_warn(&data->client->dev,
@@ -1108,10 +1122,13 @@ static int elan_probe(struct i2c_client *client,
                "Elan Touchpad Extra Information:\n"
                "    Max ABS X,Y:   %d,%d\n"
                "    Width X,Y:   %d,%d\n"
-               "    Resolution X,Y:   %d,%d (dots/mm)\n",
+               "    Resolution X,Y:   %d,%d (dots/mm)\n"
+               "    ic type: 0x%x\n"
+               "    info pattern: 0x%x\n",
                data->max_x, data->max_y,
                data->width_x, data->width_y,
-               data->x_res, data->y_res);
+               data->x_res, data->y_res,
+               data->ic_type, data->pattern);
 
        /* Set up input device properties based on queried parameters. */
        error = elan_setup_input_device(data);

diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c
index a679e56..3be75c6 100644 (file)
--- a/drivers/input/mouse/elan_i2c_i2c.c
+++ b/drivers/input/mouse/elan_i2c_i2c.c
@@ -34,9 +34,12 @@
 #define ETP_I2C_DESC_CMD               0x0001
 #define ETP_I2C_REPORT_DESC_CMD                0x0002
 #define ETP_I2C_STAND_CMD              0x0005
+#define ETP_I2C_PATTERN_CMD            0x0100
 #define ETP_I2C_UNIQUEID_CMD           0x0101
 #define ETP_I2C_FW_VERSION_CMD         0x0102
-#define ETP_I2C_SM_VERSION_CMD         0x0103
+#define ETP_I2C_IC_TYPE_CMD            0x0103
+#define ETP_I2C_OSM_VERSION_CMD                0x0103
+#define ETP_I2C_NSM_VERSION_CMD                0x0104
 #define ETP_I2C_XY_TRACENUM_CMD                0x0105
 #define ETP_I2C_MAX_X_AXIS_CMD         0x0106
 #define ETP_I2C_MAX_Y_AXIS_CMD         0x0107
@@ -239,12 +242,34 @@ static int elan_i2c_get_baseline_data(struct i2c_client *client,
        return 0;
 }
 
+static int elan_i2c_get_pattern(struct i2c_client *client, u8 *pattern)
+{
+       int error;
+       u8 val[3];
+
+       error = elan_i2c_read_cmd(client, ETP_I2C_PATTERN_CMD, val);
+       if (error) {
+               dev_err(&client->dev, "failed to get pattern: %d\n", error);
+               return error;
+       }
+       *pattern = val[1];
+
+       return 0;
+}
+
 static int elan_i2c_get_version(struct i2c_client *client,
                                bool iap, u8 *version)
 {
        int error;
+       u8 pattern_ver;
        u8 val[3];
 
+       error = elan_i2c_get_pattern(client, &pattern_ver);
+       if (error) {
+               dev_err(&client->dev, "failed to get pattern version\n");
+               return error;
+       }
+
        error = elan_i2c_read_cmd(client,
                                  iap ? ETP_I2C_IAP_VERSION_CMD :
                                        ETP_I2C_FW_VERSION_CMD,
@@ -255,24 +280,54 @@ static int elan_i2c_get_version(struct i2c_client *client,
                return error;
        }
 
-       *version = val[0];
+       if (pattern_ver == 0x01)
+               *version = iap ? val[1] : val[0];
+       else
+               *version = val[0];
        return 0;
 }
 
 static int elan_i2c_get_sm_version(struct i2c_client *client,
-                                  u8 *ic_type, u8 *version)
+                                  u16 *ic_type, u8 *version)
 {
        int error;
+       u8 pattern_ver;
        u8 val[3];
 
-       error = elan_i2c_read_cmd(client, ETP_I2C_SM_VERSION_CMD, val);
+       error = elan_i2c_get_pattern(client, &pattern_ver);
        if (error) {
-               dev_err(&client->dev, "failed to get SM version: %d\n", error);
+               dev_err(&client->dev, "failed to get pattern version\n");
                return error;
        }
 
-       *version = val[0];
-       *ic_type = val[1];
+       if (pattern_ver == 0x01) {
+               error = elan_i2c_read_cmd(client, ETP_I2C_IC_TYPE_CMD, val);
+               if (error) {
+                       dev_err(&client->dev, "failed to get ic type: %d\n",
+                               error);
+                       return error;
+               }
+               *ic_type = be16_to_cpup((__be16 *)val);
+
+               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;
+               }
+               *version = val[1];
+       } else {
+               error = elan_i2c_read_cmd(client, ETP_I2C_OSM_VERSION_CMD, val);
+               if (error) {
+                       dev_err(&client->dev, "failed to get SM version: %d\n",
+                               error);
+                       return error;
+               }
+               *version = val[0];
+               *ic_type = val[1];
+       }
+
        return 0;
 }
 
@@ -639,5 +694,7 @@ const struct elan_transport_ops elan_i2c_ops = {
        .write_fw_block         = elan_i2c_write_fw_block,
        .finish_fw_update       = elan_i2c_finish_fw_update,
 
+       .get_pattern            = elan_i2c_get_pattern,
+
        .get_report             = elan_i2c_get_report,
 };

diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c
index e23b249..df7a57c 100644 (file)
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -166,7 +166,7 @@ static int elan_smbus_get_version(struct i2c_client *client,
 }
 
 static int elan_smbus_get_sm_version(struct i2c_client *client,
-                                    u8 *ic_type, u8 *version)
+                                    u16 *ic_type, u8 *version)
 {
        int error;
        u8 val[3];
@@ -495,6 +495,12 @@ static int elan_smbus_finish_fw_update(struct i2c_client *client,
        return 0;
 }
 
+static int elan_smbus_get_pattern(struct i2c_client *client, u8 *pattern)
+{
+       *pattern = 0;
+       return 0;
+}
+
 const struct elan_transport_ops elan_smbus_ops = {
        .initialize             = elan_smbus_initialize,
        .sleep_control          = elan_smbus_sleep_control,
@@ -524,4 +530,5 @@ const struct elan_transport_ops elan_smbus_ops = {
        .finish_fw_update       = elan_smbus_finish_fw_update,
 
        .get_report             = elan_smbus_get_report,
+       .get_pattern            = elan_smbus_get_pattern,
 };