forked from Minki/linux
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>
This commit is contained in:
KT Liao
Dmitry Torokhov
parent
c5928551fd
commit
a2eaf299d1
@ -58,7 +58,7 @@ struct elan_transport_ops {
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int (*get_version)(struct i2c_client *client, bool iap, u8 *version);
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int (*get_sm_version)(struct i2c_client *client,
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u8* ic_type, u8 *version);
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u16 *ic_type, u8 *version);
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int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
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int (*get_product_id)(struct i2c_client *client, u16 *id);
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@ -82,6 +82,7 @@ struct elan_transport_ops {
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int (*get_report)(struct i2c_client *client, u8 *report);
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int (*get_pressure_adjustment)(struct i2c_client *client,
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int *adjustment);
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int (*get_pattern)(struct i2c_client *client, u8 *pattern);
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};
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extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;
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@ -5,7 +5,7 @@
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*
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* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
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* Author: KT Liao <kt.liao@emc.com.tw>
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* Version: 1.6.2
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* Version: 1.6.3
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*
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* Based on cyapa driver:
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* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
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@ -41,7 +41,7 @@
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#include "elan_i2c.h"
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#define DRIVER_NAME "elan_i2c"
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#define ELAN_DRIVER_VERSION "1.6.2"
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#define ELAN_DRIVER_VERSION "1.6.3"
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#define ELAN_VENDOR_ID 0x04f3
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#define ETP_MAX_PRESSURE 255
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#define ETP_FWIDTH_REDUCE 90
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@ -78,6 +78,7 @@ struct elan_tp_data {
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unsigned int x_res;
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unsigned int y_res;
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u8 pattern;
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u16 product_id;
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u8 fw_version;
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u8 sm_version;
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@ -85,7 +86,7 @@ struct elan_tp_data {
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u16 fw_checksum;
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int pressure_adjustment;
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u8 mode;
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u8 ic_type;
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u16 ic_type;
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u16 fw_validpage_count;
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u16 fw_signature_address;
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@ -96,10 +97,10 @@ struct elan_tp_data {
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bool baseline_ready;
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};
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static int elan_get_fwinfo(u8 iap_version, u16 *validpage_count,
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static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
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u16 *signature_address)
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{
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switch (iap_version) {
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switch (ic_type) {
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case 0x00:
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case 0x06:
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case 0x08:
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@ -119,6 +120,9 @@ static int elan_get_fwinfo(u8 iap_version, u16 *validpage_count,
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case 0x0E:
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*validpage_count = 640;
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break;
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case 0x10:
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*validpage_count = 1024;
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break;
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default:
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/* unknown ic type clear value */
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*validpage_count = 0;
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@ -305,6 +309,7 @@ static int elan_initialize(struct elan_tp_data *data)
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static int elan_query_device_info(struct elan_tp_data *data)
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{
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int error;
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u16 ic_type;
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error = data->ops->get_version(data->client, false, &data->fw_version);
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if (error)
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@ -324,7 +329,16 @@ static int elan_query_device_info(struct elan_tp_data *data)
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if (error)
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return error;
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error = elan_get_fwinfo(data->iap_version, &data->fw_validpage_count,
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error = data->ops->get_pattern(data->client, &data->pattern);
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if (error)
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return error;
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if (data->pattern == 0x01)
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ic_type = data->ic_type;
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else
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ic_type = data->iap_version;
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error = elan_get_fwinfo(ic_type, &data->fw_validpage_count,
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&data->fw_signature_address);
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if (error)
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dev_warn(&data->client->dev,
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@ -1108,10 +1122,13 @@ static int elan_probe(struct i2c_client *client,
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"Elan Touchpad Extra Information:\n"
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" Max ABS X,Y: %d,%d\n"
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" Width X,Y: %d,%d\n"
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" Resolution X,Y: %d,%d (dots/mm)\n",
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" Resolution X,Y: %d,%d (dots/mm)\n"
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" ic type: 0x%x\n"
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" info pattern: 0x%x\n",
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data->max_x, data->max_y,
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data->width_x, data->width_y,
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data->x_res, data->y_res);
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data->x_res, data->y_res,
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data->ic_type, data->pattern);
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/* Set up input device properties based on queried parameters. */
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error = elan_setup_input_device(data);
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@ -34,9 +34,12 @@
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#define ETP_I2C_DESC_CMD 0x0001
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#define ETP_I2C_REPORT_DESC_CMD 0x0002
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#define ETP_I2C_STAND_CMD 0x0005
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#define ETP_I2C_PATTERN_CMD 0x0100
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#define ETP_I2C_UNIQUEID_CMD 0x0101
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#define ETP_I2C_FW_VERSION_CMD 0x0102
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#define ETP_I2C_SM_VERSION_CMD 0x0103
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#define ETP_I2C_IC_TYPE_CMD 0x0103
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#define ETP_I2C_OSM_VERSION_CMD 0x0103
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#define ETP_I2C_NSM_VERSION_CMD 0x0104
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#define ETP_I2C_XY_TRACENUM_CMD 0x0105
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#define ETP_I2C_MAX_X_AXIS_CMD 0x0106
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#define ETP_I2C_MAX_Y_AXIS_CMD 0x0107
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@ -239,12 +242,34 @@ static int elan_i2c_get_baseline_data(struct i2c_client *client,
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return 0;
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}
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static int elan_i2c_get_pattern(struct i2c_client *client, u8 *pattern)
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{
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int error;
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u8 val[3];
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error = elan_i2c_read_cmd(client, ETP_I2C_PATTERN_CMD, val);
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if (error) {
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dev_err(&client->dev, "failed to get pattern: %d\n", error);
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return error;
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}
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*pattern = val[1];
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return 0;
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}
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static int elan_i2c_get_version(struct i2c_client *client,
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bool iap, u8 *version)
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{
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int error;
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u8 pattern_ver;
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u8 val[3];
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error = elan_i2c_get_pattern(client, &pattern_ver);
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if (error) {
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dev_err(&client->dev, "failed to get pattern version\n");
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return error;
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}
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error = elan_i2c_read_cmd(client,
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iap ? ETP_I2C_IAP_VERSION_CMD :
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ETP_I2C_FW_VERSION_CMD,
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@ -255,24 +280,54 @@ static int elan_i2c_get_version(struct i2c_client *client,
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return error;
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}
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*version = val[0];
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if (pattern_ver == 0x01)
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*version = iap ? val[1] : val[0];
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else
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*version = val[0];
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return 0;
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}
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static int elan_i2c_get_sm_version(struct i2c_client *client,
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u8 *ic_type, u8 *version)
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u16 *ic_type, u8 *version)
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{
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int error;
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u8 pattern_ver;
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u8 val[3];
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error = elan_i2c_read_cmd(client, ETP_I2C_SM_VERSION_CMD, val);
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error = elan_i2c_get_pattern(client, &pattern_ver);
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if (error) {
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dev_err(&client->dev, "failed to get SM version: %d\n", error);
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dev_err(&client->dev, "failed to get pattern version\n");
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return error;
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}
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*version = val[0];
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*ic_type = val[1];
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if (pattern_ver == 0x01) {
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error = elan_i2c_read_cmd(client, ETP_I2C_IC_TYPE_CMD, val);
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if (error) {
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dev_err(&client->dev, "failed to get ic type: %d\n",
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error);
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return error;
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}
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*ic_type = be16_to_cpup((__be16 *)val);
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error = elan_i2c_read_cmd(client, ETP_I2C_NSM_VERSION_CMD,
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val);
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if (error) {
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dev_err(&client->dev, "failed to get SM version: %d\n",
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error);
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return error;
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}
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*version = val[1];
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} else {
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error = elan_i2c_read_cmd(client, ETP_I2C_OSM_VERSION_CMD, val);
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if (error) {
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dev_err(&client->dev, "failed to get SM version: %d\n",
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error);
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return error;
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}
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*version = val[0];
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*ic_type = val[1];
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}
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return 0;
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}
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@ -639,5 +694,7 @@ const struct elan_transport_ops elan_i2c_ops = {
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.write_fw_block = elan_i2c_write_fw_block,
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.finish_fw_update = elan_i2c_finish_fw_update,
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.get_pattern = elan_i2c_get_pattern,
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.get_report = elan_i2c_get_report,
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};
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@ -166,7 +166,7 @@ static int elan_smbus_get_version(struct i2c_client *client,
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}
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static int elan_smbus_get_sm_version(struct i2c_client *client,
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u8 *ic_type, u8 *version)
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u16 *ic_type, u8 *version)
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{
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int error;
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u8 val[3];
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@ -495,6 +495,12 @@ static int elan_smbus_finish_fw_update(struct i2c_client *client,
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return 0;
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}
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static int elan_smbus_get_pattern(struct i2c_client *client, u8 *pattern)
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{
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*pattern = 0;
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return 0;
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}
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const struct elan_transport_ops elan_smbus_ops = {
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.initialize = elan_smbus_initialize,
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.sleep_control = elan_smbus_sleep_control,
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@ -524,4 +530,5 @@ const struct elan_transport_ops elan_smbus_ops = {
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.finish_fw_update = elan_smbus_finish_fw_update,
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.get_report = elan_smbus_get_report,
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.get_pattern = elan_smbus_get_pattern,
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};
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