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Input: goodix - export id and version read from device
Goodix touchscreens export through their registers a Product ID and Firmware Version. The Product ID is an ASCII encoding of the product name (e.g.: "911"). Export to sysfs (through the input subsystem) the product id and firmware version read from the device rather than using constant values. Signed-off-by: Octavian Purdila <octavian.purdila@intel.com> Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Acked-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -47,7 +47,7 @@ struct goodix_ts_data {
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/* Register defines */
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#define GOODIX_READ_COOR_ADDR 0x814E
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#define GOODIX_REG_CONFIG_DATA 0x8047
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#define GOODIX_REG_VERSION 0x8140
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#define GOODIX_REG_ID 0x8140
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#define RESOLUTION_LOC 1
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#define MAX_CONTACTS_LOC 5
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@ -230,22 +230,28 @@ static void goodix_read_config(struct goodix_ts_data *ts)
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*
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* @client: the i2c client
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* @version: output buffer containing the version on success
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* @id: output buffer containing the id on success
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*/
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static int goodix_read_version(struct i2c_client *client, u16 *version)
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static int goodix_read_version(struct i2c_client *client, u16 *version, u16 *id)
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{
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int error;
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u8 buf[6];
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char id_str[5];
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error = goodix_i2c_read(client, GOODIX_REG_VERSION, buf, sizeof(buf));
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error = goodix_i2c_read(client, GOODIX_REG_ID, buf, sizeof(buf));
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if (error) {
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dev_err(&client->dev, "read version failed: %d\n", error);
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return error;
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}
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if (version)
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*version = get_unaligned_le16(&buf[4]);
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memcpy(id_str, buf, 4);
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id_str[4] = 0;
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if (kstrtou16(id_str, 10, id))
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*id = 0x1001;
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dev_info(&client->dev, "IC VERSION: %6ph\n", buf);
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*version = get_unaligned_le16(&buf[4]);
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dev_info(&client->dev, "ID %d, version: %04x\n", *id, *version);
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return 0;
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}
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@ -279,10 +285,13 @@ static int goodix_i2c_test(struct i2c_client *client)
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* goodix_request_input_dev - Allocate, populate and register the input device
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*
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* @ts: our goodix_ts_data pointer
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* @version: device firmware version
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* @id: device ID
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*
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* Must be called during probe
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*/
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static int goodix_request_input_dev(struct goodix_ts_data *ts)
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static int goodix_request_input_dev(struct goodix_ts_data *ts, u16 version,
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u16 id)
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{
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int error;
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@ -310,8 +319,8 @@ static int goodix_request_input_dev(struct goodix_ts_data *ts)
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ts->input_dev->phys = "input/ts";
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ts->input_dev->id.bustype = BUS_I2C;
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ts->input_dev->id.vendor = 0x0416;
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ts->input_dev->id.product = 0x1001;
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ts->input_dev->id.version = 10427;
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ts->input_dev->id.product = id;
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ts->input_dev->id.version = version;
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error = input_register_device(ts->input_dev);
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if (error) {
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@ -329,7 +338,7 @@ static int goodix_ts_probe(struct i2c_client *client,
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struct goodix_ts_data *ts;
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unsigned long irq_flags;
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int error;
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u16 version_info;
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u16 version_info, id_info;
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dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr);
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@ -351,7 +360,7 @@ static int goodix_ts_probe(struct i2c_client *client,
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return error;
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}
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error = goodix_read_version(client, &version_info);
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error = goodix_read_version(client, &version_info, &id_info);
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if (error) {
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dev_err(&client->dev, "Read version failed.\n");
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return error;
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@ -359,7 +368,7 @@ static int goodix_ts_probe(struct i2c_client *client,
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goodix_read_config(ts);
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error = goodix_request_input_dev(ts);
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error = goodix_request_input_dev(ts, version_info, id_info);
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if (error)
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return error;
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