diff options
Diffstat (limited to 'drivers/input/touchscreen/wacom_i2c.c')
| -rw-r--r-- | drivers/input/touchscreen/wacom_i2c.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c index fe4ea6204a4e..141754b2764c 100644 --- a/drivers/input/touchscreen/wacom_i2c.c +++ b/drivers/input/touchscreen/wacom_i2c.c @@ -24,12 +24,19 @@ #define WACOM_IN_PROXIMITY BIT(5) /* Registers */ -#define WACOM_CMD_QUERY0 0x04 -#define WACOM_CMD_QUERY1 0x00 -#define WACOM_CMD_QUERY2 0x33 -#define WACOM_CMD_QUERY3 0x02 -#define WACOM_CMD_THROW0 0x05 -#define WACOM_CMD_THROW1 0x00 +#define WACOM_COMMAND_LSB 0x04 +#define WACOM_COMMAND_MSB 0x00 + +#define WACOM_DATA_LSB 0x05 +#define WACOM_DATA_MSB 0x00 + +/* Report types */ +#define REPORT_FEATURE 0x30 + +/* Requests / operations */ +#define OPCODE_GET_REPORT 0x02 + +#define WACOM_QUERY_REPORT 3 #define WACOM_QUERY_SIZE 19 struct wacom_features { @@ -50,23 +57,24 @@ struct wacom_i2c { static int wacom_query_device(struct i2c_client *client, struct wacom_features *features) { - int ret; - u8 cmd1[] = { WACOM_CMD_QUERY0, WACOM_CMD_QUERY1, - WACOM_CMD_QUERY2, WACOM_CMD_QUERY3 }; - u8 cmd2[] = { WACOM_CMD_THROW0, WACOM_CMD_THROW1 }; + u8 get_query_data_cmd[] = { + WACOM_COMMAND_LSB, + WACOM_COMMAND_MSB, + REPORT_FEATURE | WACOM_QUERY_REPORT, + OPCODE_GET_REPORT, + WACOM_DATA_LSB, + WACOM_DATA_MSB, + }; u8 data[WACOM_QUERY_SIZE]; + int ret; + struct i2c_msg msgs[] = { + /* Request reading of feature ReportID: 3 (Pen Query Data) */ { .addr = client->addr, .flags = 0, - .len = sizeof(cmd1), - .buf = cmd1, - }, - { - .addr = client->addr, - .flags = 0, - .len = sizeof(cmd2), - .buf = cmd2, + .len = sizeof(get_query_data_cmd), + .buf = get_query_data_cmd, }, { .addr = client->addr, |