[PATCH v2] Input: wacom_i2c - Clean up the query device fields
From: Alistair Francis <hidden>
Date: 2021-11-18 12:35:56
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
Improve the query device fields to be more verbose. Signed-off-by: Alistair Francis <redacted> --- drivers/input/touchscreen/wacom_i2c.c | 45 ++++++++++++++++----------- 1 file changed, 27 insertions(+), 18 deletions(-)
diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
index fe4ea6204a4e..50d159919bd1 100644
--- a/drivers/input/touchscreen/wacom_i2c.c
+++ b/drivers/input/touchscreen/wacom_i2c.c@@ -23,13 +23,20 @@ #define WACOM_BARREL_SWITCH_2 BIT(4) #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 +// Registers +#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 {
@@ -51,22 +58,24 @@ 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 data[WACOM_QUERY_SIZE]; + + 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, + }; + 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,
--
2.31.1