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| author |   Alistair Francis <alistair@alistair23.me> | 2021-11-18 11:27:12 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-11-29 00:15:39 -0800 |
| commit | fafc66387dc069140e52739c0c86c8169d44c2dc (patch) | |
| tree | 5f8a6ca573d8179ac38df1f34070aed43f116d3c /drivers/input/touchscreen/wacom_i2c.c | |
| parent | Input: palmas-pwrbutton - use bitfield helpers (diff) | |
| download | linux-dev-fafc66387dc069140e52739c0c86c8169d44c2dc.tar.xz linux-dev-fafc66387dc069140e52739c0c86c8169d44c2dc.zip | |
Input: wacom_i2c - clean up the query device fields
Improve the query device fields to be more verbose.
Signed-off-by: Alistair Francis <alistair@alistair23.me>
Link: https://lore.kernel.org/r/20211118123545.102872-1-alistair@alistair23.me
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to '')
| -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, |