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| author |   Jeff LaBundy <jeff@labundy.com> | 2021-03-21 21:01:35 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-03-25 11:14:09 -0700 |
| commit | 40c3efdc0b77d3f5298c9ce4fcb029da30f887e5 (patch) | |
| tree | fcf71b5249f322422dfad9d8025cbceff3ab57e7 /drivers/input/touchscreen/iqs5xx.c | |
| parent | Input: iqs5xx - update vendor's URL (diff) | |
| download | linux-dev-40c3efdc0b77d3f5298c9ce4fcb029da30f887e5.tar.xz linux-dev-40c3efdc0b77d3f5298c9ce4fcb029da30f887e5.zip | |
Input: iqs5xx - optimize axis definition and validation
Set the maximum ABS_MT_PRESSURE value and use the existing U16_MAX
definition instead of a magic number to validate ABS_MT_POSITION_X
and ABS_MT_POSITION_Y.
Also use input_set_abs_params() rather than input_abs_set_max() to
avoid having to call input_set_capability() separately.
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/20210313191236.4366-3-jeff@labundy.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/iqs5xx.c')
| -rw-r--r-- | drivers/input/touchscreen/iqs5xx.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/drivers/input/touchscreen/iqs5xx.c b/drivers/input/touchscreen/iqs5xx.c index 403e251a5e7d..2a4e048f1400 100644 --- a/drivers/input/touchscreen/iqs5xx.c +++ b/drivers/input/touchscreen/iqs5xx.c @@ -32,7 +32,6 @@ #define IQS5XX_NUM_RETRIES 10 #define IQS5XX_NUM_CONTACTS 5 #define IQS5XX_WR_BYTES_MAX 2 -#define IQS5XX_XY_RES_MAX 0xFFFE #define IQS5XX_PROD_NUM_IQS550 40 #define IQS5XX_PROD_NUM_IQS572 58 @@ -504,10 +503,6 @@ static int iqs5xx_axis_init(struct i2c_client *client) input->open = iqs5xx_open; input->close = iqs5xx_close; - input_set_capability(input, EV_ABS, ABS_MT_POSITION_X); - input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y); - input_set_capability(input, EV_ABS, ABS_MT_PRESSURE); - input_set_drvdata(input, iqs5xx); iqs5xx->input = input; } @@ -520,26 +515,29 @@ static int iqs5xx_axis_init(struct i2c_client *client) if (error) return error; - input_abs_set_max(iqs5xx->input, ABS_MT_POSITION_X, max_x); - input_abs_set_max(iqs5xx->input, ABS_MT_POSITION_Y, max_y); + input_set_abs_params(iqs5xx->input, ABS_MT_POSITION_X, 0, max_x, 0, 0); + input_set_abs_params(iqs5xx->input, ABS_MT_POSITION_Y, 0, max_y, 0, 0); + input_set_abs_params(iqs5xx->input, ABS_MT_PRESSURE, 0, U16_MAX, 0, 0); touchscreen_parse_properties(iqs5xx->input, true, prop); - if (prop->max_x > IQS5XX_XY_RES_MAX) { - dev_err(&client->dev, "Invalid maximum x-coordinate: %u > %u\n", - prop->max_x, IQS5XX_XY_RES_MAX); + /* + * The device reserves 0xFFFF for coordinates that correspond to slots + * which are not in a state of touch. + */ + if (prop->max_x >= U16_MAX || prop->max_y >= U16_MAX) { + dev_err(&client->dev, "Invalid touchscreen size: %u*%u\n", + prop->max_x, prop->max_y); return -EINVAL; - } else if (prop->max_x != max_x) { + } + + if (prop->max_x != max_x) { error = iqs5xx_write_word(client, IQS5XX_X_RES, prop->max_x); if (error) return error; } - if (prop->max_y > IQS5XX_XY_RES_MAX) { - dev_err(&client->dev, "Invalid maximum y-coordinate: %u > %u\n", - prop->max_y, IQS5XX_XY_RES_MAX); - return -EINVAL; - } else if (prop->max_y != max_y) { + if (prop->max_y != max_y) { error = iqs5xx_write_word(client, IQS5XX_Y_RES, prop->max_y); if (error) return error; |