From: Jeff LaBundy <jeff@labundy.com>
To: dmitry.torokhov@gmail.com, robh+dt@kernel.org
Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org,
Jeff LaBundy <jeff@labundy.com>
Subject: [PATCH 2/9] Input: iqs5xx - optimize axis definition and validation
Date: Thu, 4 Mar 2021 22:12:29 -0600 [thread overview]
Message-ID: <20210305041236.3489-3-jeff@labundy.com> (raw)
In-Reply-To: <20210305041236.3489-1-jeff@labundy.com>
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>
---
drivers/input/touchscreen/iqs5xx.c | 30 ++++++++++++++----------------
1 file 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;
--
2.17.1
next prev parent reply other threads:[~2021-03-05 4:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 4:12 [PATCH 0/9] Input: iqs5xx - more enhancements and optimizations Jeff LaBundy
2021-03-05 4:12 ` [PATCH 1/9] Input: iqs5xx - update vendor's URL Jeff LaBundy
2021-03-05 4:12 ` Jeff LaBundy [this message]
2021-03-05 4:12 ` [PATCH 3/9] Input: iqs5xx - expose firmware revision to user space Jeff LaBundy
2021-03-05 4:12 ` [PATCH 4/9] Input: iqs5xx - remove superfluous revision validation Jeff LaBundy
2021-03-05 4:12 ` [PATCH 5/9] Input: iqs5xx - close bootloader using hardware reset Jeff LaBundy
2021-03-05 4:12 ` [PATCH 6/9] Input: iqs5xx - prevent interrupt storm during removal Jeff LaBundy
2021-03-05 4:12 ` [PATCH 7/9] Input: iqs5xx - suspend or resume regardless of users Jeff LaBundy
2021-03-05 4:12 ` [PATCH 8/9] Input: iqs5xx - make reset GPIO optional Jeff LaBundy
2021-03-05 4:12 ` [PATCH 9/9] dt-bindings: input: iqs5xx: Convert to YAML Jeff LaBundy
2021-03-08 21:46 ` Rob Herring
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