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| author |   Sven Van Asbroeck <thesven73@gmail.com> | 2019-11-12 15:44:10 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-11-12 15:53:33 -0800 |
| commit | cc12ba1872c6bf05b5f177fae5082bcbea335f2b (patch) | |
| tree | 189f75f69451c6fa607f93bf4d41da3d88afeff6 /drivers | |
| parent | Input: ili210x - add resolution to chip operations structure (diff) | |
| download | linux-dev-cc12ba1872c6bf05b5f177fae5082bcbea335f2b.tar.xz linux-dev-cc12ba1872c6bf05b5f177fae5082bcbea335f2b.zip | |
Input: ili210x - optionally show calibrate sysfs attribute
Only show the 'calibrate' sysfs attribute on chip flavours
which support calibration by writing to a calibration register.
Do this by adding a flag to the chip operations structure.
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Link: https://lore.kernel.org/r/20191112210148.3535-2-TheSven73@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/ili210x.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index 6861ac4355b2..4a17096e83e1 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -33,6 +33,7 @@ struct ili2xxx_chip { bool (*continue_polling)(const u8 *data, bool touch); unsigned int max_touches; unsigned int resolution; + bool has_calibrate_reg; }; struct ili210x { @@ -103,6 +104,7 @@ static const struct ili2xxx_chip ili210x_chip = { .parse_touch_data = ili210x_touchdata_to_coords, .continue_polling = ili210x_check_continue_polling, .max_touches = 2, + .has_calibrate_reg = true, }; static int ili211x_read_touch_data(struct i2c_client *client, u8 *data) @@ -228,6 +230,7 @@ static const struct ili2xxx_chip ili251x_chip = { .parse_touch_data = ili251x_touchdata_to_coords, .continue_polling = ili251x_check_continue_polling, .max_touches = 10, + .has_calibrate_reg = true, }; static bool ili210x_report_events(struct ili210x *priv, u8 *touchdata) @@ -311,8 +314,19 @@ static struct attribute *ili210x_attributes[] = { NULL, }; +static umode_t ili210x_calibrate_visible(struct kobject *kobj, + struct attribute *attr, int index) +{ + struct device *dev = kobj_to_dev(kobj); + struct i2c_client *client = to_i2c_client(dev); + struct ili210x *priv = i2c_get_clientdata(client); + + return priv->chip->has_calibrate_reg; +} + static const struct attribute_group ili210x_attr_group = { .attrs = ili210x_attributes, + .is_visible = ili210x_calibrate_visible, }; static void ili210x_power_down(void *data) |