Commit cc12ba18 authored by Sven Van Asbroeck's avatar Sven Van Asbroeck Committed by Dmitry Torokhov
Browse files

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: default avatarSven Van Asbroeck <TheSven73@gmail.com>
Link: https://lore.kernel.org/r/20191112210148.3535-2-TheSven73@gmail.com


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent b32fbeae

drivers/input/touchscreen/ili210x.c

+14 −0
Original line number Diff line number Diff line
@@ -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)

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