[PATCH 3/3] Input: of_touchscreen - switch to using device properties
From: Dmitry Torokhov
Date: Mon Jul 06 2015 - 20:28:24 EST
Let's switch form OF to device properties so that common parsing code could
work not only on device tree but also on ACPI-based platforms.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
drivers/input/touchscreen/Kconfig | 4 +--
drivers/input/touchscreen/Makefile | 2 +-
drivers/input/touchscreen/edt-ft5x06.c | 2 +-
drivers/input/touchscreen/of_touchscreen.c | 56 ++++++++++++++++--------------
drivers/input/touchscreen/tsc2005.c | 2 +-
include/linux/input/touchscreen.h | 11 ++----
6 files changed, 37 insertions(+), 40 deletions(-)
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 2dc9d62..38d0f99 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -11,9 +11,9 @@ menuconfig INPUT_TOUCHSCREEN
if INPUT_TOUCHSCREEN
-config OF_TOUCHSCREEN
+config TOUCHSCREEN_PROPERTIES
def_tristate INPUT
- depends on INPUT && OF
+ depends on INPUT
config TOUCHSCREEN_88PM860X
tristate "Marvell 88PM860x touchscreen"
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index fa3d33b..c85aae2 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -6,7 +6,7 @@
wm97xx-ts-y := wm97xx-core.o
-obj-$(CONFIG_OF_TOUCHSCREEN) += of_touchscreen.o
+obj-$(CONFIG_TOUCHSCREEN_PROPERTIES) += of_touchscreen.o
obj-$(CONFIG_TOUCHSCREEN_88PM860X) += 88pm860x-ts.o
obj-$(CONFIG_TOUCHSCREEN_AD7877) += ad7877.o
obj-$(CONFIG_TOUCHSCREEN_AD7879) += ad7879.o
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 394b1de..8f8f319 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -1041,7 +1041,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
0, tsdata->num_y * 64 - 1, 0, 0);
if (!pdata)
- touchscreen_parse_of_params(input, true);
+ touchscreen_parse_properties(input, true);
error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, INPUT_MT_DIRECT);
if (error) {
diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
index 50bc0f2..bb6f2fe 100644
--- a/drivers/input/touchscreen/of_touchscreen.c
+++ b/drivers/input/touchscreen/of_touchscreen.c
@@ -9,12 +9,12 @@
*
*/
-#include <linux/of.h>
+#include <linux/property.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
-static bool touchscreen_get_prop_u32(struct device_node *np,
+static bool touchscreen_get_prop_u32(struct device *dev,
const char *property,
unsigned int default_value,
unsigned int *value)
@@ -22,7 +22,7 @@ static bool touchscreen_get_prop_u32(struct device_node *np,
u32 val;
int error;
- error = of_property_read_u32(np, property, &val);
+ error = device_property_read_u32(dev, property, &val);
if (error) {
*value = default_value;
return false;
@@ -51,54 +51,58 @@ static void touchscreen_set_params(struct input_dev *dev,
}
/**
- * touchscreen_parse_of_params - parse common touchscreen DT properties
- * @dev: device that should be parsed
+ * touchscreen_parse_properties - parse common touchscreen DT properties
+ * @input: input device that should be parsed
+ * @multitouch: specifies whether parsed properties should be applied to
+ * single-touch or multi-touch axes
*
* This function parses common DT properties for touchscreens and setups the
- * input device accordingly. The function keeps previously setuped default
+ * input device accordingly. The function keeps previously set up default
* values if no value is specified via DT.
*/
-void touchscreen_parse_of_params(struct input_dev *dev, bool multitouch)
+void touchscreen_parse_properties(struct input_dev *input, bool multitouch)
{
- struct device_node *np = dev->dev.parent->of_node;
+ struct device *dev = input->dev.parent;
unsigned int axis;
unsigned int maximum, fuzz;
bool data_present;
- input_alloc_absinfo(dev);
- if (!dev->absinfo)
+ input_alloc_absinfo(input);
+ if (!input->absinfo)
return;
axis = multitouch ? ABS_MT_POSITION_X : ABS_X;
- data_present = touchscreen_get_prop_u32(np, "touchscreen-size-x",
- input_abs_get_max(dev,
+ data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-x",
+ input_abs_get_max(input,
axis) + 1,
&maximum) |
- touchscreen_get_prop_u32(np, "touchscreen-fuzz-x",
- input_abs_get_fuzz(dev, axis),
+ touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
+ input_abs_get_fuzz(input, axis),
&fuzz);
if (data_present)
- touchscreen_set_params(dev, axis, maximum - 1, fuzz);
+ touchscreen_set_params(input, axis, maximum - 1, fuzz);
axis = multitouch ? ABS_MT_POSITION_Y : ABS_Y;
- data_present = touchscreen_get_prop_u32(np, "touchscreen-size-y",
- input_abs_get_max(dev,
+ data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-y",
+ input_abs_get_max(input,
axis) + 1,
&maximum) |
- touchscreen_get_prop_u32(np, "touchscreen-fuzz-y",
- input_abs_get_fuzz(dev, axis),
+ touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
+ input_abs_get_fuzz(input, axis),
&fuzz);
if (data_present)
- touchscreen_set_params(dev, axis, maximum - 1, fuzz);
+ touchscreen_set_params(input, axis, maximum - 1, fuzz);
axis = multitouch ? ABS_MT_PRESSURE : ABS_PRESSURE;
- data_present = touchscreen_get_prop_u32(np, "touchscreen-max-pressure",
- input_abs_get_max(dev, axis),
+ data_present = touchscreen_get_prop_u32(dev,
+ "touchscreen-max-pressure",
+ input_abs_get_max(input, axis),
&maximum) |
- touchscreen_get_prop_u32(np, "touchscreen-fuzz-pressure",
- input_abs_get_fuzz(dev, axis),
+ touchscreen_get_prop_u32(dev,
+ "touchscreen-fuzz-pressure",
+ input_abs_get_fuzz(input, axis),
&fuzz);
if (data_present)
- touchscreen_set_params(dev, axis, maximum, fuzz);
+ touchscreen_set_params(input, axis, maximum, fuzz);
}
-EXPORT_SYMBOL(touchscreen_parse_of_params);
+EXPORT_SYMBOL(touchscreen_parse_properties);
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
index d8c025b..aaf94752 100644
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -709,7 +709,7 @@ static int tsc2005_probe(struct spi_device *spi)
input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0);
if (np)
- touchscreen_parse_of_params(input_dev, false);
+ touchscreen_parse_properties(input_dev, false);
input_dev->open = tsc2005_open;
input_dev->close = tsc2005_close;
diff --git a/include/linux/input/touchscreen.h b/include/linux/input/touchscreen.h
index eecc9ea..c91e137 100644
--- a/include/linux/input/touchscreen.h
+++ b/include/linux/input/touchscreen.h
@@ -9,15 +9,8 @@
#ifndef _TOUCHSCREEN_H
#define _TOUCHSCREEN_H
-#include <linux/input.h>
+struct input_dev;
-#ifdef CONFIG_OF
-void touchscreen_parse_of_params(struct input_dev *dev, bool multitouch);
-#else
-static inline void touchscreen_parse_of_params(struct input_dev *dev,
- bool multitouch)
-{
-}
-#endif
+void touchscreen_parse_properties(struct input_dev *dev, bool multitouch);
#endif
--
2.4.3.573.g4eafbef
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