This patch adds the missing support for OF to the adxl34x digital
accelerometer. This is a basic version which supports the main
optional parameters. This implementation copies the default values
to the adxl34x_platform_data structure and overrides the values
that are passed from the device tree.
Signed-off-by: Walter Lozano <walter@xxxxxxxxxxxxxxxxxxxx>
---
drivers/input/misc/adxl34x.c | 108 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 107 insertions(+), 1 deletion(-)
diff --git a/drivers/input/misc/adxl34x.c b/drivers/input/misc/adxl34x.c
index 2b2d02f..b3e06a3 100644
--- a/drivers/input/misc/adxl34x.c
+++ b/drivers/input/misc/adxl34x.c
@@ -16,6 +16,8 @@
#include <linux/workqueue.h>
#include <linux/input/adxl34x.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include "adxl34x.h"
@@ -688,13 +690,113 @@ static void adxl34x_input_close(struct input_dev *input)
mutex_unlock(&ac->mutex);
}
+void adxl34x_parse_dt(struct device *dev, struct adxl34x_platform_data *pdata){
+ if (!dev->of_node)
+ return;
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+
+ memcpy(pdata, &adxl34x_default_init, sizeof(struct adxl34x_platform_data));
+
+ of_property_read_u8(dev->of_node, "adi,tap-axis-control",
+ &pdata->tap_axis_control);
+
+ of_property_read_u8(dev->of_node, "adi,tap-threshold",
+ &pdata->tap_threshold);
+
+ of_property_read_u8(dev->of_node, "adi,tap-duration",
+ &pdata->tap_duration);
+
+ of_property_read_u8(dev->of_node, "adi,tap-latency",
+ &pdata->tap_latency);
+
+ of_property_read_u8(dev->of_node, "adi,tap-window",
+ &pdata->tap_window);
+
+ of_property_read_u8(dev->of_node, "adi,act-axis-control",
+ &pdata->act_axis_control);
+
+ of_property_read_u8(dev->of_node, "adi,activity-threshold",
+ &pdata->activity_threshold);
+
+ of_property_read_u8(dev->of_node, "adi,inactivity-threshold",
+ &pdata->inactivity_threshold);
+
+ of_property_read_u8(dev->of_node, "adi,inactivity-time",
+ &pdata->inactivity_time);
+
+ of_property_read_u8(dev->of_node, "adi,free-fall-threshold",
+ &pdata->free_fall_threshold);
+
+ of_property_read_u8(dev->of_node, "adi,free-fall-time",
+ &pdata->free_fall_time);
+
+ of_property_read_u8(dev->of_node, "adi,data-rate",
+ &pdata->data_rate);
+
+ of_property_read_u8(dev->of_node, "adi,data-range",
+ &pdata->data_range);
+
+ of_property_read_u8(dev->of_node, "adi,low-power-mode",
+ &pdata->low_power_mode);
+
+ of_property_read_u8(dev->of_node, "adi,power-mode",
+ &pdata->power_mode);
+
+ of_property_read_u8(dev->of_node, "adi,fifo-mode",
+ &pdata->fifo_mode);
+
+ of_property_read_u8(dev->of_node, "adi,watermark",
+ &pdata->watermark);
+
+ of_property_read_u8(dev->of_node, "adi,use-int2",
+ &pdata->use_int2);
+
+ of_property_read_u8(dev->of_node, "adi,orientation-enable",
+ &pdata->orientation_enable);
+
+ of_property_read_u8(dev->of_node, "adi,deadzone-angle",
+ &pdata->deadzone_angle);
+
+ of_property_read_u8(dev->of_node, "adi,divisor-length",
+ &pdata->divisor_length);
+
+ of_property_read_u32(dev->of_node, "adi,ev-type",
+ &pdata->ev_type);
+
+ of_property_read_u32(dev->of_node, "adi,ev-code-x",
+ &pdata->ev_code_x);
+
+ of_property_read_u32(dev->of_node, "adi,ev-code-y",
+ &pdata->ev_code_y);
+
+ of_property_read_u32(dev->of_node, "adi,ev-code-z",
+ &pdata->ev_code_z);
+
+ of_property_read_u32_array(dev->of_node, "adi,ev-code-tap",
+ pdata->ev_code_tap, 3);
+
+ of_property_read_u32(dev->of_node, "adi,ev-code-ff",
+ &pdata->ev_code_ff);
+
+ of_property_read_u32(dev->of_node, "adi,ev-code-act-inactivity",
+ &pdata->ev_code_act_inactivity);
+
+ of_property_read_u32_array(dev->of_node, "adi,ev-codes-orient-2d",
+ pdata->ev_codes_orient_2d, 4);
+
+ of_property_read_u32_array(dev->of_node, "adi,ev-codes-orient-3d",
+ pdata->ev_codes_orient_3d, 6);
+
+}
+
struct adxl34x *adxl34x_probe(struct device *dev, int irq,
bool fifo_delay_default,
const struct adxl34x_bus_ops *bops)
{
struct adxl34x *ac;
struct input_dev *input_dev;
- const struct adxl34x_platform_data *pdata;
+ struct adxl34x_platform_data *pdata;
int err, range, i;
unsigned char revid;
@@ -714,6 +816,10 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
ac->fifo_delay = fifo_delay_default;
pdata = dev_get_platdata(dev);
+
+ if (!pdata && dev->of_node)
+ adxl34x_parse_dt(dev, pdata);
+
if (!pdata) {
dev_dbg(dev,
"No platform data: Using default initialization\n");
--
1.7.10.4
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