Signed-off-by: Alban Bedel <alban.bedel@xxxxxxxxxxxxxxxxx>
---
.../devicetree/bindings/input/tca8418_keypad.txt | 8 +++
drivers/input/keyboard/tca8418_keypad.c | 54 +++++++++++++-------
2 files changed, 44 insertions(+), 18 deletions(-)
create mode 100644 Documentation/devicetree/bindings/input/tca8418_keypad.txt
diff --git a/Documentation/devicetree/bindings/input/tca8418_keypad.txt b/Documentation/devicetree/bindings/input/tca8418_keypad.txt
new file mode 100644
index 0000000..2a1538f
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/tca8418_keypad.txt
@@ -0,0 +1,8 @@
+
+Required properties:
+- compatible: "ti,tca8418"
+- reg: the I2C address
+- interrupts: IRQ line number, should trigger on falling edge
+- keypad,num-rows: The number of rows
+- keypad,num-columns: The number of columns
+- linux,keymap: Keys definitions, see keypad-matrix.
diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c
index 893869b..fc9cc94 100644
--- a/drivers/input/keyboard/tca8418_keypad.c
+++ b/drivers/input/keyboard/tca8418_keypad.c
@@ -35,6 +35,7 @@
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/tca8418_keypad.h>
+#include <linux/of.h>
/* TCA8418 hardware limits */
#define TCA8418_MAX_ROWS 8
@@ -116,6 +117,12 @@ static const struct i2c_device_id tca8418_id[] = {
};
MODULE_DEVICE_TABLE(i2c, tca8418_id);
+static const struct of_device_id tca8418_dt_ids[] __devinitconst = {
+ { .compatible = "ti,tca8418", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tca8418_dt_ids);
+
struct tca8418_keypad {
unsigned int rows;
unsigned int cols;
@@ -277,25 +284,36 @@ static int __devinit tca8418_keypad_probe(struct i2c_client *client,
client->dev.platform_data;
struct tca8418_keypad *keypad_data;
struct input_dev *input;
+ const struct matrix_keymap_data *keymap_data = NULL;
+ u32 rows = 0, cols = 0;
+ bool rep = false;
+ bool irq_is_gpio = false;
int error, row_shift, max_keys;
/* Copy the platform data */
- if (!pdata) {
- dev_dbg(&client->dev, "no platform data\n");
- return -EINVAL;
- }
-
- if (!pdata->keymap_data) {
- dev_err(&client->dev, "no keymap data defined\n");
- return -EINVAL;
+ if (pdata) {
+ if (!pdata->keymap_data) {
+ dev_err(&client->dev, "no keymap data defined\n");
+ return -EINVAL;
+ }
+ keymap_data = pdata->keymap_data;
+ rows = pdata->rows;
+ cols = pdata->cols;
+ rep = pdata->rep;
+ irq_is_gpio = pdata->irq_is_gpio;
+ } else {
+ struct device_node *np = client->dev.of_node;
+ of_property_read_u32(np, "keypad,num-rows", &rows);
+ of_property_read_u32(np, "keypad,num-columns", &cols);
+ rep = of_property_read_bool(np, "keypad,autorepeat");
}
- if (!pdata->rows || pdata->rows > TCA8418_MAX_ROWS) {
+ if (!rows || rows > TCA8418_MAX_ROWS) {
dev_err(&client->dev, "invalid rows\n");
return -EINVAL;
}
- if (!pdata->cols || pdata->cols > TCA8418_MAX_COLS) {
+ if (!cols || cols > TCA8418_MAX_COLS) {
dev_err(&client->dev, "invalid columns\n");
return -EINVAL;
}
@@ -307,8 +325,8 @@ static int __devinit tca8418_keypad_probe(struct i2c_client *client,
return -ENODEV;
}
- row_shift = get_count_order(pdata->cols);
- max_keys = pdata->rows << row_shift;
+ row_shift = get_count_order(cols);
+ max_keys = rows << row_shift;
/* Allocate memory for keypad_data, keymap and input device */
keypad_data = kzalloc(sizeof(*keypad_data) +
@@ -316,8 +334,8 @@ static int __devinit tca8418_keypad_probe(struct i2c_client *client,
if (!keypad_data)
return -ENOMEM;
- keypad_data->rows = pdata->rows;
- keypad_data->cols = pdata->cols;
+ keypad_data->rows = rows;
+ keypad_data->cols = cols;
keypad_data->client = client;
keypad_data->row_shift = row_shift;
@@ -342,21 +360,20 @@ static int __devinit tca8418_keypad_probe(struct i2c_client *client,
input->id.product = 0x001;
input->id.version = 0x0001;
- error = matrix_keypad_build_keymap(pdata->keymap_data, NULL,
- pdata->rows, pdata->cols,
+ error = matrix_keypad_build_keymap(keymap_data, NULL, rows, cols,
keypad_data->keymap, input);
if (error) {
dev_dbg(&client->dev, "Failed to build keymap\n");
goto fail2;
}
- if (pdata->rep)
+ if (rep)
__set_bit(EV_REP, input->evbit);
input_set_capability(input, EV_MSC, MSC_SCAN);
input_set_drvdata(input, keypad_data);
- if (pdata->irq_is_gpio)
+ if (irq_is_gpio)
client->irq = gpio_to_irq(client->irq);
error = request_threaded_irq(client->irq, NULL, tca8418_irq_handler,
@@ -406,6 +423,7 @@ static struct i2c_driver tca8418_keypad_driver = {
.driver = {
.name = TCA8418_NAME,
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tca8418_dt_ids),
},
.probe = tca8418_keypad_probe,
.remove = __devexit_p(tca8418_keypad_remove),
--
1.7.0.4
--
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