Input: imx_keypad - add device tree support
This patch adds device tree support for imx keypad driver.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/keyboard/imx_keypad.c b/drivers/input/keyboard/imx_keypad.c
index 6d150e3..98f9113 100644
--- a/drivers/input/keyboard/imx_keypad.c
+++ b/drivers/input/keyboard/imx_keypad.c
@@ -20,6 +20,7 @@
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/timer.h>
@@ -414,15 +415,23 @@
return -EIO;
}
+#ifdef CONFIG_OF
+static struct of_device_id imx_keypad_of_match[] = {
+ { .compatible = "fsl,imx21-kpp", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_keypad_of_match);
+#endif
+
static int imx_keypad_probe(struct platform_device *pdev)
{
const struct matrix_keymap_data *keymap_data = pdev->dev.platform_data;
struct imx_keypad *keypad;
struct input_dev *input_dev;
struct resource *res;
- int irq, error, i;
+ int irq, error, i, row, col;
- if (keymap_data == NULL) {
+ if (!keymap_data && !pdev->dev.of_node) {
dev_err(&pdev->dev, "no keymap defined\n");
return -EINVAL;
}
@@ -480,22 +489,6 @@
goto failed_unmap;
}
- /* Search for rows and cols enabled */
- for (i = 0; i < keymap_data->keymap_size; i++) {
- keypad->rows_en_mask |= 1 << KEY_ROW(keymap_data->keymap[i]);
- keypad->cols_en_mask |= 1 << KEY_COL(keymap_data->keymap[i]);
- }
-
- if (keypad->rows_en_mask > ((1 << MAX_MATRIX_KEY_ROWS) - 1) ||
- keypad->cols_en_mask > ((1 << MAX_MATRIX_KEY_COLS) - 1)) {
- dev_err(&pdev->dev,
- "invalid key data (too many rows or colums)\n");
- error = -EINVAL;
- goto failed_clock_put;
- }
- dev_dbg(&pdev->dev, "enabled rows mask: %x\n", keypad->rows_en_mask);
- dev_dbg(&pdev->dev, "enabled cols mask: %x\n", keypad->cols_en_mask);
-
/* Init the Input device */
input_dev->name = pdev->name;
input_dev->id.bustype = BUS_HOST;
@@ -512,6 +505,19 @@
goto failed_clock_put;
}
+ /* Search for rows and cols enabled */
+ for (row = 0; row < MAX_MATRIX_KEY_ROWS; row++) {
+ for (col = 0; col < MAX_MATRIX_KEY_COLS; col++) {
+ i = MATRIX_SCAN_CODE(row, col, MATRIX_ROW_SHIFT);
+ if (keypad->keycodes[i] != KEY_RESERVED) {
+ keypad->rows_en_mask |= 1 << row;
+ keypad->cols_en_mask |= 1 << col;
+ }
+ }
+ }
+ dev_dbg(&pdev->dev, "enabled rows mask: %x\n", keypad->rows_en_mask);
+ dev_dbg(&pdev->dev, "enabled cols mask: %x\n", keypad->cols_en_mask);
+
__set_bit(EV_REP, input_dev->evbit);
input_set_capability(input_dev, EV_MSC, MSC_SCAN);
input_set_drvdata(input_dev, keypad);
@@ -631,6 +637,7 @@
.name = "imx-keypad",
.owner = THIS_MODULE,
.pm = &imx_kbd_pm_ops,
+ .of_match_table = of_match_ptr(imx_keypad_of_match),
},
.probe = imx_keypad_probe,
.remove = imx_keypad_remove,