[PATCH V3 1/5] input: pxa27x-keypad: use matrix_keymap for matrix keyes

Chao Xie
2013-06-18T03:56:14Z

pxa27x-keypad includes matrix keyes. Make use of matrix_keymap
for the matrix keyes.

Signed-off-by: Chao Xie <chao.xie@marvell.com>
---
drivers/input/keyboard/Kconfig | 1 +
drivers/input/keyboard/pxa27x_keypad.c | 36 +++++++++++++++++---------
include/linux/platform_data/keypad-pxa27x.h | 1 +
3 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 37c3666..706e11b 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -451,6 +451,7 @@ config KEYBOARD_OPENCORES
config KEYBOARD_PXA27x
tristate "PXA27x/PXA3xx keypad support"
depends on PXA27x || PXA3xx || ARCH_MMP
+ select INPUT_MATRIXKMAP
help
Enable support for PXA27x/PXA3xx keypad controller.

diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index b674e7a..947d657 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -118,25 +118,29 @@ struct pxa27x_keypad {
unsigned int direct_key_mask;
};

-static void pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad)
+static int pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad)
{
struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
struct input_dev *input_dev = keypad->input_dev;
unsigned short keycode;
- int i;
+ int ret, i;
+ const struct matrix_keymap_data *keymap_data =
+ pdata ? pdata->matrix_keymap_data : NULL;

- for (i = 0; i < pdata->matrix_key_map_size; i++) {
- unsigned int key = pdata->matrix_key_map[i];
- unsigned int row = KEY_ROW(key);
- unsigned int col = KEY_COL(key);
- unsigned int scancode = MATRIX_SCAN_CODE(row, col,
- MATRIX_ROW_SHIFT);
+ ret = matrix_keypad_build_keymap(keymap_data, NULL,
+ pdata->matrix_key_rows,
+ pdata->matrix_key_cols,
+ keypad->keycodes, input_dev);
+ if (ret)
+ return ret;

- keycode = KEY_VAL(key);
- keypad->keycodes[scancode] = keycode;
- __set_bit(keycode, input_dev->keybit);
- }
+ /*
+ * The keycodes may not only includes matrix key but also the direct
+ * key or rotary key.
+ */
+ input_dev->keycodemax = ARRAY_SIZE(keypad->keycodes);

+ /* For direct key. */
for (i = 0; i < pdata->direct_key_num; i++) {
keycode = pdata->direct_key_map[i];
keypad->keycodes[MAX_MATRIX_KEY_NUM + i] = keycode;
@@ -178,6 +182,8 @@ static void pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad)
}

__clear_bit(KEY_RESERVED, input_dev->keybit);
+
+ return 0;
}

static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad)
@@ -555,7 +561,11 @@ static int pxa27x_keypad_probe(struct platform_device *pdev)
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
input_set_capability(input_dev, EV_MSC, MSC_SCAN);

- pxa27x_keypad_build_keycode(keypad);
+ error = pxa27x_keypad_build_keycode(keypad);
+ if (error) {
+ dev_err(&pdev->dev, "failed to build keycode\n");
+ goto failed_put_clk;
+ }

if ((pdata->enable_rotary0 && keypad->rotary_rel_code[0] != -1) ||
(pdata->enable_rotary1 && keypad->rotary_rel_code[1] != -1)) {
diff --git a/include/linux/platform_data/keypad-pxa27x.h b/include/linux/platform_data/keypad-pxa27x.h
index 5ce8d5e6..0db423b 100644
--- a/include/linux/platform_data/keypad-pxa27x.h
+++ b/include/linux/platform_data/keypad-pxa27x.h
@@ -36,6 +36,7 @@
struct pxa27x_keypad_platform_data {

/* code map for the matrix keys */
+ const struct matrix_keymap_data *matrix_keymap_data;
unsigned int matrix_key_rows;
unsigned int matrix_key_cols;
unsigned int *matrix_key_map;
--
1.7.4.1