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Input: mt6779-keypad - prepare double keys support with calc_row_col

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The MediaTek keypad can operate in two modes: single key or double key.
The driver only supports single key mode. In double key mode, the
row/column calculation based on the key is different.

Add a calc_row_col function pointer which will be different based on
single/double key mode.

No functional change.

Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220720-mt8183-keypad-v2-4-6d42c357cb76@baylibre.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Mattijs Korpershoek
2022-07-26 14:56:09 +02:00
committed by Dmitry Torokhov
parent 24f9cde381
commit e76be36ad9
1 changed files with 13 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/input/keyboard/mt6779-keypad.c
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@@ -31,6 +31,8 @@ struct mt6779_keypad {
struct clk *clk;
u32 n_rows;
u32 n_cols;
void (*calc_row_col)(unsigned int key,
unsigned int *row, unsigned int *col);
DECLARE_BITMAP(keymap_state, MTK_KPD_NUM_BITS);
};
@@ -67,8 +69,7 @@ static irqreturn_t mt6779_keypad_irq_handler(int irq, void *dev_id)
continue;
key = bit_nr / 32 * 16 + bit_nr % 32;
row = key / 9;
col = key % 9;
keypad->calc_row_col(key, &row, &col);
scancode = MATRIX_SCAN_CODE(row, col, row_shift);
/* 1: not pressed, 0: pressed */
@@ -94,6 +95,14 @@ static void mt6779_keypad_clk_disable(void *data)
clk_disable_unprepare(data);
}
static void mt6779_keypad_calc_row_col_single(unsigned int key,
unsigned int *row,
unsigned int *col)
{
*row = key / 9;
*col = key % 9;
}
static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
{
struct mt6779_keypad *keypad;
@@ -148,6 +157,8 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
return -EINVAL;
}
keypad->calc_row_col = mt6779_keypad_calc_row_col_single;
wakeup = device_property_read_bool(&pdev->dev, "wakeup-source");
dev_dbg(&pdev->dev, "n_row=%d n_col=%d debounce=%d\n",