[PATCH 6.6.y 5/6] Input: matrix_keypad - remove support for clustered interrupt

[Sasha Levin <sashal@kernel.org>]

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

[ Upstream commit 5080f62adb126e28d316298505272efea0aed81a ]

There are no users of this functionality in the mainline kernel (it was
only available to boards using platform data and not device tree).
Remove it to simplify the code.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240805014710.1961677-2-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Stable-dep-of: 1527451f87df ("Revert "Input: matrix_keypad - force switch rows to input mode"")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/keyboard/matrix_keypad.c | 61 ++++++++++----------------
 1 file changed, 22 insertions(+), 39 deletions(-)

diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 695c03e075b56..9e6837217f441 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -29,7 +29,6 @@ struct matrix_keypad {
 	unsigned int row_shift;
 
 	unsigned int row_irqs[MATRIX_MAX_ROWS];
-	unsigned int num_row_irqs;
 	DECLARE_BITMAP(wakeup_enabled_irqs, MATRIX_MAX_ROWS);
 
 	uint32_t last_key_state[MATRIX_MAX_COLS];
@@ -89,7 +88,7 @@ static void enable_row_irqs(struct matrix_keypad *keypad)
 {
 	int i;
 
-	for (i = 0; i < keypad->num_row_irqs; i++)
+	for (i = 0; i < keypad->pdata->num_row_gpios; i++)
 		enable_irq(keypad->row_irqs[i]);
 }
 
@@ -97,7 +96,7 @@ static void disable_row_irqs(struct matrix_keypad *keypad)
 {
 	int i;
 
-	for (i = 0; i < keypad->num_row_irqs; i++)
+	for (i = 0; i < keypad->pdata->num_row_gpios; i++)
 		disable_irq_nosync(keypad->row_irqs[i]);
 }
 
@@ -226,7 +225,8 @@ static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
 {
 	int i;
 
-	for_each_clear_bit(i, keypad->wakeup_enabled_irqs, keypad->num_row_irqs)
+	for_each_clear_bit(i, keypad->wakeup_enabled_irqs,
+			   keypad->pdata->num_row_gpios)
 		if (enable_irq_wake(keypad->row_irqs[i]) == 0)
 			__set_bit(i, keypad->wakeup_enabled_irqs);
 }
@@ -235,7 +235,8 @@ static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)
 {
 	int i;
 
-	for_each_set_bit(i, keypad->wakeup_enabled_irqs, keypad->num_row_irqs) {
+	for_each_set_bit(i, keypad->wakeup_enabled_irqs,
+			 keypad->pdata->num_row_gpios) {
 		disable_irq_wake(keypad->row_irqs[i]);
 		__clear_bit(i, keypad->wakeup_enabled_irqs);
 	}
@@ -303,48 +304,30 @@ static int matrix_keypad_init_gpio(struct platform_device *pdev,
 		gpio_direction_input(pdata->row_gpios[i]);
 	}
 
-	if (pdata->clustered_irq > 0) {
+	for (i = 0; i < pdata->num_row_gpios; i++) {
+		irq = gpio_to_irq(pdata->row_gpios[i]);
+		if (irq < 0) {
+			err = irq;
+			dev_err(&pdev->dev,
+				"Unable to convert GPIO line %i to irq: %d\n",
+				pdata->row_gpios[i], err);
+			return err;
+		}
+
 		err = devm_request_any_context_irq(&pdev->dev,
-				pdata->clustered_irq,
+				irq,
 				matrix_keypad_interrupt,
-				pdata->clustered_irq_flags,
+				IRQF_TRIGGER_RISING |
+					IRQF_TRIGGER_FALLING,
 				"matrix-keypad", keypad);
 		if (err < 0) {
 			dev_err(&pdev->dev,
-				"Unable to acquire clustered interrupt\n");
+				"Unable to acquire interrupt for GPIO line %i\n",
+				pdata->row_gpios[i]);
 			return err;
 		}
 
-		keypad->row_irqs[0] = pdata->clustered_irq;
-		keypad->num_row_irqs = 1;
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			irq = gpio_to_irq(pdata->row_gpios[i]);
-			if (irq < 0) {
-				err = irq;
-				dev_err(&pdev->dev,
-					"Unable to convert GPIO line %i to irq: %d\n",
-					pdata->row_gpios[i], err);
-				return err;
-			}
-
-			err = devm_request_any_context_irq(&pdev->dev,
-					irq,
-					matrix_keypad_interrupt,
-					IRQF_TRIGGER_RISING |
-						IRQF_TRIGGER_FALLING,
-					"matrix-keypad", keypad);
-			if (err < 0) {
-				dev_err(&pdev->dev,
-					"Unable to acquire interrupt for GPIO line %i\n",
-					pdata->row_gpios[i]);
-				return err;
-			}
-
-			keypad->row_irqs[i] = irq;
-		}
-
-		keypad->num_row_irqs = pdata->num_row_gpios;
+		keypad->row_irqs[i] = irq;
 	}
 
 	/* initialized as disabled - enabled by input->open */
-- 
2.53.0