ARM: pxa: mainstone-wm97xx: use gpio lookup table

This driver hardcodes gpio numbers without a header file.
Use lookup tables instead.

Cc: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-input@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 14 insertions, 21 deletions

diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c
index f8564b398eb3..87655105ef3a 100644
--- a/drivers/input/touchscreen/mainstone-wm97xx.c
+++ b/drivers/input/touchscreen/mainstone-wm97xx.c
@@ -21,6 +21,7 @@
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/wm97xx.h>
@@ -58,7 +59,7 @@ static const struct continuous cinfo[] = {
 /* continuous speed index */
 static int sp_idx;
 static u16 last, tries;
-static int irq;
+static struct gpio_desc *gpiod_irq;
 
 /*
  * Pen sampling frequency (Hz) in continuous mode.
@@ -194,28 +195,21 @@ static int wm97xx_acc_startup(struct wm97xx *wm)
 	/* IRQ driven touchscreen is used on Palm hardware */
 	if (machine_is_palmt5() || machine_is_palmtx() || machine_is_palmld()) {
 		pen_int = 1;
-		irq = 27;
 		/* There is some obscure mutant of WM9712 interbred with WM9713
 		 * used on Palm HW */
 		wm->variant = WM97xx_WM1613;
-	} else if (machine_is_mainstone() && pen_int)
-		irq = 4;
-
-	if (irq) {
-		ret = gpio_request(irq, "Touchscreen IRQ");
-		if (ret)
-			goto out;
-
-		ret = gpio_direction_input(irq);
-		if (ret) {
-			gpio_free(irq);
-			goto out;
-		}
+	}
+
+	if (pen_int) {
+		gpiod_irq = gpiod_get(wm->dev, "touch", GPIOD_IN);
+		if (IS_ERR(gpiod_irq))
+			pen_int = 0;
+	}
 
-		wm->pen_irq = gpio_to_irq(irq);
+	if (pen_int) {
+		wm->pen_irq = gpiod_to_irq(gpiod_irq);
 		irq_set_irq_type(wm->pen_irq, IRQ_TYPE_EDGE_BOTH);
-	} else /* pen irq not supported */
-		pen_int = 0;
+	}
 
 	/* codec specific irq config */
 	if (pen_int) {
@@ -242,7 +236,6 @@ static int wm97xx_acc_startup(struct wm97xx *wm)
 		}
 	}
 
-out:
 	return ret;
 }
 
@@ -250,8 +243,8 @@ static void wm97xx_acc_shutdown(struct wm97xx *wm)
 {
 	/* codec specific deconfig */
 	if (pen_int) {
-		if (irq)
-			gpio_free(irq);
+		if (gpiod_irq)
+			gpiod_put(gpiod_irq);
 		wm->pen_irq = 0;
 	}
 }