[PATCH 2/4] pinctrl: exynos: add support for multiple pin banks

[Dzmitry Sankouski <dsankouski@gmail.com>]

Iterate all pin banks to find a pin

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
---
 drivers/pinctrl/exynos/pinctrl-exynos.c | 28 +++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/exynos/pinctrl-exynos.c b/drivers/pinctrl/exynos/pinctrl-exynos.c
index 2640c8fcef..898185479b 100644
--- a/drivers/pinctrl/exynos/pinctrl-exynos.c
+++ b/drivers/pinctrl/exynos/pinctrl-exynos.c
@@ -5,6 +5,7 @@
  * Thomas Abraham <thomas.ab@samsung.com>
  */
 
+#include <log.h>
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
@@ -38,9 +39,9 @@ static unsigned long pin_to_bank_base(struct udevice *dev, const char *pin_name,
 						u32 *pin)
 {
 	struct exynos_pinctrl_priv *priv = dev_get_priv(dev);
-	const struct samsung_pin_ctrl *pin_ctrl = priv->pin_ctrl;
-	const struct samsung_pin_bank_data *bank_data = pin_ctrl->pin_banks;
-	u32 nr_banks = pin_ctrl->nr_banks, idx = 0;
+	const struct samsung_pin_ctrl *pin_ctrl_array = priv->pin_ctrl;
+	const struct samsung_pin_bank_data *bank_data;
+	u32 nr_banks, pin_ctrl_idx = 0, idx = 0, bank_base;
 	char bank[10];
 
 	/*
@@ -55,11 +56,26 @@ static unsigned long pin_to_bank_base(struct udevice *dev, const char *pin_name,
 	*pin = pin_name[++idx] - '0';
 
 	/* lookup the pin bank data using the pin bank name */
-	for (idx = 0; idx < nr_banks; idx++)
-		if (!strcmp(bank, bank_data[idx].name))
+	while (true) {
+		const struct samsung_pin_ctrl *pin_ctrl = &pin_ctrl_array[pin_ctrl_idx];
+
+		nr_banks = pin_ctrl->nr_banks;
+		if (!nr_banks)
 			break;
 
-	return priv->base + bank_data[idx].offset;
+		bank_data = pin_ctrl->pin_banks;
+		for (idx = 0; idx < nr_banks; idx++) {
+			debug("pinctrl[%d] bank_data[%d] name is: %s\n",
+					pin_ctrl_idx, idx, bank_data[idx].name);
+			if (!strcmp(bank, bank_data[idx].name)) {
+				bank_base = priv->base + bank_data[idx].offset;
+				break;
+			}
+		}
+		pin_ctrl_idx++;
+	}
+
+	return bank_base;
 }
 
 /**
-- 
2.20.1