linux-kernel - [PATCH] pinctrl: as3722: Set pin to output mode for some function

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Date:	Tue, 7 Jan 2014 14:10:56 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	<linus.walleij@...aro.org>
CC:	<sameo@...ux.intel.com>, <lee.jones@...aro.org>,
	<linux-kernel@...r.kernel.org>, <swarren@...dotorg.org>,
	Mallikarjun Kasoju <mkasoju@...dia.com>,
	Laxman Dewangan <ldewangan@...dia.com>
Subject: [PATCH] pinctrl: as3722: Set pin to output mode for some function

From: Mallikarjun Kasoju <mkasoju@...dia.com>

If pins are used for function output like pwm, clk32k,
power good etc then set it as output mode default.

Signed-off-by: Mallikarjun Kasoju <mkasoju@...dia.com>
Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
---
 drivers/pinctrl/pinctrl-as3722.c |   20 ++++++++++++++++++++
 include/linux/mfd/as3722.h       |    1 +
 2 files changed, 21 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-as3722.c b/drivers/pinctrl/pinctrl-as3722.c
index b80f1e1..92ed4b2 100644
--- a/drivers/pinctrl/pinctrl-as3722.c
+++ b/drivers/pinctrl/pinctrl-as3722.c
@@ -250,6 +250,26 @@ static int as3722_pinctrl_enable(struct pinctrl_dev *pctldev, unsigned function,
 		return ret;
 	}
 	as_pci->gpio_control[group].io_function = function;
+
+	switch (val) {
+	case AS3722_GPIO_IOSF_SD0_OUT:
+	case AS3722_GPIO_IOSF_PWR_GOOD_OUT:
+	case AS3722_GPIO_IOSF_Q32K_OUT:
+	case AS3722_GPIO_IOSF_PWM_OUT:
+	case AS3722_GPIO_IOSF_SD6_LOW_VOLT_LOW:
+		ret = as3722_update_bits(as_pci->as3722, gpio_cntr_reg,
+			AS3722_GPIO_MODE_MASK, AS3722_GPIO_MODE_OUTPUT_VDDH);
+		if (ret < 0) {
+			dev_err(as_pci->dev, "GPIO%d_CTRL update failed %d\n",
+				group, ret);
+			return ret;
+		}
+		as_pci->gpio_control[group].mode_prop =
+				AS3722_GPIO_MODE_OUTPUT_VDDH;
+		break;
+	default:
+		break;
+	}
 	return ret;
 }
 
diff --git a/include/linux/mfd/as3722.h b/include/linux/mfd/as3722.h
index bb9616d..8d43e9f 100644
--- a/include/linux/mfd/as3722.h
+++ b/include/linux/mfd/as3722.h
@@ -316,6 +316,7 @@
 #define AS3722_GPIO_IOSF_GPIO_INTERRUPT_IN		AS3722_GPIO_IOSF_VAL(3)
 #define AS3722_GPIO_IOSF_ISINK_PWM_IN			AS3722_GPIO_IOSF_VAL(4)
 #define AS3722_GPIO_IOSF_VOLTAGE_STBY			AS3722_GPIO_IOSF_VAL(5)
+#define AS3722_GPIO_IOSF_SD0_OUT			AS3722_GPIO_IOSF_VAL(6)
 #define AS3722_GPIO_IOSF_PWR_GOOD_OUT			AS3722_GPIO_IOSF_VAL(7)
 #define AS3722_GPIO_IOSF_Q32K_OUT			AS3722_GPIO_IOSF_VAL(8)
 #define AS3722_GPIO_IOSF_WATCHDOG_IN			AS3722_GPIO_IOSF_VAL(9)
-- 
1.7.9.5

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