linux-kernel - [PATCH] Visstrim M10: fix gpio handling.

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Message-Id: <1338376389-32256-1-git-send-email-javier.martin@vista-silicon.com>
Date:	Wed, 30 May 2012 13:13:09 +0200
From:	Javier Martin <javier.martin@...ta-silicon.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	kernel@...gutronix.de, linux@....linux.org.uk,
	linux-kernel@...r.kernel.org,
	Javier Martin <javier.martin@...ta-silicon.com>
Subject: [PATCH] Visstrim M10: fix gpio handling.

Some GPIOs in Visstrim M10 are used without being registered.
This leads to USB and video malfunctions. This patch registers
those GPIOs to solve the issue.

Signed-off-by: Javier Martin <javier.martin@...ta-silicon.com>
---
 arch/arm/mach-imx/mach-imx27_visstrim_m10.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
index e8741f9..db4aa6f 100644
--- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
@@ -116,6 +116,8 @@ static const int visstrim_m10_pins[] __initconst = {
 	PB23_PF_USB_PWR,
 	PB24_PF_USB_OC,
 	/* CSI */
+	TVP5150_RSTN | GPIO_GPIO | GPIO_OUT,
+	TVP5150_PWDN | GPIO_GPIO | GPIO_OUT,
 	PB10_PF_CSI_D0,
 	PB11_PF_CSI_D1,
 	PB12_PF_CSI_D2,
@@ -182,10 +184,10 @@ static void __init visstrim_camera_init(void)
 	int dma;
 
 	/* Initialize tvp5150 gpios */
-	mxc_gpio_mode(TVP5150_RSTN | GPIO_GPIO | GPIO_OUT);
-	mxc_gpio_mode(TVP5150_PWDN | GPIO_GPIO | GPIO_OUT);
-	gpio_set_value(TVP5150_RSTN, 1);
-	gpio_set_value(TVP5150_PWDN, 0);
+	gpio_request_one(TVP5150_RSTN, GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
+			 "tvp5150_rstn");
+	gpio_request_one(TVP5150_PWDN, GPIOF_DIR_OUT | GPIOF_INIT_LOW,
+			 "tvp5150_pwdn");
 	ndelay(1);
 
 	gpio_set_value(TVP5150_PWDN, 1);
@@ -414,7 +416,8 @@ static struct i2c_board_info visstrim_m10_i2c_devices[] = {
 /* USB OTG */
 static int otg_phy_init(struct platform_device *pdev)
 {
-	gpio_set_value(OTG_PHY_CS_GPIO, 0);
+	gpio_request_one(OTG_PHY_CS_GPIO, GPIOF_DIR_OUT | GPIOF_INIT_LOW,
+			 "usbotg_cs");
 
 	mdelay(10);
 
-- 
1.7.0.4

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