From: Juha Yrjola <juha.yrjola@solidboot.com>
Date: Thu, 7 Dec 2006 01:13:48 +0000 (-0800)
Subject: ARM: OMAP: Enable 24xx GPIO autoidling
X-Git-Tag: v2.6.22-rc1~1009^2~1^9~7
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14f1c3bf51b78d916a6aff9c9b5e6689e3e006e7;p=linux-2.6

ARM: OMAP: Enable 24xx GPIO autoidling

Enable 24xx GPIO autoidling

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 8bedc8f9b6..037a4930ec 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1082,6 +1082,10 @@ static int __init _omap_gpio_init(void)
 		if (bank->method == METHOD_GPIO_24XX) {
 			__raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1);
 			__raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1);
+			__raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG);
+
+			/* Initialize interface clock ungated, module enabled */
+			__raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);
 
 			gpio_count = 32;
 		}
@@ -1104,6 +1108,12 @@ static int __init _omap_gpio_init(void)
 	if (cpu_is_omap16xx())
 		omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, ULPD_CAM_CLK_CTRL);
 
+#ifdef CONFIG_ARCH_OMAP24XX
+	/* Enable autoidle for the OCP interface */
+	if (cpu_is_omap24xx())
+		omap_writel(1 << 0, 0x48019010);
+#endif
+
 	return 0;
 }