From b95f9ec7d88b2b2362fab39a66fdccb3d6be53d4 Mon Sep 17 00:00:00 2001
From: "Mathieu J. Poirier" <mathieu.poirier@linaro.org>
Date: Tue, 31 Jul 2012 08:59:28 +0000
Subject: snowball: applying power to LAN and GBF controllers

LAN and GBF need to be powered explicitely, doing so with
interface to AB8500 companion chip.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---
 board/st-ericsson/snowball/snowball.c | 87 +++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)

(limited to 'board/st-ericsson/snowball')

diff --git a/board/st-ericsson/snowball/snowball.c b/board/st-ericsson/snowball/snowball.c
index 4bcc649724..7c3e08ce3f 100644
--- a/board/st-ericsson/snowball/snowball.c
+++ b/board/st-ericsson/snowball/snowball.c
@@ -25,6 +25,8 @@
 #include <asm/io.h>
 #include <asm/errno.h>
 #include <asm/arch/db8500_pincfg.h>
+#include <asm/arch/prcmu.h>
+#include <asm/arch/hardware.h>
 
 #include "db8500_pins.h"
 
@@ -164,3 +166,88 @@ int dram_init(void)
 
 	return 0;
 }
+
+static int raise_ab8500_gpio16(void)
+{
+	int ret;
+
+	/* selection */
+	ret = ab8500_read(AB8500_MISC, AB8500_GPIO_SEL2_REG);
+	if (ret < 0)
+		goto out;
+
+	ret |= 0x80;
+	ret = ab8500_write(AB8500_MISC, AB8500_GPIO_SEL2_REG, ret);
+	if (ret < 0)
+		goto out;
+
+	/* direction */
+	ret = ab8500_read(AB8500_MISC, AB8500_GPIO_DIR2_REG);
+	if (ret < 0)
+		goto out;
+
+	ret |= 0x80;
+	ret = ab8500_write(AB8500_MISC, AB8500_GPIO_DIR2_REG, ret);
+	if (ret < 0)
+		goto out;
+
+	/* out */
+	ret = ab8500_read(AB8500_MISC, AB8500_GPIO_OUT2_REG);
+	if (ret < 0)
+		goto out;
+
+	ret |= 0x80;
+	ret = ab8500_write(AB8500_MISC, AB8500_GPIO_OUT2_REG, ret);
+
+out:
+	return ret;
+}
+
+static int raise_ab8500_gpio26(void)
+{
+	int ret;
+
+	/* selection */
+	ret = ab8500_read(AB8500_MISC, AB8500_GPIO_DIR4_REG);
+	if (ret < 0)
+		goto out;
+
+	ret |= 0x2;
+	ret = ab8500_write(AB8500_MISC, AB8500_GPIO_DIR4_REG, ret);
+	if (ret < 0)
+		goto out;
+
+	/* out */
+	ret = ab8500_read(AB8500_MISC, AB8500_GPIO_OUT4_REG);
+	if (ret < 0)
+		goto out;
+
+	ret |= 0x2;
+	ret = ab8500_write(AB8500_MISC, AB8500_GPIO_OUT4_REG, ret);
+
+out:
+	return ret;
+}
+
+int board_late_init(void)
+{
+	/* enable 3V3 for LAN controller */
+	if (raise_ab8500_gpio26() >= 0) {
+		/* Turn on FSMC device */
+		writel(0x1, 0x8000f000);
+		writel(0x1, 0x8000f008);
+
+		/* setup FSMC for LAN controler */
+		writel(0x305b, 0x80000000);
+
+		/* run at the highest possible speed */
+		writel(0x01010210, 0x80000004);
+	} else
+		printf("error: can't raise GPIO26\n");
+
+	/* enable 3v6 for GBF chip */
+	if ((raise_ab8500_gpio16() < 0))
+		printf("error: cant' raise GPIO16\n");
+
+	return 0;
+}
-- 
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