linux-kernel - [PATCH 32/40] ARM: ux500: Delete U8500 UIB support when booting with ATAGs

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Date:	Fri, 23 Aug 2013 13:23:32 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	arnd@...db.de, linus.walleij@...aro.org,
	Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 32/40] ARM: ux500: Delete U8500 UIB support when booting with ATAGs

It's time to remove all ATAG support from ux500 and rely solely on
Device Tree booting. This patch is part of that endeavour.

Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 arch/arm/mach-ux500/Makefile                |  1 -
 arch/arm/mach-ux500/board-mop500-u8500uib.c | 14 --------------
 arch/arm/mach-ux500/board-mop500-uib.c      | 30 +----------------------------
 arch/arm/mach-ux500/board-mop500.h          |  1 -
 4 files changed, 1 insertion(+), 45 deletions(-)
 delete mode 100644 arch/arm/mach-ux500/board-mop500-u8500uib.c

diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile
index cac22ba..8634a3fa 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_UX500_SOC_DB8500)	+= cpu-db8500.o devices-db8500.o
 obj-$(CONFIG_MACH_MOP500)	+= board-mop500.o board-mop500-sdi.o \
 				board-mop500-regulators.o \
 				board-mop500-uib.o board-mop500-stuib.o \
-				board-mop500-u8500uib.o \
 				board-mop500-pins.o \
 				board-mop500-audio.o
 obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o
diff --git a/arch/arm/mach-ux500/board-mop500-u8500uib.c b/arch/arm/mach-ux500/board-mop500-u8500uib.c
deleted file mode 100644
index 43c9ff1..0000000
--- a/arch/arm/mach-ux500/board-mop500-u8500uib.c
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) ST-Ericsson SA 2010
- *
- * Board data for the U8500 UIB, also known as the New UIB
- * License terms: GNU General Public License (GPL), version 2
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-
-#include "board-mop500.h"
-
-void __init mop500_u8500uib_init(void)
-{
-}
diff --git a/arch/arm/mach-ux500/board-mop500-uib.c b/arch/arm/mach-ux500/board-mop500-uib.c
index bdaa422..0e94f1d 100644
--- a/arch/arm/mach-ux500/board-mop500-uib.c
+++ b/arch/arm/mach-ux500/board-mop500-uib.c
@@ -16,7 +16,6 @@
 
 enum mop500_uib {
 	STUIB,
-	U8500UIB,
 };
 
 struct uib {
@@ -31,11 +30,6 @@ static struct uib __initdata mop500_uibs[] = {
 		.option	= "stuib",
 		.init	= mop500_stuib_init,
 	},
-	[U8500UIB] = {
-		.name	= "U8500-UIB",
-		.option	= "u8500uib",
-		.init	= mop500_u8500uib_init,
-	},
 };
 
 static struct uib *mop500_uib;
@@ -93,14 +87,9 @@ static void __init __mop500_uib_init(struct uib *uib, const char *why)
 	uib->init();
 }
 
-/*
- * Detect the UIB attached based on the presence or absence of i2c devices.
- */
 int __init mop500_uib_init(void)
 {
 	struct uib *uib = mop500_uib;
-	struct i2c_adapter *i2c0;
-	int ret;
 
 	if (!cpu_is_u8500_family())
 		return -ENODEV;
@@ -110,24 +99,7 @@ int __init mop500_uib_init(void)
 		return 0;
 	}
 
-	i2c0 = i2c_get_adapter(0);
-	if (!i2c0) {
-		__mop500_uib_init(&mop500_uibs[STUIB],
-				"fallback, could not get i2c0");
-		return -ENODEV;
-	}
-
-	/* U8500-UIB has the TC35893 at 0x44 on I2C0, the ST-UIB doesn't. */
-	ret = i2c_smbus_xfer(i2c0, 0x44, 0, I2C_SMBUS_WRITE, 0,
-			I2C_SMBUS_QUICK, NULL);
-	i2c_put_adapter(i2c0);
-
-	if (ret == 0)
-		uib = &mop500_uibs[U8500UIB];
-	else
-		uib = &mop500_uibs[STUIB];
-
-	__mop500_uib_init(uib, "detected");
+	__mop500_uib_init(&mop500_uibs[STUIB], "detected");
 
 	return 0;
 }
diff --git a/arch/arm/mach-ux500/board-mop500.h b/arch/arm/mach-ux500/board-mop500.h
index cf6b304..223639b 100644
--- a/arch/arm/mach-ux500/board-mop500.h
+++ b/arch/arm/mach-ux500/board-mop500.h
@@ -89,7 +89,6 @@ extern struct msp_i2s_platform_data msp2_platform_data;
 extern struct msp_i2s_platform_data msp3_platform_data;
 extern struct pl022_ssp_controller ssp0_plat;
 
-void __init mop500_u8500uib_init(void);
 void __init mop500_stuib_init(void);
 void __init mop500_pinmaps_init(void);
 void __init snowball_pinmaps_init(void);
-- 
1.8.1.2

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