linux-kernel - [PATCH 1/3] arm: omap2: Export devconf1 bypass and acbias.

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Date:	Mon, 14 Oct 2013 23:02:33 +0200
From:	Marek Belisko <marek@...delico.com>
To:	tony@...mide.com, linux@....linux.org.uk, tomi.valkeinen@...com,
	plagnioj@...osoft.com
Cc:	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	neilb@...e.de, hns@...delico.com,
	Marek Belisko <marek@...delico.com>
Subject: [PATCH 1/3] arm: omap2: Export devconf1 bypass and acbias.

devconf1 reg access is localized only in mach-omap2 and we need to export
updating of devconf1 from omapdss venc driver (bypass and acbias bits).
Add simple api call which update only necessary bits.

Signed-off-by: Marek Belisko <marek@...delico.com>
---
 arch/arm/mach-omap2/Makefile      |  2 ++
 arch/arm/mach-omap2/control.h     |  2 ++
 arch/arm/mach-omap2/omap3-tvout.c | 36 ++++++++++++++++++++++++++++++++++++
 include/linux/omap-tvout.h        | 14 ++++++++++++++
 4 files changed, 54 insertions(+)
 create mode 100644 arch/arm/mach-omap2/omap3-tvout.c
 create mode 100644 include/linux/omap-tvout.h

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index afb457c..15e0f28 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -306,3 +306,5 @@ emac-$(CONFIG_TI_DAVINCI_EMAC)		:= am35xx-emac.o
 obj-y					+= $(emac-m) $(emac-y)
 
 obj-y					+= common-board-devices.o twl-common.o dss-common.o
+
+obj-$(CONFIG_ARCH_OMAP3)		+= omap3-tvout.o
diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index f7d7c2e..65277f1 100644
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h
@@ -279,6 +279,8 @@
 
 /* CONTROL_DEVCONF1 bits */
 #define OMAP243X_MMC1_ACTIVE_OVERWRITE	(1 << 31)
+#define OMAP2_TVOUTBYPASS		(1 << 18)
+#define OMAP2_TVACEN			(1 << 11)
 #define OMAP2_MMCSDIO2ADPCLKISEL	(1 << 6) /* MMC2 loop back clock */
 #define OMAP2_MCBSP5_CLKS_MASK		(1 << 4) /* > 242x */
 #define OMAP2_MCBSP4_CLKS_MASK		(1 << 2) /* > 242x */
diff --git a/arch/arm/mach-omap2/omap3-tvout.c b/arch/arm/mach-omap2/omap3-tvout.c
new file mode 100644
index 0000000..eaed225
--- /dev/null
+++ b/arch/arm/mach-omap2/omap3-tvout.c
@@ -0,0 +1,36 @@
+/*
+ * linux/arch/arm/mach-omap2/omap3-tvout.c
+ *
+ * Copyright (C) 2013 Golden Delicious Computers
+ * Author: Marek Belisko <marek@...delico.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/omap-tvout.h>
+
+#include "soc.h"
+#include "control.h"
+
+void update_bypass_acbias(bool bypass, bool acbias)
+{
+#ifdef CONFIG_ARCH_OMAP3
+	int val = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
+
+	if (bypass)
+		val |= OMAP2_TVOUTBYPASS;
+	else
+		val &= ~OMAP2_TVOUTBYPASS;
+
+	if (acbias)
+		val |= OMAP2_TVACEN;
+	else
+		val &= ~OMAP2_TVACEN;
+
+	omap_ctrl_writel(val, OMAP343X_CONTROL_DEVCONF1);
+#endif
+}
+
diff --git a/include/linux/omap-tvout.h b/include/linux/omap-tvout.h
new file mode 100644
index 0000000..25f676d
--- /dev/null
+++ b/include/linux/omap-tvout.h
@@ -0,0 +1,14 @@
+/*
+ * OMAP TV-out support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __LINUX_OMAP_TVOUT_H
+#define __LINUX_OMAP_TVOUT_H
+
+extern void update_bypass_acbias(bool bypass, bool acbias);
+
+#endif
+
-- 
1.8.1.2

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