linux-kernel - [PATCH 5/6] ARM: EXYNOS: Minor fixes to enable EXYNOS5410 support

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Date:	Tue, 01 Oct 2013 20:17:06 +0400
From:	Vyacheslav Tyrtov <v.tyrtov@...sung.com>
To:	linux-kernel@...r.kernel.org
Cc:	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Ben Dooks <ben-linux@...ff.org>,
	Mike Turquette <mturquette@...aro.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Heiko Stuebner <heiko@...ech.de>,
	Naour Romain <romain.naour@...nwide.fr>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	Tarek Dakhran <t.dakhran@...sung.com>,
	Tyrtov Vyacheslav <v.tyrtov@...sung.com>
Subject: [PATCH 5/6] ARM: EXYNOS: Minor fixes to enable EXYNOS5410 support

From: Tarek Dakhran <t.dakhran@...sung.com>

Configure ARM_NR_BANKS as 16 for EXYNOS SoC.
Enable cci_control_port_by_index for ACE_PORT.
Add additional irqs for Exynos MCT.
Set irq base as 256 for EXYNOS5410 SoC.

Signed-off-by: Vyacheslav Tyrtov <v.tyrtov@...sung.com>
---
 arch/arm/Kconfig                  |  2 +-
 drivers/bus/arm-cci.c             |  7 +++++++
 drivers/clocksource/exynos_mct.c  |  8 +++++++-
 drivers/irqchip/exynos-combiner.c | 12 +++++++++++-
 4 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3f7714d..7f88896 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1080,7 +1080,7 @@ source arch/arm/mm/Kconfig
 
 config ARM_NR_BANKS
 	int
-	default 16 if ARCH_EP93XX
+	default 16 if ARCH_EP93XX || ARCH_EXYNOS
 	default 8
 
 config IWMMXT
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 2009266..f2f5df1 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -363,8 +363,15 @@ int notrace __cci_control_port_by_index(u32 port, bool enable)
 	 * interface (ie cci_disable_port_by_cpu(); control by general purpose
 	 * indexing is therefore disabled for ACE ports.
 	 */
+
+	/*
+	 * Using this way to enable cci_port on EXYNOS5410 SoC
+	 */
+
+#ifndef CONFIG_SOC_EXYNOS5410
 	if (ports[port].type == ACE_PORT)
 		return -EPERM;
+#endif
 
 	cci_port_control(port, enable);
 	return 0;
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index 5b34768..33884d7 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -71,6 +71,12 @@ enum {
 	MCT_L1_IRQ,
 	MCT_L2_IRQ,
 	MCT_L3_IRQ,
+#ifdef CONFIG_ARM_CCI
+	MCT_L4_IRQ,
+	MCT_L5_IRQ,
+	MCT_L6_IRQ,
+	MCT_L7_IRQ,
+#endif
 	MCT_NR_IRQS,
 };
 
@@ -406,7 +412,7 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt)
 	mevt = container_of(evt, struct mct_clock_event_device, evt);
 
 	mevt->base = EXYNOS4_MCT_L_BASE(cpu);
-	sprintf(mevt->name, "mct_tick%d", cpu);
+	snprintf(mevt->name, 10, "mct_tick%d", cpu);
 
 	evt->name = mevt->name;
 	evt->cpumask = cpumask_of(cpu);
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 868ed40..2e056fc 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -18,6 +18,7 @@
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <asm/mach/irq.h>
+#include <plat/cpu.h>
 
 #include "irqchip.h"
 
@@ -66,6 +67,11 @@ static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
 	struct irq_chip *chip = irq_get_chip(irq);
 	unsigned int cascade_irq, combiner_irq;
 	unsigned long status;
+	if (unlikely(!chip || !chip_data)) {
+		printk_once(KERN_ALERT "%s: Chip not found for IRQ %d\n"
+				, __func__, irq);
+		return;
+	}
 
 	chained_irq_enter(chip, desc);
 
@@ -226,7 +232,11 @@ static int __init combiner_of_init(struct device_node *np,
 	 * get their IRQ from DT, remove this in order to get dynamic
 	 * allocation.
 	 */
-	irq_base = 160;
+
+	if (soc_is_exynos5410())
+		irq_base = 256;
+	else
+		irq_base = 160;
 
 	combiner_init(combiner_base, np, max_nr, irq_base);
 
-- 
1.8.1.5

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