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authorRob Herring <robh@kernel.org>2020-04-29 15:58:10 -0500
committerRob Herring <robh@kernel.org>2020-05-05 11:42:39 -0500
commit9b06fc39084e161da84a399b6b5dc524e673f51e (patch)
tree115b6a90e57de0c4967fc5d94f2424e4ba9fcfc6 /arch/arm/mach-vexpress
parentae83d0b416db002fe95601e7f97f64b59514d936 (diff)
downloadlinux-9b06fc39084e161da84a399b6b5dc524e673f51e.tar.bz2
ARM: vexpress: Move vexpress_flags_set() into arch code
vexpress_flags_set() is only used by the platform SMP related code and has nothing to do with the vexpress-sysreg MFD driver other than both access the same h/w block. It's also only needed for 32-bit systems and must be built-in for them. Let's move vexpress_flags_set() closer to where it is being used. This will allow for vexpress-sysreg to be built as a module. Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Liviu Dudau <liviu.dudau@arm.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'arch/arm/mach-vexpress')
-rw-r--r--arch/arm/mach-vexpress/Kconfig1
-rw-r--r--arch/arm/mach-vexpress/core.h1
-rw-r--r--arch/arm/mach-vexpress/dcscb.c1
-rw-r--r--arch/arm/mach-vexpress/v2m.c23
4 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index 726a68085c3b..18951cd20d9d 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -22,7 +22,6 @@ menuconfig ARCH_VEXPRESS
select REGULATOR_FIXED_VOLTAGE if REGULATOR
select VEXPRESS_CONFIG
select VEXPRESS_SYSCFG
- select MFD_VEXPRESS_SYSREG
help
This option enables support for systems using Cortex processor based
ARM core and logic (FPGA) tiles on the Versatile Express motherboard,
diff --git a/arch/arm/mach-vexpress/core.h b/arch/arm/mach-vexpress/core.h
index f4a7519084f1..bda78675c55d 100644
--- a/arch/arm/mach-vexpress/core.h
+++ b/arch/arm/mach-vexpress/core.h
@@ -1,3 +1,4 @@
bool vexpress_smp_init_ops(void);
+void vexpress_flags_set(u32 data);
extern const struct smp_operations vexpress_smp_dt_ops;
diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c
index 46a903c88c6a..a0554d7d04f7 100644
--- a/arch/arm/mach-vexpress/dcscb.c
+++ b/arch/arm/mach-vexpress/dcscb.c
@@ -20,6 +20,7 @@
#include <asm/cputype.h>
#include <asm/cp15.h>
+#include "core.h"
#define RST_HOLD0 0x0
#define RST_HOLD1 0x4
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 95886b3bb9dd..ffe7c7a85ae9 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -1,8 +1,31 @@
// SPDX-License-Identifier: GPL-2.0
+#include <linux/of.h>
+#include <linux/of_address.h>
#include <asm/mach/arch.h>
#include "core.h"
+#define SYS_FLAGSSET 0x030
+#define SYS_FLAGSCLR 0x034
+
+void vexpress_flags_set(u32 data)
+{
+ static void __iomem *base;
+
+ if (!base) {
+ struct device_node *node = of_find_compatible_node(NULL, NULL,
+ "arm,vexpress-sysreg");
+
+ base = of_iomap(node, 0);
+ }
+
+ if (WARN_ON(!base))
+ return;
+
+ writel(~0, base + SYS_FLAGSCLR);
+ writel(data, base + SYS_FLAGSSET);
+}
+
static const char * const v2m_dt_match[] __initconst = {
"arm,vexpress",
NULL,