These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

4 files changed, 48 insertions, 4 deletions

diff --git a/kernel/arch/arm/mach-prima2/Kconfig b/kernel/arch/arm/mach-prima2/Kconfig
index e03d8b5c9..9ab893240 100644
--- a/kernel/arch/arm/mach-prima2/Kconfig
+++ b/kernel/arch/arm/mach-prima2/Kconfig
@@ -4,6 +4,7 @@ menuconfig ARCH_SIRF
 	select ARCH_REQUIRE_GPIOLIB
 	select GENERIC_IRQ_CHIP
 	select NO_IOPORT_MAP
+	select REGMAP
 	select PINCTRL
 	select PINCTRL_SIRF
 	help
diff --git a/kernel/arch/arm/mach-prima2/hotplug.c b/kernel/arch/arm/mach-prima2/hotplug.c
index 0ab2f8bae..a728c78b9 100644
--- a/kernel/arch/arm/mach-prima2/hotplug.c
+++ b/kernel/arch/arm/mach-prima2/hotplug.c
@@ -32,7 +32,7 @@ static inline void platform_do_lowpower(unsigned int cpu)
  *
  * Called with IRQs disabled
  */
-void __ref sirfsoc_cpu_die(unsigned int cpu)
+void sirfsoc_cpu_die(unsigned int cpu)
 {
 	platform_do_lowpower(cpu);
 }
diff --git a/kernel/arch/arm/mach-prima2/pm.c b/kernel/arch/arm/mach-prima2/pm.c
index d99d08eeb..83e94c95e 100644
--- a/kernel/arch/arm/mach-prima2/pm.c
+++ b/kernel/arch/arm/mach-prima2/pm.c
@@ -16,6 +16,7 @@
 #include <linux/of_platform.h>
 #include <linux/io.h>
 #include <linux/rtc/sirfsoc_rtciobrg.h>
+#include <asm/outercache.h>
 #include <asm/suspend.h>
 #include <asm/hardware/cache-l2x0.h>
 
diff --git a/kernel/arch/arm/mach-prima2/rtciobrg.c b/kernel/arch/arm/mach-prima2/rtciobrg.c
index 8f66d8f7c..d4852d24d 100644
--- a/kernel/arch/arm/mach-prima2/rtciobrg.c
+++ b/kernel/arch/arm/mach-prima2/rtciobrg.c
@@ -1,5 +1,5 @@
 /*
- * RTC I/O Bridge interfaces for CSR SiRFprimaII
+ * RTC I/O Bridge interfaces for CSR SiRFprimaII/atlas7
  * ARM access the registers of SYSRTC, GPSRTC and PWRC through this module
  *
  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
@@ -10,6 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/regmap.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
@@ -66,6 +67,7 @@ u32 sirfsoc_rtc_iobrg_readl(u32 addr)
 {
 	unsigned long flags, val;
 
+	/* TODO: add hwspinlock to sync with M3 */
 	spin_lock_irqsave(&rtciobrg_lock, flags);
 
 	val = __sirfsoc_rtc_iobrg_readl(addr);
@@ -90,6 +92,7 @@ void sirfsoc_rtc_iobrg_writel(u32 val, u32 addr)
 {
 	unsigned long flags;
 
+	 /* TODO: add hwspinlock to sync with M3 */
 	spin_lock_irqsave(&rtciobrg_lock, flags);
 
 	sirfsoc_rtc_iobrg_pre_writel(val, addr);
@@ -102,6 +105,45 @@ void sirfsoc_rtc_iobrg_writel(u32 val, u32 addr)
 }
 EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_writel);
 
+
+static int regmap_iobg_regwrite(void *context, unsigned int reg,
+				   unsigned int val)
+{
+	sirfsoc_rtc_iobrg_writel(val, reg);
+	return 0;
+}
+
+static int regmap_iobg_regread(void *context, unsigned int reg,
+				  unsigned int *val)
+{
+	*val = (u32)sirfsoc_rtc_iobrg_readl(reg);
+	return 0;
+}
+
+static struct regmap_bus regmap_iobg = {
+	.reg_write = regmap_iobg_regwrite,
+	.reg_read = regmap_iobg_regread,
+};
+
+/**
+ * devm_regmap_init_iobg(): Initialise managed register map
+ *
+ * @iobg: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap.  The regmap will be automatically freed by the
+ * device management code.
+ */
+struct regmap *devm_regmap_init_iobg(struct device *dev,
+				    const struct regmap_config *config)
+{
+	const struct regmap_bus *bus = &regmap_iobg;
+
+	return devm_regmap_init(dev, bus, dev, config);
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_iobg);
+
 static const struct of_device_id rtciobrg_ids[] = {
 	{ .compatible = "sirf,prima2-rtciobg" },
 	{}
@@ -132,7 +174,7 @@ static int __init sirfsoc_rtciobrg_init(void)
 }
 postcore_initcall(sirfsoc_rtciobrg_init);
 
-MODULE_AUTHOR("Zhiwu Song <zhiwu.song@csr.com>, "
-		"Barry Song <baohua.song@csr.com>");
+MODULE_AUTHOR("Zhiwu Song <zhiwu.song@csr.com>");
+MODULE_AUTHOR("Barry Song <baohua.song@csr.com>");
 MODULE_DESCRIPTION("CSR SiRFprimaII rtc io bridge");
 MODULE_LICENSE("GPL v2");