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authorOlof Johansson <olof@lixom.net>2013-04-11 03:39:00 -0700
committerOlof Johansson <olof@lixom.net>2013-04-11 03:39:00 -0700
commitb9d5868e342a9802db7b299be511ac547ff1034d (patch)
tree49c8fe5467b817bcaf2afa6468c2e362f50e4770
parent83c15f4c05757b3c5fe1551a474458fd16d27bae (diff)
parentbc34b5f27cd33f4213bc5c8df0099dd11408d29d (diff)
downloadop-kernel-dev-b9d5868e342a9802db7b299be511ac547ff1034d.zip
op-kernel-dev-b9d5868e342a9802db7b299be511ac547ff1034d.tar.gz
Merge tag 'sunxi-cleanup-for-3.10' of git://github.com/mripard/linux into next/cleanup
From Maxime Ripard: Cleanups for Allwinner sunXi architecture: - Remove sunxi.dtsi - Switch to clocksource/irqchip device tree handlers - Cleanup the watchdog code * tag 'sunxi-cleanup-for-3.10' of git://github.com/mripard/linux: ARM: sunxi: Rework the restart code irqchip: sunxi: Rename sunxi to sun4i irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro clocksource: sunxi: Rename sunxi to sun4i clocksource: sunxi: make use of CLKSRC_OF clocksource: sunxi: Cleanup the timer code clocksource: make CLOCKSOURCE_OF_DECLARE type safe Signed-off-by: Olof Johansson <olof@lixom.net> Add/change conflict in drivers/clocksource/Makefile resolved.
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/allwinner,sun4i-ic.txt (renamed from Documentation/devicetree/bindings/interrupt-controller/allwinner,sunxi-ic.txt)4
-rw-r--r--Documentation/devicetree/bindings/timer/allwinner,sun4i-timer.txt (renamed from Documentation/devicetree/bindings/timer/allwinner,sunxi-timer.txt)4
-rw-r--r--Documentation/devicetree/bindings/watchdog/sun4i-wdt.txt (renamed from Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt)6
-rw-r--r--arch/arm/mach-sunxi/Kconfig5
-rw-r--r--arch/arm/mach-sunxi/sunxi.c74
-rw-r--r--drivers/clocksource/Kconfig2
-rw-r--r--drivers/clocksource/Makefile2
-rw-r--r--drivers/clocksource/clksrc-of.c3
-rw-r--r--drivers/clocksource/sun4i_timer.c (renamed from drivers/clocksource/sunxi_timer.c)94
-rw-r--r--drivers/clocksource/vt8500_timer.c2
-rw-r--r--drivers/irqchip/Makefile2
-rw-r--r--drivers/irqchip/irq-sun4i.c149
-rw-r--r--drivers/irqchip/irq-sunxi.c151
-rw-r--r--include/linux/clocksource.h11
-rw-r--r--include/linux/irqchip/sunxi.h27
-rw-r--r--include/linux/sunxi_timer.h24
16 files changed, 261 insertions, 299 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/allwinner,sunxi-ic.txt b/Documentation/devicetree/bindings/interrupt-controller/allwinner,sun4i-ic.txt
index 7f9fb85..e7f4dc1 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/allwinner,sunxi-ic.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/allwinner,sun4i-ic.txt
@@ -2,7 +2,7 @@ Allwinner Sunxi Interrupt Controller
Required properties:
-- compatible : should be "allwinner,sunxi-ic"
+- compatible : should be "allwinner,sun4i-ic"
- reg : Specifies base physical address and size of the registers.
- interrupt-controller : Identifies the node as an interrupt controller
- #interrupt-cells : Specifies the number of cells needed to encode an
@@ -97,7 +97,7 @@ The interrupt sources are as follows:
Example:
intc: interrupt-controller {
- compatible = "allwinner,sunxi-ic";
+ compatible = "allwinner,sun4i-ic";
reg = <0x01c20400 0x400>;
interrupt-controller;
#interrupt-cells = <2>;
diff --git a/Documentation/devicetree/bindings/timer/allwinner,sunxi-timer.txt b/Documentation/devicetree/bindings/timer/allwinner,sun4i-timer.txt
index 0c7b64e..48aeb78 100644
--- a/Documentation/devicetree/bindings/timer/allwinner,sunxi-timer.txt
+++ b/Documentation/devicetree/bindings/timer/allwinner,sun4i-timer.txt
@@ -2,7 +2,7 @@ Allwinner A1X SoCs Timer Controller
Required properties:
-- compatible : should be "allwinner,sunxi-timer"
+- compatible : should be "allwinner,sun4i-timer"
- reg : Specifies base physical address and size of the registers.
- interrupts : The interrupt of the first timer
- clocks: phandle to the source clock (usually a 24 MHz fixed clock)
@@ -10,7 +10,7 @@ Required properties:
Example:
timer {
- compatible = "allwinner,sunxi-timer";
+ compatible = "allwinner,sun4i-timer";
reg = <0x01c20c00 0x400>;
interrupts = <22>;
clocks = <&osc>;
diff --git a/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt b/Documentation/devicetree/bindings/watchdog/sun4i-wdt.txt
index 0b27177..ecd650a 100644
--- a/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/sun4i-wdt.txt
@@ -1,13 +1,13 @@
-Allwinner sunXi Watchdog timer
+Allwinner sun4i Watchdog timer
Required properties:
-- compatible : should be "allwinner,sunxi-wdt"
+- compatible : should be "allwinner,sun4i-wdt"
- reg : Specifies base physical address and size of the registers.
Example:
wdt: watchdog@01c20c90 {
- compatible = "allwinner,sunxi-wdt";
+ compatible = "allwinner,sun4i-wdt";
reg = <0x01c20c90 0x10>;
};
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 8709a39..d259c78 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -1,10 +1,11 @@
config ARCH_SUNXI
bool "Allwinner A1X SOCs" if ARCH_MULTI_V7
select CLKSRC_MMIO
+ select CLKSRC_OF
select COMMON_CLK
select GENERIC_CLOCKEVENTS
select GENERIC_IRQ_CHIP
select PINCTRL
select SPARSE_IRQ
- select SUNXI_TIMER
- select PINCTRL_SUNXI \ No newline at end of file
+ select SUN4I_TIMER
+ select PINCTRL_SUNXI
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 23afb73..706ce35 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -10,63 +10,77 @@
* warranty of any kind, whether express or implied.
*/
+#include <linux/clocksource.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/irqchip.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/io.h>
-#include <linux/sunxi_timer.h>
-#include <linux/irqchip/sunxi.h>
+#include <linux/clk/sunxi.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
+#include <asm/system_misc.h>
#include "sunxi.h"
-#define WATCHDOG_CTRL_REG 0x00
-#define WATCHDOG_CTRL_RESTART (1 << 0)
-#define WATCHDOG_MODE_REG 0x04
-#define WATCHDOG_MODE_ENABLE (1 << 0)
-#define WATCHDOG_MODE_RESET_ENABLE (1 << 1)
+#define SUN4I_WATCHDOG_CTRL_REG 0x00
+#define SUN4I_WATCHDOG_CTRL_RESTART (1 << 0)
+#define SUN4I_WATCHDOG_MODE_REG 0x04
+#define SUN4I_WATCHDOG_MODE_ENABLE (1 << 0)
+#define SUN4I_WATCHDOG_MODE_RESET_ENABLE (1 << 1)
static void __iomem *wdt_base;
-static void sunxi_setup_restart(void)
-{
- struct device_node *np = of_find_compatible_node(NULL, NULL,
- "allwinner,sunxi-wdt");
- if (WARN(!np, "unable to setup watchdog restart"))
- return;
-
- wdt_base = of_iomap(np, 0);
- WARN(!wdt_base, "failed to map watchdog base address");
-}
-
-static void sunxi_restart(char mode, const char *cmd)
+static void sun4i_restart(char mode, const char *cmd)
{
if (!wdt_base)
return;
/* Enable timer and set reset bit in the watchdog */
- writel(WATCHDOG_MODE_ENABLE | WATCHDOG_MODE_RESET_ENABLE,
- wdt_base + WATCHDOG_MODE_REG);
+ writel(SUN4I_WATCHDOG_MODE_ENABLE | SUN4I_WATCHDOG_MODE_RESET_ENABLE,
+ wdt_base + SUN4I_WATCHDOG_MODE_REG);
/*
* Restart the watchdog. The default (and lowest) interval
* value for the watchdog is 0.5s.
*/
- writel(WATCHDOG_CTRL_RESTART, wdt_base + WATCHDOG_CTRL_REG);
+ writel(SUN4I_WATCHDOG_CTRL_RESTART, wdt_base + SUN4I_WATCHDOG_CTRL_REG);
while (1) {
mdelay(5);
- writel(WATCHDOG_MODE_ENABLE | WATCHDOG_MODE_RESET_ENABLE,
- wdt_base + WATCHDOG_MODE_REG);
+ writel(SUN4I_WATCHDOG_MODE_ENABLE | SUN4I_WATCHDOG_MODE_RESET_ENABLE,
+ wdt_base + SUN4I_WATCHDOG_MODE_REG);
}
}
+static struct of_device_id sunxi_restart_ids[] = {
+ { .compatible = "allwinner,sun4i-wdt", .data = sun4i_restart },
+ { /*sentinel*/ }
+};
+
+static void sunxi_setup_restart(void)
+{
+ const struct of_device_id *of_id;
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, sunxi_restart_ids);
+ if (WARN(!np, "unable to setup watchdog restart"))
+ return;
+
+ wdt_base = of_iomap(np, 0);
+ WARN(!wdt_base, "failed to map watchdog base address");
+
+ of_id = of_match_node(sunxi_restart_ids, np);
+ WARN(!of_id, "restart function not available");
+
+ arm_pm_restart = of_id->data;
+}
+
static struct map_desc sunxi_io_desc[] __initdata = {
{
.virtual = (unsigned long) SUNXI_REGS_VIRT_BASE,
@@ -81,6 +95,12 @@ void __init sunxi_map_io(void)
iotable_init(sunxi_io_desc, ARRAY_SIZE(sunxi_io_desc));
}
+static void __init sunxi_timer_init(void)
+{
+ sunxi_init_clocks();
+ clocksource_of_init();
+}
+
static void __init sunxi_dt_init(void)
{
sunxi_setup_restart();
@@ -97,9 +117,7 @@ static const char * const sunxi_board_dt_compat[] = {
DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
.init_machine = sunxi_dt_init,
.map_io = sunxi_map_io,
- .init_irq = sunxi_init_irq,
- .handle_irq = sunxi_handle_irq,
- .restart = sunxi_restart,
- .init_time = &sunxi_timer_init,
+ .init_irq = irqchip_init,
+ .init_time = sunxi_timer_init,
.dt_compat = sunxi_board_dt_compat,
MACHINE_END
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index e507ab7..9002185 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -25,7 +25,7 @@ config DW_APB_TIMER_OF
config ARMADA_370_XP_TIMER
bool
-config SUNXI_TIMER
+config SUN4I_TIMER
bool
config VT8500_TIMER
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 89c5adc..98f220a 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -17,7 +17,7 @@ obj-$(CONFIG_CLKSRC_DBX500_PRCMU) += clksrc-dbx500-prcmu.o
obj-$(CONFIG_ARMADA_370_XP_TIMER) += time-armada-370-xp.o
obj-$(CONFIG_ARCH_BCM2835) += bcm2835_timer.o
obj-$(CONFIG_ARCH_MXS) += mxs_timer.o
-obj-$(CONFIG_SUNXI_TIMER) += sunxi_timer.o
+obj-$(CONFIG_SUN4I_TIMER) += sun4i_timer.o
obj-$(CONFIG_ARCH_TEGRA) += tegra20_timer.o
obj-$(CONFIG_VT8500_TIMER) += vt8500_timer.o
diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
index 3ef11fb..37f5325 100644
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-of.c
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/of.h>
+#include <linux/clocksource.h>
extern struct of_device_id __clksrc_of_table[];
@@ -26,7 +27,7 @@ void __init clocksource_of_init(void)
{
struct device_node *np;
const struct of_device_id *match;
- void (*init_func)(struct device_node *);
+ clocksource_of_init_fn init_func;
for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
init_func = match->data;
diff --git a/drivers/clocksource/sunxi_timer.c b/drivers/clocksource/sun4i_timer.c
index 0ce85e2..d4674e7 100644
--- a/drivers/clocksource/sunxi_timer.c
+++ b/drivers/clocksource/sun4i_timer.c
@@ -22,66 +22,64 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
-#include <linux/sunxi_timer.h>
-#include <linux/clk/sunxi.h>
-#define TIMER_CTL_REG 0x00
-#define TIMER_CTL_ENABLE (1 << 0)
+#define TIMER_IRQ_EN_REG 0x00
+#define TIMER_IRQ_EN(val) (1 << val)
#define TIMER_IRQ_ST_REG 0x04
-#define TIMER0_CTL_REG 0x10
-#define TIMER0_CTL_ENABLE (1 << 0)
-#define TIMER0_CTL_AUTORELOAD (1 << 1)
-#define TIMER0_CTL_ONESHOT (1 << 7)
-#define TIMER0_INTVAL_REG 0x14
-#define TIMER0_CNTVAL_REG 0x18
+#define TIMER_CTL_REG(val) (0x10 * val + 0x10)
+#define TIMER_CTL_ENABLE (1 << 0)
+#define TIMER_CTL_AUTORELOAD (1 << 1)
+#define TIMER_CTL_ONESHOT (1 << 7)
+#define TIMER_INTVAL_REG(val) (0x10 * val + 0x14)
+#define TIMER_CNTVAL_REG(val) (0x10 * val + 0x18)
#define TIMER_SCAL 16
static void __iomem *timer_base;
-static void sunxi_clkevt_mode(enum clock_event_mode mode,
+static void sun4i_clkevt_mode(enum clock_event_mode mode,
struct clock_event_device *clk)
{
- u32 u = readl(timer_base + TIMER0_CTL_REG);
+ u32 u = readl(timer_base + TIMER_CTL_REG(0));
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
- u &= ~(TIMER0_CTL_ONESHOT);
- writel(u | TIMER0_CTL_ENABLE, timer_base + TIMER0_CTL_REG);
+ u &= ~(TIMER_CTL_ONESHOT);
+ writel(u | TIMER_CTL_ENABLE, timer_base + TIMER_CTL_REG(0));
break;
case CLOCK_EVT_MODE_ONESHOT:
- writel(u | TIMER0_CTL_ONESHOT, timer_base + TIMER0_CTL_REG);
+ writel(u | TIMER_CTL_ONESHOT, timer_base + TIMER_CTL_REG(0));
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
default:
- writel(u & ~(TIMER0_CTL_ENABLE), timer_base + TIMER0_CTL_REG);
+ writel(u & ~(TIMER_CTL_ENABLE), timer_base + TIMER_CTL_REG(0));
break;
}
}
-static int sunxi_clkevt_next_event(unsigned long evt,
+static int sun4i_clkevt_next_event(unsigned long evt,
struct clock_event_device *unused)
{
- u32 u = readl(timer_base + TIMER0_CTL_REG);
- writel(evt, timer_base + TIMER0_CNTVAL_REG);
- writel(u | TIMER0_CTL_ENABLE | TIMER0_CTL_AUTORELOAD,
- timer_base + TIMER0_CTL_REG);
+ u32 u = readl(timer_base + TIMER_CTL_REG(0));
+ writel(evt, timer_base + TIMER_CNTVAL_REG(0));
+ writel(u | TIMER_CTL_ENABLE | TIMER_CTL_AUTORELOAD,
+ timer_base + TIMER_CTL_REG(0));
return 0;
}
-static struct clock_event_device sunxi_clockevent = {
- .name = "sunxi_tick",
+static struct clock_event_device sun4i_clockevent = {
+ .name = "sun4i_tick",
.rating = 300,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .set_mode = sunxi_clkevt_mode,
- .set_next_event = sunxi_clkevt_next_event,
+ .set_mode = sun4i_clkevt_mode,
+ .set_next_event = sun4i_clkevt_next_event,
};
-static irqreturn_t sunxi_timer_interrupt(int irq, void *dev_id)
+static irqreturn_t sun4i_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = (struct clock_event_device *)dev_id;
@@ -91,30 +89,20 @@ static irqreturn_t sunxi_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static struct irqaction sunxi_timer_irq = {
- .name = "sunxi_timer0",
+static struct irqaction sun4i_timer_irq = {
+ .name = "sun4i_timer0",
.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
- .handler = sunxi_timer_interrupt,
- .dev_id = &sunxi_clockevent,
-};
-
-static struct of_device_id sunxi_timer_dt_ids[] = {
- { .compatible = "allwinner,sunxi-timer" },
- { }
+ .handler = sun4i_timer_interrupt,
+ .dev_id = &sun4i_clockevent,
};
-void __init sunxi_timer_init(void)
+static void __init sun4i_timer_init(struct device_node *node)
{
- struct device_node *node;
unsigned long rate = 0;
struct clk *clk;
int ret, irq;
u32 val;
- node = of_find_matching_node(NULL, sunxi_timer_dt_ids);
- if (!node)
- panic("No sunxi timer node");
-
timer_base = of_iomap(node, 0);
if (!timer_base)
panic("Can't map registers");
@@ -123,8 +111,6 @@ void __init sunxi_timer_init(void)
if (irq <= 0)
panic("Can't parse IRQ");
- sunxi_init_clocks();
-
clk = of_clk_get(node, 0);
if (IS_ERR(clk))
panic("Can't get timer clock");
@@ -132,29 +118,31 @@ void __init sunxi_timer_init(void)
rate = clk_get_rate(clk);
writel(rate / (TIMER_SCAL * HZ),
- timer_base + TIMER0_INTVAL_REG);
+ timer_base + TIMER_INTVAL_REG(0));
/* set clock source to HOSC, 16 pre-division */
- val = readl(timer_base + TIMER0_CTL_REG);
+ val = readl(timer_base + TIMER_CTL_REG(0));
val &= ~(0x07 << 4);
val &= ~(0x03 << 2);
val |= (4 << 4) | (1 << 2);
- writel(val, timer_base + TIMER0_CTL_REG);
+ writel(val, timer_base + TIMER_CTL_REG(0));
/* set mode to auto reload */
- val = readl(timer_base + TIMER0_CTL_REG);
- writel(val | TIMER0_CTL_AUTORELOAD, timer_base + TIMER0_CTL_REG);
+ val = readl(timer_base + TIMER_CTL_REG(0));
+ writel(val | TIMER_CTL_AUTORELOAD, timer_base + TIMER_CTL_REG(0));
- ret = setup_irq(irq, &sunxi_timer_irq);
+ ret = setup_irq(irq, &sun4i_timer_irq);
if (ret)
pr_warn("failed to setup irq %d\n", irq);
/* Enable timer0 interrupt */
- val = readl(timer_base + TIMER_CTL_REG);
- writel(val | TIMER_CTL_ENABLE, timer_base + TIMER_CTL_REG);
+ val = readl(timer_base + TIMER_IRQ_EN_REG);
+ writel(val | TIMER_IRQ_EN(0), timer_base + TIMER_IRQ_EN_REG);
- sunxi_clockevent.cpumask = cpumask_of(0);
+ sun4i_clockevent.cpumask = cpumask_of(0);
- clockevents_config_and_register(&sunxi_clockevent, rate / TIMER_SCAL,
+ clockevents_config_and_register(&sun4i_clockevent, rate / TIMER_SCAL,
0x1, 0xff);
}
+CLOCKSOURCE_OF_DECLARE(sun4i, "allwinner,sun4i-timer",
+ sun4i_timer_init);
diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c
index 2422552..64f553f 100644
--- a/drivers/clocksource/vt8500_timer.c
+++ b/drivers/clocksource/vt8500_timer.c
@@ -165,4 +165,4 @@ static void __init vt8500_timer_init(struct device_node *np)
4, 0xf0000000);
}
-CLOCKSOURCE_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init)
+CLOCKSOURCE_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init);
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index 9d8f4f1..d5e119c 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -5,7 +5,7 @@ obj-$(CONFIG_ARCH_EXYNOS) += exynos-combiner.o
obj-$(CONFIG_ARCH_MXS) += irq-mxs.o
obj-$(CONFIG_METAG) += irq-metag-ext.o
obj-$(CONFIG_METAG_PERFCOUNTER_IRQS) += irq-metag.o
-obj-$(CONFIG_ARCH_SUNXI) += irq-sunxi.o
+obj-$(CONFIG_ARCH_SUNXI) += irq-sun4i.o
obj-$(CONFIG_ARCH_SPEAR3XX) += spear-shirq.o
obj-$(CONFIG_ARM_GIC) += irq-gic.o
obj-$(CONFIG_ARM_VIC) += irq-vic.o
diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c
new file mode 100644
index 0000000..b66d4ae
--- /dev/null
+++ b/drivers/irqchip/irq-sun4i.c
@@ -0,0 +1,149 @@
+/*
+ * Allwinner A1X SoCs IRQ chip driver.
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * Based on code from
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ * Benn Huang <benn@allwinnertech.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
+#include <asm/exception.h>
+#include <asm/mach/irq.h>
+
+#include "irqchip.h"
+
+#define SUN4I_IRQ_VECTOR_REG 0x00
+#define SUN4I_IRQ_PROTECTION_REG 0x08
+#define SUN4I_IRQ_NMI_CTRL_REG 0x0c
+#define SUN4I_IRQ_PENDING_REG(x) (0x10 + 0x4 * x)
+#define SUN4I_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x)
+#define SUN4I_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x)
+#define SUN4I_IRQ_MASK_REG(x) (0x50 + 0x4 * x)
+
+static void __iomem *sun4i_irq_base;
+static struct irq_domain *sun4i_irq_domain;
+
+static asmlinkage void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs);
+
+void sun4i_irq_ack(struct irq_data *irqd)
+{
+ unsigned int irq = irqd_to_hwirq(irqd);
+ unsigned int irq_off = irq % 32;
+ int reg = irq / 32;
+ u32 val;
+
+ val = readl(sun4i_irq_base + SUN4I_IRQ_PENDING_REG(reg));
+ writel(val | (1 << irq_off),
+ sun4i_irq_base + SUN4I_IRQ_PENDING_REG(reg));
+}
+
+static void sun4i_irq_mask(struct irq_data *irqd)
+{
+ unsigned int irq = irqd_to_hwirq(irqd);
+ unsigned int irq_off = irq % 32;
+ int reg = irq / 32;
+ u32 val;
+
+ val = readl(sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ writel(val & ~(1 << irq_off),
+ sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+}
+
+static void sun4i_irq_unmask(struct irq_data *irqd)
+{
+ unsigned int irq = irqd_to_hwirq(irqd);
+ unsigned int irq_off = irq % 32;
+ int reg = irq / 32;
+ u32 val;
+
+ val = readl(sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ writel(val | (1 << irq_off),
+ sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+}
+
+static struct irq_chip sun4i_irq_chip = {
+ .name = "sun4i_irq",
+ .irq_ack = sun4i_irq_ack,
+ .irq_mask = sun4i_irq_mask,
+ .irq_unmask = sun4i_irq_unmask,
+};
+
+static int sun4i_irq_map(struct irq_domain *d, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ irq_set_chip_and_handler(virq, &sun4i_irq_chip,
+ handle_level_irq);
+ set_irq_flags(virq, IRQF_VALID | IRQF_PROBE);
+
+ return 0;
+}
+
+static struct irq_domain_ops sun4i_irq_ops = {
+ .map = sun4i_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
+static int __init sun4i_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ sun4i_irq_base = of_iomap(node, 0);
+ if (!sun4i_irq_base)
+ panic("%s: unable to map IC registers\n",
+ node->full_name);
+
+ /* Disable all interrupts */
+ writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(0));
+ writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(1));
+ writel(0, sun4i_irq_base + SUN4I_IRQ_ENABLE_REG(2));
+
+ /* Mask all the interrupts */
+ writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(0));
+ writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(1));
+ writel(0, sun4i_irq_base + SUN4I_IRQ_MASK_REG(2));
+
+ /* Clear all the pending interrupts */
+ writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(0));
+ writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(1));
+ writel(0xffffffff, sun4i_irq_base + SUN4I_IRQ_PENDING_REG(2));
+
+ /* Enable protection mode */
+ writel(0x01, sun4i_irq_base + SUN4I_IRQ_PROTECTION_REG);
+
+ /* Configure the external interrupt source type */
+ writel(0x00, sun4i_irq_base + SUN4I_IRQ_NMI_CTRL_REG);
+
+ sun4i_irq_domain = irq_domain_add_linear(node, 3 * 32,
+ &sun4i_irq_ops, NULL);
+ if (!sun4i_irq_domain)
+ panic("%s: unable to create IRQ domain\n", node->full_name);
+
+ set_handle_irq(sun4i_handle_irq);
+
+ return 0;
+}
+IRQCHIP_DECLARE(allwinner_sun4i_ic, "allwinner,sun4i-ic", sun4i_of_init);
+
+static asmlinkage void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs)
+{
+ u32 irq, hwirq;
+
+ hwirq = readl(sun4i_irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
+ while (hwirq != 0) {
+ irq = irq_find_mapping(sun4i_irq_domain, hwirq);
+ handle_IRQ(irq, regs);
+ hwirq = readl(sun4i_irq_base + SUN4I_IRQ_VECTOR_REG) >> 2;
+ }
+}
diff --git a/drivers/irqchip/irq-sunxi.c b/drivers/irqchip/irq-sunxi.c
deleted file mode 100644
index 10974fa..0000000
--- a/drivers/irqchip/irq-sunxi.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * Allwinner A1X SoCs IRQ chip driver.
- *
- * Copyright (C) 2012 Maxime Ripard
- *
- * Maxime Ripard <maxime.ripard@free-electrons.com>
- *
- * Based on code from
- * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
- * Benn Huang <benn@allwinnertech.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-
-#include <linux/irqchip/sunxi.h>
-
-#define SUNXI_IRQ_VECTOR_REG 0x00
-#define SUNXI_IRQ_PROTECTION_REG 0x08
-#define SUNXI_IRQ_NMI_CTRL_REG 0x0c
-#define SUNXI_IRQ_PENDING_REG(x) (0x10 + 0x4 * x)
-#define SUNXI_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x)
-#define SUNXI_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x)
-#define SUNXI_IRQ_MASK_REG(x) (0x50 + 0x4 * x)
-
-static void __iomem *sunxi_irq_base;
-static struct irq_domain *sunxi_irq_domain;
-
-void sunxi_irq_ack(struct irq_data *irqd)
-{
- unsigned int irq = irqd_to_hwirq(irqd);
- unsigned int irq_off = irq % 32;
- int reg = irq / 32;
- u32 val;
-
- val = readl(sunxi_irq_base + SUNXI_IRQ_PENDING_REG(reg));
- writel(val | (1 << irq_off),
- sunxi_irq_base + SUNXI_IRQ_PENDING_REG(reg));
-}
-
-static void sunxi_irq_mask(struct irq_data *irqd)
-{
- unsigned int irq = irqd_to_hwirq(irqd);
- unsigned int irq_off = irq % 32;
- int reg = irq / 32;
- u32 val;
-
- val = readl(sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
- writel(val & ~(1 << irq_off),
- sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
-}
-
-static void sunxi_irq_unmask(struct irq_data *irqd)
-{
- unsigned int irq = irqd_to_hwirq(irqd);
- unsigned int irq_off = irq % 32;
- int reg = irq / 32;
- u32 val;
-
- val = readl(sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
- writel(val | (1 << irq_off),
- sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(reg));
-}
-
-static struct irq_chip sunxi_irq_chip = {
- .name = "sunxi_irq",
- .irq_ack = sunxi_irq_ack,
- .irq_mask = sunxi_irq_mask,
- .irq_unmask = sunxi_irq_unmask,
-};
-
-static int sunxi_irq_map(struct irq_domain *d, unsigned int virq,
- irq_hw_number_t hw)
-{
- irq_set_chip_and_handler(virq, &sunxi_irq_chip,
- handle_level_irq);
- set_irq_flags(virq, IRQF_VALID | IRQF_PROBE);
-
- return 0;
-}
-
-static struct irq_domain_ops sunxi_irq_ops = {
- .map = sunxi_irq_map,
- .xlate = irq_domain_xlate_onecell,
-};
-
-static int __init sunxi_of_init(struct device_node *node,
- struct device_node *parent)
-{
- sunxi_irq_base = of_iomap(node, 0);
- if (!sunxi_irq_base)
- panic("%s: unable to map IC registers\n",
- node->full_name);
-
- /* Disable all interrupts */
- writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(0));
- writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(1));
- writel(0, sunxi_irq_base + SUNXI_IRQ_ENABLE_REG(2));
-
- /* Mask all the interrupts */
- writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(0));
- writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(1));
- writel(0, sunxi_irq_base + SUNXI_IRQ_MASK_REG(2));
-
- /* Clear all the pending interrupts */
- writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(0));
- writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(1));
- writel(0xffffffff, sunxi_irq_base + SUNXI_IRQ_PENDING_REG(2));
-
- /* Enable protection mode */
- writel(0x01, sunxi_irq_base + SUNXI_IRQ_PROTECTION_REG);
-
- /* Configure the external interrupt source type */
- writel(0x00, sunxi_irq_base + SUNXI_IRQ_NMI_CTRL_REG);
-
- sunxi_irq_domain = irq_domain_add_linear(node, 3 * 32,
- &sunxi_irq_ops, NULL);
- if (!sunxi_irq_domain)
- panic("%s: unable to create IRQ domain\n", node->full_name);
-
- return 0;
-}
-
-static struct of_device_id sunxi_irq_dt_ids[] __initconst = {
- { .compatible = "allwinner,sunxi-ic", .data = sunxi_of_init },
- { }
-};
-
-void __init sunxi_init_irq(void)
-{
- of_irq_init(sunxi_irq_dt_ids);
-}
-
-asmlinkage void __exception_irq_entry sunxi_handle_irq(struct pt_regs *regs)
-{
- u32 irq, hwirq;
-
- hwirq = readl(sunxi_irq_base + SUNXI_IRQ_VECTOR_REG) >> 2;
- while (hwirq != 0) {
- irq = irq_find_mapping(sunxi_irq_domain, hwirq);
- handle_IRQ(irq, regs);
- hwirq = readl(sunxi_irq_base + SUNXI_IRQ_VECTOR_REG) >> 2;
- }
-}
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 08ed5e1..192d6d1 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -332,16 +332,23 @@ extern int clocksource_mmio_init(void __iomem *, const char *,
extern int clocksource_i8253_init(void);
+struct device_node;
+typedef void(*clocksource_of_init_fn)(struct device_node *);
#ifdef CONFIG_CLKSRC_OF
extern void clocksource_of_init(void);
#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
static const struct of_device_id __clksrc_of_table_##name \
__used __section(__clksrc_of_table) \
- = { .compatible = compat, .data = fn };
+ = { .compatible = compat, \
+ .data = (fn == (clocksource_of_init_fn)NULL) ? fn : fn }
#else
static inline void clocksource_of_init(void) {}
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn)
+#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
+ static const struct of_device_id __clksrc_of_table_##name \
+ __attribute__((unused)) \
+ = { .compatible = compat, \
+ .data = (fn == (clocksource_of_init_fn)NULL) ? fn : fn }
#endif
#endif /* _LINUX_CLOCKSOURCE_H */
diff --git a/include/linux/irqchip/sunxi.h b/include/linux/irqchip/sunxi.h
deleted file mode 100644
index 1fe2c22..0000000
--- a/include/linux/irqchip/sunxi.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright 2012 Maxime Ripard
- *
- * Maxime Ripard <maxime.ripard@free-electrons.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#ifndef __LINUX_IRQCHIP_SUNXI_H
-#define __LINUX_IRQCHIP_SUNXI_H
-
-#include <asm/exception.h>
-
-extern void sunxi_init_irq(void);
-
-extern asmlinkage void __exception_irq_entry sunxi_handle_irq(
- struct pt_regs *regs);
-
-#endif
diff --git a/include/linux/sunxi_timer.h b/include/linux/sunxi_timer.h
deleted file mode 100644
index 1808178..0000000
--- a/include/linux/sunxi_timer.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright 2012 Maxime Ripard
- *
- * Maxime Ripard <maxime.ripard@free-electrons.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#ifndef __SUNXI_TIMER_H
-#define __SUNXI_TIMER_H
-
-#include <asm/mach/time.h>
-
-void sunxi_timer_init(void);
-
-#endif
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