Merge branch 'zynq/clksrc/cleanup' of git://git.xilinx.com/linux-xlnx…

… into next/drivers From Michal Simek <michal.simek@xilinx.com>: * 'zynq/clksrc/cleanup' of git://git.xilinx.com/linux-xlnx: arm: zynq: Move timer to generic location arm: zynq: Do not use xilinx specific function names arm: zynq: Move timer to clocksource interface arm: zynq: Use standard timer binding Signed-off-by: Arnd Bergmann <arnd@arndb.de>
git-mirror · Apr 8, 2013 · 6b5606e · 6b5606e
2 parents e9069cf + 4f0f234
commit 6b5606e
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diff --git a/Documentation/devicetree/bindings/timer/cadence,ttc-timer.txt b/Documentation/devicetree/bindings/timer/cadence,ttc-timer.txt
@@ -0,0 +1,17 @@
+Cadence TTC - Triple Timer Counter
+
+Required properties:
+- compatible : Should be "cdns,ttc".
+- reg : Specifies base physical address and size of the registers.
+- interrupts : A list of 3 interrupts; one per timer channel.
+- clocks: phandle to the source clock
+
+Example:
+
+ttc0: ttc0@f8001000 {
+	interrupt-parent = <&intc>;
+	interrupts = < 0 10 4 0 11 4 0 12 4 >;
+	compatible = "cdns,ttc";
+	reg = <0xF8001000 0x1000>;
+	clocks = <&cpu_clk 3>;
+};
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
@@ -1598,6 +1598,7 @@ config HAVE_ARM_ARCH_TIMER
 config HAVE_ARM_TWD
 	bool
 	depends on SMP
+	select CLKSRC_OF if OF
 	help
 	  This options enables support for the ARM timer and watchdog unit
 

diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -111,56 +111,23 @@
 		};
 
 		ttc0: ttc0@f8001000 {
-			#address-cells = <1>;
-			#size-cells = <0>;
-			compatible = "xlnx,ttc";
+			interrupt-parent = <&intc>;
+			interrupts = < 0 10 4 0 11 4 0 12 4 >;
+			compatible = "cdns,ttc";
 			reg = <0xF8001000 0x1000>;
 			clocks = <&cpu_clk 3>;
 			clock-names = "cpu_1x";
 			clock-ranges;
-
-			ttc0_0: ttc0.0 {
-				status = "disabled";
-				reg = <0>;
-				interrupts = <0 10 4>;
-			};
-			ttc0_1: ttc0.1 {
-				status = "disabled";
-				reg = <1>;
-				interrupts = <0 11 4>;
-			};
-			ttc0_2: ttc0.2 {
-				status = "disabled";
-				reg = <2>;
-				interrupts = <0 12 4>;
-			};
 		};
 
 		ttc1: ttc1@f8002000 {
-			#interrupt-parent = <&intc>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-			compatible = "xlnx,ttc";
+			interrupt-parent = <&intc>;
+			interrupts = < 0 37 4 0 38 4 0 39 4 >;
+			compatible = "cdns,ttc";
 			reg = <0xF8002000 0x1000>;
 			clocks = <&cpu_clk 3>;
 			clock-names = "cpu_1x";
 			clock-ranges;
-
-			ttc1_0: ttc1.0 {
-				status = "disabled";
-				reg = <0>;
-				interrupts = <0 37 4>;
-			};
-			ttc1_1: ttc1.1 {
-				status = "disabled";
-				reg = <1>;
-				interrupts = <0 38 4>;
-			};
-			ttc1_2: ttc1.2 {
-				status = "disabled";
-				reg = <2>;
-				interrupts = <0 39 4>;
-			};
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts
@@ -32,13 +32,3 @@
 &ps_clk {
 	clock-frequency = <33333330>;
 };
-
-&ttc0_0 {
-	status = "ok";
-	compatible = "xlnx,ttc-counter-clocksource";
-};
-
-&ttc0_1 {
-	status = "ok";
-	compatible = "xlnx,ttc-counter-clockevent";
-};
diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h
@@ -34,12 +34,4 @@ struct twd_local_timer name __initdata = {	\
 
 int twd_local_timer_register(struct twd_local_timer *);
 
-#ifdef CONFIG_HAVE_ARM_TWD
-void twd_local_timer_of_register(void);
-#else
-static inline void twd_local_timer_of_register(void)
-{
-}
-#endif
-
 #endif
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
@@ -362,25 +362,13 @@ int __init twd_local_timer_register(struct twd_local_timer *tlt)
 }
 
 #ifdef CONFIG_OF
-const static struct of_device_id twd_of_match[] __initconst = {
-	{ .compatible = "arm,cortex-a9-twd-timer",	},
-	{ .compatible = "arm,cortex-a5-twd-timer",	},
-	{ .compatible = "arm,arm11mp-twd-timer",	},
-	{ },
-};
-
-void __init twd_local_timer_of_register(void)
+static void __init twd_local_timer_of_register(struct device_node *np)
 {
-	struct device_node *np;
 	int err;
 
 	if (!is_smp() || !setup_max_cpus)
 		return;
 
-	np = of_find_matching_node(NULL, twd_of_match);
-	if (!np)
-		return;
-
 	twd_ppi = irq_of_parse_and_map(np, 0);
 	if (!twd_ppi) {
 		err = -EINVAL;
@@ -398,4 +386,7 @@ void __init twd_local_timer_of_register(void)
 out:
 	WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
 }
+CLOCKSOURCE_OF_DECLARE(arm_twd_a9, "arm,cortex-a9-twd-timer", twd_local_timer_of_register);
+CLOCKSOURCE_OF_DECLARE(arm_twd_a5, "arm,cortex-a5-twd-timer", twd_local_timer_of_register);
+CLOCKSOURCE_OF_DECLARE(arm_twd_11mp, "arm,arm11mp-twd-timer", twd_local_timer_of_register);
 #endif
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
@@ -32,7 +32,6 @@
 #include <asm/cacheflush.h>
 #include <asm/cputype.h>
 #include <asm/smp_plat.h>
-#include <asm/smp_twd.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/timer-sp.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -119,10 +118,10 @@ static void __init highbank_timer_init(void)
 	sp804_clocksource_and_sched_clock_init(timer_base + 0x20, "timer1");
 	sp804_clockevents_init(timer_base, irq, "timer0");
 
-	twd_local_timer_of_register();
-
 	arch_timer_of_register();
 	arch_timer_sched_clock_init();
+
+	clocksource_of_init();
 }
 
 static void highbank_power_off(void)

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
@@ -12,6 +12,7 @@
 
 #include <linux/clk.h>
 #include <linux/clkdev.h>
+#include <linux/clocksource.h>
 #include <linux/cpu.h>
 #include <linux/delay.h>
 #include <linux/export.h>
@@ -28,11 +29,9 @@
 #include <linux/regmap.h>
 #include <linux/micrel_phy.h>
 #include <linux/mfd/syscon.h>
-#include <asm/smp_twd.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
-#include <asm/mach/time.h>
 #include <asm/system_misc.h>
 
 #include "common.h"
@@ -292,7 +291,7 @@ static void __init imx6q_init_irq(void)
 static void __init imx6q_timer_init(void)
 {
 	mx6q_clocks_init();
-	twd_local_timer_of_register();
+	clocksource_of_init();
 	imx_print_silicon_rev("i.MX6Q", imx6q_revision());
 }
 

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
@@ -597,7 +597,7 @@ void __init omap4_local_timer_init(void)
 		int err;
 
 		if (of_have_populated_dt()) {
-			twd_local_timer_of_register();
+			clocksource_of_init();
 			return;
 		}
 

diff --git a/arch/arm/mach-spear13xx/spear13xx.c b/arch/arm/mach-spear13xx/spear13xx.c
@@ -15,12 +15,12 @@
 
 #include <linux/amba/pl022.h>
 #include <linux/clk.h>
+#include <linux/clocksource.h>
 #include <linux/dw_dmac.h>
 #include <linux/err.h>
 #include <linux/of.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/map.h>
-#include <asm/smp_twd.h>
 #include <mach/dma.h>
 #include <mach/generic.h>
 #include <mach/spear.h>
@@ -179,5 +179,5 @@ void __init spear13xx_timer_init(void)
 	clk_put(pclk);
 
 	spear_setup_of_timer();
-	twd_local_timer_of_register();
+	clocksource_of_init();
 }
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
@@ -7,6 +7,7 @@
 #include <linux/io.h>
 #include <linux/errno.h>
 #include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/clocksource.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/platform_data/clocksource-nomadik-mtu.h>
@@ -32,7 +33,7 @@ static void __init ux500_twd_init(void)
 	twd_local_timer = &u8500_twd_local_timer;
 
 	if (of_have_populated_dt())
-		twd_local_timer_of_register();
+		clocksource_of_init();
 	else {
 		err = twd_local_timer_register(twd_local_timer);
 		if (err)

diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
@@ -5,6 +5,7 @@
 #include <linux/amba/bus.h>
 #include <linux/amba/mmci.h>
 #include <linux/io.h>
+#include <linux/clocksource.h>
 #include <linux/smp.h>
 #include <linux/init.h>
 #include <linux/irqchip.h>
@@ -25,7 +26,6 @@
 #include <asm/arch_timer.h>
 #include <asm/mach-types.h>
 #include <asm/sizes.h>
-#include <asm/smp_twd.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
@@ -435,6 +435,7 @@ static void __init v2m_dt_timer_init(void)
 
 	vexpress_clk_of_init();
 
+	clocksource_of_init();
 	do {
 		node = of_find_compatible_node(node, NULL, "arm,sp804");
 	} while (node && vexpress_get_site_by_node(node) != VEXPRESS_SITE_MB);
@@ -445,8 +446,7 @@ static void __init v2m_dt_timer_init(void)
 				irq_of_parse_and_map(node, 0));
 	}
 
-	if (arch_timer_of_register() != 0)
-		twd_local_timer_of_register();
+	arch_timer_of_register();
 
 	if (arch_timer_sched_clock_init() != 0)
 		versatile_sched_clock_init(vexpress_get_24mhz_clock_base(),

diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
@@ -9,5 +9,6 @@ config ARCH_ZYNQ
 	select MIGHT_HAVE_CACHE_L2X0
 	select USE_OF
 	select SPARSE_IRQ
+	select CADENCE_TTC_TIMER
 	help
 	  Support for Xilinx Zynq ARM Cortex A9 Platform
diff --git a/arch/arm/mach-zynq/Makefile b/arch/arm/mach-zynq/Makefile
@@ -3,4 +3,4 @@
 #
 
 # Common support
-obj-y				:= common.o timer.o
+obj-y				:= common.o
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
@@ -20,6 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/clk/zynq.h>
+#include <linux/clocksource.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
@@ -77,7 +78,7 @@ static void __init xilinx_zynq_timer_init(void)
 
 	xilinx_zynq_clocks_init(slcr);
 
-	xttcps_timer_init();
+	clocksource_of_init();
 }
 
 /**

diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h
@@ -17,6 +17,4 @@
 #ifndef __MACH_ZYNQ_COMMON_H__
 #define __MACH_ZYNQ_COMMON_H__
 
-void __init xttcps_timer_init(void);
-
 #endif