Merge branch 'omap-timer-for-v3.10' of git://github.com/jonhunter/linux into omap-for-v3.10/timer

Conflicts:
	arch/arm/mach-omap2/timer.c

4 files changed, 66 insertions, 65 deletions

diff --git a/arch/arm/mach-omap2/board-cm-t3517.c b/arch/arm/mach-omap2/board-cm-t3517.c
index a66da80..8e0d76b 100644
--- a/arch/arm/mach-omap2/board-cm-t3517.c
+++ b/arch/arm/mach-omap2/board-cm-t3517.c
@@ -324,6 +324,6 @@ MACHINE_START(CM_T3517, "Compulab CM-T3517")
 	.handle_irq	= omap3_intc_handle_irq,
 	.init_machine	= cm_t3517_init,
 	.init_late	= am35xx_init_late,
-	.init_time	= omap3_gp_gptimer_timer_init,
+	.init_time	= omap3_gptimer_timer_init,
 	.restart	= omap3xxx_restart,
 MACHINE_END
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index e54a480..78813b3 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -140,7 +140,7 @@ DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
 	.init_irq	= omap_intc_of_init,
 	.handle_irq	= omap3_intc_handle_irq,
 	.init_machine	= omap_generic_init,
-	.init_time	= omap3_am33xx_gptimer_timer_init,
+	.init_time	= omap3_gptimer_timer_init,
 	.dt_compat	= am33xx_boards_compat,
 	.restart	= am33xx_restart,
 MACHINE_END
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 40f4a03..bf70e2b 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -82,8 +82,7 @@ extern void omap2_init_common_infrastructure(void);
 extern void omap2_sync32k_timer_init(void);
 extern void omap3_sync32k_timer_init(void);
 extern void omap3_secure_sync32k_timer_init(void);
-extern void omap3_gp_gptimer_timer_init(void);
-extern void omap3_am33xx_gptimer_timer_init(void);
+extern void omap3_gptimer_timer_init(void);
 extern void omap4_local_timer_init(void);
 extern void omap5_realtime_timer_init(void);
 
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 06cbb49..858ec7c 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -57,16 +57,6 @@
 #include "common.h"
 #include "powerdomain.h"
 
-/* Parent clocks, eventually these will come from the clock framework */
-
-#define OMAP2_MPU_SOURCE	"sys_ck"
-#define OMAP3_MPU_SOURCE	OMAP2_MPU_SOURCE
-#define OMAP4_MPU_SOURCE	"sys_clkin_ck"
-#define OMAP5_MPU_SOURCE	"sys_clkin"
-#define OMAP2_32K_SOURCE	"func_32k_ck"
-#define OMAP3_32K_SOURCE	"omap_32k_fck"
-#define OMAP4_32K_SOURCE	"sys_32k_ck"
-
 #define REALTIME_COUNTER_BASE				0x48243200
 #define INCREMENTER_NUMERATOR_OFFSET			0x10
 #define INCREMENTER_DENUMERATOR_RELOAD_OFFSET		0x14
@@ -130,7 +120,6 @@ static void omap2_gp_timer_set_mode(enum clock_event_mode mode,
 }
 
 static struct clock_event_device clockevent_gpt = {
-	.name		= "gp_timer",
 	.features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
 	.rating		= 300,
 	.set_next_event	= omap2_gp_timer_set_next_event,
@@ -171,6 +160,12 @@ static struct device_node * __init omap_get_timer_dt(struct of_device_id *match,
 		if (property && !of_get_property(np, property, NULL))
 			continue;
 
+		if (!property && (of_get_property(np, "ti,timer-alwon", NULL) ||
+				  of_get_property(np, "ti,timer-dsp", NULL) ||
+				  of_get_property(np, "ti,timer-pwm", NULL) ||
+				  of_get_property(np, "ti,timer-secure", NULL)))
+			continue;
+
 		of_add_property(np, &device_disabled);
 		return np;
 	}
@@ -215,16 +210,17 @@ static u32 __init omap_dm_timer_get_errata(void)
 }
 
 static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
-						int gptimer_id,
-						const char *fck_source,
-						const char *property,
-						int posted)
+					 const char *fck_source,
+					 const char *property,
+					 const char **timer_name,
+					 int posted)
 {
 	char name[10]; /* 10 = sizeof("gptXX_Xck0") */
 	const char *oh_name;
 	struct device_node *np;
 	struct omap_hwmod *oh;
 	struct resource irq, mem;
+	struct clk *src;
 	int r = 0;
 
 	if (of_have_populated_dt()) {
@@ -244,10 +240,10 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 
 		of_node_put(np);
 	} else {
-		if (omap_dm_timer_reserve_systimer(gptimer_id))
+		if (omap_dm_timer_reserve_systimer(timer->id))
 			return -ENODEV;
 
-		sprintf(name, "timer%d", gptimer_id);
+		sprintf(name, "timer%d", timer->id);
 		oh_name = name;
 	}
 
@@ -255,6 +251,8 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 	if (!oh)
 		return -ENODEV;
 
+	*timer_name = oh->name;
+
 	if (!of_have_populated_dt()) {
 		r = omap_hwmod_get_resource_byname(oh, IORESOURCE_IRQ, NULL,
 						   &irq);
@@ -277,24 +275,24 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 	/* After the dmtimer is using hwmod these clocks won't be needed */
 	timer->fclk = clk_get(NULL, omap_hwmod_get_main_clk(oh));
 	if (IS_ERR(timer->fclk))
-		return -ENODEV;
+		return PTR_ERR(timer->fclk);
 
-	/* FIXME: Need to remove hard-coded test on timer ID */
-	if (gptimer_id != 12) {
-		struct clk *src;
-
-		src = clk_get(NULL, fck_source);
-		if (IS_ERR(src)) {
-			r = -EINVAL;
-		} else {
-			r = clk_set_parent(timer->fclk, src);
-			if (r < 0)
-				pr_warn("%s: %s cannot set source\n",
-					__func__, oh->name);
+	src = clk_get(NULL, fck_source);
+	if (IS_ERR(src))
+		return PTR_ERR(src);
+
+	if (clk_get_parent(timer->fclk) != src) {
+		r = clk_set_parent(timer->fclk, src);
+		if (r < 0) {
+			pr_warn("%s: %s cannot set source\n", __func__,
+				oh->name);
 			clk_put(src);
+			return r;
 		}
 	}
 
+	clk_put(src);
+
 	omap_hwmod_setup_one(oh_name);
 	omap_hwmod_enable(oh);
 	__omap_dm_timer_init_regs(timer);
@@ -318,6 +316,7 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
 {
 	int res;
 
+	clkev.id = gptimer_id;
 	clkev.errata = omap_dm_timer_get_errata();
 
 	/*
@@ -327,8 +326,8 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
 	 */
 	__omap_dm_timer_override_errata(&clkev, OMAP_TIMER_ERRATA_I103_I767);
 
-	res = omap_dm_timer_init_one(&clkev, gptimer_id, fck_source, property,
-				     OMAP_TIMER_POSTED);
+	res = omap_dm_timer_init_one(&clkev, fck_source, property,
+				     &clockevent_gpt.name, OMAP_TIMER_POSTED);
 	BUG_ON(res);
 
 	omap2_gp_timer_irq.dev_id = &clkev;
@@ -342,8 +341,8 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
 					3, /* Timer internal resynch latency */
 					0xffffffff);
 
-	pr_info("OMAP clockevent source: GPTIMER%d at %lu Hz\n",
-		gptimer_id, clkev.rate);
+	pr_info("OMAP clockevent source: %s at %lu Hz\n", clockevent_gpt.name,
+		clkev.rate);
 }
 
 /* Clocksource code */
@@ -360,7 +359,6 @@ static cycle_t clocksource_read_cycles(struct clocksource *cs)
 }
 
 static struct clocksource clocksource_gpt = {
-	.name		= "gp_timer",
 	.rating		= 300,
 	.read		= clocksource_read_cycles,
 	.mask		= CLOCKSOURCE_MASK(32),
@@ -443,13 +441,16 @@ static int __init __maybe_unused omap2_sync32k_clocksource_init(void)
 }
 
 static void __init omap2_gptimer_clocksource_init(int gptimer_id,
-						const char *fck_source)
+						  const char *fck_source,
+						  const char *property)
 {
 	int res;
 
+	clksrc.id = gptimer_id;
 	clksrc.errata = omap_dm_timer_get_errata();
 
-	res = omap_dm_timer_init_one(&clksrc, gptimer_id, fck_source, NULL,
+	res = omap_dm_timer_init_one(&clksrc, fck_source, property,
+				     &clocksource_gpt.name,
 				     OMAP_TIMER_NONPOSTED);
 	BUG_ON(res);
 
@@ -462,8 +463,8 @@ static void __init omap2_gptimer_clocksource_init(int gptimer_id,
 		pr_err("Could not register clocksource %s\n",
 			clocksource_gpt.name);
 	else
-		pr_info("OMAP clocksource: GPTIMER%d at %lu Hz\n",
-			gptimer_id, clksrc.rate);
+		pr_info("OMAP clocksource: %s at %lu Hz\n",
+			clocksource_gpt.name, clksrc.rate);
 }
 
 #ifdef CONFIG_SOC_HAS_REALTIME_COUNTER
@@ -488,7 +489,7 @@ static void __init realtime_counter_init(void)
 		pr_err("%s: ioremap failed\n", __func__);
 		return;
 	}
-	sys_clk = clk_get(NULL, OMAP5_MPU_SOURCE);
+	sys_clk = clk_get(NULL, "sys_clkin");
 	if (IS_ERR(sys_clk)) {
 		pr_err("%s: failed to get system clock handle\n", __func__);
 		iounmap(base);
@@ -545,49 +546,52 @@ static inline void __init realtime_counter_init(void)
 #endif
 
 #define OMAP_SYS_GP_TIMER_INIT(name, clkev_nr, clkev_src, clkev_prop,	\
-			       clksrc_nr, clksrc_src)			\
+			       clksrc_nr, clksrc_src, clksrc_prop)	\
 void __init omap##name##_gptimer_timer_init(void)			\
 {									\
 	omap_dmtimer_init();						\
 	omap2_gp_clockevent_init((clkev_nr), clkev_src, clkev_prop);	\
-	omap2_gptimer_clocksource_init((clksrc_nr), clksrc_src);	\
+	omap2_gptimer_clocksource_init((clksrc_nr), clksrc_src,		\
+					clksrc_prop);			\
 }
 
 #define OMAP_SYS_32K_TIMER_INIT(name, clkev_nr, clkev_src, clkev_prop,	\
-				clksrc_nr, clksrc_src)			\
+				clksrc_nr, clksrc_src, clksrc_prop)	\
 void __init omap##name##_sync32k_timer_init(void)		\
 {									\
 	omap_dmtimer_init();						\
 	omap2_gp_clockevent_init((clkev_nr), clkev_src, clkev_prop);	\
 	/* Enable the use of clocksource="gp_timer" kernel parameter */	\
 	if (use_gptimer_clksrc)						\
-		omap2_gptimer_clocksource_init((clksrc_nr), clksrc_src);\
+		omap2_gptimer_clocksource_init((clksrc_nr), clksrc_src,	\
+						clksrc_prop);		\
 	else								\
 		omap2_sync32k_clocksource_init();			\
 }
 
 #ifdef CONFIG_ARCH_OMAP2
-OMAP_SYS_32K_TIMER_INIT(2, 1, OMAP2_32K_SOURCE, "ti,timer-alwon",
-			2, OMAP2_MPU_SOURCE);
+OMAP_SYS_32K_TIMER_INIT(2, 1, "timer_32k_ck", "ti,timer-alwon",
+			2, "timer_sys_ck", NULL);
 #endif /* CONFIG_ARCH_OMAP2 */
 
 #ifdef CONFIG_ARCH_OMAP3
-OMAP_SYS_32K_TIMER_INIT(3, 1, OMAP3_32K_SOURCE, "ti,timer-alwon",
-			2, OMAP3_MPU_SOURCE);
-OMAP_SYS_32K_TIMER_INIT(3_secure, 12, OMAP3_32K_SOURCE, "ti,timer-secure",
-			2, OMAP3_MPU_SOURCE);
-OMAP_SYS_GP_TIMER_INIT(3_gp, 1, OMAP3_MPU_SOURCE, "ti,timer-alwon",
-		       2, OMAP3_MPU_SOURCE);
+OMAP_SYS_32K_TIMER_INIT(3, 1, "timer_32k_ck", "ti,timer-alwon",
+			2, "timer_sys_ck", NULL);
+OMAP_SYS_32K_TIMER_INIT(3_secure, 12, "secure_32k_fck", "ti,timer-secure",
+			2, "timer_sys_ck", NULL);
 #endif /* CONFIG_ARCH_OMAP3 */
 
-#ifdef CONFIG_SOC_AM33XX
-OMAP_SYS_GP_TIMER_INIT(3_am33xx, 1, OMAP4_MPU_SOURCE, "ti,timer-alwon",
-		       2, OMAP4_MPU_SOURCE);
-#endif /* CONFIG_SOC_AM33XX */
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM33XX)
+OMAP_SYS_GP_TIMER_INIT(3, 2, "timer_sys_ck", NULL,
+		       1, "timer_sys_ck", "ti,timer-alwon");
+#endif
+
+#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
+static OMAP_SYS_32K_TIMER_INIT(4, 1, "timer_32k_ck", "ti,timer-alwon",
+			       2, "sys_clkin_ck", NULL);
+#endif
 
 #ifdef CONFIG_ARCH_OMAP4
-OMAP_SYS_32K_TIMER_INIT(4, 1, OMAP4_32K_SOURCE, "ti,timer-alwon",
-			2, OMAP4_MPU_SOURCE);
 #ifdef CONFIG_LOCAL_TIMERS
 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, OMAP44XX_LOCAL_TWD_BASE, 29);
 void __init omap4_local_timer_init(void)
@@ -616,13 +620,11 @@ void __init omap4_local_timer_init(void)
 #endif /* CONFIG_ARCH_OMAP4 */
 
 #ifdef CONFIG_SOC_OMAP5
-OMAP_SYS_32K_TIMER_INIT(5, 1, OMAP4_32K_SOURCE, "ti,timer-alwon",
-			2, OMAP5_MPU_SOURCE);
 void __init omap5_realtime_timer_init(void)
 {
 	int err;
 
-	omap5_sync32k_timer_init();
+	omap4_sync32k_timer_init();
 	realtime_counter_init();
 
 	err = arch_timer_of_register();