1 files changed, 119 insertions, 115 deletions

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index b8ad6e632bb..43d03fbf4c0 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -41,12 +41,11 @@
 #include <linux/of_irq.h>
 #include <linux/platform_device.h>
 #include <linux/platform_data/dmtimer-omap.h>
+#include <linux/sched_clock.h>
 
 #include <asm/mach/time.h>
 #include <asm/smp_twd.h>
-#include <asm/sched_clock.h>
 
-#include <asm/arch_timer.h>
 #include "omap_hwmod.h"
 #include "omap_device.h"
 #include <plat/counter-32k.h>
@@ -56,15 +55,7 @@
 #include "soc.h"
 #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 OMAP2_32K_SOURCE	"func_32k_ck"
-#define OMAP3_32K_SOURCE	"omap_32k_fck"
-#define OMAP4_32K_SOURCE	"sys_32k_ck"
+#include "omap-secure.h"
 
 #define REALTIME_COUNTER_BASE				0x48243200
 #define INCREMENTER_NUMERATOR_OFFSET			0x10
@@ -76,6 +67,15 @@
 static struct omap_dm_timer clkev;
 static struct clock_event_device clockevent_gpt;
 
+#ifdef CONFIG_SOC_HAS_REALTIME_COUNTER
+static unsigned long arch_timer_freq;
+
+void set_cntfreq(void)
+{
+	omap_smc1(OMAP5_DRA7_MON_SET_CNTFRQ_INDEX, arch_timer_freq);
+}
+#endif
+
 static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
 {
 	struct clock_event_device *evt = &clockevent_gpt;
@@ -88,7 +88,7 @@ static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
 
 static struct irqaction omap2_gp_timer_irq = {
 	.name		= "gp_timer",
-	.flags		= IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.flags		= IRQF_TIMER | IRQF_IRQPOLL,
 	.handler	= omap2_gp_timer_interrupt,
 };
 
@@ -129,9 +129,7 @@ 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,
-	.shift		= 32,
 	.rating		= 300,
 	.set_next_event	= omap2_gp_timer_set_next_event,
 	.set_mode	= omap2_gp_timer_set_mode,
@@ -144,7 +142,12 @@ static struct property device_disabled = {
 };
 
 static struct of_device_id omap_timer_match[] __initdata = {
-	{ .compatible = "ti,omap2-timer", },
+	{ .compatible = "ti,omap2420-timer", },
+	{ .compatible = "ti,omap3430-timer", },
+	{ .compatible = "ti,omap4430-timer", },
+	{ .compatible = "ti,omap5430-timer", },
+	{ .compatible = "ti,am335x-timer", },
+	{ .compatible = "ti,am335x-timer-1ms", },
 	{ }
 };
 
@@ -171,6 +174,12 @@ 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;
 	}
@@ -215,20 +224,21 @@ 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;
+	const char *oh_name = NULL;
 	struct device_node *np;
 	struct omap_hwmod *oh;
 	struct resource irq, mem;
+	struct clk *src;
 	int r = 0;
 
 	if (of_have_populated_dt()) {
-		np = omap_get_timer_dt(omap_timer_match, NULL);
+		np = omap_get_timer_dt(omap_timer_match, property);
 		if (!np)
 			return -ENODEV;
 
@@ -244,10 +254,10 @@ 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 +265,8 @@ 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 +289,24 @@ 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 (IS_ERR_VALUE(r))
-				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 +330,7 @@ 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 +340,8 @@ 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;
@@ -336,25 +349,19 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
 
 	__omap_dm_timer_int_enable(&clkev, OMAP_TIMER_INT_OVERFLOW);
 
-	clockevent_gpt.mult = div_sc(clkev.rate, NSEC_PER_SEC,
-				     clockevent_gpt.shift);
-	clockevent_gpt.max_delta_ns =
-		clockevent_delta2ns(0xffffffff, &clockevent_gpt);
-	clockevent_gpt.min_delta_ns =
-		clockevent_delta2ns(3, &clockevent_gpt);
-		/* Timer internal resynch latency. */
-
 	clockevent_gpt.cpumask = cpu_possible_mask;
 	clockevent_gpt.irq = omap_dm_timer_get_irq(&clkev);
-	clockevents_register_device(&clockevent_gpt);
+	clockevents_config_and_register(&clockevent_gpt, clkev.rate,
+					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 */
 static struct omap_dm_timer clksrc;
-static bool use_gptimer_clksrc;
+static bool use_gptimer_clksrc __initdata;
 
 /*
  * clocksource
@@ -366,14 +373,13 @@ 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),
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
-static u32 notrace dmtimer_read_sched_clock(void)
+static u64 notrace dmtimer_read_sched_clock(void)
 {
 	if (clksrc.reserved)
 		return __omap_dm_timer_read_counter(&clksrc,
@@ -449,27 +455,30 @@ 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);
 
 	__omap_dm_timer_load_start(&clksrc,
 				   OMAP_TIMER_CTRL_ST | OMAP_TIMER_CTRL_AR, 0,
 				   OMAP_TIMER_NONPOSTED);
-	setup_sched_clock(dmtimer_read_sched_clock, 32, clksrc.rate);
+	sched_clock_register(dmtimer_read_sched_clock, 32, clksrc.rate);
 
 	if (clocksource_register_hz(&clocksource_gpt, clksrc.rate))
 		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
@@ -494,7 +503,7 @@ static void __init realtime_counter_init(void)
 		pr_err("%s: ioremap failed\n", __func__);
 		return;
 	}
-	sys_clk = clk_get(NULL, "sys_clkin_ck");
+	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);
@@ -516,6 +525,10 @@ static void __init realtime_counter_init(void)
 		num = 8;
 		den = 25;
 		break;
+	case 20000000:
+		num = 192;
+		den = 625;
+		break;
 	case 2600000:
 		num = 384;
 		den = 1625;
@@ -533,15 +546,18 @@ static void __init realtime_counter_init(void)
 	}
 
 	/* Program numerator and denumerator registers */
-	reg = __raw_readl(base + INCREMENTER_NUMERATOR_OFFSET) &
+	reg = readl_relaxed(base + INCREMENTER_NUMERATOR_OFFSET) &
 			NUMERATOR_DENUMERATOR_MASK;
 	reg |= num;
-	__raw_writel(reg, base + INCREMENTER_NUMERATOR_OFFSET);
+	writel_relaxed(reg, base + INCREMENTER_NUMERATOR_OFFSET);
 
-	reg = __raw_readl(base + INCREMENTER_NUMERATOR_OFFSET) &
+	reg = readl_relaxed(base + INCREMENTER_DENUMERATOR_RELOAD_OFFSET) &
 			NUMERATOR_DENUMERATOR_MASK;
 	reg |= den;
-	__raw_writel(reg, base + INCREMENTER_DENUMERATOR_RELOAD_OFFSET);
+	writel_relaxed(reg, base + INCREMENTER_DENUMERATOR_RELOAD_OFFSET);
+
+	arch_timer_freq = (rate / den) * num;
+	set_cntfreq();
 
 	iounmap(base);
 }
@@ -551,62 +567,59 @@ 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)			\
-static void __init omap##name##_gptimer_timer_init(void)		\
+			       clksrc_nr, clksrc_src, clksrc_prop)	\
+void __init omap##name##_gptimer_timer_init(void)			\
 {									\
+	omap_clk_init();					\
 	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)			\
-static void __init omap##name##_sync32k_timer_init(void)		\
+				clksrc_nr, clksrc_src, clksrc_prop)	\
+void __init omap##name##_sync32k_timer_init(void)		\
 {									\
+	omap_clk_init();					\
 	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();			\
 }
 
-#define OMAP_SYS_TIMER(name, clksrc)					\
-struct sys_timer omap##name##_timer = {					\
-	.init	= omap##name##_##clksrc##_timer_init,			\
-};
-
 #ifdef CONFIG_ARCH_OMAP2
-OMAP_SYS_32K_TIMER_INIT(2, 1, OMAP2_32K_SOURCE, "ti,timer-alwon",
-			2, OMAP2_MPU_SOURCE);
-OMAP_SYS_TIMER(2, sync32k);
+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_TIMER(3, sync32k);
-OMAP_SYS_32K_TIMER_INIT(3_secure, 12, OMAP3_32K_SOURCE, "ti,timer-secure",
-			2, OMAP3_MPU_SOURCE);
-OMAP_SYS_TIMER(3_secure, sync32k);
-OMAP_SYS_GP_TIMER_INIT(3_gp, 1, OMAP3_MPU_SOURCE, "ti,timer-alwon",
-		       2, OMAP3_MPU_SOURCE);
-OMAP_SYS_TIMER(3_gp, gptimer);
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM43XX)
+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);
-OMAP_SYS_TIMER(3_am33xx, gptimer);
-#endif /* CONFIG_SOC_AM33XX */
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM33XX) || \
+	defined(CONFIG_SOC_AM43XX)
+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) || \
+	defined(CONFIG_SOC_DRA7XX)
+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
+#ifdef CONFIG_HAVE_ARM_TWD
 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, OMAP44XX_LOCAL_TWD_BASE, 29);
-static void __init omap4_local_timer_init(void)
+void __init omap4_local_timer_init(void)
 {
 	omap4_sync32k_timer_init();
 	/* Local timers are not supprted on OMAP4430 ES1.0 */
@@ -614,7 +627,7 @@ static void __init omap4_local_timer_init(void)
 		int err;
 
 		if (of_have_populated_dt()) {
-			twd_local_timer_of_register();
+			clocksource_of_init();
 			return;
 		}
 
@@ -623,31 +636,23 @@ static void __init omap4_local_timer_init(void)
 			pr_err("twd_local_timer_register failed %d\n", err);
 	}
 }
-#else /* CONFIG_LOCAL_TIMERS */
-static void __init omap4_local_timer_init(void)
+#else
+void __init omap4_local_timer_init(void)
 {
 	omap4_sync32k_timer_init();
 }
-#endif /* CONFIG_LOCAL_TIMERS */
-OMAP_SYS_TIMER(4, local);
+#endif /* CONFIG_HAVE_ARM_TWD */
 #endif /* CONFIG_ARCH_OMAP4 */
 
-#ifdef CONFIG_SOC_OMAP5
-OMAP_SYS_32K_TIMER_INIT(5, 1, OMAP4_32K_SOURCE, "ti,timer-alwon",
-			2, OMAP4_MPU_SOURCE);
-static void __init omap5_realtime_timer_init(void)
+#if defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX)
+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();
-	if (err)
-		pr_err("%s: arch_timer_register failed %d\n", __func__, err);
+	clocksource_of_init();
 }
-OMAP_SYS_TIMER(5, realtime);
-#endif /* CONFIG_SOC_OMAP5 */
+#endif /* CONFIG_SOC_OMAP5 || CONFIG_SOC_DRA7XX */
 
 /**
  * omap_timer_init - build and register timer device with an
@@ -702,8 +707,7 @@ static int __init omap_timer_init(struct omap_hwmod *oh, void *unused)
 	pdata->timer_errata = omap_dm_timer_get_errata();
 	pdata->get_context_loss_count = omap_pm_get_dev_context_loss_count;
 
-	pdev = omap_device_build(name, id, oh, pdata, sizeof(*pdata),
-				 NULL, 0, 0);
+	pdev = omap_device_build(name, id, oh, pdata, sizeof(*pdata));
 
 	if (IS_ERR(pdev)) {
 		pr_err("%s: Can't build omap_device for %s: %s.\n",
@@ -738,7 +742,7 @@ static int __init omap2_dm_timer_init(void)
 
 	return 0;
 }
-arch_initcall(omap2_dm_timer_init);
+omap_arch_initcall(omap2_dm_timer_init);
 
 /**
  * omap2_override_clocksource - clocksource override with user configuration