summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/timer.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/timer.c')
-rw-r--r--arch/arm/mach-omap2/timer.c143
1 files changed, 75 insertions, 68 deletions
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 2bdd4cf17a8..f8b23b8040d 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -46,7 +46,6 @@
#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>
@@ -57,15 +56,6 @@
#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 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
@@ -129,7 +119,6 @@ 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,
@@ -143,7 +132,12 @@ 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", },
{ }
};
@@ -170,6 +164,12 @@ 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;
}
@@ -214,16 +214,17 @@ 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()) {
@@ -243,10 +244,10 @@ 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;
}
@@ -254,6 +255,8 @@ 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);
@@ -276,24 +279,24 @@ 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);
@@ -317,6 +320,7 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
{
int res;
+ clkev.id = gptimer_id;
clkev.errata = omap_dm_timer_get_errata();
/*
@@ -326,8 +330,8 @@ 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;
@@ -341,8 +345,8 @@ 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 */
@@ -359,7 +363,6 @@ 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),
@@ -442,13 +445,16 @@ 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);
@@ -461,8 +467,8 @@ 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
@@ -487,7 +493,7 @@ 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);
@@ -544,49 +550,56 @@ 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) \
{ \
+ if (omap_clk_init) \
+ 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) \
+ clksrc_nr, clksrc_src, clksrc_prop) \
void __init omap##name##_sync32k_timer_init(void) \
{ \
+ if (omap_clk_init) \
+ 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(); \
}
#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)
@@ -597,7 +610,7 @@ void __init omap4_local_timer_init(void)
int err;
if (of_have_populated_dt()) {
- twd_local_timer_of_register();
+ clocksource_of_init();
return;
}
@@ -615,18 +628,12 @@ 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, OMAP4_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();
- if (err)
- pr_err("%s: arch_timer_register failed %d\n", __func__, err);
+ clocksource_of_init();
}
#endif /* CONFIG_SOC_OMAP5 */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 02:39:35 +0000