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

1 files changed, 63 insertions, 61 deletions

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 06cbb49cc976..858ec7c17d56 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();