Convert dmtimers static array in functions into list structure. Please note that the static arrays will be completely removed in subsequent patches when dmtimer is converted to platform driver.
Signed-off-by: Tarun Kanti DebBarma <[email protected]> --- arch/arm/plat-omap/dmtimer.c | 67 +++++++++++++++++++++++------------------- 1 files changed, 37 insertions(+), 30 deletions(-) diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c index 10daa9d..124fd21 100644 --- a/arch/arm/plat-omap/dmtimer.c +++ b/arch/arm/plat-omap/dmtimer.c @@ -168,6 +168,7 @@ struct omap_dm_timer { unsigned enabled:1; unsigned posted:1; struct platform_device *pdev; + struct list_head node; }; static int dm_timer_count; @@ -290,7 +291,8 @@ static struct omap_dm_timer *dm_timers; static const char **dm_source_names; static struct clk **dm_source_clocks; -static spinlock_t dm_timer_lock; +static LIST_HEAD(omap_timer_list); +static DEFINE_SPINLOCK(dm_timer_lock); /* * Reads timer registers in posted and non-posted mode. The posted mode bit @@ -340,7 +342,7 @@ static void omap_dm_timer_reset(struct omap_dm_timer *timer) { u32 l; - if (!cpu_class_is_omap2() || timer != &dm_timers[0]) { + if (!cpu_class_is_omap2() || timer->id != 1) { omap_dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG, 0x06); omap_dm_timer_wait_for_reset(timer); } @@ -371,23 +373,24 @@ static void omap_dm_timer_prepare(struct omap_dm_timer *timer) struct omap_dm_timer *omap_dm_timer_request(void) { - struct omap_dm_timer *timer = NULL; + struct omap_dm_timer *timer = NULL, *t; unsigned long flags; - int i; spin_lock_irqsave(&dm_timer_lock, flags); - for (i = 0; i < dm_timer_count; i++) { - if (dm_timers[i].reserved) + list_for_each_entry(t, &omap_timer_list, node) { + if (t->reserved) continue; - timer = &dm_timers[i]; + timer = t; timer->reserved = 1; break; } spin_unlock_irqrestore(&dm_timer_lock, flags); - if (timer != NULL) + if (timer) omap_dm_timer_prepare(timer); + else + pr_debug("%s: free timer not available.\n", __func__); return timer; } @@ -395,23 +398,23 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_request); struct omap_dm_timer *omap_dm_timer_request_specific(int id) { - struct omap_dm_timer *timer; + struct omap_dm_timer *timer = NULL, *t; unsigned long flags; spin_lock_irqsave(&dm_timer_lock, flags); - if (id <= 0 || id > dm_timer_count || dm_timers[id-1].reserved) { - spin_unlock_irqrestore(&dm_timer_lock, flags); - printk("BUG: warning at %s:%d/%s(): unable to get timer %d\n", - __FILE__, __LINE__, __func__, id); - dump_stack(); - return NULL; + list_for_each_entry(t, &omap_timer_list, node) { + if (t->id == id && !t->reserved) { + timer = t; + timer->reserved = 1; + break; + } } - - timer = &dm_timers[id-1]; - timer->reserved = 1; spin_unlock_irqrestore(&dm_timer_lock, flags); - omap_dm_timer_prepare(timer); + if (timer) + omap_dm_timer_prepare(timer); + else + pr_debug("%s: timer%d not available.\n", __func__, id); return timer; } @@ -474,24 +477,29 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_get_irq); */ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask) { - int i; + int i = 0; + struct omap_dm_timer *timer = NULL; + unsigned long flags; /* If ARMXOR cannot be idled this function call is unnecessary */ if (!(inputmask & (1 << 1))) return inputmask; /* If any active timer is using ARMXOR return modified mask */ - for (i = 0; i < dm_timer_count; i++) { + spin_lock_irqsave(&dm_timer_lock, flags); + list_for_each_entry(timer, &omap_timer_list, node) { u32 l; - l = omap_dm_timer_read_reg(&dm_timers[i], OMAP_TIMER_CTRL_REG); + l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); if (l & OMAP_TIMER_CTRL_ST) { if (((omap_readl(MOD_CONF_CTRL_1) >> (i * 2)) & 0x03) == 0) inputmask &= ~(1 << 1); else inputmask &= ~(1 << 2); } + i++; } + spin_unlock_irqrestore(&dm_timer_lock, flags); return inputmask; } @@ -722,13 +730,9 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_write_counter); int omap_dm_timers_active(void) { - int i; - - for (i = 0; i < dm_timer_count; i++) { - struct omap_dm_timer *timer; - - timer = &dm_timers[i]; + struct omap_dm_timer *timer; + list_for_each_entry(timer, &omap_timer_list, node) { if (!timer->enabled) continue; @@ -743,14 +747,13 @@ EXPORT_SYMBOL_GPL(omap_dm_timers_active); int __init omap_dm_timer_init(void) { + unsigned long flags; struct omap_dm_timer *timer; int i, map_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */ if (!(cpu_is_omap16xx() || cpu_class_is_omap2())) return -ENODEV; - spin_lock_init(&dm_timer_lock); - if (cpu_class_is_omap1()) { dm_timers = omap1_dm_timers; dm_timer_count = omap1_dm_timer_count; @@ -795,6 +798,10 @@ int __init omap_dm_timer_init(void) timer->fclk = clk_get(NULL, clk_name); } #endif + timer->id = i + 1; /* id starts from 1*/ + spin_lock_irqsave(&dm_timer_lock, flags); + list_add_tail(&timer->node, &omap_timer_list); + spin_unlock_irqrestore(&dm_timer_lock, flags); } return 0; -- 1.6.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
