diff options
| -rw-r--r-- | arch/x86/kernel/geode_32.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/mfgpt_32.c | 39 | ||||
| -rw-r--r-- | include/asm-x86/geode.h | 1 |
3 files changed, 28 insertions, 17 deletions
diff --git a/arch/x86/kernel/geode_32.c b/arch/x86/kernel/geode_32.c index 9c7f7d39596..9dad6ca6cd7 100644 --- a/arch/x86/kernel/geode_32.c +++ b/arch/x86/kernel/geode_32.c @@ -163,14 +163,11 @@ EXPORT_SYMBOL_GPL(geode_gpio_setup_event); static int __init geode_southbridge_init(void) { - int timers; - if (!is_geode()) return -ENODEV; init_lbars(); - timers = geode_mfgpt_detect(); - printk(KERN_INFO "geode: %d MFGPT timers available.\n", timers); + (void) mfgpt_timer_setup(); return 0; } diff --git a/arch/x86/kernel/mfgpt_32.c b/arch/x86/kernel/mfgpt_32.c index 5cf3a839530..abdb7c71199 100644 --- a/arch/x86/kernel/mfgpt_32.c +++ b/arch/x86/kernel/mfgpt_32.c @@ -74,28 +74,37 @@ __setup("mfgptfix", mfgpt_fix); * In other cases (such as with VSAless OpenFirmware), the system firmware * leaves timers available for us to use. */ -int __init geode_mfgpt_detect(void) + + +static int timers = -1; + +static void geode_mfgpt_detect(void) { - int count = 0, i; + int i; u16 val; + timers = 0; + if (disable) { - printk(KERN_INFO "geode-mfgpt: Skipping MFGPT setup\n"); - return 0; + printk(KERN_INFO "geode-mfgpt: MFGPT support is disabled\n"); + goto done; + } + + if (!geode_get_dev_base(GEODE_DEV_MFGPT)) { + printk(KERN_INFO "geode-mfgpt: MFGPT LBAR is not set up\n"); + goto done; } for (i = 0; i < MFGPT_MAX_TIMERS; i++) { val = geode_mfgpt_read(i, MFGPT_REG_SETUP); if (!(val & MFGPT_SETUP_SETUP)) { mfgpt_timers[i].avail = 1; - count++; + timers++; } } - /* set up clock event device, if desired */ - i = mfgpt_timer_setup(); - - return count; +done: + printk(KERN_INFO "geode-mfgpt: %d MFGPT timers available.\n", timers); } int geode_mfgpt_toggle_event(int timer, int cmp, int event, int enable) @@ -183,10 +192,16 @@ int geode_mfgpt_alloc_timer(int timer, int domain) { int i; - if (!geode_get_dev_base(GEODE_DEV_MFGPT)) - return -ENODEV; + if (timers == -1) { + /* timers haven't been detected yet */ + geode_mfgpt_detect(); + } + + if (!timers) + return -1; + if (timer >= MFGPT_MAX_TIMERS) - return -EIO; + return -1; if (timer < 0) { /* Try to find an available timer */ diff --git a/include/asm-x86/geode.h b/include/asm-x86/geode.h index c13630655d6..9e7280092a4 100644 --- a/include/asm-x86/geode.h +++ b/include/asm-x86/geode.h @@ -206,7 +206,6 @@ static inline u16 geode_mfgpt_read(int timer, u16 reg) return inw(base + reg + (timer * 8)); } -extern int __init geode_mfgpt_detect(void); extern int geode_mfgpt_toggle_event(int timer, int cmp, int event, int enable); extern int geode_mfgpt_set_irq(int timer, int cmp, int irq, int enable); extern int geode_mfgpt_alloc_timer(int timer, int domain); |