diff options
| -rw-r--r-- | drivers/clocksource/samsung_pwm_timer.c | 33 |
1 files changed, 8 insertions, 25 deletions
diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c index 5d0049f07af4..0c005f4fa296 100644 --- a/drivers/clocksource/samsung_pwm_timer.c +++ b/drivers/clocksource/samsung_pwm_timer.c @@ -65,6 +65,7 @@ EXPORT_SYMBOL(samsung_pwm_lock); struct samsung_pwm_clocksource { void __iomem *base; + void __iomem *source_reg; unsigned int irq[SAMSUNG_PWM_NUM]; struct samsung_pwm_variant variant; @@ -297,23 +298,6 @@ static void __init samsung_clockevent_init(void) } } -static void __iomem *samsung_timer_reg(void) -{ - switch (pwm.source_id) { - case 0: - case 1: - case 2: - case 3: - return pwm.base + pwm.source_id * 0x0c + 0x14; - - case 4: - return pwm.base + 0x40; - - default: - BUG(); - } -} - /* * Override the global weak sched_clock symbol with this * local implementation which uses the clocksource to get some @@ -323,17 +307,11 @@ static void __iomem *samsung_timer_reg(void) */ static u32 notrace samsung_read_sched_clock(void) { - void __iomem *reg = samsung_timer_reg(); - - if (!reg) - return 0; - - return ~__raw_readl(reg); + return ~__raw_readl(pwm.source_reg); } static void __init samsung_clocksource_init(void) { - void __iomem *reg = samsung_timer_reg(); unsigned long pclk; unsigned long clock_rate; int ret; @@ -348,10 +326,15 @@ static void __init samsung_clocksource_init(void) samsung_time_setup(pwm.source_id, pwm.tcnt_max); samsung_time_start(pwm.source_id, true); + if (pwm.source_id == 4) + pwm.source_reg = pwm.base + 0x40; + else + pwm.source_reg = pwm.base + pwm.source_id * 0x0c + 0x14; + setup_sched_clock(samsung_read_sched_clock, pwm.variant.bits, clock_rate); - ret = clocksource_mmio_init(reg, "samsung_clocksource_timer", + ret = clocksource_mmio_init(pwm.source_reg, "samsung_clocksource_timer", clock_rate, 250, pwm.variant.bits, clocksource_mmio_readl_down); if (ret) |