diff options
| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-03-13 11:54:37 +0100 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2015-03-16 17:03:07 +0100 |
| commit | 0afb46b248eff66e619ac00ac96d2e986844575e (patch) | |
| tree | e93f507f747fc20e51e9ef5d6c86f22c4c5dbb86 /drivers/clocksource | |
| parent | clocksource: atmel-st: use syscon/regmap (diff) | |
| download | linux-0afb46b248eff66e619ac00ac96d2e986844575e.tar.xz linux-0afb46b248eff66e619ac00ac96d2e986844575e.zip | |
clocksource: atmel-st: remove mach/hardware dependency
Remove the mach/hardware dependency to prepare the driver for multiplatform
support.
Also switch from setup_irq() to request_irq()
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/timer-atmel-st.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/clocksource/timer-atmel-st.c b/drivers/clocksource/timer-atmel-st.c index 674ef2519d6b..1692e17e096b 100644 --- a/drivers/clocksource/timer-atmel-st.c +++ b/drivers/clocksource/timer-atmel-st.c @@ -29,15 +29,12 @@ #include <linux/of_irq.h> #include <linux/regmap.h> -#include <asm/mach/time.h> - -#include <mach/hardware.h> - static unsigned long last_crtr; static u32 irqmask; static struct clock_event_device clkevt; static struct regmap *regmap_st; +#define AT91_SLOW_CLOCK 32768 #define RM9200_TIMER_LATCH ((AT91_SLOW_CLOCK + HZ/2) / HZ) /* @@ -96,13 +93,6 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id) return IRQ_NONE; } -static struct irqaction at91rm9200_timer_irq = { - .name = "at91_tick", - .flags = IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = at91rm9200_timer_interrupt, - .irq = NR_IRQS_LEGACY + AT91_ID_SYS, -}; - static cycle_t read_clk32k(struct clocksource *cs) { return read_CRTR(); @@ -193,6 +183,7 @@ static struct clock_event_device clkevt = { static void __init atmel_st_timer_init(struct device_node *node) { unsigned int val; + int irq, ret; regmap_st = syscon_node_to_regmap(node); if (IS_ERR(regmap_st)) @@ -204,12 +195,16 @@ static void __init atmel_st_timer_init(struct device_node *node) regmap_read(regmap_st, AT91_ST_SR, &val); /* Get the interrupts property */ - at91rm9200_timer_irq.irq = irq_of_parse_and_map(node, 0); - if (!at91rm9200_timer_irq.irq) + irq = irq_of_parse_and_map(node, 0); + if (!irq) panic(pr_fmt("Unable to get IRQ from DT\n")); /* Make IRQs happen for the system timer */ - setup_irq(at91rm9200_timer_irq.irq, &at91rm9200_timer_irq); + ret = request_irq(irq, at91rm9200_timer_interrupt, + IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL, + "at91_tick", regmap_st); + if (ret) + panic(pr_fmt("Unable to setup IRQ\n")); /* The 32KiHz "Slow Clock" (tick every 30517.58 nanoseconds) is used * directly for the clocksource and all clockevents, after adjusting |