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Merge branch 'clockevents/4.8' of http://git.linaro.org/people/daniel.lezcano/linux into timers/core

Browse source 
Pull the clockevents/clocksource tree from Daniel Lezcano:

  - Convert the clocksource-probe init functions to return a value in order to
    prepare the consolidation of the drivers using the DT. It is a big patchset
    but went through 01.org (kbuild bot), linux next and kernel-ci (continuous
    integration) (Daniel Lezcano)

  - Fix a bad error handling by returning the right value for cadence_ttc
    (Christophe Jaillet)

  - Fix typo in the Kconfig for the Samsung pwm (Alexandre Belloni)

  - Change functions to static for armada-370-xp and digicolor (Ben Dooks)

  - Add support for the rk3399 SoC timer by adding bindings and a slight
    change in the base address. Take the opportunity to add the DYNIRQ flag
    (Huang Tao)

  - Fix endian accessors for the Samsung pwm timer (Matthew Leach)

  - Add Oxford Semiconductor RPS Dual Timer driver (Neil Armstrong)

  - Add a kernel parameter to swich on/off the event stream feature of the arch
    arm timer (Will Deacon)
This commit is contained in:
Thomas Gleixner 2016-07-07 15:41:13 +02:00
commit 3d93f42d44
79 changed files with 1628 additions and 621 deletions
Download patch file Download diff file Expand all files Collapse all files

49
arch/microblaze/kernel/timer.c
View file

@ -170,7 +170,7 @@ static struct irqaction timer_irqaction = {
.dev_id = &clockevent_xilinx_timer,
};
static __init void xilinx_clockevent_init(void)
static __init int xilinx_clockevent_init(void)
{
clockevent_xilinx_timer.mult =
div_sc(timer_clock_freq, NSEC_PER_SEC,
@ -181,6 +181,8 @@ static __init void xilinx_clockevent_init(void)
clockevent_delta2ns(1, &clockevent_xilinx_timer);
clockevent_xilinx_timer.cpumask = cpumask_of(0);
clockevents_register_device(&clockevent_xilinx_timer);
return 0;
}
static u64 xilinx_clock_read(void)
@ -229,8 +231,14 @@ static struct clocksource clocksource_microblaze = {
static int __init xilinx_clocksource_init(void)
{
if (clocksource_register_hz(&clocksource_microblaze, timer_clock_freq))
panic("failed to register clocksource");
int ret;
ret = clocksource_register_hz(&clocksource_microblaze,
timer_clock_freq);
if (ret) {
pr_err("failed to register clocksource");
return ret;
}
/* stop timer1 */
write_fn(read_fn(timer_baseaddr + TCSR1) & ~TCSR_ENT,
@ -239,16 +247,16 @@ static int __init xilinx_clocksource_init(void)
write_fn(TCSR_TINT|TCSR_ENT|TCSR_ARHT, timer_baseaddr + TCSR1);
/* register timecounter - for ftrace support */
init_xilinx_timecounter();
return 0;
return init_xilinx_timecounter();
}
static void __init xilinx_timer_init(struct device_node *timer)
static int __init xilinx_timer_init(struct device_node *timer)
{
struct clk *clk;
static int initialized;
u32 irq;
u32 timer_num = 1;
int ret;
if (initialized)
return;
@ -258,7 +266,7 @@ static void __init xilinx_timer_init(struct device_node *timer)
timer_baseaddr = of_iomap(timer, 0);
if (!timer_baseaddr) {
pr_err("ERROR: invalid timer base address\n");
BUG();
return -ENXIO;
}
write_fn = timer_write32;
@ -271,11 +279,15 @@ static void __init xilinx_timer_init(struct device_node *timer)
}
irq = irq_of_parse_and_map(timer, 0);
if (irq <= 0) {
pr_err("Failed to parse and map irq");
return -EINVAL;
}
of_property_read_u32(timer, "xlnx,one-timer-only", &timer_num);
if (timer_num) {
pr_emerg("Please enable two timers in HW\n");
BUG();
pr_err("Please enable two timers in HW\n");
return -EINVAL;
}
pr_info("%s: irq=%d\n", timer->full_name, irq);
@ -297,14 +309,27 @@ static void __init xilinx_timer_init(struct device_node *timer)
freq_div_hz = timer_clock_freq / HZ;
setup_irq(irq, &timer_irqaction);
ret = setup_irq(irq, &timer_irqaction);
if (ret) {
pr_err("Failed to setup IRQ");
return ret;
}
#ifdef CONFIG_HEART_BEAT
microblaze_setup_heartbeat();
#endif
xilinx_clocksource_init();
xilinx_clockevent_init();
ret = xilinx_clocksource_init();
if (ret)
return ret;
ret = xilinx_clockevent_init();
if (ret)
return ret;
sched_clock_register(xilinx_clock_read, 32, timer_clock_freq);
return 0;
}
CLOCKSOURCE_OF_DECLARE(xilinx_timer, "xlnx,xps-timer-1.00.a",