linux/drivers/clocksource/sun4i_timer.c, branch v3.12.10

clocksource: sun4i: Fix bug when switching from periodic to oneshot modes

2013-07-18T13:27:21Z

The interval was firing at was set up at probe time, and only changed in the set_next_event, and never changed back, which is not really what is expected. When enabling the periodic mode, now set an interval to tick every jiffy. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Cleanup parent clock setup

2013-07-18T13:27:20Z

The current bring-up code for the timer was overly complicated. The only thing we need is actually which clock we want to use as source and that's pretty much all. Let's keep it that way. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Remove TIMER_SCAL variable

2013-07-18T13:27:19Z

The prescaler is only used when using the internal low frequency oscillator (at 32kHz). Since we're using the higher frequency oscillator at 24MHz, we can just remove it. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Factor out some timer code

2013-07-18T13:27:18Z

The set_next_event and set_mode callbacks share a lot of common code we can easily factor to avoid duplication and mistakes. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Fix the next event code

2013-07-18T13:27:17Z

The next_event logic was setting the next interval to fire in the current timer value instead of the interval value register, which is obviously wrong. Plus, the logic to set the actual value was wrong as well: the interval register can only be modified when the timer is disabled, and then enable it back, otherwise, it'll have no effect. Fix this logic as well since that code couldn't possibly work. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Don't forget to enable the clock we use

2013-07-18T13:27:16Z

Even if in our case, this clock was non-gatable, used as a parent clock for several IPs, it still is a good idea to enable it. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Add clocksource and sched clock drivers

2013-07-18T13:27:15Z

Use the second timer found on the Allwinner SoCs as a clock source and sched clock, that were both not used yet on these platforms. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: rename AUTORELOAD define to RELOAD

2013-07-18T13:27:14Z

The name AUTORELOAD was actually pretty bad since it doesn't make the register reload the previous interval when it expires, but setting this value pushes the new programmed interval to the internal timer counter. Rename it to RELOAD instead. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Wrap macros arguments in parenthesis

2013-07-18T13:27:13Z

The macros were not using parenthesis to escape the arguments passed to them. It is pretty unsafe, so add those parenthesis. Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano

clocksource: sun4i: Use the BIT macros where possible

2013-07-18T13:27:12Z

Signed-off-by: Maxime Ripard Signed-off-by: Daniel Lezcano