On 06/24/13 08:53, Srinivas KANDAGATLA wrote:
> +#include <linux/clkdev.h>
Why do you need this include?
> +#include <asm/mach/irq.h>
And this one?
> +static u64 gt_counter_read(void)
> +{
> + u64 counter;
> + u32 lower;
> + u32 upper, old_upper;
> +
> + upper = readl_relaxed(gt_base + GT_COUNTER1);
> + do {
> + old_upper = upper;
> + lower = readl_relaxed(gt_base + GT_COUNTER0);
> + upper = readl_relaxed(gt_base + GT_COUNTER1);
[snip]
> +static void gt_compare_set(unsigned long delta, int periodic)
> +{
> + u64 counter = gt_counter_read();
> + unsigned long ctrl = readl(gt_base + GT_CONTROL);
> +
> + counter += delta;
> + ctrl &= ~(GT_CONTROL_COMP_ENABLE | GT_CONTROL_IRQ_ENABLE);
> +
> + writel(ctrl, gt_base + GT_CONTROL);
> + writel(lower_32_bits(counter), gt_base + GT_COMP0);
> + writel(upper_32_bits(counter), gt_base + GT_COMP1);
> +
> + if (periodic) {
> + writel(delta, gt_base + GT_AUTO_INC);
> + ctrl |= GT_CONTROL_AUTO_INC;
> + }
> +
> + ctrl |= GT_CONTROL_COMP_ENABLE | GT_CONTROL_IRQ_ENABLE;
> + writel(ctrl, gt_base + GT_CONTROL);
> +}
Why is there a mix of the relaxed and non-relaxed io accessors?
> +#ifdef CONFIG_CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
> +static u32 gt_sched_clock_read(void)
notrace
> +{
> + if (!gt_base)
> + return 0;
Seems impossible? Remove this check?
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