Hey Ivan-
On Wed, Feb 05, 2014 at 03:47:38PM +0200, Ivan Khoronzhuk wrote:
> Add broadcast clock-event device for the Keystone arch.
>
> The timer can be configured as a general-purpose 64-bit timer,
> dual general-purpose 32-bit timers. When configured as dual 32-bit
> timers, each half can operate in conjunction (chain mode) or
> independently (unchained mode) of each other.
>
> Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> Acked-by: Santosh shilimkar <santosh.shilimkar@xxxxxx>
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxx>
> ---
> drivers/clocksource/Makefile | 1 +
> drivers/clocksource/timer-keystone.c | 233 +++++++++++++++++++++++++++++++++++
> 2 files changed, 234 insertions(+)
> create mode 100644 drivers/clocksource/timer-keystone.c
>
> diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
> index c7ca50a..4abe5aa 100644
> --- a/drivers/clocksource/Makefile
> +++ b/drivers/clocksource/Makefile
> @@ -37,3 +37,4 @@ obj-$(CONFIG_ARM_ARCH_TIMER) += arm_arch_timer.o
> obj-$(CONFIG_ARM_GLOBAL_TIMER) += arm_global_timer.o
> obj-$(CONFIG_CLKSRC_METAG_GENERIC) += metag_generic.o
> obj-$(CONFIG_ARCH_HAS_TICK_BROADCAST) += dummy_timer.o
> +obj-$(CONFIG_ARCH_KEYSTONE) += timer-keystone.o
> diff --git a/drivers/clocksource/timer-keystone.c b/drivers/clocksource/timer-keystone.c
> new file mode 100644
> index 0000000..2299666
> --- /dev/null
> +++ b/drivers/clocksource/timer-keystone.c
> +static void __init keystone_timer_init(struct device_node *np)
> +{
> + struct clock_event_device *event_dev = &timer.event_dev;
> + unsigned long rate;
> + struct clk *clk;
> + int irq, error;
> + u32 tgcr;
> +
> + irq = irq_of_parse_and_map(np, 0);
> + if (irq == NO_IRQ) {
> + pr_err("%s: failed to map interrupts\n", __func__);
> + return;
> + }
> +
> + timer.base = of_iomap(np, 0);
> + if (!timer.base) {
> + pr_err("%s: failed to map registers\n", __func__);
> + return;
> + }
> +
> + clk = of_clk_get(np, 0);
> + if (!clk) {
This condition should be IS_ERR(clk).
> + pr_err("%s: failed to get clock\n", __func__);
> + iounmap(timer.base);
> + return;
> + }
--
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