On Tue, Mar 26, 2019 at 10:00:24PM +0100, Thomas Gleixner wrote:
> On Wed, 27 Feb 2019, Ricardo Neri wrote:
> > struct irq_data;
> > @@ -109,6 +114,11 @@ extern void
> > hpet_unregister_irq_handler(rtc_irq_handler handler);
> > static inline int hpet_enable(void) { return 0; }
> > static
On Wed, 27 Feb 2019, Ricardo Neri wrote:
> struct irq_data;
> @@ -109,6 +114,11 @@ extern void hpet_unregister_irq_handler(rtc_irq_handler
> handler);
> static inline int hpet_enable(void) { return 0; }
> static inline int is_hpet_enabled(void) { return 0; }
> #define hpet_readl(a) 0
>
Some of the registers in the HPET hardware have a width of 64 bits. 64-bit
access functions are needed mostly to read the counter and write the
comparator in a single read or write. Also, 64-bit accesses can be used to
to read parameters located in the higher bits of some registers (such as
the
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