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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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dc11bae785
The different drivers are all using the same pattern when initializing. 1. Get the base address 2. Get the irq number 3. Get the clock 4. Prepare and enable the clock 5. Get the rate 6. Request an interrupt Instead of repeating again and again these steps in all the drivers, let's provide a common init routine to give the opportunity to factor all of them out. We can expect a significant kernel size improvement when the common routine will be used in all the drivers. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
#ifndef __TIMER_OF_H__
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#define __TIMER_OF_H__
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#include <linux/clockchips.h>
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#define TIMER_OF_BASE 0x1
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#define TIMER_OF_CLOCK 0x2
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#define TIMER_OF_IRQ 0x4
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struct of_timer_irq {
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int irq;
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int index;
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int percpu;
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const char *name;
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unsigned long flags;
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irq_handler_t handler;
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};
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struct of_timer_base {
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void __iomem *base;
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const char *name;
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int index;
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};
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struct of_timer_clk {
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struct clk *clk;
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const char *name;
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int index;
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unsigned long rate;
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unsigned long period;
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};
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struct timer_of {
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unsigned int flags;
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struct clock_event_device clkevt;
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struct of_timer_base of_base;
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struct of_timer_irq of_irq;
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struct of_timer_clk of_clk;
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void *private_data;
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};
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static inline struct timer_of *to_timer_of(struct clock_event_device *clkevt)
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{
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return container_of(clkevt, struct timer_of, clkevt);
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}
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static inline void __iomem *timer_of_base(struct timer_of *to)
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{
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return to->of_base.base;
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}
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static inline int timer_of_irq(struct timer_of *to)
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{
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return to->of_irq.irq;
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}
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static inline unsigned long timer_of_rate(struct timer_of *to)
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{
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return to->of_clk.rate;
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}
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static inline unsigned long timer_of_period(struct timer_of *to)
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{
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return to->of_clk.period;
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}
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extern int __init timer_of_init(struct device_node *np,
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struct timer_of *to);
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#endif
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