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    Subject[PATCH 2/3] clocksource/drivers/timer-of: Add boilerplate macros for timer module driver
    Date
    From: Chunyan Zhang <chunyan.zhang@unisoc.com>

    To support module build, platform driver structs, .probe(), match table and
    module macros need to be added to the timer driver. So this patch provides
    a few macros to take care of these things, and that would reduce the repeat
    code lines in every sigle driver.

    Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
    ---
    drivers/clocksource/timer-of.c | 13 +++++++++++++
    drivers/clocksource/timer-of.h | 20 ++++++++++++++++++++
    2 files changed, 33 insertions(+)

    diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
    index 7f108978fd51..ecd7f7379400 100644
    --- a/drivers/clocksource/timer-of.c
    +++ b/drivers/clocksource/timer-of.c
    @@ -8,7 +8,9 @@
    #include <linux/interrupt.h>
    #include <linux/of.h>
    #include <linux/of_address.h>
    +#include <linux/of_device.h>
    #include <linux/of_irq.h>
    +#include <linux/platform_device.h>
    #include <linux/slab.h>

    #include "timer-of.h"
    @@ -229,3 +231,14 @@ void timer_of_cleanup(struct timer_of *to)
    if (to->flags & TIMER_OF_BASE)
    timer_of_base_exit(&to->of_base);
    }
    +
    +int platform_timer_probe(struct platform_device *pdev)
    +{
    + int (*init_cb)(struct device_node *node);
    + struct device_node *np = pdev->dev.of_node;
    +
    + init_cb = of_device_get_match_data(&pdev->dev);
    +
    + return init_cb(np);
    +}
    +EXPORT_SYMBOL_GPL(platform_timer_probe);
    diff --git a/drivers/clocksource/timer-of.h b/drivers/clocksource/timer-of.h
    index 1b8cfac5900a..129f539d5f54 100644
    --- a/drivers/clocksource/timer-of.h
    +++ b/drivers/clocksource/timer-of.h
    @@ -3,6 +3,7 @@
    #define __TIMER_OF_H__

    #include <linux/clockchips.h>
    +#include <linux/platform_device.h>

    #define TIMER_OF_BASE 0x1
    #define TIMER_OF_CLOCK 0x2
    @@ -71,4 +72,23 @@ extern int timer_of_init(struct device_node *np,

    extern void timer_of_cleanup(struct timer_of *to);

    +extern int platform_timer_probe(struct platform_device *pdev);
    +
    +#define TIMER_PLATFORM_DRIVER_BEGIN(drv_name) \
    +static const struct of_device_id drv_name##_timer_match_table[] = {
    +
    +#define TIMER_MATCH(compat, _data) { .compatible = compat, .data = _data },
    +
    +#define TIMER_PLATFORM_DRIVER_END(drv_name) \
    + {}, \
    +}; \
    +MODULE_DEVICE_TABLE(of, drv_name##_timer_match_table); \
    +static struct platform_driver drv_name##_driver = { \
    + .probe = platform_timer_probe, \
    + .driver = { \
    + .name = #drv_name, \
    + .of_match_table = drv_name##_timer_match_table, \
    + }, \
    +}; \
    +module_platform_driver(drv_name##_driver)
    #endif
    --
    2.25.1
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