Re: [PATCH 1/2] clocksource: timer-dm: Make unexported functions static

From: Keerthy
Date: Tue Dec 19 2017 - 03:36:32 EST

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In reply to: Ladislav Michl: "[PATCH 1/2] clocksource: timer-dm: Make unexported functions static"
Next in thread: Ladislav Michl: "[PATCH 2/2] clocksource: timer-dm: Check prescaler value"
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On Monday 18 December 2017 05:00 PM, Ladislav Michl wrote:
> As dmtimer no longer exports functions, there is no point
> to have them non-static. Also delete those not used anywhere.

I will refrain from this patch at the moment. I have plans of another
series to do some more cleanups. For now want to keep the changes minimal.

Some of the functions that you are removing in this patch might be
needed and can be added for ops in future.
So i will let this be separate patch.

Thanks,
Keerthy

>
> Signed-off-by: Ladislav Michl <ladis@xxxxxxxxxxxxxx>
> ---
> drivers/clocksource/timer-dm.c | 125 ++++++++---------------------------------
> include/clocksource/dmtimer.h | 26 ---------
> 2 files changed, 23 insertions(+), 128 deletions(-)
>
> diff --git a/drivers/clocksource/timer-dm.c b/drivers/clocksource/timer-dm.c
> index 392978ccd8a6..ec3a28c90c70 100644
> --- a/drivers/clocksource/timer-dm.c
> +++ b/drivers/clocksource/timer-dm.c
> @@ -204,16 +204,6 @@ static inline u32 omap_dm_timer_reserved_systimer(int id)
> return (omap_reserved_systimers & (1 << (id - 1))) ? 1 : 0;
> }
>
> -int omap_dm_timer_reserve_systimer(int id)
> -{
> - if (omap_dm_timer_reserved_systimer(id))
> - return -ENODEV;
> -
> - omap_reserved_systimers |= (1 << (id - 1));
> -
> - return 0;
> -}
> -
> static struct omap_dm_timer *_omap_dm_timer_request(int req_type, void *data)
> {
> struct omap_dm_timer *timer = NULL, *t;
> @@ -298,16 +288,16 @@ static struct omap_dm_timer *_omap_dm_timer_request(int req_type, void *data)
> return timer;
> }
>
> -struct omap_dm_timer *omap_dm_timer_request(void)
> +static struct omap_dm_timer *omap_dm_timer_request(void)
> {
> return _omap_dm_timer_request(REQUEST_ANY, NULL);
> }
>
> -struct omap_dm_timer *omap_dm_timer_request_specific(int id)
> +static struct omap_dm_timer *omap_dm_timer_request_specific(int id)
> {
> /* Requesting timer by ID is not supported when device tree is used */
> if (of_have_populated_dt()) {
> - pr_warn("%s: Please use omap_dm_timer_request_by_cap/node()\n",
> + pr_warn("%s: Please use omap_dm_timer_request_by_node()\n",
> __func__);
> return NULL;
> }
> @@ -315,20 +305,6 @@ struct omap_dm_timer *omap_dm_timer_request_specific(int id)
> return _omap_dm_timer_request(REQUEST_BY_ID, &id);
> }
>
> -/**
> - * omap_dm_timer_request_by_cap - Request a timer by capability
> - * @cap: Bit mask of capabilities to match
> - *
> - * Find a timer based upon capabilities bit mask. Callers of this function
> - * should use the definitions found in the plat/dmtimer.h file under the
> - * comment "timer capabilities used in hwmod database". Returns pointer to
> - * timer handle on success and a NULL pointer on failure.
> - */
> -struct omap_dm_timer *omap_dm_timer_request_by_cap(u32 cap)
> -{
> - return _omap_dm_timer_request(REQUEST_BY_CAP, &cap);
> -}
> -
> /**
> * omap_dm_timer_request_by_node - Request a timer by device-tree node
> * @np: Pointer to device-tree timer node
> @@ -336,7 +312,7 @@ struct omap_dm_timer *omap_dm_timer_request_by_cap(u32 cap)
> * Request a timer based upon a device node pointer. Returns pointer to
> * timer handle on success and a NULL pointer on failure.
> */
> -struct omap_dm_timer *omap_dm_timer_request_by_node(struct device_node *np)
> +static struct omap_dm_timer *omap_dm_timer_request_by_node(struct device_node *np)
> {
> if (!np)
> return NULL;
> @@ -344,7 +320,7 @@ struct omap_dm_timer *omap_dm_timer_request_by_node(struct device_node *np)
> return _omap_dm_timer_request(REQUEST_BY_NODE, np);
> }
>
> -int omap_dm_timer_free(struct omap_dm_timer *timer)
> +static int omap_dm_timer_free(struct omap_dm_timer *timer)
> {
> if (unlikely(!timer))
> return -EINVAL;
> @@ -424,7 +400,7 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask)
>
> #else
>
> -struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer)
> +static struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer)
> {
> if (timer && !IS_ERR(timer->fclk))
> return timer->fclk;
> @@ -440,18 +416,7 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask)
>
> #endif
>
> -int omap_dm_timer_trigger(struct omap_dm_timer *timer)
> -{
> - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) {
> - pr_err("%s: timer not available or enabled.\n", __func__);
> - return -EINVAL;
> - }
> -
> - omap_dm_timer_write_reg(timer, OMAP_TIMER_TRIGGER_REG, 0);
> - return 0;
> -}
> -
> -int omap_dm_timer_start(struct omap_dm_timer *timer)
> +static int omap_dm_timer_start(struct omap_dm_timer *timer)
> {
> u32 l;
>
> @@ -471,7 +436,7 @@ int omap_dm_timer_start(struct omap_dm_timer *timer)
> return 0;
> }
>
> -int omap_dm_timer_stop(struct omap_dm_timer *timer)
> +static int omap_dm_timer_stop(struct omap_dm_timer *timer)
> {
> unsigned long rate = 0;
>
> @@ -556,8 +521,8 @@ int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
> return ret;
> }
>
> -int omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload,
> - unsigned int load)
> +static int omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload,
> + unsigned int load)
> {
> u32 l;
>
> @@ -581,37 +546,8 @@ int omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload,
> return 0;
> }
>
> -/* Optimized set_load which removes costly spin wait in timer_start */
> -int omap_dm_timer_set_load_start(struct omap_dm_timer *timer, int autoreload,
> - unsigned int load)
> -{
> - u32 l;
> -
> - if (unlikely(!timer))
> - return -EINVAL;
> -
> - omap_dm_timer_enable(timer);
> -
> - l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG);
> - if (autoreload) {
> - l |= OMAP_TIMER_CTRL_AR;
> - omap_dm_timer_write_reg(timer, OMAP_TIMER_LOAD_REG, load);
> - } else {
> - l &= ~OMAP_TIMER_CTRL_AR;
> - }
> - l |= OMAP_TIMER_CTRL_ST;
> -
> - __omap_dm_timer_load_start(timer, l, load, timer->posted);
> -
> - /* Save the context */
> - timer->context.tclr = l;
> - timer->context.tldr = load;
> - timer->context.tcrr = load;
> - return 0;
> -}
> -
> -int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable,
> - unsigned int match)
> +static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable,
> + unsigned int match)
> {
> u32 l;
>
> @@ -634,8 +570,8 @@ int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable,
> return 0;
> }
>
> -int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on,
> - int toggle, int trigger)
> +static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on,
> + int toggle, int trigger)
> {
> u32 l;
>
> @@ -659,7 +595,8 @@ int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on,
> return 0;
> }
>
> -int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler)
> +static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer,
> + int prescaler)
> {
> u32 l;
>
> @@ -681,8 +618,8 @@ int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler)
> return 0;
> }
>
> -int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer,
> - unsigned int value)
> +static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer,
> + unsigned int value)
> {
> if (unlikely(!timer))
> return -EINVAL;
> @@ -704,7 +641,7 @@ int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer,
> *
> * Disables the specified timer interrupts for a timer.
> */
> -int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask)
> +static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask)
> {
> u32 l = mask;
>
> @@ -727,7 +664,7 @@ int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask)
> return 0;
> }
>
> -unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer)
> +static unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer)
> {
> unsigned int l;
>
> @@ -741,7 +678,7 @@ unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer)
> return l;
> }
>
> -int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value)
> +static int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value)
> {
> if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev)))
> return -EINVAL;
> @@ -751,7 +688,7 @@ int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value)
> return 0;
> }
>
> -unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer)
> +static unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer)
> {
> if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) {
> pr_err("%s: timer not iavailable or enabled.\n", __func__);
> @@ -761,7 +698,7 @@ unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer)
> return __omap_dm_timer_read_counter(timer, timer->posted);
> }
>
> -int omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value)
> +static int omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value)
> {
> if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) {
> pr_err("%s: timer not available or enabled.\n", __func__);
> @@ -775,22 +712,6 @@ int omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value)
> return 0;
> }
>
> -int omap_dm_timers_active(void)
> -{
> - struct omap_dm_timer *timer;
> -
> - list_for_each_entry(timer, &omap_timer_list, node) {
> - if (!timer->reserved)
> - continue;
> -
> - if (omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG) &
> - OMAP_TIMER_CTRL_ST) {
> - return 1;
> - }
> - }
> - return 0;
> -}
> -
> static const struct of_device_id omap_timer_match[];
>
> /**
> diff --git a/include/clocksource/dmtimer.h b/include/clocksource/dmtimer.h
> index 862ad62dab9d..63d6ec0747d9 100644
> --- a/include/clocksource/dmtimer.h
> +++ b/include/clocksource/dmtimer.h
> @@ -124,40 +124,14 @@ struct omap_dm_timer {
> struct list_head node;
> };
>
> -int omap_dm_timer_reserve_systimer(int id);
> -struct omap_dm_timer *omap_dm_timer_request(void);
> -struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id);
> -struct omap_dm_timer *omap_dm_timer_request_by_cap(u32 cap);
> -struct omap_dm_timer *omap_dm_timer_request_by_node(struct device_node *np);
> -int omap_dm_timer_free(struct omap_dm_timer *timer);
> void omap_dm_timer_enable(struct omap_dm_timer *timer);
> void omap_dm_timer_disable(struct omap_dm_timer *timer);
>
> int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
>
> u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
> -struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer);
> -
> -int omap_dm_timer_trigger(struct omap_dm_timer *timer);
> -int omap_dm_timer_start(struct omap_dm_timer *timer);
> -int omap_dm_timer_stop(struct omap_dm_timer *timer);
>
> int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
> -int omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, unsigned int value);
> -int omap_dm_timer_set_load_start(struct omap_dm_timer *timer, int autoreload, unsigned int value);
> -int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match);
> -int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, int trigger);
> -int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler);
> -
> -int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value);
> -int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask);
> -
> -unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer);
> -int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value);
> -unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer);
> -int omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value);
> -
> -int omap_dm_timers_active(void);
>
> /*
> * Do not use the defines below, they are not needed. They should be only
>

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In reply to: Ladislav Michl: "[PATCH 1/2] clocksource: timer-dm: Make unexported functions static"
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