clocksource/drivers/timer-ti-dm: Use runtime PM directly and check errors
Use pm_runtime_resume_and_get() and check for a possible error returned. We want to do this as omap_dm_timer_enable() and omap_dm_timer_disable() are exposed to the pwm and remoteproc drivers, and in the following patch we turn struct omap_dm_timer into a cookie used by the exposed functions only. Signed-off-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Link: https://lore.kernel.org/r/20220815131250.34603-7-tony@atomide.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Родитель
1d513f439d
Коммит
bd351f1aee
|
@ -387,16 +387,24 @@ static int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source)
|
|||
|
||||
static void omap_dm_timer_enable(struct omap_dm_timer *timer)
|
||||
{
|
||||
pm_runtime_get_sync(&timer->pdev->dev);
|
||||
struct device *dev = &timer->pdev->dev;
|
||||
int rc;
|
||||
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
dev_err(dev, "could not enable timer\n");
|
||||
}
|
||||
|
||||
static void omap_dm_timer_disable(struct omap_dm_timer *timer)
|
||||
{
|
||||
pm_runtime_put_sync(&timer->pdev->dev);
|
||||
struct device *dev = &timer->pdev->dev;
|
||||
|
||||
pm_runtime_put_sync(dev);
|
||||
}
|
||||
|
||||
static int omap_dm_timer_prepare(struct omap_dm_timer *timer)
|
||||
{
|
||||
struct device *dev = &timer->pdev->dev;
|
||||
int rc;
|
||||
|
||||
/*
|
||||
|
@ -411,18 +419,20 @@ static int omap_dm_timer_prepare(struct omap_dm_timer *timer)
|
|||
}
|
||||
}
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
if (timer->capability & OMAP_TIMER_NEEDS_RESET) {
|
||||
rc = omap_dm_timer_reset(timer);
|
||||
if (rc) {
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
|
||||
__omap_dm_timer_enable_posted(timer);
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -628,12 +638,16 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask)
|
|||
|
||||
static int omap_dm_timer_start(struct omap_dm_timer *timer)
|
||||
{
|
||||
struct device *dev = &timer->pdev->dev;
|
||||
int rc;
|
||||
u32 l;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG);
|
||||
if (!(l & OMAP_TIMER_CTRL_ST)) {
|
||||
|
@ -646,6 +660,7 @@ static int omap_dm_timer_start(struct omap_dm_timer *timer)
|
|||
|
||||
static int omap_dm_timer_stop(struct omap_dm_timer *timer)
|
||||
{
|
||||
struct device *dev = &timer->pdev->dev;
|
||||
unsigned long rate = 0;
|
||||
|
||||
if (unlikely(!timer))
|
||||
|
@ -656,32 +671,47 @@ static int omap_dm_timer_stop(struct omap_dm_timer *timer)
|
|||
|
||||
__omap_dm_timer_stop(timer, rate);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int omap_dm_timer_set_load(struct omap_dm_timer *timer,
|
||||
unsigned int load)
|
||||
{
|
||||
struct device *dev;
|
||||
int rc;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
dmtimer_write(timer, OMAP_TIMER_LOAD_REG, load);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable,
|
||||
unsigned int match)
|
||||
{
|
||||
struct device *dev;
|
||||
int rc;
|
||||
u32 l;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG);
|
||||
if (enable)
|
||||
l |= OMAP_TIMER_CTRL_CE;
|
||||
|
@ -690,19 +720,26 @@ static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable,
|
|||
dmtimer_write(timer, OMAP_TIMER_MATCH_REG, match);
|
||||
dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on,
|
||||
int toggle, int trigger, int autoreload)
|
||||
{
|
||||
struct device *dev;
|
||||
int rc;
|
||||
u32 l;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG);
|
||||
l &= ~(OMAP_TIMER_CTRL_GPOCFG | OMAP_TIMER_CTRL_SCPWM |
|
||||
OMAP_TIMER_CTRL_PT | (0x03 << 10) | OMAP_TIMER_CTRL_AR);
|
||||
|
@ -715,20 +752,28 @@ static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on,
|
|||
l |= OMAP_TIMER_CTRL_AR;
|
||||
dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer)
|
||||
{
|
||||
struct device *dev;
|
||||
int rc;
|
||||
u32 l;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG);
|
||||
omap_dm_timer_disable(timer);
|
||||
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return l;
|
||||
}
|
||||
|
@ -736,12 +781,18 @@ static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer)
|
|||
static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer,
|
||||
int prescaler)
|
||||
{
|
||||
struct device *dev;
|
||||
int rc;
|
||||
u32 l;
|
||||
|
||||
if (unlikely(!timer) || prescaler < -1 || prescaler > 7)
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG);
|
||||
l &= ~(OMAP_TIMER_CTRL_PRE | (0x07 << 2));
|
||||
if (prescaler >= 0) {
|
||||
|
@ -750,20 +801,29 @@ static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer,
|
|||
}
|
||||
dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer,
|
||||
unsigned int value)
|
||||
{
|
||||
struct device *dev;
|
||||
int rc;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
__omap_dm_timer_int_enable(timer, value);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -776,12 +836,17 @@ static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer,
|
|||
*/
|
||||
static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask)
|
||||
{
|
||||
struct device *dev;
|
||||
u32 l = mask;
|
||||
int rc;
|
||||
|
||||
if (unlikely(!timer))
|
||||
return -EINVAL;
|
||||
|
||||
omap_dm_timer_enable(timer);
|
||||
dev = &timer->pdev->dev;
|
||||
rc = pm_runtime_resume_and_get(dev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
if (timer->revision == 1)
|
||||
l = dmtimer_read(timer, timer->irq_ena) & ~mask;
|
||||
|
@ -790,7 +855,8 @@ static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask)
|
|||
l = dmtimer_read(timer, OMAP_TIMER_WAKEUP_EN_REG) & ~mask;
|
||||
dmtimer_write(timer, OMAP_TIMER_WAKEUP_EN_REG, l);
|
||||
|
||||
omap_dm_timer_disable(timer);
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -943,11 +1009,11 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
|
|||
pm_runtime_enable(dev);
|
||||
|
||||
if (!timer->reserved) {
|
||||
ret = pm_runtime_get_sync(dev);
|
||||
if (ret < 0) {
|
||||
ret = pm_runtime_resume_and_get(dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "%s: pm_runtime_get_sync failed!\n",
|
||||
__func__);
|
||||
goto err_get_sync;
|
||||
goto err_disable;
|
||||
}
|
||||
__omap_dm_timer_init_regs(timer);
|
||||
pm_runtime_put(dev);
|
||||
|
@ -962,8 +1028,7 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
|
|||
|
||||
return 0;
|
||||
|
||||
err_get_sync:
|
||||
pm_runtime_put_noidle(dev);
|
||||
err_disable:
|
||||
pm_runtime_disable(dev);
|
||||
return ret;
|
||||
}
|
||||
|
|
Загрузка…
Ссылка в новой задаче