diff options
| author | Joonyoung Shim <jy0922.shim@samsung.com> | 2015-08-12 19:21:46 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-29 19:26:11 +0200 |
| commit | 68912df901b9807a708cd1599b30fa56548d15e1 (patch) | |
| tree | 20bec77ce0b52e255634f7b7047729c9756ad768 | |
| parent | 85d1ba73e42e8317b21ba71ab277fb762a45e6b0 (diff) | |
rtc: s3c: fix disabled clocks for alarm
commit 1fb1c35f56bb6ab4a65920c648154b0f78f634a5 upstream.
The clock enable/disable codes for alarm have been removed from
commit 24e1455493da ("drivers/rtc/rtc-s3c.c: delete duplicate clock
control") and the clocks are disabled even if alarm is set, so alarm
interrupt can't happen.
The s3c_rtc_setaie function can be called several times with 'enabled'
argument having same value, so it needs to check whether clocks are
enabled or not.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index 76cbad7a99d3..c5a2523b0185 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -39,6 +39,7 @@ struct s3c_rtc { void __iomem *base; struct clk *rtc_clk; struct clk *rtc_src_clk; + bool clk_disabled; struct s3c_rtc_data *data; @@ -71,9 +72,12 @@ static void s3c_rtc_enable_clk(struct s3c_rtc *info) unsigned long irq_flags; spin_lock_irqsave(&info->alarm_clk_lock, irq_flags); - clk_enable(info->rtc_clk); - if (info->data->needs_src_clk) - clk_enable(info->rtc_src_clk); + if (info->clk_disabled) { + clk_enable(info->rtc_clk); + if (info->data->needs_src_clk) + clk_enable(info->rtc_src_clk); + info->clk_disabled = false; + } spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags); } @@ -82,9 +86,12 @@ static void s3c_rtc_disable_clk(struct s3c_rtc *info) unsigned long irq_flags; spin_lock_irqsave(&info->alarm_clk_lock, irq_flags); - if (info->data->needs_src_clk) - clk_disable(info->rtc_src_clk); - clk_disable(info->rtc_clk); + if (!info->clk_disabled) { + if (info->data->needs_src_clk) + clk_disable(info->rtc_src_clk); + clk_disable(info->rtc_clk); + info->clk_disabled = true; + } spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags); } @@ -128,6 +135,11 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled) s3c_rtc_disable_clk(info); + if (enabled) + s3c_rtc_enable_clk(info); + else + s3c_rtc_disable_clk(info); + return 0; } |