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rtc: rockchip: support rtc suspend bypass

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If rtc 32k used as time for deep sleep, the rtc suspend
func bypass do nothing.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: I020182bd06ee68da387a141eb55a86f6bb3a0c5b
This commit is contained in:
Elaine Zhang
2024-01-29 15:39:18 +08:00
committed by Tao Huang
parent 517ffd6317
commit f45da24df9
1 changed files with 16 additions and 2 deletions
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18
drivers/rtc/rtc-rockchip.c
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@@ -86,6 +86,7 @@
#define RTC_VREF_INIT 0x40
#define CLK_32K_ENABLE BIT(5)
#define D2A_POR_REG_SEL1 BIT(4)
#define D2A_POR_REG_SEL0 BIT(1)
@@ -124,6 +125,7 @@ struct rockchip_rtc {
unsigned int flag;
unsigned int mode;
struct delayed_work trim_work;
bool suspend_bypass;
};
static unsigned int rockchip_rtc_write(struct regmap *map,
@@ -590,6 +592,9 @@ static int rockchip_rtc_suspend(struct device *dev)
struct platform_device *pdev = to_platform_device(dev);
struct rockchip_rtc *rtc = dev_get_drvdata(&pdev->dev);
if (rtc->suspend_bypass)
return 0;
if (device_may_wakeup(dev))
enable_irq_wake(rtc->irq);
@@ -619,6 +624,9 @@ static int rockchip_rtc_resume(struct device *dev)
struct rockchip_rtc *rtc = dev_get_drvdata(&pdev->dev);
int ret;
if (rtc->suspend_bypass)
return 0;
if (device_may_wakeup(dev))
disable_irq_wake(rtc->irq);
@@ -717,8 +725,10 @@ static int rockchip_rtc_probe(struct platform_device *pdev)
"Failed to add clk disable action.");
ret = rockchip_rtc_update_bits(rtc->regmap, RTC_VPTAT_TRIM,
D2A_POR_REG_SEL1,
D2A_POR_REG_SEL1);
D2A_POR_REG_SEL1 |
CLK_32K_ENABLE,
D2A_POR_REG_SEL1 |
CLK_32K_ENABLE);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"Failed to write RTC_VPTAT_TRIM\n");
@@ -788,6 +798,10 @@ static int rockchip_rtc_probe(struct platform_device *pdev)
"Failed to request alarm IRQ %d\n",
rtc->irq);
/* If rtc 32k used as time for deep sleep, the rtc suspend func bypass do nothing. */
rtc->suspend_bypass = device_property_read_bool(&pdev->dev,
"rockchip,rtc-suspend-bypass");
INIT_DELAYED_WORK(&rtc->trim_work, rockchip_rtc_compensation_delay_work);
rockchip_rtc_trim_start(rtc);