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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-17 10:03:50 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-17 10:03:50 -0700 |
commit | edafb6fe42cfa98f4abf8c63acc5f4db011ed7b9 (patch) | |
tree | 2865672fc0ece89d303e70ff5e5f17a99452a4f1 /drivers/rtc/rtc-imx-sc.c | |
parent | Merge tag 'dmaengine-5.3-rc1' of git://git.infradead.org/users/vkoul/slave-dma (diff) | |
parent | rtc: wm831x: Add IRQF_ONESHOT flag (diff) | |
download | linux-dev-edafb6fe42cfa98f4abf8c63acc5f4db011ed7b9.tar.xz linux-dev-edafb6fe42cfa98f4abf8c63acc5f4db011ed7b9.zip |
Merge tag 'rtc-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"A quiet cycle this time.
- ds1307: properly handle oscillator failure flags
- imx-sc: alarm support
- pcf2123: alarm support, correct offset handling
- sun6i: add R40 support
- simplify getting the adapter of an i2c client"
* tag 'rtc-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (37 commits)
rtc: wm831x: Add IRQF_ONESHOT flag
rtc: stm32: remove one condition check in stm32_rtc_set_alarm()
rtc: pcf2123: Fix build error
rtc: interface: Change type of 'count' from int to u64
rtc: pcf8563: Clear event flags and disable interrupts before requesting irq
rtc: pcf8563: Fix interrupt trigger method
rtc: pcf2123: fix negative offset rounding
rtc: pcf2123: add alarm support
rtc: pcf2123: use %ptR
rtc: pcf2123: port to regmap
rtc: pcf2123: remove sysfs register view
rtc: rx8025: simplify getting the adapter of a client
rtc: rx8010: simplify getting the adapter of a client
rtc: rv8803: simplify getting the adapter of a client
rtc: m41t80: simplify getting the adapter of a client
rtc: fm3130: simplify getting the adapter of a client
rtc: tegra: Drop MODULE_ALIAS
rtc: sun6i: Add R40 compatible
dt-bindings: rtc: sun6i: Add the R40 RTC compatible
dt-bindings: rtc: Convert Allwinner A31 RTC to a schema
...
Diffstat (limited to 'drivers/rtc/rtc-imx-sc.c')
-rw-r--r-- | drivers/rtc/rtc-imx-sc.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-imx-sc.c b/drivers/rtc/rtc-imx-sc.c index 19642bfd913a..c933045fe04b 100644 --- a/drivers/rtc/rtc-imx-sc.c +++ b/drivers/rtc/rtc-imx-sc.c @@ -3,6 +3,7 @@ * Copyright 2018 NXP. */ +#include <dt-bindings/firmware/imx/rsrc.h> #include <linux/arm-smccc.h> #include <linux/firmware/imx/sci.h> #include <linux/module.h> @@ -11,11 +12,15 @@ #include <linux/rtc.h> #define IMX_SC_TIMER_FUNC_GET_RTC_SEC1970 9 +#define IMX_SC_TIMER_FUNC_SET_RTC_ALARM 8 #define IMX_SC_TIMER_FUNC_SET_RTC_TIME 6 #define IMX_SIP_SRTC 0xC2000002 #define IMX_SIP_SRTC_SET_TIME 0x0 +#define SC_IRQ_GROUP_RTC 2 +#define SC_IRQ_RTC 1 + static struct imx_sc_ipc *rtc_ipc_handle; static struct rtc_device *imx_sc_rtc; @@ -24,6 +29,16 @@ struct imx_sc_msg_timer_get_rtc_time { u32 time; } __packed; +struct imx_sc_msg_timer_rtc_set_alarm { + struct imx_sc_rpc_msg hdr; + u16 year; + u8 mon; + u8 day; + u8 hour; + u8 min; + u8 sec; +} __packed; + static int imx_sc_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct imx_sc_msg_timer_get_rtc_time msg; @@ -60,9 +75,77 @@ static int imx_sc_rtc_set_time(struct device *dev, struct rtc_time *tm) return res.a0; } +static int imx_sc_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) +{ + return imx_scu_irq_group_enable(SC_IRQ_GROUP_RTC, SC_IRQ_RTC, enable); +} + +static int imx_sc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + /* + * SCU firmware does NOT provide read alarm API, but .read_alarm + * callback is required by RTC framework to support alarm function, + * so just return here. + */ + return 0; +} + +static int imx_sc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct imx_sc_msg_timer_rtc_set_alarm msg; + struct imx_sc_rpc_msg *hdr = &msg.hdr; + int ret; + struct rtc_time *alrm_tm = &alrm->time; + + hdr->ver = IMX_SC_RPC_VERSION; + hdr->svc = IMX_SC_RPC_SVC_TIMER; + hdr->func = IMX_SC_TIMER_FUNC_SET_RTC_ALARM; + hdr->size = 3; + + msg.year = alrm_tm->tm_year + 1900; + msg.mon = alrm_tm->tm_mon + 1; + msg.day = alrm_tm->tm_mday; + msg.hour = alrm_tm->tm_hour; + msg.min = alrm_tm->tm_min; + msg.sec = alrm_tm->tm_sec; + + ret = imx_scu_call_rpc(rtc_ipc_handle, &msg, true); + if (ret) { + dev_err(dev, "set rtc alarm failed, ret %d\n", ret); + return ret; + } + + ret = imx_sc_rtc_alarm_irq_enable(dev, alrm->enabled); + if (ret) { + dev_err(dev, "enable rtc alarm failed, ret %d\n", ret); + return ret; + } + + return 0; +} + static const struct rtc_class_ops imx_sc_rtc_ops = { .read_time = imx_sc_rtc_read_time, .set_time = imx_sc_rtc_set_time, + .read_alarm = imx_sc_rtc_read_alarm, + .set_alarm = imx_sc_rtc_set_alarm, + .alarm_irq_enable = imx_sc_rtc_alarm_irq_enable, +}; + +static int imx_sc_rtc_alarm_notify(struct notifier_block *nb, + unsigned long event, void *group) +{ + /* ignore non-rtc irq */ + if (!((event & SC_IRQ_RTC) && (*(u8 *)group == SC_IRQ_GROUP_RTC))) + return 0; + + rtc_update_irq(imx_sc_rtc, 1, RTC_IRQF | RTC_AF); + + return 0; +} + +static struct notifier_block imx_sc_rtc_alarm_sc_notifier = { + .notifier_call = imx_sc_rtc_alarm_notify, }; static int imx_sc_rtc_probe(struct platform_device *pdev) @@ -73,6 +156,8 @@ static int imx_sc_rtc_probe(struct platform_device *pdev) if (ret) return ret; + device_init_wakeup(&pdev->dev, true); + imx_sc_rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(imx_sc_rtc)) return PTR_ERR(imx_sc_rtc); @@ -87,6 +172,8 @@ static int imx_sc_rtc_probe(struct platform_device *pdev) return ret; } + imx_scu_irq_register_notifier(&imx_sc_rtc_alarm_sc_notifier); + return 0; } |