Messages in this thread | | | Subject | Re: [PATCH v2 1/6] firmware: xilinx: add register notifier in zynqmp firmware | From | Michal Simek <> | Date | Wed, 30 Jun 2021 13:56:56 +0200 |
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On 6/25/21 3:49 PM, Abhyuday Godhasara wrote: > In zynqmp-firmware, register notifier is not supported, add support of > register notifier in zynqmp-firmware. > > Signed-off-by: Tejas Patel <tejas.patel@xilinx.com> > Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com> > --- > Changes in v2: > - Removed updated copyright year from unchanged files. > --- > drivers/firmware/xilinx/zynqmp.c | 23 +++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 11 ++++++++++- > 2 files changed, 33 insertions(+), 1 deletion(-) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index 15b138326ecc..33f190e257b1 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -1036,6 +1036,29 @@ int zynqmp_pm_aes_engine(const u64 address, u32 *out) > } > EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine); > > +/** > + * zynqmp_pm_register_notifier() - PM API for register a subsystem > + * to be notified about specific > + * event/error. > + * @node: Node ID to which the event is related. > + * @event: Event Mask of Error events for which wants to get notified. > + * @wake: Wake subsystem upon capturing the event if value 1 > + * @enable: Enable the registration for value 1, disable for value 0 > + * > + * This function is used to register/un-register for particular node-event > + * combination in firmware. > + * > + * Return: Returns status, either success or error+reason > + */ > + > +int zynqmp_pm_register_notifier(const u32 node, const u32 event, > + const u32 wake, const u32 enable) > +{ > + return zynqmp_pm_invoke_fn(PM_REGISTER_NOTIFIER, node, event, > + wake, enable, NULL); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_register_notifier); > + > /** > * zynqmp_pm_system_shutdown - PM call to request a system shutdown or restart > * @type: Shutdown or restart? 0 for shutdown, 1 for restart > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index 9d1a5c175065..655783259415 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -2,7 +2,7 @@ > /* > * Xilinx Zynq MPSoC Firmware layer > * > - * Copyright (C) 2014-2019 Xilinx > + * Copyright (C) 2014-2021 Xilinx > * > * Michal Simek <michal.simek@xilinx.com> > * Davorin Mista <davorin.mista@aggios.com> > @@ -62,6 +62,7 @@ > > enum pm_api_id { > PM_GET_API_VERSION = 1, > + PM_REGISTER_NOTIFIER = 5, > PM_SYSTEM_SHUTDOWN = 12, > PM_REQUEST_NODE = 13, > PM_RELEASE_NODE = 14, > @@ -411,6 +412,8 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param, > u32 *value); > int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param, > u32 value); > +int zynqmp_pm_register_notifier(const u32 node, const u32 event, > + const u32 wake, const u32 enable); > #else > static inline int zynqmp_pm_get_api_version(u32 *version) > { > @@ -622,6 +625,12 @@ static inline int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param, > { > return -ENODEV; > } > + > +static inline int zynqmp_pm_register_notifier(const u32 node, const u32 event, > + const u32 wake, const u32 enable) > +{ > + return -ENODEV; > +} > #endif > > #endif /* __FIRMWARE_ZYNQMP_H__ */ >
Acked-by: Michal Simek <michal.simek@xilinx.com>
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