lkml.org 
[lkml]   [2021]   [Jun]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2 1/6] firmware: xilinx: add register notifier in zynqmp firmware
From
Date


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>

M

\
 
 \ /
  Last update: 2021-06-30 13:58    [W:0.257 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site