Commit 1881eadb authored by Abhyuday Godhasara's avatar Abhyuday Godhasara Committed by Greg Kroah-Hartman
Browse files

firmware: xilinx: add register notifier in zynqmp firmware 



In zynqmp-firmware, register notifier is not supported, add support of
register notifier in zynqmp-firmware.

Acked-by: default avatarMichal Simek <michal.simek@xilinx.com>
Signed-off-by: default avatarTejas Patel <tejas.patel@xilinx.com>
Signed-off-by: default avatarAbhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Link: https://lore.kernel.org/r/20211026042525.26612-2-abhyuday.godhasara@xilinx.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fbf3443f

drivers/firmware/xilinx/zynqmp.c

+23 −0
Original line number Diff line number Diff line
@@ -1116,6 +1116,29 @@ 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

include/linux/firmware/xlnx-zynqmp.h

+10 −1
Original line number Diff line number Diff line
@@ -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>
@@ -66,6 +66,7 @@ 


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,
@@ -427,6 +428,8 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param, 
int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,

				 u32 value);

int zynqmp_pm_load_pdi(const u32 src, const u64 address);

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)

{
@@ -658,6 +661,12 @@ static inline int zynqmp_pm_load_pdi(const u32 src, const u64 address) 
{

	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__ */