[PATCH v7 1/6] firmware: xilinx: add register notifier in zynqmp firmware
From: Abhyuday Godhasara <hidden>
Date: 2021-10-26 04:25:44
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
In zynqmp-firmware, register notifier is not supported, add support of register notifier in zynqmp-firmware. Signed-off-by: Tejas Patel <redacted> Signed-off-by: Abhyuday Godhasara <redacted> Acked-by: Michal Simek <redacted> --- Changes in v7: - Update the version history. Changes in v6: - The body of the zynqmp_pm_load_pdi was missing in v5 due to force merge during rebase and getting compilation failure when Xilinx Event management driver is disabled. So, add/correct the line of code missing. Changes in v5: - None Changes in v4: - Rebase on latest tree Changes in v3: - None 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 a3cadbaf3cba..6e653e9cea2d 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c@@ -1053,6 +1053,29 @@ 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 56b426fe020c..96aaadc44c3f 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>
@@ -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,
@@ -416,6 +417,8 @@ 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) {
@@ -632,6 +635,12 @@ 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__ */
--
2.32.0.93.g670b81a
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