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arm64: ZynqMP SoC changes for v5.20

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- Register SGI separately out of EEMI
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Merge tag 'zynqmp-soc-for-v5.20' of https://github.com/Xilinx/linux-xlnx into arm/soc

arm64: ZynqMP SoC changes for v5.20

- Register SGI separately out of EEMI

* tag 'zynqmp-soc-for-v5.20' of https://github.com/Xilinx/linux-xlnx:
  firmware: xilinx: Add TF_A_PM_REGISTER_SGI SMC call

Link: https://lore.kernel.org/r/0196d1f3-e9c7-ef51-143d-e98b14980f63@monstr.eu
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2022-07-08 09:11:24 +02:00
commit 8fcdf10295
3 changed files with 24 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/firmware/xilinx/zynqmp.c
View File

@ -2,7 +2,7 @@
/*
* Xilinx Zynq MPSoC Firmware layer
*
* Copyright (C) 2014-2021 Xilinx, Inc.
* Copyright (C) 2014-2022 Xilinx, Inc.
*
* Michal Simek <michal.simek@xilinx.com>
* Davorin Mista <davorin.mista@aggios.com>
@ -340,6 +340,20 @@ int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
static u32 pm_api_version;
static u32 pm_tz_version;
int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset)
{
int ret;
ret = zynqmp_pm_invoke_fn(TF_A_PM_REGISTER_SGI, sgi_num, reset, 0, 0,
NULL);
if (!ret)
return ret;
/* try old implementation as fallback strategy if above fails */
return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_REGISTER_SGI, sgi_num,
reset, NULL);
}
/**
* zynqmp_pm_get_api_version() - Get version number of PMU PM firmware
* @version: Returned version value

5
drivers/soc/xilinx/xlnx_event_manager.c
View File

@ -647,8 +647,7 @@ static int xlnx_event_manager_probe(struct platform_device *pdev)
cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "soc/event:starting",
xlnx_event_cpuhp_start, xlnx_event_cpuhp_down);
ret = zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_REGISTER_SGI, sgi_num,
0, NULL);
ret = zynqmp_pm_register_sgi(sgi_num, 0);
if (ret) {
dev_err(&pdev->dev, "SGI %d Registration over TF-A failed with %d\n", sgi_num, ret);
xlnx_event_cleanup_sgi(pdev);
@ -681,7 +680,7 @@ static int xlnx_event_manager_remove(struct platform_device *pdev)
kfree(eve_data);
}
ret = zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_REGISTER_SGI, 0, 1, NULL);
ret = zynqmp_pm_register_sgi(0, 1);
if (ret)
dev_err(&pdev->dev, "SGI unregistration over TF-A failed with %d\n", ret);

7
include/linux/firmware/xlnx-zynqmp.h
View File

@ -34,6 +34,7 @@
#define PM_API_VERSION_2 2
/* ATF only commands */
#define TF_A_PM_REGISTER_SGI 0xa04
#define PM_GET_TRUSTZONE_VERSION 0xa03
#define PM_SET_SUSPEND_MODE 0xa02
#define GET_CALLBACK_DATA 0xa01
@ -468,6 +469,7 @@ int zynqmp_pm_feature(const u32 api_id);
int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id);
int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value);
int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload);
int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset);
#else
static inline int zynqmp_pm_get_api_version(u32 *version)
{
@ -733,6 +735,11 @@ static inline int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
{
return -ENODEV;
}
static inline int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset)
{
return -ENODEV;
}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */