From: Jolly Shah <jolly.shah@xilinx.com>
To: ard.biesheuvel@linaro.org, mingo@kernel.org,
gregkh@linuxfoundation.org, matt@codeblueprint.co.uk,
sudeep.holla@arm.com, hkallweit1@gmail.com,
keescook@chromium.org, dmitry.torokhov@gmail.com,
michal.simek@xilinx.com
Cc: rajanv@xilinx.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Rajan Vaja <rajan.vaja@xilinx.com>,
Jolly Shah <jolly.shah@xilinx.com>
Subject: [PATCH v4 23/25] firmware: xilinx: Add system shutdown API interface
Date: Thu, 9 Apr 2020 12:12:12 -0700 [thread overview]
Message-ID: <1586459534-8997-24-git-send-email-jolly.shah@xilinx.com> (raw)
In-Reply-To: <1586459534-8997-1-git-send-email-jolly.shah@xilinx.com>
From: Rajan Vaja <rajan.vaja@xilinx.com>
Add system shutdown API interface which asks firmware to
perform system shutdown/restart.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
drivers/firmware/xilinx/zynqmp.c | 13 +++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 6 ++++++
2 files changed, 19 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 2fe4f57..9ba376c 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -875,6 +875,19 @@ int zynqmp_pm_aes_engine(const u64 address, u32 *out)
}
EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine);
+/**
+ * zynqmp_pm_system_shutdown - PM call to request a system shutdown or restart
+ * @type: Shutdown or restart? 0 for shutdown, 1 for restart
+ * @subtype: Specifies which system should be restarted or shut down
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
+{
+ return zynqmp_pm_invoke_fn(PM_SYSTEM_SHUTDOWN, type, subtype,
+ 0, 0, NULL);
+}
+
static ssize_t ggs_show(struct device *device,
struct device_attribute *attr,
char *buf,
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index c1356e9..2254c7c 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -64,6 +64,7 @@
enum pm_api_id {
PM_GET_API_VERSION = 1,
+ PM_SYSTEM_SHUTDOWN = 12,
PM_REQUEST_NODE = 13,
PM_RELEASE_NODE,
PM_SET_REQUIREMENT,
@@ -340,6 +341,7 @@ int zynqmp_pm_write_ggs(u32 index, u32 value);
int zynqmp_pm_read_ggs(u32 index, u32 *value);
int zynqmp_pm_write_pggs(u32 index, u32 value);
int zynqmp_pm_read_pggs(u32 index, u32 *value);
+int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype);
#else
static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
{
@@ -482,6 +484,10 @@ static inline int zynqmp_pm_read_pggs(u32 index, u32 *value)
{
return -ENODEV;
}
+static inline int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
+{
+ return -ENODEV;
+}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */
--
2.7.4
next prev parent reply other threads:[~2020-04-09 19:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 19:11 [PATCH v4 00/25] firmware: xilinx: Add xilinx specific sysfs interface Jolly Shah
2020-04-09 19:11 ` [PATCH v4 01/25] firmware: xilinx: Remove eemi ops for get_api_version Jolly Shah
2020-04-09 19:11 ` [PATCH v4 02/25] firmware: xilinx: Remove eemi ops for get_chipid Jolly Shah
2020-04-09 19:11 ` [PATCH v4 03/25] firmware: xilinx: Remove eemi ops for query_data Jolly Shah
2020-04-09 19:11 ` [PATCH v4 04/25] firmware: xilinx: Remove eemi ops for clock_enable Jolly Shah
2020-04-09 19:11 ` [PATCH v4 05/25] firmware: xilinx: Remove eemi ops for clock_disable Jolly Shah
2020-04-09 19:11 ` [PATCH v4 06/25] firmware: xilinx: Remove eemi ops for clock_getstate Jolly Shah
2020-04-09 19:11 ` [PATCH v4 07/25] firmware: xilinx: Remove eemi ops for clock_setdivider Jolly Shah
2020-04-09 19:11 ` [PATCH v4 08/25] firmware: xilinx: Remove eemi ops for clock_getdivider Jolly Shah
2020-04-09 19:11 ` [PATCH v4 09/25] firmware: xilinx: Remove eemi ops for clock set/get rate Jolly Shah
2020-04-09 19:11 ` [PATCH v4 10/25] firmware: xilinx: Remove eemi ops for clock set/get parent Jolly Shah
2020-04-09 19:12 ` [PATCH v4 11/25] firmware: xilinx: Use APIs instead of IOCTLs Jolly Shah
2020-04-09 19:12 ` [PATCH v4 12/25] firmware: xilinx: Remove eemi ops for reset_assert Jolly Shah
2020-04-09 19:12 ` [PATCH v4 13/25] firmware: xilinx: Remove eemi ops for reset_get_status Jolly Shah
2020-04-09 19:12 ` [PATCH v4 14/25] firmware: xilinx: Remove eemi ops for init_finalize Jolly Shah
2020-04-09 19:12 ` [PATCH v4 15/25] firmware: xilinx: Remove eemi ops for set_suspend_mode Jolly Shah
2020-04-09 19:12 ` [PATCH v4 16/25] firmware: xilinx: Remove eemi ops for request_node Jolly Shah
2020-04-09 19:12 ` [PATCH v4 17/25] firmware: xilinx: Remove eemi ops for release_node Jolly Shah
2020-04-09 19:12 ` [PATCH v4 18/25] firmware: xilinx: Remove eemi ops for set_requirement Jolly Shah
2020-04-09 19:12 ` [PATCH v4 19/25] firmware: xilinx: Remove eemi ops for aes engine Jolly Shah
2020-04-09 19:12 ` [PATCH v4 20/25] firmware: xilinx: Remove eemi ops for fpga related APIs Jolly Shah
2020-04-09 19:12 ` [PATCH v4 21/25] firmware: xilinx: Add APIs to read/write GGS/PGGS registers Jolly Shah
2020-04-09 19:12 ` [PATCH v4 22/25] firmware: xilinx: Add sysfs interface Jolly Shah
2020-04-09 19:12 ` Jolly Shah [this message]
2020-04-09 19:12 ` [PATCH v4 24/25] firmware: xilinx: Add sysfs to set shutdown scope Jolly Shah
2020-04-09 19:12 ` [PATCH v4 25/25] firmware: xilinx: Add sysfs and API to set boot health status Jolly Shah
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