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: Jolly Shah <jolly.shah@xilinx.com>,
Rajan Vaja <rajan.vaja@xilinx.com>,
rajanv@xilinx.com, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/5] firmware: xilinx: Add system shutdown API interface
Date: Wed, 4 Dec 2019 15:29:17 -0800 [thread overview]
Message-ID: <1575502159-11327-4-git-send-email-jolly.shah@xilinx.com> (raw)
In-Reply-To: <1575502159-11327-1-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: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
---
drivers/firmware/xilinx/zynqmp.c | 14 ++++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 4 +++-
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 9836174..8dcf5a4 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -690,6 +690,19 @@ static int zynqmp_pm_config_reg_access(u32 register_access_id, u32 address,
address, mask, value, out);
}
+/**
+ * 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
+ */
+static 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 const struct zynqmp_eemi_ops eemi_ops = {
.get_api_version = zynqmp_pm_get_api_version,
.get_chipid = zynqmp_pm_get_chipid,
@@ -714,6 +727,7 @@ static const struct zynqmp_eemi_ops eemi_ops = {
.fpga_load = zynqmp_pm_fpga_load,
.fpga_get_status = zynqmp_pm_fpga_get_status,
.register_access = zynqmp_pm_config_reg_access,
+ .system_shutdown = zynqmp_pm_system_shutdown,
};
/**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index bf6e9db..b96ea5d 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -61,7 +61,8 @@
enum pm_api_id {
PM_GET_API_VERSION = 1,
- PM_REQUEST_NODE = 13,
+ PM_SYSTEM_SHUTDOWN = 12,
+ PM_REQUEST_NODE,
PM_RELEASE_NODE,
PM_SET_REQUIREMENT,
PM_RESET_ASSERT = 17,
@@ -322,6 +323,7 @@ struct zynqmp_eemi_ops {
const enum zynqmp_pm_request_ack ack);
int (*register_access)(u32 register_access_id, u32 address,
u32 mask, u32 value, u32 *out);
+ int (*system_shutdown)(const u32 type, const u32 subtype);
};
int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
--
2.7.4
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next prev parent reply other threads:[~2019-12-04 23:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-04 23:29 [PATCH 0/5] firmware: xilinx: Add xilinx specific sysfs interface Jolly Shah
2019-12-04 23:29 ` [PATCH 1/5] firmware: xilinx: Adds new eemi call for reg access Jolly Shah
2019-12-18 14:10 ` Michal Simek
2019-12-18 14:16 ` Michal Simek
2019-12-18 14:55 ` Sudeep Holla
2019-12-04 23:29 ` [PATCH 2/5] firmware: xilinx: Add sysfs interface Jolly Shah
2019-12-18 14:21 ` Michal Simek
2019-12-04 23:29 ` Jolly Shah [this message]
2019-12-18 14:24 ` [PATCH 3/5] firmware: xilinx: Add system shutdown API interface Michal Simek
2019-12-04 23:29 ` [PATCH 4/5] firmware: xilinx: Add sysfs to set shutdown scope Jolly Shah
2019-12-18 14:25 ` Michal Simek
2019-12-04 23:29 ` [PATCH 5/5] firmware: xilinx: Add sysfs and IOCTL to set boot health status Jolly Shah
2019-12-18 14:28 ` Michal Simek
2019-12-18 14:45 ` [PATCH 0/5] firmware: xilinx: Add xilinx specific sysfs interface Sudeep Holla
2020-01-02 21:01 ` Jolly Shah
2020-01-03 11:31 ` Sudeep Holla
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