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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 <jollys@xilinx.com>
Subject: [PATCH v2 2/4] firmware: xilinx: Add system shutdown API interface
Date: Wed,  8 Jan 2020 15:54:21 -0800	[thread overview]
Message-ID: <1578527663-10243-3-git-send-email-jolly.shah@xilinx.com> (raw)
In-Reply-To: <1578527663-10243-1-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 <jollys@xilinx.com>
---
Changes in v2:
 - Updated Signed-off-by sequence.
---
 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 4c1117d..0f90793 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -668,6 +668,19 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 				   qos, ack, NULL);
 }
 
+/**
+ * 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,
@@ -691,6 +704,7 @@ static const struct zynqmp_eemi_ops eemi_ops = {
 	.set_requirement = zynqmp_pm_set_requirement,
 	.fpga_load = zynqmp_pm_fpga_load,
 	.fpga_get_status = zynqmp_pm_fpga_get_status,
+	.system_shutdown = zynqmp_pm_system_shutdown,
 };
 
 /**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 534814e..1fd246c 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -62,7 +62,8 @@
 
 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,
@@ -314,6 +315,7 @@ struct zynqmp_eemi_ops {
 			       const u32 capabilities,
 			       const u32 qos,
 			       const enum zynqmp_pm_request_ack ack);
+	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


  parent reply	other threads:[~2020-01-08 23:55 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-08 23:54 [PATCH v2 0/4] firmware: xilinx: Add xilinx specific sysfs interface Jolly Shah
2020-01-08 23:54 ` [PATCH v2 1/4] firmware: xilinx: Add " Jolly Shah
2020-01-14 14:52   ` Greg KH
2020-01-23 23:47     ` Jolly Shah
2020-01-24  6:03       ` Greg KH
2020-01-24 11:32         ` Sudeep Holla
2020-01-27 22:46           ` Jolly Shah
2020-01-27 23:01         ` Jolly Shah
2020-01-28  6:28           ` Greg KH
2020-01-30 23:59             ` Jolly Shah
2020-01-31  6:10               ` Greg KH
2020-01-31  9:05                 ` Rajan Vaja
2020-01-31  9:36                   ` 'Greg KH'
2020-02-11  0:57                     ` Jolly Shah
2020-02-14 17:10                       ` 'Greg KH'
2020-02-15  0:37                         ` Jolly Shah
2020-02-15  0:52                           ` 'Greg KH'
2020-02-19 22:50                             ` Jolly Shah
2020-03-06 23:55                             ` Jolly Shah
2020-03-07  8:47                               ` 'Greg KH'
2020-01-08 23:54 ` Jolly Shah [this message]
2020-01-08 23:54 ` [PATCH v2 3/4] firmware: xilinx: Add sysfs to set shutdown scope Jolly Shah
2020-01-08 23:54 ` [PATCH v2 4/4] firmware: xilinx: Add sysfs and IOCTL to set boot health status Jolly Shah

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