From: Ben Levinsky <ben.levinsky@xilinx.com> To: ohad@wizery.com, bjorn.andersson@linaro.org, michal.simek@xilinx.com, jollys@xilinx.com, rajan.vaja@xilinx.com, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] firmware: xilinx: Add zynqmp_get_node_status API Date: Mon, 24 Feb 2020 09:52:29 -0800 [thread overview] Message-ID: <1582566751-13118-4-git-send-email-ben.levinsky@xilinx.com> (raw) In-Reply-To: <1582566751-13118-1-git-send-email-ben.levinsky@xilinx.com> This patch adds a new API to provide access to the current power state of a sub-system on Zynqmp sub-system. Signed-off-by: Ben Levinsky <ben.levinsky@xilinx.com> --- drivers/firmware/xilinx/zynqmp.c | 42 ++++++++++++++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 3 +++ 2 files changed, 45 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 486dcb1..98e35d4 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -725,6 +725,47 @@ static int zynqmp_pm_request_wakeup(const u32 node, } /** + * zynqmp_pm_get_node_status - PM call to request a node's current power state + * @node: ID of the component or sub-system in question + * @status: Current operating state of the requested node + * @requirements: Current requirements asserted on the node, + * used for slave nodes only. + * @usage: Usage information, used for slave nodes only: + * PM_USAGE_NO_MASTER - No master is currently using + * the node + * PM_USAGE_CURRENT_MASTER - Only requesting master is + * currently using the node + * PM_USAGE_OTHER_MASTER - Only other masters are + * currently using the node + * PM_USAGE_BOTH_MASTERS - Both the current and at least + * one other master is currently + * using the node + * + * Return: Returns status, either success or error+reason + */ +static int zynqmp_pm_get_node_status(const u32 node, u32 *const status, + u32 *const requirements, u32 *const usage) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + if (!status) + return -EINVAL; + + ret = zynqmp_pm_invoke_fn(PM_GET_NODE_STATUS, node, 0, 0, + 0, ret_payload); + if (ret_payload[0] == XST_PM_SUCCESS) { + *status = ret_payload[1]; + if (requirements) + *requirements = ret_payload[2]; + if (usage) + *usage = ret_payload[3]; + } + + return ret; +} + +/** * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves * @node: Node ID of the slave * @capabilities: Requested capabilities of the slave @@ -769,6 +810,7 @@ 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, + .get_node_status = zynqmp_pm_get_node_status, }; /** diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 0a68849..fb4efc9 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -62,6 +62,7 @@ enum pm_api_id { PM_GET_API_VERSION = 1, + PM_GET_NODE_STATUS = 3, PM_REQUEST_NODE = 13, PM_RELEASE_NODE, PM_SET_REQUIREMENT, @@ -309,6 +310,8 @@ struct zynqmp_pm_query_data { struct zynqmp_eemi_ops { int (*get_api_version)(u32 *version); int (*get_chipid)(u32 *idcode, u32 *version); + int (*get_node_status)(const u32 node, u32 *const status, + u32 *const requirements, u32 *const usage); int (*fpga_load)(const u64 address, const u32 size, const u32 flags); int (*fpga_get_status)(u32 *value); int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out); -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Ben Levinsky <ben.levinsky@xilinx.com> To: ohad@wizery.com, bjorn.andersson@linaro.org, michal.simek@xilinx.com, jollys@xilinx.com, rajan.vaja@xilinx.com, robh+dt@kernel.org, mark.rutland@arm.com Cc: devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 3/5] firmware: xilinx: Add zynqmp_get_node_status API Date: Mon, 24 Feb 2020 09:52:29 -0800 [thread overview] Message-ID: <1582566751-13118-4-git-send-email-ben.levinsky@xilinx.com> (raw) In-Reply-To: <1582566751-13118-1-git-send-email-ben.levinsky@xilinx.com> This patch adds a new API to provide access to the current power state of a sub-system on Zynqmp sub-system. Signed-off-by: Ben Levinsky <ben.levinsky@xilinx.com> --- drivers/firmware/xilinx/zynqmp.c | 42 ++++++++++++++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 3 +++ 2 files changed, 45 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 486dcb1..98e35d4 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -725,6 +725,47 @@ static int zynqmp_pm_request_wakeup(const u32 node, } /** + * zynqmp_pm_get_node_status - PM call to request a node's current power state + * @node: ID of the component or sub-system in question + * @status: Current operating state of the requested node + * @requirements: Current requirements asserted on the node, + * used for slave nodes only. + * @usage: Usage information, used for slave nodes only: + * PM_USAGE_NO_MASTER - No master is currently using + * the node + * PM_USAGE_CURRENT_MASTER - Only requesting master is + * currently using the node + * PM_USAGE_OTHER_MASTER - Only other masters are + * currently using the node + * PM_USAGE_BOTH_MASTERS - Both the current and at least + * one other master is currently + * using the node + * + * Return: Returns status, either success or error+reason + */ +static int zynqmp_pm_get_node_status(const u32 node, u32 *const status, + u32 *const requirements, u32 *const usage) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + if (!status) + return -EINVAL; + + ret = zynqmp_pm_invoke_fn(PM_GET_NODE_STATUS, node, 0, 0, + 0, ret_payload); + if (ret_payload[0] == XST_PM_SUCCESS) { + *status = ret_payload[1]; + if (requirements) + *requirements = ret_payload[2]; + if (usage) + *usage = ret_payload[3]; + } + + return ret; +} + +/** * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves * @node: Node ID of the slave * @capabilities: Requested capabilities of the slave @@ -769,6 +810,7 @@ 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, + .get_node_status = zynqmp_pm_get_node_status, }; /** diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 0a68849..fb4efc9 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -62,6 +62,7 @@ enum pm_api_id { PM_GET_API_VERSION = 1, + PM_GET_NODE_STATUS = 3, PM_REQUEST_NODE = 13, PM_RELEASE_NODE, PM_SET_REQUIREMENT, @@ -309,6 +310,8 @@ struct zynqmp_pm_query_data { struct zynqmp_eemi_ops { int (*get_api_version)(u32 *version); int (*get_chipid)(u32 *idcode, u32 *version); + int (*get_node_status)(const u32 node, u32 *const status, + u32 *const requirements, u32 *const usage); int (*fpga_load)(const u64 address, const u32 size, const u32 flags); int (*fpga_get_status)(u32 *value); int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out); -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-02-24 17:52 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-24 17:52 [PATCH 0/5] remoteproc: Add zynqmp_r5 driver Ben Levinsky 2020-02-24 17:52 ` Ben Levinsky 2020-02-24 17:52 ` [PATCH 1/5] firmware: xilinx: Add ZynqMP firmware ioctl enums for RPU configuration Ben Levinsky 2020-02-24 17:52 ` Ben Levinsky 2020-03-12 7:32 ` Michal Simek 2020-03-12 7:32 ` Michal Simek 2020-02-24 17:52 ` [PATCH 2/5] firmware: xilinx: Add shutdown/wakeup APIs Ben Levinsky 2020-02-24 17:52 ` Ben Levinsky 2020-03-12 7:34 ` Michal Simek 2020-03-12 7:34 ` Michal Simek 2020-02-24 17:52 ` Ben Levinsky [this message] 2020-02-24 17:52 ` [PATCH 3/5] firmware: xilinx: Add zynqmp_get_node_status API Ben Levinsky 2020-03-11 16:26 ` Mathieu Poirier 2020-03-11 16:26 ` Mathieu Poirier 2020-02-24 17:52 ` [PATCH 4/5] dt-bindings: remoteproc: Add documentation for ZynqMP R5 rproc bindings Ben Levinsky 2020-02-24 17:52 ` Ben Levinsky 2020-03-02 20:27 ` Rob Herring 2020-03-02 20:27 ` Rob Herring 2020-03-11 16:55 ` Mathieu Poirier 2020-03-11 16:55 ` Mathieu Poirier 2020-02-24 17:52 ` [PATCH 5/5] remoteproc: Add initial zynqmp R5 remoteproc driver Ben Levinsky 2020-02-24 17:52 ` Ben Levinsky 2020-03-05 23:12 ` Michael Auchter 2020-03-05 23:12 ` Michael Auchter 2020-03-11 17:38 ` Mathieu Poirier 2020-03-11 17:38 ` Mathieu Poirier
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