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Mon, 24 Feb 2020 09:52:35 -0800 Received: from xsj-pvapsmtp01 (mailhost.xilinx.com [149.199.38.66]) by xsj-smtp-dlp2.xlnx.xilinx.com (8.13.8/8.13.1) with ESMTP id 01OHqVfZ015188; Mon, 24 Feb 2020 09:52:31 -0800 Received: from [172.19.2.206] (helo=xsjblevinsk50.xilinx.com) by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1j6HuB-0007aE-Ko; Mon, 24 Feb 2020 09:52:31 -0800 From: Ben Levinsky 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 2/5] firmware: xilinx: Add shutdown/wakeup APIs Date: Mon, 24 Feb 2020 09:52:28 -0800 Message-Id: <1582566751-13118-3-git-send-email-ben.levinsky@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582566751-13118-1-git-send-email-ben.levinsky@xilinx.com> References: <1582566751-13118-1-git-send-email-ben.levinsky@xilinx.com> X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83; 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Ip=[149.199.60.83]; Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR02MB5655 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add shutdown/wakeup a resource eemi operations to shutdown or bringup a resource. Signed-off-by: Ben Levinsky --- drivers/firmware/xilinx/zynqmp.c | 35 +++++++++++++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 8 ++++++++ 2 files changed, 43 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 20e4574..486dcb1 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -692,6 +692,39 @@ static int zynqmp_pm_release_node(const u32 node) } /** + * zynqmp_pm_force_powerdown - PM call to request for another PU or subsystem to + * be powered down forcefully + * @target: Node ID of the targeted PU or subsystem + * @ack: Flag to specify whether acknowledge is requested + * + * Return: Returns status, either success or error+reason + */ +static int zynqmp_pm_force_powerdown(const u32 target, + const enum zynqmp_pm_request_ack ack) +{ + return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, target, ack, 0, 0, NULL); +} + +/** + * zynqmp_pm_request_wakeup - PM call to wake up selected master or subsystem + * @node: Node ID of the master or subsystem + * @set_addr: Specifies whether the address argument is relevant + * @address: Address from which to resume when woken up + * @ack: Flag to specify whether acknowledge requested + * + * Return: Returns status, either success or error+reason + */ +static int zynqmp_pm_request_wakeup(const u32 node, + const bool set_addr, + const u64 address, + const enum zynqmp_pm_request_ack ack) +{ + /* set_addr flag is encoded into 1st bit of address */ + return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, node, address | set_addr, + address >> 32, ack, NULL); +} + +/** * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves * @node: Node ID of the slave * @capabilities: Requested capabilities of the slave @@ -731,6 +764,8 @@ static const struct zynqmp_eemi_ops eemi_ops = { .set_suspend_mode = zynqmp_pm_set_suspend_mode, .request_node = zynqmp_pm_request_node, .release_node = zynqmp_pm_release_node, + .force_powerdown = zynqmp_pm_force_powerdown, + .request_wakeup = zynqmp_pm_request_wakeup, .set_requirement = zynqmp_pm_set_requirement, .fpga_load = zynqmp_pm_fpga_load, .fpga_get_status = zynqmp_pm_fpga_get_status, diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index b8ca118..0a68849 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -82,6 +82,8 @@ enum pm_api_id { PM_CLOCK_GETRATE, PM_CLOCK_SETPARENT, PM_CLOCK_GETPARENT, + PM_FORCE_POWERDOWN = 8, + PM_REQUEST_WAKEUP = 10, PM_FEATURE_CHECK = 63, PM_API_MAX, }; @@ -330,6 +332,12 @@ struct zynqmp_eemi_ops { const u32 qos, const enum zynqmp_pm_request_ack ack); int (*release_node)(const u32 node); + int (*force_powerdown)(const u32 target, + const enum zynqmp_pm_request_ack ack); + int (*request_wakeup)(const u32 node, + const bool set_addr, + const u64 address, + const enum zynqmp_pm_request_ack ack); int (*set_requirement)(const u32 node, const u32 capabilities, const u32 qos,