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Tue, 20 Apr 2021 01:20:32 -0700 Envelope-to: git@xilinx.com, robh+dt@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, chinnikishore369@gmail.com Received: from [10.140.6.60] (port=45276 helo=xhdnavam40.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1lYlcV-0007C5-CA; Tue, 20 Apr 2021 01:20:31 -0700 From: Nava kishore Manne To: , , , , , , , , , , , , , , , Subject: [PATCH 3/5] firmware: xilinx: Add afi ioctl support Date: Tue, 20 Apr 2021 13:41:51 +0530 Message-ID: <20210420081153.17020-4-nava.manne@xilinx.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210420081153.17020-1-nava.manne@xilinx.com> References: <20210420081153.17020-1-nava.manne@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 51ffb443-6cb5-4664-e186-08d903d52ef5 X-MS-TrafficTypeDiagnostic: SA0PR02MB7418: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:4941; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Apr 2021 08:20:39.9719 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 51ffb443-6cb5-4664-e186-08d903d52ef5 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: CY1NAM02FT033.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR02MB7418 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds afi ioctl to support dynamic PS-PL bus width settings. Signed-off-by: Nava kishore Manne --- drivers/firmware/xilinx/zynqmp.c | 13 +++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 7 +++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 7eb9958662dd..ada9eb9e26e3 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -713,6 +713,19 @@ int zynqmp_pm_read_pggs(u32 index, u32 *value) } EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs); +/** + * zynqmp_pm_afi() - PM API for setting the PS-PL bus width + * @index: Register index value + * @value: value to be written into the register + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_afi(u32 index, u32 value) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_AFI, index, value, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_afi); + /** * zynqmp_pm_set_boot_health_status() - PM API for setting healthy boot status * @value: Status value to be written diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 71177b17eee5..792fb4f5d86f 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -113,6 +113,7 @@ enum pm_ioctl_id { IOCTL_READ_PGGS = 15, /* Set healthy bit value */ IOCTL_SET_BOOT_HEALTH_STATUS = 17, + IOCTL_AFI = 18, }; enum pm_query_id { @@ -353,6 +354,7 @@ 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); int zynqmp_pm_set_boot_health_status(u32 value); +int zynqmp_pm_afi(u32 index, u32 value); #else static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void) { @@ -537,6 +539,11 @@ static inline int zynqmp_pm_set_boot_health_status(u32 value) { return -ENODEV; } + +static inline int zynqmp_pm_afi(u32 index, u32 value) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */ -- 2.18.0