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Tue, 16 Jul 2024 16:50:38 -0500 From: Ben Levinsky To: , , , , Subject: [PATCH] mailbox: zynqmp-ipi: Make polling period configurable from kconfig Date: Tue, 16 Jul 2024 14:50:37 -0700 Message-ID: <20240716215037.3667214-1-ben.levinsky@amd.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: None (SATLEXMB05.amd.com: ben.levinsky@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00003AE5:EE_|DS7PR12MB6005:EE_ X-MS-Office365-Filtering-Correlation-Id: fc97f4ee-6aba-4621-a609-08dca5e1550c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?DcgcBKshXz10xCO0/YsrN/ij7XBDSF85715XnyK+V4uqsB0UiFHgKqSP9PBD?= =?us-ascii?Q?Giue3iGafv3PaHuRiaKEvIxXzCCL65ply6A1y9nWStrY1CRvahKO/iBmS2kY?= =?us-ascii?Q?4zQwaoT6sshNijO+zW8WghZ7K3sqcenYA/u5OirFglzflB7DAQNsBM+622mE?= =?us-ascii?Q?LvN+J53LcR4l/oPAa1PiUPj0HEXfNr69VrJkwVomm5ctbGYhPnr+sI/qAXRf?= =?us-ascii?Q?XuGeOPJi2LR+biNSglKTryAjVB0pPwxoA1QP87TRUyIQLq+WDFJNU8BPt9K1?= =?us-ascii?Q?WnTyHLI7KXWKKuEFJa/sUsQcYIq+KiP5l/Hwh+nIBQpZAmfWDh/HfoRVCbN5?= =?us-ascii?Q?GlE8PTjXT1lioZyviWzMbEraYARVbFVvzVD+VIehn0CecyWt4GRoPgd79NL2?= =?us-ascii?Q?AxxvyaGNBmns70Nkb1C3IZglijCB75D0LpoJHdv5jbOOQfpMu5WbtfOF46Gq?= =?us-ascii?Q?e4uTQFHpl1olnsdwfdxrRGF5+9n+5kPBz6ODwpQLCvbSjx0UsJk7f6PNSISz?= =?us-ascii?Q?vpBayAUg3+OKarFtDoRL3Ug6/bsf85OiUR07+cv8jDNn1iccX5w6rBvIa+gh?= =?us-ascii?Q?VqPoaPGWUv7Krsd9VLdlJvYWbcbiVWG4jEDNVg8Tcn3s2feY2/PnRrFnmnOk?= =?us-ascii?Q?g362cc3/czrQboh6gsklWwJwBE1QmO3Qj2gc5kKD1mTD5wd0cYU4JZXjEbvs?= =?us-ascii?Q?wIAck5/7JEF61b9WUp0BJ/pAkYjdTKmrGl9dR5O+bNM0YD/uNEJ3Zvny4zbW?= =?us-ascii?Q?vAxPKaMyJDQeEqduMa5rOs4IRFY2v80K4rXnnX+CzA3gRltbThPEHe9TzPfp?= =?us-ascii?Q?6IT/DSOnxvQzjfA6my1MiGZRWer3Q8GFGwG3djd3nnjvTn5jD3c8bRLEmVYo?= =?us-ascii?Q?jhagL2nIxzdErkiunpKnK70Whlk4XQNb2hkQo0b3adhvjmcmWd8ILfDmSslh?= =?us-ascii?Q?hECB1WvaV+KEPl49QZj6iQV9+UpWfhsM3gwYIQC9BwA1rZokBaYzDxgGL5aK?= =?us-ascii?Q?sZ2HvVyUQV2kr+MLrZXXo9x6C6oxsm6VE26OpeupxS5qA0kvWuQ0REwawlH5?= =?us-ascii?Q?pBAR3ZCKN4KxQQ9hBPAJYIYoMRDVmVd10uph3zVULqwIRPDJTwPnvIPQetRa?= =?us-ascii?Q?sSS+M11g1vmqg9ZyFRo042yWsE7hviz0wIVCtAAjjbUMdvf+Ix3mbPydc7rW?= =?us-ascii?Q?fIqec88p645vXDWnNrQ1Ron7wWwpYoynNUJcxfcsmZPUrM4Pe1fbEk2W9tR3?= =?us-ascii?Q?eivMuacX95Z0tdAFM1LLZqDDkZJgvQlDgpwnQJRiVqyIBdiu51CLAEmWJxcE?= =?us-ascii?Q?vV7I5vrxu6qyoDwvuq3IpTe0XfHYDZaJ4YFJBBNCzCIOD5PBWJPU1W7Qp1YY?= =?us-ascii?Q?B5OesugLKgm/TaJG7UgApu/1sQhkNxdBuQyfmGN1ISIwGabobt7CXaBM8peQ?= =?us-ascii?Q?awAUMGEXqYXC0NZfRVhdGhaJtj4wBRaP?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(1800799024)(36860700013)(82310400026)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jul 2024 21:50:39.1947 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fc97f4ee-6aba-4621-a609-08dca5e1550c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00003AE5.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6005 Content-Type: text/plain; charset="utf-8" The polling period for ZynqMP IPI Mailbox is currently hard-coded to five milliseconds. To avoid patching this when modifying the value, the value is now set with default that can be overwritten from kconfig prompt. Signed-off-by: Ben Levinsky --- drivers/mailbox/Kconfig | 12 ++++++++++++ drivers/mailbox/zynqmp-ipi-mailbox.c | 9 ++++++++- 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index 3b8842c4a340..c87a92400616 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -259,6 +259,18 @@ config ZYNQMP_IPI_MBOX message to the IPI buffer and will access the IPI control registers to kick the other processor or enquire status. =20 +config ZYNQMP_IPI_MBOX_POLL_PERIOD + int + prompt "ZynqMP IPI Mailbox driver polling period" + default 5 + depends on ZYNQMP_IPI_MBOX + help + By default the Xilinx-AMD IPI mailbox driver has a polling period + of five milliseconds. If this option is set then the provided value + will be used. + + Leave as default if not sure. + config SUN6I_MSGBOX tristate "Allwinner sun6i/sun8i/sun9i/sun50i Message Box" depends on ARCH_SUNXI || COMPILE_TEST diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-= ipi-mailbox.c index 4acf5612487c..df540e2b9dbe 100644 --- a/drivers/mailbox/zynqmp-ipi-mailbox.c +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c @@ -64,6 +64,13 @@ =20 #define MAX_SGI 16 =20 +/* Polling period in milliseconds. */ +#ifndef CONFIG_ZYNQMP_IPI_MBOX_POLL_PERIOD +#define ZYNQMP_IPI_MBOX_POLL_PERIOD (5U) +#else +#define ZYNQMP_IPI_MBOX_POLL_PERIOD CONFIG_ZYNQMP_IPI_MBOX_POLL_PERIOD +#endif + /** * struct zynqmp_ipi_mchan - Description of a Xilinx ZynqMP IPI mailbox ch= annel * @is_opened: indicate if the IPI channel is opened @@ -537,7 +544,7 @@ static int zynqmp_ipi_mbox_probe(struct zynqmp_ipi_mbox= *ipi_mbox, mbox->num_chans =3D 2; mbox->txdone_irq =3D false; mbox->txdone_poll =3D true; - mbox->txpoll_period =3D 5; + mbox->txpoll_period =3D ZYNQMP_IPI_MBOX_POLL_PERIOD; mbox->of_xlate =3D zynqmp_ipi_of_xlate; chans =3D devm_kzalloc(mdev, 2 * sizeof(*chans), GFP_KERNEL); if (!chans) --=20 2.25.1