From patchwork Thu Mar 23 06:24:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13185062 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5AEBC76196 for ; Thu, 23 Mar 2023 06:25:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229980AbjCWGZK (ORCPT ); Thu, 23 Mar 2023 02:25:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230074AbjCWGZJ (ORCPT ); Thu, 23 Mar 2023 02:25:09 -0400 Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D28611E29D; Wed, 22 Mar 2023 23:25:06 -0700 (PDT) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 32N6OsN0051479; Thu, 23 Mar 2023 01:24:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1679552694; bh=WG8t4T8UwxXdpzYbVy4h0wjL0ix8sZ+o9pwyH/fdReg=; h=From:To:CC:Subject:Date; b=J7ae0Rt1ApFvgddMHx+XUATrNMaNwk8srrH6Cgk+oH/xausnZ9yB3+cQdIeSSKdqW 6go1N1XVVdBa+FjOlDuVjzyibLDYYJSTOtIQcBLqbBUt3uYzQm+SaewL7vbgI2SLDD 4v9/mfLYA16hVd+RvHA5gAITWu6seTHiWChuJ0/A= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 32N6Os5i110132 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 23 Mar 2023 01:24:54 -0500 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Thu, 23 Mar 2023 01:24:54 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Thu, 23 Mar 2023 01:24:54 -0500 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 32N6Osxe069731; Thu, 23 Mar 2023 01:24:54 -0500 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 32N6OqXq010546; Thu, 23 Mar 2023 01:24:53 -0500 From: MD Danish Anwar To: "Andrew F. Davis" , Suman Anna , Roger Quadros , Vignesh Raghavendra , Tero Kristo , MD Danish Anwar , Mathieu Poirier , Bjorn Andersson , Santosh Shilimkar , Nishanth Menon CC: , , , , , , Subject: [PATCH v5 0/5] Introduce PRU platform consumer API Date: Thu, 23 Mar 2023 11:54:46 +0530 Message-ID: <20230323062451.2925996-1-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Hi All, The Programmable Real-Time Unit and Industrial Communication Subsystem (PRU-ICSS or simply PRUSS) on various TI SoCs consists of dual 32-bit RISC cores (Programmable Real-Time Units, or PRUs) for program execution. There are 3 foundation components for TI PRUSS subsystem: the PRUSS platform driver, the PRUSS INTC driver and the PRUSS remoteproc driver. All of them have already been merged and can be found under: 1) drivers/soc/ti/pruss.c Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml 2) drivers/irqchip/irq-pruss-intc.c Documentation/devicetree/bindings/interrupt-controller/ti,pruss-intc.yaml 3) drivers/remoteproc/pru_rproc.c Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml The programmable nature of the PRUs provide flexibility to implement custom peripheral interfaces, fast real-time responses, or specialized data handling. Example of a PRU consumer drivers will be: - Software UART over PRUSS - PRU-ICSS Ethernet EMAC In order to make usage of common PRU resources and allow the consumer drivers to configure the PRU hardware for specific usage the PRU API is introduced. This is the v5 of the old patch series[1]. This doesn't have any functional changes, the old series has been rebased on linux-next. Changes from v4 [1] to v5: *) Addressed Roger's comment to change function argument in API pruss_cfg_xfr_enable(). Instead of asking user to calcualte mask, now user will just provide the pru_type and mask will be calcualted inside the API. *) Moved enum pru_type from pru_rproc.c to include/linux/remoteproc/pruss.h in patch 4 / 5. *) Moved enum pruss_gpi_mode from patch 3/5 to patch 4/5 to introduce this enum in same patch as the API using it. *) Moved enum pruss_gp_mux_sel from patch 3/5 to patch 5/5 to introduce this enum in same patch as the API using it. *) Created new headefile drivers/soc/ti/pruss.h, private to PRUSS as asked by Roger. Moved all private definitions and pruss_cfg_read () / update () APIs to this newly added headerfile. *) Renamed include/linux/pruss_driver.h to include/linux/pruss_internal.h as suggested by Andrew and Roger. Changes from v3 [2] to v4: *) Added my SoB tags in all patches as earlier SoB tags were missing in few patches. *) Added Roger's RB tags in 3 patches. *) Addressed Roger's comment in patch 4/5 of this series. Added check for invalid GPI mode in pruss_cfg_gpimode() API. *) Removed patch [5] from this series as that patch is no longer required. *) Made pruss_cfg_read() and pruss_cfg_update() APIs internal to pruss.c by removing EXPORT_SYMBOL_GPL and making them static. Now these APIs are internal to pruss.c and PRUSS CFG space is not exposed. *) Moved APIs pruss_cfg_gpimode(), pruss_cfg_miirt_enable(), pruss_cfg_xfr_enable(), pruss_cfg_get_gpmux(), pruss_cfg_set_gpmux() to pruss.c file as they are using APIs pruss_cfg_read / update. Defined these APIs in pruss.h file as other drivers use these APIs to perform respective operations. Changes from v2 to v3: *) No functional changes, the old series has been rebased on linux-next (tag: next-20230306). This series depends on another series which is already merged in the remoteproc tree [3] and is part of v6.3-rc1. This series and the remoteproc series form the PRUSS consumer API which can be used by consumer drivers to utilize the PRUs. One example of the consumer driver is the PRU-ICSSG ethernet driver [4],which depends on this series and the remoteproc series [3]. [1] https://lore.kernel.org/all/20230313111127.1229187-1-danishanwar@ti.com/ [2] https://lore.kernel.org/all/20230306110934.2736465-1-danishanwar@ti.com/ [3] https://lore.kernel.org/all/20230106121046.886863-1-danishanwar@ti.com/#t [4] https://lore.kernel.org/all/20230210114957.2667963-1-danishanwar@ti.com/ [5] https://lore.kernel.org/all/20230306110934.2736465-6-danishanwar@ti.com/ Thanks and Regards, Md Danish Anwar Andrew F. Davis (1): soc: ti: pruss: Add pruss_{request,release}_mem_region() API Suman Anna (2): soc: ti: pruss: Add pruss_cfg_read()/update() API soc: ti: pruss: Add helper functions to set GPI mode, MII_RT_event and XFR Tero Kristo (2): soc: ti: pruss: Add pruss_get()/put() API soc: ti: pruss: Add helper functions to get/set PRUSS_CFG_GPMUX drivers/remoteproc/pru_rproc.c | 17 +- drivers/soc/ti/pruss.c | 256 +++++++++++++++++- drivers/soc/ti/pruss.h | 112 ++++++++ .../{pruss_driver.h => pruss_internal.h} | 34 +-- include/linux/remoteproc/pruss.h | 139 ++++++++++ 5 files changed, 516 insertions(+), 42 deletions(-) create mode 100644 drivers/soc/ti/pruss.h rename include/linux/{pruss_driver.h => pruss_internal.h} (58%) Reviewed-by: Tony Lindgren