From patchwork Mon Mar 13 11:11:26 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: 662915 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 603C4C61DA4 for ; Mon, 13 Mar 2023 11:13:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230187AbjCMLNI (ORCPT ); Mon, 13 Mar 2023 07:13:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230417AbjCMLMa (ORCPT ); Mon, 13 Mar 2023 07:12:30 -0400 Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFE8561AB2; Mon, 13 Mar 2023 04:11:49 -0700 (PDT) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 32DBBeZu066078; Mon, 13 Mar 2023 06:11:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1678705900; bh=3g7gUvbaUGGjFsZlN72N1+L5tzfSn6IfmMAk5xEZZJU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=PftXJAcMWw7svuC0MjOBEqUhzzpLQOWfYakPMlvlCzeyWOatmMRGUK07s8JKS/zY6 4UQ1cmFOIkPrfTxRXXZUsw0exifoxVLFweUKs9MKLWv2kI4iDx40iU/a46llq9g7cM xogV1qSvVdJRD9rcXUazUMPMD55mjMBta2+Hezy0= Received: from DFLE108.ent.ti.com (dfle108.ent.ti.com [10.64.6.29]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 32DBBewf124069 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 13 Mar 2023 06:11:40 -0500 Received: from DFLE106.ent.ti.com (10.64.6.27) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Mon, 13 Mar 2023 06:11:39 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE106.ent.ti.com (10.64.6.27) 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; Mon, 13 Mar 2023 06:11:39 -0500 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 32DBBdGN058416; Mon, 13 Mar 2023 06:11:39 -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 32DBBcO0032279; Mon, 13 Mar 2023 06:11:39 -0500 From: MD Danish Anwar To: "Andrew F. Davis" , Suman Anna , Roger Quadros , Vignesh Raghavendra , MD Danish Anwar , Mathieu Poirier , Bjorn Andersson , Santosh Shilimkar , Nishanth Menon CC: , , , , , , Subject: [PATCH v4 4/5] soc: ti: pruss: Add helper functions to set GPI mode, MII_RT_event and XFR Date: Mon, 13 Mar 2023 16:41:26 +0530 Message-ID: <20230313111127.1229187-5-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230313111127.1229187-1-danishanwar@ti.com> References: <20230313111127.1229187-1-danishanwar@ti.com> 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 From: Suman Anna The PRUSS CFG module is represented as a syscon node and is currently managed by the PRUSS platform driver. Add easy accessor functions to set GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable to enable the PRUSS Ethernet usecase. These functions reuse the generic pruss_cfg_update() API function. Signed-off-by: Suman Anna Co-developed-by: Grzegorz Jaszczyk Signed-off-by: Grzegorz Jaszczyk Signed-off-by: Puranjay Mohan Signed-off-by: MD Danish Anwar --- drivers/soc/ti/pruss.c | 60 ++++++++++++++++++++++++++++++++ include/linux/remoteproc/pruss.h | 22 ++++++++++++ 2 files changed, 82 insertions(+) diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c index 26d8129b515c..2f04b7922ddb 100644 --- a/drivers/soc/ti/pruss.c +++ b/drivers/soc/ti/pruss.c @@ -203,6 +203,66 @@ static int pruss_cfg_update(struct pruss *pruss, unsigned int reg, return regmap_update_bits(pruss->cfg_regmap, reg, mask, val); } +/** + * pruss_cfg_gpimode() - set the GPI mode of the PRU + * @pruss: the pruss instance handle + * @pru_id: id of the PRU core within the PRUSS + * @mode: GPI mode to set + * + * Sets the GPI mode for a given PRU by programming the + * corresponding PRUSS_CFG_GPCFGx register + * + * Return: 0 on success, or an error code otherwise + */ +int pruss_cfg_gpimode(struct pruss *pruss, enum pruss_pru_id pru_id, + enum pruss_gpi_mode mode) +{ + if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS) + return -EINVAL; + + if (mode < 0 || mode > PRUSS_GPI_MODE_MAX) + return -EINVAL; + + return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id), + PRUSS_GPCFG_PRU_GPI_MODE_MASK, + mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT); +} +EXPORT_SYMBOL_GPL(pruss_cfg_gpimode); + +/** + * pruss_cfg_miirt_enable() - Enable/disable MII RT Events + * @pruss: the pruss instance + * @enable: enable/disable + * + * Enable/disable the MII RT Events for the PRUSS. + * + * Return: 0 on success, or an error code otherwise + */ +int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable) +{ + u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0; + + return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT, + PRUSS_MII_RT_EVENT_EN, set); +} +EXPORT_SYMBOL_GPL(pruss_cfg_miirt_enable); + +/** + * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality + * @pruss: the pruss instance + * @enable: enable/disable + * @mask: Mask for PRU / RTU + * + * Return: 0 on success, or an error code otherwise + */ +int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable, u32 mask) +{ + u32 set = enable ? mask : 0; + + return pruss_cfg_update(pruss, PRUSS_CFG_SPP, mask, set); +} +EXPORT_SYMBOL_GPL(pruss_cfg_xfr_enable); + static void pruss_of_free_clk_provider(void *data) { struct device_node *clk_mux_np = data; diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h index 12ef10b9fe9a..51a3eedd2be6 100644 --- a/include/linux/remoteproc/pruss.h +++ b/include/linux/remoteproc/pruss.h @@ -101,6 +101,7 @@ enum pruss_gpi_mode { PRUSS_GPI_MODE_PARALLEL, PRUSS_GPI_MODE_28BIT_SHIFT, PRUSS_GPI_MODE_MII, + PRUSS_GPI_MODE_MAX, }; /** @@ -165,6 +166,10 @@ int pruss_request_mem_region(struct pruss *pruss, enum pruss_mem mem_id, struct pruss_mem_region *region); int pruss_release_mem_region(struct pruss *pruss, struct pruss_mem_region *region); +int pruss_cfg_gpimode(struct pruss *pruss, enum pruss_pru_id pru_id, + enum pruss_gpi_mode mode); +int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable); +int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable, u32 mask); #else @@ -188,6 +193,23 @@ static inline int pruss_release_mem_region(struct pruss *pruss, return -EOPNOTSUPP; } +static inline int pruss_cfg_gpimode(struct pruss *pruss, + enum pruss_pru_id pru_id, + enum pruss_gpi_mode mode) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable, u32 mask) +{ + return ERR_PTR(-EOPNOTSUPP); +} + #endif /* CONFIG_TI_PRUSS */ #if IS_ENABLED(CONFIG_PRU_REMOTEPROC)