From mboxrd@z Thu Jan 1 00:00:00 1970 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 BB20BC77B61 for ; Tue, 28 Mar 2023 11:17:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232556AbjC1LRk (ORCPT ); Tue, 28 Mar 2023 07:17:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230226AbjC1LRc (ORCPT ); Tue, 28 Mar 2023 07:17:32 -0400 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5FE163C20; Tue, 28 Mar 2023 04:17:30 -0700 (PDT) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 32SBH9xG108436; Tue, 28 Mar 2023 06:17:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1680002229; bh=+eoEEe1pmtcdoeNbEZvPGDZU834mlTMCt5fDZ1sH9SQ=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=oGGoOHR38rHg1qUDXzXDofSvKLb4TCXoaDSwBXKvJqcFbaP2AZ6akfsbz4hZS1jMX gRZ2Lj6Q7nNSA5gYVyHRgID/tmEGDY3kWCwgqo00dzrluSkMJ5DiWymlEqvP6zgs/w kH1Zrq6uXL86JfNBFkHgQECIpJRLoclkvPnEX+iU= Received: from DFLE105.ent.ti.com (dfle105.ent.ti.com [10.64.6.26]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 32SBH9M6037561 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 28 Mar 2023 06:17:09 -0500 Received: from DFLE105.ent.ti.com (10.64.6.26) by DFLE105.ent.ti.com (10.64.6.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Tue, 28 Mar 2023 06:17:09 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE105.ent.ti.com (10.64.6.26) 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; Tue, 28 Mar 2023 06:17:09 -0500 Received: from [10.24.69.114] (ileaxei01-snat2.itg.ti.com [10.180.69.6]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 32SBH4Wp095866; Tue, 28 Mar 2023 06:17:04 -0500 Message-ID: Date: Tue, 28 Mar 2023 16:47:03 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [EXTERNAL] Re: [PATCH v5 3/5] soc: ti: pruss: Add pruss_cfg_read()/update() API Content-Language: en-US To: Mathieu Poirier , MD Danish Anwar CC: "Andrew F. Davis" , Suman Anna , Roger Quadros , Vignesh Raghavendra , Tero Kristo , Bjorn Andersson , Santosh Shilimkar , Nishanth Menon , , , , , , , References: <20230323062451.2925996-1-danishanwar@ti.com> <20230323062451.2925996-4-danishanwar@ti.com> <20230327210126.GC3158115@p14s> From: Md Danish Anwar Organization: Texas Instruments In-Reply-To: <20230327210126.GC3158115@p14s> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28/03/23 02:31, Mathieu Poirier wrote: > On Thu, Mar 23, 2023 at 11:54:49AM +0530, MD Danish Anwar wrote: >> From: Suman Anna >> >> Add two new generic API pruss_cfg_read() and pruss_cfg_update() to >> the PRUSS platform driver to read and program respectively a register >> within the PRUSS CFG sub-module represented by a syscon driver. >> >> These APIs are internal to PRUSS driver. Various useful registers >> and macros for certain register bit-fields and their values have also >> been added. >> >> 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 | 1 + >> drivers/soc/ti/pruss.h | 112 +++++++++++++++++++++++++++++++++++++++++ >> 2 files changed, 113 insertions(+) >> create mode 100644 drivers/soc/ti/pruss.h >> > > This patch doesn't compile without warnings. > Sure, Mathieu. I'll check the warnings. >> diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c >> index 126b672b9b30..2fa7df667592 100644 >> --- a/drivers/soc/ti/pruss.c >> +++ b/drivers/soc/ti/pruss.c >> @@ -21,6 +21,7 @@ >> #include >> #include >> #include >> +#include "pruss.h" >> >> /** >> * struct pruss_private_data - PRUSS driver private data >> diff --git a/drivers/soc/ti/pruss.h b/drivers/soc/ti/pruss.h >> new file mode 100644 >> index 000000000000..4626d5f6b874 >> --- /dev/null >> +++ b/drivers/soc/ti/pruss.h >> @@ -0,0 +1,112 @@ >> +/* SPDX-License-Identifier: GPL-2.0-only */ >> +/* >> + * PRU-ICSS Subsystem user interfaces >> + * >> + * Copyright (C) 2015-2023 Texas Instruments Incorporated - http://www.ti.com >> + * MD Danish Anwar >> + */ >> + >> +#ifndef _SOC_TI_PRUSS_H_ >> +#define _SOC_TI_PRUSS_H_ >> + >> +#include >> +#include >> + >> +/* >> + * PRU_ICSS_CFG registers >> + * SYSCFG, ISRP, ISP, IESP, IECP, SCRP applicable on AMxxxx devices only >> + */ >> +#define PRUSS_CFG_REVID 0x00 >> +#define PRUSS_CFG_SYSCFG 0x04 >> +#define PRUSS_CFG_GPCFG(x) (0x08 + (x) * 4) >> +#define PRUSS_CFG_CGR 0x10 >> +#define PRUSS_CFG_ISRP 0x14 >> +#define PRUSS_CFG_ISP 0x18 >> +#define PRUSS_CFG_IESP 0x1C >> +#define PRUSS_CFG_IECP 0x20 >> +#define PRUSS_CFG_SCRP 0x24 >> +#define PRUSS_CFG_PMAO 0x28 >> +#define PRUSS_CFG_MII_RT 0x2C >> +#define PRUSS_CFG_IEPCLK 0x30 >> +#define PRUSS_CFG_SPP 0x34 >> +#define PRUSS_CFG_PIN_MX 0x40 >> + >> +/* PRUSS_GPCFG register bits */ >> +#define PRUSS_GPCFG_PRU_GPO_SH_SEL BIT(25) >> + >> +#define PRUSS_GPCFG_PRU_DIV1_SHIFT 20 >> +#define PRUSS_GPCFG_PRU_DIV1_MASK GENMASK(24, 20) >> + >> +#define PRUSS_GPCFG_PRU_DIV0_SHIFT 15 >> +#define PRUSS_GPCFG_PRU_DIV0_MASK GENMASK(15, 19) >> + >> +#define PRUSS_GPCFG_PRU_GPO_MODE BIT(14) >> +#define PRUSS_GPCFG_PRU_GPO_MODE_DIRECT 0 >> +#define PRUSS_GPCFG_PRU_GPO_MODE_SERIAL BIT(14) >> + >> +#define PRUSS_GPCFG_PRU_GPI_SB BIT(13) >> + >> +#define PRUSS_GPCFG_PRU_GPI_DIV1_SHIFT 8 >> +#define PRUSS_GPCFG_PRU_GPI_DIV1_MASK GENMASK(12, 8) >> + >> +#define PRUSS_GPCFG_PRU_GPI_DIV0_SHIFT 3 >> +#define PRUSS_GPCFG_PRU_GPI_DIV0_MASK GENMASK(7, 3) >> + >> +#define PRUSS_GPCFG_PRU_GPI_CLK_MODE_POSITIVE 0 >> +#define PRUSS_GPCFG_PRU_GPI_CLK_MODE_NEGATIVE BIT(2) >> +#define PRUSS_GPCFG_PRU_GPI_CLK_MODE BIT(2) >> + >> +#define PRUSS_GPCFG_PRU_GPI_MODE_MASK GENMASK(1, 0) >> +#define PRUSS_GPCFG_PRU_GPI_MODE_SHIFT 0 >> + >> +#define PRUSS_GPCFG_PRU_MUX_SEL_SHIFT 26 >> +#define PRUSS_GPCFG_PRU_MUX_SEL_MASK GENMASK(29, 26) >> + >> +/* PRUSS_MII_RT register bits */ >> +#define PRUSS_MII_RT_EVENT_EN BIT(0) >> + >> +/* PRUSS_SPP register bits */ >> +#define PRUSS_SPP_XFER_SHIFT_EN BIT(1) >> +#define PRUSS_SPP_PRU1_PAD_HP_EN BIT(0) >> +#define PRUSS_SPP_RTU_XFR_SHIFT_EN BIT(3) >> + >> +/** >> + * pruss_cfg_read() - read a PRUSS CFG sub-module register >> + * @pruss: the pruss instance handle >> + * @reg: register offset within the CFG sub-module >> + * @val: pointer to return the value in >> + * >> + * Reads a given register within the PRUSS CFG sub-module and >> + * returns it through the passed-in @val pointer >> + * >> + * Return: 0 on success, or an error code otherwise >> + */ >> +static int pruss_cfg_read(struct pruss *pruss, unsigned int reg, unsigned int *val) >> +{ >> + if (IS_ERR_OR_NULL(pruss)) >> + return -EINVAL; >> + >> + return regmap_read(pruss->cfg_regmap, reg, val); >> +} >> + >> +/** >> + * pruss_cfg_update() - configure a PRUSS CFG sub-module register >> + * @pruss: the pruss instance handle >> + * @reg: register offset within the CFG sub-module >> + * @mask: bit mask to use for programming the @val >> + * @val: value to write >> + * >> + * Programs a given register within the PRUSS CFG sub-module >> + * >> + * Return: 0 on success, or an error code otherwise >> + */ >> +static int pruss_cfg_update(struct pruss *pruss, unsigned int reg, >> + unsigned int mask, unsigned int val) >> +{ >> + if (IS_ERR_OR_NULL(pruss)) >> + return -EINVAL; >> + >> + return regmap_update_bits(pruss->cfg_regmap, reg, mask, val); >> +} >> + >> +#endif /* _SOC_TI_PRUSS_H_ */ >> -- >> 2.25.1 >> -- Thanks and Regards, Danish.