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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2EBB1C61DA4 for ; Wed, 15 Mar 2023 12:08:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=i/+22c/bcDC6SYKdi4QZeqV8T98vUtPfHLTqOCbQ4vU=; b=uIVjl+RrnbuBVX 8d48b2HjrlT3VSIJyJR5m0vmgTyUD0tWYcOgbVU54ZcOfO1tV06Q9LBF6gNRJofc2tzGVJvErje/V TnrWyDIdXmSqinggwJ1TeCsF2H/DCwAzJ28Fl57/i6TMuR87pj4p7OOrxK7CEQ1/G88+Eev/QUpjD wfStNhtH7E32d2txG9XG7JRnQdcXi9/t5x4b95sTZYmxtrVukLgdDEakOKgHhhfMR6GdEZAqMigSV wg4q/PN6sEpBCxAk6eTrq2/YNzKNQwJldI374tPEjivPIy0HgXtZLcwbAF2t/YUXB9vjbQ/mj6TWR mJK1SdGQRilWGjryoxbg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pcPuw-00DIVM-2e; Wed, 15 Mar 2023 12:07:42 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pcPus-00DIU6-1Q for linux-arm-kernel@lists.infradead.org; Wed, 15 Mar 2023 12:07:40 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E8A49B81DF8; Wed, 15 Mar 2023 12:07:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4CEC6C433D2; Wed, 15 Mar 2023 12:07:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1678882054; bh=sgmMmhvI0/Dp036Wgs1Ke6kgrXhU8+5SUe5lgi+/8DQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=kOhvlL35CAXqoue/F//cqZTBdbupgess90uesi0SzcucA8PEEFs17WFmB23hpbz8t aJ5LLChtZcDOZtUlOEgQJE6//7e42C5UovnJpJQ4PvO4F9n8qFUqes+2LBWfamj9lP YzkxopUOMxJEOKnEEKcP+y/DjcMOdyQ912a9V6ML62WjjXvBEOH3zLj39bLzbiDY8y v67ScRVM6LSQeIzsR9/PbgfOWfyCSIsEi5yulvbLg8uDA9w3A/HXOIvLr0VFBTbZQF S+QwbJ9Esokxt58NExYSQF5zlnQHoGcKqzMODj9hsV+y63syqf5mabdpr9Xl8hWC3i LKtecIye54+3A== Message-ID: <91481d4f-2005-7b33-d3be-df09b7d27ef6@kernel.org> Date: Wed, 15 Mar 2023 14:07:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH v4 3/5] soc: ti: pruss: Add pruss_cfg_read()/update() API To: MD Danish Anwar , "Andrew F. Davis" , Suman Anna , Vignesh Raghavendra , Mathieu Poirier , Bjorn Andersson , Santosh Shilimkar , Nishanth Menon Cc: linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, srk@ti.com, devicetree@vger.kernel.org, netdev@vger.kernel.org References: <20230313111127.1229187-1-danishanwar@ti.com> <20230313111127.1229187-4-danishanwar@ti.com> Content-Language: en-US From: Roger Quadros In-Reply-To: <20230313111127.1229187-4-danishanwar@ti.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230315_050738_785949_C0B39137 X-CRM114-Status: GOOD ( 28.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Danish, On 13/03/2023 13:11, 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 | 39 ++++++++++++++ > include/linux/remoteproc/pruss.h | 87 ++++++++++++++++++++++++++++++++ > 2 files changed, 126 insertions(+) > > diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c > index c8053c0d735f..26d8129b515c 100644 > --- a/drivers/soc/ti/pruss.c > +++ b/drivers/soc/ti/pruss.c > @@ -164,6 +164,45 @@ int pruss_release_mem_region(struct pruss *pruss, > } > EXPORT_SYMBOL_GPL(pruss_release_mem_region); > > +/** > + * 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); > +} > + > 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 33f930e0a0ce..12ef10b9fe9a 100644 > --- a/include/linux/remoteproc/pruss.h > +++ b/include/linux/remoteproc/pruss.h > @@ -10,12 +10,99 @@ > #ifndef __LINUX_PRUSS_H > #define __LINUX_PRUSS_H > > +#include > #include > #include > #include > > #define PRU_RPROC_DRVNAME "pru-rproc" > > +/* > + * 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) Can we please move all the above definitions to private driver/soc/ti/pruss.h? You can also add pruss_cfg_read and pruss_cfg_update there. > + > +/* > + * enum pruss_gp_mux_sel - PRUSS GPI/O Mux modes for the > + * PRUSS_GPCFG0/1 registers > + * > + * NOTE: The below defines are the most common values, but there > + * are some exceptions like on 66AK2G, where the RESERVED and MII2 > + * values are interchanged. Also, this bit-field does not exist on > + * AM335x SoCs > + */ > +enum pruss_gp_mux_sel { > + PRUSS_GP_MUX_SEL_GP = 0, > + PRUSS_GP_MUX_SEL_ENDAT, > + PRUSS_GP_MUX_SEL_RESERVED, > + PRUSS_GP_MUX_SEL_SD, > + PRUSS_GP_MUX_SEL_MII2, > + PRUSS_GP_MUX_SEL_MAX, > +}; > + > +/* > + * enum pruss_gpi_mode - PRUSS GPI configuration modes, used > + * to program the PRUSS_GPCFG0/1 registers > + */ > +enum pruss_gpi_mode { > + PRUSS_GPI_MODE_DIRECT = 0, > + PRUSS_GPI_MODE_PARALLEL, > + PRUSS_GPI_MODE_28BIT_SHIFT, > + PRUSS_GPI_MODE_MII, > +}; > + > /** > * enum pruss_pru_id - PRU core identifiers > * @PRUSS_PRU0: PRU Core 0. cheers, -roger _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel