From patchwork Mon Jun 21 22:22:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russ Weight X-Patchwork-Id: 12335845 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A55B9C48BC2 for ; Mon, 21 Jun 2021 22:23:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 835636128E for ; Mon, 21 Jun 2021 22:23:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230438AbhFUWZu (ORCPT ); Mon, 21 Jun 2021 18:25:50 -0400 Received: from mga09.intel.com ([134.134.136.24]:12198 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229789AbhFUWZu (ORCPT ); Mon, 21 Jun 2021 18:25:50 -0400 IronPort-SDR: SOM4wgBmPl6XDGUA8oFKbPO1dXi7lTJeiHsFOTRWoHfFibQsW+jq6dTvowXCfFN6wNokKsSnqU s2YPbl7vL/bA== X-IronPort-AV: E=McAfee;i="6200,9189,10022"; a="206888079" X-IronPort-AV: E=Sophos;i="5.83,290,1616482800"; d="scan'208";a="206888079" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jun 2021 15:23:33 -0700 IronPort-SDR: qXB5YT1RiYxOg6OFS8qgr7VFHRw7QaaAC4hNhjsCxHDxiivjZClRB1tFaoOo7HCrw/vPQD7OOp /doDqo3IPI0Q== X-IronPort-AV: E=Sophos;i="5.83,290,1616482800"; d="scan'208";a="454037082" Received: from rhweight-mobl2.amr.corp.intel.com (HELO rhweight-mobl2.ra.intel.com) ([10.209.72.11]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jun 2021 15:23:31 -0700 From: Russ Weight To: mdf@kernel.org, linux-fpga@vger.kernel.org Cc: trix@redhat.com, lgoncalv@redhat.com, yilun.xu@intel.com, hao.wu@intel.com, matthew.gerlach@intel.com, richard.gong@intel.com, Russ Weight Subject: [PATCH v6 1/3] fpga: mgr: Use standard dev_release for class driver Date: Mon, 21 Jun 2021 15:22:47 -0700 Message-Id: <20210621222249.451387-2-russell.h.weight@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210621222249.451387-1-russell.h.weight@intel.com> References: <20210621222249.451387-1-russell.h.weight@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org The FPGA manager class driver data structure is being treated as a managed resource instead of using standard dev_release call-back to release the class data structure. This change removes the managed resource code for the freeing of the class data structure and combines the create() and register() functions into a single register() function. The devm_fpga_mgr_register() function is retained. Signed-off-by: Russ Weight --- v6: - Moved FPGA manager optional parameters out of the ops structure and back into the FPGA manager structure. - Changed fpga_mgr_register()/devm_fpga_mgr_register() parameters to accept an info data structure to provide flexibility in passing optional parameters. - Added fpga_mgr_register_simple()/devm_fpga_mgr_register_simple() functions to support current parameters for users that don't require the use of optional parameters. v5: - Rebased on top of recently accepted patches. - Removed compat_id from the fpga_mgr_register() parameter list and added it to the fpga_manager_ops structure. This also required dynamically allocating the dfl-fme-ops structure in order to add the appropriate compat_id. v4: - Added the compat_id parameter to fpga_mgr_register() and devm_fpga_mgr_register() to ensure that the compat_id is set before the device_register() call. v3: - Cleaned up comment header for fpga_mgr_register() - Fix error return on ida_simple_get() failure v2: - Restored devm_fpga_mgr_register() functionality, adapted for the combined create/register functionality. - All previous callers of devm_fpga_mgr_register() will continue to call devm_fpga_mgr_register(). - replaced unnecessary ternary operators in return statements with standard if conditions. --- drivers/fpga/altera-cvp.c | 12 +- drivers/fpga/altera-pr-ip-core.c | 9 +- drivers/fpga/altera-ps-spi.c | 10 +- drivers/fpga/dfl-fme-mgr.c | 23 ++-- drivers/fpga/fpga-mgr.c | 212 +++++++++++++------------------ drivers/fpga/ice40-spi.c | 10 +- drivers/fpga/machxo2-spi.c | 11 +- drivers/fpga/socfpga-a10.c | 16 +-- drivers/fpga/socfpga.c | 10 +- drivers/fpga/stratix10-soc.c | 16 +-- drivers/fpga/ts73xx-fpga.c | 10 +- drivers/fpga/xilinx-spi.c | 12 +- drivers/fpga/zynq-fpga.c | 16 +-- drivers/fpga/zynqmp-fpga.c | 10 +- include/linux/fpga/fpga-mgr.h | 62 ++++++--- 15 files changed, 204 insertions(+), 235 deletions(-) diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c index ccf4546eff29..ddf2ffe3f138 100644 --- a/drivers/fpga/altera-cvp.c +++ b/drivers/fpga/altera-cvp.c @@ -652,19 +652,15 @@ static int altera_cvp_probe(struct pci_dev *pdev, snprintf(conf->mgr_name, sizeof(conf->mgr_name), "%s @%s", ALTERA_CVP_MGR_NAME, pci_name(pdev)); - mgr = devm_fpga_mgr_create(&pdev->dev, conf->mgr_name, - &altera_cvp_ops, conf); - if (!mgr) { - ret = -ENOMEM; + mgr = fpga_mgr_register_simple(&pdev->dev, conf->mgr_name, + &altera_cvp_ops, conf); + if (IS_ERR(mgr)) { + ret = PTR_ERR(mgr); goto err_unmap; } pci_set_drvdata(pdev, mgr); - ret = fpga_mgr_register(mgr); - if (ret) - goto err_unmap; - return 0; err_unmap: diff --git a/drivers/fpga/altera-pr-ip-core.c b/drivers/fpga/altera-pr-ip-core.c index dfdf21ed34c4..fa3e2697d285 100644 --- a/drivers/fpga/altera-pr-ip-core.c +++ b/drivers/fpga/altera-pr-ip-core.c @@ -191,11 +191,12 @@ int alt_pr_register(struct device *dev, void __iomem *reg_base) (val & ALT_PR_CSR_STATUS_MSK) >> ALT_PR_CSR_STATUS_SFT, (int)(val & ALT_PR_CSR_PR_START)); - mgr = devm_fpga_mgr_create(dev, dev_name(dev), &alt_pr_ops, priv); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(dev, dev_name(dev), + &alt_pr_ops, priv); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(dev, mgr); + return 0; } EXPORT_SYMBOL_GPL(alt_pr_register); diff --git a/drivers/fpga/altera-ps-spi.c b/drivers/fpga/altera-ps-spi.c index 23bfd4d1ad0f..990689cf8d67 100644 --- a/drivers/fpga/altera-ps-spi.c +++ b/drivers/fpga/altera-ps-spi.c @@ -302,12 +302,12 @@ static int altera_ps_probe(struct spi_device *spi) snprintf(conf->mgr_name, sizeof(conf->mgr_name), "%s %s", dev_driver_string(&spi->dev), dev_name(&spi->dev)); - mgr = devm_fpga_mgr_create(&spi->dev, conf->mgr_name, - &altera_ps_ops, conf); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(&spi->dev, conf->mgr_name, + &altera_ps_ops, conf); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(&spi->dev, mgr); + return 0; } static const struct spi_device_id altera_ps_spi_ids[] = { diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c index d5861d13b306..36add746ac42 100644 --- a/drivers/fpga/dfl-fme-mgr.c +++ b/drivers/fpga/dfl-fme-mgr.c @@ -282,7 +282,7 @@ static void fme_mgr_get_compat_id(void __iomem *fme_pr, static int fme_mgr_probe(struct platform_device *pdev) { struct dfl_fme_mgr_pdata *pdata = dev_get_platdata(&pdev->dev); - struct fpga_compat_id *compat_id; + struct fpga_manager_info info = { 0 }; struct device *dev = &pdev->dev; struct fme_mgr_priv *priv; struct fpga_manager *mgr; @@ -302,20 +302,19 @@ static int fme_mgr_probe(struct platform_device *pdev) return PTR_ERR(priv->ioaddr); } - compat_id = devm_kzalloc(dev, sizeof(*compat_id), GFP_KERNEL); - if (!compat_id) + info.name = "DFL FME FPGA Manager"; + info.mops = &fme_mgr_ops; + info.priv = priv; + info.compat_id = devm_kzalloc(dev, sizeof(*info.compat_id), GFP_KERNEL); + if (!info.compat_id) return -ENOMEM; - fme_mgr_get_compat_id(priv->ioaddr, compat_id); + fme_mgr_get_compat_id(priv->ioaddr, info.compat_id); + mgr = devm_fpga_mgr_register(dev, &info); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - mgr = devm_fpga_mgr_create(dev, "DFL FME FPGA Manager", - &fme_mgr_ops, priv); - if (!mgr) - return -ENOMEM; - - mgr->compat_id = compat_id; - - return devm_fpga_mgr_register(dev, mgr); + return 0; } static struct platform_driver fme_mgr_driver = { diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index ecb4c3c795fa..fa2f1a95de82 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -550,21 +550,19 @@ void fpga_mgr_unlock(struct fpga_manager *mgr) EXPORT_SYMBOL_GPL(fpga_mgr_unlock); /** - * fpga_mgr_create - create and initialize an FPGA manager struct + * fpga_mgr_register - create and register an FPGA Manager device * @parent: fpga manager device from pdev - * @name: fpga manager name - * @mops: pointer to structure of fpga manager ops - * @priv: fpga manager private data + * @info: parameters for fpga manager * - * The caller of this function is responsible for freeing the struct with - * fpga_mgr_free(). Using devm_fpga_mgr_create() instead is recommended. + * The caller of this function is responsible for calling fpga_mgr_unregister(). + * Using devm_fpga_mgr_register instead is recommended. * - * Return: pointer to struct fpga_manager or NULL + * Return: pointer to struct fpga_manager pointer or ERR_PTR() */ -struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, - const struct fpga_manager_ops *mops, - void *priv) +struct fpga_manager * +fpga_mgr_register(struct device *parent, struct fpga_manager_info *info) { + const struct fpga_manager_ops *mops = info->mops; struct fpga_manager *mgr; int id, ret; @@ -572,29 +570,31 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, !mops->write_init || (!mops->write && !mops->write_sg) || (mops->write && mops->write_sg)) { dev_err(parent, "Attempt to register without fpga_manager_ops\n"); - return NULL; + return ERR_PTR(-EINVAL); } - if (!name || !strlen(name)) { + if (!info->name || !strlen(info->name)) { dev_err(parent, "Attempt to register with no name!\n"); - return NULL; + return ERR_PTR(-EINVAL); } mgr = kzalloc(sizeof(*mgr), GFP_KERNEL); if (!mgr) - return NULL; + return ERR_PTR(-ENOMEM); id = ida_simple_get(&fpga_mgr_ida, 0, 0, GFP_KERNEL); - if (id < 0) + if (id < 0) { + ret = id; goto error_kfree; + } mutex_init(&mgr->ref_mutex); - mgr->name = name; - mgr->mops = mops; - mgr->priv = priv; + mgr->name = info->name; + mgr->mops = info->mops; + mgr->priv = info->priv; + mgr->compat_id = info->compat_id; - device_initialize(&mgr->dev); mgr->dev.class = fpga_mgr_class; mgr->dev.groups = mops->groups; mgr->dev.parent = parent; @@ -605,6 +605,19 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, if (ret) goto error_device; + /* + * Initialize framework state by requesting low level driver read state + * from device. FPGA may be in reset mode or may have been programmed + * by bootloader or EEPROM. + */ + mgr->state = mgr->mops->state(mgr); + + ret = device_register(&mgr->dev); + if (ret) { + put_device(&mgr->dev); + return ERR_PTR(ret); + } + return mgr; error_device: @@ -612,98 +625,38 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, error_kfree: kfree(mgr); - return NULL; -} -EXPORT_SYMBOL_GPL(fpga_mgr_create); - -/** - * fpga_mgr_free - free an FPGA manager created with fpga_mgr_create() - * @mgr: fpga manager struct - */ -void fpga_mgr_free(struct fpga_manager *mgr) -{ - ida_simple_remove(&fpga_mgr_ida, mgr->dev.id); - kfree(mgr); -} -EXPORT_SYMBOL_GPL(fpga_mgr_free); - -static void devm_fpga_mgr_release(struct device *dev, void *res) -{ - struct fpga_mgr_devres *dr = res; - - fpga_mgr_free(dr->mgr); + return ERR_PTR(ret); } +EXPORT_SYMBOL_GPL(fpga_mgr_register); /** - * devm_fpga_mgr_create - create and initialize a managed FPGA manager struct + * fpga_mgr_register_simple - create and register an FPGA Manager device * @parent: fpga manager device from pdev * @name: fpga manager name * @mops: pointer to structure of fpga manager ops * @priv: fpga manager private data * - * This function is intended for use in an FPGA manager driver's probe function. - * After the manager driver creates the manager struct with - * devm_fpga_mgr_create(), it should register it with fpga_mgr_register(). The - * manager driver's remove function should call fpga_mgr_unregister(). The - * manager struct allocated with this function will be freed automatically on - * driver detach. This includes the case of a probe function returning error - * before calling fpga_mgr_register(), the struct will still get cleaned up. - * - * Return: pointer to struct fpga_manager or NULL - */ -struct fpga_manager *devm_fpga_mgr_create(struct device *parent, const char *name, - const struct fpga_manager_ops *mops, - void *priv) -{ - struct fpga_mgr_devres *dr; - - dr = devres_alloc(devm_fpga_mgr_release, sizeof(*dr), GFP_KERNEL); - if (!dr) - return NULL; - - dr->mgr = fpga_mgr_create(parent, name, mops, priv); - if (!dr->mgr) { - devres_free(dr); - return NULL; - } - - devres_add(parent, dr); - - return dr->mgr; -} -EXPORT_SYMBOL_GPL(devm_fpga_mgr_create); - -/** - * fpga_mgr_register - register an FPGA manager - * @mgr: fpga manager struct + * The caller of this function is responsible for calling fpga_mgr_unregister(). + * Using devm_fpga_mgr_register_simple instead is recommended. This simple + * version of the register function should be sufficient for most users. The + * fpga_mgr_register function is available for users that need to pass + * additional, optional parameters. * - * Return: 0 on success, negative error code otherwise. + * Return: pointer to struct fpga_manager pointer or ERR_PTR() */ -int fpga_mgr_register(struct fpga_manager *mgr) +struct fpga_manager * +fpga_mgr_register_simple(struct device *parent, const char *name, + const struct fpga_manager_ops *mops, void *priv) { - int ret; + struct fpga_manager_info info = { 0 }; - /* - * Initialize framework state by requesting low level driver read state - * from device. FPGA may be in reset mode or may have been programmed - * by bootloader or EEPROM. - */ - mgr->state = mgr->mops->state(mgr); + info.name = name; + info.mops = mops; + info.priv = priv; - ret = device_add(&mgr->dev); - if (ret) - goto error_device; - - dev_info(&mgr->dev, "%s registered\n", mgr->name); - - return 0; - -error_device: - ida_simple_remove(&fpga_mgr_ida, mgr->dev.id); - - return ret; + return fpga_mgr_register(parent, &info); } -EXPORT_SYMBOL_GPL(fpga_mgr_register); +EXPORT_SYMBOL_GPL(fpga_mgr_register_simple); /** * fpga_mgr_unregister - unregister an FPGA manager @@ -726,14 +679,6 @@ void fpga_mgr_unregister(struct fpga_manager *mgr) } EXPORT_SYMBOL_GPL(fpga_mgr_unregister); -static int fpga_mgr_devres_match(struct device *dev, void *res, - void *match_data) -{ - struct fpga_mgr_devres *dr = res; - - return match_data == dr->mgr; -} - static void devm_fpga_mgr_unregister(struct device *dev, void *res) { struct fpga_mgr_devres *dr = res; @@ -743,44 +688,67 @@ static void devm_fpga_mgr_unregister(struct device *dev, void *res) /** * devm_fpga_mgr_register - resource managed variant of fpga_mgr_register() - * @dev: managing device for this FPGA manager - * @mgr: fpga manager struct + * @parent: fpga manager device from pdev + * @info: parameters for fpga manager * * This is the devres variant of fpga_mgr_register() for which the unregister * function will be called automatically when the managing device is detached. */ -int devm_fpga_mgr_register(struct device *dev, struct fpga_manager *mgr) +struct fpga_manager * +devm_fpga_mgr_register(struct device *dev, struct fpga_manager_info *info) { struct fpga_mgr_devres *dr; - int ret; - - /* - * Make sure that the struct fpga_manager * that is passed in is - * managed itself. - */ - if (WARN_ON(!devres_find(dev, devm_fpga_mgr_release, - fpga_mgr_devres_match, mgr))) - return -EINVAL; + struct fpga_manager *mgr; dr = devres_alloc(devm_fpga_mgr_unregister, sizeof(*dr), GFP_KERNEL); if (!dr) - return -ENOMEM; + return ERR_PTR(-ENOMEM); - ret = fpga_mgr_register(mgr); - if (ret) { + mgr = fpga_mgr_register(dev, info); + if (IS_ERR(mgr)) { devres_free(dr); - return ret; + return mgr; } dr->mgr = mgr; devres_add(dev, dr); - return 0; + return mgr; } EXPORT_SYMBOL_GPL(devm_fpga_mgr_register); +/** + * devm_fpga_mgr_register_simple - resource managed variant of + * fpga_mgr_register_simple() + * @dev: fpga manager device from pdev + * @name: fpga manager name + * @mops: pointer to structure of fpga manager ops + * @priv: fpga manager private data + * + * This is the devres variant of fpga_mgr_register_simple() for which the + * unregister function will be called automatically when the managing + * device is detached. + */ +struct fpga_manager * +devm_fpga_mgr_register_simple(struct device *parent, const char *name, + const struct fpga_manager_ops *mops, void *priv) +{ + struct fpga_manager_info info = { 0 }; + + info.name = name; + info.mops = mops; + info.priv = priv; + + return devm_fpga_mgr_register(parent, &info); +} +EXPORT_SYMBOL_GPL(devm_fpga_mgr_register_simple); + static void fpga_mgr_dev_release(struct device *dev) { + struct fpga_manager *mgr = to_fpga_manager(dev); + + ida_simple_remove(&fpga_mgr_ida, mgr->dev.id); + kfree(mgr); } static int __init fpga_mgr_class_init(void) diff --git a/drivers/fpga/ice40-spi.c b/drivers/fpga/ice40-spi.c index 69dec5af23c3..498f05cf425d 100644 --- a/drivers/fpga/ice40-spi.c +++ b/drivers/fpga/ice40-spi.c @@ -178,12 +178,12 @@ static int ice40_fpga_probe(struct spi_device *spi) return ret; } - mgr = devm_fpga_mgr_create(dev, "Lattice iCE40 FPGA Manager", - &ice40_fpga_ops, priv); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(dev, "Lattice iCE40 FPGA Manager", + &ice40_fpga_ops, priv); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(dev, mgr); + return 0; } static const struct of_device_id ice40_fpga_of_match[] = { diff --git a/drivers/fpga/machxo2-spi.c b/drivers/fpga/machxo2-spi.c index 114a64d2b7a4..f0a15b724b87 100644 --- a/drivers/fpga/machxo2-spi.c +++ b/drivers/fpga/machxo2-spi.c @@ -366,12 +366,13 @@ static int machxo2_spi_probe(struct spi_device *spi) return -EINVAL; } - mgr = devm_fpga_mgr_create(dev, "Lattice MachXO2 SPI FPGA Manager", - &machxo2_ops, spi); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(dev, + "Lattice MachXO2 SPI FPGA Manager", + &machxo2_ops, spi); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(dev, mgr); + return 0; } static const struct of_device_id of_match[] = { diff --git a/drivers/fpga/socfpga-a10.c b/drivers/fpga/socfpga-a10.c index 573d88bdf730..5ffefaa3eb07 100644 --- a/drivers/fpga/socfpga-a10.c +++ b/drivers/fpga/socfpga-a10.c @@ -508,19 +508,15 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev) return -EBUSY; } - mgr = devm_fpga_mgr_create(dev, "SoCFPGA Arria10 FPGA Manager", - &socfpga_a10_fpga_mgr_ops, priv); - if (!mgr) - return -ENOMEM; - - platform_set_drvdata(pdev, mgr); - - ret = fpga_mgr_register(mgr); - if (ret) { + mgr = fpga_mgr_register_simple(dev, "SoCFPGA Arria10 FPGA Manager", + &socfpga_a10_fpga_mgr_ops, priv); + if (IS_ERR(mgr)) { clk_disable_unprepare(priv->clk); - return ret; + return PTR_ERR(mgr); } + platform_set_drvdata(pdev, mgr); + return 0; } diff --git a/drivers/fpga/socfpga.c b/drivers/fpga/socfpga.c index 1f467173fc1f..9b4ca0ad7466 100644 --- a/drivers/fpga/socfpga.c +++ b/drivers/fpga/socfpga.c @@ -571,12 +571,12 @@ static int socfpga_fpga_probe(struct platform_device *pdev) if (ret) return ret; - mgr = devm_fpga_mgr_create(dev, "Altera SOCFPGA FPGA Manager", - &socfpga_fpga_ops, priv); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(dev, "Altera SOCFPGA FPGA Manager", + &socfpga_fpga_ops, priv); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(dev, mgr); + return 0; } #ifdef CONFIG_OF diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c index a2cea500f7cc..fb84d88d4ce9 100644 --- a/drivers/fpga/stratix10-soc.c +++ b/drivers/fpga/stratix10-soc.c @@ -425,18 +425,11 @@ static int s10_probe(struct platform_device *pdev) init_completion(&priv->status_return_completion); - mgr = fpga_mgr_create(dev, "Stratix10 SOC FPGA Manager", - &s10_ops, priv); - if (!mgr) { - dev_err(dev, "unable to create FPGA manager\n"); - ret = -ENOMEM; - goto probe_err; - } - - ret = fpga_mgr_register(mgr); - if (ret) { + mgr = fpga_mgr_register_simple(dev, "Stratix10 SOC FPGA Manager", + &s10_ops, priv); + if (IS_ERR(mgr)) { dev_err(dev, "unable to register FPGA manager\n"); - fpga_mgr_free(mgr); + ret = PTR_ERR(mgr); goto probe_err; } @@ -454,7 +447,6 @@ static int s10_remove(struct platform_device *pdev) struct s10_priv *priv = mgr->priv; fpga_mgr_unregister(mgr); - fpga_mgr_free(mgr); stratix10_svc_free_channel(priv->chan); return 0; diff --git a/drivers/fpga/ts73xx-fpga.c b/drivers/fpga/ts73xx-fpga.c index 101f016c6ed8..2e11eea095ce 100644 --- a/drivers/fpga/ts73xx-fpga.c +++ b/drivers/fpga/ts73xx-fpga.c @@ -122,12 +122,12 @@ static int ts73xx_fpga_probe(struct platform_device *pdev) if (IS_ERR(priv->io_base)) return PTR_ERR(priv->io_base); - mgr = devm_fpga_mgr_create(kdev, "TS-73xx FPGA Manager", - &ts73xx_fpga_ops, priv); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(kdev, "TS-73xx FPGA Manager", + &ts73xx_fpga_ops, priv); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(kdev, mgr); + return 0; } static struct platform_driver ts73xx_fpga_driver = { diff --git a/drivers/fpga/xilinx-spi.c b/drivers/fpga/xilinx-spi.c index fee4d0abf6bf..e78b82f9db79 100644 --- a/drivers/fpga/xilinx-spi.c +++ b/drivers/fpga/xilinx-spi.c @@ -247,13 +247,13 @@ static int xilinx_spi_probe(struct spi_device *spi) return dev_err_probe(&spi->dev, PTR_ERR(conf->done), "Failed to get DONE gpio\n"); - mgr = devm_fpga_mgr_create(&spi->dev, - "Xilinx Slave Serial FPGA Manager", - &xilinx_spi_ops, conf); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(&spi->dev, + "Xilinx Slave Serial FPGA Manager", + &xilinx_spi_ops, conf); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(&spi->dev, mgr); + return 0; } static const struct of_device_id xlnx_spi_of_match[] = { diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c index 9b75bd4f93d8..a3de365aadc6 100644 --- a/drivers/fpga/zynq-fpga.c +++ b/drivers/fpga/zynq-fpga.c @@ -609,20 +609,16 @@ static int zynq_fpga_probe(struct platform_device *pdev) clk_disable(priv->clk); - mgr = devm_fpga_mgr_create(dev, "Xilinx Zynq FPGA Manager", - &zynq_fpga_ops, priv); - if (!mgr) - return -ENOMEM; - - platform_set_drvdata(pdev, mgr); - - err = fpga_mgr_register(mgr); - if (err) { + mgr = fpga_mgr_register_simple(dev, "Xilinx Zynq FPGA Manager", + &zynq_fpga_ops, priv); + if (IS_ERR(mgr)) { dev_err(dev, "unable to register FPGA manager\n"); clk_unprepare(priv->clk); - return err; + return PTR_ERR(mgr); } + platform_set_drvdata(pdev, mgr); + return 0; } diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c index 125743c9797f..d743a05cba95 100644 --- a/drivers/fpga/zynqmp-fpga.c +++ b/drivers/fpga/zynqmp-fpga.c @@ -102,12 +102,12 @@ static int zynqmp_fpga_probe(struct platform_device *pdev) priv->dev = dev; - mgr = devm_fpga_mgr_create(dev, "Xilinx ZynqMP FPGA Manager", - &zynqmp_fpga_ops, priv); - if (!mgr) - return -ENOMEM; + mgr = devm_fpga_mgr_register_simple(dev, "Xilinx ZynqMP FPGA Manager", + &zynqmp_fpga_ops, priv); + if (IS_ERR(mgr)) + return PTR_ERR(mgr); - return devm_fpga_mgr_register(dev, mgr); + return 0; } static const struct of_device_id zynqmp_fpga_of_match[] = { diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h index 474c1f506307..a814407bc588 100644 --- a/include/linux/fpga/fpga-mgr.h +++ b/include/linux/fpga/fpga-mgr.h @@ -105,6 +105,36 @@ struct fpga_image_info { #endif }; +/** + * struct fpga_compat_id - id for compatibility check + * + * @id_h: high 64bit of the compat_id + * @id_l: low 64bit of the compat_id + */ +struct fpga_compat_id { + u64 id_h; + u64 id_l; +}; + +/** + * struct fpga_manager_info - collection of parameters for an FPGA Manager + * @name: fpga manager name + * @compat_id: FPGA manager id for compatibility check. + * @mops: pointer to structure of fpga manager ops + * @priv: fpga manager private data + * + * fpga_manager_info contains parameters for the register function. These + * are separated into an info structure because they some are optional + * others could be added to in the future. The info structure facilitates + * maintaining a stable API. + */ +struct fpga_manager_info { + const char *name; + struct fpga_compat_id *compat_id; + const struct fpga_manager_ops *mops; + void *priv; +}; + /** * struct fpga_manager_ops - ops for low level fpga manager drivers * @initial_header_size: Maximum number of bytes that should be passed into write_init @@ -143,17 +173,6 @@ struct fpga_manager_ops { #define FPGA_MGR_STATUS_IP_PROTOCOL_ERR BIT(3) #define FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR BIT(4) -/** - * struct fpga_compat_id - id for compatibility check - * - * @id_h: high 64bit of the compat_id - * @id_l: low 64bit of the compat_id - */ -struct fpga_compat_id { - u64 id_h; - u64 id_l; -}; - /** * struct fpga_manager - fpga manager structure * @name: name of low level fpga manager @@ -191,17 +210,18 @@ struct fpga_manager *fpga_mgr_get(struct device *dev); void fpga_mgr_put(struct fpga_manager *mgr); -struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name, - const struct fpga_manager_ops *mops, - void *priv); -void fpga_mgr_free(struct fpga_manager *mgr); -int fpga_mgr_register(struct fpga_manager *mgr); -void fpga_mgr_unregister(struct fpga_manager *mgr); +struct fpga_manager * +fpga_mgr_register(struct device *dev, struct fpga_manager_info *info); -int devm_fpga_mgr_register(struct device *dev, struct fpga_manager *mgr); +struct fpga_manager * +fpga_mgr_register_simple(struct device *dev, const char *name, + const struct fpga_manager_ops *mops, void *priv); +void fpga_mgr_unregister(struct fpga_manager *mgr); -struct fpga_manager *devm_fpga_mgr_create(struct device *dev, const char *name, - const struct fpga_manager_ops *mops, - void *priv); +struct fpga_manager * +devm_fpga_mgr_register(struct device *dev, struct fpga_manager_info *info); +struct fpga_manager * +devm_fpga_mgr_register_simple(struct device *dev, const char *name, + const struct fpga_manager_ops *mops, void *priv); #endif /*_LINUX_FPGA_MGR_H */