From patchwork Thu Sep 29 14:32:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hal Feng X-Patchwork-Id: 611632 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 A75B6C43217 for ; Thu, 29 Sep 2022 14:38:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235656AbiI2OiG (ORCPT ); Thu, 29 Sep 2022 10:38:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235556AbiI2OiF (ORCPT ); Thu, 29 Sep 2022 10:38:05 -0400 X-Greylist: delayed 295 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 29 Sep 2022 07:38:02 PDT Received: from smtpbguseast2.qq.com (smtpbguseast2.qq.com [54.204.34.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 876391BF0C1; Thu, 29 Sep 2022 07:38:01 -0700 (PDT) X-QQ-mid: bizesmtp84t1664461971t2352kc1 Received: from localhost.localdomain ( [113.72.145.157]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 29 Sep 2022 22:32:49 +0800 (CST) X-QQ-SSF: 01000000002000201000B00A0000000 X-QQ-FEAT: SFhf6fKhx/8oAqA+xXX7FIVEvIELHkN73OBy0+rHEEM2lFkxEFVw5OIBn4NmG 2zDsWQpDLqeK++KqYzu5fbIviEMo2hnt3AAY5wVHQHp1Ezfci+CFIB8IDyJWeb8lGNJ9YSF D1UEr6wFRaF0VxgMrprepY9D14HFi92e8vcfjNOdEYqSQqF4yriv5Y6PEzn+zYi81LAu2D/ zmdbOxlZRFTddhT4YHMmWL2qg/IL6x9MwR5eHKO4dxr1VrOO9r/nlzkfQnbfw//xfjs0Bao sfgCDyELD2lB7rZyYQkD6BxklUKOsR2zGf9SznLGPfzgidGCV5U7Pax+rBuWV1smgq6JvRH Gmns7JGqiXyZydixwie0nY3I/u3MnKdYSAi1tcl+lkx4mpPogqxHbJGJwrfu5NubOu0PXrU ouW/Js4BAA+Ew/vQDQNfr3AihJ8ZUEUG X-QQ-GoodBg: 0 From: Hal Feng To: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org Cc: Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Daniel Lezcano , Thomas Gleixner , Marc Zyngier , Philipp Zabel , Stephen Boyd , Michael Turquette , Linus Walleij , Emil Renner Berthing , Hal Feng , linux-kernel@vger.kernel.org Subject: [PATCH v1 05/30] soc: sifive: l2 cache: Convert to platform driver Date: Thu, 29 Sep 2022 22:32:00 +0800 Message-Id: <20220929143225.17907-6-hal.feng@linux.starfivetech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220929143225.17907-1-hal.feng@linux.starfivetech.com> References: <20220929143225.17907-1-hal.feng@linux.starfivetech.com> X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:linux.starfivetech.com:qybglogicsvr:qybglogicsvr2 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Emil Renner Berthing This converts the driver to use the builtin_platform_driver_probe macro to initialize the driver. This macro ends up calling device_initcall as was used previously, but also allocates a platform device which gives us access to much nicer APIs such as platform_ioremap_resource, platform_get_irq and dev_err_probe. Signed-off-by: Emil Renner Berthing Signed-off-by: Hal Feng --- drivers/soc/sifive/sifive_l2_cache.c | 79 ++++++++++++++-------------- 1 file changed, 40 insertions(+), 39 deletions(-) diff --git a/drivers/soc/sifive/sifive_l2_cache.c b/drivers/soc/sifive/sifive_l2_cache.c index 59640a1d0b28..010d612f7420 100644 --- a/drivers/soc/sifive/sifive_l2_cache.c +++ b/drivers/soc/sifive/sifive_l2_cache.c @@ -7,9 +7,9 @@ */ #include #include -#include -#include -#include +#include +#include +#include #include #include @@ -96,12 +96,6 @@ static void l2_config_read(void) pr_info("L2CACHE: Index of the largest way enabled: %d\n", regval); } -static const struct of_device_id sifive_l2_ids[] = { - { .compatible = "sifive,fu540-c000-ccache" }, - { .compatible = "sifive,fu740-c000-ccache" }, - { /* end of table */ }, -}; - static ATOMIC_NOTIFIER_HEAD(l2_err_chain); int register_sifive_l2_error_notifier(struct notifier_block *nb) @@ -192,36 +186,29 @@ static irqreturn_t l2_int_handler(int irq, void *device) return IRQ_HANDLED; } -static int __init sifive_l2_init(void) +static int __init sifive_l2_probe(struct platform_device *pdev) { - struct device_node *np; - struct resource res; - int i, rc, intr_num; - - np = of_find_matching_node(NULL, sifive_l2_ids); - if (!np) - return -ENODEV; - - if (of_address_to_resource(np, 0, &res)) - return -ENODEV; - - l2_base = ioremap(res.start, resource_size(&res)); - if (!l2_base) - return -ENOMEM; - - intr_num = of_property_count_u32_elems(np, "interrupts"); - if (!intr_num) { - pr_err("L2CACHE: no interrupts property\n"); - return -ENODEV; - } - - for (i = 0; i < intr_num; i++) { - g_irq[i] = irq_of_parse_and_map(np, i); - rc = request_irq(g_irq[i], l2_int_handler, 0, "l2_ecc", NULL); - if (rc) { - pr_err("L2CACHE: Could not request IRQ %d\n", g_irq[i]); - return rc; - } + struct device *dev = &pdev->dev; + int nirqs; + int ret; + int i; + + l2_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(l2_base)) + return PTR_ERR(l2_base); + + nirqs = platform_irq_count(pdev); + if (nirqs <= 0) + return dev_err_probe(dev, -ENODEV, "no interrupts\n"); + + for (i = 0; i < nirqs; i++) { + g_irq[i] = platform_get_irq(pdev, i); + if (g_irq[i] < 0) + return g_irq[i]; + + ret = devm_request_irq(dev, g_irq[i], l2_int_handler, 0, pdev->name, NULL); + if (ret) + return dev_err_probe(dev, ret, "Could not request IRQ %d\n", g_irq[i]); } l2_config_read(); @@ -234,4 +221,18 @@ static int __init sifive_l2_init(void) #endif return 0; } -device_initcall(sifive_l2_init); + +static const struct of_device_id sifive_l2_match[] = { + { .compatible = "sifive,fu540-c000-ccache" }, + { .compatible = "sifive,fu740-c000-ccache" }, + { /* sentinel */ } +}; + +static struct platform_driver sifive_l2_driver = { + .driver = { + .name = "sifive_l2_cache", + .of_match_table = sifive_l2_match, + .suppress_bind_attrs = true, + }, +}; +builtin_platform_driver_probe(sifive_l2_driver, sifive_l2_probe);