From patchwork Tue May 26 21:55:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 11571423 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E1D58739 for ; Tue, 26 May 2020 21:55:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D157020888 for ; Tue, 26 May 2020 21:55:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390639AbgEZVzy (ORCPT ); Tue, 26 May 2020 17:55:54 -0400 Received: from mail.baikalelectronics.com ([87.245.175.226]:60016 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390293AbgEZVzx (ORCPT ); Tue, 26 May 2020 17:55:53 -0400 Received: from localhost (unknown [127.0.0.1]) by mail.baikalelectronics.ru (Postfix) with ESMTP id 8244B8030878; Tue, 26 May 2020 21:55:44 +0000 (UTC) X-Virus-Scanned: amavisd-new at baikalelectronics.ru Received: from mail.baikalelectronics.ru ([127.0.0.1]) by localhost (mail.baikalelectronics.ru [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Zl9OkjrUfZnm; Wed, 27 May 2020 00:55:43 +0300 (MSK) From: Serge Semin To: Jarkko Nikula , Wolfram Sang , Andy Shevchenko , Mika Westerberg CC: Serge Semin , Serge Semin , Alexey Malahov , Thomas Bogendoerfer , Rob Herring , , , , Subject: [PATCH v3 11/12] i2c: designware: Move reg-space remapping into a dedicated function Date: Wed, 27 May 2020 00:55:27 +0300 Message-ID: <20200526215528.16417-12-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20200526215528.16417-1-Sergey.Semin@baikalelectronics.ru> References: <20200526215528.16417-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org This is a preparation patch before adding a quirk with custom registers map creation required for the Baikal-T1 System I2C support. Since we've touched this code anyway let's replace platform_get_resource()-devm_ioremap_resource() tuple with ready-to-use helper devm_platform_get_and_ioremap_resource(). Signed-off-by: Serge Semin Cc: Alexey Malahov Cc: Thomas Bogendoerfer Cc: Rob Herring Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org --- Changelog v3: - This is a new patch, which has been created due to declining the glue-layer approach. --- drivers/i2c/busses/i2c-designware-platdrv.c | 23 ++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 5ef7ffcf7f85..93bdcfae57df 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -234,6 +234,18 @@ static const u32 supported_speeds[] = { I2C_MAX_STANDARD_MODE_FREQ, }; +static int dw_i2c_plat_request_regs(struct dw_i2c_dev *dev) +{ + struct platform_device *pdev = to_platform_device(dev->dev); + int ret = 0; + + dev->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); + if (IS_ERR(dev->base)) + ret = PTR_ERR(dev->base); + + return ret; +} + static int dw_i2c_plat_probe(struct platform_device *pdev) { struct dw_i2c_platform_data *pdata = dev_get_platdata(&pdev->dev); @@ -241,7 +253,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) struct dw_i2c_dev *dev; struct i2c_timings *t; u32 acpi_speed; - struct resource *mem; int i, irq, ret; irq = platform_get_irq(pdev, 0); @@ -253,16 +264,14 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) return -ENOMEM; dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev); - - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - dev->base = devm_ioremap_resource(&pdev->dev, mem); - if (IS_ERR(dev->base)) - return PTR_ERR(dev->base); - dev->dev = &pdev->dev; dev->irq = irq; platform_set_drvdata(pdev, dev); + ret = dw_i2c_plat_request_regs(dev); + if (ret) + return ret; + dev->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL); if (IS_ERR(dev->rst)) return PTR_ERR(dev->rst);