Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934212Ab2HWStv (ORCPT ); Thu, 23 Aug 2012 14:49:51 -0400 Received: from a83-160-107-163.adsl.xs4all.nl ([83.160.107.163]:41226 "EHLO d4rwin.no-ip.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754566Ab2HWSts (ORCPT ); Thu, 23 Aug 2012 14:49:48 -0400 Date: Thu, 23 Aug 2012 20:48:31 +0200 From: Matthias Kaehlcke To: "Patil, Rachna" Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-iio@vger.kernel.org, Dmitry Torokhov , Dmitry Torokhov , Jonathan Cameron , Samuel Ortiz Subject: Re: [PATCH 2/5] MFD: ti_tscadc: Add support for TI's TSC/ADC MFDevice Message-ID: <20120823184830.GE27787@darwin> Mail-Followup-To: Matthias Kaehlcke , "Patil, Rachna" , linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-iio@vger.kernel.org, Dmitry Torokhov , Dmitry Torokhov , Jonathan Cameron , Samuel Ortiz References: <1345718997-18304-1-git-send-email-rachna@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1345718997-18304-1-git-send-email-rachna@ti.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3153 Lines: 107 Hi, El Thu, Aug 23, 2012 at 04:19:57PM +0530 Patil, Rachna ha dit: > Add the mfd core driver which supports touchscreen > and ADC. > With this patch we are only adding infrastructure to > support the MFD clients. > > Signed-off-by: Patil, Rachna > --- > diff --git a/drivers/mfd/ti_tscadc.c b/drivers/mfd/ti_tscadc.c > ... > +static int __devinit ti_tscadc_probe(struct platform_device *pdev) > +{ > + struct ti_tscadc_dev *tscadc; > + int err, ctrl; > + int clk_value, clock_rate; > + struct resource *res; > + struct clk *clk; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + if (!res) { > + dev_err(&pdev->dev, "no memory resource defined.\n"); > + return -EINVAL; > + } > + > + /* Allocate memory for device */ > + tscadc = kzalloc(sizeof(struct ti_tscadc_dev), GFP_KERNEL); > + if (!tscadc) { > + dev_err(&pdev->dev, "failed to allocate memory.\n"); > + return -ENOMEM; > + } > + > + res = request_mem_region(res->start, resource_size(res), pdev->name); > + if (!res) { > + dev_err(&pdev->dev, "failed to reserve registers.\n"); > + err = -EBUSY; > + goto err_free_mem; > + } > + > + tscadc->tscadc_base = ioremap(res->start, resource_size(res)); > + if (!tscadc->tscadc_base) { > + dev_err(&pdev->dev, "failed to map registers.\n"); > + err = -ENOMEM; > + goto err_release_mem; > + } > + > + tscadc->irq = platform_get_irq(pdev, 0); > + if (tscadc->irq < 0) { > + dev_err(&pdev->dev, "no irq ID is specified.\n"); > + return -ENODEV; goto err_iounmap_mem; > ... > +err_fail: > + pm_runtime_put_sync(&pdev->dev); > + pm_runtime_disable(&pdev->dev); > + iounmap(tscadc->tscadc_base); > +err_release_mem: > + release_mem_region(res->start, resource_size(res)); > + mfd_remove_devices(tscadc->dev); > +err_free_mem: > + platform_set_drvdata(pdev, NULL); shouldn't be necessary as the platform device doesn't exist any longer > ... > +static int __devexit ti_tscadc_remove(struct platform_device *pdev) > +{ > + struct ti_tscadc_dev *tscadc = platform_get_drvdata(pdev); > + struct resource *res; > + > + tscadc_writel(tscadc, REG_SE, 0x00); > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + iounmap(tscadc->tscadc_base); > + release_mem_region(res->start, resource_size(res)); > + > + pm_runtime_put_sync(&pdev->dev); > + pm_runtime_disable(&pdev->dev); > + > + mfd_remove_devices(tscadc->dev); > + kfree(tscadc); > + > + platform_set_drvdata(pdev, NULL); same as above best regards -- Matthias Kaehlcke Embedded Linux Developer Amsterdam The only way to do great work is to love what you do (Steve Jobs) .''`. using free software / Debian GNU/Linux | http://debian.org : :' : `. `'` gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/