Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755199Ab2HYPK1 (ORCPT ); Sat, 25 Aug 2012 11:10:27 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:45060 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753332Ab2HYPKZ (ORCPT ); Sat, 25 Aug 2012 11:10:25 -0400 Date: Sat, 25 Aug 2012 08:10:20 -0700 From: Mark Brown To: Krystian Garbaciak Cc: linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com, lm-sensors@lm-sensors.org, linux-input@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-leds@vger.kernel.org, Samuel Ortiz , Liam Girdwood , Alessandro Zummo , Jean Delvare , Guenter Roeck , Dmitry Torokhov , Ashish Jangam , Andrew Jones , Donggeun Kim , Philippe =?iso-8859-1?Q?R=E9tornaz?= , Wim Van Sebroeck , Bryan Wu , "Richard Purdie Anthony Olech" Subject: Re: [RFC PATCH 2/8] regulator: Add Dialog DA906x voltage regulators support. Message-ID: <20120825151020.GB6520@opensource.wolfsonmicro.com> References: <201208241450@sw-eng-lt-dc-vm2> <201208241455@sw-eng-lt-dc-vm2> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201208241455@sw-eng-lt-dc-vm2> X-Cookie: You will soon forget this. 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: 2286 Lines: 75 On Fri, Aug 24, 2012 at 02:55:00PM +0100, Krystian Garbaciak wrote: > +static int da906x_set_voltage(struct regulator_dev *rdev, > + int min_uV, int max_uV, unsigned *selector) > +{ > + struct da906x_regulator *regl = rdev_get_drvdata(rdev); > + const struct field *fvol = ®l->info->voltage; > + int ret; > + unsigned val; > + > + val = regulator_map_voltage_linear(rdev, min_uV, max_uV); > + if (val < 0) > + return -EINVAL; > + > + val = (val + fvol->offset) << fvol->shift; > + ret = da906x_reg_update(regl->hw, fvol->addr, fvol->mask, val); > + if (ret >= 0) > + *selector = val; > + > + return ret; > +} This is just set_voltage_sel_regmap(). > +static int da906x_enable(struct regulator_dev *rdev) > +{ > + struct da906x_regulator *regl = rdev_get_drvdata(rdev); > + int ret; > + > + if (regl->info->suspend.mask) { > + /* Make sure to exit from suspend mode on enable */ > + ret = da906x_reg_clear_bits(regl->hw, regl->info->suspend.addr, > + regl->info->suspend.mask); > + if (ret < 0) > + return ret; > + > + /* BUCKs need mode update after wake-up from suspend state. */ > + ret = da906x_update_mode_internal(regl, SYS_STATE_NORMAL); > + if (ret < 0) > + return ret; > + } > + > + return regulator_enable_regmap(rdev); If suspend_mask is optional the regulators using it should just use the standard operation. > +/* Regulator event handlers */ > +irqreturn_t da906x_ldo_lim_event(int irq, void *data) By "event handler" you mean "interrupt" > + bits = da906x_reg_read(hw, DA906X_REG_STATUS_D); > + if (bits < 0) > + return IRQ_HANDLED; If you fail to detect an interrupt you report that you handled one...? > + if (!da906x_pdata) { > + dev_err(&pdev->dev, "No platform init data supplied\n"); > + return -ENODEV; > + } Platform data should be totally optional. > + bcores_merged = (ret & DA906X_BCORE_MERGE) ? true : false; > + bmem_bio_merged = (ret & DA906X_BUCK_MERGE) ? true : false; The use of the ternery operation here is even worse than normal, you can assign the values directly. -- 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/