From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751209AbdE3IQA (ORCPT ); Tue, 30 May 2017 04:16:00 -0400 Received: from mail-wm0-f54.google.com ([74.125.82.54]:36289 "EHLO mail-wm0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750911AbdE3IP4 (ORCPT ); Tue, 30 May 2017 04:15:56 -0400 Date: Tue, 30 May 2017 09:15:52 +0100 From: Lee Jones To: Linus Walleij Cc: Daniel Thompson , Jingoo Han , linux-kernel@vger.kernel.org, Laurent Pinchart Subject: Re: [PATCH 2/2] backlight: gpio: delete pdata inversion Message-ID: <20170530081552.oiwidt76drjx5det@dell> References: <20170430081745.14364-1-linus.walleij@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20170430081745.14364-1-linus.walleij@linaro.org> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 30 Apr 2017, Linus Walleij wrote: > The option to invert the output of the GPIO (active low) is > not used by the only platform still using platform data to > set up a GPIO backlight (one SH board). Delete the option > as we do not expect to expand the use of board files for > this driver, and GPIO descriptors intrinsically keep track > of any signal inversion. > > Signed-off-by: Linus Walleij > --- > drivers/video/backlight/gpio_backlight.c | 15 ++------------- > include/linux/platform_data/gpio_backlight.h | 1 - > 2 files changed, 2 insertions(+), 14 deletions(-) Applied, thanks. > diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c > index 17dd8071ad4d..8c19dc6c9236 100644 > --- a/drivers/video/backlight/gpio_backlight.c > +++ b/drivers/video/backlight/gpio_backlight.c > @@ -25,7 +25,6 @@ struct gpio_backlight { > struct device *fbdev; > > struct gpio_desc *gpiod; > - int active; > int def_value; > }; > > @@ -39,8 +38,7 @@ static int gpio_backlight_update_status(struct backlight_device *bl) > bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) > brightness = 0; > > - gpiod_set_value_cansleep(gbl->gpiod, > - brightness ? gbl->active : !gbl->active); > + gpiod_set_value_cansleep(gbl->gpiod, brightness); > > return 0; > } > @@ -72,8 +70,6 @@ static int gpio_backlight_probe_dt(struct platform_device *pdev, > flags = GPIOD_OUT_HIGH; > else > flags = GPIOD_OUT_LOW; > - /* GPIO descriptors keep track of inversion */ > - gbl->active = 1; > > gbl->gpiod = devm_gpiod_get(dev, NULL, flags); > if (IS_ERR(gbl->gpiod)) { > @@ -124,15 +120,8 @@ static int gpio_backlight_probe(struct platform_device *pdev) > unsigned long flags = GPIOF_DIR_OUT; > > gbl->fbdev = pdata->fbdev; > - gbl->active = pdata->active_low ? 0 : 1; > gbl->def_value = pdata->def_value; > - > - if (gbl->active) > - flags |= gbl->def_value ? > - GPIOF_INIT_HIGH : GPIOF_INIT_LOW; > - else > - flags |= gbl->def_value ? > - GPIOF_INIT_LOW : GPIOF_INIT_HIGH; > + flags |= gbl->def_value ? GPIOF_INIT_HIGH : GPIOF_INIT_LOW; > > ret = devm_gpio_request_one(gbl->dev, pdata->gpio, flags, > pdata ? pdata->name : "backlight"); > diff --git a/include/linux/platform_data/gpio_backlight.h b/include/linux/platform_data/gpio_backlight.h > index 5ae0d9c80d4d..683d90453c41 100644 > --- a/include/linux/platform_data/gpio_backlight.h > +++ b/include/linux/platform_data/gpio_backlight.h > @@ -14,7 +14,6 @@ struct gpio_backlight_platform_data { > struct device *fbdev; > int gpio; > int def_value; > - bool active_low; > const char *name; > }; > -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog