From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEC6AC2D0A3 for ; Mon, 9 Nov 2020 08:46:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 975792076E for ; Mon, 9 Nov 2020 08:46:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="dGqVrjIm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727920AbgKIIqy (ORCPT ); Mon, 9 Nov 2020 03:46:54 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:39676 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726127AbgKIIqx (ORCPT ); Mon, 9 Nov 2020 03:46:53 -0500 Received: from pendragon.ideasonboard.com (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 249C72FE; Mon, 9 Nov 2020 09:46:51 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1604911611; bh=dvN2vwjEk0CcEKWuvwsGCxa5Wucy0oymFDVo2T9XQv8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dGqVrjImkmaQHhmCAehQx9pdEP+HYf60Lp0lY2OYMggVb2U8DOCImi0z18WK0EJ6Z 7Mmb6mWSeu4jRBtDTU934x4wirjS7FeP9EYI78+ap4pHPuQ6BElgE7hQgE15y1fQ33 Q56/PWn9DW0vEQkKrLdHldvlYyh0N4FXc0XVdnVA= Date: Mon, 9 Nov 2020 10:46:48 +0200 From: Laurent Pinchart To: Tomi Valkeinen Cc: Sebastian Reichel , Nikhil Devshatwar , linux-omap@vger.kernel.org, dri-devel@lists.freedesktop.org, Sekhar Nori , Tony Lindgren , "H . Nikolaus Schaller" , Sebastian Reichel Subject: Re: [PATCH v3 21/56] drm/omap: dsi: drop useless sync() Message-ID: <20201109084648.GR6029@pendragon.ideasonboard.com> References: <20201105120333.947408-1-tomi.valkeinen@ti.com> <20201105120333.947408-22-tomi.valkeinen@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20201105120333.947408-22-tomi.valkeinen@ti.com> Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Hi Tomi and Sebastian, Thank you for the patch. On Thu, Nov 05, 2020 at 02:02:58PM +0200, Tomi Valkeinen wrote: > From: Sebastian Reichel > > The DSI sync() function only locks the bus and then releases > it again. Currently the only invocation is directly before > update(), which locks the bus anyways. > > Signed-off-by: Sebastian Reichel > Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart > --- > .../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 18 ------------------ > drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 - > drivers/gpu/drm/omapdrm/omap_crtc.c | 3 --- > 3 files changed, 22 deletions(-) > > diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c > index f59775cabe2d..a9609eed6bfa 100644 > --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c > +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c > @@ -845,23 +845,6 @@ static int dsicm_update(struct omap_dss_device *dssdev, > return r; > } > > -static int dsicm_sync(struct omap_dss_device *dssdev) > -{ > - struct panel_drv_data *ddata = to_panel_data(dssdev); > - struct omap_dss_device *src = ddata->src; > - > - dev_dbg(&ddata->dsi->dev, "sync\n"); > - > - mutex_lock(&ddata->lock); > - src->ops->dsi.bus_lock(src); > - src->ops->dsi.bus_unlock(src); > - mutex_unlock(&ddata->lock); > - > - dev_dbg(&ddata->dsi->dev, "sync done\n"); > - > - return 0; > -} > - > static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable) > { > struct omap_dss_device *src = ddata->src; > @@ -950,7 +933,6 @@ static const struct omap_dss_device_ops dsicm_ops = { > > static const struct omap_dss_driver dsicm_dss_driver = { > .update = dsicm_update, > - .sync = dsicm_sync, > }; > > static int dsicm_probe_of(struct mipi_dsi_device *dsi) > diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h > index 55d5bca59f81..9bbd2c0f3187 100644 > --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h > +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h > @@ -385,7 +385,6 @@ struct omap_dss_device { > struct omap_dss_driver { > int (*update)(struct omap_dss_device *dssdev, > u16 x, u16 y, u16 w, u16 h); > - int (*sync)(struct omap_dss_device *dssdev); > }; > > struct dss_device *omapdss_get_dss(void); > diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c > index 328a4a74f534..dac9ccda98df 100644 > --- a/drivers/gpu/drm/omapdrm/omap_crtc.c > +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c > @@ -379,9 +379,6 @@ static void omap_crtc_manual_display_update(struct work_struct *data) > return; > } > > - if (dssdrv->sync) > - dssdrv->sync(dssdev); > - > ret = dssdrv->update(dssdev, 0, 0, mode->hdisplay, mode->vdisplay); > if (ret < 0) { > spin_lock_irq(&dev->event_lock); -- Regards, Laurent Pinchart