From patchwork Thu Apr 18 12:41:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 10907217 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C26C922 for ; Thu, 18 Apr 2019 12:42:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F17B028CA9 for ; Thu, 18 Apr 2019 12:42:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E54F328CB3; Thu, 18 Apr 2019 12:42:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7098D28CA9 for ; Thu, 18 Apr 2019 12:42:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VrsWne6Rti9gddIACwvnNBqf0EmzJ1K7MoQLiXTPQrk=; b=SL+OZKA7szvxTt BBvssYzwVVBfgC0a5B3oekSC+B2e6kqSPSx0OHiGWIVOVUhx09mnHAs5tP0W4dP0mJBwF+iR7ihN5 JMkWWY2bkIL6UrEaM3H9MKmm1FIFY9Zc9puJgcxerAQr6ieFFqZzTcbfSK/8TKxuA95GT1qZCS+p4 4gy1Xwsv7+f8Wuu8YTIPzGXZx2wP7bVxXH/hEZkzQHJvLu8Ufnzx+t2fRfKjY9KCqV9PnIS5Ba0jz N0r2s/BqwTRWuwYoOFKOajSVtU0jWHEBGCvEkgq8DRn/E17zHaKLHf08s1JPo9/ZRwDM+X72sJU9R hy+9PUIVBPtVq2Mhf2/A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hH6N1-0008RF-HA; Thu, 18 Apr 2019 12:42:27 +0000 Received: from relay6-d.mail.gandi.net ([217.70.183.198]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hH6Mn-0008Dg-IB for linux-arm-kernel@lists.infradead.org; Thu, 18 Apr 2019 12:42:15 +0000 X-Originating-IP: 90.88.160.238 Received: from localhost (aaubervilliers-681-1-42-238.w90-88.abo.wanadoo.fr [90.88.160.238]) (Authenticated sender: maxime.ripard@bootlin.com) by relay6-d.mail.gandi.net (Postfix) with ESMTPSA id 3F7CBC0011; Thu, 18 Apr 2019 12:42:10 +0000 (UTC) From: Maxime Ripard To: Maarten Lankhorst , Sean Paul , Maxime Ripard , Daniel Vetter , David Airlie Subject: [PATCH v3 2/6] drm/modes: Support modes names on the command line Date: Thu, 18 Apr 2019 14:41:55 +0200 Message-Id: <791ec173cce4007a7eadf2e68877bb640bf8dd84.1555591281.git-series.maxime.ripard@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190418_054213_897159_31E7BAD1 X-CRM114-Status: GOOD ( 21.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eben@raspberrypi.org, dri-devel@lists.freedesktop.org, Paul Kocialkowski , Eric Anholt , noralf@tronnes.org, Thomas Petazzoni , Maxime Ripard , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Maxime Ripard The drm subsystem also uses the video= kernel parameter, and in the documentation refers to the fbdev documentation for that parameter. However, that documentation also says that instead of giving the mode using its resolution we can also give a name. However, DRM doesn't handle that case at the moment. Even though in most case it shouldn't make any difference, it might be useful for analog modes, where different standards might have the same resolution, but still have a few different parameters that are not encoded in the modes (NTSC vs NTSC-J vs PAL-M for example). Signed-off-by: Maxime Ripard Reviewed-by: Noralf Trønnes --- drivers/gpu/drm/drm_client_modeset.c | 4 ++- drivers/gpu/drm/drm_connector.c | 3 +- drivers/gpu/drm/drm_modes.c | 52 ++++++++++++++++++++--------- include/drm/drm_connector.h | 1 +- 4 files changed, 44 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index 2a428ac00930..f2869c82510c 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -149,6 +149,10 @@ drm_connector_pick_cmdline_mode(struct drm_connector *connector) prefer_non_interlace = !cmdline_mode->interlace; again: list_for_each_entry(mode, &connector->modes, head) { + /* Check (optional) mode name first */ + if (!strcmp(mode->name, cmdline_mode->name)) + return mode; + /* check width/height */ if (mode->hdisplay != cmdline_mode->xres || mode->vdisplay != cmdline_mode->yres) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 2355124849db..e33814f5940e 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -139,8 +139,9 @@ static void drm_connector_get_cmdline_mode(struct drm_connector *connector) connector->force = mode->force; } - DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", + DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@%dHz%s%s%s\n", connector->name, + mode->name ? mode->name : "", mode->xres, mode->yres, mode->refresh_specified ? mode->refresh : 60, mode->rb ? " reduced blanking" : "", diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 3f89198f0891..9613c1a28487 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1557,7 +1557,7 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option, struct drm_cmdline_mode *mode) { const char *name; - bool parse_extras = false; + bool named_mode = false, parse_extras = false; unsigned int bpp_off = 0, refresh_off = 0; unsigned int mode_end = 0; char *bpp_ptr = NULL, *refresh_ptr = NULL, *extra_ptr = NULL; @@ -1576,8 +1576,14 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option, name = mode_option; + /* + * If the first character is not a digit, then it means that + * we have a named mode. + */ if (!isdigit(name[0])) - return false; + named_mode = true; + else + named_mode = false; /* Try to locate the bpp and refresh specifiers, if any */ bpp_ptr = strchr(name, '-'); @@ -1588,6 +1594,9 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option, refresh_ptr = strchr(name, '@'); if (refresh_ptr) { + if (named_mode) + return false; + refresh_off = refresh_ptr - name; mode->refresh_specified = true; } @@ -1604,12 +1613,16 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option, parse_extras = true; } - ret = drm_mode_parse_cmdline_res_mode(name, mode_end, - parse_extras, - connector, - mode); - if (ret) - return false; + if (named_mode) { + strncpy(mode->name, name, mode_end); + } else { + ret = drm_mode_parse_cmdline_res_mode(name, mode_end, + parse_extras, + connector, + mode); + if (ret) + return false; + } mode->specified = true; if (bpp_ptr) { @@ -1637,14 +1650,23 @@ bool drm_mode_parse_command_line_for_connector(const char *mode_option, extra_ptr = refresh_end_ptr; if (extra_ptr) { - int remaining = strlen(name) - (extra_ptr - name); + if (!named_mode) { + int len = strlen(name) - (extra_ptr - name); - /* - * We still have characters to process, while - * we shouldn't have any - */ - if (remaining > 0) - return false; + ret = drm_mode_parse_cmdline_extra(extra_ptr, len, + connector, mode); + if (ret) + return false; + } else { + int remaining = strlen(name) - (extra_ptr - name); + + /* + * We still have characters to process, while + * we shouldn't have any + */ + if (remaining > 0) + return false; + } } return true; diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 02a131202add..06aa3b9cb920 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -896,6 +896,7 @@ struct drm_connector_funcs { /* mode specified on the command line */ struct drm_cmdline_mode { + char name[DRM_DISPLAY_MODE_LEN]; bool specified; bool refresh_specified; bool bpp_specified;