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Received: from [2a01:799:961:d200:cca0:57ac:c55d:a485] (port=57178) by smtp.domeneshop.no with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oTTAj-0002O5-TA; Wed, 31 Aug 2022 21:14:45 +0200 Message-ID: Date: Wed, 31 Aug 2022 21:14:36 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: [PATCH v2 18/41] drm/connector: Add a function to lookup a TV mode by its name To: Maxime Ripard , Maxime Ripard , Ben Skeggs , David Airlie , Chen-Yu Tsai , Thomas Zimmermann , Jani Nikula , Lyude Paul , Philipp Zabel , Maarten Lankhorst , Rodrigo Vivi , Tvrtko Ursulin , Jernej Skrabec , Samuel Holland , Karol Herbst , Emma Anholt , Daniel Vetter , Joonas Lahtinen Cc: Hans de Goede , linux-arm-kernel@lists.infradead.org, Phil Elwell , intel-gfx@lists.freedesktop.org, Dave Stevenson , dri-devel@lists.freedesktop.org, Dom Cobley , linux-kernel@vger.kernel.org, nouveau@lists.freedesktop.org, linux-sunxi@lists.linux.dev, Mateusz Kwiatkowski , Geert Uytterhoeven , =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= References: <20220728-rpi-analog-tv-properties-v2-0-459522d653a7@cerno.tech> <20220728-rpi-analog-tv-properties-v2-18-459522d653a7@cerno.tech> From: =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= In-Reply-To: <20220728-rpi-analog-tv-properties-v2-18-459522d653a7@cerno.tech> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220831_121454_470359_CAB33673 X-CRM114-Status: GOOD ( 19.49 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Den 29.08.2022 15.11, skrev Maxime Ripard: > As part of the command line parsing rework coming in the next patches, > > we'll need to lookup drm_connector_tv_mode values by their name, already > > defined in drm_tv_mode_enum_list. > > > > In order to avoid any code duplication, let's do a function that will > > perform a lookup of a TV mode name and return its value. > > > > Signed-off-by: Maxime Ripard > > > > diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c > > index b1fcacd150e8..0fe01a1c20ad 100644 > > --- a/drivers/gpu/drm/drm_connector.c > > +++ b/drivers/gpu/drm/drm_connector.c > > @@ -1003,6 +1003,30 @@ static const struct drm_prop_enum_list drm_tv_mode_enum_list[] = { > > }; > > DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list) > > > > +/** > > + * drm_get_tv_mode_from_name - Translates a TV mode name into its enum value > > + * @name: TV Mode name we want to convert > > + * @len: Length of @name > > + * > > + * Translates @name into an enum drm_connector_tv_mode. > > + * > > + * Returns: the enum value on success, a negative errno otherwise. > > + */ > > +int drm_get_tv_mode_from_name(const char *name, size_t len) > > +{ > > + unsigned int i; > > + > > + for (i = 0; i < ARRAY_SIZE(drm_tv_mode_enum_list); i++) { > > + const struct drm_prop_enum_list *item = &drm_tv_mode_enum_list[i]; > > + > > + if (strlen(item->name) == len && !strncmp(item->name, name, len)) > > + return item->type; > > + } > > + > > + return -EINVAL; > > +} > > +EXPORT_SYMBOL(drm_get_tv_mode_from_name) Missing semicolon. Noralf. > > + > > static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { > > { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ > > { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ > > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h > > index bb39d2bb806e..49d261977d4e 100644 > > --- a/include/drm/drm_connector.h > > +++ b/include/drm/drm_connector.h > > @@ -1943,6 +1943,8 @@ const char *drm_get_dp_subconnector_name(int val); > > const char *drm_get_content_protection_name(int val); > > const char *drm_get_hdcp_content_type_name(int val); > > > > +int drm_get_tv_mode_from_name(const char *name, size_t len); > > + > > int drm_mode_create_dvi_i_properties(struct drm_device *dev); > > void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector); > > > > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel