From: "Noralf Trønnes" <noralf@tronnes.org>
To: Maxime Ripard <maxime@cerno.tech>,
Karol Herbst <kherbst@redhat.com>,
Jani Nikula <jani.nikula@linux.intel.com>,
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
Daniel Vetter <daniel@ffwll.ch>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
David Airlie <airlied@linux.ie>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Lyude Paul <lyude@redhat.com>, Maxime Ripard <mripard@kernel.org>,
Emma Anholt <emma@anholt.net>, Chen-Yu Tsai <wens@csie.org>,
Samuel Holland <samuel@sholland.org>,
Ben Skeggs <bskeggs@redhat.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: "Dom Cobley" <dom@raspberrypi.com>,
linux-sunxi@lists.linux.dev,
"Dave Stevenson" <dave.stevenson@raspberrypi.com>,
intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
nouveau@lists.freedesktop.org,
"Geert Uytterhoeven" <geert@linux-m68k.org>,
linux-arm-kernel@lists.infradead.org,
"Mateusz Kwiatkowski" <kfyatek+publicgit@gmail.com>,
dri-devel@lists.freedesktop.org,
"Hans de Goede" <hdegoede@redhat.com>,
"Phil Elwell" <phil@raspberrypi.com>,
"Noralf Trønnes" <noralf@tronnes.org>
Subject: Re: [PATCH v5 12/22] drm/connector: Add a function to lookup a TV mode by its name
Date: Mon, 17 Oct 2022 12:44:45 +0200 [thread overview]
Message-ID: <7dcf479c-8ac7-ed47-8587-30268684373c@tronnes.org> (raw)
In-Reply-To: <20220728-rpi-analog-tv-properties-v5-12-d841cc64fe4b@cerno.tech>
Den 13.10.2022 15.18, 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 <maxime@cerno.tech>
> ---
> drivers/gpu/drm/drm_connector.c | 24 ++++++++++++++++++++++++
> include/drm/drm_connector.h | 2 ++
> 2 files changed, 26 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 820f4c730b38..30611c616435 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -991,6 +991,30 @@ 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)
Do we really need to pass in length here?
item->name has to always be NUL terminated otherwise things would break
elsewhere, so it shouldn't be necessary AFAICS.
Noralf.
> +{
> + 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);
> +
> 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 a501db7d2222..a33f24a76738 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -1864,6 +1864,8 @@ 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);
>
>
next prev parent reply other threads:[~2022-10-17 10:45 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220728-rpi-analog-tv-properties-v5-0-d841cc64fe4b@cerno.tech>
[not found] ` <20220728-rpi-analog-tv-properties-v5-22-d841cc64fe4b@cerno.tech>
2022-10-13 18:23 ` [PATCH v5 22/22] drm/sun4i: tv: Convert to the new TV mode property Jernej Škrabec
2022-10-14 7:38 ` Maxime Ripard
2022-10-15 8:59 ` Jernej Škrabec
[not found] ` <20220728-rpi-analog-tv-properties-v5-1-d841cc64fe4b@cerno.tech>
2022-10-15 15:06 ` [PATCH v5 01/22] drm/tests: Add Kunit Helpers Noralf Trønnes
[not found] ` <20220728-rpi-analog-tv-properties-v5-8-d841cc64fe4b@cerno.tech>
2022-10-16 16:11 ` [PATCH v5 08/22] drm/modes: Move named modes parsing to a separate function Noralf Trønnes
2022-10-18 7:57 ` Maxime Ripard
[not found] ` <20220728-rpi-analog-tv-properties-v5-6-d841cc64fe4b@cerno.tech>
2022-10-16 17:34 ` [PATCH v5 06/22] drm/modes: Add a function to generate analog display modes Mateusz Kwiatkowski
2022-10-18 8:08 ` Maxime Ripard
[not found] ` <20220728-rpi-analog-tv-properties-v5-13-d841cc64fe4b@cerno.tech>
2022-10-16 17:51 ` [PATCH v5 13/22] drm/modes: Introduce the tv_mode property as a command-line option Mateusz Kwiatkowski
2022-10-17 10:21 ` Noralf Trønnes
[not found] ` <20220728-rpi-analog-tv-properties-v5-19-d841cc64fe4b@cerno.tech>
2022-10-16 18:12 ` [PATCH v5 19/22] drm/vc4: vec: Check for VEC output constraints Mateusz Kwiatkowski
2022-10-16 18:16 ` Mateusz Kwiatkowski
2022-10-18 8:27 ` Maxime Ripard
[not found] ` <20220728-rpi-analog-tv-properties-v5-20-d841cc64fe4b@cerno.tech>
2022-10-16 18:52 ` [PATCH v5 20/22] drm/vc4: vec: Convert to the new TV mode property Mateusz Kwiatkowski
2022-10-16 18:56 ` Mateusz Kwiatkowski
2022-10-17 10:31 ` Noralf Trønnes
2022-10-18 10:00 ` Maxime Ripard
[not found] ` <da2b4cb4-5d12-3161-64e3-e87a8cc63e81@gmail.com>
2022-10-20 11:58 ` maxime
2022-10-17 11:39 ` Noralf Trønnes
[not found] ` <20220728-rpi-analog-tv-properties-v5-21-d841cc64fe4b@cerno.tech>
2022-10-16 19:02 ` [PATCH v5 21/22] drm/vc4: vec: Add support for more analog TV standards Mateusz Kwiatkowski
2022-10-16 19:46 ` [PATCH] drm/vc4: vec: Add support for PAL-60 Mateusz Kwiatkowski
2022-10-18 8:31 ` Maxime Ripard
2022-10-18 20:57 ` Mateusz Kwiatkowski
2022-10-20 15:34 ` maxime
[not found] ` <20220728-rpi-analog-tv-properties-v5-16-d841cc64fe4b@cerno.tech>
2022-10-17 10:36 ` [PATCH v5 16/22] drm/atomic-helper: Add a TV properties reset helper Noralf Trønnes
[not found] ` <20220728-rpi-analog-tv-properties-v5-12-d841cc64fe4b@cerno.tech>
2022-10-17 10:44 ` Noralf Trønnes [this message]
2022-10-18 9:33 ` [PATCH v5 12/22] drm/connector: Add a function to lookup a TV mode by its name Maxime Ripard
2022-10-18 12:29 ` Noralf Trønnes
2022-10-19 8:48 ` Maxime Ripard
2022-10-19 10:43 ` Noralf Trønnes
2022-10-20 11:29 ` maxime
[not found] ` <20220728-rpi-analog-tv-properties-v5-7-d841cc64fe4b@cerno.tech>
2022-10-15 16:58 ` [PATCH v5 07/22] drm/client: Add some tests for drm_connector_pick_cmdline_mode() Noralf Trønnes
2022-10-20 7:55 ` Michał Winiarski
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