linux-kernel - [PATCH v2 17/41] drm/connector: Add pixel clock to cmdline mode

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Message-Id: <20220728-rpi-analog-tv-properties-v2-17-459522d653a7@cerno.tech>
Date:   Mon, 29 Aug 2022 15:11:31 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Maxime Ripard <mripard@...nel.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        David Airlie <airlied@...ux.ie>, Chen-Yu Tsai <wens@...e.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Lyude Paul <lyude@...hat.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Karol Herbst <kherbst@...hat.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        Emma Anholt <emma@...olt.net>, Daniel Vetter <daniel@...ll.ch>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc:     Maxime Ripard <maxime@...no.tech>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-arm-kernel@...ts.infradead.org,
        Phil Elwell <phil@...pberrypi.com>,
        intel-gfx@...ts.freedesktop.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        dri-devel@...ts.freedesktop.org, Dom Cobley <dom@...pberrypi.com>,
        linux-kernel@...r.kernel.org, nouveau@...ts.freedesktop.org,
        linux-sunxi@...ts.linux.dev,
        Mateusz Kwiatkowski <kfyatek+publicgit@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH v2 17/41] drm/connector: Add pixel clock to cmdline mode

We'll need to get the pixel clock to generate proper display modes for
all the current named modes. Let's add it to struct drm_cmdline_mode and
fill it when parsing the named mode.

Signed-off-by: Maxime Ripard <maxime@...no.tech>

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 5e898699b532..73d01e755496 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -2208,22 +2208,24 @@ static int drm_mode_parse_cmdline_options(const char *str,
 
 struct drm_named_mode {
 	const char *name;
+	unsigned int pixel_clock_khz;
 	unsigned int xres;
 	unsigned int yres;
 	unsigned int flags;
 };
 
-#define NAMED_MODE(_name, _x, _y, _flags)		\
+#define NAMED_MODE(_name, _pclk, _x, _y, _flags)	\
 	{						\
 		.name = _name,				\
+		.pixel_clock_khz = _pclk,		\
 		.xres = _x,				\
 		.yres = _y,				\
 		.flags = _flags,			\
 	}
 
 static const struct drm_named_mode drm_named_modes[] = {
-	NAMED_MODE("NTSC", 720, 480, DRM_MODE_FLAG_INTERLACE),
-	NAMED_MODE("PAL", 720, 576, DRM_MODE_FLAG_INTERLACE),
+	NAMED_MODE("NTSC", 13500, 720, 480, DRM_MODE_FLAG_INTERLACE),
+	NAMED_MODE("PAL", 13500, 720, 576, DRM_MODE_FLAG_INTERLACE),
 };
 
 static int drm_mode_parse_cmdline_named_mode(const char *name,
@@ -2265,6 +2267,7 @@ static int drm_mode_parse_cmdline_named_mode(const char *name,
 			continue;
 
 		strcpy(cmdline_mode->name, mode->name);
+		cmdline_mode->pixel_clock = mode->pixel_clock_khz;
 		cmdline_mode->xres = mode->xres;
 		cmdline_mode->yres = mode->yres;
 		cmdline_mode->interlace = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 7d3881f35e7c..bb39d2bb806e 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1352,6 +1352,13 @@ struct drm_cmdline_mode {
 	 */
 	bool bpp_specified;
 
+	/**
+	 * @pixel_clock:
+	 *
+	 * Pixel Clock in kHz. Optional.
+	 */
+	unsigned int pixel_clock;
+
 	/**
 	 * @xres:
 	 *

-- 
b4 0.10.0-dev-65ba7