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103 lines
3.3 KiB
Diff
103 lines
3.3 KiB
Diff
From 99b367ee521e48beae92bea59515dd0f08f2e55b Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime.ripard@bootlin.com>
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Date: Wed, 19 Jun 2019 12:17:51 +0200
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Subject: [PATCH 737/806] drm/modes: Parse overscan properties
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Commit 3d46a3007cd8f73bae502bf5c171977b91d7aacc upstream.
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Properly configuring the overscan properties might be needed for the
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initial setup of the framebuffer for display that still have overscan.
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Let's allow for more properties on the kernel command line to setup each
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margin.
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Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
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Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
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Link: https://patchwork.freedesktop.org/patch/msgid/e481f1628e3768ca49226ec2115cfa4dfcbd5e4c.1560783090.git-series.maxime.ripard@bootlin.com
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---
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Documentation/fb/modedb.txt | 2 ++
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drivers/gpu/drm/drm_modes.c | 44 +++++++++++++++++++++++++++++++++++++
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include/drm/drm_connector.h | 5 +++++
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3 files changed, 51 insertions(+)
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--- a/Documentation/fb/modedb.txt
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+++ b/Documentation/fb/modedb.txt
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@@ -57,6 +57,8 @@ Options can also be passed after the mod
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Valid options are:
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+ - margin_top, margin_bottom, margin_left, margin_right (integer):
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+ Number of pixels in the margins, typically to deal with overscan on TVs
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- reflect_x (boolean): Perform an axial symmetry on the X axis
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- reflect_y (boolean): Perform an axial symmetry on the Y axis
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- rotate (integer): Rotate the initial framebuffer by x
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--- a/drivers/gpu/drm/drm_modes.c
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+++ b/drivers/gpu/drm/drm_modes.c
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@@ -1615,6 +1615,50 @@ static int drm_mode_parse_cmdline_option
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} else if (!strncmp(option, "reflect_y", delim - option)) {
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rotation |= DRM_MODE_REFLECT_Y;
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sep = delim;
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+ } else if (!strncmp(option, "margin_right", delim - option)) {
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+ const char *value = delim + 1;
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+ unsigned int margin;
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+
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+ margin = simple_strtol(value, &sep, 10);
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+
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+ /* Make sure we have parsed something */
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+ if (sep == value)
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+ return -EINVAL;
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+
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+ mode->tv_margins.right = margin;
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+ } else if (!strncmp(option, "margin_left", delim - option)) {
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+ const char *value = delim + 1;
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+ unsigned int margin;
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+
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+ margin = simple_strtol(value, &sep, 10);
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+
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+ /* Make sure we have parsed something */
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+ if (sep == value)
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+ return -EINVAL;
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+
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+ mode->tv_margins.left = margin;
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+ } else if (!strncmp(option, "margin_top", delim - option)) {
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+ const char *value = delim + 1;
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+ unsigned int margin;
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+
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+ margin = simple_strtol(value, &sep, 10);
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+
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+ /* Make sure we have parsed something */
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+ if (sep == value)
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+ return -EINVAL;
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+
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+ mode->tv_margins.top = margin;
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+ } else if (!strncmp(option, "margin_bottom", delim - option)) {
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+ const char *value = delim + 1;
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+ unsigned int margin;
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+
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+ margin = simple_strtol(value, &sep, 10);
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+
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+ /* Make sure we have parsed something */
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+ if (sep == value)
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+ return -EINVAL;
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+
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+ mode->tv_margins.bottom = margin;
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} else {
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return -EINVAL;
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}
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--- a/include/drm/drm_connector.h
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+++ b/include/drm/drm_connector.h
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@@ -886,6 +886,11 @@ struct drm_cmdline_mode {
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* DRM_MODE_ROTATE_0 and DRM_MODE_ROTATE_180.
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*/
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unsigned int rotation_reflection;
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+
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+ /**
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+ * @tv_margins: TV margins to apply to the mode.
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+ */
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+ struct drm_connector_tv_margins tv_margins;
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};
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/**
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