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77e97abf12
Also removes random module and switches to new bcm2711 thermal driver. Boot tested on RPi 4B v1.1 4G. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
248 lines
7.5 KiB
Diff
248 lines
7.5 KiB
Diff
From b3212eba63b541206e12c8dc31fc0d99d916b210 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Mon, 18 Nov 2019 16:51:29 +0100
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Subject: [PATCH] drm/modes: parse_cmdline: Allow specifying
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stand-alone options
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Commit 7b1cce760afe38b40f0989cdf10b2190dccf9815 upstream.
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Some options which can be specified on the commandline, such as
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margin_right=..., margin_left=..., etc. are applied not only to the
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specified mode, but to all modes. As such it would be nice if the user
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can simply say e.g.
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video=HDMI-1:margin_right=14,margin_left=24,margin_bottom=36,margin_top=42
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This commit refactors drm_mode_parse_command_line_for_connector() to
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add support for this, and as a nice side effect also cleans up the
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function a bit.
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Acked-by: Maxime Ripard <mripard@kernel.org>
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Link: https://patchwork.freedesktop.org/patch/msgid/20191118155134.30468-8-hdegoede@redhat.com
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---
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drivers/gpu/drm/drm_modes.c | 92 +++++++------------
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.../gpu/drm/selftests/drm_cmdline_selftests.h | 2 +
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.../drm/selftests/test-drm_cmdline_parser.c | 50 ++++++++++
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3 files changed, 86 insertions(+), 58 deletions(-)
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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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@@ -1684,17 +1684,6 @@ static const char * const drm_named_mode
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"PAL",
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};
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-static bool drm_named_mode_is_in_whitelist(const char *mode, unsigned int size)
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-{
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- int i;
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-
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- for (i = 0; i < ARRAY_SIZE(drm_named_modes_whitelist); i++)
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- if (!strncmp(mode, drm_named_modes_whitelist[i], size))
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- return true;
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-
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- return false;
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-}
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-
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/**
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* drm_mode_parse_command_line_for_connector - parse command line modeline for connector
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* @mode_option: optional per connector mode option
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@@ -1725,7 +1714,7 @@ bool drm_mode_parse_command_line_for_con
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struct drm_cmdline_mode *mode)
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{
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const char *name;
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- bool named_mode = false, parse_extras = false;
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+ bool freestanding = false, parse_extras = false;
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unsigned int bpp_off = 0, refresh_off = 0, options_off = 0;
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unsigned int mode_end = 0;
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const char *bpp_ptr = NULL, *refresh_ptr = NULL, *extra_ptr = NULL;
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@@ -1745,49 +1734,14 @@ bool drm_mode_parse_command_line_for_con
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name = mode_option;
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- /*
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- * This is a bit convoluted. To differentiate between the
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- * named modes and poorly formatted resolutions, we need a
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- * bunch of things:
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- * - We need to make sure that the first character (which
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- * would be our resolution in X) is a digit.
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- * - If not, then it's either a named mode or a force on/off.
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- * To distinguish between the two, we need to run the
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- * extra parsing function, and if not, then we consider it
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- * a named mode.
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- *
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- * If this isn't enough, we should add more heuristics here,
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- * and matching unit-tests.
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- */
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- if (!isdigit(name[0]) && name[0] != 'x') {
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- unsigned int namelen = strlen(name);
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-
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- /*
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- * Only the force on/off options can be in that case,
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- * and they all take a single character.
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- */
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- if (namelen == 1) {
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- ret = drm_mode_parse_cmdline_extra(name, namelen, true,
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- connector, mode);
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- if (!ret)
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- return true;
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- }
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-
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- named_mode = true;
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- }
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-
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/* Try to locate the bpp and refresh specifiers, if any */
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bpp_ptr = strchr(name, '-');
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if (bpp_ptr)
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bpp_off = bpp_ptr - name;
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refresh_ptr = strchr(name, '@');
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- if (refresh_ptr) {
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- if (named_mode)
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- return false;
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-
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+ if (refresh_ptr)
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refresh_off = refresh_ptr - name;
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- }
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/* Locate the start of named options */
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options_ptr = strchr(name, ',');
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@@ -1807,23 +1761,45 @@ bool drm_mode_parse_command_line_for_con
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parse_extras = true;
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}
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- if (named_mode) {
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- if (mode_end + 1 > DRM_DISPLAY_MODE_LEN)
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- return false;
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-
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- if (!drm_named_mode_is_in_whitelist(name, mode_end))
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- return false;
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+ /* First check for a named mode */
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+ for (i = 0; i < ARRAY_SIZE(drm_named_modes_whitelist); i++) {
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+ ret = str_has_prefix(name, drm_named_modes_whitelist[i]);
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+ if (ret == mode_end) {
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+ if (refresh_ptr)
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+ return false; /* named + refresh is invalid */
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+
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+ strcpy(mode->name, drm_named_modes_whitelist[i]);
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+ mode->specified = true;
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+ break;
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+ }
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+ }
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- strscpy(mode->name, name, mode_end + 1);
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- } else {
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+ /* No named mode? Check for a normal mode argument, e.g. 1024x768 */
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+ if (!mode->specified && isdigit(name[0])) {
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ret = drm_mode_parse_cmdline_res_mode(name, mode_end,
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parse_extras,
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connector,
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mode);
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if (ret)
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return false;
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+
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+ mode->specified = true;
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+ }
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+
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+ /* No mode? Check for freestanding extras and/or options */
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+ if (!mode->specified) {
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+ unsigned int len = strlen(mode_option);
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+
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+ if (bpp_ptr || refresh_ptr)
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+ return false; /* syntax error */
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+
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+ if (len == 1 || (len >= 2 && mode_option[1] == ','))
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+ extra_ptr = mode_option;
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+ else
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+ options_ptr = mode_option - 1;
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+
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+ freestanding = true;
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}
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- mode->specified = true;
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if (bpp_ptr) {
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ret = drm_mode_parse_cmdline_bpp(bpp_ptr, &bpp_end_ptr, mode);
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@@ -1859,7 +1835,7 @@ bool drm_mode_parse_command_line_for_con
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else
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len = strlen(extra_ptr);
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- ret = drm_mode_parse_cmdline_extra(extra_ptr, len, false,
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+ ret = drm_mode_parse_cmdline_extra(extra_ptr, len, freestanding,
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connector, mode);
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if (ret)
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return false;
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@@ -1867,7 +1843,7 @@ bool drm_mode_parse_command_line_for_con
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if (options_ptr) {
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ret = drm_mode_parse_cmdline_options(options_ptr + 1,
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- false,
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+ freestanding,
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connector, mode);
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if (ret)
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return false;
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--- a/drivers/gpu/drm/selftests/drm_cmdline_selftests.h
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+++ b/drivers/gpu/drm/selftests/drm_cmdline_selftests.h
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@@ -63,3 +63,5 @@ cmdline_test(drm_cmdline_test_multiple_o
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cmdline_test(drm_cmdline_test_invalid_option)
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cmdline_test(drm_cmdline_test_bpp_extra_and_option)
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cmdline_test(drm_cmdline_test_extra_and_option)
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+cmdline_test(drm_cmdline_test_freestanding_options)
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+cmdline_test(drm_cmdline_test_freestanding_force_e_and_options)
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--- a/drivers/gpu/drm/selftests/test-drm_cmdline_parser.c
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+++ b/drivers/gpu/drm/selftests/test-drm_cmdline_parser.c
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@@ -1053,6 +1053,56 @@ static int drm_cmdline_test_extra_and_op
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return 0;
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}
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+static int drm_cmdline_test_freestanding_options(void *ignored)
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+{
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+ struct drm_cmdline_mode mode = { };
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+
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+ FAIL_ON(!drm_mode_parse_command_line_for_connector("margin_right=14,margin_left=24,margin_bottom=36,margin_top=42",
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+ &no_connector,
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+ &mode));
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+ FAIL_ON(mode.specified);
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+ FAIL_ON(mode.refresh_specified);
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+ FAIL_ON(mode.bpp_specified);
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+
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+ FAIL_ON(mode.tv_margins.right != 14);
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+ FAIL_ON(mode.tv_margins.left != 24);
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+ FAIL_ON(mode.tv_margins.bottom != 36);
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+ FAIL_ON(mode.tv_margins.top != 42);
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+
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+ FAIL_ON(mode.rb);
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+ FAIL_ON(mode.cvt);
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+ FAIL_ON(mode.interlace);
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+ FAIL_ON(mode.margins);
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+ FAIL_ON(mode.force != DRM_FORCE_UNSPECIFIED);
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+
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+ return 0;
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+}
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+
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+static int drm_cmdline_test_freestanding_force_e_and_options(void *ignored)
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+{
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+ struct drm_cmdline_mode mode = { };
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+
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+ FAIL_ON(!drm_mode_parse_command_line_for_connector("e,margin_right=14,margin_left=24,margin_bottom=36,margin_top=42",
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+ &no_connector,
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+ &mode));
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+ FAIL_ON(mode.specified);
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+ FAIL_ON(mode.refresh_specified);
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+ FAIL_ON(mode.bpp_specified);
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+
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+ FAIL_ON(mode.tv_margins.right != 14);
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+ FAIL_ON(mode.tv_margins.left != 24);
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+ FAIL_ON(mode.tv_margins.bottom != 36);
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+ FAIL_ON(mode.tv_margins.top != 42);
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+
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+ FAIL_ON(mode.rb);
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+ FAIL_ON(mode.cvt);
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+ FAIL_ON(mode.interlace);
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+ FAIL_ON(mode.margins);
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+ FAIL_ON(mode.force != DRM_FORCE_ON);
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+
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+ return 0;
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+}
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+
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#include "drm_selftest.c"
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static int __init test_drm_cmdline_init(void)
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