[PATCH 3/5] vgacon: Use vt_font_cursor_{start,end}()
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2026-09-11 09:45:43
Also in:
dri-devel, linux-serial, sashiko-reviews
Subsystem:
console subsystem, framebuffer layer, the rest · Maintainers:
Greg Kroah-Hartman, Helge Deller, Linus Torvalds
Replace vgacon's custom cursor metrics with the shared helpers vc_font_cursor_start() and vc_font_cursor_end(). Note that the _end() function returns the index of the scanline below the cursor, while VGA hardware expects the cursor's final scanline. Hence vgacon subtracts 1 from the end value. The cursor shapes remain mostly unchanged, except that non-underline cursors now also use the glyph's top-most and bottom-most scanline. This follows the style used by fbcon. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- drivers/video/console/vgacon.c | 36 ++++++---------------------------- 1 file changed, 6 insertions(+), 30 deletions(-)
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index 536e7fe4d142..b16ddb1b09a7 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c@@ -36,6 +36,7 @@ #include <linux/module.h> #include <linux/types.h> #include <linux/fs.h> +#include <linux/font.h> #include <linux/kernel.h> #include <linux/console.h> #include <linux/string.h>
@@ -505,18 +506,18 @@ static void vgacon_set_cursor_size(int from, int to) static void vgacon_cursor(struct vc_data *c, bool enable) { - unsigned int c_height; + unsigned int c_type; if (c->vc_mode != KD_TEXT) return; vgacon_restore_screen(c); - c_height = c->vc_cell_height; + c_type = c->vc_cursor_type; write_vga(14, (c->vc_pos - vga_vram_base) / 2); - if (!enable) { + if (!enable || CUR_SIZE(c_type) == CUR_NONE) { if (vga_video_type >= VIDEO_TYPE_VGAC) vgacon_set_cursor_size(31, 30); else
@@ -524,33 +525,8 @@ static void vgacon_cursor(struct vc_data *c, bool enable) return; } - switch (CUR_SIZE(c->vc_cursor_type)) { - case CUR_UNDERLINE: - vgacon_set_cursor_size(c_height - (c_height < 10 ? 2 : 3), - c_height - (c_height < 10 ? 1 : 2)); - break; - case CUR_TWO_THIRDS: - vgacon_set_cursor_size(c_height / 3, - c_height - (c_height < 10 ? 1 : 2)); - break; - case CUR_LOWER_THIRD: - vgacon_set_cursor_size(c_height * 2 / 3, - c_height - (c_height < 10 ? 1 : 2)); - break; - case CUR_LOWER_HALF: - vgacon_set_cursor_size(c_height / 2, - c_height - (c_height < 10 ? 1 : 2)); - break; - case CUR_NONE: - if (vga_video_type >= VIDEO_TYPE_VGAC) - vgacon_set_cursor_size(31, 30); - else - vgacon_set_cursor_size(31, 31); - break; - default: - vgacon_set_cursor_size(1, c_height); - break; - } + vgacon_set_cursor_size(vc_font_cursor_start(&c->vc_font, c_type), + vc_font_cursor_end(&c->vc_font, c_type) - 1); } static void vgacon_doresize(struct vc_data *c,
--
2.55.0