diff options
Diffstat (limited to 'drivers/gpu/drm/drm_panic.c')
| -rw-r--r-- | drivers/gpu/drm/drm_panic.c | 71 |
1 files changed, 61 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c index 293d4dcbc80d..948aed00595e 100644 --- a/drivers/gpu/drm/drm_panic.c +++ b/drivers/gpu/drm/drm_panic.c @@ -7,16 +7,19 @@ */ #include <linux/font.h> +#include <linux/init.h> #include <linux/iosys-map.h> #include <linux/kdebug.h> #include <linux/kmsg_dump.h> +#include <linux/linux_logo.h> #include <linux/list.h> +#include <linux/math.h> #include <linux/module.h> +#include <linux/overflow.h> #include <linux/printk.h> #include <linux/types.h> #include <drm/drm_drv.h> -#include <drm/drm_format_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_framebuffer.h> #include <drm/drm_modeset_helper_vtables.h> @@ -78,7 +81,7 @@ static struct drm_panic_line panic_msg[] = { PANIC_LINE("Please reboot your computer."), }; -static const struct drm_panic_line logo[] = { +static const struct drm_panic_line logo_ascii[] = { PANIC_LINE(" .--. _"), PANIC_LINE(" |o_o | | |"), PANIC_LINE(" |:_/ | | |"), @@ -88,6 +91,42 @@ static const struct drm_panic_line logo[] = { PANIC_LINE(" \\___)=(___/"), }; +#if defined(CONFIG_LOGO) && !defined(MODULE) +static const struct linux_logo *logo_mono; + +static int drm_panic_setup_logo(void) +{ + const struct linux_logo *logo = fb_find_logo(1); + const unsigned char *logo_data; + struct linux_logo *logo_dup; + + if (!logo || logo->type != LINUX_LOGO_MONO) + return 0; + + /* The logo is __init, so we must make a copy for later use */ + logo_data = kmemdup(logo->data, + size_mul(DIV_ROUND_UP(logo->width, BITS_PER_BYTE), logo->height), + GFP_KERNEL); + if (!logo_data) + return -ENOMEM; + + logo_dup = kmemdup(logo, sizeof(*logo), GFP_KERNEL); + if (!logo_dup) { + kfree(logo_data); + return -ENOMEM; + } + + logo_dup->data = logo_data; + logo_mono = logo_dup; + + return 0; +} + +device_initcall(drm_panic_setup_logo); +#else +#define logo_mono ((const struct linux_logo *)NULL) +#endif + /* * Color conversion */ @@ -447,20 +486,27 @@ static void draw_txt_rectangle(struct drm_scanout_buffer *sb, static void draw_panic_static_user(struct drm_scanout_buffer *sb) { size_t msg_lines = ARRAY_SIZE(panic_msg); - size_t logo_lines = ARRAY_SIZE(logo); + size_t logo_ascii_lines = ARRAY_SIZE(logo_ascii); u32 fg_color = convert_from_xrgb8888(CONFIG_DRM_PANIC_FOREGROUND_COLOR, sb->format->format); u32 bg_color = convert_from_xrgb8888(CONFIG_DRM_PANIC_BACKGROUND_COLOR, sb->format->format); const struct font_desc *font = get_default_font(sb->width, sb->height, NULL, NULL); struct drm_rect r_screen, r_logo, r_msg; + unsigned int logo_width, logo_height; if (!font) return; r_screen = DRM_RECT_INIT(0, 0, sb->width, sb->height); - r_logo = DRM_RECT_INIT(0, 0, - get_max_line_len(logo, logo_lines) * font->width, - logo_lines * font->height); + if (logo_mono) { + logo_width = logo_mono->width; + logo_height = logo_mono->height; + } else { + logo_width = get_max_line_len(logo_ascii, logo_ascii_lines) * font->width; + logo_height = logo_ascii_lines * font->height; + } + + r_logo = DRM_RECT_INIT(0, 0, logo_width, logo_height); r_msg = DRM_RECT_INIT(0, 0, min(get_max_line_len(panic_msg, msg_lines) * font->width, sb->width), min(msg_lines * font->height, sb->height)); @@ -471,9 +517,14 @@ static void draw_panic_static_user(struct drm_scanout_buffer *sb) /* Fill with the background color, and draw text on top */ drm_panic_fill(sb, &r_screen, bg_color); - if ((r_msg.x1 >= drm_rect_width(&r_logo) || r_msg.y1 >= drm_rect_height(&r_logo)) && - drm_rect_width(&r_logo) < sb->width && drm_rect_height(&r_logo) < sb->height) { - draw_txt_rectangle(sb, font, logo, logo_lines, false, &r_logo, fg_color); + if ((r_msg.x1 >= logo_width || r_msg.y1 >= logo_height) && + logo_width <= sb->width && logo_height <= sb->height) { + if (logo_mono) + drm_panic_blit(sb, &r_logo, logo_mono->data, DIV_ROUND_UP(logo_width, 8), + fg_color); + else + draw_txt_rectangle(sb, font, logo_ascii, logo_ascii_lines, false, &r_logo, + fg_color); } draw_txt_rectangle(sb, font, panic_msg, msg_lines, true, &r_msg, fg_color); } @@ -582,7 +633,7 @@ static void draw_panic_dispatch(struct drm_scanout_buffer *sb) static void draw_panic_plane(struct drm_plane *plane) { - struct drm_scanout_buffer sb; + struct drm_scanout_buffer sb = { }; int ret; unsigned long flags; |