diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2021-10-22 11:25:36 +0200 |
|---|---|---|
| committer | Petri Latvala <petri.latvala@intel.com> | 2021-11-01 16:22:15 +0200 |
| commit | 1cec02637a962785731edb8730b9bfcd797e1059 (patch) | |
| tree | a5f3187281682eaf5dd07f3a9412a01af5290a57 /tests/fbdev.c | |
| parent | 3458490c14afe3cb8aa873fa9e520e1c815ea068 (diff) | |
tests/fbdev: Test for validity of video mode settings
Add basic tests for video mode resolution and color on fbdev
devices.
v2:
* respect FB_VMODE_YWRAP (Ville)
* test horizontal resolution against line length
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'tests/fbdev.c')
| -rw-r--r-- | tests/fbdev.c | 49 |
1 files changed, 41 insertions, 8 deletions
diff --git a/tests/fbdev.c b/tests/fbdev.c index 443a43dc..2cf137d2 100644 --- a/tests/fbdev.c +++ b/tests/fbdev.c @@ -27,6 +27,7 @@ #include <errno.h> #include <fcntl.h> +#include <limits.h> #include <string.h> #include <sys/ioctl.h> #include <sys/mman.h> @@ -50,14 +51,46 @@ static void mode_tests(int fd) igt_describe("Check if screeninfo is valid"); igt_subtest("info") { - unsigned long size; - - size = var_info.yres * fix_info.line_length; - igt_assert_f(size <= fix_info.smem_len, - "screen size (%d x %d) of pitch %d does not fit within mappable area of size %u\n", - var_info.xres, var_info.yres, - fix_info.line_length, - fix_info.smem_len); + unsigned long nbits, nlines; + + /* video memory configuration */ + igt_assert_f(fix_info.line_length, "line length not set\n"); + igt_assert_f(fix_info.smem_len, "size of video memory not set\n"); + igt_assert_f(fix_info.line_length <= fix_info.smem_len, + "line length (%u) exceeds available video memory (%u)\n", + fix_info.line_length, fix_info.smem_len); + + /* color format */ + igt_assert_f(var_info.bits_per_pixel, "bits-per-pixel not set\n"); + + /* horizontal resolution */ + igt_assert_f(var_info.xres, "horizontal resolution not set\n"); + igt_assert_f(var_info.xres_virtual, "horizontal virtual resolution not set\n"); + igt_assert_f(var_info.xres <= var_info.xres_virtual, + "horizontal virtual resolution (%u) less than horizontal resolution (%u)\n", + var_info.xres_virtual, var_info.xres); + igt_assert_f(var_info.xoffset <= (var_info.xres_virtual - var_info.xres), + "screen horizontal offset (%u) overflow\n", + var_info.xoffset); + nbits = fix_info.line_length * CHAR_BIT; + igt_assert_f((var_info.xres_virtual * var_info.bits_per_pixel) <= nbits, + "vertical virtual resolution (%u) with bpp %u exceeds line length %u\n", + var_info.yres_virtual, var_info.bits_per_pixel, fix_info.line_length); + + /* vertical resolution */ + igt_assert_f(var_info.yres, "vertical resolution not set\n"); + igt_assert_f(var_info.yres_virtual, "vertical virtual resolution not set\n"); + igt_assert_f(var_info.yres <= var_info.yres_virtual, + "vertical virtual resolution (%u) less than vertical resolution (%u)\n", + var_info.yres_virtual, var_info.yres); + igt_assert_f((var_info.vmode & FB_VMODE_YWRAP) || + (var_info.yoffset <= (var_info.yres_virtual - var_info.yres)), + "screen vertical offset (%u) overflow\n", + var_info.yoffset); + nlines = fix_info.smem_len / fix_info.line_length; + igt_assert_f(var_info.yres_virtual <= nlines, + "vertical virtual resolution (%u) with line length %u exceeds available video memory\n", + var_info.yres_virtual, fix_info.line_length); } } |