2 * Copyright (c) 2014 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
14 #include <video_console.h>
16 #include <dm/uclass-internal.h>
20 * These tests use the standard sandbox frame buffer, the resolution of which
21 * is defined in the device tree. This only supports 16bpp so the tests only
22 * test that code path. It would be possible to adjust this fairly easily,
23 * by adjusting the bpix value in struct sandbox_sdl_plat. However the code
24 * in sandbox_sdl_sync() would also need to change to handle the different
27 DECLARE_GLOBAL_DATA_PTR;
29 /* Basic test of the video uclass */
30 static int dm_test_video_base(struct unit_test_state *uts)
32 struct video_priv *priv;
35 ut_assertok(uclass_get_device(UCLASS_VIDEO, 0, &dev));
36 ut_asserteq(1366, video_get_xsize(dev));
37 ut_asserteq(768, video_get_ysize(dev));
38 priv = dev_get_uclass_priv(dev);
39 ut_asserteq(priv->fb_size, 1366 * 768 * 2);
43 DM_TEST(dm_test_video_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
46 * compress_frame_buffer() - Compress the frame buffer and return its size
48 * We want to write tests which perform operations on the video console and
49 * check that the frame buffer ends up with the correct contents. But it is
50 * painful to store 'known good' images for comparison with the frame
51 * buffer. As an alternative, we can compress the frame buffer and check the
52 * size of the compressed data. This provides a pretty good level of
53 * certainty and the resulting tests need only check a single value.
56 * @return compressed size of the frame buffer, or -ve on error
58 static int compress_frame_buffer(struct udevice *dev)
60 struct video_priv *priv = dev_get_uclass_priv(dev);
65 destlen = priv->fb_size;
66 dest = malloc(priv->fb_size);
69 ret = BZ2_bzBuffToBuffCompress(dest, &destlen,
70 priv->fb, priv->fb_size,
80 * Call this function at any point to halt and show the current display. Be
81 * sure to run the test with the -l flag.
83 static void __maybe_unused see_output(void)
89 /* Test text output works on the video console */
90 static int dm_test_video_text(struct unit_test_state *uts)
92 struct udevice *dev, *con;
96 #define SCROLL_LINES 100
98 ut_assertok(uclass_get_device(UCLASS_VIDEO, 0, &dev));
99 ut_asserteq(46, compress_frame_buffer(dev));
101 ut_assertok(uclass_get_device(UCLASS_VIDEO_CONSOLE, 0, &con));
102 vidconsole_putc_xy(con, 0, 0, 'a');
103 ut_asserteq(79, compress_frame_buffer(dev));
105 vidconsole_putc_xy(con, 0, 0, ' ');
106 ut_asserteq(46, compress_frame_buffer(dev));
108 for (i = 0; i < 20; i++)
109 vidconsole_putc_xy(con, i * 8, 0, ' ' + i);
110 ut_asserteq(273, compress_frame_buffer(dev));
112 vidconsole_set_row(con, 0, WHITE);
113 ut_asserteq(46, compress_frame_buffer(dev));
115 for (i = 0; i < 20; i++)
116 vidconsole_putc_xy(con, i * 8, 0, ' ' + i);
117 ut_asserteq(273, compress_frame_buffer(dev));
121 DM_TEST(dm_test_video_text, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
123 /* Test handling of special characters in the console */
124 static int dm_test_video_chars(struct unit_test_state *uts)
126 struct udevice *dev, *con;
127 const char *test_string = "Well\b\b\b\bxhe is\r \n\ta very modest \bman\n\t\tand Has much to\b\bto be modest about.";
130 ut_assertok(uclass_get_device(UCLASS_VIDEO, 0, &dev));
131 ut_assertok(uclass_get_device(UCLASS_VIDEO_CONSOLE, 0, &con));
132 for (s = test_string; *s; s++)
133 vidconsole_put_char(con, *s);
134 ut_asserteq(466, compress_frame_buffer(dev));
138 DM_TEST(dm_test_video_chars, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
141 * check_vidconsole_output() - Run a text console test
144 * @rot: Console rotation (0, 90, 180, 270)
145 * @wrap_size: Expected size of compressed frame buffer for the wrap test
146 * @scroll_size: Same for the scroll test
147 * @return 0 on success
149 static int check_vidconsole_output(struct unit_test_state *uts, int rot,
150 int wrap_size, int scroll_size)
152 struct udevice *dev, *con;
153 struct sandbox_sdl_plat *plat;
156 ut_assertok(uclass_find_device(UCLASS_VIDEO, 0, &dev));
157 ut_assert(!device_active(dev));
158 plat = dev_get_platdata(dev);
161 ut_assertok(uclass_get_device(UCLASS_VIDEO, 0, &dev));
162 ut_assertok(uclass_get_device(UCLASS_VIDEO_CONSOLE, 0, &con));
163 ut_asserteq(46, compress_frame_buffer(dev));
165 /* Check display wrap */
166 for (i = 0; i < 120; i++)
167 vidconsole_put_char(con, 'A' + i % 50);
168 ut_asserteq(wrap_size, compress_frame_buffer(dev));
170 /* Check display scrolling */
171 for (i = 0; i < SCROLL_LINES; i++) {
172 vidconsole_put_char(con, 'A' + i % 50);
173 vidconsole_put_char(con, '\n');
175 ut_asserteq(scroll_size, compress_frame_buffer(dev));
177 /* If we scroll enough, the screen becomes blank again */
178 for (i = 0; i < SCROLL_LINES; i++)
179 vidconsole_put_char(con, '\n');
180 ut_asserteq(46, compress_frame_buffer(dev));
185 /* Test text output through the console uclass */
186 static int dm_test_video_context(struct unit_test_state *uts)
188 return check_vidconsole_output(uts, 0, 788, 453);
190 DM_TEST(dm_test_video_context, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
192 /* Test rotated text output through the console uclass */
193 static int dm_test_video_rotation1(struct unit_test_state *uts)
195 ut_assertok(check_vidconsole_output(uts, 1, 1112, 680));
199 DM_TEST(dm_test_video_rotation1, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
201 /* Test rotated text output through the console uclass */
202 static int dm_test_video_rotation2(struct unit_test_state *uts)
204 ut_assertok(check_vidconsole_output(uts, 2, 785, 446));
208 DM_TEST(dm_test_video_rotation2, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
210 /* Test rotated text output through the console uclass */
211 static int dm_test_video_rotation3(struct unit_test_state *uts)
213 ut_assertok(check_vidconsole_output(uts, 3, 1134, 681));
217 DM_TEST(dm_test_video_rotation3, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);