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authorAmaury Pouly <amaury.pouly@gmail.com>2016-11-06 00:15:08 +0100
committerAmaury Pouly <amaury.pouly@gmail.com>2016-11-06 00:15:08 +0100
commit25bd580509eb9a8e36d37acec93cfec97f3821b8 (patch)
treee33d8ff4b83402952ba8de7066c2b910b8e08f98
parent5017babb307122d8567ca78a5721e96c4d7ff8f2 (diff)
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Change-Id: I32e23035a608ee04a69690975ab4bf629a902388
-rw-r--r--utils/nwztools/plattools/test_fb.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/utils/nwztools/plattools/test_fb.c b/utils/nwztools/plattools/test_fb.c
new file mode 100644
index 0000000000..77e8d4e497
--- /dev/null
+++ b/utils/nwztools/plattools/test_fb.c
@@ -0,0 +1,152 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2011 by Amaury Pouly
+ *
+ * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
+ * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "nwz_lib.h"
+#include "nwz_plattools.h"
+#include <linux/fb.h>
+#include <stdint.h>
+#include <sys/mman.h>
+
+static struct fb_fix_screeninfo finfo;
+static struct fb_var_screeninfo vinfo;
+static uint8_t *framebuffer;
+
+static inline uint32_t read32(uint8_t *p)
+{
+ return *p | *(p + 1) << 8 | *(p + 2) << 16 | *(p + 3) << 24;
+}
+
+static inline void write32(uint8_t *p, uint32_t val)
+{
+ *p++ = val & 0xff; val >>= 8;
+ *p++ = val & 0xff; val >>= 8;
+ *p++ = val & 0xff; val >>= 8;
+ *p++ = val;
+}
+
+/* assume lsb and little-endian */
+static inline void put_pix_mask(uint8_t *location, int offset, int len, uint8_t pix)
+{
+ /* adjust pixel */
+ pix >>= 8 - len;
+ uint32_t mask = ((1 << len) - 1) << offset;
+ uint32_t val = read32(location);
+ val = ((val) & ~mask) | pix << offset;
+ write32(location, val);
+}
+
+static inline void put_pix(int x, int y, uint8_t r, uint8_t g, uint8_t b)
+{
+ x += vinfo.xoffset;
+ y += vinfo.yoffset;
+ uint8_t *location = framebuffer + x * (vinfo.bits_per_pixel / 8) + y * finfo.line_length;
+ put_pix_mask(location, vinfo.red.offset, vinfo.red.length, r);
+ put_pix_mask(location, vinfo.green.offset, vinfo.green.length, g);
+ put_pix_mask(location, vinfo.blue.offset, vinfo.blue.length, b);
+}
+
+static void dump_fb(FILE *out, const char *path)
+{
+ fprintf(out, "%s:\n", path);
+ int fd = open(path, O_RDWR);
+ if(fd < 0)
+ {
+ fprintf(out, " cannot open");
+ return;
+ }
+ /* get fixed info */
+ if(ioctl(fd, FBIOGET_FSCREENINFO, &finfo) < 0)
+ {
+ fprintf(out, " ioctl failed (fix info)");
+ close(fd);
+ return;
+ }
+ fprintf(out, " identification: %s\n", finfo.id);
+ fprintf(out, " type: %d\n", finfo.type);
+ fprintf(out, " visual: %d\n", finfo.visual);
+ fprintf(out, " accel: %d\n", finfo.accel);
+ fprintf(out, " line length: %d\n", finfo.line_length);
+ fprintf(out, " mem length: %d\n", finfo.smem_len);
+ /* get variable info */
+ if(ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) < 0)
+ {
+ close(fd);
+ fprintf(out, " ioctl failed (var info)");
+ return;
+ }
+ fprintf(out, " xres: %d\n", vinfo.xres);
+ fprintf(out, " yres: %d\n", vinfo.yres);
+ fprintf(out, " xoff: %d\n", vinfo.xoffset);
+ fprintf(out, " yoff: %d\n", vinfo.yoffset);
+ fprintf(out, " bbp: %d\n", vinfo.bits_per_pixel);
+ fprintf(out, " red: %d-%d\n", vinfo.red.offset + vinfo.red.length - 1, vinfo.red.offset);
+ fprintf(out, " green: %d-%d\n", vinfo.green.offset + vinfo.green.length - 1, vinfo.green.offset);
+ fprintf(out, " blue: %d-%d\n", vinfo.blue.offset + vinfo.blue.length - 1, vinfo.blue.offset);
+ /* get mode info */
+ struct nwz_fb_image_info mode_info;
+ nwz_fb_set_standard_mode(fd);
+ if(ioctl(fd, NWZ_FB_GET_MODE, &mode_info) < 0)
+ {
+ close(fd);
+ fprintf(out, " ioctl failed (get mode)\n");
+ return;
+ }
+ fprintf(out, " tc_enable: %d\n", mode_info.tc_enable);
+ fprintf(out, " t_color: %d\n", mode_info.t_color);
+ fprintf(out, " alpha: %d\n", mode_info.alpha);
+ fprintf(out, " rot: %d\n", mode_info.rot);
+ fprintf(out, " page: %d\n", mode_info.page);
+ fprintf(out, " update: %d\n", mode_info.update);
+ /* mmap device (but avoid TV) */
+ if(vinfo.xres != 720)
+ {
+ long screensize = vinfo.yres_virtual * finfo.line_length;
+ framebuffer = mmap(0, screensize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, (off_t)0);
+ if(framebuffer == 0)
+ {
+ close(fd);
+ fprintf(out, " mmap failed");
+ return;
+ }
+ for(int y = 0; y < 10; y++)
+ for(int x = 0; x < 10; x++)
+ {
+ put_pix(x, y, 0xff, 0, 0);
+ put_pix(x + 10, y, 0, 0xff, 0);
+ put_pix(x + 20, y, 0, 0, 0xff);
+ }
+ }
+ sleep(3);
+ close(fd);
+}
+
+int NWZ_TOOL_MAIN(test_fb)(int argc, char **argv)
+{
+ FILE *f = fopen("/contents/fb.txt", "w");
+ if(!f)
+ f = stdout;
+ dump_fb(f, "/dev/fb/0");
+ if(f)
+ fclose(f);
+ return 0;
+}