Hi everybody, I've developed a small fbdev application for internal test purpose that might be useful to other developers, so I'm releasing it under the GPL. The code can be found in a git repository at http://git.ideasonboard.org/?p=fbdev-test.git;a=summary. I'm also adding the initial patch to this e-mail, in case someone would like to review the code :-) diff -Nur a/fbdev.c b/fbdev.c --- a/fbdev.c 1970-01-01 01:00:00.000000000 +0100 +++ b/fbdev.c 2011-04-29 17:04:03.000000000 +0200 @@ -0,0 +1,1062 @@ +/* + * fbdev -- Frame buffer device test application + * + * Copyright (C) 2011 Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> + * + * 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 program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + */ + +#include <errno.h> +#include <fcntl.h> +#include <getopt.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/time.h> + +#include <linux/fb.h> + +#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0])) + +struct device { + int fd; + void *mem; + + struct fb_fix_screeninfo fix_info; + struct fb_var_screeninfo var_info; +}; + +enum fb_fill_mode { + FB_FILL_NONE = 0, + FB_FILL_DISPLAY = 1, + FB_FILL_VIRTUAL = 2, +}; + +/* ----------------------------------------------------------------------------- + * FB information display + */ + +struct fb_value_name { + unsigned int value; + const char *name; +}; + +static const struct fb_value_name fb_type_names[] = { + { FB_TYPE_PACKED_PIXELS, "Packed Pixels" }, + { FB_TYPE_PLANES, "Non Interleaved Planes" }, + { FB_TYPE_INTERLEAVED_PLANES, "Interleaved Planes" }, + { FB_TYPE_TEXT, "Text/Attributes" }, + { FB_TYPE_VGA_PLANES, "EGA/VGA Planes" }, +}; + +static const struct fb_value_name fb_visual_names[] = { + { FB_VISUAL_MONO01, "Monochrome (white 0, black 1)" }, + { FB_VISUAL_MONO10, "Monochrome (white 1, black 0)" }, + { FB_VISUAL_TRUECOLOR, "True Color" }, + { FB_VISUAL_PSEUDOCOLOR, "Pseudo Color" }, + { FB_VISUAL_DIRECTCOLOR, "Direct Color" }, + { FB_VISUAL_STATIC_PSEUDOCOLOR, "Pseudo Color (read-only)" }, +}; + +static const struct fb_value_name fb_accel_names[] = { + { FB_ACCEL_NONE, "no hardware accelerator" }, + { FB_ACCEL_ATARIBLITT, "Atari Blitter" }, + { FB_ACCEL_AMIGABLITT, "Amiga Blitter" }, + { FB_ACCEL_S3_TRIO64, "Cybervision64 (S3 Trio64)" }, + { FB_ACCEL_NCR_77C32BLT, "RetinaZ3 (NCR 77C32BLT)" }, + { FB_ACCEL_S3_VIRGE, "Cybervision64/3D (S3 ViRGE)" }, + { FB_ACCEL_ATI_MACH64GX, "ATI Mach 64GX family" }, + { FB_ACCEL_DEC_TGA, "DEC 21030 TGA" }, + { FB_ACCEL_ATI_MACH64CT, "ATI Mach 64CT family" }, + { FB_ACCEL_ATI_MACH64VT, "ATI Mach 64CT family VT class" }, + { FB_ACCEL_ATI_MACH64GT, "ATI Mach 64CT family GT class" }, + { FB_ACCEL_SUN_CREATOR, "Sun Creator/Creator3D" }, + { FB_ACCEL_SUN_CGSIX, "Sun cg6" }, + { FB_ACCEL_SUN_LEO, "Sun leo/zx" }, + { FB_ACCEL_IMS_TWINTURBO, "IMS Twin Turbo" }, + { FB_ACCEL_3DLABS_PERMEDIA2, "3Dlabs Permedia 2" }, + { FB_ACCEL_MATROX_MGA2064W, "Matrox MGA2064W (Millenium)" }, + { FB_ACCEL_MATROX_MGA1064SG, "Matrox MGA1064SG (Mystique)" }, + { FB_ACCEL_MATROX_MGA2164W, "Matrox MGA2164W (Millenium II)" }, + { FB_ACCEL_MATROX_MGA2164W_AGP, "Matrox MGA2164W (Millenium II)" }, + { FB_ACCEL_MATROX_MGAG100, "Matrox G100 (Productiva G100)" }, + { FB_ACCEL_MATROX_MGAG200, "Matrox G200 (Myst, Mill, ...)" }, + { FB_ACCEL_SUN_CG14, "Sun cgfourteen" }, + { FB_ACCEL_SUN_BWTWO, "Sun bwtwo" }, + { FB_ACCEL_SUN_CGTHREE, "Sun cgthree" }, + { FB_ACCEL_SUN_TCX, "Sun tcx" }, + { FB_ACCEL_MATROX_MGAG400, "Matrox G400" }, + { FB_ACCEL_NV3, "nVidia RIVA 128" }, + { FB_ACCEL_NV4, "nVidia RIVA TNT" }, + { FB_ACCEL_NV5, "nVidia RIVA TNT2" }, + { FB_ACCEL_CT_6555x, "C&T 6555x" }, + { FB_ACCEL_3DFX_BANSHEE, "3Dfx Banshee" }, + { FB_ACCEL_ATI_RAGE128, "ATI Rage128 family" }, + { FB_ACCEL_IGS_CYBER2000, "CyberPro 2000" }, + { FB_ACCEL_IGS_CYBER2010, "CyberPro 2010" }, + { FB_ACCEL_IGS_CYBER5000, "CyberPro 5000" }, + { FB_ACCEL_SIS_GLAMOUR, "SiS 300/630/540" }, + { FB_ACCEL_3DLABS_PERMEDIA3, "3Dlabs Permedia 3" }, + { FB_ACCEL_ATI_RADEON, "ATI Radeon family" }, + { FB_ACCEL_I810, "Intel 810/815" }, + { FB_ACCEL_SIS_GLAMOUR_2, "SiS 315, 650, 740" }, + { FB_ACCEL_SIS_XABRE, "SiS 330 (\"Xabre\")" }, + { FB_ACCEL_I830, "Intel 830M/845G/85x/865G" }, + { FB_ACCEL_NV_10, "nVidia Arch 10" }, + { FB_ACCEL_NV_20, "nVidia Arch 20" }, + { FB_ACCEL_NV_30, "nVidia Arch 30" }, + { FB_ACCEL_NV_40, "nVidia Arch 40" }, + { FB_ACCEL_XGI_VOLARI_V, "XGI Volari V3XT, V5, V8" }, + { FB_ACCEL_XGI_VOLARI_Z, "XGI Volari Z7" }, + { FB_ACCEL_OMAP1610, "TI OMAP16xx" }, + { FB_ACCEL_TRIDENT_TGUI, "Trident TGUI" }, + { FB_ACCEL_TRIDENT_3DIMAGE, "Trident 3DImage" }, + { FB_ACCEL_TRIDENT_BLADE3D, "Trident Blade3D" }, + { FB_ACCEL_TRIDENT_BLADEXP, "Trident BladeXP" }, + { FB_ACCEL_CIRRUS_ALPINE, "Cirrus Logic 543x/544x/5480" }, + { FB_ACCEL_NEOMAGIC_NM2070, "NeoMagic NM2070" }, + { FB_ACCEL_NEOMAGIC_NM2090, "NeoMagic NM2090" }, + { FB_ACCEL_NEOMAGIC_NM2093, "NeoMagic NM2093" }, + { FB_ACCEL_NEOMAGIC_NM2097, "NeoMagic NM2097" }, + { FB_ACCEL_NEOMAGIC_NM2160, "NeoMagic NM2160" }, + { FB_ACCEL_NEOMAGIC_NM2200, "NeoMagic NM2200" }, + { FB_ACCEL_NEOMAGIC_NM2230, "NeoMagic NM2230" }, + { FB_ACCEL_NEOMAGIC_NM2360, "NeoMagic NM2360" }, + { FB_ACCEL_NEOMAGIC_NM2380, "NeoMagic NM2380" }, + { FB_ACCEL_SAVAGE4, "S3 Savage4" }, + { FB_ACCEL_SAVAGE3D, "S3 Savage3D" }, + { FB_ACCEL_SAVAGE3D_MV, "S3 Savage3D-MV" }, + { FB_ACCEL_SAVAGE2000, "S3 Savage2000" }, + { FB_ACCEL_SAVAGE_MX_MV, "S3 Savage/MX-MV" }, + { FB_ACCEL_SAVAGE_MX, "S3 Savage/MX" }, + { FB_ACCEL_SAVAGE_IX_MV, "S3 Savage/IX-MV" }, + { FB_ACCEL_SAVAGE_IX, "S3 Savage/IX" }, + { FB_ACCEL_PROSAVAGE_PM, "S3 ProSavage PM133" }, + { FB_ACCEL_PROSAVAGE_KM, "S3 ProSavage KM133" }, + { FB_ACCEL_S3TWISTER_P, "S3 Twister" }, + { FB_ACCEL_S3TWISTER_K, "S3 TwisterK" }, + { FB_ACCEL_SUPERSAVAGE, "S3 Supersavage" }, + { FB_ACCEL_PROSAVAGE_DDR, "S3 ProSavage DDR" }, + { FB_ACCEL_PROSAVAGE_DDRK, "S3 ProSavage DDR-K" }, +}; + +static const char *fb_value_name(const struct fb_value_name *names, + unsigned int size, unsigned int value) +{ + unsigned int i; + + for (i = 0; i < size; ++i) { + if (names[i].value == value) + return names[i].name; + } + + return "Unknown"; +} + +static const char *fb_type_name(unsigned int type) +{ + return fb_value_name(fb_type_names, ARRAY_SIZE(fb_type_names), type); +} + +static const char *fb_visual_name(unsigned int visual) +{ + return fb_value_name(fb_visual_names, ARRAY_SIZE(fb_visual_names), visual); +} + +static const char *fb_accel_name(unsigned int accel) +{ + return fb_value_name(fb_accel_names, ARRAY_SIZE(fb_accel_names), accel); +} + +/* + * fb_print_fix - Print fixed screen information + * @dev: FB device + * @var: fixed screen information + */ +static void fb_print_fix(struct device *dev __attribute__((__unused__)), + struct fb_fix_screeninfo *fix) +{ + printf("--- Fixed screen info ---\n"); + printf(" Type:\t\t%s\n", fb_type_name(fix->type)); + printf(" Visual:\t%s\n", fb_visual_name(fix->visual)); + printf(" Chip/card:\t%s\n", fb_accel_name(fix->accel)); + + printf(" Memory:\t%u bytes @0x%08lx\n", fix->smem_len, + fix->smem_start); + + if (fix->xpanstep == 0) + printf(" X Pan:\t\tUnsupported\n"); + else + printf(" X Pan Step:\t%u\n", fix->xpanstep); + + if (fix->ypanstep == 0) + printf(" Y Pan:\t\tUnsupported\n"); + else + printf(" Y Pan Step:\t%u\n", fix->ypanstep); + + printf(" Line Length:\t%u bytes\n", fix->line_length); +} + +/* + * fb_print_var - Print fixed screen information + * @dev: FB device + * @var: variable screen information + */ +static void fb_print_var(struct device *dev, struct fb_var_screeninfo *var) +{ + unsigned int i; + + printf("--- Variable screen info ---\n"); + printf(" Resolution:\t\t%ux%u\n", var->xres, var->yres); + printf(" Virtual Resolution:\t%ux%u\n", var->xres_virtual, + var->yres_virtual); + printf(" X/Y Offset:\t\t(%u,%u)\n", var->xoffset, var->yoffset); + printf(" Size:\t\t\t%umm x %umm\n", var->width, var->height); + + if (dev->fix_info.visual == FB_VISUAL_TRUECOLOR) { + printf(" Pixel organization:\t"); + for (i = var->bits_per_pixel - 1; i < var->bits_per_pixel; --i) { + if (var->red.offset <= i && var->red.offset + var->red.length > i) + printf("R"); + else if (var->green.offset <= i && var->green.offset + var->green.length > i) + printf("G"); + else if (var->blue.offset <= i && var->blue.offset + var->green.length > i) + printf("B"); + else if (var->transp.offset <= i && var->transp.offset + var->transp.length > i) + printf("A"); + } + printf("\n (%u bits per pixel)\t", var->bits_per_pixel); + for (i = var->bits_per_pixel - 1; i < var->bits_per_pixel; --i) { + if (var->red.offset <= i && + var->red.offset + var->red.length > i) + printf("%u", var->red.msb_right ? + var->red.offset + var->red.length - 1 - i : + i - var->red.offset); + else if (var->green.offset <= i && + var->green.offset + var->green.length > i) + printf("%u", var->green.msb_right ? + var->green.offset + var->green.length - 1 - i : + i - var->green.offset); + else if (var->blue.offset <= i && + var->blue.offset + var->green.length > i) + printf("%u", var->blue.msb_right ? + var->blue.offset + var->blue.length - 1 - i : + i - var->blue.offset); + else if (var->transp.offset <= i && + var->transp.offset + var->transp.length > i) + printf("%u", var->transp.msb_right ? + var->transp.offset + var->transp.length - 1 - i : + i - var->transp.offset); + } + printf("\n"); + } +} + +/* ----------------------------------------------------------------------------- + * Memory mapping + */ + +/* + * fb_map_memory - Map the frame buffer memory to userspace + * @dev: FB device + */ +static int fb_map_memory(struct device *dev) +{ + void *mem; + + mem = mmap(NULL, dev->fix_info.smem_len, PROT_READ | PROT_WRITE, + MAP_SHARED, dev->fd, 0); + if (mem == MAP_FAILED) { + printf("Error: FB memory map failed: %s (%d)\n", + strerror(errno), errno); + return -1; + } + + dev->mem = mem; + return 0; +} + +/* + * fb_unmap_memory - Unmap the frame buffer memory from userspace + * @dev: FB device + */ +static void fb_unmap_memory(struct device *dev) +{ + if (dev->mem == MAP_FAILED) + return; + + munmap(dev->mem, dev->fix_info.smem_len); +} + +/* ----------------------------------------------------------------------------- + * Open/close + */ + +/* + * fb_open - Open a frame buffer device + * @dev: FB device + * @devname: FB device node name and path + * + * Open the FB devide referenced by devname. Retrieve fixed and variable screen + * information, map the frame buffer memory and fill the dev structure. + */ +static int fb_open(struct device *dev, const char *devname) +{ + int ret; + + memset(dev, 0, sizeof *dev); + dev->fd = -1; + dev->mem = MAP_FAILED; + + dev->fd = open(devname, O_RDWR); + if (dev->fd < 0) { + printf("Error opening device %s: %d.\n", devname, errno); + return dev->fd; + } + + ret = ioctl(dev->fd, FBIOGET_FSCREENINFO, &dev->fix_info); + if (ret < 0) { + printf("Error opening device %s: unable to get fixed screen " + "info.\n", devname); + close(dev->fd); + return ret; + } + + ret = ioctl(dev->fd, FBIOGET_VSCREENINFO, &dev->var_info); + if (ret < 0) { + printf("Error opening device %s: unable to get variable screen " + "info.\n", devname); + close(dev->fd); + return ret; + } + + printf("Device %s opened: %s\n\n", devname, dev->fix_info.id); + fb_print_fix(dev, &dev->fix_info); + printf("\n"); + fb_print_var(dev, &dev->var_info); + printf("\n"); + + ret = fb_map_memory(dev); + if (ret < 0) { + close(dev->fd); + return ret; + } + + printf("FB memory mapped at %p\n", dev->mem); + return 0; +} + +/* + * fb_close - Close a frame buffer device + * @dev: FB device + * + * Close a frame buffer device previously opened by fb_open(). + */ +static void fb_close(struct device *dev) +{ + fb_unmap_memory(dev); + close(dev->fd); +} + +/* ----------------------------------------------------------------------------- + * Blanking and sync + */ + +/* + * fb_blank - Control screen blanking + * @dev: FB device + * @blank: Blanking state + * + * Set the frame buffer screen blanking state. Acceptable values for the blank + * parameter are + * + * FB_BLANK_UNBLANK Blanking off, screen active + * FB_BLANK_NORMAL Blanked, HSync on, VSync on + * FB_BLANK_VSYNC_SUSPEND Blanked, HSync on, VSync off + * FB_BLANK_HSYNC_SUSPEND Blanked, HSync off, VSync on + * FB_BLANK_POWERDOWN Blanked, HSync off, VSync off + */ +static int fb_blank(struct device *dev, int blank) +{ + int ret; + + ret = ioctl(dev->fd, FBIOBLANK, blank); + if (ret < 0) { + printf("Error: blank failed: %s (%d)\n", strerror(errno), errno); + return ret; + } + + return 0; +} + +/* + * fb_wait_for_vsync - Wait for vsync + * @dev: FB device + * @screen: Screen number + * + * Unblank the screen to make sure vsync events are generated and wait for 1000 + * 1000 vsync events on the given screen. Print the average refresh rate when + * done. + */ +static int fb_wait_for_vsync(struct device *dev, unsigned int screen) +{ + struct timespec start, end; + unsigned int i; + double fps; + int ret; + + /* Can't wait for vsync if the displayed is blanked. */ + fb_blank(dev, FB_BLANK_UNBLANK); + + printf("waiting for 1000 vsync events... "); + fflush(stdout); + + clock_gettime(CLOCK_MONOTONIC, &start); + + for (i = 0; i < 1000; ++i) { + ret = ioctl(dev->fd, FBIO_WAITFORVSYNC, &screen); + if (ret < 0) { + printf("\nError: wait for vsync failed: %s (%d)\n", + strerror(errno), errno); + return ret; + } + } + + clock_gettime(CLOCK_MONOTONIC, &end); + + end.tv_sec -= start.tv_sec; + end.tv_nsec -= start.tv_nsec; + if (end.tv_nsec < 0) { + end.tv_sec--; + end.tv_nsec += 1000000000; + } + + fps = i / (end.tv_sec + end.tv_nsec / 1000000000.); + + printf("done\n"); + printf("%u vsync interrupts in %lu.%06lu s, %f Hz\n", + i, end.tv_sec, end.tv_nsec / 1000, fps); + + return 0; +} + +/* ----------------------------------------------------------------------------- + * Resolution and pan + */ + +/* + * fb_set_format - Set the frame buffer pixel format + * @dev: FB device + * @bpp: Bits per pixel + */ +static int fb_set_format(struct device *dev, unsigned int bpp) +{ + struct fb_var_screeninfo var_info; + int ret; + + var_info = dev->var_info; + + var_info.bits_per_pixel = bpp; + var_info.activate = FB_ACTIVATE_NOW; + + ret = ioctl(dev->fd, FBIOPUT_VSCREENINFO, &var_info); + if (ret < 0) { + printf("Error: set format failed: %s (%d)\n", + strerror(errno), errno); + return ret; + } + + dev->var_info = var_info; + + printf("Format set to %u bits per pixel\n\n", + var_info.bits_per_pixel); + + fb_print_var(dev, &var_info); + + return 0; +} + +/* + * fb_set_resolution - Set the frame buffer real and virtual resolutions + * @dev: FB device + * @xres: Horizontal resolution + * @yres: Vertical resolution + * @xres_virtual: Horizontal virtual resolution + * @yres_virtual: Vertical virtual resolution + * + * Modify the real and virtual resolutions of the frame buffer to (xres, yres) + * and (xres_virtual, yres_virtual). The real or virtual resolution can be kept + * unchanged by setting its value to (-1, -1). + */ +static int fb_set_resolution(struct device *dev, int xres, int yres, + int xres_virtual, int yres_virtual) +{ + struct fb_var_screeninfo var_info; + int ret; + + var_info = dev->var_info; + + if (xres != -1 && yres != -1 ) { + var_info.xres = xres; + var_info.yres = yres; + } + + if (xres_virtual != -1 && yres_virtual != -1 ) { + var_info.xres_virtual = xres_virtual; + var_info.yres_virtual = yres_virtual; + } + + printf("Setting resolution to %ux%u (virtual %ux%u)\n", + var_info.xres, var_info.yres, + var_info.xres_virtual, var_info.yres_virtual); + + var_info.bits_per_pixel = 16; + var_info.activate = FB_ACTIVATE_NOW; + + ret = ioctl(dev->fd, FBIOPUT_VSCREENINFO, &var_info); + if (ret < 0) { + printf("Error: set resolution failed: %s (%d)\n", + strerror(errno), errno); + return ret; + } + + dev->var_info = var_info; + + printf("Resolution set to %ux%u (virtual %ux%u)\n\n", + var_info.xres, var_info.yres, + var_info.xres_virtual, var_info.yres_virtual); + + fb_print_var(dev, &var_info); + + return 0; +} + +/* + * fb_pan - Pan the display + * @dev: FB device + * @x: Horizontal offset + * @y: Vertical offset + * + * Pan the display to set the virtual point (x, y) on the top left corner of the + * screen. + */ +static int fb_pan(struct device *dev, unsigned int x, unsigned int y) +{ + struct fb_var_screeninfo var_info; + int ret; + + memset(&var_info, 0, sizeof var_info); + var_info.xoffset = x; + var_info.yoffset = y; + + ret = ioctl(dev->fd, FBIOPAN_DISPLAY, &var_info); + if (ret < 0) { + printf("Error: pan failed: %s (%d)\n", strerror(errno), errno); + return ret; + } + + dev->var_info.xoffset = var_info.xoffset; + dev->var_info.yoffset = var_info.yoffset; + + return 0; +} + +/* ----------------------------------------------------------------------------- + * Test pattern + */ + +#define FB_MAKE_COLOR(var, r, g, b) \ + ((((r) >> (8 - (var)->red.length)) << (var)->red.offset) | \ + (((g) >> (8 - (var)->green.length)) << (var)->green.offset) | \ + (((b) >> (8 - (var)->blue.length)) << (var)->blue.offset)) + +static void +fb_fill_rgb16(struct device *dev, unsigned int xoffset, unsigned int yoffset, + unsigned int xres, unsigned int yres) +{ + const uint16_t colors_top[] = { + FB_MAKE_COLOR(&dev->var_info, 192, 192, 192), /* grey */ + FB_MAKE_COLOR(&dev->var_info, 192, 192, 0), /* yellow */ + FB_MAKE_COLOR(&dev->var_info, 0, 192, 192), /* cyan */ + FB_MAKE_COLOR(&dev->var_info, 0, 192, 0), /* green */ + FB_MAKE_COLOR(&dev->var_info, 192, 0, 192), /* magenta */ + FB_MAKE_COLOR(&dev->var_info, 192, 0, 0), /* red */ + FB_MAKE_COLOR(&dev->var_info, 0, 0, 192), /* blue */ + }; + const uint16_t colors_middle[] = { + FB_MAKE_COLOR(&dev->var_info, 0, 0, 192), /* blue */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 192, 0, 192), /* magenta */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 0, 192, 192), /* cyan */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 192, 192, 192), /* grey */ + }; + const uint16_t colors_bottom[] = { + FB_MAKE_COLOR(&dev->var_info, 0, 33, 76), /* in-phase */ + FB_MAKE_COLOR(&dev->var_info, 255, 255, 255), /* super white */ + FB_MAKE_COLOR(&dev->var_info, 50, 0, 106), /* quadrature */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 9, 9, 9), /* 3.5% */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* 7.5% */ + FB_MAKE_COLOR(&dev->var_info, 29, 29, 29), /* 11.5% */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + }; + void *mem = dev->mem + dev->fix_info.line_length * yoffset + + xoffset * dev->var_info.bits_per_pixel / 8; + unsigned int x; + unsigned int y; + + for (y = 0; y < yres * 6 / 9; ++y) { + for (x = 0; x < xres; ++x) + ((uint16_t *)mem)[x] = colors_top[x * 7 / xres]; + mem += dev->fix_info.line_length; + } + + for (; y < yres * 7 / 9; ++y) { + for (x = 0; x < xres; ++x) + ((uint16_t *)mem)[x] = colors_middle[x * 7 / xres]; + mem += dev->fix_info.line_length; + } + + for (; y < yres; ++y) { + for (x = 0; x < xres * 5 / 7; ++x) + ((uint16_t *)mem)[x] = + colors_bottom[x * 4 / (xres * 5 / 7)]; + for (; x < xres * 6 / 7; ++x) + ((uint16_t *)mem)[x] = + colors_bottom[(x - xres * 5 / 7) * 3 + / (xres / 7) + 4]; + for (; x < xres; ++x) + ((uint16_t *)mem)[x] = colors_bottom[7]; + mem += dev->fix_info.line_length; + } +} + +struct fb_color24 { + unsigned int value:24; +} __attribute__((__packed__)); + +#define FB_MAKE_COLOR24(var, r, g, b) \ + { .value = FB_MAKE_COLOR(var, r, g, b) } + +static void +fb_fill_rgb24(struct device *dev, unsigned int xoffset, unsigned int yoffset, + unsigned int xres, unsigned int yres) +{ + const struct fb_color24 colors_top[] = { + FB_MAKE_COLOR24(&dev->var_info, 192, 192, 192), /* grey */ + FB_MAKE_COLOR24(&dev->var_info, 192, 192, 0), /* yellow */ + FB_MAKE_COLOR24(&dev->var_info, 0, 192, 192), /* cyan */ + FB_MAKE_COLOR24(&dev->var_info, 0, 192, 0), /* green */ + FB_MAKE_COLOR24(&dev->var_info, 192, 0, 192), /* magenta */ + FB_MAKE_COLOR24(&dev->var_info, 192, 0, 0), /* red */ + FB_MAKE_COLOR24(&dev->var_info, 0, 0, 192), /* blue */ + }; + const struct fb_color24 colors_middle[] = { + FB_MAKE_COLOR24(&dev->var_info, 0, 0, 192), /* blue */ + FB_MAKE_COLOR24(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR24(&dev->var_info, 192, 0, 192), /* magenta */ + FB_MAKE_COLOR24(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR24(&dev->var_info, 0, 192, 192), /* cyan */ + FB_MAKE_COLOR24(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR24(&dev->var_info, 192, 192, 192), /* grey */ + }; + const struct fb_color24 colors_bottom[] = { + FB_MAKE_COLOR24(&dev->var_info, 0, 33, 76), /* in-phase */ + FB_MAKE_COLOR24(&dev->var_info, 255, 255, 255), /* super white */ + FB_MAKE_COLOR24(&dev->var_info, 50, 0, 106), /* quadrature */ + FB_MAKE_COLOR24(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR24(&dev->var_info, 9, 9, 9), /* 3.5% */ + FB_MAKE_COLOR24(&dev->var_info, 19, 19, 19), /* 7.5% */ + FB_MAKE_COLOR24(&dev->var_info, 29, 29, 29), /* 11.5% */ + FB_MAKE_COLOR24(&dev->var_info, 19, 19, 19), /* black */ + }; + void *mem = dev->mem + dev->fix_info.line_length * yoffset + + xoffset * dev->var_info.bits_per_pixel / 8; + unsigned int x; + unsigned int y; + + for (y = 0; y < yres * 6 / 9; ++y) { + for (x = 0; x < xres; ++x) + ((struct fb_color24 *)mem)[x] = + colors_top[x * 7 / xres]; + mem += dev->fix_info.line_length; + } + + for (; y < yres * 7 / 9; ++y) { + for (x = 0; x < xres; ++x) + ((struct fb_color24 *)mem)[x] = + colors_middle[x * 7 / xres]; + mem += dev->fix_info.line_length; + } + + for (; y < yres; ++y) { + for (x = 0; x < xres * 5 / 7; ++x) + ((struct fb_color24 *)mem)[x] = + colors_bottom[x * 4 / (xres * 5 / 7)]; + for (; x < xres * 6 / 7; ++x) + ((struct fb_color24 *)mem)[x] = + colors_bottom[(x - xres * 5 / 7) * 3 + / (xres / 7) + 4]; + for (; x < xres; ++x) + ((struct fb_color24 *)mem)[x] = colors_bottom[7]; + mem += dev->fix_info.line_length; + } +} + +static void +fb_fill_rgb32(struct device *dev, unsigned int xoffset, unsigned int yoffset, + unsigned int xres, unsigned int yres) +{ + const uint32_t colors_top[] = { + FB_MAKE_COLOR(&dev->var_info, 192, 192, 192), /* grey */ + FB_MAKE_COLOR(&dev->var_info, 192, 192, 0), /* yellow */ + FB_MAKE_COLOR(&dev->var_info, 0, 192, 192), /* cyan */ + FB_MAKE_COLOR(&dev->var_info, 0, 192, 0), /* green */ + FB_MAKE_COLOR(&dev->var_info, 192, 0, 192), /* magenta */ + FB_MAKE_COLOR(&dev->var_info, 192, 0, 0), /* red */ + FB_MAKE_COLOR(&dev->var_info, 0, 0, 192), /* blue */ + }; + const uint32_t colors_middle[] = { + FB_MAKE_COLOR(&dev->var_info, 0, 0, 192), /* blue */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 192, 0, 192), /* magenta */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 0, 192, 192), /* cyan */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 192, 192, 192), /* grey */ + }; + const uint32_t colors_bottom[] = { + FB_MAKE_COLOR(&dev->var_info, 0, 33, 76), /* in-phase */ + FB_MAKE_COLOR(&dev->var_info, 255, 255, 255), /* super white */ + FB_MAKE_COLOR(&dev->var_info, 50, 0, 106), /* quadrature */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + FB_MAKE_COLOR(&dev->var_info, 9, 9, 9), /* 3.5% */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* 7.5% */ + FB_MAKE_COLOR(&dev->var_info, 29, 29, 29), /* 11.5% */ + FB_MAKE_COLOR(&dev->var_info, 19, 19, 19), /* black */ + }; + void *mem = dev->mem + dev->fix_info.line_length * yoffset + + xoffset * dev->var_info.bits_per_pixel / 8; + unsigned int x; + unsigned int y; + + for (y = 0; y < yres * 6 / 9; ++y) { + for (x = 0; x < xres; ++x) + ((uint32_t *)mem)[x] = colors_top[x * 7 / xres]; + mem += dev->fix_info.line_length; + } + + for (; y < yres * 7 / 9; ++y) { + for (x = 0; x < xres; ++x) + ((uint32_t *)mem)[x] = colors_middle[x * 7 / xres]; + mem += dev->fix_info.line_length; + } + + for (; y < yres; ++y) { + for (x = 0; x < xres * 5 / 7; ++x) + ((uint32_t *)mem)[x] = + colors_bottom[x * 4 / (xres * 5 / 7)]; + for (; x < xres * 6 / 7; ++x) + ((uint32_t *)mem)[x] = + colors_bottom[(x - xres * 5 / 7) * 3 + / (xres / 7) + 4]; + for (; x < xres; ++x) + ((uint32_t *)mem)[x] = colors_bottom[7]; + mem += dev->fix_info.line_length; + } +} + +/* + * fb_fill - Fill the frame buffer with an SMPTE test pattern + * @dev: FB device + * @mode: Fill mode + * + * Fill the display (when mode is FB_FILL_DISPLAY) or virtual frame buffer area + * (when mode is FB_FILL_VIRTUAL) with an SMPTE color bars pattern. Only RGB16, + * RGB24 and RGB32 on true color visuals are supported. + */ +static void fb_fill(struct device *dev, enum fb_fill_mode mode) +{ + unsigned int xoffset, yoffset; + unsigned int xres, yres; + + if (dev->fix_info.visual != FB_VISUAL_TRUECOLOR) { + printf("Error: test pattern is only supported for true color " + "visuals.\n"); + return; + } + + printf("Filling frame buffer with SMPTE test pattern\n"); + + if (mode == FB_FILL_DISPLAY) { + xoffset = dev->var_info.xoffset; + yoffset = dev->var_info.yoffset; + xres = dev->var_info.xres; + yres = dev->var_info.yres; + } else { + xoffset = 0; + yoffset = 0; + xres = dev->var_info.xres_virtual; + yres = dev->var_info.yres_virtual; + } + + switch (dev->var_info.bits_per_pixel) { + case 16: + return fb_fill_rgb16(dev, xoffset, yoffset, xres, yres); + case 24: + return fb_fill_rgb24(dev, xoffset, yoffset, xres, yres); + case 32: + return fb_fill_rgb32(dev, xoffset, yoffset, xres, yres); + default: + printf("Error: display depth %u bpp not supported.\n", + dev->var_info.bits_per_pixel); + break; + } +} + +/* ----------------------------------------------------------------------------- + * Main + */ + +static void usage(const char *argv0) +{ + printf("Usage: %s [options] device\n", argv0); + printf("Supported options:\n"); + printf("-b, --blank mode Set blanking mode\n"); + printf("-f, --fill[=mode] Fill the frame buffer with a test pattern\n"); + printf("-F, --format bpp Set the number of bits per pixel\n"); + printf("-h, --help Show this help screen\n"); + printf("-p, --pan x,y Pan the display to position (x,y)\n"); + printf("-r, --resolution wxh Set the display resolution to width x height\n"); + printf("-v, --virtual wxh Set the display virtual resolution to width x height\n"); + printf("-w, --wait-vsync[=screen] Wait for VSync on the given screen\n"); + printf("\n"); + printf("Support fill modes are:\n"); + printf("display Fill the displayed frame buffer only\n"); + printf("virtual Fill the whole virtual frame buffer\n"); + printf("Supported blanking modes are:\n"); + printf(" off Blanking off, screen active\n"); + printf(" on Blanked, HSync on, VSync on\n"); + printf(" vsync Blanked, HSync on, VSync off\n"); + printf(" hsync Blanked, HSync off, VSync on\n"); + printf(" powerdown Blanked, HSync off, VSync off\n"); +} + +static struct option opts[] = { + {"blank", 1, 0, 'b'}, + {"fill", 2, 0, 'f'}, + {"format", 1, 0, 'F'}, + {"help", 0, 0, 'h'}, + {"pan", 1, 0, 'p'}, + {"resolution", 1, 0, 'r'}, + {"virtual", 1, 0, 'v'}, + {"wait-vsync", 2, 0, 'w'}, + {0, 0, 0, 0} +}; + +static int fb_blank_parse(const char *arg, int *value) +{ + static const struct fb_value_name names[] = { + { FB_BLANK_UNBLANK, "off" }, + { FB_BLANK_NORMAL, "on" }, + { FB_BLANK_VSYNC_SUSPEND, "vsync" }, + { FB_BLANK_HSYNC_SUSPEND, "hsync" }, + { FB_BLANK_POWERDOWN, "powerdown" }, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(names); ++i) { + if (strcmp(names[i].name, arg) == 0) { + *value = names[i].value; + return 0; + } + } + + return -1; +} + +static int fb_point_parse(const char *arg, unsigned int *x, unsigned int *y) +{ + unsigned long value; + char *endptr; + + value = strtoul(arg, &endptr, 10); + if (endptr == arg || *endptr != ',') + return -1; + *x = value; + arg = endptr + 1; + + value = strtoul(arg, &endptr, 10); + if (endptr == arg || *endptr != '\0') + return -1; + *y = value; + + return 0; +} + +static int fb_size_parse(const char *arg, int *x, int *y) +{ + unsigned long value; + char *endptr; + + value = strtoul(arg, &endptr, 10); + if (endptr == arg || *endptr != 'x') + return -1; + *x = value; + arg = endptr + 1; + + value = strtoul(arg, &endptr, 10); + if (endptr == arg || *endptr != '\0') + return -1; + *y = value; + + return 0; +} + +int main(int argc, char *argv[]) +{ + struct device dev; + int ret; + + /* Options parsing. */ + bool do_blank = false; + int blank = 0; + + enum fb_fill_mode fill_mode = FB_FILL_NONE; + + bool do_format = false; + unsigned int bpp = 0; + + bool do_pan = false; + unsigned int pan_x = 0; + unsigned int pan_y = 0; + + bool do_resolution = false; + int xres = -1; + int yres = -1; + int xres_virtual = -1; + int yres_virtual = -1; + + bool do_wait_for_vsync = false; + unsigned int screen = 0; + + int c; + + opterr = 0; + while ((c = getopt_long(argc, argv, "b:f::F:hp:r:v:w::", opts, NULL)) != -1) { + + switch (c) { + case 'b': + do_blank = true; + if (fb_blank_parse(optarg, &blank) < 0) { + printf("Invalid blanking mode `%s'\n", optarg); + printf("Run %s -h for help.\n", argv[0]); + return 1; + } + break; + case 'f': + if (optarg == NULL) + fill_mode = FB_FILL_DISPLAY; + else if (strcmp(optarg, "display") == 0) + fill_mode = FB_FILL_DISPLAY; + else if (strcmp(optarg, "virtual") == 0) + fill_mode = FB_FILL_VIRTUAL; + else { + printf("Invalid fill mode `%s'\n", optarg); + printf("Run %s -h for help.\n", argv[0]); + return 1; + } + break; + case 'F': + do_format = true; + bpp = atoi(optarg); + break; + case 'h': + usage(argv[0]); + return 0; + case 'p': + do_pan = true; + if (fb_point_parse(optarg, &pan_x, &pan_y) < 0) { + printf("Invalid pan point `%s'\n", optarg); + printf("Run %s -h for help.\n", argv[0]); + return 1; + } + break; + case 'r': + do_resolution = true; + if (fb_size_parse(optarg, &xres, &yres) < 0) { + printf("Invalid resolution `%s'\n", optarg); + printf("Run %s -h for help.\n", argv[0]); + return 1; + } + break; + case 'v': + do_resolution = true; + if (fb_size_parse(optarg, &xres_virtual, &yres_virtual) < 0) { + printf("Invalid virtual resolution `%s'\n", optarg); + printf("Run %s -h for help.\n", argv[0]); + return 1; + } + break; + case 'w': + do_wait_for_vsync = true; + if (optarg) + screen = atoi(optarg); + break; + default: + printf("Invalid option -%c\n", c); + printf("Run %s -h for help.\n", argv[0]); + return 1; + } + } + + if (optind >= argc) { + usage(argv[0]); + return 1; + } + + ret = fb_open(&dev, argv[optind]); + if (ret < 0) + return 1; + + if (do_blank) + fb_blank(&dev, blank); + + if (do_format) + fb_set_format(&dev, bpp); + + if (do_resolution) + fb_set_resolution(&dev, xres, yres, xres_virtual, yres_virtual); + + if (fill_mode != FB_FILL_NONE) + fb_fill(&dev, fill_mode); + + if (do_pan) + fb_pan(&dev, pan_x, pan_y); + + if (do_wait_for_vsync) + fb_wait_for_vsync(&dev, screen); + + fb_close(&dev); + return 0; +} -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
