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https://github.com/sheumann/hush.git
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fbset: add possibility to set timing and sync polarity
function old new delta copy_changed_values - 48 +48 copy_if_gt0 - 27 +27 fbset_main 1268 1235 -33 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 0/1 up/down: 75/-33) Total: 42 bytes Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Michael Grzeschik
Denys Vlasenko
parent
9882b34fe2
commit
24dc9ab2f4
@ -17,52 +17,13 @@
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#define DEFAULTFBDEV FB_0
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#define DEFAULTFBMODE "/etc/fb.modes"
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enum {
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CMD_FB = 1,
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CMD_DB = 2,
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CMD_GEOMETRY = 3,
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CMD_TIMING = 4,
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CMD_ACCEL = 5,
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CMD_HSYNC = 6,
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CMD_VSYNC = 7,
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CMD_LACED = 8,
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CMD_DOUBLE = 9,
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/* CMD_XCOMPAT = 10, */
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CMD_ALL = 11,
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CMD_INFO = 12,
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CMD_SHOW = 13,
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CMD_CHANGE = 14,
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#if ENABLE_FEATURE_FBSET_FANCY
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CMD_XRES = 100,
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CMD_YRES = 101,
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CMD_VXRES = 102,
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CMD_VYRES = 103,
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CMD_DEPTH = 104,
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CMD_MATCH = 105,
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CMD_PIXCLOCK = 106,
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CMD_LEFT = 107,
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CMD_RIGHT = 108,
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CMD_UPPER = 109,
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CMD_LOWER = 110,
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CMD_HSLEN = 111,
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CMD_VSLEN = 112,
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CMD_CSYNC = 113,
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CMD_GSYNC = 114,
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CMD_EXTSYNC = 115,
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CMD_BCAST = 116,
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CMD_RGBA = 117,
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CMD_STEP = 118,
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CMD_MOVE = 119,
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#endif
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};
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/* Stuff stolen from the kernel's fb.h */
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#define FB_ACTIVATE_ALL 64
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enum {
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FBIOGET_VSCREENINFO = 0x4600,
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FBIOPUT_VSCREENINFO = 0x4601
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};
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struct fb_bitfield {
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uint32_t offset; /* beginning of bitfield */
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uint32_t length; /* length of bitfield */
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@ -106,6 +67,81 @@ struct fb_var_screeninfo {
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uint32_t reserved[6]; /* Reserved for future compatibility */
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};
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static void copy_if_gt0(uint32_t *src, uint32_t *dst, unsigned cnt)
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{
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do {
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if ((int32_t) *src > 0)
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*dst = *src;
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src++;
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dst++;
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} while (--cnt);
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}
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static NOINLINE void copy_changed_values(
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struct fb_var_screeninfo *base,
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struct fb_var_screeninfo *set)
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{
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//if ((int32_t) set->xres > 0) base->xres = set->xres;
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//if ((int32_t) set->yres > 0) base->yres = set->yres;
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//if ((int32_t) set->xres_virtual > 0) base->xres_virtual = set->xres_virtual;
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//if ((int32_t) set->yres_virtual > 0) base->yres_virtual = set->yres_virtual;
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copy_if_gt0(&set->xres, &base->xres, 4);
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if ((int32_t) set->bits_per_pixel > 0) base->bits_per_pixel = set->bits_per_pixel;
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//copy_if_gt0(&set->bits_per_pixel, &base->bits_per_pixel, 1);
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//if ((int32_t) set->pixclock > 0) base->pixclock = set->pixclock;
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//if ((int32_t) set->left_margin > 0) base->left_margin = set->left_margin;
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//if ((int32_t) set->right_margin > 0) base->right_margin = set->right_margin;
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//if ((int32_t) set->upper_margin > 0) base->upper_margin = set->upper_margin;
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//if ((int32_t) set->lower_margin > 0) base->lower_margin = set->lower_margin;
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//if ((int32_t) set->hsync_len > 0) base->hsync_len = set->hsync_len;
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//if ((int32_t) set->vsync_len > 0) base->vsync_len = set->vsync_len;
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//if ((int32_t) set->sync > 0) base->sync = set->sync;
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//if ((int32_t) set->vmode > 0) base->vmode = set->vmode;
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copy_if_gt0(&set->pixclock, &base->pixclock, 9);
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}
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enum {
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CMD_FB = 1,
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CMD_DB = 2,
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CMD_GEOMETRY = 3,
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CMD_TIMING = 4,
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CMD_ACCEL = 5,
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CMD_HSYNC = 6,
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CMD_VSYNC = 7,
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CMD_LACED = 8,
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CMD_DOUBLE = 9,
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/* CMD_XCOMPAT = 10, */
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CMD_ALL = 11,
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CMD_INFO = 12,
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CMD_SHOW = 13,
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CMD_CHANGE = 14,
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#if ENABLE_FEATURE_FBSET_FANCY
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CMD_XRES = 100,
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CMD_YRES = 101,
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CMD_VXRES = 102,
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CMD_VYRES = 103,
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CMD_DEPTH = 104,
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CMD_MATCH = 105,
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CMD_PIXCLOCK = 106,
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CMD_LEFT = 107,
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CMD_RIGHT = 108,
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CMD_UPPER = 109,
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CMD_LOWER = 110,
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CMD_HSLEN = 111,
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CMD_VSLEN = 112,
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CMD_CSYNC = 113,
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CMD_GSYNC = 114,
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CMD_EXTSYNC = 115,
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CMD_BCAST = 116,
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CMD_RGBA = 117,
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CMD_STEP = 118,
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CMD_MOVE = 119,
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#endif
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};
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static const struct cmdoptions_t {
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const char name[9];
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@ -174,6 +210,16 @@ static void ss(uint32_t *x, uint32_t flag, char *buf, const char *what)
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*x |= flag;
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}
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/* Mode db file contains mode definitions like this:
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* mode "800x600-48-lace"
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* # D: 36.00 MHz, H: 33.835 kHz, V: 96.39 Hz
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* geometry 800 600 800 600 8
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* timings 27778 56 80 79 11 128 12
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* laced true
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* hsync high
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* vsync high
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* endmode
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*/
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static int read_mode_db(struct fb_var_screeninfo *base, const char *fn,
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const char *mode)
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{
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@ -214,19 +260,52 @@ static int read_mode_db(struct fb_var_screeninfo *base, const char *fn,
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token[0]);
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switch (i) {
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case 0:
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/* FIXME: catastrophic on arches with 64bit ints */
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if (sizeof(int) == sizeof(base->xres)) {
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sscanf(p, "%d %d %d %d %d",
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&(base->xres), &(base->yres),
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&(base->xres_virtual), &(base->yres_virtual),
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&(base->bits_per_pixel));
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&base->xres, &base->yres,
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&base->xres_virtual, &base->yres_virtual,
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&base->bits_per_pixel);
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} else {
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int base_xres, base_yres;
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int base_xres_virtual, base_yres_virtual;
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int base_bits_per_pixel;
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sscanf(p, "%d %d %d %d %d",
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&base_xres, &base_yres,
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&base_xres_virtual, &base_yres_virtual,
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&base_bits_per_pixel);
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base->xres = base_xres;
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base->yres = base_yres;
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base->xres_virtual = base_xres_virtual;
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base->yres_virtual = base_yres_virtual;
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base->bits_per_pixel = base_bits_per_pixel;
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}
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//bb_info_msg("GEO[%s]", p);
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break;
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case 1:
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if (sizeof(int) == sizeof(base->xres)) {
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sscanf(p, "%d %d %d %d %d %d %d",
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&(base->pixclock),
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&(base->left_margin), &(base->right_margin),
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&(base->upper_margin), &(base->lower_margin),
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&(base->hsync_len), &(base->vsync_len));
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&base->pixclock,
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&base->left_margin, &base->right_margin,
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&base->upper_margin, &base->lower_margin,
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&base->hsync_len, &base->vsync_len);
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} else {
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int base_pixclock;
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int base_left_margin, base_right_margin;
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int base_upper_margin, base_lower_margin;
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int base_hsync_len, base_vsync_len;
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sscanf(p, "%d %d %d %d %d %d %d",
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&base_pixclock,
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&base_left_margin, &base_right_margin,
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&base_upper_margin, &base_lower_margin,
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&base_hsync_len, &base_vsync_len);
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base->pixclock = base_pixclock;
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base->left_margin = base_left_margin;
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base->right_margin = base_right_margin;
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base->upper_margin = base_upper_margin;
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base->lower_margin = base_lower_margin;
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base->hsync_len = base_hsync_len;
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base->vsync_len = base_vsync_len;
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}
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//bb_info_msg("TIM[%s]", p);
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break;
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case 2:
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@ -254,21 +333,6 @@ static int read_mode_db(struct fb_var_screeninfo *base, const char *fn,
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}
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#endif
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static void setfbmode(struct fb_var_screeninfo *base,
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struct fb_var_screeninfo *set)
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{
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if ((int32_t) set->xres > 0)
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base->xres = set->xres;
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if ((int32_t) set->yres > 0)
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base->yres = set->yres;
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if ((int32_t) set->xres_virtual > 0)
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base->xres_virtual = set->xres_virtual;
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if ((int32_t) set->yres_virtual > 0)
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base->yres_virtual = set->yres_virtual;
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if ((int32_t) set->bits_per_pixel > 0)
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base->bits_per_pixel = set->bits_per_pixel;
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}
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static NOINLINE void showmode(struct fb_var_screeninfo *v)
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{
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double drate = 0, hrate = 0, vrate = 0;
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@ -308,15 +372,16 @@ int fbset_main(int argc, char **argv)
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OPT_READMODE = (1 << 2),
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OPT_ALL = (1 << 9),
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};
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struct fb_var_screeninfo var, varset;
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struct fb_var_screeninfo var_old, var_set;
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int fh, i;
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unsigned options = 0;
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const char *fbdev = DEFAULTFBDEV;
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const char *modefile = DEFAULTFBMODE;
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char *thisarg, *mode = NULL;
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char *thisarg;
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char *mode = mode; /* for compiler */
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memset(&varset, 0xff, sizeof(varset));
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memset(&var_set, 0xff, sizeof(var_set)); /* set all to -1 */
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/* parse cmd args.... why do they have to make things so difficult? */
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argv++;
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@ -342,30 +407,38 @@ int fbset_main(int argc, char **argv)
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options |= OPT_SHOW;
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break;
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case CMD_GEOMETRY:
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varset.xres = xatou32(argv[1]);
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varset.yres = xatou32(argv[2]);
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varset.xres_virtual = xatou32(argv[3]);
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varset.yres_virtual = xatou32(argv[4]);
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varset.bits_per_pixel = xatou32(argv[5]);
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var_set.xres = xatou32(argv[1]);
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var_set.yres = xatou32(argv[2]);
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var_set.xres_virtual = xatou32(argv[3]);
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var_set.yres_virtual = xatou32(argv[4]);
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var_set.bits_per_pixel = xatou32(argv[5]);
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break;
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case CMD_TIMING:
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varset.pixclock = xatou32(argv[1]);
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varset.left_margin = xatou32(argv[2]);
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varset.right_margin = xatou32(argv[3]);
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varset.upper_margin = xatou32(argv[4]);
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varset.lower_margin = xatou32(argv[5]);
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varset.hsync_len = xatou32(argv[6]);
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varset.vsync_len = xatou32(argv[7]);
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var_set.pixclock = xatou32(argv[1]);
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var_set.left_margin = xatou32(argv[2]);
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var_set.right_margin = xatou32(argv[3]);
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var_set.upper_margin = xatou32(argv[4]);
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var_set.lower_margin = xatou32(argv[5]);
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var_set.hsync_len = xatou32(argv[6]);
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var_set.vsync_len = xatou32(argv[7]);
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break;
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case CMD_ACCEL:
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break;
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case CMD_HSYNC:
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var_set.sync |= FB_SYNC_HOR_HIGH_ACT;
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break;
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case CMD_VSYNC:
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var_set.sync |= FB_SYNC_VERT_HIGH_ACT;
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break;
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#if ENABLE_FEATURE_FBSET_FANCY
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case CMD_XRES:
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varset.xres = xatou32(argv[1]);
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var_set.xres = xatou32(argv[1]);
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break;
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case CMD_YRES:
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varset.yres = xatou32(argv[1]);
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var_set.yres = xatou32(argv[1]);
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break;
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case CMD_DEPTH:
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varset.bits_per_pixel = xatou32(argv[1]);
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var_set.bits_per_pixel = xatou32(argv[1]);
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break;
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#endif
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}
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@ -376,13 +449,14 @@ int fbset_main(int argc, char **argv)
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case CMD_SHOW:
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break;
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default:
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options |= OPT_CHANGE; /* the other commands imply changes */
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/* other commands imply changes */
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options |= OPT_CHANGE;
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}
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argc -= g_cmdoptions[i].param_count;
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argv += g_cmdoptions[i].param_count;
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goto contin;
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}
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if (argc != 1)
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if (!ENABLE_FEATURE_FBSET_READMODE || argc != 1)
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bb_show_usage();
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mode = *argv;
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options |= OPT_READMODE;
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@ -390,27 +464,28 @@ int fbset_main(int argc, char **argv)
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}
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fh = xopen(fbdev, O_RDONLY);
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xioctl(fh, FBIOGET_VSCREENINFO, &var);
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xioctl(fh, FBIOGET_VSCREENINFO, &var_old);
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if (options & OPT_READMODE) {
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#if !ENABLE_FEATURE_FBSET_READMODE
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bb_show_usage();
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#else
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if (!read_mode_db(&var, modefile, mode)) {
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#if ENABLE_FEATURE_FBSET_READMODE
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if (!read_mode_db(&var_old, modefile, mode)) {
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bb_error_msg_and_die("unknown video mode '%s'", mode);
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}
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#endif
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}
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if (options & OPT_CHANGE) {
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setfbmode(&var, &varset);
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copy_changed_values(&var_old, &var_set);
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if (options & OPT_ALL)
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var.activate = FB_ACTIVATE_ALL;
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xioctl(fh, FBIOPUT_VSCREENINFO, &var);
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var_old.activate = FB_ACTIVATE_ALL;
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xioctl(fh, FBIOPUT_VSCREENINFO, &var_old);
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}
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if (options == 0 || options & OPT_SHOW)
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showmode(&var);
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/* Don't close the file, as exiting will take care of that */
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/* close(fh); */
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if (options == 0 || (options & OPT_SHOW))
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showmode(&var_old);
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if (ENABLE_FEATURE_CLEAN_UP)
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close(fh);
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return EXIT_SUCCESS;
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}
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