6  * SPDX-License-Identifier:	GPL-2.0+
12   If undefined, default video mode is set to 0x301
15   "videomode=301"   - 301 is a hexadecimal number describing the VESA
18 		      Colors	640x480 800x600 1024x768 1152x864 1280x1024
19 		     --------+---------------------------------------------
20 		      8 bits |	0x301	0x303	 0x305	  0x161	    0x307
21 		     15 bits |	0x310	0x313	 0x316	  0x162	    0x319
22 		     16 bits |	0x311	0x314	 0x317	  0x163	    0x31A
23 		     24 bits |	0x312	0x315	 0x318	    ?	    0x31B
24 		     --------+---------------------------------------------
26 		   - the parameters are parsed from the bootargs.
32 		      mode:0  640x480x24
36 		      mode:4  1152x864x16
40 		      mode:0 is assumed.
68 	{0x301, RES_MODE_640x480, 8},
69 	{0x310, RES_MODE_640x480, 15},
70 	{0x311, RES_MODE_640x480, 16},
71 	{0x312, RES_MODE_640x480, 24},
72 	{0x303, RES_MODE_800x600, 8},
73 	{0x313, RES_MODE_800x600, 15},
74 	{0x314, RES_MODE_800x600, 16},
75 	{0x315, RES_MODE_800x600, 24},
76 	{0x305, RES_MODE_1024x768, 8},
77 	{0x316, RES_MODE_1024x768, 15},
78 	{0x317, RES_MODE_1024x768, 16},
79 	{0x318, RES_MODE_1024x768, 24},
80 	{0x161, RES_MODE_1152x864, 8},
81 	{0x162, RES_MODE_1152x864, 15},
82 	{0x163, RES_MODE_1152x864, 16},
83 	{0x307, RES_MODE_1280x1024, 8},
84 	{0x319, RES_MODE_1280x1024, 15},
85 	{0x31A, RES_MODE_1280x1024, 16},
86 	{0x31B, RES_MODE_1280x1024, 24},
91 	{ 640,  480, 60, 39721,  25180,  40,  24, 32, 11,  96, 2, 0, FB_VMODE_NONINTERLACED},
92 	{ 800,  600, 60, 27778,  36000,  64,  24, 22,  1,  72, 2, 0, FB_VMODE_NONINTERLACED},
93 	{1024,  768, 60, 15384,  65000, 168,   8, 29,  3, 144, 4, 0, FB_VMODE_NONINTERLACED},
94 	{ 960,  720, 80, 13100,  76335, 160,  40, 32,  8,  80, 4, 0, FB_VMODE_NONINTERLACED},
95 	{1152,  864, 60, 12004,  83300, 200,  64, 32, 16,  80, 4, 0, FB_VMODE_NONINTERLACED},
96 	{1280, 1024, 60,  9090, 110000, 200,  48, 26,  1, 184, 3, 0, FB_VMODE_NONINTERLACED},
98 	{ 640,  480, 60, 39683,  25200,  48,  16, 33, 10,  96, 2, 0, FB_VMODE_NONINTERLACED},
100 	{1024,  768, 60, 15384,  65000, 160,  24, 29,  3, 136, 6, 0, FB_VMODE_NONINTERLACED},
101 	{ 960,  720, 75, 13468,  74250, 176,  72, 27,  1, 112, 2, 0, FB_VMODE_NONINTERLACED},
102 …{1152,  864, 75,  9259, 108000, 256,  64, 32,  1, 128, 3, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH…
106 	{1360,  768, 60, 11696,  85500, 256,  64, 17,  3, 112, 7, 0, FB_VMODE_NONINTERLACED},
120 	int i = 0;  in video_get_param_len()
121 	while ((*start != 0) && (*start != sep)) {  in video_get_param_len()
135 	for (i = 0; i < totallen; i++) {  in video_search_param()
136 		if (strncmp (p++, param, len) == 0)  in video_search_param()
139 	return -1;  in video_search_param()
145  * video=ctfb:x:800,xv:1280,y:600,yv:1024,depth:16,mode:0,pclk:25000,
146  *	 le:56,ri:48,up:26,lo:5,hs:152,vs:2,sync:0,vmode:0,accel:0
153 	if(strncmp(p,name,strlen(name))==0) {		\
161 	int i = 0;  in video_get_params()
177 	if (i >= 0) {  in video_get_params()
183 	mode = 0;		/* default */  in video_get_params()
185 	while ((i = video_get_param_len (p, ',')) != 0) {  in video_get_params()
188 		if (*p != 0)  in video_get_params()
193 		mode = 0;  in video_get_params()
196 	bpp = 24 - ((mode % 3) * 8);  in video_get_params()
199 	while ((i = video_get_param_len (p, ',')) != 0) {  in video_get_params()
200 		GET_OPTION ("x:", pPar->xres)  in video_get_params()
201 			GET_OPTION ("y:", pPar->yres)  in video_get_params()
202 			GET_OPTION ("refresh:", pPar->refresh)  in video_get_params()
203 			GET_OPTION ("le:", pPar->left_margin)  in video_get_params()
204 			GET_OPTION ("ri:", pPar->right_margin)  in video_get_params()
205 			GET_OPTION ("up:", pPar->upper_margin)  in video_get_params()
206 			GET_OPTION ("lo:", pPar->lower_margin)  in video_get_params()
207 			GET_OPTION ("hs:", pPar->hsync_len)  in video_get_params()
208 			GET_OPTION ("vs:", pPar->vsync_len)  in video_get_params()
209 			GET_OPTION ("sync:", pPar->sync)  in video_get_params()
210 			GET_OPTION ("vmode:", pPar->vmode)  in video_get_params()
211 			GET_OPTION ("pclk:", pPar->pixclock)  in video_get_params()
212 			GET_OPTION ("pclk_khz:", pPar->pixclock_khz)  in video_get_params()
215 		if (*p != 0)  in video_get_params()
222  * Parse the 'video-mode' environment variable
224  * Example: "video-mode=fslfb:1280x1024-32@60,monitor=dvi".  See
227  * @xres: returned value of X-resolution
228  * @yres: returned value of Y-resolution
233  * Returns 1 if valid values were found, 0 otherwise
238 	char *p = env_get("video-mode");  in video_get_video_mode()
240 		return 0;  in video_get_video_mode()
245 		return 0;  in video_get_video_mode()
247 	/* Get the X-resolution*/  in video_get_video_mode()
252 		return 0;  in video_get_video_mode()
254 	/* Get the Y-resolution */  in video_get_video_mode()
259 		return 0;  in video_get_video_mode()
266 		return 0;  in video_get_video_mode()
273 		return 0;  in video_get_video_mode()
283  * Parse the 'video-mode' environment variable using video_get_video_mode()
287  *   when 'video-mode' is not set or does not contain a valid mode
288  * @default_depth: depth to set when 'video-mode' is not set
307 	for (i = 0; i < RES_MODES_COUNT; i++) {  in video_get_ctfb_res_modes()
317 	printf("video-mode %dx%d-%d@%d not available, falling back to %dx%d-%d@%d\n",  in video_get_ctfb_res_modes()
318 	       xres, yres, depth, refresh, (*mode_ret)->xres,  in video_get_ctfb_res_modes()
319 	       (*mode_ret)->yres, *depth_ret, (*mode_ret)->refresh);  in video_get_ctfb_res_modes()
339 	while (p && (i = video_get_param_len(p, ',')) != 0) {  in video_get_option_string()
340 		if (strncmp(p, name, name_len) == 0 && p[name_len] == '=') {  in video_get_option_string()
341 			len = i - (name_len + 1);  in video_get_option_string()
343 				len = dest_len - 1;  in video_get_option_string()
345 			dest[len] = 0;  in video_get_option_string()
349 		if (*p != 0)  in video_get_option_string()
369 	while (p && (i = video_get_param_len(p, ',')) != 0) {  in video_get_option_int()
370 		if (strncmp(p, name, name_len) == 0 && p[name_len] == '=')  in video_get_option_int()
374 		if (*p != 0)  in video_get_option_int()
386  * @return 0 on success, or a negative errno on error
393 	/* Check all timings are non 0 */  in video_edid_dtd_to_ctfb_res_modes()
394 	if (EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
395 	    EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
396 	    EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
397 	    EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
398 	    EDID_DETAILED_TIMING_VERTICAL_BLANKING(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
399 	    EDID_DETAILED_TIMING_HSYNC_OFFSET(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
400 	    EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
401 	    EDID_DETAILED_TIMING_VSYNC_OFFSET(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
402 	    EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(*t) == 0 ||  in video_edid_dtd_to_ctfb_res_modes()
404 	    EDID_DETAILED_TIMING_FLAG_STEREO(*t) != 0)  in video_edid_dtd_to_ctfb_res_modes()
405 		return -EINVAL;  in video_edid_dtd_to_ctfb_res_modes()
407 	mode->xres = EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*t);  in video_edid_dtd_to_ctfb_res_modes()
408 	mode->yres = EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*t);  in video_edid_dtd_to_ctfb_res_modes()
410 	h_total = mode->xres + EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*t);  in video_edid_dtd_to_ctfb_res_modes()
411 	v_total = mode->yres + EDID_DETAILED_TIMING_VERTICAL_BLANKING(*t);  in video_edid_dtd_to_ctfb_res_modes()
412 	mode->refresh = EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) /  in video_edid_dtd_to_ctfb_res_modes()
415 	mode->pixclock_khz = EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) / 1000;  in video_edid_dtd_to_ctfb_res_modes()
416 	mode->pixclock = 1000000000L / mode->pixclock_khz;  in video_edid_dtd_to_ctfb_res_modes()
418 	mode->right_margin = EDID_DETAILED_TIMING_HSYNC_OFFSET(*t);  in video_edid_dtd_to_ctfb_res_modes()
419 	mode->hsync_len = EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(*t);  in video_edid_dtd_to_ctfb_res_modes()
420 	margin = EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*t) -  in video_edid_dtd_to_ctfb_res_modes()
421 			(mode->right_margin + mode->hsync_len);  in video_edid_dtd_to_ctfb_res_modes()
422 	if (margin <= 0)  in video_edid_dtd_to_ctfb_res_modes()
423 		return -EINVAL;  in video_edid_dtd_to_ctfb_res_modes()
425 	mode->left_margin = margin;  in video_edid_dtd_to_ctfb_res_modes()
427 	mode->lower_margin = EDID_DETAILED_TIMING_VSYNC_OFFSET(*t);  in video_edid_dtd_to_ctfb_res_modes()
428 	mode->vsync_len = EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(*t);  in video_edid_dtd_to_ctfb_res_modes()
429 	margin = EDID_DETAILED_TIMING_VERTICAL_BLANKING(*t) -  in video_edid_dtd_to_ctfb_res_modes()
430 			(mode->lower_margin + mode->vsync_len);  in video_edid_dtd_to_ctfb_res_modes()
431 	if (margin <= 0)  in video_edid_dtd_to_ctfb_res_modes()
432 		return -EINVAL;  in video_edid_dtd_to_ctfb_res_modes()
434 	mode->upper_margin = margin;  in video_edid_dtd_to_ctfb_res_modes()
436 	mode->sync = 0;  in video_edid_dtd_to_ctfb_res_modes()
438 		mode->sync |= FB_SYNC_HOR_HIGH_ACT;  in video_edid_dtd_to_ctfb_res_modes()
440 		mode->sync |= FB_SYNC_VERT_HIGH_ACT;  in video_edid_dtd_to_ctfb_res_modes()
443 		mode->vmode = FB_VMODE_INTERLACED;  in video_edid_dtd_to_ctfb_res_modes()
445 		mode->vmode = FB_VMODE_NONINTERLACED;  in video_edid_dtd_to_ctfb_res_modes()
447 	return 0;  in video_edid_dtd_to_ctfb_res_modes()