[people/ms/u-boot.git] / common / edid.c

/*
 * Copyright (c) 2012 The Chromium OS Authors.
 *
 * (C) Copyright 2010
 * Petr Stetiar <ynezz@true.cz>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 * Contains stolen code from ddcprobe project which is:
 * Copyright (C) Nalin Dahyabhai <bigfun@pobox.com>
 */

#include <common.h>
#include <edid.h>
#include <errno.h>
#include <linux/ctype.h>
#include <linux/string.h>

int edid_check_info(struct edid1_info *edid_info)
{
	if ((edid_info == NULL) || (edid_info->version == 0))
		return -1;

	if (memcmp(edid_info->header, "\x0\xff\xff\xff\xff\xff\xff\x0", 8))
		return -1;

	if (edid_info->version == 0xff && edid_info->revision == 0xff)
		return -1;

	return 0;
}

int edid_check_checksum(u8 *edid_block)
{
	u8 checksum = 0;
	int i;

	for (i = 0; i < 128; i++)
		checksum += edid_block[i];

	return (checksum == 0) ? 0 : -EINVAL;
}

int edid_get_ranges(struct edid1_info *edid, unsigned int *hmin,
		    unsigned int *hmax, unsigned int *vmin,
		    unsigned int *vmax)
{
	int i;
	struct edid_monitor_descriptor *monitor;

	*hmin = *hmax = *vmin = *vmax = 0;
	if (edid_check_info(edid))
		return -1;

	for (i = 0; i < ARRAY_SIZE(edid->monitor_details.descriptor); i++) {
		monitor = &edid->monitor_details.descriptor[i];
		if (monitor->type == EDID_MONITOR_DESCRIPTOR_RANGE) {
			*hmin = monitor->data.range_data.horizontal_min;
			*hmax = monitor->data.range_data.horizontal_max;
			*vmin = monitor->data.range_data.vertical_min;
			*vmax = monitor->data.range_data.vertical_max;
			return 0;
		}
	}
	return -1;
}

/**
 * Snip the tailing whitespace/return of a string.
 *
 * @param string	The string to be snipped
 * @return the snipped string
 */
static char *snip(char *string)
{
	char *s;

	/*
	 * This is always a 13 character buffer
	 * and it's not always terminated.
	 */
	string[12] = '\0';
	s = &string[strlen(string) - 1];

	while (s >= string && (isspace(*s) || *s == '\n' || *s == '\r' ||
			*s == '\0'))
		*(s--) = '\0';

	return string;
}

/**
 * Print an EDID monitor descriptor block
 *
 * @param monitor	The EDID monitor descriptor block
 * @have_timing		Modifies to 1 if the desciptor contains timing info
 */
static void edid_print_dtd(struct edid_monitor_descriptor *monitor,
			   unsigned int *have_timing)
{
	unsigned char *bytes = (unsigned char *)monitor;
	struct edid_detailed_timing *timing =
			(struct edid_detailed_timing *)monitor;

	if (bytes[0] == 0 && bytes[1] == 0) {
		if (monitor->type == EDID_MONITOR_DESCRIPTOR_SERIAL)
			printf("Monitor serial number: %s\n",
			       snip(monitor->data.string));
		else if (monitor->type == EDID_MONITOR_DESCRIPTOR_ASCII)
			printf("Monitor ID: %s\n",
			       snip(monitor->data.string));
		else if (monitor->type == EDID_MONITOR_DESCRIPTOR_NAME)
			printf("Monitor name: %s\n",
			       snip(monitor->data.string));
		else if (monitor->type == EDID_MONITOR_DESCRIPTOR_RANGE)
			printf("Monitor range limits, horizontal sync: "
			       "%d-%d kHz, vertical refresh: "
			       "%d-%d Hz, max pixel clock: "
			       "%d MHz\n",
			       monitor->data.range_data.horizontal_min,
			       monitor->data.range_data.horizontal_max,
			       monitor->data.range_data.vertical_min,
			       monitor->data.range_data.vertical_max,
			       monitor->data.range_data.pixel_clock_max * 10);
	} else {
		uint32_t pixclock, h_active, h_blanking, v_active, v_blanking;
		uint32_t h_total, v_total, vfreq;

		pixclock = EDID_DETAILED_TIMING_PIXEL_CLOCK(*timing);
		h_active = EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*timing);
		h_blanking = EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*timing);
		v_active = EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*timing);
		v_blanking = EDID_DETAILED_TIMING_VERTICAL_BLANKING(*timing);

		h_total = h_active + h_blanking;
		v_total = v_active + v_blanking;
		if (v_total * h_total)
			vfreq = pixclock / (v_total * h_total);
		else
			vfreq = 1; /* Error case */
		printf("\t%dx%d\%c\t%d Hz (detailed)\n", h_active,
		       v_active, h_active > 1000 ? ' ' : '\t', vfreq);
		*have_timing = 1;
	}
}

/**
 * Get the manufacturer name from an EDID info.
 *
 * @param edid_info     The EDID info to be printed
 * @param name		Returns the string of the manufacturer name
 */
static void edid_get_manufacturer_name(struct edid1_info *edid, char *name)
{
	name[0] = EDID1_INFO_MANUFACTURER_NAME_CHAR1(*edid) + 'A' - 1;
	name[1] = EDID1_INFO_MANUFACTURER_NAME_CHAR2(*edid) + 'A' - 1;
	name[2] = EDID1_INFO_MANUFACTURER_NAME_CHAR3(*edid) + 'A' - 1;
	name[3] = '\0';
}

void edid_print_info(struct edid1_info *edid_info)
{
	int i;
	char manufacturer[4];
	unsigned int have_timing = 0;
	uint32_t serial_number;

	if (edid_check_info(edid_info)) {
		printf("Not a valid EDID\n");
		return;
	}

	printf("EDID version: %d.%d\n",
	       edid_info->version, edid_info->revision);

	printf("Product ID code: %04x\n", EDID1_INFO_PRODUCT_CODE(*edid_info));

	edid_get_manufacturer_name(edid_info, manufacturer);
	printf("Manufacturer: %s\n", manufacturer);

	serial_number = EDID1_INFO_SERIAL_NUMBER(*edid_info);
	if (serial_number != 0xffffffff) {
		if (strcmp(manufacturer, "MAG") == 0)
			serial_number -= 0x7000000;
		if (strcmp(manufacturer, "OQI") == 0)
			serial_number -= 456150000;
		if (strcmp(manufacturer, "VSC") == 0)
			serial_number -= 640000000;
	}
	printf("Serial number: %08x\n", serial_number);
	printf("Manufactured in week: %d year: %d\n",
	       edid_info->week, edid_info->year + 1990);

	printf("Video input definition: %svoltage level %d%s%s%s%s%s\n",
	       EDID1_INFO_VIDEO_INPUT_DIGITAL(*edid_info) ?
	       "digital signal, " : "analog signal, ",
	       EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(*edid_info),
	       EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(*edid_info) ?
	       ", blank to black" : "",
	       EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(*edid_info) ?
	       ", separate sync" : "",
	       EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(*edid_info) ?
	       ", composite sync" : "",
	       EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(*edid_info) ?
	       ", sync on green" : "",
	       EDID1_INFO_VIDEO_INPUT_SERRATION_V(*edid_info) ?
	       ", serration v" : "");

	printf("Monitor is %s\n",
	       EDID1_INFO_FEATURE_RGB(*edid_info) ? "RGB" : "non-RGB");

	printf("Maximum visible display size: %d cm x %d cm\n",
	       edid_info->max_size_horizontal,
	       edid_info->max_size_vertical);

	printf("Power management features: %s%s, %s%s, %s%s\n",
	       EDID1_INFO_FEATURE_ACTIVE_OFF(*edid_info) ?
	       "" : "no ", "active off",
	       EDID1_INFO_FEATURE_SUSPEND(*edid_info) ? "" : "no ", "suspend",
	       EDID1_INFO_FEATURE_STANDBY(*edid_info) ? "" : "no ", "standby");

	printf("Estabilished timings:\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_720X400_70(*edid_info))
		printf("\t720x400\t\t70 Hz (VGA 640x400, IBM)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_720X400_88(*edid_info))
		printf("\t720x400\t\t88 Hz (XGA2)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_60(*edid_info))
		printf("\t640x480\t\t60 Hz (VGA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_67(*edid_info))
		printf("\t640x480\t\t67 Hz (Mac II, Apple)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_72(*edid_info))
		printf("\t640x480\t\t72 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_75(*edid_info))
		printf("\t640x480\t\t75 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_56(*edid_info))
		printf("\t800x600\t\t56 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_60(*edid_info))
		printf("\t800x600\t\t60 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_72(*edid_info))
		printf("\t800x600\t\t72 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_75(*edid_info))
		printf("\t800x600\t\t75 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_832X624_75(*edid_info))
		printf("\t832x624\t\t75 Hz (Mac II)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(*edid_info))
		printf("\t1024x768\t87 Hz Interlaced (8514A)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(*edid_info))
		printf("\t1024x768\t60 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(*edid_info))
		printf("\t1024x768\t70 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(*edid_info))
		printf("\t1024x768\t75 Hz (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(*edid_info))
		printf("\t1280x1024\t75 (VESA)\n");
	if (EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(*edid_info))
		printf("\t1152x870\t75 (Mac II)\n");

	/* Standard timings. */
	printf("Standard timings:\n");
	for (i = 0; i < ARRAY_SIZE(edid_info->standard_timings); i++) {
		unsigned int aspect = 10000;
		unsigned int x, y;
		unsigned char xres, vfreq;

		xres = EDID1_INFO_STANDARD_TIMING_XRESOLUTION(*edid_info, i);
		vfreq = EDID1_INFO_STANDARD_TIMING_VFREQ(*edid_info, i);
		if ((xres != vfreq) ||
		    ((xres != 0) && (xres != 1)) ||
		    ((vfreq != 0) && (vfreq != 1))) {
			switch (EDID1_INFO_STANDARD_TIMING_ASPECT(*edid_info,
					i)) {
			case ASPECT_625:
				aspect = 6250;
				break;
			case ASPECT_75:
				aspect = 7500;
				break;
			case ASPECT_8:
				aspect = 8000;
				break;
			case ASPECT_5625:
				aspect = 5625;
				break;
			}
			x = (xres + 31) * 8;
			y = x * aspect / 10000;
			printf("\t%dx%d%c\t%d Hz\n", x, y,
			       x > 1000 ? ' ' : '\t', (vfreq & 0x3f) + 60);
			have_timing = 1;
		}
	}

	/* Detailed timing information. */
	for (i = 0; i < ARRAY_SIZE(edid_info->monitor_details.descriptor);
			i++) {
		edid_print_dtd(&edid_info->monitor_details.descriptor[i],
			       &have_timing);
	}

	if (!have_timing)
		printf("\tNone\n");
}
Commit	Line	Data
d46b5f7d TWHT	1	/*
	2	* Copyright (c) 2012 The Chromium OS Authors.
	3	*
	4	* (C) Copyright 2010
	5	* Petr Stetiar <ynezz@true.cz>
	6	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
d46b5f7d TWHT	8	*
	9	* Contains stolen code from ddcprobe project which is:
	10	* Copyright (C) Nalin Dahyabhai <bigfun@pobox.com>
d46b5f7d TWHT	11	*/
	12
	13	#include <common.h>
	14	#include <edid.h>
e745d064	15	#include <errno.h>
d46b5f7d TWHT	16	#include <linux/ctype.h>
	17	#include <linux/string.h>
	18
	19	int edid_check_info(struct edid1_info *edid_info)
	20	{
	21	if ((edid_info == NULL) \|\| (edid_info->version == 0))
	22	return -1;
	23
	24	if (memcmp(edid_info->header, "\x0\xff\xff\xff\xff\xff\xff\x0", 8))
	25	return -1;
	26
	27	if (edid_info->version == 0xff && edid_info->revision == 0xff)
	28	return -1;
	29
	30	return 0;
	31	}
	32
e745d064 HG	33	int edid_check_checksum(u8 *edid_block)
	34	{
	35	u8 checksum = 0;
	36	int i;
	37
	38	for (i = 0; i < 128; i++)
	39	checksum += edid_block[i];
	40
	41	return (checksum == 0) ? 0 : -EINVAL;
	42	}
	43
d46b5f7d TWHT	44	int edid_get_ranges(struct edid1_info edid, unsigned int hmin,
	45	unsigned int hmax, unsigned int vmin,
	46	unsigned int *vmax)
	47	{
	48	int i;
	49	struct edid_monitor_descriptor *monitor;
	50
	51	hmin = hmax = vmin = vmax = 0;
	52	if (edid_check_info(edid))
	53	return -1;
	54
	55	for (i = 0; i < ARRAY_SIZE(edid->monitor_details.descriptor); i++) {
	56	monitor = &edid->monitor_details.descriptor[i];
	57	if (monitor->type == EDID_MONITOR_DESCRIPTOR_RANGE) {
	58	*hmin = monitor->data.range_data.horizontal_min;
	59	*hmax = monitor->data.range_data.horizontal_max;
	60	*vmin = monitor->data.range_data.vertical_min;
	61	*vmax = monitor->data.range_data.vertical_max;
	62	return 0;
	63	}
	64	}
	65	return -1;
	66	}
	67
	68	/**
	69	* Snip the tailing whitespace/return of a string.
	70	*
	71	* @param string The string to be snipped
	72	* @return the snipped string
	73	*/
	74	static char snip(char string)
	75	{
	76	char *s;
	77
	78	/*
	79	* This is always a 13 character buffer
	80	* and it's not always terminated.
	81	*/
	82	string[12] = '\0';
	83	s = &string[strlen(string) - 1];
	84
	85	while (s >= string && (isspace(s) \|\| s == '\n' \|\| *s == '\r' \|\|
	86	*s == '\0'))
	87	*(s--) = '\0';
	88
	89	return string;
	90	}
	91
	92	/**
	93	* Print an EDID monitor descriptor block
	94	*
	95	* @param monitor The EDID monitor descriptor block
	96	* @have_timing Modifies to 1 if the desciptor contains timing info
	97	*/
	98	static void edid_print_dtd(struct edid_monitor_descriptor *monitor,
	99	unsigned int *have_timing)
	100	{
	101	unsigned char bytes = (unsigned char )monitor;
	102	struct edid_detailed_timing *timing =
	103	(struct edid_detailed_timing *)monitor;
	104
	105	if (bytes[0] == 0 && bytes[1] == 0) {
	106	if (monitor->type == EDID_MONITOR_DESCRIPTOR_SERIAL)
	107	printf("Monitor serial number: %s\n",
108	snip(monitor->data.string));
109	else if (monitor->type == EDID_MONITOR_DESCRIPTOR_ASCII)
110	printf("Monitor ID: %s\n",
111	snip(monitor->data.string));
112	else if (monitor->type == EDID_MONITOR_DESCRIPTOR_NAME)
113	printf("Monitor name: %s\n",
114	snip(monitor->data.string));
115	else if (monitor->type == EDID_MONITOR_DESCRIPTOR_RANGE)
116	printf("Monitor range limits, horizontal sync: "
117	"%d-%d kHz, vertical refresh: "
118	"%d-%d Hz, max pixel clock: "
119	"%d MHz\n",
120	monitor->data.range_data.horizontal_min,
121	monitor->data.range_data.horizontal_max,
122	monitor->data.range_data.vertical_min,
123	monitor->data.range_data.vertical_max,
124	monitor->data.range_data.pixel_clock_max * 10);
125	} else {
126	uint32_t pixclock, h_active, h_blanking, v_active, v_blanking;
127	uint32_t h_total, v_total, vfreq;
128
129	pixclock = EDID_DETAILED_TIMING_PIXEL_CLOCK(*timing);
130	h_active = EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*timing);
131	h_blanking = EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*timing);
132	v_active = EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*timing);
133	v_blanking = EDID_DETAILED_TIMING_VERTICAL_BLANKING(*timing);
134
135	h_total = h_active + h_blanking;
136	v_total = v_active + v_blanking;
137	if (v_total * h_total)
138	vfreq = pixclock / (v_total * h_total);
139	else
140	vfreq = 1; /* Error case */
141	printf("\t%dx%d\%c\t%d Hz (detailed)\n", h_active,
142	v_active, h_active > 1000 ? ' ' : '\t', vfreq);
143	*have_timing = 1;
144	}
145	}
146
147	/**
148	* Get the manufacturer name from an EDID info.
149	*
150	* @param edid_info The EDID info to be printed
151	* @param name Returns the string of the manufacturer name
152	*/
153	static void edid_get_manufacturer_name(struct edid1_info edid, char name)
154	{
155	name[0] = EDID1_INFO_MANUFACTURER_NAME_CHAR1(*edid) + 'A' - 1;
156	name[1] = EDID1_INFO_MANUFACTURER_NAME_CHAR2(*edid) + 'A' - 1;
157	name[2] = EDID1_INFO_MANUFACTURER_NAME_CHAR3(*edid) + 'A' - 1;
158	name[3] = '\0';
159	}
160
161	void edid_print_info(struct edid1_info *edid_info)
162	{
163	int i;
164	char manufacturer[4];
165	unsigned int have_timing = 0;
166	uint32_t serial_number;
167
168	if (edid_check_info(edid_info)) {
169	printf("Not a valid EDID\n");
170	return;
171	}
172
173	printf("EDID version: %d.%d\n",
174	edid_info->version, edid_info->revision);
175
176	printf("Product ID code: %04x\n", EDID1_INFO_PRODUCT_CODE(*edid_info));
177
178	edid_get_manufacturer_name(edid_info, manufacturer);
179	printf("Manufacturer: %s\n", manufacturer);
180
181	serial_number = EDID1_INFO_SERIAL_NUMBER(*edid_info);
182	if (serial_number != 0xffffffff) {
183	if (strcmp(manufacturer, "MAG") == 0)
184	serial_number -= 0x7000000;
185	if (strcmp(manufacturer, "OQI") == 0)
186	serial_number -= 456150000;
187	if (strcmp(manufacturer, "VSC") == 0)
188	serial_number -= 640000000;
189	}
190	printf("Serial number: %08x\n", serial_number);
191	printf("Manufactured in week: %d year: %d\n",
192	edid_info->week, edid_info->year + 1990);
193
194	printf("Video input definition: %svoltage level %d%s%s%s%s%s\n",
195	EDID1_INFO_VIDEO_INPUT_DIGITAL(*edid_info) ?
196	"digital signal, " : "analog signal, ",
197	EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(*edid_info),
198	EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(*edid_info) ?
199	", blank to black" : "",
200	EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(*edid_info) ?
201	", separate sync" : "",
202	EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(*edid_info) ?
203	", composite sync" : "",
204	EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(*edid_info) ?
205	", sync on green" : "",
206	EDID1_INFO_VIDEO_INPUT_SERRATION_V(*edid_info) ?
207	", serration v" : "");
208
209	printf("Monitor is %s\n",
210	EDID1_INFO_FEATURE_RGB(*edid_info) ? "RGB" : "non-RGB");
211
212	printf("Maximum visible display size: %d cm x %d cm\n",
213	edid_info->max_size_horizontal,
214	edid_info->max_size_vertical);
215
216	printf("Power management features: %s%s, %s%s, %s%s\n",
217	EDID1_INFO_FEATURE_ACTIVE_OFF(*edid_info) ?
218	"" : "no ", "active off",
219	EDID1_INFO_FEATURE_SUSPEND(*edid_info) ? "" : "no ", "suspend",
220	EDID1_INFO_FEATURE_STANDBY(*edid_info) ? "" : "no ", "standby");
221
222	printf("Estabilished timings:\n");
223	if (EDID1_INFO_ESTABLISHED_TIMING_720X400_70(*edid_info))
224	printf("\t720x400\t\t70 Hz (VGA 640x400, IBM)\n");
225	if (EDID1_INFO_ESTABLISHED_TIMING_720X400_88(*edid_info))
226	printf("\t720x400\t\t88 Hz (XGA2)\n");
227	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_60(*edid_info))
228	printf("\t640x480\t\t60 Hz (VGA)\n");
229	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_67(*edid_info))
230	printf("\t640x480\t\t67 Hz (Mac II, Apple)\n");
231	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_72(*edid_info))
232	printf("\t640x480\t\t72 Hz (VESA)\n");
233	if (EDID1_INFO_ESTABLISHED_TIMING_640X480_75(*edid_info))
234	printf("\t640x480\t\t75 Hz (VESA)\n");
235	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_56(*edid_info))
236	printf("\t800x600\t\t56 Hz (VESA)\n");
237	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_60(*edid_info))
238	printf("\t800x600\t\t60 Hz (VESA)\n");
239	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_72(*edid_info))
240	printf("\t800x600\t\t72 Hz (VESA)\n");
241	if (EDID1_INFO_ESTABLISHED_TIMING_800X600_75(*edid_info))
242	printf("\t800x600\t\t75 Hz (VESA)\n");
243	if (EDID1_INFO_ESTABLISHED_TIMING_832X624_75(*edid_info))
244	printf("\t832x624\t\t75 Hz (Mac II)\n");
245	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(*edid_info))
246	printf("\t1024x768\t87 Hz Interlaced (8514A)\n");
247	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(*edid_info))
248	printf("\t1024x768\t60 Hz (VESA)\n");
249	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(*edid_info))
250	printf("\t1024x768\t70 Hz (VESA)\n");
251	if (EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(*edid_info))
252	printf("\t1024x768\t75 Hz (VESA)\n");
253	if (EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(*edid_info))
254	printf("\t1280x1024\t75 (VESA)\n");
255	if (EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(*edid_info))
256	printf("\t1152x870\t75 (Mac II)\n");
257
258	/* Standard timings. */
259	printf("Standard timings:\n");
260	for (i = 0; i < ARRAY_SIZE(edid_info->standard_timings); i++) {
261	unsigned int aspect = 10000;
262	unsigned int x, y;
263	unsigned char xres, vfreq;
264
265	xres = EDID1_INFO_STANDARD_TIMING_XRESOLUTION(*edid_info, i);
266	vfreq = EDID1_INFO_STANDARD_TIMING_VFREQ(*edid_info, i);
267	if ((xres != vfreq) \|\|
268	((xres != 0) && (xres != 1)) \|\|
269	((vfreq != 0) && (vfreq != 1))) {
270	switch (EDID1_INFO_STANDARD_TIMING_ASPECT(*edid_info,
271	i)) {
272	case ASPECT_625:
273	aspect = 6250;
274	break;
275	case ASPECT_75:
276	aspect = 7500;
277	break;
278	case ASPECT_8:
279	aspect = 8000;
280	break;
281	case ASPECT_5625:
282	aspect = 5625;
283	break;
284	}
285	x = (xres + 31) * 8;
286	y = x * aspect / 10000;
287	printf("\t%dx%d%c\t%d Hz\n", x, y,
288	x > 1000 ? ' ' : '\t', (vfreq & 0x3f) + 60);
289	have_timing = 1;
290	}
291	}
292
293	/* Detailed timing information. */
294	for (i = 0; i < ARRAY_SIZE(edid_info->monitor_details.descriptor);
295	i++) {
296	edid_print_dtd(&edid_info->monitor_details.descriptor[i],
297	&have_timing);
298	}
299
300	if (!have_timing)
301	printf("\tNone\n");
302	}