mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
290 lines
9.1 KiB
C
290 lines
9.1 KiB
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 <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_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");
|
|
}
|