185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
477 lines
15 KiB
C
477 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2004
|
|
* Pierre Aubert, Staubli Faverges , <p.aubert@staubli.com>
|
|
* Copyright 2011 Freescale Semiconductor, Inc.
|
|
*/
|
|
|
|
/************************************************************************
|
|
Get Parameters for the video mode:
|
|
The default video mode can be defined in CONFIG_SYS_DEFAULT_VIDEO_MODE.
|
|
If undefined, default video mode is set to 0x301
|
|
Parameters can be set via the variable "videomode" in the environment.
|
|
2 diferent ways are possible:
|
|
"videomode=301" - 301 is a hexadecimal number describing the VESA
|
|
mode. Following modes are implemented:
|
|
|
|
Colors 640x480 800x600 1024x768 1152x864 1280x1024
|
|
--------+---------------------------------------------
|
|
8 bits | 0x301 0x303 0x305 0x161 0x307
|
|
15 bits | 0x310 0x313 0x316 0x162 0x319
|
|
16 bits | 0x311 0x314 0x317 0x163 0x31A
|
|
24 bits | 0x312 0x315 0x318 ? 0x31B
|
|
--------+---------------------------------------------
|
|
"videomode=bootargs"
|
|
- the parameters are parsed from the bootargs.
|
|
The format is "NAME:VALUE,NAME:VALUE" etc.
|
|
Ex.:
|
|
"bootargs=video=ctfb:x:800,y:600,depth:16,pclk:25000"
|
|
Parameters not included in the list will be taken from
|
|
the default mode, which is one of the following:
|
|
mode:0 640x480x24
|
|
mode:1 800x600x16
|
|
mode:2 1024x768x8
|
|
mode:3 960x720x24
|
|
mode:4 1152x864x16
|
|
mode:5 1280x1024x8
|
|
|
|
if "mode" is not provided within the parameter list,
|
|
mode:0 is assumed.
|
|
Following parameters are supported:
|
|
x xres = visible resolution horizontal
|
|
y yres = visible resolution vertical
|
|
pclk pixelclocks in pico sec
|
|
le left_marging time from sync to picture in pixelclocks
|
|
ri right_marging time from picture to sync in pixelclocks
|
|
up upper_margin time from sync to picture
|
|
lo lower_margin
|
|
hs hsync_len length of horizontal sync
|
|
vs vsync_len length of vertical sync
|
|
sync see FB_SYNC_*
|
|
vmode see FB_VMODE_*
|
|
depth Color depth in bits per pixel
|
|
All other parameters in the variable bootargs are ignored.
|
|
It is also possible to set the parameters direct in the
|
|
variable "videomode", or in another variable i.e.
|
|
"myvideo" and setting the variable "videomode=myvideo"..
|
|
****************************************************************************/
|
|
|
|
#include <common.h>
|
|
#include <edid.h>
|
|
#include <env.h>
|
|
#include <errno.h>
|
|
#include <fdtdec.h>
|
|
#include <linux/ctype.h>
|
|
|
|
#include "videomodes.h"
|
|
|
|
const struct ctfb_vesa_modes vesa_modes[VESA_MODES_COUNT] = {
|
|
{0x301, RES_MODE_640x480, 8},
|
|
{0x310, RES_MODE_640x480, 15},
|
|
{0x311, RES_MODE_640x480, 16},
|
|
{0x312, RES_MODE_640x480, 24},
|
|
{0x303, RES_MODE_800x600, 8},
|
|
{0x313, RES_MODE_800x600, 15},
|
|
{0x314, RES_MODE_800x600, 16},
|
|
{0x315, RES_MODE_800x600, 24},
|
|
{0x305, RES_MODE_1024x768, 8},
|
|
{0x316, RES_MODE_1024x768, 15},
|
|
{0x317, RES_MODE_1024x768, 16},
|
|
{0x318, RES_MODE_1024x768, 24},
|
|
{0x161, RES_MODE_1152x864, 8},
|
|
{0x162, RES_MODE_1152x864, 15},
|
|
{0x163, RES_MODE_1152x864, 16},
|
|
{0x307, RES_MODE_1280x1024, 8},
|
|
{0x319, RES_MODE_1280x1024, 15},
|
|
{0x31A, RES_MODE_1280x1024, 16},
|
|
{0x31B, RES_MODE_1280x1024, 24},
|
|
};
|
|
const struct ctfb_res_modes res_mode_init[RES_MODES_COUNT] = {
|
|
/* x y hz pixclk ps/kHz le ri up lo hs vs s vmode */
|
|
#ifndef CONFIG_VIDEO_STD_TIMINGS
|
|
{ 640, 480, 60, 39721, 25180, 40, 24, 32, 11, 96, 2, 0, FB_VMODE_NONINTERLACED},
|
|
{ 800, 600, 60, 27778, 36000, 64, 24, 22, 1, 72, 2, 0, FB_VMODE_NONINTERLACED},
|
|
{1024, 768, 60, 15384, 65000, 168, 8, 29, 3, 144, 4, 0, FB_VMODE_NONINTERLACED},
|
|
{ 960, 720, 80, 13100, 76335, 160, 40, 32, 8, 80, 4, 0, FB_VMODE_NONINTERLACED},
|
|
{1152, 864, 60, 12004, 83300, 200, 64, 32, 16, 80, 4, 0, FB_VMODE_NONINTERLACED},
|
|
{1280, 1024, 60, 9090, 110000, 200, 48, 26, 1, 184, 3, 0, FB_VMODE_NONINTERLACED},
|
|
#else
|
|
{ 640, 480, 60, 39683, 25200, 48, 16, 33, 10, 96, 2, 0, FB_VMODE_NONINTERLACED},
|
|
{ 800, 600, 60, 25000, 40000, 88, 40, 23, 1, 128, 4, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED},
|
|
{1024, 768, 60, 15384, 65000, 160, 24, 29, 3, 136, 6, 0, FB_VMODE_NONINTERLACED},
|
|
{ 960, 720, 75, 13468, 74250, 176, 72, 27, 1, 112, 2, 0, FB_VMODE_NONINTERLACED},
|
|
{1152, 864, 75, 9259, 108000, 256, 64, 32, 1, 128, 3, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED},
|
|
{1280, 1024, 60, 9259, 108000, 248, 48, 38, 1, 112, 3, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED},
|
|
#endif
|
|
{1280, 720, 60, 13468, 74250, 220, 110, 20, 5, 40, 5, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED},
|
|
{1360, 768, 60, 11696, 85500, 256, 64, 17, 3, 112, 7, 0, FB_VMODE_NONINTERLACED},
|
|
{1920, 1080, 60, 6734, 148500, 148, 88, 36, 4, 44, 5, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED},
|
|
{1920, 1200, 60, 6494, 154000, 80, 48, 26, 3, 32, 6, FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED},
|
|
};
|
|
|
|
/************************************************************************
|
|
* Get Parameters for the video mode:
|
|
*/
|
|
/*********************************************************************
|
|
* returns the length to the next seperator
|
|
*/
|
|
static int
|
|
video_get_param_len(const char *start, char sep)
|
|
{
|
|
int i = 0;
|
|
while ((*start != 0) && (*start != sep)) {
|
|
start++;
|
|
i++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static int
|
|
video_search_param (char *start, char *param)
|
|
{
|
|
int len, totallen, i;
|
|
char *p = start;
|
|
len = strlen (param);
|
|
totallen = len + strlen (start);
|
|
for (i = 0; i < totallen; i++) {
|
|
if (strncmp (p++, param, len) == 0)
|
|
return (i);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/***************************************************************
|
|
* Get parameter via the environment as it is done for the
|
|
* linux kernel i.e:
|
|
* video=ctfb:x:800,xv:1280,y:600,yv:1024,depth:16,mode:0,pclk:25000,
|
|
* le:56,ri:48,up:26,lo:5,hs:152,vs:2,sync:0,vmode:0,accel:0
|
|
*
|
|
* penv is a pointer to the environment, containing the string, or the name of
|
|
* another environment variable. It could even be the term "bootargs"
|
|
*/
|
|
|
|
#define GET_OPTION(name,var) \
|
|
if(strncmp(p,name,strlen(name))==0) { \
|
|
val_s=p+strlen(name); \
|
|
var=simple_strtoul(val_s, NULL, 10); \
|
|
}
|
|
|
|
int video_get_params (struct ctfb_res_modes *pPar, char *penv)
|
|
{
|
|
char *p, *s, *val_s;
|
|
int i = 0;
|
|
int bpp;
|
|
int mode;
|
|
|
|
/* first search for the environment containing the real param string */
|
|
s = penv;
|
|
|
|
p = env_get(s);
|
|
if (p)
|
|
s = p;
|
|
|
|
/*
|
|
* in case of the bootargs line, we have to start
|
|
* after "video=ctfb:"
|
|
*/
|
|
i = video_search_param (s, "video=ctfb:");
|
|
if (i >= 0) {
|
|
s += i;
|
|
s += strlen ("video=ctfb:");
|
|
}
|
|
/* search for mode as a default value */
|
|
p = s;
|
|
mode = 0; /* default */
|
|
|
|
while ((i = video_get_param_len (p, ',')) != 0) {
|
|
GET_OPTION ("mode:", mode)
|
|
p += i;
|
|
if (*p != 0)
|
|
p++; /* skip ',' */
|
|
}
|
|
|
|
if (mode >= RES_MODES_COUNT)
|
|
mode = 0;
|
|
|
|
*pPar = res_mode_init[mode]; /* copy default values */
|
|
bpp = 24 - ((mode % 3) * 8);
|
|
p = s; /* restart */
|
|
|
|
while ((i = video_get_param_len (p, ',')) != 0) {
|
|
GET_OPTION ("x:", pPar->xres)
|
|
GET_OPTION ("y:", pPar->yres)
|
|
GET_OPTION ("refresh:", pPar->refresh)
|
|
GET_OPTION ("le:", pPar->left_margin)
|
|
GET_OPTION ("ri:", pPar->right_margin)
|
|
GET_OPTION ("up:", pPar->upper_margin)
|
|
GET_OPTION ("lo:", pPar->lower_margin)
|
|
GET_OPTION ("hs:", pPar->hsync_len)
|
|
GET_OPTION ("vs:", pPar->vsync_len)
|
|
GET_OPTION ("sync:", pPar->sync)
|
|
GET_OPTION ("vmode:", pPar->vmode)
|
|
GET_OPTION ("pclk:", pPar->pixclock)
|
|
GET_OPTION ("pclk_khz:", pPar->pixclock_khz)
|
|
GET_OPTION ("depth:", bpp)
|
|
p += i;
|
|
if (*p != 0)
|
|
p++; /* skip ',' */
|
|
}
|
|
return bpp;
|
|
}
|
|
|
|
/*
|
|
* Parse the 'video-mode' environment variable
|
|
*
|
|
* Example: "video-mode=fslfb:1280x1024-32@60,monitor=dvi". See
|
|
* doc/README.video for more information on how to set the variable.
|
|
*
|
|
* @xres: returned value of X-resolution
|
|
* @yres: returned value of Y-resolution
|
|
* @depth: returned value of color depth
|
|
* @freq: returned value of monitor frequency
|
|
* @options: pointer to any remaining options, or NULL
|
|
*
|
|
* Returns 1 if valid values were found, 0 otherwise
|
|
*/
|
|
int video_get_video_mode(unsigned int *xres, unsigned int *yres,
|
|
unsigned int *depth, unsigned int *freq, const char **options)
|
|
{
|
|
char *p = env_get("video-mode");
|
|
if (!p)
|
|
return 0;
|
|
|
|
/* Skip over the driver name, which we don't care about. */
|
|
p = strchr(p, ':');
|
|
if (!p)
|
|
return 0;
|
|
|
|
/* Get the X-resolution*/
|
|
while (*p && !isdigit(*p))
|
|
p++;
|
|
*xres = simple_strtoul(p, &p, 10);
|
|
if (!*xres)
|
|
return 0;
|
|
|
|
/* Get the Y-resolution */
|
|
while (*p && !isdigit(*p))
|
|
p++;
|
|
*yres = simple_strtoul(p, &p, 10);
|
|
if (!*yres)
|
|
return 0;
|
|
|
|
/* Get the depth */
|
|
while (*p && !isdigit(*p))
|
|
p++;
|
|
*depth = simple_strtoul(p, &p, 10);
|
|
if (!*depth)
|
|
return 0;
|
|
|
|
/* Get the frequency */
|
|
while (*p && !isdigit(*p))
|
|
p++;
|
|
*freq = simple_strtoul(p, &p, 10);
|
|
if (!*freq)
|
|
return 0;
|
|
|
|
/* Find the extra options, if any */
|
|
p = strchr(p, ',');
|
|
*options = p ? p + 1 : NULL;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Parse the 'video-mode' environment variable using video_get_video_mode()
|
|
* and lookup the matching ctfb_res_modes in res_mode_init.
|
|
*
|
|
* @default_mode: RES_MODE_##x## define for the mode to store in mode_ret
|
|
* when 'video-mode' is not set or does not contain a valid mode
|
|
* @default_depth: depth to set when 'video-mode' is not set
|
|
* @mode_ret: pointer where the mode will be stored
|
|
* @depth_ret: pointer where the depth will be stored
|
|
* @options: pointer to any remaining options, or NULL
|
|
*/
|
|
void video_get_ctfb_res_modes(int default_mode, unsigned int default_depth,
|
|
const struct ctfb_res_modes **mode_ret,
|
|
unsigned int *depth_ret,
|
|
const char **options)
|
|
{
|
|
unsigned int i, xres, yres, depth, refresh;
|
|
|
|
*mode_ret = &res_mode_init[default_mode];
|
|
*depth_ret = default_depth;
|
|
*options = NULL;
|
|
|
|
if (!video_get_video_mode(&xres, &yres, &depth, &refresh, options))
|
|
return;
|
|
|
|
for (i = 0; i < RES_MODES_COUNT; i++) {
|
|
if (res_mode_init[i].xres == xres &&
|
|
res_mode_init[i].yres == yres &&
|
|
res_mode_init[i].refresh == refresh) {
|
|
*mode_ret = &res_mode_init[i];
|
|
*depth_ret = depth;
|
|
return;
|
|
}
|
|
}
|
|
|
|
printf("video-mode %dx%d-%d@%d not available, falling back to %dx%d-%d@%d\n",
|
|
xres, yres, depth, refresh, (*mode_ret)->xres,
|
|
(*mode_ret)->yres, *depth_ret, (*mode_ret)->refresh);
|
|
}
|
|
|
|
/*
|
|
* Find the named string option within the ',' separated options string, and
|
|
* store its value in dest.
|
|
*
|
|
* @options: ',' separated options string
|
|
* @name: name of the option to look for
|
|
* @dest: destination buffer to store the value of the option in
|
|
* @dest_len: length of dest
|
|
* @def: value to store in dest if the option is not present in options
|
|
*/
|
|
void video_get_option_string(const char *options, const char *name,
|
|
char *dest, int dest_len, const char *def)
|
|
{
|
|
const char *p = options;
|
|
const int name_len = strlen(name);
|
|
int i, len;
|
|
|
|
while (p && (i = video_get_param_len(p, ',')) != 0) {
|
|
if (strncmp(p, name, name_len) == 0 && p[name_len] == '=') {
|
|
len = i - (name_len + 1);
|
|
if (len >= dest_len)
|
|
len = dest_len - 1;
|
|
memcpy(dest, &p[name_len + 1], len);
|
|
dest[len] = 0;
|
|
return;
|
|
}
|
|
p += i;
|
|
if (*p != 0)
|
|
p++; /* skip ',' */
|
|
}
|
|
strcpy(dest, def);
|
|
}
|
|
|
|
/*
|
|
* Find the named integer option within the ',' separated options string, and
|
|
* return its value.
|
|
*
|
|
* @options: ',' separated options string
|
|
* @name: name of the option to look for
|
|
* @def: value to return if the option is not present in options
|
|
*/
|
|
int video_get_option_int(const char *options, const char *name, int def)
|
|
{
|
|
const char *p = options;
|
|
const int name_len = strlen(name);
|
|
int i;
|
|
|
|
while (p && (i = video_get_param_len(p, ',')) != 0) {
|
|
if (strncmp(p, name, name_len) == 0 && p[name_len] == '=')
|
|
return simple_strtoul(&p[name_len + 1], NULL, 10);
|
|
|
|
p += i;
|
|
if (*p != 0)
|
|
p++; /* skip ',' */
|
|
}
|
|
return def;
|
|
}
|
|
|
|
/**
|
|
* Convert an EDID detailed timing to a struct ctfb_res_modes
|
|
*
|
|
* @param t The EDID detailed timing to be converted
|
|
* @param mode Returns the converted timing
|
|
*
|
|
* Return: 0 on success, or a negative errno on error
|
|
*/
|
|
int video_edid_dtd_to_ctfb_res_modes(struct edid_detailed_timing *t,
|
|
struct ctfb_res_modes *mode)
|
|
{
|
|
int margin, h_total, v_total;
|
|
|
|
/* Check all timings are non 0 */
|
|
if (EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) == 0 ||
|
|
EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*t) == 0 ||
|
|
EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*t) == 0 ||
|
|
EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*t) == 0 ||
|
|
EDID_DETAILED_TIMING_VERTICAL_BLANKING(*t) == 0 ||
|
|
EDID_DETAILED_TIMING_HSYNC_OFFSET(*t) == 0 ||
|
|
EDID_DETAILED_TIMING_VSYNC_OFFSET(*t) == 0 ||
|
|
/* 3d formats are not supported */
|
|
EDID_DETAILED_TIMING_FLAG_STEREO(*t) != 0)
|
|
return -EINVAL;
|
|
|
|
mode->xres = EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*t);
|
|
mode->yres = EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*t);
|
|
|
|
h_total = mode->xres + EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*t);
|
|
v_total = mode->yres + EDID_DETAILED_TIMING_VERTICAL_BLANKING(*t);
|
|
mode->refresh = EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) /
|
|
(h_total * v_total);
|
|
|
|
mode->pixclock_khz = EDID_DETAILED_TIMING_PIXEL_CLOCK(*t) / 1000;
|
|
mode->pixclock = 1000000000L / mode->pixclock_khz;
|
|
|
|
mode->right_margin = EDID_DETAILED_TIMING_HSYNC_OFFSET(*t);
|
|
mode->hsync_len = EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(*t);
|
|
margin = EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*t) -
|
|
(mode->right_margin + mode->hsync_len);
|
|
if (margin <= 0)
|
|
return -EINVAL;
|
|
|
|
mode->left_margin = margin;
|
|
|
|
mode->lower_margin = EDID_DETAILED_TIMING_VSYNC_OFFSET(*t);
|
|
mode->vsync_len = EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(*t);
|
|
margin = EDID_DETAILED_TIMING_VERTICAL_BLANKING(*t) -
|
|
(mode->lower_margin + mode->vsync_len);
|
|
if (margin <= 0)
|
|
return -EINVAL;
|
|
|
|
mode->upper_margin = margin;
|
|
|
|
mode->sync = 0;
|
|
if (EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(*t))
|
|
mode->sync |= FB_SYNC_HOR_HIGH_ACT;
|
|
if (EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(*t))
|
|
mode->sync |= FB_SYNC_VERT_HIGH_ACT;
|
|
|
|
if (EDID_DETAILED_TIMING_FLAG_INTERLACED(*t))
|
|
mode->vmode = FB_VMODE_INTERLACED;
|
|
else
|
|
mode->vmode = FB_VMODE_NONINTERLACED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void video_ctfb_mode_to_display_timing(const struct ctfb_res_modes *mode,
|
|
struct display_timing *timing)
|
|
{
|
|
timing->pixelclock.typ = mode->pixclock_khz * 1000;
|
|
|
|
timing->hactive.typ = mode->xres;
|
|
timing->hfront_porch.typ = mode->right_margin;
|
|
timing->hback_porch.typ = mode->left_margin;
|
|
timing->hsync_len.typ = mode->hsync_len;
|
|
|
|
timing->vactive.typ = mode->yres;
|
|
timing->vfront_porch.typ = mode->lower_margin;
|
|
timing->vback_porch.typ = mode->upper_margin;
|
|
timing->vsync_len.typ = mode->vsync_len;
|
|
|
|
timing->flags = 0;
|
|
|
|
if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
|
|
timing->flags |= DISPLAY_FLAGS_HSYNC_HIGH;
|
|
else
|
|
timing->flags |= DISPLAY_FLAGS_HSYNC_LOW;
|
|
if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
|
|
timing->flags |= DISPLAY_FLAGS_VSYNC_HIGH;
|
|
else
|
|
timing->flags |= DISPLAY_FLAGS_VSYNC_LOW;
|
|
if (mode->vmode == FB_VMODE_INTERLACED)
|
|
timing->flags |= DISPLAY_FLAGS_INTERLACED;
|
|
}
|