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-rw-r--r--roms/u-boot/drivers/video/videomodes.c476
1 files changed, 476 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/video/videomodes.c b/roms/u-boot/drivers/video/videomodes.c
new file mode 100644
index 000000000..ed7373eac
--- /dev/null
+++ b/roms/u-boot/drivers/video/videomodes.c
@@ -0,0 +1,476 @@
+// 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;
+}