+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2004
* Pierre Aubert, Staubli Faverges , <p.aubert@staubli.com>
* Copyright 2011 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/************************************************************************
****************************************************************************/
#include <common.h>
+#include <edid.h>
+#include <errno.h>
#include <linux/ctype.h>
#include "videomodes.h"
/* first search for the environment containing the real param string */
s = penv;
- if ((p = getenv (s)) != NULL)
+ p = env_get(s);
+ if (p)
s = p;
/*
int video_get_video_mode(unsigned int *xres, unsigned int *yres,
unsigned int *depth, unsigned int *freq, const char **options)
{
- char *p = getenv("video-mode");
+ char *p = env_get("video-mode");
if (!p)
return 0;
}
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_HSYNC_PULSE_WIDTH(*t) == 0 ||
+ EDID_DETAILED_TIMING_VSYNC_OFFSET(*t) == 0 ||
+ EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(*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;
+}