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https://github.com/brain-hackers/u-boot-brain
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0c91d25767
Add pixelclock_khz and refresh fields to ctfb_res_modes: 1) pixelclocks are usually referred to in hz, not picoseconds, and e.g pll-s are also typically programmed in hz, not ps. Converting between the 2 leads to rounding differences, add a pixelclock_khz field to directly store the *exact* pixelclock for a mode, so that drivers do not need to resort to rounding tricks to try and guess the exact pixelclock; 2) The video-mode environment variable, as parsed by video_get_video_mode also contains the vertical refresh rate, add a refresh field, so that the refresh-rate can be matched when parsing the video-mode environment variable. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Anatolij Gustschin <agust@denx.de>
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*
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* (C) Copyright 2004
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* Pierre Aubert, Staubli Faverges , <p.aubert@staubli.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef CONFIG_SYS_DEFAULT_VIDEO_MODE
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#define CONFIG_SYS_DEFAULT_VIDEO_MODE 0x301
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#endif
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/* Some mode definitions */
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#define FB_SYNC_HOR_HIGH_ACT 1 /* horizontal sync high active */
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#define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */
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#define FB_SYNC_EXT 4 /* external sync */
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#define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */
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#define FB_SYNC_BROADCAST 16 /* broadcast video timings */
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/* vtotal = 144d/288n/576i => PAL */
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/* vtotal = 121d/242n/484i => NTSC */
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#define FB_SYNC_ON_GREEN 32 /* sync on green */
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#define FB_VMODE_NONINTERLACED 0 /* non interlaced */
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#define FB_VMODE_INTERLACED 1 /* interlaced */
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#define FB_VMODE_DOUBLE 2 /* double scan */
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#define FB_VMODE_MASK 255
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#define FB_VMODE_YWRAP 256 /* ywrap instead of panning */
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#define FB_VMODE_SMOOTH_XPAN 512 /* smooth xpan possible (internally used) */
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#define FB_VMODE_CONUPDATE 512 /* don't update x/yoffset */
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/******************************************************************
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* Resolution Struct
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******************************************************************/
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struct ctfb_res_modes {
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int xres; /* visible resolution */
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int yres;
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int refresh; /* vertical refresh rate in hz */
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/* Timing: All values in pixclocks, except pixclock (of course) */
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int pixclock; /* pixel clock in ps (pico seconds) */
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int pixclock_khz; /* pixel clock in kHz */
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int left_margin; /* time from sync to picture */
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int right_margin; /* time from picture to sync */
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int upper_margin; /* time from sync to picture */
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int lower_margin;
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int hsync_len; /* length of horizontal sync */
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int vsync_len; /* length of vertical sync */
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int sync; /* see FB_SYNC_* */
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int vmode; /* see FB_VMODE_* */
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};
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/******************************************************************
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* Vesa Mode Struct
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******************************************************************/
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struct ctfb_vesa_modes {
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int vesanr; /* Vesa number as in LILO (VESA Nr + 0x200} */
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int resindex; /* index to resolution struct */
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int bits_per_pixel; /* bpp */
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};
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#define RES_MODE_640x480 0
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#define RES_MODE_800x600 1
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#define RES_MODE_1024x768 2
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#define RES_MODE_960_720 3
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#define RES_MODE_1152x864 4
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#define RES_MODE_1280x1024 5
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#define RES_MODES_COUNT 6
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#define VESA_MODES_COUNT 19
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extern const struct ctfb_vesa_modes vesa_modes[];
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extern const struct ctfb_res_modes res_mode_init[];
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int video_get_params (struct ctfb_res_modes *pPar, char *penv);
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int video_get_video_mode(unsigned int *xres, unsigned int *yres,
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unsigned int *depth, unsigned int *freq, const char **options);
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