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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>
*
* description of display timings
*/
#ifndef __LINUX_DISPLAY_TIMING_H
#define __LINUX_DISPLAY_TIMING_H
#include <linux/bitops.h>
#include <linux/types.h>
enum display_flags {
DISPLAY_FLAGS_HSYNC_LOW = BIT(0),
DISPLAY_FLAGS_HSYNC_HIGH = BIT(1),
DISPLAY_FLAGS_VSYNC_LOW = BIT(2),
DISPLAY_FLAGS_VSYNC_HIGH = BIT(3),
/* data enable flag */
DISPLAY_FLAGS_DE_LOW = BIT(4),
DISPLAY_FLAGS_DE_HIGH = BIT(5),
/* drive data on pos. edge */
DISPLAY_FLAGS_PIXDATA_POSEDGE = BIT(6),
/* drive data on neg. edge */
DISPLAY_FLAGS_PIXDATA_NEGEDGE = BIT(7),
DISPLAY_FLAGS_INTERLACED = BIT(8),
DISPLAY_FLAGS_DOUBLESCAN = BIT(9),
DISPLAY_FLAGS_DOUBLECLK = BIT(10),
/* drive sync on pos. edge */
DISPLAY_FLAGS_SYNC_POSEDGE = BIT(11),
/* drive sync on neg. edge */
DISPLAY_FLAGS_SYNC_NEGEDGE = BIT(12),
};
/*
* A single signal can be specified via a range of minimal and maximal values
* with a typical value, that lies somewhere inbetween.
*/
struct timing_entry {
u32 min;
u32 typ;
u32 max;
};
/*
* Single "mode" entry. This describes one set of signal timings a display can
* have in one setting. This struct can later be converted to struct videomode
* (see include/video/videomode.h). As each timing_entry can be defined as a
* range, one struct display_timing may become multiple struct videomodes.
*
* Example: hsync active high, vsync active low
*
* Active Video
* Video ______________________XXXXXXXXXXXXXXXXXXXXXX_____________________
* |<- sync ->|<- back ->|<----- active ----->|<- front ->|<- sync..
* | | porch | | porch |
*
* HSync _|¯¯¯¯¯¯¯¯¯¯|___________________________________________|¯¯¯¯¯¯¯¯¯
*
* VSync ¯|__________|¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|_________
*/
struct display_timing {
struct timing_entry pixelclock;
struct timing_entry hactive; /* hor. active video */
struct timing_entry hfront_porch; /* hor. front porch */
struct timing_entry hback_porch; /* hor. back porch */
struct timing_entry hsync_len; /* hor. sync len */
struct timing_entry vactive; /* ver. active video */
struct timing_entry vfront_porch; /* ver. front porch */
struct timing_entry vback_porch; /* ver. back porch */
struct timing_entry vsync_len; /* ver. sync len */
enum display_flags flags; /* display flags */
};
/*
* This describes all timing settings a display provides.
* The native_mode is the default setting for this display.
* Drivers that can handle multiple videomodes should work with this struct and
* convert each entry to the desired end result.
*/
struct display_timings {
unsigned int num_timings;
unsigned int native_mode;
struct display_timing **timings;
};
/* get one entry from struct display_timings */
static inline struct display_timing *display_timings_get(const struct
display_timings *disp,
unsigned int index)
{
if (disp->num_timings > index)
return disp->timings[index];
else
return NULL;
}
void display_timings_release(struct display_timings *disp);
#endif
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| atmel_lcdc.h | File | 6.15 KB | 0644 |
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| aty128.h | File | 13.27 KB | 0644 |
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| broadsheetfb.h | File | 2.12 KB | 0644 |
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| cirrus.h | File | 5.67 KB | 0644 |
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| cmdline.h | File | 382 B | 0644 |
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| cvisionppc.h | File | 1.54 KB | 0644 |
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| da8xx-fb.h | File | 1.96 KB | 0644 |
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| display_timing.h | File | 3.11 KB | 0644 |
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| edid.h | File | 228 B | 0644 |
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| gbe.h | File | 10.44 KB | 0644 |
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| hecubafb.h | File | 1.5 KB | 0644 |
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| ili9320.h | File | 5.66 KB | 0644 |
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| imx-ipu-image-convert.h | File | 6.53 KB | 0644 |
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| imx-ipu-v3.h | File | 16.38 KB | 0644 |
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| kyro.h | File | 1.97 KB | 0644 |
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| mach64.h | File | 46.93 KB | 0644 |
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| maxinefb.h | File | 1.24 KB | 0644 |
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| metronomefb.h | File | 1.48 KB | 0644 |
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| mipi_display.h | File | 4.96 KB | 0644 |
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| mmp_disp.h | File | 7.06 KB | 0644 |
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| neomagic.h | File | 4.9 KB | 0644 |
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| newport.h | File | 18.68 KB | 0644 |
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| nomodeset.h | File | 137 B | 0644 |
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| of_display_timing.h | File | 814 B | 0644 |
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| of_videomode.h | File | 367 B | 0644 |
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| omapfb_dss.h | File | 23.82 KB | 0644 |
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| omapvrfb.h | File | 1.79 KB | 0644 |
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| permedia2.h | File | 8.96 KB | 0644 |
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| platform_lcd.h | File | 440 B | 0644 |
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| pm3fb.h | File | 45.31 KB | 0644 |
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| pmag-ba-fb.h | File | 1.02 KB | 0644 |
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| pmagb-b-fb.h | File | 2.34 KB | 0644 |
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| pxa168fb.h | File | 2.53 KB | 0644 |
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| radeon.h | File | 109.22 KB | 0644 |
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| s1d13xxxfb.h | File | 9.95 KB | 0644 |
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| sa1100fb.h | File | 1.26 KB | 0644 |
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| samsung_fimd.h | File | 17.15 KB | 0644 |
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| sh_mobile_lcdc.h | File | 5.99 KB | 0644 |
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| sisfb.h | File | 606 B | 0644 |
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| sstfb.h | File | 11.07 KB | 0644 |
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| sticore.h | File | 11.67 KB | 0644 |
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| tdfx.h | File | 5.32 KB | 0644 |
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| tgafb.h | File | 6.94 KB | 0644 |
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| trident.h | File | 3.23 KB | 0644 |
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| udlfb.h | File | 2.91 KB | 0644 |
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| uvesafb.h | File | 2.8 KB | 0644 |
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| vga.h | File | 14.54 KB | 0644 |
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| videomode.h | File | 1.35 KB | 0644 |
|