9869e40df1
Add constants for the registers the contain various display-mode parameters and update the mode-setting function. No functional changes. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221006095355.23579-13-tzimmermann@suse.de
32 lines
1022 B
C
32 lines
1022 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef UDL_PROTO_H
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#define UDL_PROTO_H
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#define UDL_COLORDEPTH_16BPP 0
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/* Display-mode settings */
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#define UDL_REG_XDISPLAYSTART 0x01
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#define UDL_REG_XDISPLAYEND 0x03
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#define UDL_REG_YDISPLAYSTART 0x05
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#define UDL_REG_YDISPLAYEND 0x07
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#define UDL_REG_XENDCOUNT 0x09
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#define UDL_REG_HSYNCSTART 0x0b
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#define UDL_REG_HSYNCEND 0x0d
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#define UDL_REG_HPIXELS 0x0f
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#define UDL_REG_YENDCOUNT 0x11
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#define UDL_REG_VSYNCSTART 0x13
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#define UDL_REG_VSYNCEND 0x15
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#define UDL_REG_VPIXELS 0x17
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#define UDL_REG_PIXELCLOCK5KHZ 0x1b
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/* On/Off for driving the DisplayLink framebuffer to the display */
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#define UDL_REG_BLANKMODE 0x1f
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#define UDL_BLANKMODE_ON 0x00 /* hsync and vsync on, visible */
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#define UDL_BLANKMODE_BLANKED 0x01 /* hsync and vsync on, blanked */
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#define UDL_BLANKMODE_VSYNC_OFF 0x03 /* vsync off, blanked */
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#define UDL_BLANKMODE_HSYNC_OFF 0x05 /* hsync off, blanked */
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#define UDL_BLANKMODE_POWERDOWN 0x07 /* powered off; requires modeset */
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#endif
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