/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef UDL_PROTO_H #define UDL_PROTO_H #include <linux/bits.h> #define UDL_MSG_BULK 0xaf /* Register access */ #define UDL_CMD_WRITEREG 0x20 /* See register constants below */ /* Framebuffer access */ #define UDL_CMD_WRITERAW8 0x60 /* 8 bit raw write command. */ #define UDL_CMD_WRITERL8 0x61 /* 8 bit run length command. */ #define UDL_CMD_WRITECOPY8 0x62 /* 8 bit copy command. */ #define UDL_CMD_WRITERLX8 0x63 /* 8 bit extended run length command. */ #define UDL_CMD_WRITERAW16 0x68 /* 16 bit raw write command. */ #define UDL_CMD_WRITERL16 0x69 /* 16 bit run length command. */ #define UDL_CMD_WRITECOPY16 0x6a /* 16 bit copy command. */ #define UDL_CMD_WRITERLX16 0x6b /* 16 bit extended run length command. */ /* Color depth */ #define UDL_REG_COLORDEPTH 0x00 #define UDL_COLORDEPTH_16BPP 0 #define UDL_COLORDEPTH_24BPP 1 /* Display-mode settings */ #define UDL_REG_XDISPLAYSTART 0x01 #define UDL_REG_XDISPLAYEND 0x03 #define UDL_REG_YDISPLAYSTART 0x05 #define UDL_REG_YDISPLAYEND 0x07 #define UDL_REG_XENDCOUNT 0x09 #define UDL_REG_HSYNCSTART 0x0b #define UDL_REG_HSYNCEND 0x0d #define UDL_REG_HPIXELS 0x0f #define UDL_REG_YENDCOUNT 0x11 #define UDL_REG_VSYNCSTART 0x13 #define UDL_REG_VSYNCEND 0x15 #define UDL_REG_VPIXELS 0x17 #define UDL_REG_PIXELCLOCK5KHZ 0x1b /* On/Off for driving the DisplayLink framebuffer to the display */ #define UDL_REG_BLANKMODE 0x1f #define UDL_BLANKMODE_ON 0x00 /* hsync and vsync on, visible */ #define UDL_BLANKMODE_BLANKED 0x01 /* hsync and vsync on, blanked */ #define UDL_BLANKMODE_VSYNC_OFF 0x03 /* vsync off, blanked */ #define UDL_BLANKMODE_HSYNC_OFF 0x05 /* hsync off, blanked */ #define UDL_BLANKMODE_POWERDOWN 0x07 /* powered off; requires modeset */ /* Framebuffer address */ #define UDL_REG_BASE16BPP_ADDR2 0x20 #define UDL_REG_BASE16BPP_ADDR1 0x21 #define UDL_REG_BASE16BPP_ADDR0 0x22 #define UDL_REG_BASE8BPP_ADDR2 0x26 #define UDL_REG_BASE8BPP_ADDR1 0x27 #define UDL_REG_BASE8BPP_ADDR0 0x28 #define UDL_BASE_ADDR0_MASK GENMASK(7, 0) #define UDL_BASE_ADDR1_MASK GENMASK(15, 8) #define UDL_BASE_ADDR2_MASK GENMASK(23, 16) /* Lock/unlock video registers */ #define UDL_REG_VIDREG 0xff #define UDL_VIDREG_LOCK 0x00 #define UDL_VIDREG_UNLOCK 0xff #endif