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/*
* arch/ubicom32/include/asm/vdc_tio.h
* Ubicom32 architecture VDC TIO definitions.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#ifndef _ASM_UBICOM32_VDC_TIO_H
#define _ASM_UBICOM32_VDC_TIO_H
#include <asm/devtree.h>
#define VDCTIO_VP_VERSION 5
#define VDCTIO_SCALE_FLAG_VSUB (1 << 9)
#define VDCTIO_SCALE_FLAG_YUV_SCAN_ORDER (1 << 8)
#define VDCTIO_SCALE_FLAG_YUV_BLOCK_ORDER (1 << 7)
#define VDCTIO_SCALE_FLAG_YUV (1 << 6)
#define VDCTIO_SCALE_FLAG_VRANGE_16_255 (1 << 5)
#define VDCTIO_SCALE_FLAG_VRANGE_0_255 (1 << 4)
#define VDCTIO_SCALE_FLAG_HSUB_2_1 (1 << 3)
#define VDCTIO_SCALE_FLAG_HSUB_1_1 (1 << 2)
#define VDCTIO_SCALE_FLAG_SET_FRAME_BUFFER (1 << 1)
#define VDCTIO_SCALE_FLAG_ENABLE (1 << 0)
#define VDCTIO_NEXT_FRAME_FLAG_YUV_BIT 0
#define VDCTIO_NEXT_FRAME_FLAG_YUV (1 << (VDCTIO_NEXT_FRAME_FLAG_YUV_BIT))
#define VDCTIO_CAPS_SUPPORTS_SCALING (1 << 0)
#define VDCTIO_COMMAND_START (1 << 3)
#define VDCTIO_COMMAND_SET_COEFF (1 << 2)
#define VDCTIO_COMMAND_SET_LUT (1 << 1)
#define VDCTIO_COMMAND_SET_SCALE_MODE (1 << 0)
/*
* Command / Data registers to access the VDC
*/
struct vdc_tio_vp_regs {
/*
* Version of this TIO register map
*/
u32_t version;
volatile u32_t command;
/*
* Next frame pointer, when the command VDCTIO_COMMAND_SET_FRAME_BUFFER is set,
* the vdc will take the pointer here and display it.
*/
void *next_frame;
u32_t next_frame_flags;
/*
* These map directly into the PIXP registers 0x20-0x80.
* DO NOT change the order of these three variables.
*/
u32_t red_lut[6];
u32_t blue_lut[6];
u32_t green_lut[13];
/*
* These map directly into the PIXP registers 0x04, 0x08
*/
u32_t coeff0;
u32_t coeff1;
/*
* There are used to set the scaling parameters
*/
u32_t x_in;
u32_t x_out;
u32_t y_in;
u32_t y_out;
u32_t scale_flags;
/*
* Current frame number, monotonically increasing number
*/
u32_t frame_number;
/*
* These variables tell the guest OS what the underlying hardware looks like
*/
u32_t caps;
u32_t xres;
u32_t yres;
u32_t fb_align;
u8_t bpp;
u8_t rbits;
u8_t gbits;
u8_t bbits;
u8_t rshift;
u8_t gshift;
u8_t bshift;
};
/*
* Devtree node for VDC
*/
struct vdc_tio_node {
struct devtree_node dn;
struct vdc_tio_vp_regs *regs;
};
extern void vdc_tio_init(void);
#endif /* _ASM_UBICOM32_VDC_TIO_H */
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