diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/include/asm/vdc_tio.h')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/include/asm/vdc_tio.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/include/asm/vdc_tio.h b/target/linux/ubicom32/files/arch/ubicom32/include/asm/vdc_tio.h new file mode 100644 index 000000000..cc45fc552 --- /dev/null +++ b/target/linux/ubicom32/files/arch/ubicom32/include/asm/vdc_tio.h @@ -0,0 +1,129 @@ +/* + * 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 */ |