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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/drivers/video/acornfb.h
*
* Copyright (C) 1998,1999 Russell King
*
* Frame buffer code for Acorn platforms
*/
#if defined(HAS_VIDC20)
#include <asm/hardware/iomd.h>
#define VIDC_PALETTE_SIZE 256
#define VIDC_NAME "VIDC20"
#endif
#define EXTEND8(x) ((x)|(x)<<8)
#define EXTEND4(x) ((x)|(x)<<4|(x)<<8|(x)<<12)
struct vidc20_palette {
u_int red:8;
u_int green:8;
u_int blue:8;
u_int ext:4;
u_int unused:4;
};
struct vidc_palette {
u_int red:4;
u_int green:4;
u_int blue:4;
u_int trans:1;
u_int sbz1:13;
u_int reg:4;
u_int sbz2:2;
};
union palette {
struct vidc20_palette vidc20;
struct vidc_palette vidc;
u_int p;
};
struct acornfb_par {
struct device *dev;
unsigned long screen_end;
unsigned int dram_size;
unsigned int vram_half_sam;
unsigned int palette_size;
signed int montype;
unsigned int using_vram : 1;
unsigned int dpms : 1;
union palette palette[VIDC_PALETTE_SIZE];
u32 pseudo_palette[16];
};
struct vidc_timing {
u_int h_cycle;
u_int h_sync_width;
u_int h_border_start;
u_int h_display_start;
u_int h_display_end;
u_int h_border_end;
u_int h_interlace;
u_int v_cycle;
u_int v_sync_width;
u_int v_border_start;
u_int v_display_start;
u_int v_display_end;
u_int v_border_end;
u_int control;
/* VIDC20 only */
u_int pll_ctl;
};
struct modey_params {
u_int y_res;
u_int u_margin;
u_int b_margin;
u_int vsync_len;
u_int vf;
};
struct modex_params {
u_int x_res;
u_int l_margin;
u_int r_margin;
u_int hsync_len;
u_int clock;
u_int hf;
const struct modey_params *modey;
};
#ifdef HAS_VIDC20
/*
* VIDC20 registers
*/
#define VIDC20_CTRL 0xe0000000
#define VIDC20_CTRL_PIX_VCLK (0 << 0)
#define VIDC20_CTRL_PIX_HCLK (1 << 0)
#define VIDC20_CTRL_PIX_RCLK (2 << 0)
#define VIDC20_CTRL_PIX_CK (0 << 2)
#define VIDC20_CTRL_PIX_CK2 (1 << 2)
#define VIDC20_CTRL_PIX_CK3 (2 << 2)
#define VIDC20_CTRL_PIX_CK4 (3 << 2)
#define VIDC20_CTRL_PIX_CK5 (4 << 2)
#define VIDC20_CTRL_PIX_CK6 (5 << 2)
#define VIDC20_CTRL_PIX_CK7 (6 << 2)
#define VIDC20_CTRL_PIX_CK8 (7 << 2)
#define VIDC20_CTRL_1BPP (0 << 5)
#define VIDC20_CTRL_2BPP (1 << 5)
#define VIDC20_CTRL_4BPP (2 << 5)
#define VIDC20_CTRL_8BPP (3 << 5)
#define VIDC20_CTRL_16BPP (4 << 5)
#define VIDC20_CTRL_32BPP (6 << 5)
#define VIDC20_CTRL_FIFO_NS (0 << 8)
#define VIDC20_CTRL_FIFO_4 (1 << 8)
#define VIDC20_CTRL_FIFO_8 (2 << 8)
#define VIDC20_CTRL_FIFO_12 (3 << 8)
#define VIDC20_CTRL_FIFO_16 (4 << 8)
#define VIDC20_CTRL_FIFO_20 (5 << 8)
#define VIDC20_CTRL_FIFO_24 (6 << 8)
#define VIDC20_CTRL_FIFO_28 (7 << 8)
#define VIDC20_CTRL_INT (1 << 12)
#define VIDC20_CTRL_DUP (1 << 13)
#define VIDC20_CTRL_PDOWN (1 << 14)
#define VIDC20_ECTL 0xc0000000
#define VIDC20_ECTL_REG(x) ((x) & 0xf3)
#define VIDC20_ECTL_ECK (1 << 2)
#define VIDC20_ECTL_REDPED (1 << 8)
#define VIDC20_ECTL_GREENPED (1 << 9)
#define VIDC20_ECTL_BLUEPED (1 << 10)
#define VIDC20_ECTL_DAC (1 << 12)
#define VIDC20_ECTL_LCDGS (1 << 13)
#define VIDC20_ECTL_HRM (1 << 14)
#define VIDC20_ECTL_HS_MASK (3 << 16)
#define VIDC20_ECTL_HS_HSYNC (0 << 16)
#define VIDC20_ECTL_HS_NHSYNC (1 << 16)
#define VIDC20_ECTL_HS_CSYNC (2 << 16)
#define VIDC20_ECTL_HS_NCSYNC (3 << 16)
#define VIDC20_ECTL_VS_MASK (3 << 18)
#define VIDC20_ECTL_VS_VSYNC (0 << 18)
#define VIDC20_ECTL_VS_NVSYNC (1 << 18)
#define VIDC20_ECTL_VS_CSYNC (2 << 18)
#define VIDC20_ECTL_VS_NCSYNC (3 << 18)
#define VIDC20_DCTL 0xf0000000
/* 0-9 = number of words in scanline */
#define VIDC20_DCTL_SNA (1 << 12)
#define VIDC20_DCTL_HDIS (1 << 13)
#define VIDC20_DCTL_BUS_NS (0 << 16)
#define VIDC20_DCTL_BUS_D31_0 (1 << 16)
#define VIDC20_DCTL_BUS_D63_32 (2 << 16)
#define VIDC20_DCTL_BUS_D63_0 (3 << 16)
#define VIDC20_DCTL_VRAM_DIS (0 << 18)
#define VIDC20_DCTL_VRAM_PXCLK (1 << 18)
#define VIDC20_DCTL_VRAM_PXCLK2 (2 << 18)
#define VIDC20_DCTL_VRAM_PXCLK4 (3 << 18)
#endif
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