diff options
Diffstat (limited to 'drivers/video/fbdev/acornfb.h')
| -rw-r--r-- | drivers/video/fbdev/acornfb.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/video/fbdev/acornfb.h b/drivers/video/fbdev/acornfb.h new file mode 100644 index 000000000..f8df4ecb4 --- /dev/null +++ b/drivers/video/fbdev/acornfb.h @@ -0,0 +1,166 @@ +/* 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 |