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126 lines
3.7 KiB
126 lines
3.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_SVGA_H
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#define _LINUX_SVGA_H
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#include <linux/pci.h>
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#include <video/vga.h>
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/* Terminator for register set */
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#define VGA_REGSET_END_VAL 0xFF
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#define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0}
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struct vga_regset {
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u8 regnum;
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u8 lowbit;
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u8 highbit;
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};
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/* ------------------------------------------------------------------------- */
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#define SVGA_FORMAT_END_VAL 0xFFFF
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#define SVGA_FORMAT_END {SVGA_FORMAT_END_VAL, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, 0, 0, 0, 0, 0, 0}
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struct svga_fb_format {
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/* var part */
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u32 bits_per_pixel;
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struct fb_bitfield red;
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struct fb_bitfield green;
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struct fb_bitfield blue;
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struct fb_bitfield transp;
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u32 nonstd;
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/* fix part */
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u32 type;
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u32 type_aux;
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u32 visual;
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u32 xpanstep;
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u32 xresstep;
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};
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struct svga_timing_regs {
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const struct vga_regset *h_total_regs;
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const struct vga_regset *h_display_regs;
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const struct vga_regset *h_blank_start_regs;
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const struct vga_regset *h_blank_end_regs;
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const struct vga_regset *h_sync_start_regs;
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const struct vga_regset *h_sync_end_regs;
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const struct vga_regset *v_total_regs;
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const struct vga_regset *v_display_regs;
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const struct vga_regset *v_blank_start_regs;
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const struct vga_regset *v_blank_end_regs;
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const struct vga_regset *v_sync_start_regs;
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const struct vga_regset *v_sync_end_regs;
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};
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struct svga_pll {
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u16 m_min;
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u16 m_max;
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u16 n_min;
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u16 n_max;
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u16 r_min;
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u16 r_max; /* r_max < 32 */
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u32 f_vco_min;
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u32 f_vco_max;
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u32 f_base;
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};
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/* Write a value to the attribute register */
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static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data)
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{
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vga_r(regbase, VGA_IS1_RC);
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vga_w(regbase, VGA_ATT_IW, index);
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vga_w(regbase, VGA_ATT_W, data);
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}
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/* Write a value to a sequence register with a mask */
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static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
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{
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vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask));
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}
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/* Write a value to a CRT register with a mask */
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static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
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{
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vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask));
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}
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static inline int svga_primary_device(struct pci_dev *dev)
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{
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u16 flags;
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pci_read_config_word(dev, PCI_COMMAND, &flags);
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return (flags & PCI_COMMAND_IO);
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}
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void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
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void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
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void svga_set_default_gfx_regs(void __iomem *regbase);
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void svga_set_default_atc_regs(void __iomem *regbase);
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void svga_set_default_seq_regs(void __iomem *regbase);
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void svga_set_default_crt_regs(void __iomem *regbase);
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void svga_set_textmode_vga_regs(void __iomem *regbase);
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void svga_settile(struct fb_info *info, struct fb_tilemap *map);
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void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
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void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
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void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
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void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor);
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int svga_get_tilemax(struct fb_info *info);
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void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
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struct fb_var_screeninfo *var);
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int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
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int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
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void svga_set_timings(void __iomem *regbase, const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
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int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
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#endif /* _LINUX_SVGA_H */
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