summaryrefslogtreecommitdiff
path: root/include/linux/svga.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/svga.h')
-rw-r--r--include/linux/svga.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/include/linux/svga.h b/include/linux/svga.h
new file mode 100644
index 00000000..bfa68e83
--- /dev/null
+++ b/include/linux/svga.h
@@ -0,0 +1,124 @@
+#ifndef _LINUX_SVGA_H
+#define _LINUX_SVGA_H
+
+#include <linux/pci.h>
+#include <video/vga.h>
+
+/* Terminator for register set */
+
+#define VGA_REGSET_END_VAL 0xFF
+#define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0}
+
+struct vga_regset {
+ u8 regnum;
+ u8 lowbit;
+ u8 highbit;
+};
+
+/* ------------------------------------------------------------------------- */
+
+#define SVGA_FORMAT_END_VAL 0xFFFF
+#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}
+
+struct svga_fb_format {
+ /* var part */
+ u32 bits_per_pixel;
+ struct fb_bitfield red;
+ struct fb_bitfield green;
+ struct fb_bitfield blue;
+ struct fb_bitfield transp;
+ u32 nonstd;
+ /* fix part */
+ u32 type;
+ u32 type_aux;
+ u32 visual;
+ u32 xpanstep;
+ u32 xresstep;
+};
+
+struct svga_timing_regs {
+ const struct vga_regset *h_total_regs;
+ const struct vga_regset *h_display_regs;
+ const struct vga_regset *h_blank_start_regs;
+ const struct vga_regset *h_blank_end_regs;
+ const struct vga_regset *h_sync_start_regs;
+ const struct vga_regset *h_sync_end_regs;
+
+ const struct vga_regset *v_total_regs;
+ const struct vga_regset *v_display_regs;
+ const struct vga_regset *v_blank_start_regs;
+ const struct vga_regset *v_blank_end_regs;
+ const struct vga_regset *v_sync_start_regs;
+ const struct vga_regset *v_sync_end_regs;
+};
+
+struct svga_pll {
+ u16 m_min;
+ u16 m_max;
+ u16 n_min;
+ u16 n_max;
+ u16 r_min;
+ u16 r_max; /* r_max < 32 */
+ u32 f_vco_min;
+ u32 f_vco_max;
+ u32 f_base;
+};
+
+
+/* Write a value to the attribute register */
+
+static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data)
+{
+ vga_r(regbase, VGA_IS1_RC);
+ vga_w(regbase, VGA_ATT_IW, index);
+ vga_w(regbase, VGA_ATT_W, data);
+}
+
+/* Write a value to a sequence register with a mask */
+
+static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
+{
+ vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask));
+}
+
+/* Write a value to a CRT register with a mask */
+
+static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
+{
+ vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask));
+}
+
+static inline int svga_primary_device(struct pci_dev *dev)
+{
+ u16 flags;
+ pci_read_config_word(dev, PCI_COMMAND, &flags);
+ return (flags & PCI_COMMAND_IO);
+}
+
+
+void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
+void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
+
+void svga_set_default_gfx_regs(void __iomem *regbase);
+void svga_set_default_atc_regs(void __iomem *regbase);
+void svga_set_default_seq_regs(void __iomem *regbase);
+void svga_set_default_crt_regs(void __iomem *regbase);
+void svga_set_textmode_vga_regs(void __iomem *regbase);
+
+void svga_settile(struct fb_info *info, struct fb_tilemap *map);
+void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
+void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
+void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
+void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor);
+int svga_get_tilemax(struct fb_info *info);
+void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
+ struct fb_var_screeninfo *var);
+
+int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
+int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
+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);
+
+int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
+
+#endif /* _LINUX_SVGA_H */
+