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video: Handle HAS_IOPORT dependencies

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In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at
compile time. We thus need to #ifdef functions and their callsites which
unconditionally use these I/O accessors. In the include/video/vga.h
these are conveniently all those functions with the vga_io_* prefix.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Niklas Schnelle 2024-05-14 15:08:58 +02:00 committed by Helge Deller
parent 8400291e28
commit 8423895d45
1 changed files with 42 additions and 16 deletions
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58
include/video/vga.h
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@ -197,9 +197,26 @@ struct vgastate {
extern int save_vga(struct vgastate *state);
extern int restore_vga(struct vgastate *state);
static inline unsigned char vga_mm_r (void __iomem *regbase, unsigned short port)
{
return readb (regbase + port);
}
static inline void vga_mm_w (void __iomem *regbase, unsigned short port, unsigned char val)
{
writeb (val, regbase + port);
}
static inline void vga_mm_w_fast (void __iomem *regbase, unsigned short port,
unsigned char reg, unsigned char val)
{
writew (VGA_OUT16VAL (val, reg), regbase + port);
}
/*
* generic VGA port read/write
*/
#ifdef CONFIG_HAS_IOPORT
static inline unsigned char vga_io_r (unsigned short port)
{
@ -217,22 +234,6 @@ static inline void vga_io_w_fast (unsigned short port, unsigned char reg,
outw(VGA_OUT16VAL (val, reg), port);
}
static inline unsigned char vga_mm_r (void __iomem *regbase, unsigned short port)
{
return readb (regbase + port);
}
static inline void vga_mm_w (void __iomem *regbase, unsigned short port, unsigned char val)
{
writeb (val, regbase + port);
}
static inline void vga_mm_w_fast (void __iomem *regbase, unsigned short port,
unsigned char reg, unsigned char val)
{
writew (VGA_OUT16VAL (val, reg), regbase + port);
}
static inline unsigned char vga_r (void __iomem *regbase, unsigned short port)
{
if (regbase)
@ -258,7 +259,24 @@ static inline void vga_w_fast (void __iomem *regbase, unsigned short port,
else
vga_io_w_fast (port, reg, val);
}
#else /* CONFIG_HAS_IOPORT */
static inline unsigned char vga_r (void __iomem *regbase, unsigned short port)
{
return vga_mm_r (regbase, port);
}
static inline void vga_w (void __iomem *regbase, unsigned short port, unsigned char val)
{
vga_mm_w (regbase, port, val);
}
static inline void vga_w_fast (void __iomem *regbase, unsigned short port,
unsigned char reg, unsigned char val)
{
vga_mm_w_fast (regbase, port, reg, val);
}
#endif /* CONFIG_HAS_IOPORT */
/*
* VGA CRTC register read/write
@ -280,6 +298,7 @@ static inline void vga_wcrt (void __iomem *regbase, unsigned char reg, unsigned
#endif /* VGA_OUTW_WRITE */
}
#ifdef CONFIG_HAS_IOPORT
static inline unsigned char vga_io_rcrt (unsigned char reg)
{
vga_io_w (VGA_CRT_IC, reg);
@ -295,6 +314,7 @@ static inline void vga_io_wcrt (unsigned char reg, unsigned char val)
vga_io_w (VGA_CRT_DC, val);
#endif /* VGA_OUTW_WRITE */
}
#endif /* CONFIG_HAS_IOPORT */
static inline unsigned char vga_mm_rcrt (void __iomem *regbase, unsigned char reg)
{
@ -333,6 +353,7 @@ static inline void vga_wseq (void __iomem *regbase, unsigned char reg, unsigned
#endif /* VGA_OUTW_WRITE */
}
#ifdef CONFIG_HAS_IOPORT
static inline unsigned char vga_io_rseq (unsigned char reg)
{
vga_io_w (VGA_SEQ_I, reg);
@ -348,6 +369,7 @@ static inline void vga_io_wseq (unsigned char reg, unsigned char val)
vga_io_w (VGA_SEQ_D, val);
#endif /* VGA_OUTW_WRITE */
}
#endif /* CONFIG_HAS_IOPORT */
static inline unsigned char vga_mm_rseq (void __iomem *regbase, unsigned char reg)
{
@ -385,6 +407,7 @@ static inline void vga_wgfx (void __iomem *regbase, unsigned char reg, unsigned
#endif /* VGA_OUTW_WRITE */
}
#ifdef CONFIG_HAS_IOPORT
static inline unsigned char vga_io_rgfx (unsigned char reg)
{
vga_io_w (VGA_GFX_I, reg);
@ -400,6 +423,7 @@ static inline void vga_io_wgfx (unsigned char reg, unsigned char val)
vga_io_w (VGA_GFX_D, val);
#endif /* VGA_OUTW_WRITE */
}
#endif /* CONFIG_HAS_IOPORT */
static inline unsigned char vga_mm_rgfx (void __iomem *regbase, unsigned char reg)
{
@ -434,6 +458,7 @@ static inline void vga_wattr (void __iomem *regbase, unsigned char reg, unsigned
vga_w (regbase, VGA_ATT_W, val);
}
#ifdef CONFIG_HAS_IOPORT
static inline unsigned char vga_io_rattr (unsigned char reg)
{
vga_io_w (VGA_ATT_IW, reg);
@ -445,6 +470,7 @@ static inline void vga_io_wattr (unsigned char reg, unsigned char val)
vga_io_w (VGA_ATT_IW, reg);
vga_io_w (VGA_ATT_W, val);
}
#endif /* CONFIG_HAS_IOPORT */
static inline unsigned char vga_mm_rattr (void __iomem *regbase, unsigned char reg)
{