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vga: add vbe_enabled() helper 

Makes code a bit easier to read.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2016-04-26 14:11:34 +02:00
parent 3bf1817079
commit bfa0f151a5
1 changed files with 9 additions and 4 deletions
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13
hw/display/vga.c
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@ -142,6 +142,11 @@ static uint32_t expand4[256];
static uint16_t expand2[256];
static uint8_t expand4to8[16];
static inline bool vbe_enabled(VGACommonState *s)
{
return s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED;
}
static void vga_update_memory_access(VGACommonState *s)
{
hwaddr base, offset, size;
@ -564,7 +569,7 @@ static void vbe_fixup_regs(VGACommonState *s)
uint16_t *r = s->vbe_regs;
uint32_t bits, linelength, maxy, offset;
if (!(r[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
if (!vbe_enabled(s)) {
/* vbe is turned off -- nothing to do */
return;
}
@ -1058,7 +1063,7 @@ static void vga_get_offsets(VGACommonState *s,
{
uint32_t start_addr, line_offset, line_compare;
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
if (vbe_enabled(s)) {
line_offset = s->vbe_line_offset;
start_addr = s->vbe_start_addr;
line_compare = 65535;
@ -1383,7 +1388,7 @@ static int vga_get_bpp(VGACommonState *s)
{
int ret;
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
if (vbe_enabled(s)) {
ret = s->vbe_regs[VBE_DISPI_INDEX_BPP];
} else {
ret = 0;
@ -1395,7 +1400,7 @@ static void vga_get_resolution(VGACommonState *s, int *pwidth, int *pheight)
{
int width, height;
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
if (vbe_enabled(s)) {
width = s->vbe_regs[VBE_DISPI_INDEX_XRES];
height = s->vbe_regs[VBE_DISPI_INDEX_YRES];
} else {