bochs_vga_write() takes 'index' as one argument, but never uses it.
While we are here, use macros instead of magic numbers for the VGA IO port register name and value.
Signed-off-by: Bin Meng bmeng@tinylab.org ---
drivers/video/bochs.c | 7 ++++--- drivers/video/bochs.h | 5 ++++- 2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/video/bochs.c b/drivers/video/bochs.c index fa0283c158..2d4526c714 100644 --- a/drivers/video/bochs.c +++ b/drivers/video/bochs.c @@ -27,9 +27,9 @@ static int bochs_read(void *mmio, int index) return readw(mmio + MMIO_BASE + index * 2); }
-static void bochs_vga_write(int index, uint8_t val) +static void bochs_vga_write(uint8_t val) { - outb(val, VGA_INDEX); + outb(val, VGA_ATT_W); }
static int bochs_init_fb(struct udevice *dev) @@ -78,7 +78,8 @@ static int bochs_init_fb(struct udevice *dev) bochs_write(mmio, INDEX_Y_OFFSET, 0); bochs_write(mmio, INDEX_ENABLE, ENABLED | LFB_ENABLED);
- bochs_vga_write(0, 0x20); /* disable blanking */ + /* disable blanking */ + bochs_vga_write(VGA_AR_ENABLE_DISPLAY);
plat->base = fb;
diff --git a/drivers/video/bochs.h b/drivers/video/bochs.h index 4c8ec83a55..71d3d60141 100644 --- a/drivers/video/bochs.h +++ b/drivers/video/bochs.h @@ -6,7 +6,10 @@ #ifndef __BOCHS_H #define __BOCHS_H
-#define VGA_INDEX 0x3c0 +#define VGA_INDEX 0x3c0 + +#define VGA_ATT_W 0x3c0 +#define VGA_AR_ENABLE_DISPLAY 0x20
#define IOPORT_INDEX 0x01ce #define IOPORT_DATA 0x01cf