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mdacon: make mda_vram_base u16 *

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Given every user of mda_vram_base expects a pointer, let
mda_vram_base be a pointer to u16.

The offset calculation in mda_detect had to be adjusted by / 2 (due to
different pointer arithmetic now).

We introduce a cast to a value returned from VGA_MAP_MEM. But I will
change VGA_MAP_MEM to return a pointer later too. But vgacon needs a
similar change first.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This commit is contained in:
Jiri Slaby 2017-06-14 17:40:56 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 08cfe9f081
commit 734f13b11d
1 changed files with 6 additions and 6 deletions
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12
drivers/video/console/mdacon.c
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@ -48,7 +48,7 @@ static DEFINE_SPINLOCK(mda_lock);
/* description of the hardware layout */
static unsigned long mda_vram_base; /* Base of video memory */
static u16 *mda_vram_base; /* Base of video memory */
static unsigned long mda_vram_len; /* Size of video memory */
static unsigned int mda_num_columns; /* Number of text columns */
static unsigned int mda_num_lines; /* Number of text lines */
@ -205,8 +205,8 @@ static int mda_detect(void)
/* do a memory check */
p = (u16 *) mda_vram_base;
q = (u16 *) (mda_vram_base + 0x01000);
p = mda_vram_base;
q = mda_vram_base + 0x01000 / 2;
p_save = scr_readw(p);
q_save = scr_readw(q);
@ -323,7 +323,7 @@ static const char *mdacon_startup(void)
mda_num_lines = 25;
mda_vram_len = 0x01000;
mda_vram_base = VGA_MAP_MEM(0xb0000, mda_vram_len);
mda_vram_base = (u16 *)VGA_MAP_MEM(0xb0000, mda_vram_len);
mda_index_port = 0x3b4;
mda_value_port = 0x3b5;
@ -420,7 +420,7 @@ static void mdacon_invert_region(struct vc_data *c, u16 *p, int count)
}
}
#define MDA_ADDR(x,y) ((u16 *) mda_vram_base + (y)*mda_num_columns + (x))
#define MDA_ADDR(x, y) (mda_vram_base + (y)*mda_num_columns + (x))
static void mdacon_putc(struct vc_data *c, int ch, int y, int x)
{
@ -463,7 +463,7 @@ static int mdacon_blank(struct vc_data *c, int blank, int mode_switch)
{
if (mda_type == TYPE_MDA) {
if (blank)
scr_memsetw((void *)mda_vram_base,
scr_memsetw(mda_vram_base,
mda_convert_attr(c->vc_video_erase_char),
c->vc_screenbuf_size);
/* Tell console.c that it has to restore the screen itself */