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pm2fb: hardware cursor support for the Permedia2

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This patch adds hardware cursor support for the Permedia 2 chip.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Krzysztof Helt 2007-10-16 01:29:16 -07:00 committed by Linus Torvalds
parent e84d436b3c
commit 2a36f9c497
2 changed files with 120 additions and 12 deletions
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125
drivers/video/pm2fb.c
View File

@ -1257,18 +1257,8 @@ static const u8 cursor_bits_lookup[16] = {
static int pm2vfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct pm2fb_par *par = info->par;
u8 mode;
u8 mode = PM2F_CURSORMODE_TYPE_X;
if (!hwcursor)
return -EINVAL; /* just to force soft_cursor() call */
/* Too large of a cursor or wrong bpp :-( */
if (cursor->image.width > 64 ||
cursor->image.height > 64 ||
cursor->image.depth > 1)
return -EINVAL;
mode = PM2F_CURSORMODE_TYPE_X;
if (cursor->enable)
mode |= PM2F_CURSORMODE_CURSOR_ENABLE;
@ -1369,11 +1359,122 @@ static int pm2vfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
static int pm2fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct pm2fb_par *par = info->par;
u8 mode;
if (!hwcursor)
return -EINVAL; /* just to force soft_cursor() call */
/* Too large of a cursor or wrong bpp :-( */
if (cursor->image.width > 64 ||
cursor->image.height > 64 ||
cursor->image.depth > 1)
return -EINVAL;
if (par->type == PM2_TYPE_PERMEDIA2V)
return pm2vfb_cursor(info, cursor);
return -ENXIO;
mode = 0;
if (cursor->enable)
mode = 0x43;
pm2_RDAC_WR(par, PM2I_RD_CURSOR_CONTROL, mode);
/*
* If the cursor is not be changed this means either we want the
* current cursor state (if enable is set) or we want to query what
* we can do with the cursor (if enable is not set)
*/
if (!cursor->set)
return 0;
if (cursor->set & FB_CUR_SETPOS) {
int x, y;
x = cursor->image.dx + 63;
y = cursor->image.dy + 63;
WAIT_FIFO(par, 4);
pm2_WR(par, PM2R_RD_CURSOR_X_LSB, x & 0xff);
pm2_WR(par, PM2R_RD_CURSOR_X_MSB, (x >> 8) & 0x7);
pm2_WR(par, PM2R_RD_CURSOR_Y_LSB, y & 0xff);
pm2_WR(par, PM2R_RD_CURSOR_Y_MSB, (y >> 8) & 0x7);
}
if (cursor->set & FB_CUR_SETCMAP) {
u32 fg_idx = cursor->image.fg_color;
u32 bg_idx = cursor->image.bg_color;
WAIT_FIFO(par, 7);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_ADDRESS, 1);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_DATA,
info->cmap.red[bg_idx] >> 8);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_DATA,
info->cmap.green[bg_idx] >> 8);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_DATA,
info->cmap.blue[bg_idx] >> 8);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_DATA,
info->cmap.red[fg_idx] >> 8);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_DATA,
info->cmap.green[fg_idx] >> 8);
pm2_WR(par, PM2R_RD_CURSOR_COLOR_DATA,
info->cmap.blue[fg_idx] >> 8);
}
if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
u8 *bitmap = (u8 *)cursor->image.data;
u8 *mask = (u8 *)cursor->mask;
int i;
WAIT_FIFO(par, 1);
pm2_WR(par, PM2R_RD_PALETTE_WRITE_ADDRESS, 0);
for (i = 0; i < cursor->image.height; i++) {
int j = (cursor->image.width + 7) >> 3;
int k = 8 - j;
WAIT_FIFO(par, 8);
for (; j > 0; j--) {
u8 data = *bitmap ^ *mask;
if (cursor->rop == ROP_COPY)
data = *mask & *bitmap;
/* bitmap data */
pm2_WR(par, PM2R_RD_CURSOR_DATA, data);
bitmap++;
mask++;
}
for (; k > 0; k--)
pm2_WR(par, PM2R_RD_CURSOR_DATA, 0);
}
for (; i < 64; i++) {
int j = 8;
WAIT_FIFO(par, 8);
while (j-- > 0)
pm2_WR(par, PM2R_RD_CURSOR_DATA, 0);
}
mask = (u8 *)cursor->mask;
for (i = 0; i < cursor->image.height; i++) {
int j = (cursor->image.width + 7) >> 3;
int k = 8 - j;
WAIT_FIFO(par, 8);
for (; j > 0; j--) {
/* mask */
pm2_WR(par, PM2R_RD_CURSOR_DATA, *mask);
mask++;
}
for (; k > 0; k--)
pm2_WR(par, PM2R_RD_CURSOR_DATA, 0);
}
for (; i < 64; i++) {
int j = 8;
WAIT_FIFO(par, 8);
while (j-- > 0)
pm2_WR(par, PM2R_RD_CURSOR_DATA, 0);
}
}
return 0;
}
/* ------------ Hardware Independent Functions ------------ */

7
include/video/permedia2.h
View File

@ -58,7 +58,14 @@
#define PM2R_RD_PALETTE_DATA 0x4008
#define PM2R_RD_PIXEL_MASK 0x4010
#define PM2R_RD_PALETTE_READ_ADDRESS 0x4018
#define PM2R_RD_CURSOR_COLOR_ADDRESS 0x4020
#define PM2R_RD_CURSOR_COLOR_DATA 0x4028
#define PM2R_RD_INDEXED_DATA 0x4050
#define PM2R_RD_CURSOR_DATA 0x4058
#define PM2R_RD_CURSOR_X_LSB 0x4060
#define PM2R_RD_CURSOR_X_MSB 0x4068
#define PM2R_RD_CURSOR_Y_LSB 0x4070
#define PM2R_RD_CURSOR_Y_MSB 0x4078
#define PM2R_START_X_DOM 0x8000
#define PM2R_D_X_DOM 0x8008