pm2fb: hardware cursor support for the Permedia2
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>
diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index 53dd639..20476f4 100644
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -1257,18 +1257,8 @@
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 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 ------------ */