diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
| commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
| tree | aa5cc3760a27c3d57146498cb82fa549547de06c /drivers/video/fbdev/bt431.h | |
| parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) | |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/video/fbdev/bt431.h')
| -rw-r--r-- | drivers/video/fbdev/bt431.h | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/drivers/video/fbdev/bt431.h b/drivers/video/fbdev/bt431.h index 04e0cfbba..3929602f5 100644 --- a/drivers/video/fbdev/bt431.h +++ b/drivers/video/fbdev/bt431.h @@ -2,6 +2,7 @@ * linux/drivers/video/bt431.h * * Copyright 2003 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de> + * Copyright 2016 Maciej W. Rozycki <macro@linux-mips.org> * * This file is subject to the terms and conditions of the GNU General * Public License. See the file COPYING in the main directory of this @@ -9,6 +10,8 @@ */ #include <linux/types.h> +#define BT431_CURSOR_SIZE 64 + /* * Bt431 cursor generator registers, 32-bit aligned. * Two twin Bt431 are used on the DECstation's PMAG-AA. @@ -60,7 +63,7 @@ static inline u8 bt431_get_value(u16 val) #define BT431_CMD_CURS_ENABLE 0x40 #define BT431_CMD_XHAIR_ENABLE 0x20 #define BT431_CMD_OR_CURSORS 0x10 -#define BT431_CMD_AND_CURSORS 0x00 +#define BT431_CMD_XOR_CURSORS 0x00 #define BT431_CMD_1_1_MUX 0x00 #define BT431_CMD_4_1_MUX 0x04 #define BT431_CMD_5_1_MUX 0x08 @@ -196,28 +199,30 @@ static inline void bt431_position_cursor(struct bt431_regs *regs, u16 x, u16 y) bt431_write_reg_inc(regs, (y >> 8) & 0x0f); /* BT431_REG_CYHI */ } -static inline void bt431_set_font(struct bt431_regs *regs, u8 fgc, - u16 width, u16 height) +static inline void bt431_set_cursor(struct bt431_regs *regs, + const char *data, const char *mask, + u16 rop, u16 width, u16 height) { + u16 x, y; int i; - u16 fgp = fgc ? 0xffff : 0x0000; - u16 bgp = fgc ? 0x0000 : 0xffff; + i = 0; + width = DIV_ROUND_UP(width, 8); bt431_select_reg(regs, BT431_REG_CRAM_BASE); - for (i = BT431_REG_CRAM_BASE; i <= BT431_REG_CRAM_END; i++) { - u16 value; - - if (height << 6 <= i << 3) - value = bgp; - else if (width <= i % 8 << 3) - value = bgp; - else if (((width >> 3) & 0xffff) > i % 8) - value = fgp; - else - value = fgp & ~(bgp << (width % 8 << 1)); - - bt431_write_cmap_inc(regs, value); - } + for (y = 0; y < BT431_CURSOR_SIZE; y++) + for (x = 0; x < BT431_CURSOR_SIZE / 8; x++) { + u16 val = 0; + + if (y < height && x < width) { + val = mask[i]; + if (rop == ROP_XOR) + val = (val << 8) | (val ^ data[i]); + else + val = (val << 8) | (val & data[i]); + i++; + } + bt431_write_cmap_inc(regs, val); + } } static inline void bt431_init_cursor(struct bt431_regs *regs) |