diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2025-07-06 18:26:43 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2025-07-09 14:36:21 +0200 |
| commit | b1ce4ab06f70fa1dea6b4b6a372aa43989c55897 (patch) | |
| tree | 4950ce4e98353f14d53d99211174cdbeb7aeb1a8 /drivers/gpu/drm/ast/ast_2300.c | |
| parent | eb104c69db707ce0208f753a897dadd39f51342f (diff) | |
drm/ast: Split ast_set_def_ext_reg() by chip generation
Duplicate ast_set_def_ext_reg() for individual chip generations
and move call it into per-chip source files. Remove the original
code. AST2100 and AST2500 reuse the function from earlier chips.
AST2600 appears to be incorrect as it uses an older function. Keep
this behavior for now.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250706162816.211552-9-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast/ast_2300.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_2300.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_2300.c b/drivers/gpu/drm/ast/ast_2300.c index 7a2c3fde09d2..dc2a32244689 100644 --- a/drivers/gpu/drm/ast/ast_2300.c +++ b/drivers/gpu/drm/ast/ast_2300.c @@ -35,6 +35,37 @@ * POST */ +void ast_2300_set_def_ext_reg(struct ast_device *ast) +{ + static const u8 extreginfo[] = { 0x0f, 0x04, 0x1f, 0xff }; + u8 i, index, reg; + const u8 *ext_reg_info; + + /* reset scratch */ + for (i = 0x81; i <= 0x9f; i++) + ast_set_index_reg(ast, AST_IO_VGACRI, i, 0x00); + + ext_reg_info = extreginfo; + index = 0xa0; + while (*ext_reg_info != 0xff) { + ast_set_index_reg_mask(ast, AST_IO_VGACRI, index, 0x00, *ext_reg_info); + index++; + ext_reg_info++; + } + + /* disable standard IO/MEM decode if secondary */ + /* ast_set_index_reg-mask(ast, AST_IO_VGACRI, 0xa1, 0xff, 0x3); */ + + /* Set Ext. Default */ + ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x8c, 0x00, 0x01); + ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb7, 0x00, 0x00); + + /* Enable RAMDAC for A1 */ + reg = 0x04; + reg |= 0x20; + ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xff, reg); +} + /* AST 2300 DRAM settings */ #define AST_DDR3 0 #define AST_DDR2 1 @@ -1281,6 +1312,8 @@ static void ast_post_chip_2300(struct ast_device *ast) int ast_2300_post(struct ast_device *ast) { + ast_2300_set_def_ext_reg(ast); + if (ast->config_mode == ast_use_p2a) { ast_post_chip_2300(ast); ast_init_3rdtx(ast); |