diff options
| author | Y.C. Chen | 2017-01-26 09:45:40 +0800 |
|---|---|---|
| committer | Dave Airlie | 2017-01-27 10:40:03 +1000 |
| commit | 6c971c09f38704513c426ba6515f22fb3d6c87d5 (patch) | |
| tree | ad8e2f34c3c20ec7f915872a91d744789729d3ee /drivers/gpu/drm/ast/ast_post.c | |
| parent | e996598b282d2ebafe705d297d3fee9044286dc6 (diff) | |
drm/ast: Fixed system hanged if disable P2A
The original ast driver will access some BMC configuration through P2A bridge
that can be disabled since AST2300 and after.
It will cause system hanged if P2A bridge is disabled.
Here is the update to fix it.
Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/ast/ast_post.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_post.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c index 810c51d92b99..5331ee1df086 100644 --- a/drivers/gpu/drm/ast/ast_post.c +++ b/drivers/gpu/drm/ast/ast_post.c @@ -379,12 +379,20 @@ void ast_post_gpu(struct drm_device *dev) ast_open_key(ast); ast_set_def_ext_reg(dev); - if (ast->chip == AST2300 || ast->chip == AST2400) - ast_init_dram_2300(dev); - else - ast_init_dram_reg(dev); + if (ast->DisableP2A == false) + { + if (ast->chip == AST2300 || ast->chip == AST2400) + ast_init_dram_2300(dev); + else + ast_init_dram_reg(dev); - ast_init_3rdtx(dev); + ast_init_3rdtx(dev); + } + else + { + if (ast->tx_chip_type != AST_TX_NONE) + ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xcf, 0x80); /* Enable DVO */ + } } /* AST 2300 DRAM settings */ |