diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index 40d3b7770cf1..b0d1b99ed532 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -110,15 +110,18 @@ static void ast_detect_tx_chip(struct ast_device *ast, bool need_post) if (vgacra3 & AST_IO_VGACRA3_DVO_ENABLED) ast->tx_chip = AST_TX_SIL164; } - } else if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast) || IS_AST_GEN6(ast)) { + } else { /* - * On AST GEN4+, look the configuration set by the SoC in + * On AST GEN4+, look at the configuration set by the SoC in * the SOC scratch register #1 bits 11:8 (interestingly marked * as "reserved" in the spec) */ jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, AST_IO_VGACRD1_TX_TYPE_MASK); switch (jreg) { + /* + * GEN4 to GEN6 + */ case AST_IO_VGACRD1_TX_SIL164_VBIOS: ast->tx_chip = AST_TX_SIL164; break; @@ -134,11 +137,13 @@ static void ast_detect_tx_chip(struct ast_device *ast, bool need_post) fallthrough; case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW: ast->tx_chip = AST_TX_DP501; - } - } else if (IS_AST_GEN7(ast)) { - if (ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, AST_IO_VGACRD1_TX_TYPE_MASK) == - AST_IO_VGACRD1_TX_ASTDP) { + break; + /* + * GEN7+ + */ + case AST_IO_VGACRD1_TX_ASTDP: ast->tx_chip = AST_TX_ASTDP; + break; } } |