diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index 01f938c2da28..031ff4ed1920 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -52,6 +52,36 @@ out: return pcibios_err_to_errno(err); } +static bool ast_is_vga_enabled(struct drm_device *dev) +{ + struct ast_device *ast = to_ast_device(dev); + u8 ch; + + ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT); + + return !!(ch & 0x01); +} + +static void ast_enable_vga(struct drm_device *dev) +{ + struct ast_device *ast = to_ast_device(dev); + + ast_io_write8(ast, AST_IO_VGA_ENABLE_PORT, 0x01); + ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, 0x01); +} + +static void ast_enable_mmio(struct drm_device *dev) +{ + struct ast_device *ast = to_ast_device(dev); + + ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06); +} + +static void ast_open_key(struct ast_device *ast) +{ + ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x80, 0xA8); +} + static void ast_detect_config_mode(struct drm_device *dev, u32 *scu_rev) { struct device_node *np = dev->dev->of_node; |