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drm/ast: Move mode-detection helpers to Gen2 source files

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Wide-screen modes are only available on Gen2 and later. Move the
detection helpers to the appropriate source file.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250922083708.45564-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2025-09-22 10:36:02 +02:00
parent d9a9ea0fba
commit bcb0119134
3 changed files with 33 additions and 27 deletions
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31
drivers/gpu/drm/ast/ast_2100.c
View File

@ -386,3 +386,34 @@ int ast_2100_post(struct ast_device *ast)
return 0;
}
/*
* Widescreen detection
*/
/* Try to detect WSXGA+ on Gen2+ */
bool __ast_2100_detect_wsxga_p(struct ast_device *ast)
{
u8 vgacrd0 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd0);
if (!(vgacrd0 & AST_IO_VGACRD0_VRAM_INIT_BY_BMC))
return true;
if (vgacrd0 & AST_IO_VGACRD0_IKVM_WIDESCREEN)
return true;
return false;
}
/* Try to detect WUXGA on Gen2+ */
bool __ast_2100_detect_wuxga(struct ast_device *ast)
{
u8 vgacrd1;
if (ast->support_fullhd) {
vgacrd1 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd1);
if (!(vgacrd1 & AST_IO_VGACRD1_SUPPORTS_WUXGA))
return true;
}
return false;
}

2
drivers/gpu/drm/ast/ast_drv.h
View File

@ -421,6 +421,8 @@ extern const struct ast_vbios_dclk_info ast_2000_dclk_table[];
/* ast_2100.c */
int ast_2100_post(struct ast_device *ast);
bool __ast_2100_detect_wsxga_p(struct ast_device *ast);
bool __ast_2100_detect_wuxga(struct ast_device *ast);
/* ast_2300.c */
int ast_2300_post(struct ast_device *ast);

27
drivers/gpu/drm/ast/ast_main.c
View File

@ -36,33 +36,6 @@
#include "ast_drv.h"
/* Try to detect WSXGA+ on Gen2+ */
static bool __ast_2100_detect_wsxga_p(struct ast_device *ast)
{
u8 vgacrd0 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd0);
if (!(vgacrd0 & AST_IO_VGACRD0_VRAM_INIT_BY_BMC))
return true;
if (vgacrd0 & AST_IO_VGACRD0_IKVM_WIDESCREEN)
return true;
return false;
}
/* Try to detect WUXGA on Gen2+ */
static bool __ast_2100_detect_wuxga(struct ast_device *ast)
{
u8 vgacrd1;
if (ast->support_fullhd) {
vgacrd1 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd1);
if (!(vgacrd1 & AST_IO_VGACRD1_SUPPORTS_WUXGA))
return true;
}
return false;
}
static void ast_detect_widescreen(struct ast_device *ast)
{
ast->support_wsxga_p = false;