drm/ast: Store DRAM clock table in struct ast_device

Init the new field dclk_table in struct ast_device to the per-gen
table of DRAM clock parameters. Use the field during modesetting.

The table is static, so a setup is only required once. Removes the
call to IS_AST_GEN() from the atomic commit's code path.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20251007150343.273718-2-tzimmermann@suse.de

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 35c476c85b9a..b2b30a0e4ffb 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -174,6 +174,8 @@ struct ast_device {
 	enum ast_config_mode config_mode;
 	enum ast_chip chip;
 
+	const struct ast_vbios_dclk_info *dclk_table;
+
 	void __iomem	*vram;
 	unsigned long	vram_base;
 	unsigned long	vram_size;