xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/ast: Move VRAM size detection to ast_mm.c

Browse Source 
VRAM size detection is only relevant to the memory management. Move
the code into ast_mm.c.

While at it, rename the function to ast_get_vram_size(). The function
argument's type is now struct ast_private. The result is stored in a
local variable and not in struct ast_private any longer.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200716125353.31512-5-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2020-07-16 14:53:51 +02:00
parent 8e46dc5853
commit 0149e7805b
3 changed files with 46 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
drivers/gpu/drm/ast/ast_mm.c
View File

@@ -33,13 +33,56 @@
#include "ast_drv.h"
static u32 ast_get_vram_size(struct ast_private *ast)
{
u8 jreg;
u32 vram_size;
ast_open_key(ast);
vram_size = AST_VIDMEM_DEFAULT_SIZE;
jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
switch (jreg & 3) {
case 0:
vram_size = AST_VIDMEM_SIZE_8M;
break;
case 1:
vram_size = AST_VIDMEM_SIZE_16M;
break;
case 2:
vram_size = AST_VIDMEM_SIZE_32M;
break;
case 3:
vram_size = AST_VIDMEM_SIZE_64M;
break;
}
jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff);
switch (jreg & 0x03) {
case 1:
vram_size -= 0x100000;
break;
case 2:
vram_size -= 0x200000;
break;
case 3:
vram_size -= 0x400000;
break;
}
return vram_size;
}
int ast_mm_init(struct ast_private *ast)
{
u32 vram_size;
int ret;
struct drm_device *dev = ast->dev;
vram_size = ast_get_vram_size(ast);
ret = drmm_vram_helper_init(dev, pci_resource_start(dev->pdev, 0),
ast->vram_size);
vram_size);
if (ret) {
drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
return ret;