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drm/ast: Fixed vram size incorrect issue on POWER 

The default value of VGA scratch may incorrect.
Should initial h/w before get vram info.

Acked-by: Joel Stanley <joel@jms.id.au>
Tested-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Y.C. Chen 2017-02-17 10:56:47 +08:00 committed by Dave Airlie
parent 9f93c8b3c0
commit bad09da6de
2 changed files with 4 additions and 4 deletions
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6
drivers/gpu/drm/ast/ast_main.c
View File

@ -518,6 +518,9 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
ast_detect_chip(dev, &need_post);
if (need_post)
ast_post_gpu(dev);
if (ast->chip != AST1180) {
ret = ast_get_dram_info(dev);
if (ret)
@ -528,9 +531,6 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
ast->dram_bus_width, ast->vram_size);
}
if (need_post)
ast_post_gpu(dev);
ret = ast_mm_init(ast);
if (ret)
goto out_free;

2
drivers/gpu/drm/ast/ast_post.c
View File

@ -79,7 +79,7 @@ ast_set_def_ext_reg(struct drm_device *dev)
const u8 *ext_reg_info;
/* reset scratch */
for (i = 0x81; i <= 0x8f; i++)
for (i = 0x81; i <= 0x9f; i++)
ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, 0x00);
if (ast->chip == AST2300 || ast->chip == AST2400) {