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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-07 09:33:58 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-08 11:03:01 +0100 |
| commit | a21fdd7a4cd6952f39a2e2b0695f62c376bb28f4 (patch) | |
| tree | 72ab53ac386994cd647c221313c77c5b02ab645a /drivers/gpu/drm/ast/ast_mode.c | |
| parent | 9253f830c9166bfa6cc07d5ed59e174e9d5ec6ca (diff) | |
| download | lwn-a21fdd7a4cd6952f39a2e2b0695f62c376bb28f4.tar.gz lwn-a21fdd7a4cd6952f39a2e2b0695f62c376bb28f4.zip | |
drm/ast: Don't clear base address and offset with default values
The content of the base-address and offset registers are state of
the primary plane. Clearing it to default values will interfere with
plane functions for atomic mode setting.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-4-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast/ast_mode.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_mode.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index b13eaa2619ab..b3f82c2d274d 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -253,9 +253,13 @@ static void ast_set_std_reg(struct drm_crtc *crtc, struct drm_display_mode *mode ast_set_index_reg(ast, AST_IO_SEQ_PORT, (i + 1) , jreg); } - /* Set CRTC */ + /* Set CRTC; except base address and offset */ ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00); - for (i = 0; i < 25; i++) + for (i = 0; i < 12; i++) + ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]); + for (i = 14; i < 19; i++) + ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]); + for (i = 20; i < 25; i++) ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]); /* set AR */ |