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authorThomas Zimmermann <tzimmermann@suse.de>2019-11-07 09:34:02 +0100
committerThomas Zimmermann <tzimmermann@suse.de>2019-11-08 11:04:45 +0100
commitb48e1b6ffd28a2af57620c4876abe7b956314e87 (patch)
tree3a31faa0faaa25d0e9c2f1766513a01a2a99a893 /drivers/gpu/drm/ast
parenta6ff807b71e3ffa85c1ba133d8a9fa11fcfe186d (diff)
downloadlinux-b48e1b6ffd28a2af57620c4876abe7b956314e87.tar.bz2
drm/ast: Add CRTC helpers for atomic modesetting
As the CRTC code has already been prepared for a split between mode setting and plane handling, most of the CRTC's atomic modesetting is build upon primitives of the non-atomic implementation. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191107083404.6852-8-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast')
-rw-r--r--drivers/gpu/drm/ast/ast_mode.c105
1 files changed, 104 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index dcd635115297..65ee8215f730 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -727,6 +727,103 @@ static void ast_crtc_commit(struct drm_crtc *crtc)
ast_crtc_load_lut(crtc);
}
+static int ast_crtc_helper_atomic_check(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ struct ast_private *ast = crtc->dev->dev_private;
+ struct drm_plane_state *plane_state;
+ bool succ;
+ struct drm_display_mode adjusted_mode;
+ struct ast_vbios_mode_info vbios_mode;
+
+ if (ast->chip == AST1180) {
+ DRM_ERROR("AST 1180 modesetting not supported\n");
+ return -EINVAL;
+ }
+
+ plane_state = crtc->primary->state;
+
+ if (plane_state && plane_state->fb) {
+ succ = ast_get_vbios_mode_info(plane_state->fb, &state->mode,
+ &adjusted_mode, &vbios_mode);
+ if (!succ)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void ast_crtc_helper_atomic_begin(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+ struct ast_private *ast = crtc->dev->dev_private;
+
+ ast_open_key(ast);
+}
+
+static void ast_crtc_helper_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+ const struct drm_framebuffer *fb = crtc->primary->state->fb;
+ struct drm_display_mode adjusted_mode;
+ struct ast_vbios_mode_info vbios_mode;
+ bool succ;
+
+ crtc->state->no_vblank = true;
+
+ if (!fb)
+ return;
+
+ ast_set_color_reg(crtc, fb);
+
+ memset(&adjusted_mode, 0, sizeof(adjusted_mode));
+ drm_mode_copy(&adjusted_mode, &crtc->state->adjusted_mode);
+
+ succ = ast_get_vbios_mode_info(fb, &crtc->state->adjusted_mode,
+ &adjusted_mode, &vbios_mode);
+ if (WARN_ON_ONCE(!succ))
+ return;
+
+ ast_set_vbios_color_reg(crtc, fb, &vbios_mode);
+}
+
+static void
+ast_crtc_helper_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct ast_private *ast = crtc->dev->dev_private;
+ const struct drm_framebuffer *fb = crtc->primary->state->fb;
+ struct drm_display_mode adjusted_mode;
+ struct ast_vbios_mode_info vbios_mode;
+ bool succ;
+
+ memset(&adjusted_mode, 0, sizeof(adjusted_mode));
+ drm_mode_copy(&adjusted_mode, &crtc->state->adjusted_mode);
+
+ succ = ast_get_vbios_mode_info(fb, &crtc->state->adjusted_mode,
+ &adjusted_mode, &vbios_mode);
+ if (WARN_ON_ONCE(!succ))
+ return;
+
+ ast_set_vbios_mode_reg(crtc, &adjusted_mode, &vbios_mode);
+ ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06);
+ ast_set_std_reg(crtc, &adjusted_mode, &vbios_mode);
+ ast_set_crtc_reg(crtc, &adjusted_mode, &vbios_mode);
+ ast_set_dclk_reg(dev, &adjusted_mode, &vbios_mode);
+ ast_set_crtthd_reg(crtc);
+ ast_set_sync_reg(dev, &adjusted_mode, &vbios_mode);
+ ast_set_dac_reg(crtc, &adjusted_mode, &vbios_mode);
+
+ ast_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
+}
+
+static void
+ast_crtc_helper_atomic_disable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+ ast_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+}
static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
.dpms = ast_crtc_dpms,
@@ -735,7 +832,11 @@ static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
.disable = ast_crtc_disable,
.prepare = ast_crtc_prepare,
.commit = ast_crtc_commit,
-
+ .atomic_check = ast_crtc_helper_atomic_check,
+ .atomic_begin = ast_crtc_helper_atomic_begin,
+ .atomic_flush = ast_crtc_helper_atomic_flush,
+ .atomic_enable = ast_crtc_helper_atomic_enable,
+ .atomic_disable = ast_crtc_helper_atomic_disable,
};
static void ast_crtc_reset(struct drm_crtc *crtc)
@@ -766,6 +867,8 @@ static const struct drm_crtc_funcs ast_crtc_funcs = {
.set_config = drm_crtc_helper_set_config,
.gamma_set = ast_crtc_gamma_set,
.destroy = ast_crtc_destroy,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
};
static int ast_crtc_init(struct drm_device *dev)