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drm/rockchip: logo: support to use the win scale to configure overscan parameters

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For some platforms, such as RK3576, use the win scale instead
of the post scale to configure overscan parameters, because the
sharp/post scale/split functions are mutually exclusice.

Change-Id: If422749ed8defc553924f14f24ab173913b2dcad
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
This commit is contained in:
Damon Ding
2025-03-20 09:24:06 +08:00
parent 703b39bceb
commit b0d79ebe70
1 changed files with 33 additions and 2 deletions
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35
drivers/gpu/drm/rockchip/rockchip_drm_logo.c
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@@ -772,7 +772,8 @@ static void rockchip_drm_mode_fixup(struct drm_crtc_state *crtc_state,
static int setup_initial_state(struct drm_device *drm_dev,
struct drm_atomic_state *state,
struct rockchip_drm_mode_set *set)
struct rockchip_drm_mode_set *set,
struct device_node *route)
{
struct rockchip_drm_private *priv = drm_dev->dev_private;
struct drm_connector *connector = set->sub_dev->connector;
@@ -785,8 +786,11 @@ static int setup_initial_state(struct drm_device *drm_dev,
const struct drm_connector_helper_funcs *funcs;
int pipe = drm_crtc_index(crtc);
bool is_crtc_enabled = true;
u32 overscan_by_win_scale = 0;
int hdisplay, vdisplay;
int fb_width, fb_height;
int overscan_w, overscan_h;
int crtc_x, crtc_y, crtc_w, crtc_h;
int found = 0, match = 0;
int num_modes;
int ret = 0;
@@ -938,6 +942,33 @@ static int setup_initial_state(struct drm_device *drm_dev,
primary_state->crtc_w = hdisplay;
primary_state->crtc_h = vdisplay;
}
/*
* For some platforms, such as RK3576, use the win scale instead
* of the post scale to configure overscan parameters, because the
* sharp/post scale/split functions are mutually exclusice.
*/
of_property_read_u32(route, "overscan,win_scale", &overscan_by_win_scale);
if (overscan_by_win_scale) {
overscan_w = primary_state->crtc_w * (200 - set->left_margin * 2) / 200;
overscan_h = primary_state->crtc_h * (200 - set->top_margin * 2) / 200;
crtc_x = primary_state->crtc_x + overscan_w / 2;
crtc_y = primary_state->crtc_y + overscan_h / 2;
crtc_w = primary_state->crtc_w - overscan_w;
crtc_h = primary_state->crtc_h - overscan_h;
primary_state->crtc_x = crtc_x;
primary_state->crtc_y = crtc_y;
primary_state->crtc_w = crtc_w;
primary_state->crtc_h = crtc_h;
set->left_margin = 100;
set->right_margin = 100;
set->top_margin = 100;
set->bottom_margin = 100;
}
s = to_rockchip_crtc_state(crtc->state);
s->output_type = connector->connector_type;
@@ -1100,7 +1131,7 @@ void rockchip_drm_show_logo(struct drm_device *drm_dev)
if (!set)
continue;
if (setup_initial_state(drm_dev, state, set)) {
if (setup_initial_state(drm_dev, state, set, route)) {
drm_framebuffer_put(set->fb);
INIT_LIST_HEAD(&set->head);
list_add_tail(&set->head, &mode_unset_list);