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drm/rockchip: rgb: add support mcu panel psr mode

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Psr mode can help reduce power consumption when using the mcu panel,
which supports to refresh the image on its own while it remains
unchanged.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Change-Id: I791ae6a3db58e7b7dce3c8fa4457212eed514530
This commit is contained in:
Damon Ding
2024-05-22 09:55:51 +08:00
committed by Tao Huang
parent ecca1f334b
commit e5ba266a1f
1 changed files with 46 additions and 5 deletions
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51
drivers/gpu/drm/rockchip/rockchip_rgb.c
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@@ -154,6 +154,7 @@ struct rockchip_rgb {
struct regmap *grf;
bool data_sync_bypass;
bool phy_enabled;
bool support_psr;
const struct rockchip_rgb_funcs *funcs;
struct rockchip_drm_sub_dev sub_dev;
};
@@ -223,15 +224,44 @@ rockchip_rgb_connector_best_encoder(struct drm_connector *connector)
return &rgb->encoder;
}
static int
rockchip_rgb_connector_atomic_check(struct drm_connector *connector,
struct drm_atomic_state *state)
{
struct rockchip_rgb *rgb = connector_to_rgb(connector);
struct drm_connector_state *conn_state;
conn_state = drm_atomic_get_new_connector_state(state, connector);
if (WARN_ON(!conn_state))
return -ENODEV;
conn_state->self_refresh_aware = rgb->support_psr;
return 0;
}
static const
struct drm_connector_helper_funcs rockchip_rgb_connector_helper_funcs = {
.get_modes = rockchip_rgb_connector_get_modes,
.best_encoder = rockchip_rgb_connector_best_encoder,
.atomic_check = rockchip_rgb_connector_atomic_check,
};
static void rockchip_rgb_encoder_enable(struct drm_encoder *encoder)
static void rockchip_rgb_encoder_atomic_enable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
struct rockchip_rgb *rgb = encoder_to_rgb(encoder);
struct drm_crtc *new_crtc;
struct drm_crtc_state *old_crtc_state;
new_crtc = drm_atomic_get_new_crtc_for_encoder(state, encoder);
if (!new_crtc)
return;
old_crtc_state = drm_atomic_get_old_crtc_state(state, new_crtc);
/* Coming back from self refresh, nothing to do */
if (old_crtc_state && old_crtc_state->self_refresh_active)
return;
pinctrl_pm_select_default_state(rgb->dev);
@@ -255,6 +285,17 @@ static void rockchip_rgb_encoder_atomic_disable(struct drm_encoder *encoder,
struct rockchip_rgb *rgb = encoder_to_rgb(encoder);
struct drm_crtc *old_crtc, *new_crtc;
struct rockchip_crtc_state *s;
struct drm_crtc_state *new_crtc_state = NULL;
new_crtc = drm_atomic_get_new_crtc_for_encoder(state, encoder);
/* No crtc means we're doing a full shutdown */
if (!new_crtc)
return;
new_crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc);
/* Entering self-refresh, do nothing */
if (new_crtc_state && new_crtc_state->self_refresh_active)
return;
if (rgb->panel) {
drm_panel_disable(rgb->panel);
@@ -272,8 +313,6 @@ static void rockchip_rgb_encoder_atomic_disable(struct drm_encoder *encoder,
pinctrl_pm_select_sleep_state(rgb->dev);
old_crtc = drm_atomic_get_old_crtc_for_encoder(state, encoder);
new_crtc = drm_atomic_get_new_crtc_for_encoder(state, encoder);
if (old_crtc && old_crtc != new_crtc) {
s = to_rockchip_crtc_state(old_crtc->state);
@@ -429,7 +468,7 @@ rockchip_rgb_encoder_mode_valid(struct drm_encoder *encoder,
static const
struct drm_encoder_helper_funcs rockchip_rgb_encoder_helper_funcs = {
.enable = rockchip_rgb_encoder_enable,
.atomic_enable = rockchip_rgb_encoder_atomic_enable,
.atomic_disable = rockchip_rgb_encoder_atomic_disable,
.atomic_check = rockchip_rgb_encoder_atomic_check,
.mode_valid = rockchip_rgb_encoder_mode_valid,
@@ -1023,8 +1062,10 @@ static int rockchip_rgb_probe(struct platform_device *pdev)
rgb->data_sync_bypass = of_property_read_bool(dev->of_node, "rockchip,data-sync-bypass");
fwnode_mcu_panel = device_get_named_child_node(dev, "mcu-panel");
if (fwnode_mcu_panel)
if (fwnode_mcu_panel) {
rgb->np_mcu_panel = to_of_node(fwnode_mcu_panel);
rgb->support_psr = of_property_read_bool(dev->of_node, "support-psr");
}
rgb_data = of_device_get_match_data(dev);
if (rgb_data) {