In order to move exynos dp code to bridge directory, we need to convert driver drm bridge mode first. As dp driver already have a ptn3460 bridge, so we need to move ptn bridge to the next bridge of dp bridge.
Signed-off-by: Yakir Yang ykk@rock-chips.com --- Changes in v3: None Changes in v2: - Take Jingoo Han suggest, just remove my name from author list.
drivers/gpu/drm/exynos/exynos_dp_core.c | 194 ++++++++++++++++++++------------ drivers/gpu/drm/exynos/exynos_dp_core.h | 1 + 2 files changed, 123 insertions(+), 72 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index 562f4a8..2b87406 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -997,59 +997,6 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = { .best_encoder = exynos_dp_best_encoder, };
-/* returns the number of bridges attached */ -static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp, - struct drm_encoder *encoder) -{ - int ret; - - encoder->bridge = dp->bridge; - dp->bridge->encoder = encoder; - ret = drm_bridge_attach(encoder->dev, dp->bridge); - if (ret) { - DRM_ERROR("Failed to attach bridge to drm\n"); - return ret; - } - - return 0; -} - -static int exynos_dp_create_connector(struct exynos_drm_display *display, - struct drm_encoder *encoder) -{ - struct exynos_dp_device *dp = display_to_dp(display); - struct drm_connector *connector = &dp->connector; - int ret; - - dp->encoder = encoder; - - /* Pre-empt DP connector creation if there's a bridge */ - if (dp->bridge) { - ret = exynos_drm_attach_lcd_bridge(dp, encoder); - if (!ret) - return 0; - } - - connector->polled = DRM_CONNECTOR_POLL_HPD; - - ret = drm_connector_init(dp->drm_dev, connector, - &exynos_dp_connector_funcs, - DRM_MODE_CONNECTOR_eDP); - if (ret) { - DRM_ERROR("Failed to initialize connector with drm\n"); - return ret; - } - - drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs); - drm_connector_register(connector); - drm_mode_connector_attach_encoder(connector, encoder); - - if (dp->panel) - ret = drm_panel_attach(dp->panel, &dp->connector); - - return ret; -} - static void exynos_dp_phy_init(struct exynos_dp_device *dp) { if (dp->phy) @@ -1114,23 +1061,126 @@ static void exynos_dp_poweroff(struct exynos_dp_device *dp) } }
-static void exynos_dp_dpms(struct exynos_drm_display *display, int mode) +/* returns the number of bridges attached */ +static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp, + struct drm_encoder *encoder) +{ + int ret; + + dp->bridge->next = dp->ptn_bridge; + dp->bridge->encoder = encoder; + ret = drm_bridge_attach(encoder->dev, dp->bridge); + if (ret) { + DRM_ERROR("Failed to attach ptn bridge to drm\n"); + return ret; + } + + return 0; +} + +static int exynos_dp_bridge_attach(struct drm_bridge *bridge) +{ + + struct exynos_dp_device *dp = bridge->driver_private; + struct drm_encoder *encoder = dp->encoder; + struct drm_connector *connector = &dp->connector; + int ret; + + if (!bridge->encoder) { + DRM_ERROR("Parent encoder object not found"); + return -ENODEV; + } + + encoder->bridge = bridge; + + /* Pre-empt DP connector creation if there's a bridge */ + if (dp->ptn_bridge) { + ret = exynos_drm_attach_lcd_bridge(dp, encoder); + if (ret) + return -ENODEV; + } + + connector->polled = DRM_CONNECTOR_POLL_HPD; + + ret = drm_connector_init(dp->drm_dev, connector, + &exynos_dp_connector_funcs, DRM_MODE_CONNECTOR_eDP); + if (ret) { + DRM_ERROR("Failed to initialize connector with drm\n"); + return ret; + } + + drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs); + drm_connector_register(connector); + drm_mode_connector_attach_encoder(connector, encoder); + + if (dp->panel) + ret = drm_panel_attach(dp->panel, &dp->connector); + + return ret; +} + +static void exynos_dp_bridge_nop(struct drm_bridge *bridge) +{ + /* do nothing */ +} + +static void exynos_dp_bridge_enable(struct drm_bridge *bridge) +{ + struct exynos_dp_device *dp = bridge->driver_private; + + exynos_dp_poweron(dp); + dp->dpms_mode = DRM_MODE_DPMS_ON; +} + +static void exynos_dp_bridge_disable(struct drm_bridge *bridge) +{ + struct exynos_dp_device *dp = bridge->driver_private; + + exynos_dp_poweroff(dp); + dp->dpms_mode = DRM_MODE_DPMS_OFF; +} + +static const struct drm_bridge_funcs exynos_dp_bridge_funcs = { + .enable = exynos_dp_bridge_enable, + .disable = exynos_dp_bridge_disable, + .pre_enable = exynos_dp_bridge_nop, + .post_disable = exynos_dp_bridge_nop, + .attach = exynos_dp_bridge_attach, +}; + +static int exynos_dp_create_connector(struct exynos_drm_display *display, + struct drm_encoder *encoder) { struct exynos_dp_device *dp = display_to_dp(display); + struct drm_device *drm_dev = dp->drm_dev; + struct drm_bridge *bridge; + int ret;
- switch (mode) { - case DRM_MODE_DPMS_ON: - exynos_dp_poweron(dp); - break; - case DRM_MODE_DPMS_STANDBY: - case DRM_MODE_DPMS_SUSPEND: - case DRM_MODE_DPMS_OFF: - exynos_dp_poweroff(dp); - break; - default: - break; + bridge = devm_kzalloc(drm_dev->dev, sizeof(*bridge), GFP_KERNEL); + if (!bridge) { + DRM_ERROR("failed to allocate for drm bridge\n"); + return -ENOMEM; } - dp->dpms_mode = mode; + + dp->bridge = bridge; + dp->encoder = encoder; + + bridge->driver_private = dp; + bridge->encoder = dp->encoder; + bridge->funcs = &exynos_dp_bridge_funcs; + + ret = drm_bridge_attach(drm_dev, bridge); + if (ret) { + DRM_ERROR("failed to attach drm bridge\n"); + return -EINVAL; + } + + return 0; +} + +static void exynos_dp_dpms(struct exynos_drm_display *display, int mode) +{ + /* do nothing */ }
static struct exynos_drm_display_ops exynos_dp_display_ops = { @@ -1242,7 +1292,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) } }
- if (!dp->panel && !dp->bridge) { + if (!dp->panel && !dp->ptn_bridge) { ret = exynos_dp_dt_parse_panel(dp); if (ret) return ret; @@ -1315,7 +1365,7 @@ static void exynos_dp_unbind(struct device *dev, struct device *master, { struct exynos_dp_device *dp = dev_get_drvdata(dev);
- exynos_dp_dpms(&dp->display, DRM_MODE_DPMS_OFF); + exynos_dp_bridge_disable(dp->bridge); }
static const struct component_ops exynos_dp_ops = { @@ -1350,9 +1400,9 @@ static int exynos_dp_probe(struct platform_device *pdev) if (endpoint) { bridge_node = of_graph_get_remote_port_parent(endpoint); if (bridge_node) { - dp->bridge = of_drm_find_bridge(bridge_node); + dp->ptn_bridge = of_drm_find_bridge(bridge_node); of_node_put(bridge_node); - if (!dp->bridge) + if (!dp->ptn_bridge) return -EPROBE_DEFER; } else { return -EPROBE_DEFER; @@ -1374,7 +1424,7 @@ static int exynos_dp_suspend(struct device *dev) { struct exynos_dp_device *dp = dev_get_drvdata(dev);
- exynos_dp_dpms(&dp->display, DRM_MODE_DPMS_OFF); + exynos_dp_bridge_disable(dp->bridge); return 0; }
@@ -1382,7 +1432,7 @@ static int exynos_dp_resume(struct device *dev) { struct exynos_dp_device *dp = dev_get_drvdata(dev);
- exynos_dp_dpms(&dp->display, DRM_MODE_DPMS_ON); + exynos_dp_bridge_enable(dp->bridge); return 0; } #endif diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h index c321ad5..29bd56e 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.h +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h @@ -154,6 +154,7 @@ struct exynos_dp_device { struct drm_encoder *encoder; struct drm_panel *panel; struct drm_bridge *bridge; + struct drm_bridge *ptn_bridge; struct clk *clock; unsigned int irq; void __iomem *reg_base;