drm/rockchip: lvds: register a bridge when no panel is set
From: Heiko Stuebner <heiko@...> Date: Sun, 25 Jan 2015 20:14:39 +0100
Commit-Message
On socs using the lvds components it also controls the use of the general rgb outputs and must thus be configured for things like external encoders. Therefore register a drm_bridge in this case and try to find the encoder in the output port. Signed-off-by: Heiko Stuebner <heiko@...>
Patch-Comment
drivers/gpu/drm/rockchip/rockchip_lvds.c | 255 ++++++++++++++++++++++++++++--- 1 file changed, 233 insertions(+), 22 deletions(-)
Statistics
- 233 lines added
- 22 lines removed
Changes
------------------- drivers/gpu/drm/rockchip/rockchip_lvds.c -------------------
index 657609e..5ffd70a 100644
@@ -43,6 +43,9 @@
#define encoder_to_lvds(c) \
container_of(c, struct rockchip_lvds, encoder)
+#define bridge_to_lvds(c) \
+ container_of(c, struct rockchip_lvds, bridge)
+
/*
* @grf_offset: offset inside the grf regmap for setting the rockchip lvds
*/
@@ -68,6 +71,8 @@ struct rockchip_lvds {
struct drm_panel *panel;
struct drm_connector connector;
struct drm_encoder encoder;
+ struct drm_bridge bridge;
+ struct drm_encoder *ext_encoder;
struct mutex suspend_lock;
int suspend;
@@ -248,11 +253,10 @@ rockchip_lvds_encoder_mode_fixup(struct drm_encoder *encoder,
return true;
}
+static void rockchip_lvds_mode_set(struct rockchip_lvds *lvds,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted)
{
u32 h_bp = mode->htotal - mode->hsync_start;
u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0;
@@ -347,32 +351,52 @@ static void rockchip_lvds_encoder_mode_set(struct drm_encoder *encoder,
dsb();
}
+static void rockchip_lvds_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted)
+{
+ rockchip_lvds_mode_set(encoder_to_lvds(encoder), mode, adjusted);
+}
+
+static int rockchip_lvds_set_vop_source(struct rockchip_lvds *lvds,
+ struct drm_encoder *encoder)
{
u32 val;
int ret;
ret = rockchip_drm_encoder_get_mux_id(lvds->dev->of_node, encoder);
if (ret < 0)
+ return ret;
if (ret)
val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT |
(RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16);
else
val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16;
+
ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con6, val);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static void rockchip_lvds_encoder_prepare(struct drm_encoder *encoder)
+{
+ struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
+ int ret;
+
+ ret = rockchip_drm_crtc_mode_config(encoder->crtc,
+ lvds->connector.connector_type,
+ ROCKCHIP_OUT_MODE_P888);
+ if (ret < 0) {
+ dev_err(lvds->dev, "Could not set crtc mode config: %d\n", ret);
+ return;
+ }
+
+ ret = rockchip_lvds_set_vop_source(lvds, encoder);
+ if (ret < 0) {
+ dev_err(lvds->dev, "Could not set vop source: %d\n", ret);
return;
}
}
@@ -405,6 +429,97 @@ static struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
.destroy = rockchip_lvds_encoder_destroy,
};
+static void rockchip_lvds_bridge_mode_set(struct drm_bridge *bridge,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted)
+{
+ rockchip_lvds_mode_set(bridge_to_lvds(bridge), mode, adjusted);
+}
+
+static void rockchip_lvds_bridge_pre_enable(struct drm_bridge *bridge)
+{
+}
+
+/*
+ * post_disable is called right after encoder prepare, so do lvds and crtc
+ * mode config here.
+ */
+static void rockchip_lvds_bridge_post_disable(struct drm_bridge *bridge)
+{
+ struct rockchip_lvds *lvds = bridge_to_lvds(bridge);
+ struct drm_connector *connector;
+ int ret, connector_type = DRM_MODE_CONNECTOR_Unknown;
+
+ if (!bridge->encoder->crtc)
+ return;
+
+ list_for_each_entry(connector, &bridge->dev->mode_config.connector_list,
+ head) {
+ if (connector->encoder == bridge->encoder)
+ connector_type = connector->connector_type;
+ }
+
+ ret = rockchip_drm_crtc_mode_config(bridge->encoder->crtc,
+ connector_type,
+ ROCKCHIP_OUT_MODE_P888);
+ if (ret < 0) {
+ dev_err(lvds->dev, "Could not set crtc mode config: %d\n", ret);
+ return;
+ }
+
+ ret = rockchip_lvds_set_vop_source(lvds, bridge->encoder);
+ if (ret < 0) {
+ dev_err(lvds->dev, "Could not set vop source: %d\n", ret);
+ return;
+ }
+}
+
+static void rockchip_lvds_bridge_enable(struct drm_bridge *bridge)
+{
+ struct rockchip_lvds *lvds = bridge_to_lvds(bridge);
+ int ret;
+
+ mutex_lock(&lvds->suspend_lock);
+
+ if (!lvds->suspend)
+ goto out;
+
+ ret = rockchip_lvds_poweron(lvds);
+ if (ret < 0) {
+ dev_err(lvds->dev, "could not enable lvds\n");
+ goto out;
+ }
+
+ lvds->suspend = false;
+
+out:
+ mutex_unlock(&lvds->suspend_lock);
+}
+
+static void rockchip_lvds_bridge_disable(struct drm_bridge *bridge)
+{
+ struct rockchip_lvds *lvds = bridge_to_lvds(bridge);
+
+ mutex_lock(&lvds->suspend_lock);
+
+ if (lvds->suspend)
+ goto out;
+
+ rockchip_lvds_poweroff(lvds);
+ lvds->suspend = true;
+
+out:
+ mutex_unlock(&lvds->suspend_lock);
+}
+
+static struct drm_bridge_funcs rockchip_lvds_bridge_funcs = {
+ .mode_set = rockchip_lvds_bridge_mode_set,
+ .enable = rockchip_lvds_bridge_enable,
+ .disable = rockchip_lvds_bridge_disable,
+ .pre_enable = rockchip_lvds_bridge_pre_enable,
+ .post_disable = rockchip_lvds_bridge_post_disable,
+};
+
static struct rockchip_lvds_soc_data rk3288_lvds_data = {
.grf_soc_con6 = 0x025c,
.grf_soc_con7 = 0x0260,
@@ -430,6 +545,35 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
lvds->drm_dev = drm_dev;
+ if (!lvds->panel) {
+ struct drm_bridge *bridge = &lvds->bridge;
+
+ if (!lvds->ext_encoder->of_node)
+ return -ENODEV;
+
+ ret = component_bind_all(dev, drm_dev);
+ if (ret < 0)
+ return ret;
+
+ /**
+ * Override any possible crtcs set by the encoder itself,
+ * as they are connected to the lvds instead.
+ */
+ encoder = of_drm_find_encoder(lvds->ext_encoder->of_node);
+ encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
+ dev->of_node);
+
+ encoder->bridge = bridge;
+ bridge->encoder = encoder;
+ ret = drm_bridge_attach(drm_dev, bridge);
+ if (ret < 0) {
+ component_unbind_all(dev, drm_dev);
+ return ret;
+ }
+
+ return 0;
+ }
+
encoder = &lvds->encoder;
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
dev->of_node);
@@ -482,6 +626,7 @@ static void rockchip_lvds_unbind(struct device *dev, struct device *master,
void *data)
{
struct rockchip_lvds *lvds = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
if (lvds->panel) {
rockchip_lvds_encoder_dpms(&lvds->encoder, DRM_MODE_DPMS_OFF);
@@ -490,6 +635,8 @@ static void rockchip_lvds_unbind(struct device *dev, struct device *master,
drm_connector_cleanup(&lvds->connector);
drm_encoder_cleanup(&lvds->encoder);
+ } else {
+ component_unbind_all(dev, drm_dev);
}
}
static const struct component_ops rockchip_lvds_component_ops = {
@@ -497,6 +644,26 @@ static const struct component_ops rockchip_lvds_component_ops = {
.unbind = rockchip_lvds_unbind,
};
+static int compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+static int rockchip_lvds_master_bind(struct device *dev)
+{
+ return 0;
+}
+
+static void rockchip_lvds_master_unbind(struct device *dev)
+{
+ /* do nothing */
+}
+
+static const struct component_master_ops rockchip_lvds_master_ops = {
+ .bind = rockchip_lvds_master_bind,
+ .unbind = rockchip_lvds_master_unbind,
+};
+
static int rockchip_lvds_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -596,18 +763,58 @@ static int rockchip_lvds_probe(struct platform_device *pdev)
if (!output_node) {
dev_err(&pdev->dev, "no output defined\n");
+ ret = -EINVAL;
+ goto err_unprepare_pclk;
}
lvds->panel = of_drm_find_panel(output_node);
if (!lvds->panel) {
+ struct drm_encoder *encoder;
+ struct component_match *match = NULL;
+
+ /* Try to find an encoder in the output node */
+ encoder = of_drm_find_encoder(output_node);
+ if (!encoder) {
+ dev_err(&pdev->dev, "neither panel nor encoder found\n");
+ of_node_put(output_node);
+ ret = -EPROBE_DEFER;
+ goto err_unprepare_pclk;
+ }
+
+ lvds->ext_encoder = encoder;
+
+ component_match_add(dev, &match, compare_of, output_node);
+ of_node_put(output_node);
+
+ lvds->bridge.funcs = &rockchip_lvds_bridge_funcs;
+ lvds->bridge.of_node = dev->of_node;
+ ret = drm_bridge_add(&lvds->bridge);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add bridge %d\n", ret);
+ goto err_unprepare_pclk;
+ }
+
+ ret = component_master_add_with_match(dev,
+ &rockchip_lvds_master_ops,
+ match);
+ if (ret < 0)
+ goto err_bridge_remove;
+ } else {
+ of_node_put(output_node);
}
+ ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);
+ if (ret < 0)
+ goto err_master_remove;
+
+ return 0;
+err_master_remove:
+ if (!lvds->panel)
+ component_master_del(&pdev->dev, &rockchip_lvds_master_ops);
+err_bridge_remove:
+ if (!lvds->panel)
+ drm_bridge_remove(&lvds->bridge);
err_unprepare_pclk:
clk_unprepare(lvds->pclk);
return ret;
@@ -618,6 +825,10 @@ static int rockchip_lvds_remove(struct platform_device *pdev)
struct rockchip_lvds *lvds = dev_get_drvdata(&pdev->dev);
component_del(&pdev->dev, &rockchip_lvds_component_ops);
+ if (!lvds->panel) {
+ component_master_del(&pdev->dev, &rockchip_lvds_master_ops);
+ drm_bridge_remove(&lvds->bridge);
+ }
clk_unprepare(lvds->pclk);