MIC must be initilized by MIPI DSI when it is being bound.
Signed-off-by: Hyungwon Hwang human.hwang@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 77236ad..e385d24 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -20,6 +20,7 @@ #include <linux/irq.h> #include <linux/of_device.h> #include <linux/of_gpio.h> +#include <linux/of_graph.h> #include <linux/phy/phy.h> #include <linux/regulator/consumer.h> #include <linux/component.h> @@ -280,6 +281,7 @@ struct exynos_dsi { struct list_head transfer_list;
struct exynos_dsi_driver_data *driver_data; + struct device_node *bridge_node; };
#define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host) @@ -1787,7 +1789,22 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
ret = exynos_dsi_of_read_u32(ep, "samsung,esc-clock-frequency", &dsi->esc_clk_rate); + if (ret < 0) + goto end; + + of_node_put(ep); + + ep = of_graph_get_next_endpoint(node, NULL); + if (!ep) { + ret = -ENXIO; + goto end; + }
+ dsi->bridge_node = of_graph_get_remote_port_parent(ep); + if (!dsi->bridge_node) { + ret = -ENXIO; + goto end; + } end: of_node_put(ep);
@@ -1800,6 +1817,7 @@ static int exynos_dsi_bind(struct device *dev, struct device *master, struct exynos_drm_display *display = dev_get_drvdata(dev); struct exynos_dsi *dsi = display_to_dsi(display); struct drm_device *drm_dev = data; + struct drm_bridge *bridge; int ret;
ret = exynos_drm_create_enc_conn(drm_dev, display); @@ -1809,6 +1827,12 @@ static int exynos_dsi_bind(struct device *dev, struct device *master, return ret; }
+ bridge = of_drm_find_bridge(dsi->bridge_node); + if (bridge) { + display->encoder->bridge = bridge; + drm_bridge_attach(drm_dev, bridge); + } + return mipi_dsi_host_register(&dsi->dsi_host); }