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drm/exynos: dsi: add support for MIC driver as a bridge

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MIC must be initilized by MIPI DSI when it is being bound.

Signed-off-by: Hyungwon Hwang <[email protected]>
Signed-off-by: Inki Dae <[email protected]>
This commit is contained in:
Hyungwon Hwang 2015-06-12 21:59:08 +09:00 • committed by Inki Dae
commit f5f3b9ba92
2 changed files with 44 additions and 3 deletions
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24
drivers/gpu/drm/exynos/exynos_drm_dsi.c
View file

@ -21,6 +21,7 @@
#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>
@ -288,6 +289,7 @@ 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)
@ -1794,7 +1796,22 @@ 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);
@ -1807,6 +1824,7 @@ 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);
@ -1816,6 +1834,12 @@ 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);
}