diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c index 2c9c9722734f..09824e92fc78 100644 --- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c @@ -53,9 +53,8 @@ #include <linux/of_graph.h> #include <linux/pm.h> -#include <drm/drm_panel.h> -#include <drm/drmP.h> #include <drm/drm_crtc.h> +#include <drm/drm_device.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_panel.h> @@ -400,7 +399,13 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, /* Look up the DSI host. It needs to probe before we do. */ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); + if (!endpoint) + return -ENODEV; + dsi_host_node = of_graph_get_remote_port_parent(endpoint); + if (!dsi_host_node) + goto error; + host = of_find_mipi_dsi_host_by_node(dsi_host_node); of_node_put(dsi_host_node); if (!host) { @@ -409,6 +414,9 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, } info.node = of_graph_get_remote_port(endpoint); + if (!info.node) + goto error; + of_node_put(endpoint); ts->dsi = mipi_dsi_device_register_full(host, &info); @@ -418,8 +426,8 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, return PTR_ERR(ts->dsi); } - ts->base.dev = dev; - ts->base.funcs = &rpi_touchscreen_funcs; + drm_panel_init(&ts->base, dev, &rpi_touchscreen_funcs, + DRM_MODE_CONNECTOR_DSI); /* This appears last, as it's what will unblock the DSI host * driver's component bind function. @@ -429,6 +437,10 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, return ret; return 0; + +error: + of_node_put(endpoint); + return -ENODEV; } static int rpi_touchscreen_remove(struct i2c_client *i2c) |