On 10/13/2014 12:16 PM, Thierry Reding wrote:
From: Thierry Reding treding@nvidia.com
Add a function, of_find_mipi_dsi_device_by_node(), that can be used to resolve a phandle to a MIPI DSI device.
Signed-off-by: Thierry Reding treding@nvidia.com
Acked-by: Andrzej Hajda a.hajda@samsung.com -- Regards Andrzej
drivers/gpu/drm/drm_mipi_dsi.c | 23 +++++++++++++++++++++++ include/drm/drm_mipi_dsi.h | 1 + 2 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index a0b9c7ea77a7..0067f914c1ea 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -67,6 +67,29 @@ static struct bus_type mipi_dsi_bus_type = { .pm = &mipi_dsi_device_pm_ops, };
+static int of_device_match(struct device *dev, void *data) +{
- return dev->of_node == data;
+}
+/**
- of_find_mipi_dsi_device_by_node() - find the MIPI DSI device matching a
- device tree node
- @np: device tree node
- Return: A pointer to the MIPI DSI device corresponding to @np or NULL if no
- such device exists (or has not been registered yet).
- */
+struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np) +{
- struct device *dev;
- dev = bus_find_device(&mipi_dsi_bus_type, NULL, np, of_device_match);
- return dev ? to_mipi_dsi_device(dev) : NULL;
+} +EXPORT_SYMBOL(of_find_mipi_dsi_device_by_node);
static void mipi_dsi_dev_release(struct device *dev) { struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev); diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 17ef2fbb09a5..8f025cc5ce99 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -142,6 +142,7 @@ static inline struct mipi_dsi_device *to_mipi_dsi_device(struct device *dev) return container_of(dev, struct mipi_dsi_device, dev); }
+struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np); int mipi_dsi_attach(struct mipi_dsi_device *dsi); int mipi_dsi_detach(struct mipi_dsi_device *dsi); int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi,