This will be especially useful for generic panels (like panel-simple) which can take different code path depending on if they are MIPI-DSI devices or platform devices.
Signed-off-by: Maxime Ripard <[email protected]> --- drivers/gpu/drm/drm_mipi_dsi.c | 3 ++- include/drm/drm_mipi_dsi.h | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index e5184a0c24651756ee0b1eb27d94083d63eb35a7..21fd647f8ce1a6a862e2f8fb5320e701f26f614f 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -89,16 +89,17 @@ static const struct dev_pm_ops mipi_dsi_device_pm_ops = { .thaw = pm_generic_thaw, .poweroff = pm_generic_poweroff, .restore = pm_generic_restore, }; -static const struct bus_type mipi_dsi_bus_type = { +const struct bus_type mipi_dsi_bus_type = { .name = "mipi-dsi", .match = mipi_dsi_device_match, .uevent = mipi_dsi_uevent, .pm = &mipi_dsi_device_pm_ops, }; +EXPORT_SYMBOL_GPL(mipi_dsi_bus_type); /** * of_find_mipi_dsi_device_by_node() - find the MIPI DSI device matching a * device tree node * @np: device tree node diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index b37860f4a895c25ef8ba1c5b3f44827ef53aa100..6d2c08e8110151a97620389197f1ef79c058329d 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -221,10 +221,13 @@ struct mipi_dsi_multi_context { #define MIPI_DSI_MODULE_PREFIX "mipi-dsi:" #define to_mipi_dsi_device(__dev) container_of_const(__dev, struct mipi_dsi_device, dev) +extern const struct bus_type mipi_dsi_bus_type; +#define dev_is_mipi_dsi(dev) ((dev)->bus == &mipi_dsi_bus_type) + /** * mipi_dsi_pixel_format_to_bpp - obtain the number of bits per pixel for any * given pixel format defined by the MIPI DSI * specification * @fmt: MIPI DSI pixel format -- 2.49.0
