diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2026-04-13 17:05:29 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2026-04-18 02:10:37 +0300 |
| commit | a8c56e00c608d5c70eb89464676ea0b3cdcb1ce6 (patch) | |
| tree | cc5ad9d97b912e56c18509d10868c0bc01fd9646 /include | |
| parent | 17b2ab777384d04cae0e5c1e19287d16369e745d (diff) | |
| download | linux-a8c56e00c608d5c70eb89464676ea0b3cdcb1ce6.tar.xz | |
drm/of: add helper to count data-lanes on a remote endpoint
If the DSI panel supports versatile lanes configuration, its driver
might require determining the number of DSI data lanes, which is usually
specified on the DSI host side of the OF graph. Add new helper as a
pair to drm_of_get_data_lanes_count_ep() that lets callers determine
number of data-lanes on the remote side of the OF graph.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260413-waveshare-dsi-touch-v3-6-3aeb53022c32@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_of.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h index f2f2bf82eff9..7bcc0ccfe0f4 100644 --- a/include/drm/drm_of.h +++ b/include/drm/drm_of.h @@ -62,6 +62,10 @@ int drm_of_get_data_lanes_count_ep(const struct device_node *port, int port_reg, int reg, const unsigned int min, const unsigned int max); +int drm_of_get_data_lanes_count_remote(const struct device_node *port, + int port_reg, int reg, + const unsigned int min, + const unsigned int max); #else static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev, struct device_node *port) @@ -140,6 +144,15 @@ drm_of_get_data_lanes_count_ep(const struct device_node *port, { return -EINVAL; } + +static inline int +drm_of_get_data_lanes_count_remote(const struct device_node *port, + int port_reg, int reg, + const unsigned int min, + const unsigned int max) +{ + return -EINVAL; +} #endif #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_MIPI_DSI) |