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| author |   Rob Clark <robdclark@chromium.org> | 2021-12-06 09:13:49 -0800 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-12-06 09:14:28 -0800 |
| commit | 83b965d118cbab1dbdfffdff8cabc8c1cfd183c6 (patch) | |
| tree | f46a8f6d854b05a47311125f6fd6b6081e79557a /drivers/gpu/drm/drm_of.c | |
| parent | mailmap: add and update email addresses (diff) | |
| parent | Merge tag 'drm-intel-next-2021-11-30' of git://anongit.freedesktop.org/drm/drm-intel into drm-next (diff) | |
| download | linux-dev-83b965d118cbab1dbdfffdff8cabc8c1cfd183c6.tar.xz linux-dev-83b965d118cbab1dbdfffdff8cabc8c1cfd183c6.zip | |
Merge remote-tracking branch 'drm/drm-next' into msm-next-staging
Backmerge drm-next to pull in:
8f59ee9a570c ("drm/msm/dsi: Adjust probe order")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/drm_of.c')
| -rw-r--r-- | drivers/gpu/drm/drm_of.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c index 37c34146eea8..59d368ea006b 100644 --- a/drivers/gpu/drm/drm_of.c +++ b/drivers/gpu/drm/drm_of.c @@ -402,3 +402,36 @@ int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1, DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS; } EXPORT_SYMBOL_GPL(drm_of_lvds_get_dual_link_pixel_order); + +/** + * drm_of_lvds_get_data_mapping - Get LVDS data mapping + * @port: DT port node of the LVDS source or sink + * + * Convert DT "data-mapping" property string value into media bus format value. + * + * Return: + * * MEDIA_BUS_FMT_RGB666_1X7X3_SPWG - data-mapping is "jeida-18" + * * MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA - data-mapping is "jeida-24" + * * MEDIA_BUS_FMT_RGB888_1X7X4_SPWG - data-mapping is "vesa-24" + * * -EINVAL - the "data-mapping" property is unsupported + * * -ENODEV - the "data-mapping" property is missing + */ +int drm_of_lvds_get_data_mapping(const struct device_node *port) +{ + const char *mapping; + int ret; + + ret = of_property_read_string(port, "data-mapping", &mapping); + if (ret < 0) + return -ENODEV; + + if (!strcmp(mapping, "jeida-18")) + return MEDIA_BUS_FMT_RGB666_1X7X3_SPWG; + if (!strcmp(mapping, "jeida-24")) + return MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA; + if (!strcmp(mapping, "vesa-24")) + return MEDIA_BUS_FMT_RGB888_1X7X4_SPWG; + + return -EINVAL; +} +EXPORT_SYMBOL_GPL(drm_of_lvds_get_data_mapping); |