diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-05-10 13:42:41 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-05-27 21:21:12 +0300 |
| commit | ade1fc91eb99614c7155fec762ad5761bb470e06 (patch) | |
| tree | 8316d2c8acb23c94a152c25119942eb35a7aac06 /include/drm | |
| parent | 952cd974509251d6b5074bc3677b8297826a6ef1 (diff) | |
| download | linux-ade1fc91eb99614c7155fec762ad5761bb470e06.tar.xz | |
drm/edid: Extract drm_edid_decode_mfg_id()
Make the PNPID decoding available for other users.
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220510104242.6099-15-ville.syrjala@linux.intel.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_edid.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index c61e75ab8f63..1d5950b5b407 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -498,6 +498,22 @@ static inline u8 drm_eld_get_conn_type(const uint8_t *eld) } /** + * drm_edid_decode_mfg_id - Decode the manufacturer ID + * @mfg_id: The manufacturer ID + * @vend: A 4-byte buffer to store the 3-letter vendor string plus a '\0' + * termination + */ +static inline const char *drm_edid_decode_mfg_id(u16 mfg_id, char vend[4]) +{ + vend[0] = '@' + ((mfg_id >> 10) & 0x1f); + vend[1] = '@' + ((mfg_id >> 5) & 0x1f); + vend[2] = '@' + ((mfg_id >> 0) & 0x1f); + vend[3] = '\0'; + + return vend; +} + +/** * drm_edid_encode_panel_id - Encode an ID for matching against drm_edid_get_panel_id() * @vend_chr_0: First character of the vendor string. * @vend_chr_1: Second character of the vendor string. @@ -537,10 +553,7 @@ static inline u8 drm_eld_get_conn_type(const uint8_t *eld) static inline void drm_edid_decode_panel_id(u32 panel_id, char vend[4], u16 *product_id) { *product_id = (u16)(panel_id & 0xffff); - vend[0] = '@' + ((panel_id >> 26) & 0x1f); - vend[1] = '@' + ((panel_id >> 21) & 0x1f); - vend[2] = '@' + ((panel_id >> 16) & 0x1f); - vend[3] = '\0'; + drm_edid_decode_mfg_id(panel_id >> 16, vend); } bool drm_probe_ddc(struct i2c_adapter *adapter); |