On Tue, 05 Apr 2022, Ville Syrjala ville.syrjala@linux.intel.com wrote:

From: Ville Syrjälä ville.syrjala@linux.intel.com

Make the PNPID decoding available for other users.

Cc: dri-devel@lists.freedesktop.org Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com

Reviewed-by: Jani Nikula jani.nikula@intel.com

---

include/drm/drm_edid.h | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index b7e170584000..5e9d7fcda8e7 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -508,6 +508,22 @@ static inline u8 drm_eld_get_conn_type(const uint8_t *eld) return eld[DRM_ELD_SAD_COUNT_CONN_TYPE] & DRM_ELD_CONN_TYPE_MASK; }

+/**

• • 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.

@@ -548,10 +564,7 @@ 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);