diff options
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 85 |
1 files changed, 43 insertions, 42 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 4f54c91b31b2..855beafb76ff 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1817,7 +1817,7 @@ static int edid_block_tag(const void *_block) static bool edid_block_is_zero(const void *edid) { - return !memchr_inv(edid, 0, EDID_LENGTH); + return mem_is_zero(edid, EDID_LENGTH); } static bool drm_edid_eq(const struct drm_edid *drm_edid, @@ -1966,22 +1966,14 @@ static void edid_block_dump(const char *level, const void *block, int block_num) block, EDID_LENGTH, false); } -/** - * drm_edid_block_valid - Sanity check the EDID block (base or extension) - * @_block: pointer to raw EDID block - * @block_num: type of block to validate (0 for base, extension otherwise) - * @print_bad_edid: if true, dump bad EDID blocks to the console - * @edid_corrupt: if true, the header or checksum is invalid - * +/* * Validate a base or extension EDID block and optionally dump bad blocks to * the console. - * - * Return: True if the block is valid, false otherwise. */ -bool drm_edid_block_valid(u8 *_block, int block_num, bool print_bad_edid, - bool *edid_corrupt) +static bool drm_edid_block_valid(void *_block, int block_num, bool print_bad_edid, + bool *edid_corrupt) { - struct edid *block = (struct edid *)_block; + struct edid *block = _block; enum edid_block_status status; bool is_base_block = block_num == 0; bool valid; @@ -2024,7 +2016,6 @@ bool drm_edid_block_valid(u8 *_block, int block_num, bool print_bad_edid, return valid; } -EXPORT_SYMBOL(drm_edid_block_valid); /** * drm_edid_is_valid - sanity check EDID data @@ -2465,34 +2456,6 @@ fail: } /** - * drm_do_get_edid - get EDID data using a custom EDID block read function - * @connector: connector we're probing - * @read_block: EDID block read function - * @context: private data passed to the block read function - * - * When the I2C adapter connected to the DDC bus is hidden behind a device that - * exposes a different interface to read EDID blocks this function can be used - * to get EDID data using a custom block read function. - * - * As in the general case the DDC bus is accessible by the kernel at the I2C - * level, drivers must make all reasonable efforts to expose it as an I2C - * adapter and use drm_get_edid() instead of abusing this function. - * - * The EDID may be overridden using debugfs override_edid or firmware EDID - * (drm_edid_load_firmware() and drm.edid_firmware parameter), in this priority - * order. Having either of them bypasses actual EDID reads. - * - * Return: Pointer to valid EDID or NULL if we couldn't find any. - */ -struct edid *drm_do_get_edid(struct drm_connector *connector, - read_block_fn read_block, - void *context) -{ - return _drm_do_get_edid(connector, read_block, context, NULL); -} -EXPORT_SYMBOL_GPL(drm_do_get_edid); - -/** * drm_edid_raw - Get a pointer to the raw EDID data. * @drm_edid: drm_edid container * @@ -6657,6 +6620,11 @@ static void update_displayid_info(struct drm_connector *connector, displayid_iter_edid_begin(drm_edid, &iter); displayid_iter_for_each(block, &iter) { + drm_dbg_kms(connector->dev, + "[CONNECTOR:%d:%s] DisplayID extension version 0x%02x, primary use 0x%02x\n", + connector->base.id, connector->name, + displayid_version(&iter), + displayid_primary_use(&iter)); if (displayid_version(&iter) == DISPLAY_ID_STRUCTURE_VER_20 && (displayid_primary_use(&iter) == PRIMARY_USE_HEAD_MOUNTED_VR || displayid_primary_use(&iter) == PRIMARY_USE_HEAD_MOUNTED_AR)) @@ -6969,6 +6937,39 @@ out: return ret; } +/* For sysfs edid show implementation */ +ssize_t drm_edid_connector_property_show(struct drm_connector *connector, + char *buf, loff_t off, size_t count) +{ + const void *edid; + size_t size; + ssize_t ret = 0; + + mutex_lock(&connector->dev->mode_config.mutex); + + if (!connector->edid_blob_ptr) + goto unlock; + + edid = connector->edid_blob_ptr->data; + size = connector->edid_blob_ptr->length; + if (!edid) + goto unlock; + + if (off >= size) + goto unlock; + + if (off + count > size) + count = size - off; + + memcpy(buf, edid + off, count); + + ret = count; +unlock: + mutex_unlock(&connector->dev->mode_config.mutex); + + return ret; +} + /** * drm_edid_connector_update - Update connector information from EDID * @connector: Connector |