On Tue, 10 May 2016, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
> On Tue, 10 May 2016, Dave Airlie <airlied@xxxxxxxxx> wrote:
>> From: Dave Airlie <airlied@xxxxxxxxxx>
>>
>> This just makes the code easier to follow.
>>
>> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
>
> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Ooops, one thing needs fixing below.
>
>> ---
>> drivers/gpu/drm/drm_edid.c | 111 ++++++++++++++++++++++++---------------------
>> 1 file changed, 59 insertions(+), 52 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
>> index 96b181a..9dbaaf4 100644
>> --- a/drivers/gpu/drm/drm_edid.c
>> +++ b/drivers/gpu/drm/drm_edid.c
>> @@ -4152,6 +4152,60 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
>> }
>> EXPORT_SYMBOL(drm_hdmi_vendor_infoframe_from_display_mode);
>>
>> +static int drm_parse_tiled_block(struct drm_connector *connector,
>> + struct displayid_block *block)
>> +{
>> + struct displayid_tiled_block *tile = (struct displayid_tiled_block *)block;
>> + u16 w, h;
>> + u8 tile_v_loc, tile_h_loc;
>> + u8 num_v_tile, num_h_tile;
>> + struct drm_tile_group *tg;
>> +
>> + w = tile->tile_size[0] | tile->tile_size[1] << 8;
>> + h = tile->tile_size[2] | tile->tile_size[3] << 8;
>> +
>> + num_v_tile = (tile->topo[0] & 0xf) | (tile->topo[2] & 0x30);
>> + num_h_tile = (tile->topo[0] >> 4) | ((tile->topo[2] >> 2) & 0x30);
>> + tile_v_loc = (tile->topo[1] & 0xf) | ((tile->topo[2] & 0x3) << 4);
>> + tile_h_loc = (tile->topo[1] >> 4) | (((tile->topo[2] >> 2) & 0x3) << 4);
>> +
>> + connector->has_tile = true;
>> + if (tile->tile_cap & 0x80)
>> + connector->tile_is_single_monitor = true;
>> +
>> + connector->num_h_tile = num_h_tile + 1;
>> + connector->num_v_tile = num_v_tile + 1;
>> + connector->tile_h_loc = tile_h_loc;
>> + connector->tile_v_loc = tile_v_loc;
>> + connector->tile_h_size = w + 1;
>> + connector->tile_v_size = h + 1;
>> +
>> + DRM_DEBUG_KMS("tile cap 0x%x\n", tile->tile_cap);
>> + DRM_DEBUG_KMS("tile_size %d x %d\n", w + 1, h + 1);
>> + DRM_DEBUG_KMS("topo num tiles %dx%d, location %dx%d\n",
>> + num_h_tile + 1, num_v_tile + 1, tile_h_loc, tile_v_loc);
>> + DRM_DEBUG_KMS("vend %c%c%c\n", tile->topology_id[0], tile->topology_id[1], tile->topology_id[2]);
>> +
>> + tg = drm_mode_get_tile_group(connector->dev, tile->topology_id);
>> + if (!tg) {
>> + tg = drm_mode_create_tile_group(connector->dev, tile->topology_id);
>> + }
>> + if (!tg)
>> + return -ENOMEM;
>> +
>> + if (connector->tile_group != tg) {
>> + /* if we haven't got a pointer,
>> + take the reference, drop ref to old tile group */
>> + if (connector->tile_group) {
>> + drm_mode_put_tile_group(connector->dev, connector->tile_group);
>> + }
>> + connector->tile_group = tg;
>> + } else
>> + /* if same tile group, then release the ref we just took. */
>> + drm_mode_put_tile_group(connector->dev, tg);
>> + return 0;
>> +}
>> +
>> static int drm_parse_display_id(struct drm_connector *connector,
>> u8 *displayid, int length,
>> bool is_edid_extension)
>> @@ -4162,6 +4216,7 @@ static int drm_parse_display_id(struct drm_connector *connector,
>> struct displayid_block *block;
>> u8 csum = 0;
>> int i;
>> + int ret;
>>
>> if (is_edid_extension)
>> idx = 1;
>> @@ -4187,58 +4242,10 @@ static int drm_parse_display_id(struct drm_connector *connector,
>> block->tag, block->rev, block->num_bytes);
>>
>> switch (block->tag) {
>> - case DATA_BLOCK_TILED_DISPLAY: {
>> - struct displayid_tiled_block *tile = (struct displayid_tiled_block *)block;
>> -
>> - u16 w, h;
>> - u8 tile_v_loc, tile_h_loc;
>> - u8 num_v_tile, num_h_tile;
>> - struct drm_tile_group *tg;
>> -
>> - w = tile->tile_size[0] | tile->tile_size[1] << 8;
>> - h = tile->tile_size[2] | tile->tile_size[3] << 8;
>> -
>> - num_v_tile = (tile->topo[0] & 0xf) | (tile->topo[2] & 0x30);
>> - num_h_tile = (tile->topo[0] >> 4) | ((tile->topo[2] >> 2) & 0x30);
>> - tile_v_loc = (tile->topo[1] & 0xf) | ((tile->topo[2] & 0x3) << 4);
>> - tile_h_loc = (tile->topo[1] >> 4) | (((tile->topo[2] >> 2) & 0x3) << 4);
>> -
>> - connector->has_tile = true;
>> - if (tile->tile_cap & 0x80)
>> - connector->tile_is_single_monitor = true;
>> -
>> - connector->num_h_tile = num_h_tile + 1;
>> - connector->num_v_tile = num_v_tile + 1;
>> - connector->tile_h_loc = tile_h_loc;
>> - connector->tile_v_loc = tile_v_loc;
>> - connector->tile_h_size = w + 1;
>> - connector->tile_v_size = h + 1;
>> -
>> - DRM_DEBUG_KMS("tile cap 0x%x\n", tile->tile_cap);
>> - DRM_DEBUG_KMS("tile_size %d x %d\n", w + 1, h + 1);
>> - DRM_DEBUG_KMS("topo num tiles %dx%d, location %dx%d\n",
>> - num_h_tile + 1, num_v_tile + 1, tile_h_loc, tile_v_loc);
>> - DRM_DEBUG_KMS("vend %c%c%c\n", tile->topology_id[0], tile->topology_id[1], tile->topology_id[2]);
>> -
>> - tg = drm_mode_get_tile_group(connector->dev, tile->topology_id);
>> - if (!tg) {
>> - tg = drm_mode_create_tile_group(connector->dev, tile->topology_id);
>> - }
>> - if (!tg)
>> - return -ENOMEM;
>> -
>> - if (connector->tile_group != tg) {
>> - /* if we haven't got a pointer,
>> - take the reference, drop ref to old tile group */
>> - if (connector->tile_group) {
>> - drm_mode_put_tile_group(connector->dev, connector->tile_group);
>> - }
>> - connector->tile_group = tg;
>> - } else
>> - /* if same tile group, then release the ref we just took. */
>> - drm_mode_put_tile_group(connector->dev, tg);
>> - }
>> - break;
>> + case DATA_BLOCK_TILED_DISPLAY:
>> + ret = drm_parse_tiled_block(connector, block);
>> + if (ret)
>> + return ret;
break; here.
>> default:
>> printk("unknown displayid tag %d\n", block->tag);
>> break;
--
Jani Nikula, Intel Open Source Technology Center
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