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drm/rockchip: dp_aux_client: parse timing by child node name

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The child node may be not parsed by the order config in dts,
it would be better get child node by name to avoid mismatch.

Change-Id: Ibce47f44720f279eb53f063a351d3b859a371fd8
Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
This commit is contained in:
Zhang Yubing
2025-03-20 10:25:21 +08:00
parent 96aab710fb
commit 97932bdf73
1 changed files with 9 additions and 3 deletions
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12
drivers/gpu/drm/rockchip/rockchip_dp_mst_aux_client.c
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@@ -183,6 +183,7 @@ static int rockchip_dp_aux_client_parse(struct rockchip_dp_aux_client *aux_clien
struct drm_display_mode mode_buf, *mode = &mode_buf;
int rc, port_num, i;
struct edid *edid;
char name[10];
const u8 edid_buf[EDID_LENGTH] = {
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x44, 0x6D,
@@ -205,13 +206,18 @@ static int rockchip_dp_aux_client_parse(struct rockchip_dp_aux_client *aux_clien
if (!ports)
return -ENOMEM;
i = 0;
for_each_child_of_node(of_node, node) {
for (i = 0; i < port_num; i++) {
struct display_timing dt;
struct videomode vm;
snprintf(name, sizeof(name), "mst-dp%d", i);
node = of_get_child_by_name(of_node, name);
if (!node)
return -EINVAL;
edid = kzalloc(sizeof(*edid), GFP_KERNEL);
if (!edid) {
of_node_put(node);
rc = -ENOMEM;
goto fail;
}
@@ -222,13 +228,13 @@ static int rockchip_dp_aux_client_parse(struct rockchip_dp_aux_client *aux_clien
drm_display_mode_from_videomode(&vm, mode);
rockchip_dp_sim_update_dtd(edid, mode);
}
of_node_put(node);
rockchip_dp_sim_update_checksum(edid);
memcpy(&ports[i], &output_port, sizeof(*ports));
ports[i].peer_guid[0] = i;
ports[i].edid = (u8 *)edid;
ports[i].edid_size = sizeof(*edid);
i++;
}
rc = rockchip_dp_mst_sim_update(aux_client->mst_ctx, port_num, ports);