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ANDROID: GKI: Add drm_dp_send_dpcd_{read,write} accessor functions

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Resolves an abi diff.

Bug: 152417756
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: I36e093ddcc1e2645e05a2a683ac52bd2f629dc35
This commit is contained in:
Alistair Delva 2020-04-17 11:30:20 -07:00
parent 35acc5c9dd
commit dec3fa208e
2 changed files with 17 additions and 15 deletions
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24
drivers/gpu/drm/drm_dp_mst_topology.c
View file

@ -51,10 +51,6 @@ static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr,
int id,
struct drm_dp_payload *payload);
static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes);
static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_branch *mstb);
static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
@ -1404,7 +1400,6 @@ static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr,
return false;
}
#if 0
static int build_dpcd_read(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32 offset, u8 num_bytes)
{
struct drm_dp_sideband_msg_req_body req;
@ -1417,7 +1412,6 @@ static int build_dpcd_read(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32
return 0;
}
#endif
static int drm_dp_send_sideband_msg(struct drm_dp_mst_topology_mgr *mgr,
bool up, u8 *msg, int len)
@ -2024,10 +2018,9 @@ int drm_dp_update_payload_part2(struct drm_dp_mst_topology_mgr *mgr)
}
EXPORT_SYMBOL(drm_dp_update_payload_part2);
#if 0 /* unused as of yet */
static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size)
int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes)
{
int len;
struct drm_dp_sideband_msg_tx *txmsg;
@ -2036,18 +2029,18 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
if (!txmsg)
return -ENOMEM;
len = build_dpcd_read(txmsg, port->port_num, 0, 8);
len = build_dpcd_read(txmsg, port->port_num, offset, size);
txmsg->dst = port->parent;
drm_dp_queue_down_tx(mgr, txmsg);
return 0;
}
#endif
EXPORT_SYMBOL_GPL(drm_dp_send_dpcd_read);
static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes)
int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes)
{
int len;
int ret;
@ -2081,6 +2074,7 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
drm_dp_put_mst_branch_device(mstb);
return ret;
}
EXPORT_SYMBOL_GPL(drm_dp_send_dpcd_write);
int drm_dp_mst_get_max_sdp_streams_supported(
struct drm_dp_mst_topology_mgr *mgr,

8
include/drm/drm_dp_mst_helper.h
View file

@ -664,6 +664,14 @@ int drm_dp_mst_update_dsc_info(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
struct drm_dp_mst_dsc_info *dsc_info);
int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes);
int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes);
int drm_dp_mst_get_max_sdp_streams_supported(
struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port);