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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
Download Patch File Download Diff File Expand all files Collapse all files

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, int id,
struct drm_dp_payload *payload); 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, static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_branch *mstb); struct drm_dp_mst_branch *mstb);
static int drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr, 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; return false;
} }
#if 0
static int build_dpcd_read(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32 offset, u8 num_bytes) 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; 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; return 0;
} }
#endif
static int drm_dp_send_sideband_msg(struct drm_dp_mst_topology_mgr *mgr, static int drm_dp_send_sideband_msg(struct drm_dp_mst_topology_mgr *mgr,
bool up, u8 *msg, int len) 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); EXPORT_SYMBOL(drm_dp_update_payload_part2);
#if 0 /* unused as of yet */ int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port,
struct drm_dp_mst_port *port, int offset, int size, u8 *bytes)
int offset, int size)
{ {
int len; int len;
struct drm_dp_sideband_msg_tx *txmsg; 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) if (!txmsg)
return -ENOMEM; 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; txmsg->dst = port->parent;
drm_dp_queue_down_tx(mgr, txmsg); drm_dp_queue_down_tx(mgr, txmsg);
return 0; 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, int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port, struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes) int offset, int size, u8 *bytes)
{ {
int len; int len;
int ret; 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); drm_dp_put_mst_branch_device(mstb);
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(drm_dp_send_dpcd_write);
int drm_dp_mst_get_max_sdp_streams_supported( int drm_dp_mst_get_max_sdp_streams_supported(
struct drm_dp_mst_topology_mgr *mgr, 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_port *port,
struct drm_dp_mst_dsc_info *dsc_info); 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( int drm_dp_mst_get_max_sdp_streams_supported(
struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_port *port); struct drm_dp_mst_port *port);