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drm/amd/display: Add function pointer for validate bw usb4

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[WHY]
In order to follow the new protocol of calling link functions

[HOW]
Add the function pointer to the link_srv

Reviewed-by: Kshitij Bhardwaj <kshitij.bhardwaj1@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Mustapha Ghaddar <mghaddar@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mustapha Ghaddar
2023-03-08 10:27:17 -05:00
committed by Alex Deucher
parent b5006f873b
commit a8b537605e
8 changed files with 52 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/amd/display/dc/link/link_factory.c
View File

@@ -99,6 +99,7 @@ static void construct_link_service_validation(struct link_service *link_srv)
{
link_srv->validate_mode_timing = link_validate_mode_timing;
link_srv->dp_link_bandwidth_kbps = dp_link_bandwidth_kbps;
link_srv->validate_dpia_bandwidth = link_validate_dpia_bandwidth;
}
/* link dpms owns the programming sequence of stream's dpms state associated

18
drivers/gpu/drm/amd/display/dc/link/link_validation.c
View File

@@ -30,6 +30,7 @@
*/
#include "link_validation.h"
#include "protocols/link_dp_capability.h"
#include "protocols/link_dp_dpia_bw.h"
#include "resource.h"
#define DC_LOGGER_INIT(logger)
@@ -343,3 +344,20 @@ enum dc_status link_validate_mode_timing(
return DC_OK;
}
bool link_validate_dpia_bandwidth(const struct dc_stream_state *stream, const unsigned int num_streams)
{
bool ret = true;
int bw_needed[MAX_DPIA_NUM];
struct dc_link *link[MAX_DPIA_NUM];
if (!num_streams || num_streams > MAX_DPIA_NUM)
return ret;
for (uint8_t i = 0; i < num_streams; ++i) {
link[i] = stream[i].link;
bw_needed[i] = dc_bandwidth_in_kbps_from_timing(&stream[i].timing);
}
return ret;
}

4
drivers/gpu/drm/amd/display/dc/link/link_validation.h
View File

@@ -29,7 +29,11 @@ enum dc_status link_validate_mode_timing(
const struct dc_stream_state *stream,
struct dc_link *link,
const struct dc_crtc_timing *timing);
bool link_validate_dpia_bandwidth(
const struct dc_stream_state *stream,
const unsigned int num_streams);
uint32_t dp_link_bandwidth_kbps(
const struct dc_link *link,
const struct dc_link_settings *link_settings);
#endif /* __LINK_VALIDATION_H__ */

9
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia_bw.c
View File

@@ -33,10 +33,6 @@
#define DC_LOGGER \
link->ctx->logger
/* Number of Host Routers per motherboard is 2 */
#define MAX_HR_NUM 2
/* Number of DPIA per host router is 2 */
#define MAX_DPIA_NUM (MAX_HR_NUM * 2)
#define Kbps_TO_Gbps (1000 * 1000)
// ------------------------------------------------------------------
@@ -379,9 +375,8 @@ void dpia_handle_bw_alloc_response(struct dc_link *link, uint8_t bw, uint8_t res
// 1. If due to unplug of other sink
if (estimated == host_router_total_estimated_bw) {
// First update the estimated & max_bw fields
if (link->dpia_bw_alloc_config.estimated_bw < estimated) {
if (link->dpia_bw_alloc_config.estimated_bw < estimated)
link->dpia_bw_alloc_config.estimated_bw = estimated;
}
}
// 2. If due to realloc bw btw 2 dpia due to plug OR realloc unused Bw
else {
@@ -464,7 +459,7 @@ int link_dp_dpia_allocate_usb4_bandwidth_for_stream(struct dc_link *link, int re
out:
return ret;
}
bool dpia_validate_usb4_bw(struct dc_link **link, int *bw_needed_per_dpia, uint8_t num_dpias)
bool dpia_validate_usb4_bw(struct dc_link **link, int *bw_needed_per_dpia, const unsigned int num_dpias)
{
bool ret = true;
int bw_needed_per_hr[MAX_HR_NUM] = { 0, 0 };

7
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia_bw.h
View File

@@ -28,6 +28,11 @@
#include "link.h"
/* Number of Host Routers per motherboard is 2 */
#define MAX_HR_NUM 2
/* Number of DPIA per host router is 2 */
#define MAX_DPIA_NUM (MAX_HR_NUM * 2)
/*
* Host Router BW type
*/
@@ -92,6 +97,6 @@ void dpia_handle_bw_alloc_response(struct dc_link *link, uint8_t bw, uint8_t res
*
* return: TRUE if bw used by DPIAs doesn't exceed available BW else return FALSE
*/
bool dpia_validate_usb4_bw(struct dc_link **link, int *bw_needed, uint8_t num_dpias);
bool dpia_validate_usb4_bw(struct dc_link **link, int *bw_needed, const unsigned int num_dpias);
#endif /* DC_INC_LINK_DP_DPIA_BW_H_ */