Commit ccba4e5b authored by Wenjing Liu's avatar Wenjing Liu Committed by Alex Deucher

drm/amd/display: add more link_hwss types and method to decide which one

[why]
as we add more link_hwss we are making a generic way to determine which type
of link_hwss we should use.
Later on we may think of introduce a link policy layer. it could be a thin layer
that decide the type of link_hwss we use. So instead of passing in link and link_res
we can just pass in link_policy and swtich based on link_policy->get_link_hwss_type.
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarWenjing Liu <wenjing.liu@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5279e091
......@@ -844,7 +844,16 @@ void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable)
}
}
/******************************* dio_link_hwss ********************************/
static void set_dummy_throttled_vcp_size(struct pipe_ctx *pipe_ctx,
struct fixed31_32 throttled_vcp_size);
/************************* below goes to dio_link_hwss ************************/
static bool can_use_dio_link_hwss(const struct dc_link *link,
const struct link_resource *link_res)
{
return link->link_enc != NULL;
}
static void set_dio_throttled_vcp_size(struct pipe_ctx *pipe_ctx,
struct fixed31_32 throttled_vcp_size)
{
......@@ -855,7 +864,17 @@ static void set_dio_throttled_vcp_size(struct pipe_ctx *pipe_ctx,
throttled_vcp_size);
}
/***************************** hpo_dp_link_hwss *******************************/
static const struct dc_link_hwss dio_link_hwss = {
.set_throttled_vcp_size = set_dio_throttled_vcp_size,
};
/*********************** below goes to hpo_dp_link_hwss ***********************/
static bool can_use_dp_hpo_link_hwss(const struct dc_link *link,
const struct link_resource *link_res)
{
return link_res->hpo_dp_link_enc != NULL;
}
static void set_dp_hpo_throttled_vcp_size(struct pipe_ctx *pipe_ctx,
struct fixed31_32 throttled_vcp_size)
{
......@@ -898,15 +917,33 @@ static const struct dc_link_hwss hpo_dp_link_hwss = {
*/
.set_hblank_min_symbol_width = set_dp_hpo_hblank_min_symbol_width,
};
/*********************** below goes to dpia_link_hwss *************************/
static bool can_use_dpia_link_hwss(const struct dc_link *link,
const struct link_resource *link_res)
{
return link->is_dig_mapping_flexible &&
link->dc->res_pool->funcs->link_encs_assign;
}
static const struct dc_link_hwss dio_link_hwss = {
.set_throttled_vcp_size = set_dio_throttled_vcp_size,
static const struct dc_link_hwss dpia_link_hwss = {
.set_throttled_vcp_size = set_dummy_throttled_vcp_size,
};
/*********************** below goes to link_hwss ******************************/
static void set_dummy_throttled_vcp_size(struct pipe_ctx *pipe_ctx,
struct fixed31_32 throttled_vcp_size)
{
return;
}
static const struct dc_link_hwss dummy_link_hwss = {
.set_throttled_vcp_size = set_dummy_throttled_vcp_size,
};
const struct dc_link_hwss *dc_link_hwss_get(const struct dc_link *link,
const struct link_resource *link_res)
{
if (link_res->hpo_dp_link_enc)
if (can_use_dp_hpo_link_hwss(link, link_res))
/* TODO: some assumes that if decided link settings is 128b/132b
* channel coding format hpo_dp_link_enc should be used.
* Others believe that if hpo_dp_link_enc is available in link
......@@ -925,8 +962,12 @@ const struct dc_link_hwss *dc_link_hwss_get(const struct dc_link *link,
* do work for all functions
*/
return &hpo_dp_link_hwss;
else
else if (can_use_dpia_link_hwss(link, link_res))
return &dpia_link_hwss;
else if (can_use_dio_link_hwss(link, link_res))
return &dio_link_hwss;
else
return &dummy_link_hwss;
}
#undef DC_LOGGER
......@@ -78,6 +78,9 @@ struct fixed31_32;
struct pipe_ctx;
struct dc_link_hwss {
/* you must define a dummy implementation and assign the function to
* dummy_link_hwss if you don't want to check for NULL pointer
*/
void (*set_throttled_vcp_size)(struct pipe_ctx *pipe_ctx,
struct fixed31_32 throttled_vcp_size);
......
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