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drm/amd/display: Add passive dongle support for HPD Rearch 

Add HPD delay timer support to
1. Single/dual link DVI.
2. DP to HDMI passive dongle
3. DP to DVI passive dongle.

Signed-off-by: John Barberiz <jbarberi@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
John Barberiz 2018-02-09 17:48:18 -05:00 committed by Alex Deucher
parent 88ac3ddab1
commit 11fffe45b7
2 changed files with 6 additions and 3 deletions
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7
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -2358,11 +2358,14 @@ void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable)
core_dc->hwss.set_avmute(pipe_ctx, enable);
}
void dc_link_disable_hpd_filter(struct dc_link *link)
void dc_link_enable_hpd_filter(struct dc_link *link, bool enable)
{
struct gpio *hpd;
if (!link->is_hpd_filter_disabled) {
if (enable) {
link->is_hpd_filter_disabled = false;
program_hpd_filter(link);
} else {
link->is_hpd_filter_disabled = true;
/* Obtain HPD handle */
hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service);

2
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@ -197,7 +197,7 @@ bool dc_link_dp_set_test_pattern(
const unsigned char *p_custom_pattern,
unsigned int cust_pattern_size);
void dc_link_disable_hpd_filter(struct dc_link *link);
void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
/*
* DPCD access interfaces