diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 50aa9a4521f3..02e1c3b188fd 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -127,6 +127,8 @@ static bool program_hpd_filter( int delay_on_connect_in_ms = 0; int delay_on_disconnect_in_ms = 0; + if (link->is_hpd_filter_disabled) + return false; /* Verify feature is supported */ switch (link->connector_signal) { case SIGNAL_TYPE_DVI_SINGLE_LINK: @@ -2346,3 +2348,33 @@ 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) +{ + struct gpio *hpd; + + if (!link->is_hpd_filter_disabled) { + link->is_hpd_filter_disabled = true; + /* Obtain HPD handle */ + hpd = get_hpd_gpio(link->ctx->dc_bios, link->link_id, link->ctx->gpio_service); + + if (!hpd) + return; + + /* Setup HPD filtering */ + if (dal_gpio_open(hpd, GPIO_MODE_INTERRUPT) == GPIO_RESULT_OK) { + struct gpio_hpd_config config; + + config.delay_on_connect = 0; + config.delay_on_disconnect = 0; + + dal_irq_setup_hpd_filter(hpd, &config); + + dal_gpio_close(hpd); + } else { + ASSERT_CRITICAL(false); + } + /* Release HPD handle */ + dal_gpio_destroy_irq(&hpd); + } +} + |