From: Robin Chen robin.chen@amd.com
[ Upstream commit eeefe7c4820b6baa0462a8b723ea0a3b5846ccae ]
[Why] This is the fix for the defect of commit ab144f0b4ad6 ("drm/amd/display: Allow individual control of eDP hotplug support").
[How] To revise the default eDP hotplug setting and use the enum to git rid of the magic number for different options.
Fixes: ab144f0b4ad6 ("drm/amd/display: Allow individual control of eDP hotplug support") Cc: stable@vger.kernel.org Cc: Mario Limonciello mario.limonciello@amd.com Reviewed-by: Wenjing Liu Wenjing.Liu@amd.com Acked-by: Qingqing Zhuo qingqing.zhuo@amd.com Signed-off-by: Robin Chen robin.chen@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/dc_types.h | 7 +++++++ drivers/gpu/drm/amd/display/dc/link/link_factory.c | 9 +++++++-- 2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h index f28b8597cc1e6..cba65766ef47b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -1086,4 +1086,11 @@ struct dc_dpia_bw_alloc { };
#define MAX_SINKS_PER_LINK 4 + +enum dc_hpd_enable_select { + HPD_EN_FOR_ALL_EDP = 0, + HPD_EN_FOR_PRIMARY_EDP_ONLY, + HPD_EN_FOR_SECONDARY_EDP_ONLY, +}; + #endif /* DC_TYPES_H_ */ diff --git a/drivers/gpu/drm/amd/display/dc/link/link_factory.c b/drivers/gpu/drm/amd/display/dc/link/link_factory.c index aeb26a4d539e9..8aaf14afa4271 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_factory.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_factory.c @@ -274,14 +274,18 @@ static bool dc_link_construct_phy(struct dc_link *link, link->irq_source_hpd = DC_IRQ_SOURCE_INVALID;
switch (link->dc->config.allow_edp_hotplug_detection) { - case 1: // only the 1st eDP handles hotplug + case HPD_EN_FOR_ALL_EDP: + link->irq_source_hpd_rx = + dal_irq_get_rx_source(link->hpd_gpio); + break; + case HPD_EN_FOR_PRIMARY_EDP_ONLY: if (link->link_index == 0) link->irq_source_hpd_rx = dal_irq_get_rx_source(link->hpd_gpio); else link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; break; - case 2: // only the 2nd eDP handles hotplug + case HPD_EN_FOR_SECONDARY_EDP_ONLY: if (link->link_index == 1) link->irq_source_hpd_rx = dal_irq_get_rx_source(link->hpd_gpio); @@ -289,6 +293,7 @@ static bool dc_link_construct_phy(struct dc_link *link, link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; break; default: + link->irq_source_hpd = DC_IRQ_SOURCE_INVALID; break; } }