From: Robin Chen robin.chen@amd.com

[Why] This is the fix for the defect of commit 11ec7d8f2263 ("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: 11ec7d8f2263 ("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 --- 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 4b47fa00610b..45ab48fe5d00 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -1080,4 +1080,11 @@ 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 995032a341b3..3951d48118c4 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_factory.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_factory.c @@ -528,14 +528,18 @@ static bool 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); @@ -543,6 +547,7 @@ static bool 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; } }