diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c b/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c index ed54e1c819be..78940cb20e10 100644 --- a/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c +++ b/drivers/gpu/drm/amd/display/dc/irq/dcn21/irq_service_dcn21.c @@ -135,6 +135,31 @@ enum dc_irq_source to_dal_irq_source_dcn21( return DC_IRQ_SOURCE_INVALID; } +uint32_t dc_get_hpd_state_dcn21(struct irq_service *irq_service, enum dc_irq_source source) +{ + const struct irq_source_info *info; + uint32_t addr; + uint32_t value; + uint32_t current_status; + + info = find_irq_source_info(irq_service, source); + if (!info) + return 0; + + addr = info->status_reg; + if (!addr) + return 0; + + value = dm_read_reg(irq_service->ctx, addr); + current_status = + get_reg_field_value( + value, + HPD0_DC_HPD_INT_STATUS, + DC_HPD_SENSE); + + return current_status; +} + static bool hpd_ack( struct irq_service *irq_service, const struct irq_source_info *info) |