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authorChris Park <chris.park@amd.com>2025-03-31 16:04:55 -0400
committerAlex Deucher <alexander.deucher@amd.com>2025-04-21 11:27:25 -0400
commit724a4b400bfcce27b155863fc36fe7bef58f768e (patch)
tree13e4c3eb10508a40d8b72277dec42953649354eb /drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
parentf53d0f48a89ccf13a1598985ab1782ec105cb049 (diff)
drm/amd/display: Implement HDMI Read Request
[Why] Read Request provides alterative method to polling to the HDMI sinks that support it. [How] Implement Read Request where interrupt can be generated by the sink. Reviewed-by: Joshua Aberback <joshua.aberback@amd.com> Signed-off-by: Chris Park <chris.park@amd.com> Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Tested-by: Mark Broadworth <mark.broadworth@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c')
-rw-r--r--drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
index b099989d9364..942d9f0b6df2 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c
@@ -411,6 +411,20 @@ enum dc_irq_source dal_irq_get_rx_source(
}
}
+enum dc_irq_source dal_irq_get_read_request(
+ const struct gpio *irq)
+{
+ enum gpio_id id = dal_gpio_get_id(irq);
+
+ switch (id) {
+ case GPIO_ID_HPD:
+ return (enum dc_irq_source)(DC_IRQ_SOURCE_DCI2C_RR_DDC1 +
+ dal_gpio_get_enum(irq));
+ default:
+ return DC_IRQ_SOURCE_INVALID;
+ }
+}
+
enum gpio_result dal_irq_setup_hpd_filter(
struct gpio *irq,
struct gpio_hpd_config *config)