[PATCH 03/12] drm/amd/display: track dpia support

[Aurabindo Pillai]

From: Ausef Yousof <Ausef.Yousof at amd.com>

[why&how]
initialize a flag to track if we previously
supported dpia and write that to boot options

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram at amd.com>
Signed-off-by: Ausef Yousof <Ausef.Yousof at amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
---
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h       | 1 +
 drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c | 7 ++++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index 7abf7d0fd02b..338fdc651f2c 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -568,6 +568,7 @@ struct dmub_srv {
 
 	bool sw_init;
 	bool hw_init;
+	bool dpia_supported;
 
 	uint64_t fb_base;
 	uint64_t fb_offset;
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
index 2228d62adc7e..834e5434ccb8 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
@@ -400,13 +400,14 @@ union dmub_fw_boot_options dmub_dcn35_get_fw_boot_option(struct dmub_srv *dmub)
 void dmub_dcn35_enable_dmub_boot_options(struct dmub_srv *dmub, const struct dmub_srv_hw_params *params)
 {
 	union dmub_fw_boot_options boot_options = {0};
-	union dmub_fw_boot_options cur_boot_options = {0};
 
-	cur_boot_options = dmub_dcn35_get_fw_boot_option(dmub);
+	if (!dmub->dpia_supported) {
+		dmub->dpia_supported = dmub_dcn35_get_fw_boot_option(dmub).bits.enable_dpia;
+	}
 
 	boot_options.bits.z10_disable = params->disable_z10;
 	boot_options.bits.dpia_supported = params->dpia_supported;
-	boot_options.bits.enable_dpia = cur_boot_options.bits.enable_dpia && !params->disable_dpia;
+	boot_options.bits.enable_dpia = dmub->dpia_supported && !params->disable_dpia;
 	boot_options.bits.usb4_cm_version = params->usb4_cm_version;
 	boot_options.bits.dpia_hpd_int_enable_supported = params->dpia_hpd_int_enable_supported;
 	boot_options.bits.power_optimization = params->power_optimization;
-- 
2.50.1