From: Rex Zhu <Rex.Zhu@xxxxxxx>
before request performance state.
Signed-off-by: Rex Zhu <Rex.Zhu@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Reviewed-by: Ken Wang <Qingqing.Wang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c | 16 +++++++++++++++-
drivers/gpu/drm/amd/powerplay/inc/pp_acpi.h | 1 +
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c
index d19a9b6..a3c38bb 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c
@@ -44,6 +44,20 @@ bool acpi_atcs_functions_supported(void *device, uint32_t index)
return result == 0 ? (output_buf.function_bits & (1 << (index - 1))) != 0 : false;
}
+bool acpi_atcs_notify_pcie_device_ready(void *device)
+{
+ int32_t temp_buffer = 1;
+
+ return cgs_call_acpi_method(device, CGS_ACPI_METHOD_ATCS,
+ ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION,
+ &temp_buffer,
+ NULL,
+ 0,
+ sizeof(temp_buffer),
+ 0);
+}
+
+
int acpi_pcie_perf_request(void *device, uint8_t perf_req, bool advertise)
{
struct atcs_pref_req_input atcs_input;
@@ -52,7 +66,7 @@ int acpi_pcie_perf_request(void *device, uint8_t perf_req, bool advertise)
int result;
struct cgs_system_info info = {0};
- if (!acpi_atcs_functions_supported(device, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST))
+ if( 0 != acpi_atcs_notify_pcie_device_ready(device))
return -EINVAL;
info.size = sizeof(struct cgs_system_info);
diff --git a/drivers/gpu/drm/amd/powerplay/inc/pp_acpi.h b/drivers/gpu/drm/amd/powerplay/inc/pp_acpi.h
index 3bd5e69..3df5de2 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/pp_acpi.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/pp_acpi.h
@@ -26,3 +26,4 @@ extern bool acpi_atcs_functions_supported(void *device,
extern int acpi_pcie_perf_request(void *device,
uint8_t perf_req,
bool advertise);
+extern bool acpi_atcs_notify_pcie_device_ready(void *device);
--
2.5.5
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