drm/amd/powerplay: need to notify system bios pcie device ready

before request performance state.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_acpi.c
index d19a9b62424280fc1590256a19af27e0c0756700..a3c38bbd1e94d5596ba9190772d40b1fcb5c28db 100644 (file)
--- 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 3bd5e69b90456641c8b318fa89fc74b6d99ab89f..3df5de2cdab0254becae8ab384e4f8feb2cd2c8d 100644 (file)
--- 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);