drm/amd/powerplay: add get atom data table helper

This patch adds get atom data table helper for smu future use.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Kevin Wang <Kevin1.Wang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index a6f19b5..901c99f 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -27,6 +27,7 @@
 #include "amdgpu_smu.h"
 #include "soc15_common.h"
 #include "smu_v11_0.h"
+#include "atom.h"
 
 static int smu_set_funcs(struct amdgpu_device *adev)
 {
@@ -59,6 +60,22 @@ static int smu_early_init(void *handle)
        return 0;
 }
 
+int smu_get_atom_data_table(struct smu_context *smu, uint32_t table,
+                           uint16_t *size, uint8_t *frev, uint8_t *crev,
+                           uint8_t **addr)
+{
+       struct amdgpu_device *adev = smu->adev;
+       uint16_t data_start;
+
+       if (!amdgpu_atom_parse_data_header(adev->mode_info.atom_context, table,
+                                          size, frev, crev, &data_start))
+               return -EINVAL;
+
+       *addr = (uint8_t *)adev->mode_info.atom_context->bios + data_start;
+
+       return 0;
+}
+
 static int smu_initialize_pptable(struct smu_context *smu)
 {
        /* TODO */

diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 215902f..88eee63 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -106,6 +106,10 @@ struct smu_funcs
 #define smu_send_smc_msg_with_param(smu, msg, param) \
        ((smu)->funcs->send_smc_msg_with_param? (smu)->funcs->send_smc_msg_with_param((smu), (msg), (param)) : 0)
 
+extern int smu_get_atom_data_table(struct smu_context *smu, uint32_t table,
+                                  uint16_t *size, uint8_t *frev, uint8_t *crev,
+                                  uint8_t **addr);
+
 extern const struct amd_ip_funcs smu_ip_funcs;
 
 extern const struct amdgpu_ip_block_version smu_v11_0_ip_block;