[PATCH 06/12] drm/amdgpu: add atom interfaces for CGS

[Alex Deucher]

From: Chunming Zhou <david1.z...@amd.com>

This implements the interface for atombios command
and data table access.

Reviewed-by: Jammy Zhou <Jammy.Zhou at amd.com>
Signed-off-by: Chunming Zhou <David1.Zhou at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 93fbf35..c1ee39e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -24,6 +24,7 @@
 #include <linux/pci.h>
 #include "amdgpu.h"
 #include "cgs_linux.h"
+#include "atom.h"

 struct amdgpu_cgs_device {
        struct cgs_device base;
@@ -221,24 +222,39 @@ static const void *amdgpu_cgs_atom_get_data_table(void 
*cgs_device,
                                                  unsigned table, uint16_t 
*size,
                                                  uint8_t *frev, uint8_t *crev)
 {
-       /* TODO */
+       CGS_FUNC_ADEV;
+       uint16_t data_start;
+
+       if (amdgpu_atom_parse_data_header(
+                   adev->mode_info.atom_context, table, size,
+                   frev, crev, &data_start))
+               return (uint8_t*)adev->mode_info.atom_context->bios +
+                       data_start;
+
        return NULL;
 }

 static int amdgpu_cgs_atom_get_cmd_table_revs(void *cgs_device, unsigned table,
                                              uint8_t *frev, uint8_t *crev)
 {
-       /* TODO */
-       return 0;
+       CGS_FUNC_ADEV;
+
+       if (amdgpu_atom_parse_cmd_header(
+                   adev->mode_info.atom_context, table,
+                   frev, crev))
+               return 0;
+
+       return -EINVAL;
 }

 static int amdgpu_cgs_atom_exec_cmd_table(void *cgs_device, unsigned table,
                                          void *args)
 {
-       /* TODO */
-       return 0;
-}
+       CGS_FUNC_ADEV;

+       return amdgpu_atom_execute_table(
+               adev->mode_info.atom_context, table, args);
+}

 static int amdgpu_cgs_create_pm_request(void *cgs_device, cgs_handle_t 
*request)
 {
-- 
1.8.3.1