[PATCH 5/6] drm/amd/powerplay: added grbm_idx_mutex lock/unlock to cgs v2 - v2: rename param 'en' as 'lock'

[Evan Quan]

Change-Id: If7088d6046c84355b8f1308d584ab6524ceab724
Signed-off-by: Evan Quan <evan.q...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c  | 12 ++++++++++++
 drivers/gpu/drm/amd/include/cgs_common.h |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 8016f90..3d41cd4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -614,6 +614,17 @@ static int amdgpu_cgs_enter_safe_mode(struct cgs_device 
*cgs_device,
        return 0;
 }
 
+static void amdgpu_cgs_lock_grbm_idx(struct cgs_device *cgs_device,
+                                       bool lock)
+{
+       CGS_FUNC_ADEV;
+
+       if (lock)
+               mutex_lock(&adev->grbm_idx_mutex);
+       else
+               mutex_unlock(&adev->grbm_idx_mutex);
+}
+
 static int amdgpu_cgs_get_firmware_info(struct cgs_device *cgs_device,
                                        enum cgs_ucode_id type,
                                        struct cgs_firmware_info *info)
@@ -1136,6 +1147,7 @@ static const struct cgs_ops amdgpu_cgs_ops = {
        .query_system_info = amdgpu_cgs_query_system_info,
        .is_virtualization_enabled = amdgpu_cgs_is_virtualization_enabled,
        .enter_safe_mode = amdgpu_cgs_enter_safe_mode,
+       .lock_grbm_idx = amdgpu_cgs_lock_grbm_idx,
 };
 
 static const struct cgs_os_ops amdgpu_cgs_os_ops = {
diff --git a/drivers/gpu/drm/amd/include/cgs_common.h 
b/drivers/gpu/drm/amd/include/cgs_common.h
index b46d12d..0214f63 100644
--- a/drivers/gpu/drm/amd/include/cgs_common.h
+++ b/drivers/gpu/drm/amd/include/cgs_common.h
@@ -407,6 +407,8 @@ typedef int (*cgs_is_virtualization_enabled_t)(void 
*cgs_device);
 
 typedef int (*cgs_enter_safe_mode)(struct cgs_device *cgs_device, bool en);
 
+typedef void (*cgs_lock_grbm_idx)(struct cgs_device *cgs_device, bool lock);
+
 struct cgs_ops {
        /* memory management calls (similar to KFD interface) */
        cgs_alloc_gpu_mem_t alloc_gpu_mem;
@@ -442,6 +444,7 @@ struct cgs_ops {
        cgs_query_system_info query_system_info;
        cgs_is_virtualization_enabled_t is_virtualization_enabled;
        cgs_enter_safe_mode enter_safe_mode;
+       cgs_lock_grbm_idx lock_grbm_idx;
 };
 
 struct cgs_os_ops; /* To be define in OS-specific CGS header */
@@ -518,4 +521,6 @@ struct cgs_device
 #define cgs_enter_safe_mode(cgs_device, en) \
                CGS_CALL(enter_safe_mode, cgs_device, en)
 
+#define cgs_lock_grbm_idx(cgs_device, lock) \
+               CGS_CALL(lock_grbm_idx, cgs_device, lock)
 #endif /* _CGS_COMMON_H */
-- 
2.7.4

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