[PATCH] drm/amdgpu: differenciate between LP and non-LP DDR memory

[Zhang, Hawking]

[AMD Official Use Only - General]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Alex Deucher
Sent: Monday, May 23, 2022 23:39
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
Subject: [PATCH] drm/amdgpu: differenciate between LP and non-LP DDR memory

Some applications want to know whether the memory is LP or not.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 8 ++++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c       | 4 +++-
 include/uapi/drm/amdgpu_drm.h                    | 2 ++
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
index 63e0293edc5f..fd8f3731758e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
@@ -188,13 +188,17 @@ static int convert_atom_mem_type_to_vram_type(struct amdgpu_device *adev,
                        vram_type = AMDGPU_VRAM_TYPE_DDR3;
                        break;
                case Ddr4MemType:
-               case LpDdr4MemType:
                        vram_type = AMDGPU_VRAM_TYPE_DDR4;
                        break;
+               case LpDdr4MemType:
+                       vram_type = AMDGPU_VRAM_TYPE_LPDDR4;
+                       break;
                case Ddr5MemType:
-               case LpDdr5MemType:
                        vram_type = AMDGPU_VRAM_TYPE_DDR5;
                        break;
+               case LpDdr5MemType:
+                       vram_type = AMDGPU_VRAM_TYPE_LPDDR5;
+                       break;
                default:
                        vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
                        break;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 2780eb5b533a..0d3fd1db5474 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1020,7 +1020,9 @@ static const char *amdgpu_vram_names[] = {
        "DDR3",
        "DDR4",
        "GDDR6",
-       "DDR5"
+       "DDR5",
+       "LPDDR4",
+       "LPDDR5"
 };

 /**
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h index bb50644a2129..3a2674b4a2d9 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -994,6 +994,8 @@ struct drm_amdgpu_info_vbios {  #define AMDGPU_VRAM_TYPE_DDR4  8  #define AMDGPU_VRAM_TYPE_GDDR6 9  #define AMDGPU_VRAM_TYPE_DDR5  10
+#define AMDGPU_VRAM_TYPE_LPDDR4 11
+#define AMDGPU_VRAM_TYPE_LPDDR5 12

 struct drm_amdgpu_info_device {
        /** PCI Device ID */
--
2.35.3