[PATCH 2/3] drm/amdgpu/umsch: power on/off UMSCH by DLDO

[Gopalakrishnan, Veerabadhran (Veera)]

[AMD Official Use Only - General]

Reviewed-by: Veerabadhran Gopalakrishnan <Veerabadhran.Gopalakrishnan at amd.com>

-Veera

-----Original Message-----
From: Yu, Lang <Lang.Yu at amd.com>
Sent: Saturday, October 7, 2023 2:24 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Zhang, Yifan <Yifan1.Zhang at amd.com>; Gopalakrishnan, Veerabadhran (Veera) <Veerabadhran.Gopalakrishnan at amd.com>; Yu, Lang <Lang.Yu at amd.com>
Subject: [PATCH 2/3] drm/amdgpu/umsch: power on/off UMSCH by DLDO

VCN 4.0.5 uses DLDO.

Signed-off-by: Lang Yu <Lang.Yu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c b/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c
index a60178156c77..7e79954c833b 100644
--- a/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c
@@ -34,6 +34,16 @@
 #include "umsch_mm_4_0_api_def.h"
 #include "umsch_mm_v4_0.h"

+#define regUVD_IPX_DLDO_CONFIG                             0x0064
+#define regUVD_IPX_DLDO_CONFIG_BASE_IDX                    1
+#define regUVD_IPX_DLDO_STATUS                             0x0065
+#define regUVD_IPX_DLDO_STATUS_BASE_IDX                    1
+
+#define UVD_IPX_DLDO_CONFIG__ONO0_PWR_CONFIG__SHIFT        0x00000002
+#define UVD_IPX_DLDO_CONFIG__ONO0_PWR_CONFIG_MASK          0x0000000cUL
+#define UVD_IPX_DLDO_STATUS__ONO0_PWR_STATUS__SHIFT        0x00000001
+#define UVD_IPX_DLDO_STATUS__ONO0_PWR_STATUS_MASK          0x00000002UL
+
 static int umsch_mm_v4_0_load_microcode(struct amdgpu_umsch_mm *umsch)  {
        struct amdgpu_device *adev = umsch->ring.adev; @@ -50,6 +60,14 @@ static int umsch_mm_v4_0_load_microcode(struct amdgpu_umsch_mm *umsch)

        umsch->cmd_buf_curr_ptr = umsch->cmd_buf_ptr;

+       if (adev->ip_versions[VCN_HWIP][0] == IP_VERSION(4, 0, 5)) {
+               WREG32_SOC15(VCN, 0, regUVD_IPX_DLDO_CONFIG,
+                       1 << UVD_IPX_DLDO_CONFIG__ONO0_PWR_CONFIG__SHIFT);
+               SOC15_WAIT_ON_RREG(VCN, 0, regUVD_IPX_DLDO_STATUS,
+                       0 << UVD_IPX_DLDO_STATUS__ONO0_PWR_STATUS__SHIFT,
+                       UVD_IPX_DLDO_STATUS__ONO0_PWR_STATUS_MASK);
+       }
+
        data = RREG32_SOC15(VCN, 0, regUMSCH_MES_RESET_CTRL);
        data = REG_SET_FIELD(data, UMSCH_MES_RESET_CTRL, MES_CORE_SOFT_RESET, 0);
        WREG32_SOC15_UMSCH(regUMSCH_MES_RESET_CTRL, data); @@ -229,6 +247,14 @@ static int umsch_mm_v4_0_ring_stop(struct amdgpu_umsch_mm *umsch)
        data = REG_SET_FIELD(data, VCN_UMSCH_RB_DB_CTRL, EN, 0);
        WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_DB_CTRL, data);

+       if (adev->ip_versions[VCN_HWIP][0] == IP_VERSION(4, 0, 5)) {
+               WREG32_SOC15(VCN, 0, regUVD_IPX_DLDO_CONFIG,
+                       2 << UVD_IPX_DLDO_CONFIG__ONO0_PWR_CONFIG__SHIFT);
+               SOC15_WAIT_ON_RREG(VCN, 0, regUVD_IPX_DLDO_STATUS,
+                       1 << UVD_IPX_DLDO_STATUS__ONO0_PWR_STATUS__SHIFT,
+                       UVD_IPX_DLDO_STATUS__ONO0_PWR_STATUS_MASK);
+       }
+
        return 0;
 }

--
2.25.1