This is required for a650 to work.
Signed-off-by: Jonathan Marek <jonat...@marek.ca>
---
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 16 ++++++++++++++++
drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 1 +
drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h | 4 ++++
3 files changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index b583bf6e293b..1cdb7c832b87 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -198,6 +198,12 @@ static int a6xx_gmu_start(struct a6xx_gmu *gmu)
u32 val;
gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1);
+
+ /* Set the log wptr index
+ * note: downstream saves the value in poweroff and restores it here
+ */
+ gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_RESP, 0);
+
gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 0);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, val,
@@ -739,6 +745,9 @@ static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned
int state)
gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid);
+ gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_MSG,
+ gmu->log->iova | (gmu->log->size / SZ_4K - 1));
+
/* Set up the lowest idle level on the GMU */
a6xx_gmu_power_config(gmu);
@@ -1416,6 +1425,7 @@ void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu)
a6xx_gmu_memory_free(gmu, gmu->dcache);
a6xx_gmu_memory_free(gmu, gmu->dummy);
a6xx_gmu_memory_free(gmu, gmu->debug);
+ a6xx_gmu_memory_free(gmu, gmu->log);
a6xx_gmu_memory_free(gmu, gmu->hfi);
iommu_detach_device(gmu->domain, gmu->dev);
@@ -1495,6 +1505,11 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct
device_node *node)
if (IS_ERR(gmu->hfi))
goto err_memory;
+ /* Allocate memory for the GMU log region */
+ gmu->log = a6xx_gmu_memory_alloc(gmu, SZ_4K, 0);
+ if (IS_ERR(gmu->log))
+ goto err_memory;
+
/* Map the GMU registers */
gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu");
if (IS_ERR(gmu->mmio))
@@ -1542,6 +1557,7 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct
device_node *node)
a6xx_gmu_memory_free(gmu, gmu->dcache);
a6xx_gmu_memory_free(gmu, gmu->dummy);
a6xx_gmu_memory_free(gmu, gmu->debug);
+ a6xx_gmu_memory_free(gmu, gmu->log);
a6xx_gmu_memory_free(gmu, gmu->hfi);
if (gmu->domain) {
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
index abd425ca6682..589b9b0c348e 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
@@ -59,6 +59,7 @@ struct a6xx_gmu {
struct a6xx_gmu_bo *hfi;
struct a6xx_gmu_bo *debug;
+ struct a6xx_gmu_bo *log;
struct a6xx_gmu_bo *icache;
struct a6xx_gmu_bo *dcache;
struct a6xx_gmu_bo *dummy;
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h
b/drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h
index b4357ea550ec..176ae94d9fe6 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h
@@ -205,6 +205,10 @@ static inline uint32_t A6XX_GMU_GPU_NAP_CTRL_SID(uint32_t
val)
#define REG_A6XX_GPU_GMU_CX_GMU_CX_FAL_INTF 0x000050f0
+#define REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_MSG 0x00005100
+
+#define REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_RESP
0x00005101
+
#define REG_A6XX_GMU_BOOT_KMD_LM_HANDSHAKE 0x000051f0
#define REG_A6XX_GMU_LLM_GLM_SLEEP_CTRL
0x00005157
--
2.26.1
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