On Tue, Apr 21, 2020 at 07:41:26PM -0400, Jonathan Marek wrote:
> This is required for a650 to work.
Reviewed-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
> Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
> ---
> drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 15 +++++++++++++++
> drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 1 +
> drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h | 4 ++++
> 3 files changed, 20 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> index 60ed5360fd8a..f24e436daafe 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
> @@ -201,6 +201,12 @@ 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,
> @@ -740,6 +746,9 @@ 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);
>
> @@ -1046,6 +1055,7 @@ static void a6xx_gmu_memory_free(struct a6xx_gmu *gmu)
> msm_gem_kernel_put(gmu->icache.obj, gmu->aspace, false);
> msm_gem_kernel_put(gmu->dcache.obj, gmu->aspace, false);
> msm_gem_kernel_put(gmu->dummy.obj, gmu->aspace, false);
> + msm_gem_kernel_put(gmu->log.obj, gmu->aspace, false);
>
> gmu->aspace->mmu->funcs->detach(gmu->aspace->mmu);
> msm_gem_address_space_put(gmu->aspace);
> @@ -1450,6 +1460,11 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
> if (ret)
> goto err_memory;
>
> + /* Allocate memory for the GMU log region */
> + ret = a6xx_gmu_memory_alloc(gmu, &gmu->log, SZ_4K, 0);
> + if (ret)
> + goto err_memory;
> +
> /* Map the GMU registers */
> gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu");
> if (IS_ERR(gmu->mmio)) {
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
> index aed02b2b7659..be65720f32cf 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
> @@ -61,6 +61,7 @@ struct a6xx_gmu {
> struct a6xx_gmu_bo icache;
> struct a6xx_gmu_bo dcache;
> struct a6xx_gmu_bo dummy;
> + struct a6xx_gmu_bo log;
>
> int nr_clocks;
> struct clk_bulk_data *clocks;
> 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
>
--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
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