On Wed, Sep 26, 2018 at 8:51 AM Rex Zhu <Rex.Zhu@xxxxxxx> wrote:
>
> SDMA IP can be power up/down via smu message
>
> Signed-off-by: Rex Zhu <Rex.Zhu@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/amd/powerplay/amd_powerplay.c | 18 ++++++++++++++++++
> drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c | 8 ++++++++
> drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 1 +
> 3 files changed, 27 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
> index 53d3337..aff7c14 100644
> --- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
> +++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
> @@ -1214,6 +1214,21 @@ static void pp_dpm_powergate_acp(void *handle, bool gate)
> hwmgr->hwmgr_func->powergate_acp(hwmgr, gate);
> }
>
> +static void pp_dpm_powergate_sdma(void *handle, bool gate)
> +{
> + struct pp_hwmgr *hwmgr = handle;
> +
> + if (!hwmgr)
> + return;
> +
> + if (hwmgr->hwmgr_func->powergate_sdma == NULL) {
> + pr_info("%s was not implemented.\n", __func__);
> + return;
> + }
> +
> + hwmgr->hwmgr_func->powergate_sdma(hwmgr, gate);
> +}
> +
> static int pp_set_powergating_by_smu(void *handle,
> uint32_t block_type, bool gate)
> {
> @@ -1236,6 +1251,9 @@ static int pp_set_powergating_by_smu(void *handle,
> case AMD_IP_BLOCK_TYPE_ACP:
> pp_dpm_powergate_acp(handle, gate);
> break;
> + case AMD_IP_BLOCK_TYPE_SDMA:
> + pp_dpm_powergate_sdma(handle, gate);
> + break;
> default:
> break;
> }
> diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> index 5d1dae2..b7a9d0c 100644
> --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> @@ -1153,6 +1153,14 @@ static int smu10_powergate_mmhub(struct pp_hwmgr *hwmgr)
> return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_PowerGateMmHub);
> }
>
> +static int smu10_powergate_sdma(struct pp_hwmgr *hwmgr, bool gate)
> +{
> + if (gate)
> + return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_PowerDownSdma);
> + else
> + return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_PowerUpSdma);
> +}
> +
> static void smu10_powergate_vcn(struct pp_hwmgr *hwmgr, bool bgate)
> {
> if (bgate) {
> diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
> index a6d9212..d1183b1 100644
> --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
> +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
> @@ -328,6 +328,7 @@ struct pp_hwmgr_func {
> int (*set_power_limit)(struct pp_hwmgr *hwmgr, uint32_t n);
> int (*powergate_mmhub)(struct pp_hwmgr *hwmgr);
> int (*smus_notify_pwe)(struct pp_hwmgr *hwmgr);
> + int (*powergate_sdma)(struct pp_hwmgr *hwmgr, bool bgate);
> };
>
> struct pp_table_func {
> --
> 1.9.1
>
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