On Mon, May 14, 2018 at 10:23 AM, <mikita.lipski at amd.com> wrote:
> From: Mikita Lipski <mikita.lipski at amd.com>
>
> Functionality to message smc to enable pwe after gpu suspense.
> It is used in case when display resumes from S3 and wants to start
> audio driver by enabling pwe.
>
> Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
Acked-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c | 8 ++++++++
> drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 1 +
> 2 files changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> index 8b75f52..2f69bfa 100644
> --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
> @@ -1113,6 +1113,13 @@ static int smu10_set_watermarks_for_clocks_ranges(struct pp_hwmgr *hwmgr,
> data->water_marks_exist = true;
> return result;
> }
> +
> +static int smu10_smus_notify_pwe(struct pp_hwmgr *hwmgr)
> +{
> +
> + return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_SetRccPfcPmeRestoreRegister);
> +}
> +
> static int smu10_set_mmhub_powergating_by_smu(struct pp_hwmgr *hwmgr)
> {
> return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_PowerGateMmHub);
> @@ -1153,6 +1160,7 @@ static const struct pp_hwmgr_func smu10_hwmgr_funcs = {
> .power_state_set = smu10_set_power_state_tasks,
> .dynamic_state_management_disable = smu10_disable_dpm_tasks,
> .set_mmhub_powergating_by_smu = smu10_set_mmhub_powergating_by_smu,
> + .smus_notify_pwe = smu10_smus_notify_pwe,
> .gfx_off_control = smu10_gfx_off_control,
> };
>
> diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
> index 3d9743f..3c321c7 100644
> --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
> +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
> @@ -326,6 +326,7 @@ struct pp_hwmgr_func {
> long *input, uint32_t size);
> int (*set_power_limit)(struct pp_hwmgr *hwmgr, uint32_t n);
> int (*set_mmhub_powergating_by_smu)(struct pp_hwmgr *hwmgr);
> + int (*smus_notify_pwe)(struct pp_hwmgr *hwmgr);
> };
>
> struct pp_table_func {
> --
> 2.7.4
>
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